Imported Upstream version 1.9.4
[deb_libnfs.git] / lib / libnfs.c
index 8d27a816b0fa079b6a28a090aa764a99767b08f1..94f03cb520455600f5d27c93301e8fecc1122dfb 100644 (file)
 /*
  * High level api to nfs filesystems
  */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef AROS
+#include "aros_compat.h"
+#endif
+
+#ifdef WIN32
+#include "win32_compat.h"
+#endif
+
+#ifdef HAVE_UTIME_H
+#include <utime.h>
+#endif
+
+#ifdef ANDROID
+#define statvfs statfs
+#endif
 
 #define _GNU_SOURCE
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_SYS_VFS_H
+#include <sys/vfs.h>
+#endif
+
+#ifdef HAVE_SYS_STATVFS_H
+#include <sys/statvfs.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+
 #include <stdio.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
-#include <strings.h>
+#include <assert.h>
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#include <sys/statvfs.h>
-#include <utime.h>
-#include <unistd.h>
 #include <fcntl.h>
+#include "libnfs-zdr.h"
+#include "slist.h"
 #include "libnfs.h"
 #include "libnfs-raw.h"
 #include "libnfs-raw-mount.h"
 #include "libnfs-raw-nfs.h"
+#include "libnfs-raw-portmap.h"
 #include "libnfs-private.h"
 
+#define MAX_DIR_CACHE 128
+
 struct nfsdir {
+       struct nfs_fh3 fh;
+       fattr3 attr;
+       struct nfsdir *next;
+
        struct nfsdirent *entries;
        struct nfsdirent *current;
 };
 
+struct nfs_readahead {
+       uint64_t fh_offset;
+       uint64_t last_offset;
+       uint64_t buf_offset;
+       uint64_t buf_count;
+       time_t buf_ts;
+       void *buf;
+       uint32_t cur_ra;
+};
+
 struct nfsfh {
        struct nfs_fh3 fh;
        int is_sync;
-       off_t offset;
+       int is_append;
+       uint64_t offset;
+       struct nfs_readahead ra;
 };
 
 struct nfs_context {
@@ -53,8 +111,10 @@ struct nfs_context {
        char *server;
        char *export;
        struct nfs_fh3 rootfh;
-       size_t readmax;
-       size_t writemax;
+       uint64_t readmax;
+       uint64_t writemax;
+       char *cwd;
+       struct nfsdir *dircache;
 };
 
 void nfs_free_nfsdir(struct nfsdir *nfsdir)
@@ -67,11 +127,42 @@ void nfs_free_nfsdir(struct nfsdir *nfsdir)
                free(nfsdir->entries);
                nfsdir->entries = dirent;
        }
+       free(nfsdir->fh.data.data_val);
        free(nfsdir);
 }
 
+static void nfs_dircache_add(struct nfs_context *nfs, struct nfsdir *nfsdir)
+{
+       int i;
+       LIBNFS_LIST_ADD(&nfs->dircache, nfsdir);
+
+       for (nfsdir = nfs->dircache, i = 0; nfsdir; nfsdir = nfsdir->next, i++) {
+               if (i > MAX_DIR_CACHE) {
+                       LIBNFS_LIST_REMOVE(&nfs->dircache, nfsdir);
+                       nfs_free_nfsdir(nfsdir);
+                       break;
+               }
+       }
+}
+
+static struct nfsdir *nfs_dircache_find(struct nfs_context *nfs, struct nfs_fh3 *fh)
+{
+       struct nfsdir *nfsdir;
+
+       for (nfsdir = nfs->dircache; nfsdir; nfsdir = nfsdir->next) {
+               if (nfsdir->fh.data.data_len == fh->data.data_len &&
+                   !memcmp(nfsdir->fh.data.data_val, fh->data.data_val, fh->data.data_len)) {
+                       LIBNFS_LIST_REMOVE(&nfs->dircache, nfsdir);
+                       return nfsdir;
+               }
+       }
+
+       return NULL;
+}
+
 struct nfs_cb_data;
-typedef int (*continue_func)(struct nfs_context *nfs, struct nfs_cb_data *data);
+typedef int (*continue_func)(struct nfs_context *nfs, fattr3 *attr,
+                            struct nfs_cb_data *data);
 
 struct nfs_cb_data {
        struct nfs_context *nfs;
@@ -91,23 +182,25 @@ struct nfs_cb_data {
        /* for multi-read/write calls. */
        int error;
        int cancel;
+       int oom;
        int num_calls;
-       off_t start_offset, max_offset;
+       uint64_t offset, count, max_offset, org_offset, org_count;
        char *buffer;
+       char *usrbuf;
 };
 
 struct nfs_mcb_data {
        struct nfs_cb_data *data;
-       off_t offset;
-       size_t count;
+       uint64_t offset;
+       uint64_t count;
+       int update_pos;
 };
 
-static int nfs_lookup_path_async_internal(struct nfs_context *nfs, struct nfs_cb_data *data, struct nfs_fh3 *fh);
-
+static int nfs_lookup_path_async_internal(struct nfs_context *nfs, fattr3 *attr, struct nfs_cb_data *data, struct nfs_fh3 *fh);
 
 void nfs_set_auth(struct nfs_context *nfs, struct AUTH *auth)
 {
-       return rpc_set_auth(nfs->rpc, auth);
+       rpc_set_auth(nfs->rpc, auth);
 }
 
 int nfs_get_fd(struct nfs_context *nfs)
@@ -115,6 +208,11 @@ int nfs_get_fd(struct nfs_context *nfs)
        return rpc_get_fd(nfs->rpc);
 }
 
+int nfs_queue_length(struct nfs_context *nfs)
+{
+       return rpc_queue_length(nfs->rpc);
+}
+
 int nfs_which_events(struct nfs_context *nfs)
 {
        return rpc_which_events(nfs->rpc);
@@ -130,6 +228,161 @@ char *nfs_get_error(struct nfs_context *nfs)
        return rpc_get_error(nfs->rpc);
 };
 
+static int nfs_set_context_args(struct nfs_context *nfs, char *arg, char *val)
+{
+       if (!strcmp(arg, "tcp-syncnt")) {
+               rpc_set_tcp_syncnt(nfs_get_rpc_context(nfs), atoi(val));
+       } else if (!strcmp(arg, "uid")) {
+               rpc_set_uid(nfs_get_rpc_context(nfs), atoi(val));
+       } else if (!strcmp(arg, "gid")) {
+               rpc_set_gid(nfs_get_rpc_context(nfs), atoi(val));
+       } else if (!strcmp(arg, "readahaed")) {
+               rpc_set_readahead(nfs_get_rpc_context(nfs), atoi(val));
+       }
+       return 0;
+}
+
+static struct nfs_url *nfs_parse_url(struct nfs_context *nfs, const char *url, int dir, int incomplete)
+{
+       struct nfs_url *urls;
+       char *strp, *flagsp, *strp2;
+
+       if (strncmp(url, "nfs://", 6)) {
+               rpc_set_error(nfs->rpc, "Invalid URL specified");
+               return NULL;
+       }
+
+       urls = malloc(sizeof(struct nfs_url));
+       if (urls == NULL) {
+               rpc_set_error(nfs->rpc, "Out of memory");
+               return NULL;
+       }
+
+       memset(urls, 0x00, sizeof(struct nfs_url));
+       urls->server = strdup(url + 6);
+       if (urls->server == NULL) {
+               nfs_destroy_url(urls);
+               rpc_set_error(nfs->rpc, "Out of memory");
+               return NULL;
+       }
+
+       if (urls->server[0] == '/' || urls->server[0] == '\0' ||
+               urls->server[0] == '?') {
+               if (incomplete) {
+                       flagsp = strchr(urls->server, '?');
+                       goto flags;
+               }
+               nfs_destroy_url(urls);
+               rpc_set_error(nfs->rpc, "Invalid server string");
+               return NULL;
+       }
+
+       strp = strchr(urls->server, '/');
+       if (strp == NULL) {
+               if (incomplete) {
+                       flagsp = strchr(urls->server, '?');
+                       goto flags;
+               }
+               nfs_destroy_url(urls);
+               rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
+               return NULL;
+       }
+
+       urls->path = strdup(strp);
+       if (urls->path == NULL) {
+               nfs_destroy_url(urls);
+               rpc_set_error(nfs->rpc, "Out of memory");
+               return NULL;
+       }
+       *strp = 0;
+
+       if (dir) {
+               flagsp = strchr(urls->path, '?');
+               goto flags;
+       }
+
+       strp = strrchr(urls->path, '/');
+       if (strp == NULL) {
+               if (incomplete) {
+                       flagsp = strchr(urls->path, '?');
+                       goto flags;
+               }
+               nfs_destroy_url(urls);
+               rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
+               return NULL;
+       }
+       urls->file = strdup(strp);
+       if (urls->path == NULL) {
+               nfs_destroy_url(urls);
+               rpc_set_error(nfs->rpc, "Out of memory");
+               return NULL;
+       }
+       *strp = 0;
+       flagsp = strchr(urls->file, '?');
+
+flags:
+       if (flagsp) {
+               *flagsp = 0;
+       }
+
+       if (urls->file && !strlen(urls->file)) {
+               free(urls->file);
+               urls->file = NULL;
+               if (!incomplete) {
+                       nfs_destroy_url(urls);
+                       rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
+                       return NULL;
+               }
+       }
+
+       while (flagsp != NULL && *(flagsp+1) != 0) {
+               strp = flagsp + 1;
+               flagsp = strchr(strp, '&');
+               if (flagsp) {
+                       *flagsp = 0;
+               }
+               strp2 = strchr(strp, '=');
+               if (strp2) {
+                       *strp2 = 0;
+                       strp2++;
+                       nfs_set_context_args(nfs, strp, strp2);
+               }
+       }
+
+       if (urls->server && strlen(urls->server) <= 1) {
+               free(urls->server);
+               urls->server = NULL;
+       }
+
+       return urls;
+}
+
+struct nfs_url *nfs_parse_url_full(struct nfs_context *nfs, const char *url)
+{
+       return nfs_parse_url(nfs, url, 0, 0);
+}
+
+struct nfs_url *nfs_parse_url_dir(struct nfs_context *nfs, const char *url)
+{
+       return nfs_parse_url(nfs, url, 1, 0);
+}
+
+struct nfs_url *nfs_parse_url_incomplete(struct nfs_context *nfs, const char *url)
+{
+       return nfs_parse_url(nfs, url, 0, 1);
+}
+
+
+void nfs_destroy_url(struct nfs_url *url)
+{
+       if (url) {
+               free(url->server);
+               free(url->path);
+               free(url->file);
+       }
+       free(url);
+}
+
 struct nfs_context *nfs_init_context(void)
 {
        struct nfs_context *nfs;
@@ -138,12 +391,16 @@ struct nfs_context *nfs_init_context(void)
        if (nfs == NULL) {
                return NULL;
        }
+       memset(nfs, 0, sizeof(struct nfs_context));
+
        nfs->rpc = rpc_init_context();
        if (nfs->rpc == NULL) {
                free(nfs);
                return NULL;
        }
 
+       nfs->cwd = strdup("/");
+
        return nfs;
 }
 
@@ -162,68 +419,290 @@ void nfs_destroy_context(struct nfs_context *nfs)
                nfs->export = NULL;
        }
 
+       if (nfs->cwd) {
+               free(nfs->cwd);
+               nfs->cwd = NULL;
+       }
+
        if (nfs->rootfh.data.data_val != NULL) {
                free(nfs->rootfh.data.data_val);
                nfs->rootfh.data.data_val = NULL;
        }
 
+       while (nfs->dircache) {
+               struct nfsdir *nfsdir = nfs->dircache;
+               LIBNFS_LIST_REMOVE(&nfs->dircache, nfsdir);
+               nfs_free_nfsdir(nfsdir);
+       }
+
        free(nfs);
 }
 
-void free_nfs_cb_data(struct nfs_cb_data *data)
+struct rpc_cb_data {
+       char *server;
+       uint32_t program;
+       uint32_t version;
+
+       rpc_cb cb;
+       void *private_data;
+};
+
+void free_rpc_cb_data(struct rpc_cb_data *data)
+{
+       free(data->server);
+       data->server = NULL;
+       free(data);
+}
+
+static void rpc_connect_program_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       struct rpc_cb_data *data = private_data;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       /* Dont want any more callbacks even if the socket is closed */
+       rpc->connect_cb = NULL;
+
+       if (status == RPC_STATUS_ERROR) {
+               data->cb(rpc, status, command_data, data->private_data);
+               free_rpc_cb_data(data);
+               return;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               data->cb(rpc, status, "Command was cancelled", data->private_data);
+               free_rpc_cb_data(data);
+               return;
+       }
+
+       data->cb(rpc, status, NULL, data->private_data);
+       free_rpc_cb_data(data);
+}
+
+static void rpc_connect_program_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
-       if (data->saved_path != NULL) {
-               free(data->saved_path);
-               data->saved_path = NULL;
+       struct rpc_cb_data *data = private_data;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       /* Dont want any more callbacks even if the socket is closed */
+       rpc->connect_cb = NULL;
+
+       if (status == RPC_STATUS_ERROR) {
+               data->cb(rpc, status, command_data, data->private_data);
+               free_rpc_cb_data(data);
+               return;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               data->cb(rpc, status, "Command was cancelled", data->private_data);
+               free_rpc_cb_data(data);
+               return;
        }
 
-       if (data->continue_data != NULL) {
-               data->free_continue_data(data->continue_data);
-               data->continue_data = NULL;
+       switch (data->program) {
+       case MOUNT_PROGRAM:
+               if (rpc_mount3_null_async(rpc, rpc_connect_program_5_cb,
+                                       data) != 0) {
+                       data->cb(rpc, status, command_data, data->private_data);
+                       free_rpc_cb_data(data);
+                       return;
+               }
+               return;
+       case NFS_PROGRAM:
+               if (rpc_nfs3_null_async(rpc, rpc_connect_program_5_cb,
+                                       data) != 0) {
+                       data->cb(rpc, status, command_data, data->private_data);
+                       free_rpc_cb_data(data);
+                       return;
+               }
+               return;
        }
 
-       if (data->fh.data.data_val != NULL) {
-               free(data->fh.data.data_val);
-               data->fh.data.data_val = NULL;
+       data->cb(rpc, status, NULL, data->private_data);
+       free_rpc_cb_data(data);
+}
+
+static void rpc_connect_program_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       struct rpc_cb_data *data = private_data;
+       struct pmap3_string_result *gar;
+       uint32_t rpc_port = 0;
+       unsigned char *ptr;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       if (status == RPC_STATUS_ERROR) {
+               data->cb(rpc, status, command_data, data->private_data);
+               free_rpc_cb_data(data);
+               return;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               data->cb(rpc, status, "Command was cancelled", data->private_data);
+               free_rpc_cb_data(data);
+               return;
        }
 
-       if (data->buffer != NULL) {
-               free(data->buffer);
-               data->buffer = NULL;
+       switch (rpc->s.ss_family) {
+       case AF_INET:
+               rpc_port = *(uint32_t *)command_data;
+               break;
+       case AF_INET6:
+               /* ouch. portmapper and ipv6 are not great */
+               gar = command_data;
+               if (gar->addr == NULL) {
+                       break;
+               }
+               ptr = strrchr(gar->addr, '.');
+               if (ptr == NULL) {
+                       break;
+               }
+               rpc_port = atoi(ptr + 1);
+               *ptr = 0;
+               ptr = strrchr(gar->addr, '.');
+               if (ptr == NULL) {
+                       break;
+               }
+               rpc_port += 256 * atoi(ptr + 1);
+               break;
+       }
+       if (rpc_port == 0) {
+               rpc_set_error(rpc, "RPC error. Program is not available on %s", data->server);
+               data->cb(rpc, RPC_STATUS_ERROR, rpc_get_error(rpc), data->private_data);
+               free_rpc_cb_data(data);
+               return;
        }
 
-       free(data);
+       rpc_disconnect(rpc, "normal disconnect");
+       if (rpc_connect_async(rpc, data->server, rpc_port, rpc_connect_program_4_cb, data) != 0) {
+               data->cb(rpc, status, command_data, data->private_data);
+               free_rpc_cb_data(data);
+               return;
+       }
 }
 
+static void rpc_connect_program_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       struct rpc_cb_data *data = private_data;
+       struct pmap3_mapping map;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
+       if (status == RPC_STATUS_ERROR) {
+               data->cb(rpc, status, command_data, data->private_data);
+               free_rpc_cb_data(data);
+               return;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               data->cb(rpc, status, "Command was cancelled", data->private_data);
+               free_rpc_cb_data(data);
+               return;
+       }
 
+       switch (rpc->s.ss_family) {
+       case AF_INET:
+               if (rpc_pmap2_getport_async(rpc, data->program, data->version, IPPROTO_TCP, rpc_connect_program_3_cb, private_data) != 0) {
+                       data->cb(rpc, status, command_data, data->private_data);
+                       free_rpc_cb_data(data);
+                       return;
+               }
+               break;
+       case AF_INET6:
+               map.prog=data->program;
+               map.vers=data->version;
+               map.netid="";
+               map.addr="";
+               map.owner="";
+               if (rpc_pmap3_getaddr_async(rpc, &map, rpc_connect_program_3_cb, private_data) != 0) {
+                       data->cb(rpc, status, command_data, data->private_data);
+                       free_rpc_cb_data(data);
+                       return;
+               }
+               break;
+       }
+}
 
-static void nfs_mount_10_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void rpc_connect_program_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
-       struct nfs_cb_data *data = private_data;
-       struct nfs_context *nfs = data->nfs;
+       struct rpc_cb_data *data = private_data;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       /* Dont want any more callbacks even if the socket is closed */
+       rpc->connect_cb = NULL;
 
        if (status == RPC_STATUS_ERROR) {
-               data->cb(-EFAULT, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
+               data->cb(rpc, status, command_data, data->private_data);
+               free_rpc_cb_data(data);
                return;
        }
        if (status == RPC_STATUS_CANCEL) {
-               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
-               free_nfs_cb_data(data);
+               data->cb(rpc, status, "Command was cancelled", data->private_data);
+               free_rpc_cb_data(data);
                return;
        }
 
-       data->cb(0, nfs, NULL, data->private_data);
-       free_nfs_cb_data(data);
+       switch (rpc->s.ss_family) {
+       case AF_INET:
+               if (rpc_pmap2_null_async(rpc, rpc_connect_program_2_cb, data) != 0) {
+                       data->cb(rpc, status, command_data, data->private_data);
+                       free_rpc_cb_data(data);
+                       return;
+               }
+               break;
+       case AF_INET6:
+               if (rpc_pmap3_null_async(rpc, rpc_connect_program_2_cb, data) != 0) {
+                       data->cb(rpc, status, command_data, data->private_data);
+                       free_rpc_cb_data(data);
+                       return;
+               }
+               break;
+       }
 }
 
-static void nfs_mount_9_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+int rpc_connect_program_async(struct rpc_context *rpc, const char *server, int program, int version, rpc_cb cb, void *private_data)
+{
+       struct rpc_cb_data *data;
+
+       data = malloc(sizeof(struct rpc_cb_data));
+       if (data == NULL) {
+               return -1;
+       }
+       memset(data, 0, sizeof(struct rpc_cb_data));
+       data->server       = strdup(server);
+       data->program      = program;
+       data->version      = version;
+
+       data->cb           = cb;
+       data->private_data = private_data;
+
+       if (rpc_connect_async(rpc, server, 111, rpc_connect_program_1_cb, data) != 0) {
+               rpc_set_error(rpc, "Failed to start connection");
+               free_rpc_cb_data(data);
+               return -1;
+       }
+       return 0;
+}
+
+static void free_nfs_cb_data(struct nfs_cb_data *data)
+{
+       if (data->continue_data != NULL) {
+               assert(data->free_continue_data);
+               data->free_continue_data(data->continue_data);
+       }
+
+       free(data->saved_path);
+       free(data->fh.data.data_val);
+       free(data->buffer);
+
+       free(data);
+}
+
+
+static void nfs_mount_10_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
-       FSINFO3res *res = command_data;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
@@ -236,20 +715,18 @@ static void nfs_mount_9_cb(struct rpc_context *rpc, int status, void *command_da
                return;
        }
 
-       nfs->readmax = res->FSINFO3res_u.resok.rtmax;
-       nfs->writemax = res->FSINFO3res_u.resok.wtmax;
-
-       if (rpc_nfs_getattr_async(rpc, nfs_mount_10_cb, &nfs->rootfh, data) != 0) {
-               data->cb(-ENOMEM, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
+       data->cb(0, nfs, NULL, data->private_data);
+       free_nfs_cb_data(data);
 }
 
-static void nfs_mount_8_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+static void nfs_mount_9_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
+       FSINFO3res *res = command_data;
+       struct GETATTR3args args;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
@@ -262,18 +739,26 @@ static void nfs_mount_8_cb(struct rpc_context *rpc, int status, void *command_da
                return;
        }
 
-       if (rpc_nfs_fsinfo_async(rpc, nfs_mount_9_cb, &nfs->rootfh, data) != 0) {
+       nfs->readmax = res->FSINFO3res_u.resok.rtmax;
+       nfs->writemax = res->FSINFO3res_u.resok.wtmax;
+
+       memset(&args, 0, sizeof(GETATTR3args));
+       args.object = nfs->rootfh;
+
+       if (rpc_nfs3_getattr_async(rpc, nfs_mount_10_cb, &args, data) != 0) {
                data->cb(-ENOMEM, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
                return;
        }
 }
 
-
-static void nfs_mount_7_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+static void nfs_mount_8_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
+       struct FSINFO3args args;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
@@ -286,20 +771,22 @@ static void nfs_mount_7_cb(struct rpc_context *rpc, int status, void *command_da
                return;
        }
 
-       if (rpc_nfs_null_async(rpc, nfs_mount_8_cb, data) != 0) {
+       args.fsroot = nfs->rootfh;
+       if (rpc_nfs3_fsinfo_async(rpc, nfs_mount_9_cb, &args, data) != 0) {
                data->cb(-ENOMEM, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
                return;
        }
 }
 
-
 static void nfs_mount_6_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        mountres3 *res;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -330,11 +817,15 @@ static void nfs_mount_6_cb(struct rpc_context *rpc, int status, void *command_da
        memcpy(nfs->rootfh.data.data_val, res->mountres3_u.mountinfo.fhandle.fhandle3_val, nfs->rootfh.data.data_len);
 
        rpc_disconnect(rpc, "normal disconnect");
-       if (rpc_connect_async(rpc, nfs->server, 2049, nfs_mount_7_cb, data) != 0) {
+
+       if (rpc_connect_program_async(nfs->rpc, nfs->server, NFS_PROGRAM, NFS_V3, nfs_mount_8_cb, data) != 0) {
                data->cb(-ENOMEM, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
                return;
        }
+
+       /* NFS TCP connections we want to autoreconnect after sessions are torn down (due to inactivity or error) */
+       rpc_set_autoreconnect(rpc);
 }
 
 
@@ -343,6 +834,8 @@ static void nfs_mount_5_cb(struct rpc_context *rpc, int status, void *command_da
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -354,136 +847,42 @@ static void nfs_mount_5_cb(struct rpc_context *rpc, int status, void *command_da
                return;
        }
 
-       if (rpc_mount_mnt_async(rpc, nfs_mount_6_cb, nfs->export, data) != 0) {
+       if (rpc_mount3_mnt_async(rpc, nfs_mount_6_cb, nfs->export, data) != 0) {
                data->cb(-ENOMEM, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
                return;
        }
 }
 
-static void nfs_mount_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
-{
-       struct nfs_cb_data *data = private_data;
-       struct nfs_context *nfs = data->nfs;
-
-       if (status == RPC_STATUS_ERROR) {
-               data->cb(-EFAULT, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-       if (status == RPC_STATUS_CANCEL) {
-               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-
-       if (rpc_mount_null_async(rpc, nfs_mount_5_cb, data) != 0) {
-               data->cb(-ENOMEM, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-}
-
-static void nfs_mount_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
-{
-       struct nfs_cb_data *data = private_data;
-       struct nfs_context *nfs = data->nfs;
-       uint32_t mount_port;
-
-       if (status == RPC_STATUS_ERROR) {       
-               data->cb(-EFAULT, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-       if (status == RPC_STATUS_CANCEL) {
-               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-
-       mount_port = *(uint32_t *)command_data;
-       if (mount_port == 0) {
-               rpc_set_error(rpc, "RPC error. Mount program is not available on %s", nfs->server);
-               data->cb(-ENOENT, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-
-       rpc_disconnect(rpc, "normal disconnect");
-       if (rpc_connect_async(rpc, nfs->server, mount_port, nfs_mount_4_cb, data) != 0) {
-               data->cb(-ENOMEM, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-}
-
-
-static void nfs_mount_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
-{
-       struct nfs_cb_data *data = private_data;
-       struct nfs_context *nfs = data->nfs;
-
-       if (status == RPC_STATUS_ERROR) {
-               data->cb(-EFAULT, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-       if (status == RPC_STATUS_CANCEL) {
-               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-
-       if (rpc_pmap_getport_async(rpc, MOUNT_PROGRAM, MOUNT_V3, nfs_mount_3_cb, private_data) != 0) {
-               data->cb(-ENOMEM, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-}
-
-static void nfs_mount_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
-{
-       struct nfs_cb_data *data = private_data;
-       struct nfs_context *nfs = data->nfs;
-
-       if (status == RPC_STATUS_ERROR) {
-               data->cb(-EFAULT, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-       if (status == RPC_STATUS_CANCEL) {
-               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-
-       if (rpc_pmap_null_async(rpc, nfs_mount_2_cb, data) != 0) {
-               data->cb(-ENOMEM, nfs, command_data, data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
-}
-
-/*
- * Async call for mounting an nfs share and geting the root filehandle
- */
-int nfs_mount_async(struct nfs_context *nfs, const char *server, const char *export, nfs_cb cb, void *private_data)
+/*
+ * Async call for mounting an nfs share and geting the root filehandle
+ */
+int nfs_mount_async(struct nfs_context *nfs, const char *server, const char *export, nfs_cb cb, void *private_data)
 {
        struct nfs_cb_data *data;
+       char *new_server, *new_export;
 
        data = malloc(sizeof(struct nfs_cb_data));
        if (data == NULL) {
                rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
                return -1;
        }
-       bzero(data, sizeof(struct nfs_cb_data));
-       nfs->server        = strdup(server);
-       nfs->export        = strdup(export);
+       memset(data, 0, sizeof(struct nfs_cb_data));
+       new_server = strdup(server);
+       new_export = strdup(export);
+       if (nfs->server != NULL) {
+               free(nfs->server);
+       }
+       nfs->server        = new_server;
+       if (nfs->export != NULL) {
+               free(nfs->export);
+       }
+       nfs->export        = new_export;
        data->nfs          = nfs;
        data->cb           = cb;
        data->private_data = private_data;
 
-       if (rpc_connect_async(nfs->rpc, server, 111, nfs_mount_1_cb, data) != 0) {
+       if (rpc_connect_program_async(nfs->rpc, server, MOUNT_PROGRAM, MOUNT_V3, nfs_mount_5_cb, data) != 0) {
                rpc_set_error(nfs->rpc, "Failed to start connection");
                free_nfs_cb_data(data);
                return -1;
@@ -498,11 +897,14 @@ int nfs_mount_async(struct nfs_context *nfs, const char *server, const char *exp
  * Functions to first look up a path, component by component, and then finally call a specific function once
  * the filehandle for the final component is found.
  */
-static void nfs_lookup_path_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_lookup_path_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        LOOKUP3res *res;
+       fattr3 *attr;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
@@ -523,27 +925,36 @@ static void nfs_lookup_path_1_cb(struct rpc_context *rpc _U_, int status, void *
                return;
        }
 
-       if (nfs_lookup_path_async_internal(nfs, data, &res->LOOKUP3res_u.resok.object) != 0) {
-               rpc_set_error(nfs->rpc, "Failed to create lookup pdu");
-               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
-               free_nfs_cb_data(data);
-               return;
-       }
+       attr = res->LOOKUP3res_u.resok.obj_attributes.attributes_follow ?
+         &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes :
+         NULL;
+
+       /* This function will always invoke the callback and cleanup
+        * for failures. So no need to check the return value.
+        */
+       nfs_lookup_path_async_internal(nfs, attr, data, &res->LOOKUP3res_u.resok.object);
 }
 
-static int nfs_lookup_path_async_internal(struct nfs_context *nfs, struct nfs_cb_data *data, struct nfs_fh3 *fh)
+static int nfs_lookup_path_async_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data, struct nfs_fh3 *fh)
 {
-       char *path, *str;
+       char *path, *slash;
+       LOOKUP3args args;
 
        while (*data->path == '/') {
              data->path++;
        }
 
        path = data->path;
-       str = index(path, '/');
-       if (str != NULL) {
-               *str = 0;
-               data->path = str+1;
+       slash = strchr(path, '/');
+       if (slash != NULL) {
+               /* Clear slash so that path is a zero terminated string for
+                * the current path component. Set it back to '/' again later
+                * when we are finished referencing this component so that
+                * data->saved_path will still point to the full
+                * normalized path.
+                */
+               *slash = 0;
+               data->path = slash+1;
        } else {
                while (*data->path != 0) {
                      data->path++;
@@ -560,34 +971,182 @@ static int nfs_lookup_path_async_internal(struct nfs_context *nfs, struct nfs_cb
                        return -1;
                }
                memcpy(data->fh.data.data_val, fh->data.data_val, data->fh.data.data_len);
-               data->continue_cb(nfs, data);
+               if (slash != NULL) {
+                       *slash = '/';
+               }
+               data->continue_cb(nfs, attr, data);
                return 0;
        }
 
-       if (rpc_nfs_lookup_async(nfs->rpc, nfs_lookup_path_1_cb, fh, path, data) != 0) {
+       memset(&args, 0, sizeof(LOOKUP3args));
+       args.what.dir = *fh;
+       args.what.name = path;
+
+       if (rpc_nfs3_lookup_async(nfs->rpc, nfs_lookup_path_1_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
                return -1;
        }
+       if (slash != NULL) {
+               *slash = '/';
+       }
        return 0;
 }
 
-static int nfs_lookuppath_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data, continue_func continue_cb, void *continue_data, void (*free_continue_data)(void *), int continue_int)
+static int nfs_normalize_path(struct nfs_context *nfs, char *path)
 {
-       struct nfs_cb_data *data;
+       char *str;
+       int len;
+
+       /* // -> / */
+       while ((str = strstr(path, "//"))) {
+               while(*str) {
+                       *str = *(str + 1);
+                       str++;
+               }
+       }
+
+       /* /./ -> / */
+       while ((str = strstr(path, "/./"))) {
+               while(*(str + 1)) {
+                       *str = *(str + 2);
+                       str++;
+               }
+       }
 
+       /* ^/../ -> error */
+       if (!strncmp(path, "/../", 4)) {
+               rpc_set_error(nfs->rpc,
+                       "Absolute path starts with '/../' "
+                       "during normalization");
+               return -1;
+       }
+
+       /* ^[^/] -> error */
        if (path[0] != '/') {
-               rpc_set_error(nfs->rpc, "Pathname is not absulute %s", path);
+               rpc_set_error(nfs->rpc,
+                       "Absolute path does not start with '/'");
                return -1;
        }
 
+       /* /string/../ -> / */
+       while ((str = strstr(path, "/../"))) {
+               char *tmp;
+
+               if (!strncmp(path, "/../", 4)) {
+                       rpc_set_error(nfs->rpc,
+                               "Absolute path starts with '/../' "
+                               "during normalization");
+                       return -1;
+               }
+
+               tmp = str - 1;
+               while (*tmp != '/') {
+                       tmp--;
+               }
+               str += 3;
+               while((*(tmp++) = *(str++)) != '\0')
+                       ;
+       }
+
+       /* /$ -> \0 */
+       len = strlen(path);
+       if (len > 1) {
+               if (path[len - 1] == '/') {
+                       path[len - 1] = '\0';
+                       len--;
+               }
+       }
+       if (path[0] == '\0') {
+               rpc_set_error(nfs->rpc,
+                       "Absolute path became '' "
+                       "during normalization");
+               return -1;
+       }
+
+       /* /.$ -> \0 */
+       if (len >= 2) {
+               if (!strcmp(&path[len - 2], "/.")) {
+                       path[len - 2] = '\0';
+                       len -= 2;
+               }
+       }
+
+       /* ^/..$ -> error */
+       if (!strcmp(path, "/..")) {
+               rpc_set_error(nfs->rpc,
+                       "Absolute path is '/..' "
+                       "during normalization");
+               return -1;
+       }
+
+       /* /string/..$ -> / */
+       if (len >= 3) {
+               if (!strcmp(&path[len - 3], "/..")) {
+                       char *tmp = &path[len - 3];
+                       while (*--tmp != '/')
+                               ;
+                       *tmp = '\0';
+               }
+       }
+
+       return 0;
+}
+
+static void nfs_lookup_path_getattr_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       struct nfs_cb_data *data = private_data;
+       struct nfs_context *nfs = data->nfs;
+       GETATTR3res *res;
+       fattr3 *attr;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       if (status == RPC_STATUS_ERROR) {
+               data->cb(-EFAULT, nfs, command_data, data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+       res = command_data;
+       if (res->status != NFS3_OK) {
+               rpc_set_error(nfs->rpc, "NFS: GETATTR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+               data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+       attr = &res->GETATTR3res_u.resok.obj_attributes;
+       /* This function will always invoke the callback and cleanup
+        * for failures. So no need to check the return value.
+        */
+       nfs_lookup_path_async_internal(nfs, attr, data, &nfs->rootfh);
+}
+
+static int nfs_lookuppath_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data, continue_func continue_cb, void *continue_data, void (*free_continue_data)(void *), int continue_int)
+{
+       struct nfs_cb_data *data;
+       struct GETATTR3args args;
+
+       if (path[0] == '\0') {
+               path = ".";
+       }
+
        data = malloc(sizeof(struct nfs_cb_data));
        if (data == NULL) {
-               rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
+               rpc_set_error(nfs->rpc, "out of memory: failed to allocate "
+                       "nfs_cb_data structure");
+               if (free_continue_data)
+                       free_continue_data(continue_data);
                return -1;
        }
-       bzero(data, sizeof(struct nfs_cb_data));
+       memset(data, 0, sizeof(struct nfs_cb_data));
        data->nfs                = nfs;
        data->cb                 = cb;
        data->continue_cb        = continue_cb;
@@ -595,34 +1154,66 @@ static int nfs_lookuppath_async(struct nfs_context *nfs, const char *path, nfs_c
        data->free_continue_data = free_continue_data;
        data->continue_int       = continue_int;
        data->private_data       = private_data;
-       data->saved_path         = strdup(path);
+       if (path[0] == '/') {
+               data->saved_path = strdup(path);
+       } else {
+               data->saved_path = malloc(strlen(path) + strlen(nfs->cwd) + 2);
+               if (data->saved_path == NULL) {
+                       rpc_set_error(nfs->rpc, "out of memory: failed to "
+                               "malloc path string");
+                       free_nfs_cb_data(data);
+                       return -1;
+               }
+               sprintf(data->saved_path, "%s/%s", nfs->cwd, path);
+       }
+
        if (data->saved_path == NULL) {
                rpc_set_error(nfs->rpc, "out of memory: failed to copy path string");
                free_nfs_cb_data(data);
                return -1;
        }
-       data->path = data->saved_path;
+       if (nfs_normalize_path(nfs, data->saved_path) != 0) {
+               free_nfs_cb_data(data);
+               return -1;
+       }
 
-       if (nfs_lookup_path_async_internal(nfs, data, &nfs->rootfh) != 0) {
-               /* return 0 here since the callback will be invoked if there is a failure */
+       data->path = data->saved_path;
+       if (data->path[0]) {
+               /* This function will always invoke the callback and cleanup
+                * for failures. So no need to check the return value.
+                */
+               nfs_lookup_path_async_internal(nfs, NULL, data, &nfs->rootfh);
                return 0;
        }
+
+       /* We have a request for "", so just perform a GETATTR3 so we can
+        * return the attributes to the caller.
+        */
+       memset(&args, 0, sizeof(GETATTR3args));
+       args.object = nfs->rootfh;
+       if (rpc_nfs3_getattr_async(nfs->rpc, nfs_lookup_path_getattr_cb, &args, data) != 0) {
+               free_nfs_cb_data(data);
+               return -1;
+       }
        return 0;
 }
 
 
-
-
-
 /*
  * Async stat()
  */
-static void nfs_stat_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_stat_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        GETATTR3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
+#ifdef WIN32
+  struct __stat64 st;
+#else
        struct stat st;
+#endif
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
@@ -649,13 +1240,18 @@ static void nfs_stat_1_cb(struct rpc_context *rpc _U_, int status, void *command
        if (res->GETATTR3res_u.resok.obj_attributes.type == NF3DIR) {
                st.st_mode |= S_IFDIR ;
        }
+       if (res->GETATTR3res_u.resok.obj_attributes.type == NF3REG) {
+               st.st_mode |= S_IFREG ;
+       }
         st.st_nlink   = res->GETATTR3res_u.resok.obj_attributes.nlink;
         st.st_uid     = res->GETATTR3res_u.resok.obj_attributes.uid;
         st.st_gid     = res->GETATTR3res_u.resok.obj_attributes.gid;
         st.st_rdev    = 0;
         st.st_size    = res->GETATTR3res_u.resok.obj_attributes.size;
-        st.st_blksize = 4096;
-        st.st_blocks  = res->GETATTR3res_u.resok.obj_attributes.size / 4096;
+#ifndef WIN32
+        st.st_blksize = NFS_BLKSIZE;
+        st.st_blocks  = res->GETATTR3res_u.resok.obj_attributes.size / NFS_BLKSIZE;
+#endif//WIN32
         st.st_atime   = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
         st.st_mtime   = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
         st.st_ctime   = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
@@ -664,9 +1260,14 @@ static void nfs_stat_1_cb(struct rpc_context *rpc _U_, int status, void *command
        free_nfs_cb_data(data);
 }
 
-static int nfs_stat_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_stat_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
-       if (rpc_nfs_getattr_async(nfs->rpc, nfs_stat_1_cb, &data->fh, data) != 0) {
+       struct GETATTR3args args;
+
+       memset(&args, 0, sizeof(GETATTR3args));
+       args.object = data->fh;
+
+       if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat_1_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -686,13 +1287,141 @@ int nfs_stat_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *p
 }
 
 
+/*
+ * Async nfs_stat64()
+ */
+static void nfs_stat64_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       GETATTR3res *res;
+       struct nfs_cb_data *data = private_data;
+       struct nfs_context *nfs = data->nfs;
+       struct nfs_stat_64 st;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
+       if (status == RPC_STATUS_ERROR) {
+               data->cb(-EFAULT, nfs, command_data, data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+       res = command_data;
+       if (res->status != NFS3_OK) {
+               rpc_set_error(nfs->rpc, "NFS: GETATTR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+               data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+        st.nfs_dev     = -1;
+        st.nfs_ino     = res->GETATTR3res_u.resok.obj_attributes.fileid;
+        st.nfs_mode    = res->GETATTR3res_u.resok.obj_attributes.mode;
+       if (res->GETATTR3res_u.resok.obj_attributes.type == NF3DIR) {
+               st.nfs_mode |= S_IFDIR ;
+       }
+       if (res->GETATTR3res_u.resok.obj_attributes.type == NF3REG) {
+               st.nfs_mode |= S_IFREG ;
+       }
+        st.nfs_nlink   = res->GETATTR3res_u.resok.obj_attributes.nlink;
+        st.nfs_uid     = res->GETATTR3res_u.resok.obj_attributes.uid;
+        st.nfs_gid     = res->GETATTR3res_u.resok.obj_attributes.gid;
+        st.nfs_rdev    = 0;
+        st.nfs_size    = res->GETATTR3res_u.resok.obj_attributes.size;
+        st.nfs_atime   = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
+        st.nfs_mtime   = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
+        st.nfs_ctime   = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
+
+       data->cb(0, nfs, &st, data->private_data);
+       free_nfs_cb_data(data);
+}
+
+static int nfs_stat64_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
+{
+       struct GETATTR3args args;
+
+       memset(&args, 0, sizeof(GETATTR3args));
+       args.object = data->fh;
+
+       if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat64_1_cb, &args, data) != 0) {
+               rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
+               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return -1;
+       }
+       return 0;
+}
+
+int nfs_stat64_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
+{
+       if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_stat64_continue_internal, NULL, NULL, 0) != 0) {
+               rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
+               return -1;
+       }
+
+       return 0;
+}
 
 /*
  * Async open()
  */
-static void nfs_open_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_open_trunc_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       struct nfs_cb_data *data = private_data;
+       struct nfs_context *nfs = data->nfs;
+       struct nfsfh *nfsfh;
+       SETATTR3res *res;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       if (status == RPC_STATUS_ERROR) {
+               data->cb(-EFAULT, nfs, command_data, data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+       res = command_data;
+       if (res->status != NFS3_OK) {
+               rpc_set_error(nfs->rpc, "NFS: Setattr failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+               data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+       nfsfh = malloc(sizeof(struct nfsfh));
+       if (nfsfh == NULL) {
+               rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
+               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+       memset(nfsfh, 0, sizeof(struct nfsfh));
+
+       if (data->continue_int & O_SYNC) {
+               nfsfh->is_sync = 1;
+       }
+       if (data->continue_int & O_APPEND) {
+               nfsfh->is_append = 1;
+       }
+
+       /* steal the filehandle */
+       nfsfh->fh = data->fh;
+       data->fh.data.data_val = NULL;
+
+       data->cb(0, nfs, nfsfh, data->private_data);
+       free_nfs_cb_data(data);
+}
+
+static void nfs_open_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        ACCESS3res *res;
        struct nfs_cb_data *data = private_data;
@@ -700,6 +1429,8 @@ static void nfs_open_cb(struct rpc_context *rpc _U_, int status, void *command_d
        struct nfsfh *nfsfh;
        unsigned int nfsmode = 0;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -743,6 +1474,28 @@ static void nfs_open_cb(struct rpc_context *rpc _U_, int status, void *command_d
                return;
        }
 
+       /* Try to truncate it if we were requested to */
+       if ((data->continue_int & O_TRUNC) &&
+           (data->continue_int & (O_RDWR|O_WRONLY))) {
+               SETATTR3args args;
+
+               memset(&args, 0, sizeof(SETATTR3args));
+               args.object = data->fh;
+               args.new_attributes.size.set_it = 1;
+               args.new_attributes.size.set_size3_u.size = 0;
+
+               if (rpc_nfs3_setattr_async(nfs->rpc, nfs_open_trunc_cb, &args,
+                               data) != 0) {
+                       rpc_set_error(nfs->rpc, "RPC error: Failed to send "
+                               "SETATTR call for %s", data->path);
+                       data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
+                               data->private_data);
+                       free_nfs_cb_data(data);
+                       return;
+               }
+               return;
+       }
+
        nfsfh = malloc(sizeof(struct nfsfh));
        if (nfsfh == NULL) {
                rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
@@ -750,24 +1503,27 @@ static void nfs_open_cb(struct rpc_context *rpc _U_, int status, void *command_d
                free_nfs_cb_data(data);
                return;
        }
-       bzero(nfsfh, sizeof(struct nfsfh));
+       memset(nfsfh, 0, sizeof(struct nfsfh));
 
        if (data->continue_int & O_SYNC) {
                nfsfh->is_sync = 1;
        }
+       if (data->continue_int & O_APPEND) {
+               nfsfh->is_append = 1;
+       }
 
        /* steal the filehandle */
-       nfsfh->fh.data.data_len = data->fh.data.data_len;
-       nfsfh->fh.data.data_val = data->fh.data.data_val;
+       nfsfh->fh = data->fh;
        data->fh.data.data_val = NULL;
 
        data->cb(0, nfs, nfsfh, data->private_data);
        free_nfs_cb_data(data);
 }
 
-static int nfs_open_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_open_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        int nfsmode = 0;
+       ACCESS3args args;
 
        if (data->continue_int & O_WRONLY) {
                nfsmode |= ACCESS3_MODIFY;
@@ -779,18 +1535,24 @@ static int nfs_open_continue_internal(struct nfs_context *nfs, struct nfs_cb_dat
                nfsmode |= ACCESS3_READ;
        }
 
-       if (rpc_nfs_access_async(nfs->rpc, nfs_open_cb, &data->fh, nfsmode, data) != 0) {
-               rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS call for %s", data->path);
-               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+       memset(&args, 0, sizeof(ACCESS3args));
+       args.object = data->fh;
+       args.access = nfsmode;
+
+       if (rpc_nfs3_access_async(nfs->rpc, nfs_open_cb, &args, data) != 0) {
+               rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS "
+                               "call for %s", data->path);
+               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
+                               data->private_data);
                free_nfs_cb_data(data);
                return -1;
        }
        return 0;
 }
 
-int nfs_open_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
+int nfs_open_async(struct nfs_context *nfs, const char *path, int flags, nfs_cb cb, void *private_data)
 {
-       if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_open_continue_internal, NULL, NULL, mode) != 0) {
+       if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_open_continue_internal, NULL, NULL, flags) != 0) {
                rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
                return -1;
        }
@@ -799,48 +1561,344 @@ int nfs_open_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb c
 }
 
 
+/*
+ * Async chdir()
+ */
+static int nfs_chdir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
+{
+       /* steal saved_path */
+       free(nfs->cwd);
+       nfs->cwd = data->saved_path;
+       data->saved_path = NULL;
+
+       data->cb(0, nfs, NULL, data->private_data);
+       free_nfs_cb_data(data);
 
+       return 0;
+}
+
+int nfs_chdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
+{
+       if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_chdir_continue_internal, NULL, NULL, 0) != 0) {
+               rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
+               return -1;
+       }
+
+       return 0;
+}
 
 
 /*
  * Async pread()
  */
-static void nfs_pread_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_fill_READ3args(READ3args *args, struct nfsfh *fh, uint64_t offset, uint64_t count)
 {
-       struct nfs_cb_data *data = private_data;
+       memset(args, 0, sizeof(READ3args));
+       args->file = fh->fh;
+       args->offset = offset;
+       args->count = count;
+}
+
+static void nfs_pread_mcb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       struct nfs_mcb_data *mdata = private_data;
+       struct nfs_cb_data *data = mdata->data;
        struct nfs_context *nfs = data->nfs;
        READ3res *res;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       data->num_calls--;
+
        if (status == RPC_STATUS_ERROR) {
+               /* flag the failure but do not invoke callback until we have received all responses */
+               data->error = 1;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               /* flag the cancellation but do not invoke callback until we have received all responses */
+               data->cancel = 1;
+       }
+
+       if (status == RPC_STATUS_SUCCESS) {
+               res = command_data;
+               if (res->status != NFS3_OK) {
+                       rpc_set_error(nfs->rpc, "NFS: Read failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+                       data->error = 1;
+               } else {
+                       uint64_t count = res->READ3res_u.resok.count;
+
+                       if (mdata->update_pos)
+                               data->nfsfh->offset += count;
+
+                       /* if we have more than one call or we have received a short read we need a reassembly buffer */
+                       if (data->num_calls || (count < mdata->count && !res->READ3res_u.resok.eof)) {
+                               if (data->buffer == NULL) {
+                                       data->buffer =  malloc(data->count);
+                                       if (data->buffer == NULL) {
+                                               rpc_set_error(nfs->rpc, "Out-Of-Memory: Failed to allocate reassembly buffer for %d bytes", (int)data->count);
+                                               data->oom = 1;
+                                       }
+                               }
+                       }
+                       if (count > 0) {
+                               if (count <= mdata->count) {
+                                       /* copy data into reassembly buffer if we have one */
+                                       if (data->buffer != NULL) {
+                                               memcpy(&data->buffer[mdata->offset - data->offset], res->READ3res_u.resok.data.data_val, count);
+                                       }
+                                       if (data->max_offset < mdata->offset + count) {
+                                               data->max_offset = mdata->offset + count;
+                                       }
+                               } else {
+                                       rpc_set_error(nfs->rpc, "NFS: Read overflow. Server has sent more data than requested!");
+                                       data->error = 1;
+                               }
+                       }
+                       /* check if we have received a short read */
+                       if (count < mdata->count && !res->READ3res_u.resok.eof) {
+                               if (count == 0) {
+                                       rpc_set_error(nfs->rpc, "NFS: Read failed. No bytes read and not at EOF!");
+                                       data->error = 1;
+                               } else {
+                                       /* reissue reminder of this read request */
+                                       READ3args args;
+                                       mdata->offset += count;
+                                       mdata->count -= count;
+                                       nfs_fill_READ3args(&args, data->nfsfh, mdata->offset, mdata->count);
+                                       if (rpc_nfs3_read_async(nfs->rpc, nfs_pread_mcb, &args, mdata) == 0) {
+                                               data->num_calls++;
+                                               return;
+                                       } else {
+                                               rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
+                                               data->oom = 1;
+                                       }
+                               }
+                       }
+               }
+       }
+
+       free(mdata);
+
+       if (data->num_calls > 0) {
+               /* still waiting for more replies */
+               return;
+       }
+       if (data->oom != 0) {
+               data->cb(-ENOMEM, nfs, command_data, data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+       if (data->error != 0) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
                return;
        }
-       if (status == RPC_STATUS_CANCEL) {
+       if (data->cancel != 0) {
                data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
                free_nfs_cb_data(data);
                return;
        }
 
-       res = command_data;
-       if (res->status != NFS3_OK) {
-               rpc_set_error(nfs->rpc, "NFS: Read failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
-               data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
-               free_nfs_cb_data(data);
-               return;
+       if (data->buffer) {
+               if (data->max_offset > data->org_offset + data->org_count) {
+                       data->max_offset = data->org_offset + data->org_count;
+               }
+               data->cb(data->max_offset - data->org_offset, nfs, data->buffer + (data->org_offset - data->offset), data->private_data);
+       } else {
+               data->cb(res->READ3res_u.resok.count, nfs, res->READ3res_u.resok.data.data_val, data->private_data);
        }
 
-       data->nfsfh->offset += res->READ3res_u.resok.count;
-       data->cb(res->READ3res_u.resok.count, nfs, res->READ3res_u.resok.data.data_val, data->private_data);
+       data->nfsfh->ra.fh_offset = data->max_offset;
+       if (data->nfsfh->ra.cur_ra) {
+               free(data->nfsfh->ra.buf);
+               data->nfsfh->ra.buf = data->buffer;
+               data->nfsfh->ra.buf_offset = data->offset;
+               data->nfsfh->ra.buf_count = data->count;
+               data->nfsfh->ra.buf_ts = time(NULL);
+               data->buffer = NULL;
+       }
        free_nfs_cb_data(data);
 }
 
-static void nfs_pread_mcb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_ra_invalidate(struct nfsfh *nfsfh) {
+       free(nfsfh->ra.buf);
+       nfsfh->ra.buf = NULL;
+       nfsfh->ra.buf_offset = 0;
+       nfsfh->ra.buf_count = 0;
+       nfsfh->ra.buf_ts = time(NULL);
+       nfsfh->ra.cur_ra = NFS_BLKSIZE;
+}
+
+static int nfs_pread_async_internal(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, nfs_cb cb, void *private_data, int update_pos)
+{
+       struct nfs_cb_data *data;
+
+       data = malloc(sizeof(struct nfs_cb_data));
+       if (data == NULL) {
+               rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
+               return -1;
+       }
+       memset(data, 0, sizeof(struct nfs_cb_data));
+       data->nfs          = nfs;
+       data->cb           = cb;
+       data->private_data = private_data;
+       data->nfsfh        = nfsfh;
+       data->org_offset   = offset;
+       data->org_count    = count;
+
+       assert(data->num_calls == 0);
+
+       if (nfs->rpc->readahead && time(NULL) - nfsfh->ra.buf_ts > NFS_RA_TIMEOUT) {
+               /* readahead cache timeout */
+               nfs_ra_invalidate(nfsfh);
+       }
+
+       if (nfs->rpc->readahead) {
+               if (offset >= nfsfh->ra.last_offset &&
+                       offset - NFS_BLKSIZE <= nfsfh->ra.fh_offset + nfsfh->ra.cur_ra) {
+                       if (nfs->rpc->readahead > nfsfh->ra.cur_ra) {
+                               nfsfh->ra.cur_ra <<= 1;
+                       }
+               } else {
+                       nfsfh->ra.cur_ra = NFS_BLKSIZE;
+               }
+
+               nfsfh->ra.last_offset = offset;
+
+               if (nfsfh->ra.buf_offset <= offset &&
+                       nfsfh->ra.buf_offset + nfsfh->ra.buf_count >= offset + count) {
+                       /* serve request completely from cache */
+                       data->buffer = malloc(count);
+                       if (data->buffer == NULL) {
+                               free_nfs_cb_data(data);
+                               return -ENOMEM;
+                       }
+                       memcpy(data->buffer, nfsfh->ra.buf + (offset - nfsfh->ra.buf_offset), count);
+                       data->cb(count, nfs, data->buffer, data->private_data);
+                       nfsfh->ra.fh_offset = offset + count;
+                       free_nfs_cb_data(data);
+                       return 0;
+               }
+
+               /* align start offset to blocksize */
+               count += offset & (NFS_BLKSIZE - 1);
+               offset &= ~(NFS_BLKSIZE - 1);
+
+               /* align end offset to blocksize and add readahead */
+               count += nfsfh->ra.cur_ra - 1;
+               count &= ~(NFS_BLKSIZE - 1);
+
+               data->buffer = malloc(count);
+               if (data->buffer == NULL) {
+                       free_nfs_cb_data(data);
+                       return -ENOMEM;
+               }
+               data->offset = offset;
+               data->count = count;
+
+               if (nfsfh->ra.buf_count && nfsfh->ra.buf_offset <= offset &&
+                       nfsfh->ra.buf_offset + nfsfh->ra.buf_count >= offset) {
+                       /* serve request partially from cache */
+                       size_t overlap = (nfsfh->ra.buf_offset + nfsfh->ra.buf_count) - offset;
+                       if (overlap > count) count = overlap;
+                       memcpy(data->buffer, nfsfh->ra.buf + (offset - nfsfh->ra.buf_offset), overlap);
+                       offset += overlap;
+                       count -= overlap;
+               }
+       } else {
+               data->offset = offset;
+               data->count = count;
+       }
+
+       data->max_offset = offset;
+
+       /* chop requests into chunks of at most READMAX bytes if necessary.
+        * we send all reads in parallel so that performance is still good.
+        */
+       do {
+               uint64_t readcount = count;
+               struct nfs_mcb_data *mdata;
+               READ3args args;
+
+               if (readcount > nfs_get_readmax(nfs)) {
+                       readcount = nfs_get_readmax(nfs);
+               }
+
+               mdata = malloc(sizeof(struct nfs_mcb_data));
+               if (mdata == NULL) {
+                       rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
+                       if (data->num_calls == 0) {
+                               free_nfs_cb_data(data);
+                               return -1;
+                       }
+                       data->oom = 1;
+                       break;
+               }
+               memset(mdata, 0, sizeof(struct nfs_mcb_data));
+               mdata->data   = data;
+               mdata->offset = offset;
+               mdata->count  = readcount;
+               mdata->update_pos = update_pos;
+
+               nfs_fill_READ3args(&args, nfsfh, offset, readcount);
+
+               if (rpc_nfs3_read_async(nfs->rpc, nfs_pread_mcb, &args, mdata) != 0) {
+                       rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
+                       free(mdata);
+                       if (data->num_calls == 0) {
+                               free_nfs_cb_data(data);
+                               return -1;
+                       }
+                       data->oom = 1;
+                       break;
+               }
+
+               count               -= readcount;
+               offset              += readcount;
+               data->num_calls++;
+        } while (count > 0);
+
+        return 0;
+}
+
+int nfs_pread_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, nfs_cb cb, void *private_data)
+{
+       return nfs_pread_async_internal(nfs, nfsfh, offset, count, cb, private_data, 0);
+}
+
+/*
+ * Async read()
+ */
+int nfs_read_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, nfs_cb cb, void *private_data)
+{
+       return nfs_pread_async_internal(nfs, nfsfh, nfsfh->offset, count, cb, private_data, 1);
+}
+
+
+
+/*
+ * Async pwrite()
+ */
+static void nfs_fill_WRITE3args (WRITE3args *args, struct nfsfh *fh, uint64_t offset, uint64_t count,
+                                 void *buf)
+{
+       memset(args, 0, sizeof(WRITE3args));
+       args->file = fh->fh;
+       args->offset = offset;
+       args->count  = count;
+       args->stable = fh->is_sync ? FILE_SYNC : UNSTABLE;
+       args->data.data_len = count;
+       args->data.data_val = buf;
+}
+
+static void nfs_pwrite_mcb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_mcb_data *mdata = private_data;
        struct nfs_cb_data *data = mdata->data;
        struct nfs_context *nfs = data->nfs;
-       READ3res *res;
+       WRITE3res *res;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        data->num_calls--;
 
@@ -853,49 +1911,75 @@ static void nfs_pread_mcb(struct rpc_context *rpc _U_, int status, void *command
                data->cancel = 1;
        }
 
-       /* reassemble the data into the buffer */
        if (status == RPC_STATUS_SUCCESS) {
                res = command_data;
                if (res->status != NFS3_OK) {
-                       rpc_set_error(nfs->rpc, "NFS: Read failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+                       rpc_set_error(nfs->rpc, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
                        data->error = 1;
                } else  {
-                       if (res->READ3res_u.resok.count > 0) {
-                               memcpy(&data->buffer[mdata->offset - data->start_offset], res->READ3res_u.resok.data.data_val, res->READ3res_u.resok.count);
-                               if ((unsigned)data->max_offset < mdata->offset + res->READ3res_u.resok.count) {
-                                       data->max_offset = mdata->offset + res->READ3res_u.resok.count;
+                       uint64_t count = res->WRITE3res_u.resok.count;
+
+                       if (mdata->update_pos)
+                               data->nfsfh->offset += count;
+
+                       if (count < mdata->count) {
+                               if (count == 0) {
+                                       rpc_set_error(nfs->rpc, "NFS: Write failed. No bytes written!");
+                                       data->error = 1;
+                               } else {
+                                       /* reissue reminder of this write request */
+                                       WRITE3args args;
+                                       mdata->offset += count;
+                                       mdata->count -= count;
+
+                                       nfs_fill_WRITE3args(&args, data->nfsfh, mdata->offset, mdata->count,
+                                                                               &data->usrbuf[mdata->offset - data->offset]);
+                                       if (rpc_nfs3_write_async(nfs->rpc, nfs_pwrite_mcb, &args, mdata) == 0) {
+                                               data->num_calls++;
+                                               return;
+                                       } else {
+                                               rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
+                                               data->oom = 1;
+                                       }
+                               }
+                       }
+                       if (count > 0) {
+                               if (data->max_offset < mdata->offset + count) {
+                                       data->max_offset = mdata->offset + count;
                                }
                        }
                }
        }
 
+       free(mdata);
+
        if (data->num_calls > 0) {
                /* still waiting for more replies */
-               free(mdata);
                return;
        }
-
+       if (data->oom != 0) {
+               data->cb(-ENOMEM, nfs, command_data, data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
        if (data->error != 0) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
-               free(mdata);
                return;
        }
        if (data->cancel != 0) {
                data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
                free_nfs_cb_data(data);
-               free(mdata);
                return;
        }
 
-       data->nfsfh->offset = data->max_offset;
-       data->cb(data->max_offset - data->start_offset, nfs, data->buffer, data->private_data);
+       data->cb(data->max_offset - data->offset, nfs, NULL, data->private_data);
 
        free_nfs_cb_data(data);
-       free(mdata);
 }
 
-int nfs_pread_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, nfs_cb cb, void *private_data)
+
+static int nfs_pwrite_async_internal(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, char *buf, nfs_cb cb, void *private_data, int update_pos)
 {
        struct nfs_cb_data *data;
 
@@ -904,89 +1988,83 @@ int nfs_pread_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset,
                rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
                return -1;
        }
-       bzero(data, sizeof(struct nfs_cb_data));
+       memset(data, 0, sizeof(struct nfs_cb_data));
        data->nfs          = nfs;
        data->cb           = cb;
        data->private_data = private_data;
        data->nfsfh        = nfsfh;
+       data->usrbuf       = buf;
 
-       nfsfh->offset = offset;
+       /* hello, clang-analyzer */
+       assert(data->num_calls == 0);
 
-       if (count <= nfs_get_readmax(nfs)) {
-               if (rpc_nfs_read_async(nfs->rpc, nfs_pread_cb, &nfsfh->fh, offset, count, data) != 0) {
-                       rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
-                       data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
-                       free_nfs_cb_data(data);
-                       return -1;
-               }
-               return 0;
-       }
-
-       /* trying to read more than maximum server read size, we has to chop it up into smaller
-        * reads and collect into a reassembly buffer.
-        * we send all reads in parallell so that performance is still good.
+       /* chop requests into chunks of at most WRITEMAX bytes if necessary.
+        * we send all writes in parallel so that performance is still good.
         */
-       data->max_offset = offset;
-       data->start_offset = offset;
-
-       data->buffer =  malloc(count);
-       if (data->buffer == NULL) {
-               rpc_set_error(nfs->rpc, "Out-Of-Memory: Failed to allocate reassembly buffer for %d bytes", (int)count);
-               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
-               free_nfs_cb_data(data);
-               return -1;
-       }
+       data->max_offset = offset;
+       data->offset = offset;
 
-       while (count > 0) {
-               size_t readcount = count;
+       do {
+               uint64_t writecount = count;
                struct nfs_mcb_data *mdata;
+               WRITE3args args;
 
-               if (readcount > nfs_get_readmax(nfs)) {
-                       readcount = nfs_get_readmax(nfs);
+               if (writecount > nfs_get_writemax(nfs)) {
+                       writecount = nfs_get_writemax(nfs);
                }
 
                mdata = malloc(sizeof(struct nfs_mcb_data));
                if (mdata == NULL) {
                        rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
-                       return -1;
+                       if (data->num_calls == 0) {
+                               free_nfs_cb_data(data);
+                               return -1;
+                       }
+                       data->oom = 1;
+                       break;
                }
-               bzero(mdata, sizeof(struct nfs_mcb_data));
+               memset(mdata, 0, sizeof(struct nfs_mcb_data));
                mdata->data   = data;
                mdata->offset = offset;
-               mdata->count  = readcount;
-               if (rpc_nfs_read_async(nfs->rpc, nfs_pread_mcb, &nfsfh->fh, offset, readcount, mdata) != 0) {
-                       rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
-                       data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+               mdata->count  = writecount;
+               mdata->update_pos = update_pos;
+
+               nfs_fill_WRITE3args(&args, nfsfh, offset, writecount, &buf[offset - data->offset]);
+
+               if (rpc_nfs3_write_async(nfs->rpc, nfs_pwrite_mcb, &args, mdata) != 0) {
+                       rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
                        free(mdata);
-                       return -1;
+                       if (data->num_calls == 0) {
+                               free_nfs_cb_data(data);
+                               return -1;
+                       }
+                       data->oom = 1;
+                       break;
                }
 
-               count               -= readcount;
-               offset              += readcount;
+               count               -= writecount;
+               offset              += writecount;
                data->num_calls++;
-        }
+       } while (count > 0);
 
-        return 0;
+       return 0;
 }
 
-/*
- * Async read()
- */
-int nfs_read_async(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, nfs_cb cb, void *private_data)
+int nfs_pwrite_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, char *buf, nfs_cb cb, void *private_data)
 {
-       return nfs_pread_async(nfs, nfsfh, nfsfh->offset, count, cb, private_data);
+       return nfs_pwrite_async_internal(nfs, nfsfh, offset, count, buf, cb, private_data, 0);
 }
 
-
-
 /*
- * Async pwrite()
+ * Async write()
  */
-static void nfs_pwrite_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_write_append_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
-       WRITE3res *res;
+       GETATTR3res *res;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
@@ -1001,48 +2079,51 @@ static void nfs_pwrite_cb(struct rpc_context *rpc _U_, int status, void *command
 
        res = command_data;
        if (res->status != NFS3_OK) {
-               rpc_set_error(nfs->rpc, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+               rpc_set_error(nfs->rpc, "NFS: GETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
                data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
                return;
        }
 
-       data->nfsfh->offset += res->WRITE3res_u.resok.count;
-       data->cb(res->WRITE3res_u.resok.count, nfs, NULL, data->private_data);
-       free_nfs_cb_data(data);
-}
-
-int nfs_pwrite_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, char *buf, nfs_cb cb, void *private_data)
-{
-       struct nfs_cb_data *data;
-
-       data = malloc(sizeof(struct nfs_cb_data));
-       if (data == NULL) {
-               rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
-               return -1;
-       }
-       bzero(data, sizeof(struct nfs_cb_data));
-       data->nfs          = nfs;
-       data->cb           = cb;
-       data->private_data = private_data;
-       data->nfsfh        = nfsfh;
-
-       nfsfh->offset = offset;
-       if (rpc_nfs_write_async(nfs->rpc, nfs_pwrite_cb, &nfsfh->fh, buf, offset, count, nfsfh->is_sync?FILE_SYNC:UNSTABLE, data) != 0) {
-               rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
+       if (nfs_pwrite_async_internal(nfs, data->nfsfh, res->GETATTR3res_u.resok.obj_attributes.size, data->count, data->usrbuf, data->cb, data->private_data, 1) != 0) {
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
-               return -1;
+               return;
        }
-       return 0;
+       free_nfs_cb_data(data);
 }
 
-/*
- * Async write()
- */
-int nfs_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, char *buf, nfs_cb cb, void *private_data)
+int nfs_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, char *buf, nfs_cb cb, void *private_data)
 {
-       return nfs_pwrite_async(nfs, nfsfh, nfsfh->offset, count, buf, cb, private_data);
+       nfs_ra_invalidate(nfsfh);
+       if (nfsfh->is_append) {
+               struct GETATTR3args args;
+               struct nfs_cb_data *data;
+
+               data = malloc(sizeof(struct nfs_cb_data));
+               if (data == NULL) {
+                       rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
+                       return -1;
+               }
+               memset(data, 0, sizeof(struct nfs_cb_data));
+               data->nfs           = nfs;
+               data->cb            = cb;
+               data->private_data  = private_data;
+               data->nfsfh         = nfsfh;
+               data->usrbuf        = buf;
+               data->count         = count;
+
+               memset(&args, 0, sizeof(GETATTR3args));
+               args.object = nfsfh->fh;
+
+               if (rpc_nfs3_getattr_async(nfs->rpc, nfs_write_append_cb, &args, data) != 0) {
+                       rpc_set_error(nfs->rpc, "out of memory: failed to send GETATTR");
+                       free_nfs_cb_data(data);
+                       return -1;
+               }
+               return 0;
+       }
+       return nfs_pwrite_async_internal(nfs, nfsfh, nfsfh->offset, count, buf, cb, private_data, 1);
 }
 
 
@@ -1051,13 +2132,14 @@ int nfs_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count,
 /*
  * close
  */
+
 int nfs_close_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
 {
        if (nfsfh->fh.data.data_val != NULL){
                free(nfsfh->fh.data.data_val);
                nfsfh->fh.data.data_val = NULL;
        }
+       free(nfsfh->ra.buf);
        free(nfsfh);
 
        cb(0, nfs, NULL, private_data);
@@ -1074,18 +2156,22 @@ int nfs_close_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, voi
 int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
 {
        struct nfs_cb_data *data;
+       struct GETATTR3args args;
 
        data = malloc(sizeof(struct nfs_cb_data));
        if (data == NULL) {
                rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
                return -1;
        }
-       bzero(data, sizeof(struct nfs_cb_data));
+       memset(data, 0, sizeof(struct nfs_cb_data));
        data->nfs          = nfs;
        data->cb           = cb;
        data->private_data = private_data;
 
-       if (rpc_nfs_getattr_async(nfs->rpc, nfs_stat_1_cb, &nfsfh->fh, data) != 0) {
+       memset(&args, 0, sizeof(GETATTR3args));
+       args.object = nfsfh->fh;
+
+       if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat_1_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -1099,12 +2185,14 @@ int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, voi
 /*
  * Async fsync()
  */
-static void nfs_fsync_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_fsync_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        COMMIT3res *res;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -1131,18 +2219,22 @@ static void nfs_fsync_cb(struct rpc_context *rpc _U_, int status, void *command_
 int nfs_fsync_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
 {
        struct nfs_cb_data *data;
+       struct COMMIT3args args;
 
        data = malloc(sizeof(struct nfs_cb_data));
        if (data == NULL) {
                rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
                return -1;
        }
-       bzero(data, sizeof(struct nfs_cb_data));
+       memset(data, 0, sizeof(struct nfs_cb_data));
        data->nfs          = nfs;
        data->cb           = cb;
        data->private_data = private_data;
 
-       if (rpc_nfs_commit_async(nfs->rpc, nfs_fsync_cb, &nfsfh->fh, data) != 0) {
+       args.file = nfsfh->fh;
+       args.offset = 0;
+       args.count = 0;
+       if (rpc_nfs3_commit_async(nfs->rpc, nfs_fsync_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send COMMIT call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -1157,12 +2249,14 @@ int nfs_fsync_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, voi
 /*
  * Async ftruncate()
  */
-static void nfs_ftruncate_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_ftruncate_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        SETATTR3res *res;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -1186,7 +2280,7 @@ static void nfs_ftruncate_cb(struct rpc_context *rpc _U_, int status, void *comm
        free_nfs_cb_data(data);
 }
 
-int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t length, nfs_cb cb, void *private_data)
+int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t length, nfs_cb cb, void *private_data)
 {
        struct nfs_cb_data *data;
        SETATTR3args args;
@@ -1196,18 +2290,17 @@ int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t leng
                rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
                return -1;
        }
-       bzero(data, sizeof(struct nfs_cb_data));
+       memset(data, 0, sizeof(struct nfs_cb_data));
        data->nfs          = nfs;
        data->cb           = cb;
        data->private_data = private_data;
 
-       bzero(&args, sizeof(SETATTR3args));
-       args.object.data.data_len = nfsfh->fh.data.data_len;
-       args.object.data.data_val = nfsfh->fh.data.data_val;
+       memset(&args, 0, sizeof(SETATTR3args));
+       args.object = nfsfh->fh;
        args.new_attributes.size.set_it = 1;
        args.new_attributes.size.set_size3_u.size = length;
 
-       if (rpc_nfs_setattr_async(nfs->rpc, nfs_ftruncate_cb, &args, data) != 0) {
+       if (rpc_nfs3_setattr_async(nfs->rpc, nfs_ftruncate_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -1220,13 +2313,12 @@ int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t leng
 /*
  * Async truncate()
  */
-static int nfs_truncate_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_truncate_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
-       off_t offset = data->continue_int;
+       uint64_t offset = data->continue_int;
        struct nfsfh nfsfh;
 
-       nfsfh.fh.data.data_val = data->fh.data.data_val;
-       nfsfh.fh.data.data_len = data->fh.data.data_len;
+       nfsfh.fh = data->fh;
 
        if (nfs_ftruncate_async(nfs, &nfsfh, offset, data->cb, data->private_data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
@@ -1238,9 +2330,9 @@ static int nfs_truncate_continue_internal(struct nfs_context *nfs, struct nfs_cb
        return 0;
 }
 
-int nfs_truncate_async(struct nfs_context *nfs, const char *path, off_t length, nfs_cb cb, void *private_data)
+int nfs_truncate_async(struct nfs_context *nfs, const char *path, uint64_t length, nfs_cb cb, void *private_data)
 {
-       off_t offset;
+       uint64_t offset;
 
        offset = length;
 
@@ -1258,13 +2350,15 @@ int nfs_truncate_async(struct nfs_context *nfs, const char *path, off_t length,
 /*
  * Async mkdir()
  */
-static void nfs_mkdir_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_mkdir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        MKDIR3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        char *str = data->continue_data;
-       
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        str = &str[strlen(str) + 1];
 
        if (status == RPC_STATUS_ERROR) {
@@ -1290,13 +2384,20 @@ static void nfs_mkdir_cb(struct rpc_context *rpc _U_, int status, void *command_
        free_nfs_cb_data(data);
 }
 
-static int nfs_mkdir_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_mkdir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        char *str = data->continue_data;
-       
+       MKDIR3args args;
+
        str = &str[strlen(str) + 1];
 
-       if (rpc_nfs_mkdir_async(nfs->rpc, nfs_mkdir_cb, &data->fh, str, data) != 0) {
+       memset(&args, 0, sizeof(MKDIR3args));
+       args.where.dir = data->fh;
+       args.where.name = str;
+       args.attributes.mode.set_it = 1;
+       args.attributes.mode.set_mode3_u.mode = 0755;
+
+       if (rpc_nfs3_mkdir_async(nfs->rpc, nfs_mkdir_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send MKDIR call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -1316,8 +2417,9 @@ int nfs_mkdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *
                return -1;
        }
 
-       ptr = rindex(new_path, '/');
+       ptr = strrchr(new_path, '/');
        if (ptr == NULL) {
+               free(new_path);
                rpc_set_error(nfs->rpc, "Invalid path %s", path);
                return -1;
        }
@@ -1339,13 +2441,15 @@ int nfs_mkdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *
 /*
  * Async rmdir()
  */
-static void nfs_rmdir_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_rmdir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        RMDIR3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        char *str = data->continue_data;
-       
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        str = &str[strlen(str) + 1];
 
        if (status == RPC_STATUS_ERROR) {
@@ -1371,13 +2475,16 @@ static void nfs_rmdir_cb(struct rpc_context *rpc _U_, int status, void *command_
        free_nfs_cb_data(data);
 }
 
-static int nfs_rmdir_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_rmdir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        char *str = data->continue_data;
-       
+       RMDIR3args args;
+
        str = &str[strlen(str) + 1];
 
-       if (rpc_nfs_rmdir_async(nfs->rpc, nfs_rmdir_cb, &data->fh, str, data) != 0) {
+       args.object.dir = data->fh;
+       args.object.name = str;
+       if (rpc_nfs3_rmdir_async(nfs->rpc, nfs_rmdir_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send RMDIR call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -1397,8 +2504,9 @@ int nfs_rmdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *
                return -1;
        }
 
-       ptr = rindex(new_path, '/');
+       ptr = strrchr(new_path, '/');
        if (ptr == NULL) {
+               free(new_path);
                rpc_set_error(nfs->rpc, "Invalid path %s", path);
                return -1;
        }
@@ -1419,7 +2527,7 @@ int nfs_rmdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *
 /*
  * Async creat()
  */
-static void nfs_create_2_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_create_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        LOOKUP3res *res;
        struct nfs_cb_data *data = private_data;
@@ -1427,6 +2535,8 @@ static void nfs_create_2_cb(struct rpc_context *rpc _U_, int status, void *comma
        struct nfsfh *nfsfh;
        char *str = data->continue_data;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -1454,12 +2564,12 @@ static void nfs_create_2_cb(struct rpc_context *rpc _U_, int status, void *comma
                free_nfs_cb_data(data);
                return;
        }
-       bzero(nfsfh, sizeof(struct nfsfh));
+       memset(nfsfh, 0, sizeof(struct nfsfh));
 
-       /* steal the filehandle */
-       nfsfh->fh.data.data_len = data->fh.data.data_len;
-       nfsfh->fh.data.data_val = data->fh.data.data_val;
-       data->fh.data.data_val = NULL;
+       /* copy the filehandle */
+       nfsfh->fh.data.data_len = res->LOOKUP3res_u.resok.object.data.data_len;
+       nfsfh->fh.data.data_val = malloc(nfsfh->fh.data.data_len);
+       memcpy(nfsfh->fh.data.data_val, res->LOOKUP3res_u.resok.object.data.data_val, nfsfh->fh.data.data_len);
 
        data->cb(0, nfs, nfsfh, data->private_data);
        free_nfs_cb_data(data);
@@ -1467,12 +2577,15 @@ static void nfs_create_2_cb(struct rpc_context *rpc _U_, int status, void *comma
 
 
 
-static void nfs_creat_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_creat_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        CREATE3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        char *str = data->continue_data;
+       LOOKUP3args args;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
@@ -1490,11 +2603,15 @@ static void nfs_creat_1_cb(struct rpc_context *rpc _U_, int status, void *comman
        if (res->status != NFS3_OK) {
                rpc_set_error(nfs->rpc, "NFS: CREATE of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
                data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
-
+               free_nfs_cb_data(data);
                return;
        }
 
-       if (rpc_nfs_lookup_async(nfs->rpc, nfs_create_2_cb, &data->fh, str, data) != 0) {
+       memset(&args, 0, sizeof(LOOKUP3args));
+       args.what.dir = data->fh;
+       args.what.name = str;
+
+       if (rpc_nfs3_lookup_async(nfs->rpc, nfs_create_2_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s/%s", data->saved_path, str);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -1503,13 +2620,21 @@ static void nfs_creat_1_cb(struct rpc_context *rpc _U_, int status, void *comman
        return;
 }
 
-static int nfs_creat_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_creat_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        char *str = data->continue_data;
-       
+       CREATE3args args;
+
        str = &str[strlen(str) + 1];
 
-       if (rpc_nfs_create_async(nfs->rpc, nfs_creat_1_cb, &data->fh, str, data->continue_int, data) != 0) {
+       memset(&args, 0, sizeof(CREATE3args));
+       args.where.dir = data->fh;
+       args.where.name = str;
+       args.how.mode = UNCHECKED;
+       args.how.createhow3_u.obj_attributes.mode.set_it = 1;
+       args.how.createhow3_u.obj_attributes.mode.set_mode3_u.mode = data->continue_int;
+
+       if (rpc_nfs3_create_async(nfs->rpc, nfs_creat_1_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send CREATE call for %s/%s", data->path, str);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -1529,14 +2654,15 @@ int nfs_creat_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb
                return -1;
        }
 
-       ptr = rindex(new_path, '/');
+       ptr = strrchr(new_path, '/');
        if (ptr == NULL) {
                rpc_set_error(nfs->rpc, "Invalid path %s", path);
+               free(new_path);
                return -1;
        }
        *ptr = 0;
 
-       /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
+       /* new_path now points to the parent directory,  and beyond the nul terminator is the new directory to create */
        if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_creat_continue_internal, new_path, free, mode) != 0) {
                rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
                return -1;
@@ -1551,103 +2677,475 @@ int nfs_creat_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb
 /*
  * Async unlink()
  */
-static void nfs_unlink_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_unlink_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        REMOVE3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
-       char *str = data->continue_data;
-       
-       str = &str[strlen(str) + 1];
+       char *str = data->continue_data;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       str = &str[strlen(str) + 1];
+
+       if (status == RPC_STATUS_ERROR) {
+               data->cb(-EFAULT, nfs, command_data, data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+       res = command_data;
+       if (res->status != NFS3_OK) {
+               rpc_set_error(nfs->rpc, "NFS: REMOVE of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+               data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+       data->cb(0, nfs, NULL, data->private_data);
+       free_nfs_cb_data(data);
+}
+
+static int nfs_unlink_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
+{
+       char *str = data->continue_data;
+       struct REMOVE3args args;
+
+       str = &str[strlen(str) + 1];
+
+       args.object.dir = data->fh;
+       args.object.name = str;
+       if (rpc_nfs3_remove_async(nfs->rpc, nfs_unlink_cb, &args, data) != 0) {
+               rpc_set_error(nfs->rpc, "RPC error: Failed to send REMOVE call for %s", data->path);
+               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return -1;
+       }
+       return 0;
+}
+
+int nfs_unlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
+{
+       char *new_path;
+       char *ptr;
+
+       new_path = strdup(path);
+       if (new_path == NULL) {
+               rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
+               return -1;
+       }
+
+       ptr = strrchr(new_path, '/');
+       if (ptr == NULL) {
+               free(new_path);
+               rpc_set_error(nfs->rpc, "Invalid path %s", path);
+               return -1;
+       }
+       *ptr = 0;
+
+       /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
+       if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_unlink_continue_internal, new_path, free, 0) != 0) {
+               rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
+               return -1;
+       }
+
+       return 0;
+}
+
+
+/*
+ * Async mknod()
+ */
+struct mknod_cb_data {
+       char *path;
+       int mode;
+       int major;
+       int minor;
+};
+
+static void free_mknod_cb_data(void *ptr)
+{
+       struct mknod_cb_data *data = ptr;
+
+       free(data->path);
+       free(data);
+}
+
+static void nfs_mknod_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       MKNOD3res *res;
+       struct nfs_cb_data *data = private_data;
+       struct nfs_context *nfs = data->nfs;
+       char *str = data->continue_data;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       str = &str[strlen(str) + 1];
+
+       if (status == RPC_STATUS_ERROR) {
+               data->cb(-EFAULT, nfs, command_data, data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+       res = command_data;
+       if (res->status != NFS3_OK) {
+               rpc_set_error(nfs->rpc, "NFS: MKNOD of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+               data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return;
+       }
+
+       data->cb(0, nfs, NULL, data->private_data);
+       free_nfs_cb_data(data);
+}
+
+static int nfs_mknod_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
+{
+       struct mknod_cb_data *cb_data = data->continue_data;
+       char *str = cb_data->path;
+       MKNOD3args args;
+
+       str = &str[strlen(str) + 1];
+
+       args.where.dir = data->fh;
+       args.where.name = str;
+       switch (cb_data->mode & S_IFMT) {
+       case S_IFCHR:
+               args.what.type = NF3CHR;
+               args.what.mknoddata3_u.chr_device.dev_attributes.mode.set_it = 1;
+               args.what.mknoddata3_u.chr_device.dev_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
+               args.what.mknoddata3_u.chr_device.spec.specdata1 = cb_data->major;
+               args.what.mknoddata3_u.chr_device.spec.specdata2 = cb_data->minor;
+               break;
+       case S_IFBLK:
+               args.what.type = NF3BLK;
+               args.what.mknoddata3_u.blk_device.dev_attributes.mode.set_it = 1;
+               args.what.mknoddata3_u.blk_device.dev_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
+               args.what.mknoddata3_u.blk_device.spec.specdata1 = cb_data->major;
+               args.what.mknoddata3_u.blk_device.spec.specdata2 = cb_data->minor;
+       case S_IFSOCK:
+               args.what.type = NF3SOCK;
+               args.what.mknoddata3_u.sock_attributes.mode.set_it = 1;
+               args.what.mknoddata3_u.sock_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
+               break;
+       case S_IFIFO:
+               args.what.type = NF3FIFO;
+               args.what.mknoddata3_u.pipe_attributes.mode.set_it = 1;
+               args.what.mknoddata3_u.pipe_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
+               break;
+       default:
+               rpc_set_error(nfs->rpc, "Invalid file type for NFS3/MKNOD call");
+               data->cb(-EINVAL, nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return -1;
+       }
+
+       if (rpc_nfs3_mknod_async(nfs->rpc, nfs_mknod_cb, &args, data) != 0) {
+               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return -1;
+       }
+       return 0;
+}
+
+int nfs_mknod_async(struct nfs_context *nfs, const char *path, int mode, int dev, nfs_cb cb, void *private_data)
+{
+       char *ptr;
+       struct mknod_cb_data *cb_data;
+
+       cb_data = malloc(sizeof(struct mknod_cb_data));
+       if (cb_data == NULL) {
+               rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for cb data");
+               return -1;
+       }
+
+       cb_data->path = strdup(path);
+       if (cb_data->path == NULL) {
+               rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
+               free(cb_data);
+               return -1;
+       }
+
+       ptr = strrchr(cb_data->path, '/');
+       if (ptr == NULL) {
+               rpc_set_error(nfs->rpc, "Invalid path %s", path);
+               free_mknod_cb_data(cb_data);
+               return -1;
+       }
+       *ptr = 0;
+
+       cb_data->mode = mode;
+       cb_data->major = major(dev);
+       cb_data->minor = minor(dev);
+
+       /* data->path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
+       if (nfs_lookuppath_async(nfs, cb_data->path, cb, private_data, nfs_mknod_continue_internal, cb_data, free_mknod_cb_data, 0) != 0) {
+               rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
+               return -1;
+       }
+
+       return 0;
+}
+
+/*
+ * Async opendir()
+ */
+
+/* ReadDirPlus Emulation Callback data */
+struct rdpe_cb_data {
+       int getattrcount;
+       int status;
+       struct nfs_cb_data *data;
+};
+
+/* ReadDirPlus Emulation LOOKUP Callback data */
+struct rdpe_lookup_cb_data {
+       struct rdpe_cb_data *rdpe_cb_data;
+       struct nfsdirent *nfsdirent;
+};
+
+/* Workaround for servers lacking READDIRPLUS, use READDIR instead and a GETATTR-loop */
+static void nfs_opendir3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       LOOKUP3res *res = command_data;
+       struct rdpe_lookup_cb_data *rdpe_lookup_cb_data = private_data;
+       struct rdpe_cb_data *rdpe_cb_data = rdpe_lookup_cb_data->rdpe_cb_data;
+       struct nfs_cb_data *data = rdpe_cb_data->data;
+       struct nfsdir *nfsdir = data->continue_data;
+       struct nfs_context *nfs = data->nfs;
+       struct nfsdirent *nfsdirent = rdpe_lookup_cb_data->nfsdirent;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       free(rdpe_lookup_cb_data);
+
+       rdpe_cb_data->getattrcount--;
+
+       if (status == RPC_STATUS_ERROR) {
+               rpc_set_error(nfs->rpc, "LOOKUP during READDIRPLUS emulation "
+                             "failed with RPC_STATUS_ERROR");
+               rdpe_cb_data->status = RPC_STATUS_ERROR;
+       }
+       if (status == RPC_STATUS_CANCEL) {
+               rpc_set_error(nfs->rpc, "LOOKUP during READDIRPLUS emulation "
+                             "failed with RPC_STATUS_CANCEL");
+               rdpe_cb_data->status = RPC_STATUS_CANCEL;
+       }
+       if (status == RPC_STATUS_SUCCESS && res->status == NFS3_OK) {
+               if (res->LOOKUP3res_u.resok.obj_attributes.attributes_follow) {
+                       fattr3 *attributes = &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes;
+
+                       nfsdirent->type = attributes->type;
+                       nfsdirent->mode = attributes->mode;
+                       nfsdirent->size = attributes->size;
+
+                       nfsdirent->atime.tv_sec  = attributes->atime.seconds;
+                       nfsdirent->atime.tv_usec = attributes->atime.nseconds/1000;
+                       nfsdirent->mtime.tv_sec  = attributes->mtime.seconds;
+                       nfsdirent->mtime.tv_usec = attributes->mtime.nseconds/1000;
+                       nfsdirent->ctime.tv_sec  = attributes->ctime.seconds;
+                       nfsdirent->ctime.tv_usec = attributes->ctime.nseconds/1000;
+                       nfsdirent->uid = attributes->uid;
+                       nfsdirent->gid = attributes->gid;
+                       nfsdirent->nlink = attributes->nlink;
+               }
+       }
+
+       if (rdpe_cb_data->getattrcount == 0) {
+               if (rdpe_cb_data->status != RPC_STATUS_SUCCESS) {
+                       rpc_set_error(nfs->rpc, "READDIRPLUS emulation "
+                             "failed: %s", rpc_get_error(rpc));
+                       data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
+                               data->private_data);
+                       nfs_free_nfsdir(nfsdir);
+               } else {
+                       data->cb(0, nfs, nfsdir, data->private_data);
+               }
+               free(rdpe_cb_data);
+
+               data->continue_data = NULL;
+               free_nfs_cb_data(data);
+       }
+}
+
+static void nfs_opendir2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
+{
+       READDIR3res *res = command_data;
+       struct nfs_cb_data *data = private_data;
+       struct nfs_context *nfs = data->nfs;
+       struct nfsdir *nfsdir = data->continue_data;
+       struct nfsdirent *nfsdirent;
+       struct entry3 *entry;
+       uint64_t cookie = 0;
+       struct rdpe_cb_data *rdpe_cb_data;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
+               nfs_free_nfsdir(nfsdir);
+               data->continue_data = NULL;
                free_nfs_cb_data(data);
                return;
        }
+
        if (status == RPC_STATUS_CANCEL) {
                data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
+               nfs_free_nfsdir(nfsdir);
+               data->continue_data = NULL;
                free_nfs_cb_data(data);
                return;
        }
 
-       res = command_data;
        if (res->status != NFS3_OK) {
-               rpc_set_error(nfs->rpc, "NFS: REMOVE of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+               rpc_set_error(nfs->rpc, "NFS: READDIR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
                data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
+               nfs_free_nfsdir(nfsdir);
+               data->continue_data = NULL;
                free_nfs_cb_data(data);
                return;
        }
 
-       data->cb(0, nfs, NULL, data->private_data);
-       free_nfs_cb_data(data);
-}
+       entry =res->READDIR3res_u.resok.reply.entries;
+       while (entry != NULL) {
+               nfsdirent = malloc(sizeof(struct nfsdirent));
+               if (nfsdirent == NULL) {
+                       data->cb(-ENOMEM, nfs, "Failed to allocate dirent", data->private_data);
+                       nfs_free_nfsdir(nfsdir);
+                       data->continue_data = NULL;
+                       free_nfs_cb_data(data);
+                       return;
+               }
+               memset(nfsdirent, 0, sizeof(struct nfsdirent));
+               nfsdirent->name = strdup(entry->name);
+               if (nfsdirent->name == NULL) {
+                       data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
+                       free(nfsdirent);
+                       nfs_free_nfsdir(nfsdir);
+                       data->continue_data = NULL;
+                       free_nfs_cb_data(data);
+                       return;
+               }
+               nfsdirent->inode = entry->fileid;
 
-static int nfs_unlink_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
-{
-       char *str = data->continue_data;
-       
-       str = &str[strlen(str) + 1];
+               nfsdirent->next  = nfsdir->entries;
+               nfsdir->entries  = nfsdirent;
 
-       if (rpc_nfs_remove_async(nfs->rpc, nfs_unlink_cb, &data->fh, str, data) != 0) {
-               rpc_set_error(nfs->rpc, "RPC error: Failed to send REMOVE call for %s", data->path);
-               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
-               free_nfs_cb_data(data);
-               return -1;
+               cookie = entry->cookie;
+               entry  = entry->nextentry;
        }
-       return 0;
-}
-
-int nfs_unlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
-{
-       char *new_path;
-       char *ptr;
 
-       new_path = strdup(path);
-       if (new_path == NULL) {
-               rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
-               return -1;
-       }
+       if (res->READDIR3res_u.resok.reply.eof == 0) {
+               READDIR3args args;
 
-       ptr = rindex(new_path, '/');
-       if (ptr == NULL) {
-               rpc_set_error(nfs->rpc, "Invalid path %s", path);
-               return -1;
-       }
-       *ptr = 0;
+               args.dir = data->fh;
+               args.cookie = cookie;
+               memcpy(&args.cookieverf, res->READDIR3res_u.resok.cookieverf, sizeof(cookieverf3));
+               args.count = 8192;
 
-       /* new_path now points to the parent directory,  and beyond the nul terminateor is the new directory to create */
-       if (nfs_lookuppath_async(nfs, new_path, cb, private_data, nfs_unlink_continue_internal, new_path, free, 0) != 0) {
-               rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
-               return -1;
+               if (rpc_nfs3_readdir_async(nfs->rpc, nfs_opendir2_cb, &args, data) != 0) {
+                       rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
+                       data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+                       nfs_free_nfsdir(nfsdir);
+                       data->continue_data = NULL;
+                       free_nfs_cb_data(data);
+                       return;
+               }
+               return;
        }
 
-       return 0;
-}
-
+       if (res->READDIR3res_u.resok.dir_attributes.attributes_follow)
+               nfsdir->attr = res->READDIR3res_u.resok.dir_attributes.post_op_attr_u.attributes;
 
+       /* steal the dirhandle */
+       nfsdir->current = nfsdir->entries;
 
+       if (nfsdir->entries) {
+               rdpe_cb_data = malloc(sizeof(struct rdpe_cb_data));
+               rdpe_cb_data->getattrcount = 0;
+               rdpe_cb_data->status = RPC_STATUS_SUCCESS;
+               rdpe_cb_data->data = data;
+               for (nfsdirent = nfsdir->entries; nfsdirent; nfsdirent = nfsdirent->next) {
+                       struct rdpe_lookup_cb_data *rdpe_lookup_cb_data;
+                       LOOKUP3args args;
+
+                       rdpe_lookup_cb_data = malloc(sizeof(struct rdpe_lookup_cb_data));
+                       rdpe_lookup_cb_data->rdpe_cb_data = rdpe_cb_data;
+                       rdpe_lookup_cb_data->nfsdirent = nfsdirent;
+
+                       memset(&args, 0, sizeof(LOOKUP3args));
+                       args.what.dir = data->fh;
+                       args.what.name = nfsdirent->name;
+
+                       if (rpc_nfs3_lookup_async(nfs->rpc, nfs_opendir3_cb, &args, rdpe_lookup_cb_data) != 0) {
+                               rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR LOOKUP call");
+
+                               /* if we have already commands in flight, we cant just stop, we have to wait for the
+                                * commands in flight to complete
+                                */
+                               if (rdpe_cb_data->getattrcount > 0) {
+                                       nfs_free_nfsdir(nfsdir);
+                                       data->continue_data = NULL;
+                                       free_nfs_cb_data(data);
+                                       rdpe_cb_data->status = RPC_STATUS_ERROR;
+                                       free(rdpe_lookup_cb_data);
+                                       return;
+                               }
 
+                               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+                               nfs_free_nfsdir(nfsdir);
+                               data->continue_data = NULL;
+                               free_nfs_cb_data(data);
+                               free(rdpe_lookup_cb_data);
+                               free(rdpe_cb_data);
+                               return;
+                       }
+                       rdpe_cb_data->getattrcount++;
+               }
+       }
+}
 
-/*
- * Async opendir()
- */
-static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_opendir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
-       READDIR3res *res;
+       READDIRPLUS3res *res = command_data;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
-       struct nfsdir *nfsdir = data->continue_data;;
-       struct entry3 *entry;
-       uint64_t cookie;
-       
-       if (status == RPC_STATUS_ERROR) {
-               data->cb(-EFAULT, nfs, command_data, data->private_data);
-               nfs_free_nfsdir(nfsdir);
-               data->continue_data = NULL;
-               free_nfs_cb_data(data);
+       struct nfsdir *nfsdir = data->continue_data;
+       struct entryplus3 *entry;
+       uint64_t cookie = 0;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       if (status == RPC_STATUS_ERROR || (status == RPC_STATUS_SUCCESS && res->status == NFS3ERR_NOTSUPP) ){
+               READDIR3args args;
+
+               args.dir = data->fh;
+               args.cookie = cookie;
+               memset(&args.cookieverf, 0, sizeof(cookieverf3));
+               args.count = 8192;
+
+               if (rpc_nfs3_readdir_async(nfs->rpc, nfs_opendir2_cb, &args, data) != 0) {
+                       rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
+                       data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+                       nfs_free_nfsdir(nfsdir);
+                       data->continue_data = NULL;
+                       free_nfs_cb_data(data);
+                       return;
+               }
                return;
        }
+
        if (status == RPC_STATUS_CANCEL) {
                data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
                nfs_free_nfsdir(nfsdir);
@@ -1656,9 +3154,8 @@ static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *comman
                return;
        }
 
-       res = command_data;
        if (res->status != NFS3_OK) {
-               rpc_set_error(nfs->rpc, "NFS: READDIR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+               rpc_set_error(nfs->rpc, "NFS: READDIRPLUS of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
                data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
                nfs_free_nfsdir(nfsdir);
                data->continue_data = NULL;
@@ -1666,7 +3163,7 @@ static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *comman
                return;
        }
 
-       entry =res->READDIR3res_u.resok.reply.entries;
+       entry =res->READDIRPLUS3res_u.resok.reply.entries;
        while (entry != NULL) {
                struct nfsdirent *nfsdirent;
 
@@ -1678,16 +3175,33 @@ static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *comman
                        free_nfs_cb_data(data);
                        return;
                }
-               bzero(nfsdirent, sizeof(struct nfsdirent));
+               memset(nfsdirent, 0, sizeof(struct nfsdirent));
                nfsdirent->name = strdup(entry->name);
                if (nfsdirent->name == NULL) {
                        data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
+                       free(nfsdirent);
                        nfs_free_nfsdir(nfsdir);
                        data->continue_data = NULL;
                        free_nfs_cb_data(data);
                        return;
                }
                nfsdirent->inode = entry->fileid;
+               if (entry->name_attributes.attributes_follow) {
+                       nfsdirent->type = entry->name_attributes.post_op_attr_u.attributes.type;
+                       nfsdirent->mode = entry->name_attributes.post_op_attr_u.attributes.mode;
+                       nfsdirent->size = entry->name_attributes.post_op_attr_u.attributes.size;
+
+                       nfsdirent->atime.tv_sec  = entry->name_attributes.post_op_attr_u.attributes.atime.seconds;
+                       nfsdirent->atime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.atime.nseconds/1000;
+                       nfsdirent->mtime.tv_sec  = entry->name_attributes.post_op_attr_u.attributes.mtime.seconds;
+                       nfsdirent->mtime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.mtime.nseconds/1000;
+                       nfsdirent->ctime.tv_sec  = entry->name_attributes.post_op_attr_u.attributes.ctime.seconds;
+                       nfsdirent->ctime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.ctime.nseconds/1000;
+                       nfsdirent->uid = entry->name_attributes.post_op_attr_u.attributes.uid;
+                       nfsdirent->gid = entry->name_attributes.post_op_attr_u.attributes.gid;
+                       nfsdirent->nlink = entry->name_attributes.post_op_attr_u.attributes.nlink;
+               }
+
                nfsdirent->next  = nfsdir->entries;
                nfsdir->entries  = nfsdirent;
 
@@ -1695,9 +3209,17 @@ static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *comman
                entry  = entry->nextentry;
        }
 
-       if (res->READDIR3res_u.resok.reply.eof == 0) {
-               if (rpc_nfs_readdir_async(nfs->rpc, nfs_opendir_cb, &data->fh, cookie, res->READDIR3res_u.resok.cookieverf, 20000, data) != 0) {
-                       rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
+       if (res->READDIRPLUS3res_u.resok.reply.eof == 0) {
+               READDIRPLUS3args args;
+
+               args.dir = data->fh;
+               args.cookie = cookie;
+               memcpy(&args.cookieverf, res->READDIRPLUS3res_u.resok.cookieverf, sizeof(cookieverf3));
+               args.dircount = 8192;
+               args.maxcount = 8192;
+
+               if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs_opendir_cb, &args, data) != 0) {
+                       rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
                        data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                        nfs_free_nfsdir(nfsdir);
                        data->continue_data = NULL;
@@ -1707,6 +3229,9 @@ static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *comman
                return;
        }
 
+       if (res->READDIRPLUS3res_u.resok.dir_attributes.attributes_follow)
+               nfsdir->attr = res->READDIRPLUS3res_u.resok.dir_attributes.post_op_attr_u.attributes;
+
        /* steal the dirhandle */
        data->continue_data = NULL;
        nfsdir->current = nfsdir->entries;
@@ -1715,13 +3240,42 @@ static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *comman
        free_nfs_cb_data(data);
 }
 
-static int nfs_opendir_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_opendir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
-       cookieverf3 cv;
+       READDIRPLUS3args args;
+       struct nfsdir *nfsdir = data->continue_data;;
+       struct nfsdir *cached;
+
+       cached = nfs_dircache_find(nfs, &data->fh);
+       if (cached) {
+               if (attr && attr->mtime.seconds == cached->attr.mtime.seconds) {
+                       cached->current = cached->entries;
+                       data->cb(0, nfs, cached, data->private_data);
+                       free_nfs_cb_data(data);
+                       return 0;
+               } else {
+                       /* cache must be stale */
+                       nfs_free_nfsdir(cached);
+               }
+       }
+
+       nfsdir->fh.data.data_len  = data->fh.data.data_len;
+       nfsdir->fh.data.data_val = malloc(nfsdir->fh.data.data_len);
+       if (nfsdir->fh.data.data_val == NULL) {
+               rpc_set_error(nfs->rpc, "OOM when allocating fh for nfsdir");
+               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return -1;
+       }
+       memcpy(nfsdir->fh.data.data_val, data->fh.data.data_val, data->fh.data.data_len);
 
-       bzero(cv, sizeof(cookieverf3));
-       if (rpc_nfs_readdir_async(nfs->rpc, nfs_opendir_cb, &data->fh, 0, (char *)&cv, 20000, data) != 0) {
-               rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
+       args.dir = data->fh;
+       args.cookie = 0;
+       memset(&args.cookieverf, 0, sizeof(cookieverf3));
+       args.dircount = 8192;
+       args.maxcount = 8192;
+       if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs_opendir_cb, &args, data) != 0) {
+               rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
                return -1;
@@ -1738,7 +3292,7 @@ int nfs_opendir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void
                rpc_set_error(nfs->rpc, "failed to allocate buffer for nfsdir");
                return -1;
        }
-       bzero(nfsdir, sizeof(struct nfsdir));
+       memset(nfsdir, 0, sizeof(struct nfsdir));
 
        if (nfs_lookuppath_async(nfs, path, cb, private_data, nfs_opendir_continue_internal, nfsdir, free, 0) != 0) {
                rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
@@ -1760,15 +3314,24 @@ struct nfsdirent *nfs_readdir(struct nfs_context *nfs _U_, struct nfsdir *nfsdir
 }
 
 
-void nfs_closedir(struct nfs_context *nfs _U_, struct nfsdir *nfsdir)
+/*
+ * closedir()
+ */
+void nfs_closedir(struct nfs_context *nfs, struct nfsdir *nfsdir)
 {
-       nfs_free_nfsdir(nfsdir);
+       nfs_dircache_add(nfs, nfsdir);
 }
 
 
-
-
-
+/*
+ * getcwd()
+ */
+void nfs_getcwd(struct nfs_context *nfs, const char **cwd)
+{
+       if (cwd) {
+               *cwd = nfs->cwd;
+       }
+}
 
 
 /*
@@ -1777,16 +3340,19 @@ void nfs_closedir(struct nfs_context *nfs _U_, struct nfsdir *nfsdir)
 struct lseek_cb_data {
        struct nfs_context *nfs;
        struct nfsfh *nfsfh;
-       off_t offset;
+       int64_t offset;
        nfs_cb cb;
        void *private_data;
 };
 
-static void nfs_lseek_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_lseek_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        GETATTR3res *res;
        struct lseek_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
+       uint64_t size = 0;
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
@@ -1807,23 +3373,41 @@ static void nfs_lseek_1_cb(struct rpc_context *rpc _U_, int status, void *comman
                return;
        }
 
-       data->nfsfh->offset = data->offset + res->GETATTR3res_u.resok.obj_attributes.size;
-       data->cb(0, nfs, &data->nfsfh->offset, data->private_data);
+       size = res->GETATTR3res_u.resok.obj_attributes.size;
+
+       if (data->offset < 0 &&
+           (uint64_t)(-data->offset) > size) {
+               data->cb(-EINVAL, nfs, &data->nfsfh->offset, data->private_data);
+       } else {
+               data->nfsfh->offset = data->offset + size;
+               data->cb(0, nfs, &data->nfsfh->offset, data->private_data);
+       }
+
        free(data);
 }
 
-int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, int whence, nfs_cb cb, void *private_data)
+int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int64_t offset, int whence, nfs_cb cb, void *private_data)
 {
        struct lseek_cb_data *data;
+       struct GETATTR3args args;
 
        if (whence == SEEK_SET) {
-               nfsfh->offset = offset;
-               cb(0, nfs, &nfsfh->offset, private_data);
+               if (offset < 0) {
+                       cb(-EINVAL, nfs, &nfsfh->offset, private_data);
+               } else {
+                       nfsfh->offset = offset;
+                       cb(0, nfs, &nfsfh->offset, private_data);
+               }
                return 0;
        }
        if (whence == SEEK_CUR) {
-               nfsfh->offset += offset;
-               cb(0, nfs, &nfsfh->offset, private_data);
+               if (offset < 0 &&
+                   nfsfh->offset < (uint64_t)(-offset)) {
+                       cb(-EINVAL, nfs, &nfsfh->offset, private_data);
+               } else {
+                       nfsfh->offset += offset;
+                       cb(0, nfs, &nfsfh->offset, private_data);
+               }
                return 0;
        }
 
@@ -1839,7 +3423,10 @@ int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset,
        data->cb           = cb;
        data->private_data = private_data;
 
-       if (rpc_nfs_getattr_async(nfs->rpc, nfs_lseek_1_cb, &nfsfh->fh, data) != 0) {
+       memset(&args, 0, sizeof(GETATTR3args));
+       args.object = nfsfh->fh;
+
+       if (rpc_nfs3_getattr_async(nfs->rpc, nfs_lseek_1_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send LSEEK GETATTR call");
                free(data);
                return -1;
@@ -1853,13 +3440,15 @@ int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset,
 /*
  * Async statvfs()
  */
-static void nfs_statvfs_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_statvfs_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        FSSTAT3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        struct statvfs svfs;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -1879,25 +3468,30 @@ static void nfs_statvfs_1_cb(struct rpc_context *rpc _U_, int status, void *comm
                return;
        }
 
-       svfs.f_bsize   = 4096;
-       svfs.f_frsize  = 4096;
-       svfs.f_blocks  = res->FSSTAT3res_u.resok.tbytes/4096;
-       svfs.f_bfree   = res->FSSTAT3res_u.resok.fbytes/4096;
-       svfs.f_bavail  = res->FSSTAT3res_u.resok.abytes/4096;
+       svfs.f_bsize   = NFS_BLKSIZE;
+       svfs.f_frsize  = NFS_BLKSIZE;
+       svfs.f_blocks  = res->FSSTAT3res_u.resok.tbytes/NFS_BLKSIZE;
+       svfs.f_bfree   = res->FSSTAT3res_u.resok.fbytes/NFS_BLKSIZE;
+       svfs.f_bavail  = res->FSSTAT3res_u.resok.abytes/NFS_BLKSIZE;
        svfs.f_files   = res->FSSTAT3res_u.resok.tfiles;
        svfs.f_ffree   = res->FSSTAT3res_u.resok.ffiles;
+#if !defined(ANDROID)
        svfs.f_favail  = res->FSSTAT3res_u.resok.afiles;
        svfs.f_fsid    = 0;
        svfs.f_flag    = 0;
        svfs.f_namemax = 256;
+#endif
 
        data->cb(0, nfs, &svfs, data->private_data);
        free_nfs_cb_data(data);
 }
 
-static int nfs_statvfs_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_statvfs_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
-       if (rpc_nfs_fsstat_async(nfs->rpc, nfs_statvfs_1_cb, &data->fh, data) != 0) {
+       FSSTAT3args args;
+
+       args.fsroot = data->fh;
+       if (rpc_nfs3_fsstat_async(nfs->rpc, nfs_statvfs_1_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send FSSTAT call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -1922,12 +3516,14 @@ int nfs_statvfs_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void
 /*
  * Async readlink()
  */
-static void nfs_readlink_1_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_readlink_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        READLINK3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -1947,14 +3543,18 @@ static void nfs_readlink_1_cb(struct rpc_context *rpc _U_, int status, void *com
                return;
        }
 
-       
+
        data->cb(0, nfs, res->READLINK3res_u.resok.data, data->private_data);
        free_nfs_cb_data(data);
 }
 
-static int nfs_readlink_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_readlink_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
-       if (rpc_nfs_readlink_async(nfs->rpc, nfs_readlink_1_cb, &data->fh, data) != 0) {
+       READLINK3args args;
+
+       args.symlink = data->fh;
+
+       if (rpc_nfs3_readlink_async(nfs->rpc, nfs_readlink_1_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send READLINK call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -1979,12 +3579,14 @@ int nfs_readlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, voi
 /*
  * Async chmod()
  */
-static void nfs_chmod_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_chmod_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        SETATTR3res *res;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -2008,17 +3610,16 @@ static void nfs_chmod_cb(struct rpc_context *rpc _U_, int status, void *command_
        free_nfs_cb_data(data);
 }
 
-static int nfs_chmod_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_chmod_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        SETATTR3args args;
 
-       bzero(&args, sizeof(SETATTR3args));
-       args.object.data.data_len = data->fh.data.data_len;
-       args.object.data.data_val = data->fh.data.data_val;
+       memset(&args, 0, sizeof(SETATTR3args));
+       args.object = data->fh;
        args.new_attributes.mode.set_it = 1;
        args.new_attributes.mode.set_mode3_u.mode = data->continue_int;
 
-       if (rpc_nfs_setattr_async(nfs->rpc, nfs_chmod_cb, &args, data) != 0) {
+       if (rpc_nfs3_setattr_async(nfs->rpc, nfs_chmod_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -2050,7 +3651,7 @@ int nfs_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode, nfs
                rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
                return -1;
        }
-       bzero(data, sizeof(struct nfs_cb_data));
+       memset(data, 0, sizeof(struct nfs_cb_data));
        data->nfs          = nfs;
        data->cb           = cb;
        data->private_data = private_data;
@@ -2064,8 +3665,7 @@ int nfs_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode, nfs
        }
        memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
 
-       if (nfs_chmod_continue_internal(nfs, data) != 0) {
-               free_nfs_cb_data(data);
+       if (nfs_chmod_continue_internal(nfs, NULL, data) != 0) {
                return -1;
        }
 
@@ -2077,12 +3677,14 @@ int nfs_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode, nfs
 /*
  * Async chown()
  */
-static void nfs_chown_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_chown_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        SETATTR3res *res;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -2111,14 +3713,13 @@ struct nfs_chown_data {
        gid_t gid;
 };
 
-static int nfs_chown_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_chown_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        SETATTR3args args;
        struct nfs_chown_data *chown_data = data->continue_data;
 
-       bzero(&args, sizeof(SETATTR3args));
-       args.object.data.data_len = data->fh.data.data_len;
-       args.object.data.data_val = data->fh.data.data_val;
+       memset(&args, 0, sizeof(SETATTR3args));
+       args.object = data->fh;
        if (chown_data->uid != (uid_t)-1) {
                args.new_attributes.uid.set_it = 1;
                args.new_attributes.uid.set_uid3_u.uid = chown_data->uid;
@@ -2128,7 +3729,7 @@ static int nfs_chown_continue_internal(struct nfs_context *nfs, struct nfs_cb_da
                args.new_attributes.gid.set_gid3_u.gid = chown_data->gid;
        }
 
-       if (rpc_nfs_setattr_async(nfs->rpc, nfs_chown_cb, &args, data) != 0) {
+       if (rpc_nfs3_setattr_async(nfs->rpc, nfs_chown_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -2177,17 +3778,18 @@ int nfs_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int
        chown_data->uid = uid;
        chown_data->gid = gid;
 
-
        data = malloc(sizeof(struct nfs_cb_data));
        if (data == NULL) {
                rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for fchown data");
+               free(chown_data);
                return -1;
        }
-       bzero(data, sizeof(struct nfs_cb_data));
+       memset(data, 0, sizeof(struct nfs_cb_data));
        data->nfs           = nfs;
        data->cb            = cb;
        data->private_data  = private_data;
        data->continue_data = chown_data;
+       data->free_continue_data = free;
        data->fh.data.data_len = nfsfh->fh.data.data_len;
        data->fh.data.data_val = malloc(data->fh.data.data_len);
        if (data->fh.data.data_val == NULL) {
@@ -2197,9 +3799,7 @@ int nfs_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int
        }
        memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
 
-
-       if (nfs_chown_continue_internal(nfs, data) != 0) {
-               free_nfs_cb_data(data);
+       if (nfs_chown_continue_internal(nfs, NULL, data) != 0) {
                return -1;
        }
 
@@ -2213,12 +3813,14 @@ int nfs_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int
 /*
  * Async utimes()
  */
-static void nfs_utimes_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_utimes_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        SETATTR3res *res;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -2242,14 +3844,13 @@ static void nfs_utimes_cb(struct rpc_context *rpc _U_, int status, void *command
        free_nfs_cb_data(data);
 }
 
-static int nfs_utimes_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_utimes_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        SETATTR3args args;
        struct timeval *utimes_data = data->continue_data;
 
-       bzero(&args, sizeof(SETATTR3args));
-       args.object.data.data_len = data->fh.data.data_len;
-       args.object.data.data_val = data->fh.data.data_val;
+       memset(&args, 0, sizeof(SETATTR3args));
+       args.object = data->fh;
        if (utimes_data != NULL) {
                args.new_attributes.atime.set_it = SET_TO_CLIENT_TIME;
                args.new_attributes.atime.set_atime_u.atime.seconds  = utimes_data[0].tv_sec;
@@ -2262,7 +3863,7 @@ static int nfs_utimes_continue_internal(struct nfs_context *nfs, struct nfs_cb_d
                args.new_attributes.mtime.set_it = SET_TO_SERVER_TIME;
        }
 
-       if (rpc_nfs_setattr_async(nfs->rpc, nfs_utimes_cb, &args, data) != 0) {
+       if (rpc_nfs3_setattr_async(nfs->rpc, nfs_utimes_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -2323,19 +3924,18 @@ int nfs_utime_async(struct nfs_context *nfs, const char *path, struct utimbuf *t
 }
 
 
-
-
-
 /*
  * Async access()
  */
-static void nfs_access_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_access_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        ACCESS3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        unsigned int nfsmode = 0;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -2382,9 +3982,10 @@ static void nfs_access_cb(struct rpc_context *rpc _U_, int status, void *command
        free_nfs_cb_data(data);
 }
 
-static int nfs_access_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_access_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        int nfsmode = 0;
+       ACCESS3args args;
 
        if (data->continue_int & R_OK) {
                nfsmode |= ACCESS3_READ;
@@ -2396,7 +3997,11 @@ static int nfs_access_continue_internal(struct nfs_context *nfs, struct nfs_cb_d
                nfsmode |= ACCESS3_EXECUTE;
        }
 
-       if (rpc_nfs_access_async(nfs->rpc, nfs_access_cb, &data->fh, nfsmode, data) != 0) {
+       memset(&args, 0, sizeof(ACCESS3args));
+       args.object = data->fh;
+       args.access = nfsmode;
+
+       if (rpc_nfs3_access_async(nfs->rpc, nfs_access_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -2442,13 +4047,15 @@ static void free_nfs_symlink_data(void *mem)
        free(data);
 }
 
-static void nfs_symlink_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_symlink_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        SYMLINK3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        struct nfs_symlink_data *symlink_data = data->continue_data;
-       
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -2472,11 +4079,19 @@ static void nfs_symlink_cb(struct rpc_context *rpc _U_, int status, void *comman
        free_nfs_cb_data(data);
 }
 
-static int nfs_symlink_continue_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_symlink_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        struct nfs_symlink_data *symlink_data = data->continue_data;
+       SYMLINK3args args;
+
+       memset(&args, 0, sizeof(SYMLINK3args));
+       args.where.dir = data->fh;
+       args.where.name = symlink_data->newpathobject;
+       args.symlink.symlink_attributes.mode.set_it = 1;
+       args.symlink.symlink_attributes.mode.set_mode3_u.mode = S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH;
+       args.symlink.symlink_data = symlink_data->oldpath;
 
-       if (rpc_nfs_symlink_async(nfs->rpc, nfs_symlink_cb, &data->fh, symlink_data->newpathobject, symlink_data->oldpath, data) != 0) {
+       if (rpc_nfs3_symlink_async(nfs->rpc, nfs_symlink_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send SYMLINK call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -2495,7 +4110,7 @@ int nfs_symlink_async(struct nfs_context *nfs, const char *oldpath, const char *
                rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for symlink data");
                return -1;
        }
-       bzero(symlink_data, sizeof(struct nfs_symlink_data));
+       memset(symlink_data, 0, sizeof(struct nfs_symlink_data));
 
        symlink_data->oldpath = strdup(oldpath);
        if (symlink_data->oldpath == NULL) {
@@ -2511,7 +4126,7 @@ int nfs_symlink_async(struct nfs_context *nfs, const char *oldpath, const char *
                return -1;
        }
 
-       ptr = rindex(symlink_data->newpathparent, '/');
+       ptr = strrchr(symlink_data->newpathparent, '/');
        if (ptr == NULL) {
                rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
                free_nfs_symlink_data(symlink_data);
@@ -2568,13 +4183,15 @@ static void free_nfs_rename_data(void *mem)
        free(data);
 }
 
-static void nfs_rename_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_rename_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        RENAME3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        struct nfs_rename_data *rename_data = data->continue_data;
-       
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -2598,16 +4215,20 @@ static void nfs_rename_cb(struct rpc_context *rpc _U_, int status, void *command
        free_nfs_cb_data(data);
 }
 
-static int nfs_rename_continue_2_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_rename_continue_2_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        struct nfs_rename_data *rename_data = data->continue_data;
+       RENAME3args args;
 
        /* steal the filehandle */
-       rename_data->newdir.data.data_len = data->fh.data.data_len;
-       rename_data->newdir.data.data_val = data->fh.data.data_val;
+       rename_data->newdir = data->fh;
        data->fh.data.data_val = NULL;
 
-       if (rpc_nfs_rename_async(nfs->rpc, nfs_rename_cb, &rename_data->olddir, rename_data->oldobject, &rename_data->newdir, rename_data->newobject, data) != 0) {
+       args.from.dir = rename_data->olddir;
+       args.from.name = rename_data->oldobject;
+       args.to.dir = rename_data->newdir;
+       args.to.name = rename_data->newobject;
+       if (rpc_nfs3_rename_async(nfs->rpc, nfs_rename_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send RENAME call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -2617,23 +4238,31 @@ static int nfs_rename_continue_2_internal(struct nfs_context *nfs, struct nfs_cb
 }
 
 
-static int nfs_rename_continue_1_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_rename_continue_1_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        struct nfs_rename_data *rename_data = data->continue_data;
+       char* newpath = strdup(rename_data->newpath);
+       if (!newpath) {
+               rpc_set_error(nfs->rpc, "Out of memory. Could not allocate memory to store target path for rename");
+               data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+               free_nfs_cb_data(data);
+               return -1;
+       }
 
        /* steal the filehandle */
-       rename_data->olddir.data.data_len = data->fh.data.data_len;
-       rename_data->olddir.data.data_val = data->fh.data.data_val;
+       rename_data->olddir = data->fh;
        data->fh.data.data_val = NULL;
 
        if (nfs_lookuppath_async(nfs, rename_data->newpath, data->cb, data->private_data, nfs_rename_continue_2_internal, rename_data, free_nfs_rename_data, 0) != 0) {
-               rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", rename_data->newpath);
+               rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", newpath);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
+               free(newpath);
                return -1;
        }
        data->continue_data = NULL;
        free_nfs_cb_data(data);
+       free(newpath);
 
        return 0;
 }
@@ -2649,7 +4278,7 @@ int nfs_rename_async(struct nfs_context *nfs, const char *oldpath, const char *n
                rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for rename data");
                return -1;
        }
-       bzero(rename_data, sizeof(struct nfs_rename_data));
+       memset(rename_data, 0, sizeof(struct nfs_rename_data));
 
        rename_data->oldpath = strdup(oldpath);
        if (rename_data->oldpath == NULL) {
@@ -2657,7 +4286,7 @@ int nfs_rename_async(struct nfs_context *nfs, const char *oldpath, const char *n
                free_nfs_rename_data(rename_data);
                return -1;
        }
-       ptr = rindex(rename_data->oldpath, '/');
+       ptr = strrchr(rename_data->oldpath, '/');
        if (ptr == NULL) {
                rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
                free_nfs_rename_data(rename_data);
@@ -2674,7 +4303,7 @@ int nfs_rename_async(struct nfs_context *nfs, const char *oldpath, const char *n
                free_nfs_rename_data(rename_data);
                return -1;
        }
-       ptr = rindex(rename_data->newpath, '/');
+       ptr = strrchr(rename_data->newpath, '/');
        if (ptr == NULL) {
                rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
                free_nfs_rename_data(rename_data);
@@ -2724,13 +4353,15 @@ static void free_nfs_link_data(void *mem)
        free(data);
 }
 
-static void nfs_link_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+static void nfs_link_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
 {
        LINK3res *res;
        struct nfs_cb_data *data = private_data;
        struct nfs_context *nfs = data->nfs;
        struct nfs_link_data *link_data = data->continue_data;
-       
+
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        if (status == RPC_STATUS_ERROR) {
                data->cb(-EFAULT, nfs, command_data, data->private_data);
                free_nfs_cb_data(data);
@@ -2754,16 +4385,20 @@ static void nfs_link_cb(struct rpc_context *rpc _U_, int status, void *command_d
        free_nfs_cb_data(data);
 }
 
-static int nfs_link_continue_2_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_link_continue_2_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        struct nfs_link_data *link_data = data->continue_data;
+       LINK3args args;
 
        /* steal the filehandle */
-       link_data->newdir.data.data_len = data->fh.data.data_len;
-       link_data->newdir.data.data_val = data->fh.data.data_val;
+       link_data->newdir = data->fh;
        data->fh.data.data_val = NULL;
 
-       if (rpc_nfs_link_async(nfs->rpc, nfs_link_cb, &link_data->oldfh, &link_data->newdir, link_data->newobject, data) != 0) {
+       memset(&args, 0, sizeof(LINK3args));
+       args.file = link_data->oldfh;
+       args.link.dir = link_data->newdir;
+       args.link.name = link_data->newobject;
+       if (rpc_nfs3_link_async(nfs->rpc, nfs_link_cb, &args, data) != 0) {
                rpc_set_error(nfs->rpc, "RPC error: Failed to send LINK call for %s", data->path);
                data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
                free_nfs_cb_data(data);
@@ -2773,13 +4408,12 @@ static int nfs_link_continue_2_internal(struct nfs_context *nfs, struct nfs_cb_d
 }
 
 
-static int nfs_link_continue_1_internal(struct nfs_context *nfs, struct nfs_cb_data *data)
+static int nfs_link_continue_1_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
 {
        struct nfs_link_data *link_data = data->continue_data;
 
        /* steal the filehandle */
-       link_data->oldfh.data.data_len = data->fh.data.data_len;
-       link_data->oldfh.data.data_val = data->fh.data.data_val;
+       link_data->oldfh = data->fh;
        data->fh.data.data_val = NULL;
 
        if (nfs_lookuppath_async(nfs, link_data->newpath, data->cb, data->private_data, nfs_link_continue_2_internal, link_data, free_nfs_link_data, 0) != 0) {
@@ -2805,7 +4439,7 @@ int nfs_link_async(struct nfs_context *nfs, const char *oldpath, const char *new
                rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for link data");
                return -1;
        }
-       bzero(link_data, sizeof(struct nfs_link_data));
+       memset(link_data, 0, sizeof(struct nfs_link_data));
 
        link_data->oldpath = strdup(oldpath);
        if (link_data->oldpath == NULL) {
@@ -2820,7 +4454,7 @@ int nfs_link_async(struct nfs_context *nfs, const char *oldpath, const char *new
                free_nfs_link_data(link_data);
                return -1;
        }
-       ptr = rindex(link_data->newpath, '/');
+       ptr = strrchr(link_data->newpath, '/');
        if (ptr == NULL) {
                rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
                free_nfs_link_data(link_data);
@@ -2841,7 +4475,7 @@ int nfs_link_async(struct nfs_context *nfs, const char *oldpath, const char *new
 
 
 //qqq replace later with lseek()
-off_t nfs_get_current_offset(struct nfsfh *nfsfh)
+uint64_t nfs_get_current_offset(struct nfsfh *nfsfh)
 {
        return nfsfh->offset;
 }
@@ -2851,7 +4485,7 @@ off_t nfs_get_current_offset(struct nfsfh *nfsfh)
 /*
  * Get the maximum supported READ3 size by the server
  */
-size_t nfs_get_readmax(struct nfs_context *nfs)
+uint64_t nfs_get_readmax(struct nfs_context *nfs)
 {
        return nfs->readmax;
 }
@@ -2859,23 +4493,40 @@ size_t nfs_get_readmax(struct nfs_context *nfs)
 /*
  * Get the maximum supported WRITE3 size by the server
  */
-size_t nfs_get_writemax(struct nfs_context *nfs)
+uint64_t nfs_get_writemax(struct nfs_context *nfs)
 {
        return nfs->writemax;
 }
 
+void nfs_set_tcp_syncnt(struct nfs_context *nfs, int v) {
+       rpc_set_tcp_syncnt(nfs->rpc, v);
+}
+
+void nfs_set_uid(struct nfs_context *nfs, int uid) {
+       rpc_set_uid(nfs->rpc, uid);
+}
+
+void nfs_set_gid(struct nfs_context *nfs, int gid) {
+       rpc_set_gid(nfs->rpc, gid);
+}
+
+void nfs_set_readahead(struct nfs_context *nfs, uint32_t v) {
+       rpc_set_readahead(nfs->rpc, v);
+}
+
 void nfs_set_error(struct nfs_context *nfs, char *error_string, ...)
 {
         va_list ap;
        char *str = NULL;
 
         va_start(ap, error_string);
-       vasprintf(&str, error_string, ap);
+       str = malloc(1024);
+       vsnprintf(str, 1024, error_string, ap);
        if (nfs->rpc->error_string != NULL) {
                free(nfs->rpc->error_string);
        }
        nfs->rpc->error_string = str;
-        va_end(ap);
+       va_end(ap);
 }
 
 
@@ -2900,7 +4551,9 @@ static void mount_export_5_cb(struct rpc_context *rpc, int status, void *command
 {
        struct mount_cb_data *data = private_data;
 
-       if (status == RPC_STATUS_ERROR) {       
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       if (status == RPC_STATUS_ERROR) {
                data->cb(rpc, -EFAULT, command_data, data->private_data);
                free_mount_cb_data(data);
                return;
@@ -2922,81 +4575,10 @@ static void mount_export_4_cb(struct rpc_context *rpc, int status, void *command
 {
        struct mount_cb_data *data = private_data;
 
-       if (status == RPC_STATUS_ERROR) {       
-               data->cb(rpc, -EFAULT, command_data, data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-       if (status == RPC_STATUS_CANCEL) {
-               data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-
-       if (rpc_mount_export_async(rpc, mount_export_5_cb, data) != 0) {
-               data->cb(rpc, -ENOMEM, command_data, data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-}
-
-static void mount_export_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
-{
-       struct mount_cb_data *data = private_data;
-       uint32_t mount_port;
-
-       if (status == RPC_STATUS_ERROR) {       
-               data->cb(rpc, -EFAULT, command_data, data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-       if (status == RPC_STATUS_CANCEL) {
-               data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-
-       mount_port = *(uint32_t *)command_data;
-       if (mount_port == 0) {
-               rpc_set_error(rpc, "RPC error. Mount program is not available");
-               data->cb(rpc, -ENOENT, command_data, data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-
-       rpc_disconnect(rpc, "normal disconnect");
-       if (rpc_connect_async(rpc, data->server, mount_port, mount_export_4_cb, data) != 0) {
-               data->cb(rpc, -ENOMEM, command_data, data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-}
-
-static void mount_export_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
-{
-       struct mount_cb_data *data = private_data;
-
-       if (status == RPC_STATUS_ERROR) {
-               data->cb(rpc, -EFAULT, command_data, data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-       if (status == RPC_STATUS_CANCEL) {
-               data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-
-       if (rpc_pmap_getport_async(rpc, MOUNT_PROGRAM, MOUNT_V3, mount_export_3_cb, private_data) != 0) {
-               data->cb(rpc, -ENOMEM, command_data, data->private_data);
-               free_mount_cb_data(data);
-               return;
-       }
-}
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
-static void mount_export_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
-{
-       struct mount_cb_data *data = private_data;
+       /* Dont want any more callbacks even if the socket is closed */
+       rpc->connect_cb = NULL;
 
        if (status == RPC_STATUS_ERROR) {
                data->cb(rpc, -EFAULT, command_data, data->private_data);
@@ -3009,7 +4591,7 @@ static void mount_export_1_cb(struct rpc_context *rpc, int status, void *command
                return;
        }
 
-       if (rpc_pmap_null_async(rpc, mount_export_2_cb, data) != 0) {
+       if (rpc_mount3_export_async(rpc, mount_export_5_cb, data) != 0) {
                data->cb(rpc, -ENOMEM, command_data, data->private_data);
                free_mount_cb_data(data);
                return;
@@ -3020,19 +4602,22 @@ int mount_getexports_async(struct rpc_context *rpc, const char *server, rpc_cb c
 {
        struct mount_cb_data *data;
 
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
        data = malloc(sizeof(struct mount_cb_data));
        if (data == NULL) {
                return -1;
        }
-       bzero(data, sizeof(struct mount_cb_data));
+       memset(data, 0, sizeof(struct mount_cb_data));
        data->cb           = cb;
        data->private_data = private_data;
        data->server       = strdup(server);
        if (data->server == NULL) {
                free_mount_cb_data(data);
                return -1;
-       }       
-       if (rpc_connect_async(rpc, data->server, 111, mount_export_1_cb, data) != 0) {
+       }
+       if (rpc_connect_program_async(rpc, data->server, MOUNT_PROGRAM, MOUNT_V3, mount_export_4_cb, data) != 0) {
+               rpc_set_error(rpc, "Failed to start connection");
                free_mount_cb_data(data);
                return -1;
        }
@@ -3042,6 +4627,22 @@ int mount_getexports_async(struct rpc_context *rpc, const char *server, rpc_cb c
 
 struct rpc_context *nfs_get_rpc_context(struct nfs_context *nfs)
 {
+       assert(nfs->rpc->magic == RPC_CONTEXT_MAGIC);
        return nfs->rpc;
 }
 
+const char *nfs_get_server(struct nfs_context *nfs) {
+       return nfs->server;
+}
+
+const char *nfs_get_export(struct nfs_context *nfs) {
+       return nfs->export;
+}
+
+const struct nfs_fh3 *nfs_get_rootfh(struct nfs_context *nfs) {
+      return &nfs->rootfh;
+}
+
+struct nfs_fh3 *nfs_get_fh(struct nfsfh *nfsfh) {
+       return &nfsfh->fh;
+}