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 char buf[3*1024*1024+337];
  65
  66 int main(int argc _U_, char *argv[] _U_)
  67 {
  68         struct nfs_context *nfs;
  69         int i, ret;
  70         off_t offset;
  71         struct client client;
  72         struct stat st;
  73         struct nfsfh  *nfsfh;
  74         struct nfsdir *nfsdir;
  75         struct nfsdirent *nfsdirent;
  76         struct statvfs svfs;
  77         exports export, tmp;
  78
  79 #if defined(WIN32)
  80         if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
  81                 printf("Failed to start Winsock2\n");
  82                 exit(10);
  83         }
  84 #endif
  85
  86         client.server = SERVER;
  87         client.export = EXPORT;
  88         client.is_finished = 0;
  89         export = mount_getexports(SERVER);
  90         if (export != NULL) {
  91                 printf("exports on server %s\n", SERVER);
  92                 tmp = export;
  93                 while (tmp != NULL) {
  94                       printf("Export: %s\n", tmp->ex_dir);
  95                       tmp = tmp->ex_next;
  96                 }
  97
  98                 mount_free_export_list(export);
  99         } else {
 100                 printf("no exports on server %s\n", SERVER);
 101         }
 102
 103         nfs = nfs_init_context();
 104         if (nfs == NULL) {
 105                 printf("failed to init context\n");
 106                 exit(10);
 107         }
 108
 109         ret = nfs_mount(nfs, client.server, client.export);
 110         if (ret != 0) {
 111                 printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
 112                 exit(10);
 113         }
 114         printf("mounted share successfully %s\n", nfs_get_error(nfs));
 115
 116
 117         ret = nfs_stat(nfs, NFSFILE, &st);
 118         if (ret != 0) {
 119                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 120                 exit(10);
 121         }
 122         printf("Mode %04o\n", st.st_mode);
 123         printf("Size %d\n", (int)st.st_size);
 124         printf("Inode %04o\n", (int)st.st_ino);
 125
 126         ret = nfs_open(nfs, NFSFILE, O_RDONLY, &nfsfh);
 127         if (ret != 0) {
 128                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 129                 exit(10);
 130         }
 131
 132 #if 0
 133         ret = nfs_read(nfs, nfsfh, 16, 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         for (i=0;i<16;i++) {
 140                 printf("%02x ", buf[i]&0xff);
 141         }
 142         printf("\n");
 143 #endif
 144         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 145         if (ret < 0) {
 146                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 147                 exit(10);
 148         }
 149         printf("read %d bytes\n", ret);
 150         for (i=0;i<16;i++) {
 151                 printf("%02x ", buf[i]&0xff);
 152         }
 153         printf("\n");
 154         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 155         if (ret < 0) {
 156                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 157                 exit(10);
 158         }
 159         printf("read %d bytes\n", ret);
 160         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 161         if (ret < 0) {
 162                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 163                 exit(10);
 164         }
 165         printf("read %d bytes\n", ret);
 166         ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 167         if (ret < 0) {
 168                 printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 169                 exit(10);
 170         }
 171         printf("read %d bytes\n", ret);
 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
 185         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_CUR, &offset);
 186         if (ret < 0) {
 187                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 188                 exit(10);
 189         }
 190         printf("File position is %d\n", (int)offset);
 191
 192         printf("seek to end of file\n");
 193         ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_END, &offset);
 194         if (ret < 0) {
 195                 printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 196                 exit(10);
 197         }
 198         printf("File position is %d\n", (int)offset);
 199
 200         ret = nfs_fstat(nfs, nfsfh, &st);
 201         if (ret != 0) {
 202                 printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 203                 exit(10);
 204         }
 205         printf("Mode %04o\n", st.st_mode);
 206         printf("Size %d\n", (int)st.st_size);
 207         printf("Inode %04o\n", (int)st.st_ino);
 208
 209
 210         ret = nfs_close(nfs, nfsfh);
 211         if (ret < 0) {
 212                 printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 213                 exit(10);
 214         }
 215
 216         ret = nfs_opendir(nfs, NFSDIR, &nfsdir);
 217         if (ret != 0) {
 218                 printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 219                 exit(10);
 220         }
 221         while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
 222           char filename[1024];
 223                 printf("Inode:%d Name:%s ", (int)nfsdirent->inode, nfsdirent->name);
 224                 sprintf(&filename, "%s/%s", NFSDIR, nfsdirent->name);
 225                 ret = nfs_open(nfs, filename, O_RDONLY, &nfsfh);
 226                 if (ret != 0) {
 227                         printf("Failed to open(%s) %s\n", filename, nfs_get_error(nfs));
 228                         exit(10);
 229                 }
 230                 ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
 231                 if (ret < 0) {
 232                         printf("Error reading file\n");
 233                         exit(10);
 234                 }
 235                 printf("Read %d bytes\n", ret);
 236                 ret = nfs_close(nfs, nfsfh);
 237                 if (ret < 0) {
 238                         printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
 239                         exit(10);
 240                 }
 241         }
 242         nfs_closedir(nfs, nfsdir);
 243
 244
 245         ret = nfs_open(nfs, NFSFILEW, O_WRONLY, &nfsfh);
 246         if (ret != 0) {
 247                 printf("Failed to open(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 248                 exit(10);
 249         }
 250         ret = nfs_pwrite(nfs, nfsfh, 0, 16, buf);
 251         if (ret < 0) {
 252                 printf("Failed to pwrite(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 253                 exit(10);
 254         }
 255         ret = nfs_fsync(nfs, nfsfh);
 256         if (ret < 0) {
 257                 printf("Failed to fsync(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 258                 exit(10);
 259         }
 260         ret = nfs_close(nfs, nfsfh);
 261         if (ret < 0) {
 262                 printf("Failed to close(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
 263                 exit(10);
 264         }
 265
 266
 267         ret = nfs_statvfs(nfs, NFSDIR, &svfs);
 268         if (ret < 0) {
 269                 printf("Failed to statvfs(%s) %s\n", NFSDIR, nfs_get_error(nfs));
 270                 exit(10);
 271         }
 272         printf("files %d/%d/%d\n", (int)svfs.f_files, (int)svfs.f_ffree, (int)svfs.f_favail);
 273
 274
 275         ret = nfs_access(nfs, NFSFILE, R_OK);
 276         if (ret != 0) {
 277                 printf("Failed to access(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 278         }
 279
 280         /* become root */
 281         nfs_set_auth(nfs, authunix_create("Ronnies-Laptop", 0, 0, 0, NULL));
 282
 283         ret = nfs_link(nfs, NFSFILE, NFSFILER);
 284         if (ret != 0) {
 285                 printf("Failed to link(%s) %s\n", NFSFILE, nfs_get_error(nfs));
 286         }
 287
 288
 289         nfs_destroy_context(nfs);
 290         printf("nfsclient finished\n");
 291         return 0;
 292 }
 293