examples/nfsclient-sync.c

   1 /*
   2    Copyright (C) by Ronnie Sahlberg <ronniesahlberg@gmail.com> 2010
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18 /* Example program using the highlevel sync interface
  19  */
  20
  21 #define SERVER "10.1.1.27"
  22 #define EXPORT "/VIRTUAL"
  23 #define NFSFILE "/BOOKS/Classics/Dracula.djvu"
  24 #define NFSFILER "/BOOKS/Classics/Dracula.djvu.renamed"
  25 #define NFSFILEW "/BOOKS/Classics/foo"
  26 #define NFSDIR "/BOOKS/Classics/"
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <stdint.h>
  31 #include <sys/types.h>
  32 #include <sys/stat.h>
  33 #include <sys/statvfs.h>
  34 #include <unistd.h>
  35 #include <fcntl.h>
  36 #include "libnfs.h"
  37 #include <rpc/rpc.h>            /* for authunix_create() */
  38 #include "libnfs-raw.h"
  39 #include "libnfs-raw-mount.h"
  40
  41 struct client {
  42        char *server;
  43        char *export;
  44        uint32_t mount_port;
  45        int is_finished;
  46 };
  47
  48
  49 int main(int argc _U_, char *argv[] _U_)
  50 {
  51         struct nfs_context *nfs;
  52         int i, ret;
  53         struct client client;
  54         struct stat st;
  55         struct nfsfh  *nfsfh;
  56         struct nfsdir *nfsdir;
  57         struct nfsdirent *nfsdirent;
  58         client.server = SERVER;
  59         client.export = EXPORT;
  60         client.is_finished = 0;
  61         char buf[16];
  62         off_t offset;
  63         struct statvfs svfs;
  64         exports export, tmp;
  65
  66         printf("exports on server %s\n", SERVER);
  67         export = mount_getexports(SERVER);
  68         tmp = export;
  69         while (tmp != NULL) {
  70               printf("Export: %s\n", tmp->ex_dir);
  71               tmp = tmp->ex_next;
  72         }
  73         mount_free_export_list(export);
  74
  75
  76         nfs = nfs_init_context();
  77         if (nfs == NULL) {
  78                 printf("failed to init context\n");
  79                 exit(10);
  80         }
  81
  82         ret = nfs_mount(nfs, client.server, client.export);
  83         if (ret != 0) {
  84                 printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
  85                 exit(10);
  86         }
  87         printf("mounted share successfully\n");
  88
  89
  90         ret = nfs_stat(nfs, NFSFILE, &st);
  91         if (ret != 0) {
  92                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
  93                 exit(10);
  94         }
  95         printf("Mode %04o\n", st.st_mode);
  96         printf("Size %d\n", (int)st.st_size);
  97         printf("Inode %04o\n", (int)st.st_ino);
  98
  99         ret = nfs_open(nfs, NFSFILE, O_RDONLY, &nfsfh);
 100         if (ret != 0) {
 101                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 102                 exit(10);
 103         }
 104
 105         ret = nfs_read(nfs, nfsfh, 16, buf);
 106         if (ret < 0) {
 107                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 108                 exit(10);
 109         }
 110         printf("read %d bytes\n", ret);
 111         for (i=0;i<16;i++) {
 112                 printf("%02x ", buf[i]&0xff);
 113         }
 114         printf("\n");
 115         ret = nfs_read(nfs, nfsfh, 16, buf);
 116         if (ret < 0) {
 117                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 118                 exit(10);
 119         }
 120         printf("read %d bytes\n", ret);
 121         for (i=0;i<16;i++) {
 122                 printf("%02x ", buf[i]&0xff);
 123         }
 124         printf("\n");
 125
 126         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_CUR, &offset);
 127         if (ret < 0) {
 128                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 129                 exit(10);
 130         }
 131         printf("File position is %d\n", (int)offset);
 132
 133         printf("seek to end of file\n");
 134         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_END, &offset);
 135         if (ret < 0) {
 136                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 137                 exit(10);
 138         }
 139         printf("File position is %d\n", (int)offset);
 140
 141         ret = nfs_fstat(nfs, nfsfh, &st);
 142         if (ret != 0) {
 143                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 144                 exit(10);
 145         }
 146         printf("Mode %04o\n", st.st_mode);
 147         printf("Size %d\n", (int)st.st_size);
 148         printf("Inode %04o\n", (int)st.st_ino);
 149
 150
 151         ret = nfs_close(nfs, nfsfh);
 152         if (ret < 0) {
 153                 printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 154                 exit(10);
 155         }
 156
 157         ret = nfs_opendir(nfs, NFSDIR, &nfsdir);
 158         if (ret != 0) {
 159                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 160                 exit(10);
 161         }
 162         while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
 163                 printf("Inode:%d Name:%s\n", (int)nfsdirent->inode, nfsdirent->name);
 164         }
 165         nfs_closedir(nfs, nfsdir);
 166
 167
 168         ret = nfs_open(nfs, NFSFILEW, O_WRONLY, &nfsfh);
 169         if (ret != 0) {
 170                 printf("Failed to open(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 171                 exit(10);
 172         }
 173         ret = nfs_pwrite(nfs, nfsfh, 0, 16, buf);
 174         if (ret < 0) {
 175                 printf("Failed to pwrite(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 176                 exit(10);
 177         }
 178         ret = nfs_fsync(nfs, nfsfh);
 179         if (ret < 0) {
 180                 printf("Failed to fsync(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 181                 exit(10);
 182         }
 183         ret = nfs_close(nfs, nfsfh);
 184         if (ret < 0) {
 185                 printf("Failed to close(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 186                 exit(10);
 187         }
 188
 189
 190         ret = nfs_statvfs(nfs, NFSDIR, &svfs);
 191         if (ret < 0) {
 192                 printf("Failed to statvfs(%s) %s\n", NFSDIR, nfs_get_error(nfs));
 193                 exit(10);
 194         }
 195         printf("files %d/%d/%d\n", (int)svfs.f_files, (int)svfs.f_ffree, (int)svfs.f_favail);
 196
 197
 198         ret = nfs_access(nfs, NFSFILE, R_OK);
 199         if (ret != 0) {
 200                 printf("Failed to access(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 201         }
 202
 203         /* become root */
 204         nfs_set_auth(nfs, authunix_create("Ronnies-Laptop", 0, 0, 0, NULL));
 205
 206         ret = nfs_link(nfs, NFSFILE, NFSFILER);
 207         if (ret != 0) {
 208                 printf("Failed to link(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 209         }
 210
 211
 212         nfs_destroy_context(nfs);
 213         printf("nfsclient finished\n");
 214         return 0;
 215 }
 216