* High level api to nfs filesystems
*/
+#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
+#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <poll.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <netdb.h>
#include "libnfs.h"
#include "libnfs-raw.h"
#include "libnfs-raw-mount.h"
};
-static void wait_for_reply(struct nfs_context *nfs, struct sync_cb_data *cb_data)
+static void wait_for_reply(struct rpc_context *rpc, struct sync_cb_data *cb_data)
{
struct pollfd pfd;
if (cb_data->is_finished) {
break;
}
- pfd.fd = nfs_get_fd(nfs);
- pfd.events = nfs_which_events(nfs);
+ pfd.fd = rpc_get_fd(rpc);
+ pfd.events = rpc_which_events(rpc);
if (poll(&pfd, 1, -1) < 0) {
- nfs_set_error(nfs, "Poll failed");
+ rpc_set_error(rpc, "Poll failed");
cb_data->status = -EIO;
break;
}
- if (nfs_service(nfs, pfd.revents) < 0) {
- nfs_set_error(nfs, "nfs_service failed");
+ if (rpc_service(rpc, pfd.revents) < 0) {
+ rpc_set_error(rpc, "rpc_service failed");
cb_data->status = -EIO;
break;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
return -1;
}
- wait_for_reply(nfs, &cb_data);
+ wait_for_reply(nfs_get_rpc_context(nfs), &cb_data);
return cb_data.status;
}
+
+void mount_getexports_cb(struct rpc_context *mount_context, int status, void *data, void *private_data)
+{
+ struct sync_cb_data *cb_data = private_data;
+ exports export = *(exports *)data;
+
+ cb_data->is_finished = 1;
+ cb_data->status = status;
+ cb_data->return_data = NULL;
+
+ if (status != 0) {
+ rpc_set_error(mount_context, "mount/export call failed with \"%s\"", (char *)data);
+ return;
+ }
+
+ while (export != NULL) {
+ exports new_export;
+
+ new_export = malloc(sizeof(*new_export));
+ memset(new_export, 0, sizeof(*new_export));
+ new_export->ex_dir = strdup(export->ex_dir);
+ new_export->ex_next = cb_data->return_data;
+
+ cb_data->return_data = new_export;
+
+ export = export->ex_next;
+ }
+}
+
+struct exportnode *mount_getexports(const char *server)
+{
+ struct sync_cb_data cb_data;
+ struct rpc_context *rpc;
+
+
+ cb_data.is_finished = 0;
+ cb_data.return_data = NULL;
+
+ rpc = rpc_init_context();
+ if (mount_getexports_async(rpc, server, mount_getexports_cb, &cb_data) != 0) {
+ rpc_destroy_context(rpc);
+ return NULL;
+ }
+
+ wait_for_reply(rpc, &cb_data);
+ rpc_destroy_context(rpc);
+
+ return cb_data.return_data;
+}
+
+void mount_free_export_list(struct exportnode *exports)
+{
+ struct exportnode *tmp;
+
+ while ((tmp = exports)) {
+ exports = exports->ex_next;
+ free(tmp->ex_dir);
+ free(tmp);
+ }
+}
+
+
+
+
+void free_nfs_srvr_list(struct nfs_server_list *srv)
+{
+ while (srv != NULL) {
+ struct nfs_server_list *next = srv->next;
+
+ free(srv->addr);
+ free(srv);
+ srv = next;
+ }
+}
+
+struct nfs_list_data {
+ int status;
+ struct nfs_server_list *srvrs;
+};
+
+void callit_cb(struct rpc_context *rpc, int status, void *data _U_, void *private_data)
+{
+ struct nfs_list_data *srv_data = private_data;
+ struct sockaddr *sin;
+ char hostdd[16];
+ struct nfs_server_list *srvr;
+
+ if (status == RPC_STATUS_CANCEL) {
+ return;
+ }
+ if (status != 0) {
+ srv_data->status = -1;
+ return;
+ }
+
+ sin = rpc_get_recv_sockaddr(rpc);
+ if (sin == NULL) {
+ rpc_set_error(rpc, "failed to get sockaddr in CALLIT callback");
+ srv_data->status = -1;
+ return;
+ }
+
+ if (getnameinfo(sin, sizeof(struct sockaddr_in), &hostdd[0], sizeof(hostdd), NULL, 0, NI_NUMERICHOST) < 0) {
+ rpc_set_error(rpc, "getnameinfo failed in CALLIT callback");
+ srv_data->status = -1;
+ return;
+ }
+
+ /* check for dupes */
+ for (srvr = srv_data->srvrs; srvr; srvr = srvr->next) {
+ if (!strcmp(hostdd, srvr->addr)) {
+ return 0;
+ }
+ }
+
+ srvr = malloc(sizeof(struct nfs_server_list));
+ if (srvr == NULL) {
+ rpc_set_error(rpc, "Malloc failed when allocating server structure");
+ srv_data->status = -1;
+ return;
+ }
+
+ srvr->addr = strdup(hostdd);
+ if (srvr->addr == NULL) {
+ rpc_set_error(rpc, "Strdup failed when allocating server structure");
+ free(srvr);
+ srv_data->status = -1;
+ return;
+ }
+
+ srvr->next = srv_data->srvrs;
+ srv_data->srvrs = srvr;
+}
+
+static int send_nfsd_probes(struct rpc_context *rpc, struct ifconf *ifc, struct nfs_list_data *data)
+{
+ char *ptr;
+
+ for (ptr =(char *)(ifc->ifc_buf); ptr < (char *)(ifc->ifc_buf) + ifc->ifc_len; ) {
+ struct ifreq *ifr;
+ char bcdd[16];
+
+ ifr = (struct ifreq *)ptr;
+#ifdef HAVE_SOCKADDR_LEN
+ if (ifr->ifr_addr.sa_len > sizeof(struct sockaddr)) {
+ ptr += sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len;
+ } else {
+ ptr += sizeof(ifr->ifr_name) + sizeof(struct sockaddr);
+ }
+#else
+ ptr += sizeof(struct ifreq);
+#endif
+
+ if (ifr->ifr_addr.sa_family != AF_INET) {
+ continue;
+ }
+ if (ioctl(rpc_get_fd(rpc), SIOCGIFFLAGS, ifr) < 0) {
+ return -1;
+ }
+ if (!(ifr->ifr_flags & IFF_UP)) {
+ continue;
+ }
+ if (ifr->ifr_flags & IFF_LOOPBACK) {
+ continue;
+ }
+ if (!(ifr->ifr_flags & IFF_BROADCAST)) {
+ continue;
+ }
+ if (ioctl(rpc_get_fd(rpc), SIOCGIFBRDADDR, ifr) < 0) {
+ continue;
+ }
+ if (getnameinfo(&ifr->ifr_broadaddr, sizeof(struct sockaddr_in), &bcdd[0], sizeof(bcdd), NULL, 0, NI_NUMERICHOST) < 0) {
+ continue;
+ }
+ if (rpc_set_udp_destination(rpc, bcdd, 111, 1) < 0) {
+ return -1;
+ }
+
+ if (rpc_pmap_callit_async(rpc, MOUNT_PROGRAM, 2, 0, NULL, 0, callit_cb, data) < 0) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+struct nfs_server_list *nfs_find_local_servers(void)
+{
+ struct rpc_context *rpc;
+ struct nfs_list_data data = {0, NULL};
+ struct timeval tv_start, tv_current;
+ struct ifconf ifc;
+ int size, loop;
+ struct pollfd pfd;
+
+ rpc = rpc_init_udp_context();
+ if (rpc == NULL) {
+ return NULL;
+ }
+
+ if (rpc_bind_udp(rpc, "0.0.0.0", 0) < 0) {
+ rpc_destroy_context(rpc);
+ return NULL;
+ }
+
+
+ /* get list of all interfaces */
+ size = sizeof(struct ifreq);
+ ifc.ifc_buf = NULL;
+ ifc.ifc_len = size;
+
+ while(ifc.ifc_len > (size - sizeof(struct ifreq))) {
+ size *= 2;
+
+ free(ifc.ifc_buf);
+ ifc.ifc_len = size;
+ ifc.ifc_buf = malloc(size);
+ memset(ifc.ifc_buf, 0, size);
+ if (ioctl(rpc_get_fd(rpc), SIOCGIFCONF, (caddr_t)&ifc) < 0) {
+ rpc_destroy_context(rpc);
+ free(ifc.ifc_buf);
+ return NULL;
+ }
+ }
+
+ for (loop=0; loop<3; loop++) {
+ if (send_nfsd_probes(rpc, &ifc, &data) != 0) {
+ rpc_destroy_context(rpc);
+ free(ifc.ifc_buf);
+ return NULL;
+ }
+
+ gettimeofday(&tv_start, NULL);
+ for(;;) {
+ int mpt;
+
+ pfd.fd = rpc_get_fd(rpc);
+ pfd.events = rpc_which_events(rpc);
+
+ gettimeofday(&tv_current, NULL);
+ mpt = 1000
+ - (tv_current.tv_sec *1000 + tv_current.tv_usec / 1000)
+ + (tv_start.tv_sec *1000 + tv_start.tv_usec / 1000);
+
+ if (poll(&pfd, 1, mpt) < 0) {
+ free_nfs_srvr_list(data.srvrs);
+ rpc_destroy_context(rpc);
+ return NULL;
+ }
+ if (pfd.revents == 0) {
+ break;
+ }
+
+ if (rpc_service(rpc, pfd.revents) < 0) {
+ break;
+ }
+ }
+ }
+
+ free(ifc.ifc_buf);
+ rpc_destroy_context(rpc);
+
+ if (data.status != 0) {
+ free_nfs_srvr_list(data.srvrs);
+ return NULL;
+ }
+
+ return data.srvrs;
+}
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