/*
* High level api to nfs filesystems
*/
-
-#define _GNU_SOURCE
-
-#if defined(WIN32)
-#include <winsock2.h>
+#ifdef WIN32
+#include "win32_compat.h"
#define DllExport
-#define O_SYNC 0
-typedef int uid_t;
-typedef int gid_t;
#else
#include <strings.h>
#include <sys/statvfs.h>
#include <utime.h>
#include <unistd.h>
-#endif
+#endif/*WIN32*/
+
+#define _GNU_SOURCE
#include <stdio.h>
#include <stdarg.h>
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);
st.st_gid = res->GETATTR3res_u.resok.obj_attributes.gid;
st.st_rdev = 0;
st.st_size = res->GETATTR3res_u.resok.obj_attributes.size;
-#if !defined(WIN32)
+#ifndef WIN32
st.st_blksize = 4096;
st.st_blocks = res->GETATTR3res_u.resok.obj_attributes.size / 4096;
-#endif
+#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;
free_nfs_cb_data(data);
}
+static void nfs_pwrite_mcb(struct rpc_context *rpc _U_, 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;
+ WRITE3res *res;
+
+ 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: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+ data->error = 1;
+ } else {
+ if (res->WRITE3res_u.resok.count > 0) {
+ if ((unsigned)data->max_offset < mdata->offset + res->WRITE3res_u.resok.count) {
+ data->max_offset = mdata->offset + res->WRITE3res_u.resok.count;
+ }
+ }
+ }
+ }
+
+ if (data->num_calls > 0) {
+ /* still waiting for more replies */
+ free(mdata);
+ 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, NULL, data->private_data);
+
+ free_nfs_cb_data(data);
+ free(mdata);
+}
+
+
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->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);
- data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
- free_nfs_cb_data(data);
- return -1;
+
+ if (count <= nfs_get_writemax(nfs)) {
+ 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);
+ data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+ free_nfs_cb_data(data);
+ return -1;
+ }
+ return 0;
+ }
+
+ /* trying to write more than maximum server write size, we has to chop it up into smaller
+ * chunks.
+ * we send all writes in parallell so that performance is still good.
+ */
+ data->max_offset = offset;
+ data->start_offset = offset;
+
+ while (count > 0) {
+ size_t writecount = count;
+ struct nfs_mcb_data *mdata;
+
+ 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;
+ }
+ memset(mdata, 0, sizeof(struct nfs_mcb_data));
+ mdata->data = data;
+ mdata->offset = offset;
+ mdata->count = writecount;
+
+ if (rpc_nfs_write_async(nfs->rpc, nfs_pwrite_mcb, &nfsfh->fh, &buf[offset - data->start_offset], offset, writecount, nfsfh->is_sync?FILE_SYNC:UNSTABLE, mdata) != 0) {
+ rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
+ data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+ free(mdata);
+ return -1;
+ }
+
+ count -= writecount;
+ offset += writecount;
+ data->num_calls++;
}
+
return 0;
}
-
-
/*
* Async opendir()
*/
-static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+
+/* 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 _U_, int status, void *command_data, void *private_data)
{
- READDIRPLUS3res *res;
+ 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;
+
+ free(rdpe_lookup_cb_data);
+
+ rdpe_cb_data->getattrcount--;
+
+ if (status == RPC_STATUS_ERROR) {
+ rdpe_cb_data->status = RPC_STATUS_ERROR;
+ }
+ if (status == RPC_STATUS_CANCEL) {
+ rdpe_cb_data->status = RPC_STATUS_CANCEL;
+ }
+ if (status == RPC_STATUS_SUCCESS && res->status != NFS3_OK) {
+ rdpe_cb_data->status = RPC_STATUS_ERROR;
+ }
+ 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;
+ }
+ }
+
+ if (rdpe_cb_data->getattrcount == 0) {
+ if (rdpe_cb_data->status != RPC_STATUS_SUCCESS) {
+ 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 _U_, 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 entryplus3 *entry;
+ struct nfsdirent *nfsdirent;
+ struct entry3 *entry;
uint64_t cookie;
-
+ struct rdpe_cb_data *rdpe_cb_data;
+
if (status == RPC_STATUS_ERROR) {
data->cb(-EFAULT, nfs, command_data, data->private_data);
nfs_free_nfsdir(nfsdir);
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);
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));
data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
return;
}
+ 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);
+ nfs_free_nfsdir(nfsdir);
+ data->continue_data = NULL;
+ free_nfs_cb_data(data);
+ return;
+ }
+ nfsdirent->inode = entry->fileid;
+
+ nfsdirent->next = nfsdir->entries;
+ nfsdir->entries = nfsdirent;
+
+ cookie = entry->cookie;
+ entry = entry->nextentry;
+ }
+
+ if (res->READDIR3res_u.resok.reply.eof == 0) {
+ if (rpc_nfs_readdir_async(nfs->rpc, nfs_opendir2_cb, &data->fh, cookie, res->READDIR3res_u.resok.cookieverf, 8192, 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;
+ }
+
+ /* steal the dirhandle */
+ nfsdir->current = 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;
+
+ 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;
+
+ if (rpc_nfs_lookup_async(nfs->rpc, nfs_opendir3_cb, &data->fh, nfsdirent->name, 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) {
+ 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++;
+ }
+}
+
+
+static void nfs_opendir_cb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+{
+ READDIRPLUS3res *res = command_data;
+ struct nfs_cb_data *data = private_data;
+ struct nfs_context *nfs = data->nfs;
+ struct nfsdir *nfsdir = data->continue_data;
+ struct entryplus3 *entry;
+ uint64_t cookie;
+
+
+ if (status == RPC_STATUS_ERROR || (status == RPC_STATUS_SUCCESS && res->status == NFS3ERR_NOTSUPP) ){
+ cookieverf3 cv;
+
+ if (rpc_nfs_readdir_async(nfs->rpc, nfs_opendir2_cb, &data->fh, 0, (char *)&cv, 8192, 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);
+ data->continue_data = NULL;
+ free_nfs_cb_data(data);
+ return;
+ }
+
+ if (res->status != NFS3_OK) {
+ 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;
+ free_nfs_cb_data(data);
+ return;
+ }
+
entry =res->READDIRPLUS3res_u.resok.reply.entries;
while (entry != NULL) {
struct nfsdirent *nfsdirent;
*/
size_t nfs_get_writemax(struct nfs_context *nfs)
{
- return nfs->writemax;
+ /* Some XDR libraries can not marshall PDUs bigger than this */
+ if (nfs->writemax < 32768) {
+ return nfs->writemax;
+ }
+ return 32768;
}
void nfs_set_error(struct nfs_context *nfs, char *error_string, ...)
free(nfs->rpc->error_string);
}
nfs->rpc->error_string = str;
- va_end(ap);
+ va_end(ap);
}
return nfs->export;
}
-
-#if defined(WIN32)
-int poll(struct pollfd *fds, int nfsd, int timeout)
-{
- fd_set rfds, wfds, efds;
- int ret;
-
- FD_ZERO(&rfds);
- FD_ZERO(&wfds);
- FD_ZERO(&efds);
- if (fds->events & POLLIN) {
- FD_SET(fds->fd, &rfds);
- }
- if (fds->events & POLLOUT) {
- FD_SET(fds->fd, &wfds);
- }
- FD_SET(fds->fd, &efds);
- select(fds->fd + 1, &rfds, &wfds, &efds, NULL);
- fds->revents = 0;
- if (FD_ISSET(fds->fd, &rfds)) {
- fds->revents |= POLLIN;
- }
- if (FD_ISSET(fds->fd, &wfds)) {
- fds->revents |= POLLOUT;
- }
- if (FD_ISSET(fds->fd, &efds)) {
- fds->revents |= POLLHUP;
- }
- return 1;
-}
-#endif
-
repositories / deb_libnfs.git / blobdiff