samba30_compat.c

   1 /* usmb - mount SMB shares via FUSE and Samba
   2  * Copyright (C) 2006-2009 Geoff Johnstone
   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 version 3 as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  */
  16
  17 #include "config.h"
  18 #include <errno.h>
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include "samba3x-compat.h"
  23 #include "usmb.h"
  24 #include "usmb_file.h"
  25 #include "utils.h"
  26
  27
  28 int usmb_statfs (const char *path UNUSED, struct statvfs *vfs UNUSED)
  29 {
  30   (void)path;
  31   (void)vfs;
  32   return -ENOSYS;
  33 }
  34
  35
  36 int compat_truncate (const char *path UNUSED, SMBCFILE *file UNUSED, off_t size)
  37 {
  38   /* Windows doesn't support truncation so we implement a limited version:
  39    *  0 == size => create a new file for writing.
  40    *  current size == size => succeed.
  41    *  else return -ENOSYS.
  42    */
  43
  44   if (0 == size)
  45   {
  46     char *url = make_url (path);
  47     if (NULL == url)
  48       return -ENOMEM;
  49
  50     SMBCFILE *file_ = smbc_getFunctionOpen (ctx) (ctx, url,
  51                                                   O_WRONLY | O_TRUNC, 0);
  52     if (NULL == file_)
  53     {
  54       free_errno (url);
  55       return -errno;
  56     }
  57
  58     smbc_getFunctionClose (ctx) (ctx, file_);
  59     free (url);
  60
  61     return 0;
  62   }
  63
  64   struct stat st;
  65   int ret = usmb_getattr (path, &st);
  66
  67   if (0 != ret)
  68     return ret;
  69
  70   return (size == st.st_size) ? 0 : -ENOSYS;
  71 }
  72