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.truncated"
  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 char buf[5*1024*1024];
  50
  51 int main(int argc _U_, char *argv[] _U_)
  52 {
  53         struct nfs_context *nfs;
  54         int i, ret;
  55         struct client client;
  56         struct stat st;
  57         struct nfsfh  *nfsfh;
  58         struct nfsdir *nfsdir;
  59         struct nfsdirent *nfsdirent;
  60         client.server = SERVER;
  61         client.export = EXPORT;
  62         client.is_finished = 0;
  63         off_t offset;
  64         struct statvfs svfs;
  65         exports export, tmp;
  66
  67         printf("exports on server %s\n", SERVER);
  68         export = mount_getexports(SERVER);
  69         tmp = export;
  70         while (tmp != NULL) {
  71               printf("Export: %s\n", tmp->ex_dir);
  72               tmp = tmp->ex_next;
  73         }
  74         mount_free_export_list(export);
  75
  76
  77         nfs = nfs_init_context();
  78         if (nfs == NULL) {
  79                 printf("failed to init context\n");
  80                 exit(10);
  81         }
  82
  83         ret = nfs_mount(nfs, client.server, client.export);
  84         if (ret != 0) {
  85                 printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
  86                 exit(10);
  87         }
  88         printf("mounted share successfully %s\n", nfs_get_error(nfs));
  89
  90
  91         ret = nfs_stat(nfs, NFSFILE, &st);
  92         if (ret != 0) {
  93                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
  94                 exit(10);
  95         }
  96         printf("Mode %04o\n", st.st_mode);
  97         printf("Size %d\n", (int)st.st_size);
  98         printf("Inode %04o\n", (int)st.st_ino);
  99
 100         ret = nfs_open(nfs, NFSFILE, O_RDONLY, &nfsfh);
 101         if (ret != 0) {
 102                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 103                 exit(10);
 104         }
 105
 106 #if 0
 107         ret = nfs_read(nfs, nfsfh, 16, buf);
 108         if (ret < 0) {
 109                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 110                 exit(10);
 111         }
 112         printf("read %d bytes\n", ret);
 113         for (i=0;i<16;i++) {
 114                 printf("%02x ", buf[i]&0xff);
 115         }
 116         printf("\n");
 117 #endif
 118         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 119         if (ret < 0) {
 120                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 121                 exit(10);
 122         }
 123         printf("read %d bytes\n", ret);
 124         for (i=0;i<16;i++) {
 125                 printf("%02x ", buf[i]&0xff);
 126         }
 127         printf("\n");
 128
 129         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_CUR, &offset);
 130         if (ret < 0) {
 131                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 132                 exit(10);
 133         }
 134         printf("File position is %d\n", (int)offset);
 135
 136         printf("seek to end of file\n");
 137         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_END, &offset);
 138         if (ret < 0) {
 139                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 140                 exit(10);
 141         }
 142         printf("File position is %d\n", (int)offset);
 143
 144         ret = nfs_fstat(nfs, nfsfh, &st);
 145         if (ret != 0) {
 146                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 147                 exit(10);
 148         }
 149         printf("Mode %04o\n", st.st_mode);
 150         printf("Size %d\n", (int)st.st_size);
 151         printf("Inode %04o\n", (int)st.st_ino);
 152
 153
 154         ret = nfs_close(nfs, nfsfh);
 155         if (ret < 0) {
 156                 printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 157                 exit(10);
 158         }
 159
 160         ret = nfs_opendir(nfs, NFSDIR, &nfsdir);
 161         if (ret != 0) {
 162                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 163                 exit(10);
 164         }
 165         while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
 166                 printf("Inode:%d Name:%s\n", (int)nfsdirent->inode, nfsdirent->name);
 167         }
 168         nfs_closedir(nfs, nfsdir);
 169
 170
 171         ret = nfs_open(nfs, NFSFILEW, O_WRONLY, &nfsfh);
 172         if (ret != 0) {
 173                 printf("Failed to open(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 174                 exit(10);
 175         }
 176         ret = nfs_pwrite(nfs, nfsfh, 0, 16, buf);
 177         if (ret < 0) {
 178                 printf("Failed to pwrite(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 179                 exit(10);
 180         }
 181         ret = nfs_fsync(nfs, nfsfh);
 182         if (ret < 0) {
 183                 printf("Failed to fsync(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 184                 exit(10);
 185         }
 186         ret = nfs_close(nfs, nfsfh);
 187         if (ret < 0) {
 188                 printf("Failed to close(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 189                 exit(10);
 190         }
 191
 192
 193         ret = nfs_statvfs(nfs, NFSDIR, &svfs);
 194         if (ret < 0) {
 195                 printf("Failed to statvfs(%s) %s\n", NFSDIR, nfs_get_error(nfs));
 196                 exit(10);
 197         }
 198         printf("files %d/%d/%d\n", (int)svfs.f_files, (int)svfs.f_ffree, (int)svfs.f_favail);
 199
 200
 201         ret = nfs_access(nfs, NFSFILE, R_OK);
 202         if (ret != 0) {
 203                 printf("Failed to access(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 204         }
 205
 206         /* become root */
 207         nfs_set_auth(nfs, authunix_create("Ronnies-Laptop", 0, 0, 0, NULL));
 208
 209         ret = nfs_link(nfs, NFSFILE, NFSFILER);
 210         if (ret != 0) {
 211                 printf("Failed to link(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 212         }
 213
 214
 215         nfs_destroy_context(nfs);
 216         printf("nfsclient finished\n");
 217         return 0;
 218 }
 219