examples/nfsclient-async.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 async interface.
  19  */
  20
  21 #define SERVER "10.1.1.27"
  22 #define EXPORT "/shared"
  23 #define NFSFILE "/BOOKS/Classics/Dracula.djvu"
  24 #define NFSDIR "/BOOKS/Classics/"
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <stdint.h>
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31 #include <unistd.h>
  32 #include <fcntl.h>
  33 #include <poll.h>
  34 #include "libnfs.h"
  35
  36 struct client {
  37        char *server;
  38        char *export;
  39        uint32_t mount_port;
  40        struct nfsfh *nfsfh;
  41        int is_finished;
  42 };
  43
  44 void nfs_opendir_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
  45 {
  46         struct client *client = private_data;
  47         struct nfsdir *nfsdir = data;
  48         struct nfsdirent *nfsdirent;
  49
  50         if (status < 0) {
  51                 printf("opendir failed with \"%s\"\n", (char *)data);
  52                 exit(10);
  53         }
  54
  55         printf("opendir successful\n");
  56         while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
  57                 printf("Inode:%d Name:%s\n", (int)nfsdirent->inode, nfsdirent->name);
  58         }
  59         nfs_closedir(nfs, nfsdir);
  60
  61         client->is_finished = 1;
  62 }
  63
  64 void nfs_close_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
  65 {
  66         struct client *client = private_data;
  67
  68         if (status < 0) {
  69                 printf("close failed with \"%s\"\n", (char *)data);
  70                 exit(10);
  71         }
  72
  73         printf("close successful\n");
  74         printf("call opendir(%s)\n", NFSDIR);
  75         if (nfs_opendir_async(nfs, NFSDIR, nfs_opendir_cb, client) != 0) {
  76                 printf("Failed to start async nfs close\n");
  77                 exit(10);
  78         }
  79 }
  80
  81 void nfs_fstat_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
  82 {
  83         struct client *client = private_data;
  84         struct stat *st;
  85
  86         if (status < 0) {
  87                 printf("fstat call failed with \"%s\"\n", (char *)data);
  88                 exit(10);
  89         }
  90
  91         printf("Got reply from server for fstat(%s).\n", NFSFILE);
  92         st = (struct stat *)data;
  93         printf("Mode %04o\n", st->st_mode);
  94         printf("Size %d\n", (int)st->st_size);
  95         printf("Inode %04o\n", (int)st->st_ino);
  96
  97         printf("Close file\n");
  98         if (nfs_close_async(nfs, client->nfsfh, nfs_close_cb, client) != 0) {
  99                 printf("Failed to start async nfs close\n");
 100                 exit(10);
 101         }
 102 }
 103
 104 void nfs_read_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 105 {
 106         struct client *client = private_data;
 107         char *read_data;
 108         int i;
 109
 110         if (status < 0) {
 111                 printf("read failed with \"%s\"\n", (char *)data);
 112                 exit(10);
 113         }
 114
 115         printf("read successful with %d bytes of data\n", status);
 116         read_data = data;
 117         for (i=0;i<16;i++) {
 118                 printf("%02x ", read_data[i]&0xff);
 119         }
 120         printf("\n");
 121         printf("Fstat file :%s\n", NFSFILE);
 122         if (nfs_fstat_async(nfs, client->nfsfh, nfs_fstat_cb, client) != 0) {
 123                 printf("Failed to start async nfs fstat\n");
 124                 exit(10);
 125         }
 126 }
 127
 128 void nfs_open_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 129 {
 130         struct client *client = private_data;
 131         struct nfsfh *nfsfh;
 132
 133         if (status < 0) {
 134                 printf("open call failed with \"%s\"\n", (char *)data);
 135                 exit(10);
 136         }
 137
 138         nfsfh         = data;
 139         client->nfsfh = nfsfh;
 140         printf("Got reply from server for open(%s). Handle:%p\n", NFSFILE, data);
 141         printf("Read first 16 bytes\n");
 142         if (nfs_pread_async(nfs, nfsfh, 0, 16, nfs_read_cb, client) != 0) {
 143                 printf("Failed to start async nfs open\n");
 144                 exit(10);
 145         }
 146 }
 147
 148 void nfs_stat_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 149 {
 150         struct client *client = private_data;
 151         struct stat *st;
 152
 153         if (status < 0) {
 154                 printf("stat call failed with \"%s\"\n", (char *)data);
 155                 exit(10);
 156         }
 157
 158         printf("Got reply from server for stat(%s).\n", NFSFILE);
 159         st = (struct stat *)data;
 160         printf("Mode %04o\n", st->st_mode);
 161         printf("Size %d\n", (int)st->st_size);
 162         printf("Inode %04o\n", (int)st->st_ino);
 163
 164         printf("Open file for reading :%s\n", NFSFILE);
 165         if (nfs_open_async(nfs, NFSFILE, O_RDONLY, nfs_open_cb, client) != 0) {
 166                 printf("Failed to start async nfs open\n");
 167                 exit(10);
 168         }
 169 }
 170
 171 void nfs_mount_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
 172 {
 173         struct client *client = private_data;
 174
 175         if (status < 0) {
 176                 printf("mount/mnt call failed with \"%s\"\n", (char *)data);
 177                 exit(10);
 178         }
 179
 180         printf("Got reply from server for MOUNT/MNT procedure.\n");
 181         printf("Stat file :%s\n", NFSFILE);
 182         if (nfs_stat_async(nfs, NFSFILE, nfs_stat_cb, client) != 0) {
 183                 printf("Failed to start async nfs stat\n");
 184                 exit(10);
 185         }
 186 }
 187
 188
 189
 190 int main(int argc _U_, char *argv[] _U_)
 191 {
 192         struct nfs_context *nfs;
 193         struct pollfd pfd;
 194         int ret;
 195         struct client client;
 196
 197         client.server = SERVER;
 198         client.export = EXPORT;
 199         client.is_finished = 0;
 200
 201         nfs = nfs_init_context();
 202         if (nfs == NULL) {
 203                 printf("failed to init context\n");
 204                 exit(10);
 205         }
 206
 207         ret = nfs_mount_async(nfs, client.server, client.export, nfs_mount_cb, &client);
 208         if (ret != 0) {
 209                 printf("Failed to start async nfs mount\n");
 210                 exit(10);
 211         }
 212
 213         for (;;) {
 214                 pfd.fd = nfs_get_fd(nfs);
 215                 pfd.events = nfs_which_events(nfs);
 216
 217                 if (poll(&pfd, 1, -1) < 0) {
 218                         printf("Poll failed");
 219                         exit(10);
 220                 }
 221                 if (nfs_service(nfs, pfd.revents) < 0) {
 222                         printf("nfs_service failed\n");
 223                         break;
 224                 }
 225                 if (client.is_finished) {
 226                         break;
 227                 }
 228         }
 229
 230         nfs_destroy_context(nfs);
 231         printf("nfsclient finished\n");
 232         return 0;
 233 }