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
  30 #if defined(WIN32)
  31 #include <winsock2.h>
  32 typedef int off_t;
  33 #pragma comment(lib, "ws2_32.lib")
  34 WSADATA wsaData;
  35 #else
  36 #include <sys/statvfs.h>
  37 #include <unistd.h>
  38 #endif
  39
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <stdint.h>
  43 #include <sys/types.h>
  44 #include <sys/stat.h>
  45 #include <fcntl.h>
  46 #include "libnfs.h"
  47 #include <rpc/rpc.h>            /* for authunix_create() */
  48 #include "libnfs-raw.h"
  49 #include "libnfs-raw-mount.h"
  50
  51 struct client {
  52        char *server;
  53        char *export;
  54        uint32_t mount_port;
  55        int is_finished;
  56 };
  57
  58
  59 char buf[3*1024*1024+337];
  60
  61 int main(int argc _U_, char *argv[] _U_)
  62 {
  63         struct nfs_context *nfs;
  64         int i, ret;
  65         off_t offset;
  66         struct client client;
  67         struct stat st;
  68         struct nfsfh  *nfsfh;
  69         struct nfsdir *nfsdir;
  70         struct nfsdirent *nfsdirent;
  71         struct statvfs svfs;
  72         exports export, tmp;
  73
  74 #if defined(WIN32)
  75         if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
  76                 printf("Failed to start Winsock2\n");
  77                 exit(10);
  78         }
  79 #endif
  80
  81         client.server = SERVER;
  82         client.export = EXPORT;
  83         client.is_finished = 0;
  84         export = mount_getexports(SERVER);
  85         if (export != NULL) {
  86                 printf("exports on server %s\n", SERVER);
  87                 tmp = export;
  88                 while (tmp != NULL) {
  89                       printf("Export: %s\n", tmp->ex_dir);
  90                       tmp = tmp->ex_next;
  91                 }
  92
  93                 mount_free_export_list(export);
  94         } else {
  95                 printf("no exports on server %s\n", SERVER);
  96         }
  97
  98         nfs = nfs_init_context();
  99         if (nfs == NULL) {
 100                 printf("failed to init context\n");
 101                 exit(10);
 102         }
 103
 104         ret = nfs_mount(nfs, client.server, client.export);
 105         if (ret != 0) {
 106                 printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
 107                 exit(10);
 108         }
 109         printf("mounted share successfully %s\n", nfs_get_error(nfs));
 110
 111
 112         ret = nfs_stat(nfs, NFSFILE, &st);
 113         if (ret != 0) {
 114                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 115                 exit(10);
 116         }
 117         printf("Mode %04o\n", st.st_mode);
 118         printf("Size %d\n", (int)st.st_size);
 119         printf("Inode %04o\n", (int)st.st_ino);
 120
 121         ret = nfs_open(nfs, NFSFILE, O_RDONLY, &nfsfh);
 122         if (ret != 0) {
 123                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 124                 exit(10);
 125         }
 126
 127 #if 0
 128         ret = nfs_read(nfs, nfsfh, 16, buf);
 129         if (ret < 0) {
 130                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 131                 exit(10);
 132         }
 133         printf("read %d bytes\n", ret);
 134         for (i=0;i<16;i++) {
 135                 printf("%02x ", buf[i]&0xff);
 136         }
 137         printf("\n");
 138 #endif
 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         for (i=0;i<16;i++) {
 146                 printf("%02x ", buf[i]&0xff);
 147         }
 148         printf("\n");
 149         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 150         if (ret < 0) {
 151                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 152                 exit(10);
 153         }
 154         printf("read %d bytes\n", ret);
 155         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 156         if (ret < 0) {
 157                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 158                 exit(10);
 159         }
 160         printf("read %d bytes\n", ret);
 161         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 162         if (ret < 0) {
 163                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 164                 exit(10);
 165         }
 166         printf("read %d bytes\n", ret);
 167         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 168         if (ret < 0) {
 169                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 170                 exit(10);
 171         }
 172         printf("read %d bytes\n", ret);
 173         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 174         if (ret < 0) {
 175                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 176                 exit(10);
 177         }
 178         printf("read %d bytes\n", ret);
 179
 180         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_CUR, &offset);
 181         if (ret < 0) {
 182                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 183                 exit(10);
 184         }
 185         printf("File position is %d\n", (int)offset);
 186
 187         printf("seek to end of file\n");
 188         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_END, &offset);
 189         if (ret < 0) {
 190                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 191                 exit(10);
 192         }
 193         printf("File position is %d\n", (int)offset);
 194
 195         ret = nfs_fstat(nfs, nfsfh, &st);
 196         if (ret != 0) {
 197                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 198                 exit(10);
 199         }
 200         printf("Mode %04o\n", st.st_mode);
 201         printf("Size %d\n", (int)st.st_size);
 202         printf("Inode %04o\n", (int)st.st_ino);
 203
 204
 205         ret = nfs_close(nfs, nfsfh);
 206         if (ret < 0) {
 207                 printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 208                 exit(10);
 209         }
 210
 211         ret = nfs_opendir(nfs, NFSDIR, &nfsdir);
 212         if (ret != 0) {
 213                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 214                 exit(10);
 215         }
 216         while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
 217           char filename[1024];
 218                 printf("Inode:%d Name:%s ", (int)nfsdirent->inode, nfsdirent->name);
 219                 sprintf(&filename, "%s/%s", NFSDIR, nfsdirent->name);
 220                 ret = nfs_open(nfs, filename, O_RDONLY, &nfsfh);
 221                 if (ret != 0) {
 222                         printf("Failed to open(%s) %s\n", filename, nfs_get_error(nfs));
 223                         exit(10);
 224                 }
 225                 ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 226                 if (ret < 0) {
 227                         printf("Error reading file\n");
 228                         exit(10);
 229                 }
 230                 printf("Read %d bytes\n", ret);
 231                 ret = nfs_close(nfs, nfsfh);
 232                 if (ret < 0) {
 233                         printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 234                         exit(10);
 235                 }
 236         }
 237         nfs_closedir(nfs, nfsdir);
 238
 239
 240         ret = nfs_open(nfs, NFSFILEW, O_WRONLY, &nfsfh);
 241         if (ret != 0) {
 242                 printf("Failed to open(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 243                 exit(10);
 244         }
 245         ret = nfs_pwrite(nfs, nfsfh, 0, 16, buf);
 246         if (ret < 0) {
 247                 printf("Failed to pwrite(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 248                 exit(10);
 249         }
 250         ret = nfs_fsync(nfs, nfsfh);
 251         if (ret < 0) {
 252                 printf("Failed to fsync(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 253                 exit(10);
 254         }
 255         ret = nfs_close(nfs, nfsfh);
 256         if (ret < 0) {
 257                 printf("Failed to close(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 258                 exit(10);
 259         }
 260
 261
 262         ret = nfs_statvfs(nfs, NFSDIR, &svfs);
 263         if (ret < 0) {
 264                 printf("Failed to statvfs(%s) %s\n", NFSDIR, nfs_get_error(nfs));
 265                 exit(10);
 266         }
 267         printf("files %d/%d/%d\n", (int)svfs.f_files, (int)svfs.f_ffree, (int)svfs.f_favail);
 268
 269
 270         ret = nfs_access(nfs, NFSFILE, R_OK);
 271         if (ret != 0) {
 272                 printf("Failed to access(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 273         }
 274
 275         /* become root */
 276         nfs_set_auth(nfs, authunix_create("Ronnies-Laptop", 0, 0, 0, NULL));
 277
 278         ret = nfs_link(nfs, NFSFILE, NFSFILER);
 279         if (ret != 0) {
 280                 printf("Failed to link(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 281         }
 282
 283
 284         nfs_destroy_context(nfs);
 285         printf("nfsclient finished\n");
 286         return 0;
 287 }
 288