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
  39 struct client {
  40        char *server;
  41        char *export;
  42        uint32_t mount_port;
  43        int is_finished;
  44 };
  45
  46
  47 int main(int argc, char *argv[])
  48 {
  49         struct nfs_context *nfs;
  50         int i, ret;
  51         struct client client;
  52         struct stat st;
  53         struct nfsfh  *nfsfh;
  54         struct nfsdir *nfsdir;
  55         struct nfsdirent *nfsdirent;
  56         client.server = SERVER;
  57         client.export = EXPORT;
  58         client.is_finished = 0;
  59         char buf[16];
  60         off_t offset;
  61         struct statvfs svfs;
  62
  63         nfs = nfs_init_context();
  64         if (nfs == NULL) {
  65                 printf("failed to init context\n");
  66                 exit(10);
  67         }
  68
  69         ret = nfs_mount_sync(nfs, client.server, client.export);
  70         if (ret != 0) {
  71                 printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
  72                 exit(10);
  73         }
  74         printf("mounted share successfully\n");
  75
  76
  77         ret = nfs_stat_sync(nfs, NFSFILE, &st);
  78         if (ret != 0) {
  79                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
  80                 exit(10);
  81         }
  82         printf("Mode %04o\n", st.st_mode);
  83         printf("Size %d\n", (int)st.st_size);
  84         printf("Inode %04o\n", (int)st.st_ino);
  85
  86         ret = nfs_open_sync(nfs, NFSFILE, O_RDONLY, &nfsfh);
  87         if (ret != 0) {
  88                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
  89                 exit(10);
  90         }
  91
  92         ret = nfs_read_sync(nfs, nfsfh, 16, buf);
  93         if (ret < 0) {
  94                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
  95                 exit(10);
  96         }
  97         printf("read %d bytes\n", ret);
  98         for (i=0;i<16;i++) {
  99                 printf("%02x ", buf[i]&0xff);
 100         }
 101         printf("\n");
 102         ret = nfs_read_sync(nfs, nfsfh, 16, buf);
 103         if (ret < 0) {
 104                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 105                 exit(10);
 106         }
 107         printf("read %d bytes\n", ret);
 108         for (i=0;i<16;i++) {
 109                 printf("%02x ", buf[i]&0xff);
 110         }
 111         printf("\n");
 112
 113         ret = (int)nfs_lseek_sync(nfs, nfsfh, 0, SEEK_CUR, &offset);
 114         if (ret < 0) {
 115                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 116                 exit(10);
 117         }
 118         printf("File position is %d\n", (int)offset);
 119
 120         printf("seek to end of file\n");
 121         ret = (int)nfs_lseek_sync(nfs, nfsfh, 0, SEEK_END, &offset);
 122         if (ret < 0) {
 123                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 124                 exit(10);
 125         }
 126         printf("File position is %d\n", (int)offset);
 127
 128         ret = nfs_fstat_sync(nfs, nfsfh, &st);
 129         if (ret != 0) {
 130                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 131                 exit(10);
 132         }
 133         printf("Mode %04o\n", st.st_mode);
 134         printf("Size %d\n", (int)st.st_size);
 135         printf("Inode %04o\n", (int)st.st_ino);
 136
 137
 138         ret = nfs_close_sync(nfs, nfsfh);
 139         if (ret < 0) {
 140                 printf("Failed to close(%s)\n", NFSFILE, nfs_get_error(nfs));
 141                 exit(10);
 142         }
 143
 144         ret = nfs_opendir_sync(nfs, NFSDIR, &nfsdir);
 145         if (ret != 0) {
 146                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 147                 exit(10);
 148         }
 149         while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
 150                 printf("Inode:%d Name:%s\n", (int)nfsdirent->inode, nfsdirent->name);
 151         }
 152         nfs_closedir(nfs, nfsdir);
 153
 154
 155         ret = nfs_open_sync(nfs, NFSFILEW, O_WRONLY, &nfsfh);
 156         if (ret != 0) {
 157                 printf("Failed to open(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 158                 exit(10);
 159         }
 160         ret = nfs_pwrite_sync(nfs, nfsfh, 0, 16, buf);
 161         if (ret < 0) {
 162                 printf("Failed to pwrite(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 163                 exit(10);
 164         }
 165         ret = nfs_fsync_sync(nfs, nfsfh);
 166         if (ret < 0) {
 167                 printf("Failed to fsync(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 168                 exit(10);
 169         }
 170         ret = nfs_close_sync(nfs, nfsfh);
 171         if (ret < 0) {
 172                 printf("Failed to close(%s)\n", NFSFILEW, nfs_get_error(nfs));
 173                 exit(10);
 174         }
 175
 176
 177         ret = nfs_statvfs_sync(nfs, NFSDIR, &svfs);
 178         if (ret < 0) {
 179                 printf("Failed to statvfs(%s)\n", NFSDIR, nfs_get_error(nfs));
 180                 exit(10);
 181         }
 182         printf("files %d/%d/%d\n", (int)svfs.f_files, (int)svfs.f_ffree, (int)svfs.f_favail);
 183
 184
 185         ret = nfs_access_sync(nfs, NFSFILE, R_OK);
 186         if (ret != 0) {
 187                 printf("Failed to access(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 188         }
 189
 190         /* become root */
 191         nfs_set_auth(nfs, authunix_create("Ronnies-Laptop", 0, 0, 0, NULL));
 192
 193         ret = nfs_link_sync(nfs, NFSFILE, NFSFILER);
 194         if (ret != 0) {
 195                 printf("Failed to link(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 196         }
 197
 198
 199         nfs_destroy_context(nfs);
 200         printf("nfsclient finished\n");
 201         return 0;
 202 }