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 #define _FILE_OFFSET_BITS 64
  19 #define _GNU_SOURCE
  20
  21 /* Example program using the highlevel sync interface
  22  */
  23 #ifdef WIN32
  24 #include "win32_compat.h"
  25 #else
  26 #include <string.h>
  27 #include <fcntl.h>
  28 #include <sys/stat.h>
  29 #include <sys/statvfs.h>
  30 #endif
  31
  32
  33 #if defined(WIN32)
  34 #pragma comment(lib, "ws2_32.lib")
  35 WSADATA wsaData;
  36 #else
  37 #include <sys/statvfs.h>
  38 #include <unistd.h>
  39 #endif
  40
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <stdint.h>
  44 #include <inttypes.h>
  45 #include <sys/types.h>
  46 #include <sys/stat.h>
  47 #include <fcntl.h>
  48 #include "libnfs.h"
  49 #include <rpc/rpc.h>            /* for authunix_create() */
  50 #include <popt.h>
  51 #include "libnfs-raw.h"
  52 #include "libnfs-raw-mount.h"
  53
  54 struct client {
  55        char *server;
  56        char *export;
  57        uint32_t mount_port;
  58        int is_finished;
  59 };
  60
  61
  62 char buf[3*1024*1024+337];
  63
  64 void print_usage(void)
  65 {
  66         fprintf(stderr, "Usage: nfsclient-sync [-?|--help] [--usage] <url>\n");
  67 }
  68
  69 void print_help(void)
  70 {
  71         fprintf(stderr, "Usage: nfsclient-sync [OPTION...] <url>\n");
  72         fprintf(stderr, "\n");
  73         fprintf(stderr, "Help options:\n");
  74         fprintf(stderr, "  -?, --help                        Show this help message\n");
  75         fprintf(stderr, "      --usage                       Display brief usage message\n");
  76         fprintf(stderr, "\n");
  77         fprintf(stderr, "NFS URL format : nfs://<server>/<export-path>\n");
  78         fprintf(stderr, "\n");
  79         fprintf(stderr, "<host> is either of:\n");
  80         fprintf(stderr, "  \"hostname\"       nfs.example\n");
  81         fprintf(stderr, "  \"ipv4-address\"   10.1.1.27\n");
  82         fprintf(stderr, "  \"ipv6-address\"   [fce0::1]\n");
  83 }
  84
  85 int main(int argc, char *argv[])
  86 {
  87         struct nfs_context *nfs = NULL;
  88         int i, ret, res;
  89         uint64_t offset;
  90         struct client client;
  91         struct stat st;
  92         struct nfsfh  *nfsfh;
  93         struct nfsdir *nfsdir;
  94         struct nfsdirent *nfsdirent;
  95         struct statvfs svfs;
  96         exports export, tmp;
  97         int show_help = 0, show_usage = 0;
  98         poptContext pc;
  99         const char **extra_argv;
 100         int extra_argc = 0;
 101         const char *url = NULL;
 102         char *server = NULL, *path = NULL, *strp;
 103
 104         struct poptOption popt_options[] = {
 105                 { "help", '?', POPT_ARG_NONE, &show_help, 0, "Show this help message", NULL },
 106                 { "usage", 0, POPT_ARG_NONE, &show_usage, 0, "Display brief usage message", NULL },
 107                 POPT_TABLEEND
 108         };
 109
 110 #if defined(WIN32)
 111         if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
 112                 printf("Failed to start Winsock2\n");
 113                 exit(10);
 114         }
 115 #endif
 116
 117         pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_POSIXMEHARDER);
 118         if ((res = poptGetNextOpt(pc)) < -1) {
 119                 fprintf(stderr, "Failed to parse option : %s %s\n",
 120                         poptBadOption(pc, 0), poptStrerror(res));
 121                 exit(10);
 122         }
 123         extra_argv = poptGetArgs(pc);
 124         if (extra_argv) {
 125                 url = *extra_argv;
 126                 extra_argv++;
 127                 while (extra_argv[extra_argc]) {
 128                         extra_argc++;
 129                 }
 130         }
 131         poptFreeContext(pc);
 132
 133         if (show_help != 0) {
 134                 print_help();
 135                 exit(0);
 136         }
 137
 138         if (show_usage != 0) {
 139                 print_usage();
 140                 exit(0);
 141         }
 142
 143         if (url == NULL) {
 144                 fprintf(stderr, "No URL specified.\n");
 145                 print_usage();
 146                 exit(0);
 147         }
 148
 149         if (strncmp(url, "nfs://", 6)) {
 150                 fprintf(stderr, "Invalid URL specified.\n");
 151                 print_usage();
 152                 exit(0);
 153         }
 154
 155         server = strdup(url + 6);
 156         if (server == NULL) {
 157                 fprintf(stderr, "Failed to strdup server string\n");
 158                 exit(10);
 159         }
 160         if (server[0] == '/' || server[0] == '\0') {
 161                 fprintf(stderr, "Invalid server string.\n");
 162                 free(server);
 163                 exit(10);
 164         }
 165         strp = strchr(server, '/');
 166         if (strp == NULL) {
 167                 fprintf(stderr, "Invalid URL specified.\n");
 168                 print_usage();
 169                 free(server);
 170                 exit(0);
 171         }
 172         path = strdup(strp);
 173         if (path == NULL) {
 174                 fprintf(stderr, "Failed to strdup server string\n");
 175                 free(server);
 176                 exit(10);
 177         }
 178         if (path[0] != '/') {
 179                 fprintf(stderr, "Invalid path.\n");
 180                 free(server);
 181                 free(path);
 182                 exit(10);
 183         }
 184         *strp = 0;
 185
 186         client.server = server;
 187         client.export = path;
 188         client.is_finished = 0;
 189
 190
 191         nfs = nfs_init_context();
 192         if (nfs == NULL) {
 193                 printf("failed to init context\n");
 194                 goto finished;
 195         }
 196
 197         ret = nfs_mount(nfs, client.server, client.export);
 198         if (ret != 0) {
 199                 printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
 200                 goto finished;
 201         }
 202
 203
 204         ret = nfs_opendir(nfs, "/", &nfsdir);
 205         if (ret != 0) {
 206                 printf("Failed to opendir(\"/\")\n", nfs_get_error(nfs));
 207                 exit(10);
 208         }
 209         while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
 210                 char path[1024];
 211
 212                 if (!strcmp(nfsdirent->name, ".") || !strcmp(nfsdirent->name, "..")) {
 213                         continue;
 214                 }
 215
 216                 snprintf(path, 1024, "%s/%s", "/", nfsdirent->name);
 217                 ret = nfs_stat(nfs, path, &st);
 218                 if (ret != 0) {
 219                         fprintf(stderr, "Failed to stat(%s) %s\n", path, nfs_get_error(nfs));
 220                         continue;
 221                 }
 222
 223                 switch (st.st_mode & S_IFMT) {
 224                 case S_IFLNK:
 225                 case S_IFREG:
 226                         printf("-");
 227                         break;
 228                 case S_IFDIR:
 229                         printf("d");
 230                         break;
 231                 case S_IFCHR:
 232                         printf("c");
 233                         break;
 234                 case S_IFBLK:
 235                         printf("b");
 236                         break;
 237                 }
 238                 printf("%c%c%c",
 239                         "-r"[!!(st.st_mode & S_IRUSR)],
 240                         "-w"[!!(st.st_mode & S_IWUSR)],
 241                         "-x"[!!(st.st_mode & S_IXUSR)]
 242                 );
 243                 printf("%c%c%c",
 244                         "-r"[!!(st.st_mode & S_IRGRP)],
 245                         "-w"[!!(st.st_mode & S_IWGRP)],
 246                         "-x"[!!(st.st_mode & S_IXGRP)]
 247                 );
 248                 printf("%c%c%c",
 249                         "-r"[!!(st.st_mode & S_IROTH)],
 250                         "-w"[!!(st.st_mode & S_IWOTH)],
 251                         "-x"[!!(st.st_mode & S_IXOTH)]
 252                 );
 253                 printf(" %2d", st.st_nlink);
 254                 printf(" %5d", st.st_uid);
 255                 printf(" %5d", st.st_gid);
 256                 printf(" %12" PRId64, st.st_size);
 257
 258                 printf(" %s\n", nfsdirent->name);
 259         }
 260         nfs_closedir(nfs, nfsdir);
 261
 262
 263 finished:
 264         free(server);
 265         free(path);
 266         if (nfs != NULL) {
 267                 nfs_destroy_context(nfs);
 268         }
 269         printf("nfsclient finished\n");
 270         return 0;
 271 }
 272