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 #ifdef WIN32
  21 #include "win32_compat.h"
  22 #else
  23 #include <fcntl.h>
  24 #include <sys/stat.h>
  25 #include <sys/statvfs.h>
  26 #endif
  27
  28 #define SERVER "10.1.1.27"
  29 #define EXPORT "/VIRTUAL"
  30 #define NFSFILE "/BOOKS/Classics/Dracula.djvu.truncated"
  31 #define NFSFILER "/BOOKS/Classics/Dracula.djvu.renamed"
  32 #define NFSFILEW "/BOOKS/Classics/foo"
  33 #define NFSDIR "/BOOKS/Classics/"
  34
  35 #define _GNU_SOURCE
  36
  37 #if defined(WIN32)
  38 #pragma comment(lib, "ws2_32.lib")
  39 WSADATA wsaData;
  40 #else
  41 #include <sys/statvfs.h>
  42 #include <unistd.h>
  43 #endif
  44
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <stdint.h>
  48 #include <sys/types.h>
  49 #include <sys/stat.h>
  50 #include <fcntl.h>
  51 #include "libnfs.h"
  52 #include <rpc/rpc.h>            /* for authunix_create() */
  53 #include "libnfs-raw.h"
  54 #include "libnfs-raw-mount.h"
  55
  56 struct client {
  57        char *server;
  58        char *export;
  59        uint32_t mount_port;
  60        int is_finished;
  61 };
  62
  63
  64 void PrintServerList()
  65 {
  66   struct nfs_server_list *srvrs;
  67   struct nfs_server_list *srv;
  68
  69   srvrs = nfs_find_local_servers();
  70
  71   for (srv=srvrs; srv; srv = srv->next)
  72   {
  73       printf("Found nfs server: %s\n", srv->addr);
  74
  75   }
  76   free_nfs_srvr_list(srvrs);
  77 }
  78
  79 char buf[3*1024*1024+337];
  80
  81 int main(int argc _U_, char *argv[] _U_)
  82 {
  83         struct nfs_context *nfs;
  84         int i, ret;
  85         uint64_t offset;
  86         struct client client;
  87         struct stat st;
  88         struct nfsfh  *nfsfh;
  89         struct nfsdir *nfsdir;
  90         struct nfsdirent *nfsdirent;
  91         struct statvfs svfs;
  92         exports export, tmp;
  93
  94 #if defined(WIN32)
  95         if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
  96                 printf("Failed to start Winsock2\n");
  97                 exit(10);
  98         }
  99 #endif
 100
 101         client.server = SERVER;
 102         client.export = EXPORT;
 103         client.is_finished = 0;
 104
 105   PrintServerList();
 106
 107         export = mount_getexports(SERVER);
 108         if (export != NULL) {
 109                 printf("exports on server %s\n", SERVER);
 110                 tmp = export;
 111                 while (tmp != NULL) {
 112                       printf("Export: %s\n", tmp->ex_dir);
 113                       tmp = tmp->ex_next;
 114                 }
 115
 116                 mount_free_export_list(export);
 117         } else {
 118                 printf("no exports on server %s\n", SERVER);
 119         }
 120
 121         nfs = nfs_init_context();
 122         if (nfs == NULL) {
 123                 printf("failed to init context\n");
 124                 exit(10);
 125         }
 126
 127         ret = nfs_mount(nfs, client.server, client.export);
 128         if (ret != 0) {
 129                 printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
 130                 exit(10);
 131         }
 132         printf("mounted share successfully %s\n", nfs_get_error(nfs));
 133
 134
 135         ret = nfs_stat(nfs, NFSFILE, &st);
 136         if (ret != 0) {
 137                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 138                 exit(10);
 139         }
 140         printf("Mode %04o\n", st.st_mode);
 141         printf("Size %d\n", (int)st.st_size);
 142         printf("Inode %04o\n", (int)st.st_ino);
 143
 144         ret = nfs_open(nfs, NFSFILE, O_RDONLY, &nfsfh);
 145         if (ret != 0) {
 146                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 147                 exit(10);
 148         }
 149
 150 #if 0
 151         ret = nfs_read(nfs, nfsfh, 16, 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         for (i=0;i<16;i++) {
 158                 printf("%02x ", buf[i]&0xff);
 159         }
 160         printf("\n");
 161 #endif
 162         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 163         if (ret < 0) {
 164                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 165                 exit(10);
 166         }
 167         printf("read %d bytes\n", ret);
 168         for (i=0;i<16;i++) {
 169                 printf("%02x ", buf[i]&0xff);
 170         }
 171         printf("\n");
 172         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 173         if (ret < 0) {
 174                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 175                 exit(10);
 176         }
 177         printf("read %d bytes\n", ret);
 178         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 179         if (ret < 0) {
 180                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 181                 exit(10);
 182         }
 183         printf("read %d bytes\n", ret);
 184         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 185         if (ret < 0) {
 186                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 187                 exit(10);
 188         }
 189         printf("read %d bytes\n", ret);
 190         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 191         if (ret < 0) {
 192                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 193                 exit(10);
 194         }
 195         printf("read %d bytes\n", ret);
 196         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 197         if (ret < 0) {
 198                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 199                 exit(10);
 200         }
 201         printf("read %d bytes\n", ret);
 202
 203         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_CUR, &offset);
 204         if (ret < 0) {
 205                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 206                 exit(10);
 207         }
 208         printf("File position is %d\n", (int)offset);
 209
 210         printf("seek to end of file\n");
 211         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_END, &offset);
 212         if (ret < 0) {
 213                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 214                 exit(10);
 215         }
 216         printf("File position is %d\n", (int)offset);
 217
 218         ret = nfs_fstat(nfs, nfsfh, &st);
 219         if (ret != 0) {
 220                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 221                 exit(10);
 222         }
 223         printf("Mode %04o\n", st.st_mode);
 224         printf("Size %d\n", (int)st.st_size);
 225         printf("Inode %04o\n", (int)st.st_ino);
 226
 227
 228         ret = nfs_close(nfs, nfsfh);
 229         if (ret < 0) {
 230                 printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 231                 exit(10);
 232         }
 233
 234         ret = nfs_opendir(nfs, NFSDIR, &nfsdir);
 235         if (ret != 0) {
 236                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 237                 exit(10);
 238         }
 239         while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
 240           char filename[1024];
 241                 printf("Inode:%d Name:%s ", (int)nfsdirent->inode, nfsdirent->name);
 242                 sprintf(filename, "%s/%s", NFSDIR, nfsdirent->name);
 243                 ret = nfs_open(nfs, filename, O_RDONLY, &nfsfh);
 244                 if (ret != 0) {
 245                         printf("Failed to open(%s) %s\n", filename, nfs_get_error(nfs));
 246                         exit(10);
 247                 }
 248                 ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 249                 if (ret < 0) {
 250                         printf("Error reading file\n");
 251                 }
 252                 printf("Read %d bytes\n", ret);
 253                 ret = nfs_close(nfs, nfsfh);
 254                 if (ret < 0) {
 255                         printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 256                         exit(10);
 257                 }
 258         }
 259         nfs_closedir(nfs, nfsdir);
 260
 261
 262         ret = nfs_open(nfs, NFSFILEW, O_WRONLY, &nfsfh);
 263         if (ret != 0) {
 264                 printf("Failed to open(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 265                 exit(10);
 266         }
 267         ret = nfs_pwrite(nfs, nfsfh, 0, 16, buf);
 268         if (ret < 0) {
 269                 printf("Failed to pwrite(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 270                 exit(10);
 271         }
 272         ret = nfs_fsync(nfs, nfsfh);
 273         if (ret < 0) {
 274                 printf("Failed to fsync(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 275                 exit(10);
 276         }
 277         ret = nfs_close(nfs, nfsfh);
 278         if (ret < 0) {
 279                 printf("Failed to close(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 280                 exit(10);
 281         }
 282
 283
 284         ret = nfs_statvfs(nfs, NFSDIR, &svfs);
 285         if (ret < 0) {
 286                 printf("Failed to statvfs(%s) %s\n", NFSDIR, nfs_get_error(nfs));
 287                 exit(10);
 288         }
 289         printf("files %d/%d/%d\n", (int)svfs.f_files, (int)svfs.f_ffree, (int)svfs.f_favail);
 290
 291
 292         ret = nfs_access(nfs, NFSFILE, R_OK);
 293         if (ret != 0) {
 294                 printf("Failed to access(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 295         }
 296
 297         /* become root */
 298         nfs_set_auth(nfs, authunix_create("Ronnies-Laptop", 0, 0, 0, NULL));
 299
 300         ret = nfs_link(nfs, NFSFILE, NFSFILER);
 301         if (ret != 0) {
 302                 printf("Failed to link(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 303         }
 304
 305
 306         nfs_destroy_context(nfs);
 307         printf("nfsclient finished\n");
 308         return 0;
 309 }
 310