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 #define _GNU_SOURCE
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <stdint.h>
  32 #include <sys/types.h>
  33 #include <sys/stat.h>
  34 #include <sys/statvfs.h>
  35 #include <unistd.h>
  36 #include <fcntl.h>
  37 #include "libnfs.h"
  38 #include <rpc/rpc.h>            /* for authunix_create() */
  39 #include "libnfs-raw.h"
  40 #include "libnfs-raw-mount.h"
  41
  42 struct client {
  43        char *server;
  44        char *export;
  45        uint32_t mount_port;
  46        int is_finished;
  47 };
  48
  49
  50 char buf[3*1024*1024+337];
  51
  52 int main(int argc _U_, char *argv[] _U_)
  53 {
  54         struct nfs_context *nfs;
  55         int i, ret;
  56         struct client client;
  57         struct stat st;
  58         struct nfsfh  *nfsfh;
  59         struct nfsdir *nfsdir;
  60         struct nfsdirent *nfsdirent;
  61         client.server = SERVER;
  62         client.export = EXPORT;
  63         client.is_finished = 0;
  64         off_t offset;
  65         struct statvfs svfs;
  66         exports export, tmp;
  67
  68         export = mount_getexports(SERVER);
  69         if (export != NULL) {
  70                 printf("exports on server %s\n", SERVER);
  71                 tmp = export;
  72                 while (tmp != NULL) {
  73                       printf("Export: %s\n", tmp->ex_dir);
  74                       tmp = tmp->ex_next;
  75                 }
  76
  77                 mount_free_export_list(export);
  78         } else {
  79                 printf("no exports on server %s\n", SERVER);
  80         }
  81
  82         nfs = nfs_init_context();
  83         if (nfs == NULL) {
  84                 printf("failed to init context\n");
  85                 exit(10);
  86         }
  87
  88         ret = nfs_mount(nfs, client.server, client.export);
  89         if (ret != 0) {
  90                 printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
  91                 exit(10);
  92         }
  93         printf("mounted share successfully %s\n", nfs_get_error(nfs));
  94
  95
  96         ret = nfs_stat(nfs, NFSFILE, &st);
  97         if (ret != 0) {
  98                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
  99                 exit(10);
 100         }
 101         printf("Mode %04o\n", st.st_mode);
 102         printf("Size %d\n", (int)st.st_size);
 103         printf("Inode %04o\n", (int)st.st_ino);
 104
 105         ret = nfs_open(nfs, NFSFILE, O_RDONLY, &nfsfh);
 106         if (ret != 0) {
 107                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 108                 exit(10);
 109         }
 110
 111 #if 0
 112         ret = nfs_read(nfs, nfsfh, 16, buf);
 113         if (ret < 0) {
 114                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 115                 exit(10);
 116         }
 117         printf("read %d bytes\n", ret);
 118         for (i=0;i<16;i++) {
 119                 printf("%02x ", buf[i]&0xff);
 120         }
 121         printf("\n");
 122 #endif
 123         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 124         if (ret < 0) {
 125                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 126                 exit(10);
 127         }
 128         printf("read %d bytes\n", ret);
 129         for (i=0;i<16;i++) {
 130                 printf("%02x ", buf[i]&0xff);
 131         }
 132         printf("\n");
 133         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 134         if (ret < 0) {
 135                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 136                 exit(10);
 137         }
 138         printf("read %d bytes\n", ret);
 139         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 140         if (ret < 0) {
 141                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 142                 exit(10);
 143         }
 144         printf("read %d bytes\n", ret);
 145         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 146         if (ret < 0) {
 147                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 148                 exit(10);
 149         }
 150         printf("read %d bytes\n", ret);
 151         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 152         if (ret < 0) {
 153                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 154                 exit(10);
 155         }
 156         printf("read %d bytes\n", ret);
 157         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 158         if (ret < 0) {
 159                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 160                 exit(10);
 161         }
 162         printf("read %d bytes\n", ret);
 163
 164         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_CUR, &offset);
 165         if (ret < 0) {
 166                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 167                 exit(10);
 168         }
 169         printf("File position is %d\n", (int)offset);
 170
 171         printf("seek to end of file\n");
 172         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_END, &offset);
 173         if (ret < 0) {
 174                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 175                 exit(10);
 176         }
 177         printf("File position is %d\n", (int)offset);
 178
 179         ret = nfs_fstat(nfs, nfsfh, &st);
 180         if (ret != 0) {
 181                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 182                 exit(10);
 183         }
 184         printf("Mode %04o\n", st.st_mode);
 185         printf("Size %d\n", (int)st.st_size);
 186         printf("Inode %04o\n", (int)st.st_ino);
 187
 188
 189         ret = nfs_close(nfs, nfsfh);
 190         if (ret < 0) {
 191                 printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 192                 exit(10);
 193         }
 194
 195         ret = nfs_opendir(nfs, NFSDIR, &nfsdir);
 196         if (ret != 0) {
 197                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 198                 exit(10);
 199         }
 200         while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
 201                 char *filename = NULL;
 202                 printf("Inode:%d Name:%s ", (int)nfsdirent->inode, nfsdirent->name);
 203                 asprintf(&filename, "%s/%s", NFSDIR, nfsdirent->name);
 204                 ret = nfs_open(nfs, filename, O_RDONLY, &nfsfh);
 205                 free(filename);
 206                 if (ret != 0) {
 207                         printf("Failed to open(%s) %s\n", filename, nfs_get_error(nfs));
 208                         exit(10);
 209                 }
 210                 ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 211                 if (ret < 0) {
 212                         printf("Error reading file\n");
 213                         exit(10);
 214                 }
 215                 printf("Read %d bytes\n", ret);
 216                 ret = nfs_close(nfs, nfsfh);
 217                 if (ret < 0) {
 218                         printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 219                         exit(10);
 220                 }
 221         }
 222         nfs_closedir(nfs, nfsdir);
 223
 224
 225         ret = nfs_open(nfs, NFSFILEW, O_WRONLY, &nfsfh);
 226         if (ret != 0) {
 227                 printf("Failed to open(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 228                 exit(10);
 229         }
 230         ret = nfs_pwrite(nfs, nfsfh, 0, 16, buf);
 231         if (ret < 0) {
 232                 printf("Failed to pwrite(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 233                 exit(10);
 234         }
 235         ret = nfs_fsync(nfs, nfsfh);
 236         if (ret < 0) {
 237                 printf("Failed to fsync(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 238                 exit(10);
 239         }
 240         ret = nfs_close(nfs, nfsfh);
 241         if (ret < 0) {
 242                 printf("Failed to close(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 243                 exit(10);
 244         }
 245
 246
 247         ret = nfs_statvfs(nfs, NFSDIR, &svfs);
 248         if (ret < 0) {
 249                 printf("Failed to statvfs(%s) %s\n", NFSDIR, nfs_get_error(nfs));
 250                 exit(10);
 251         }
 252         printf("files %d/%d/%d\n", (int)svfs.f_files, (int)svfs.f_ffree, (int)svfs.f_favail);
 253
 254
 255         ret = nfs_access(nfs, NFSFILE, R_OK);
 256         if (ret != 0) {
 257                 printf("Failed to access(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 258         }
 259
 260         /* become root */
 261         nfs_set_auth(nfs, authunix_create("Ronnies-Laptop", 0, 0, 0, NULL));
 262
 263         ret = nfs_link(nfs, NFSFILE, NFSFILER);
 264         if (ret != 0) {
 265                 printf("Failed to link(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 266         }
 267
 268
 269         nfs_destroy_context(nfs);
 270         printf("nfsclient finished\n");
 271         return 0;
 272 }
 273