src/client/lufs/captivefs-directory.c

   1 /* $Id$
   2  * lufs interface module directory objects implementation for libcaptive
   3  * Copyright (C) 2003 Jan Kratochvil <project-captive@jankratochvil.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; exactly version 2 of June 1991 is required
   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, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20 #include "config.h"
  21
  22 #include <glib/gmessages.h>
  23 #include "captivefs-misc.h"
  24 #include "captivefs-attr.h"
  25 #include "captivefs-vfs.h"
  26
  27 #include <captive/client-vfs.h>
  28 #include <captive/client-directory.h>
  29
  30 #include <lufs/fs.h>
  31 #include <lufs/proto.h>
  32
  33
  34 /* Read a directory's content
  35  * For each directory entry, call
  36  *    lu_cache_add2dir(struct directory *dir, char *name, char *link, struct lufs_fattr *fattr)
  37  * to add its information.
  38  * The link is optional(NULL) and applicable only if the entry is a
  39  * (sym)link and we have the target info at hand.
  40  *
  41  * Notes:
  42  *     dir_name is an absolute path.  However, it is generally a good idea
  43  * to either change to that directory here or at least keep track of what
  44  * directory was being called on, for function calls that might not get
  45  * absolute paths.
  46  *     If your filesystem doesn't natively support '.' or '..', don't forget
  47  * to add them to the cache first-thing here.
  48  */
  49 int captivefs_readdir(struct captivefs_vfs *captivefs_vfs,const char *dir_name,struct directory *ddir)
  50 {
  51 struct lufs_fattr fattr;
  52 GnomeVFSResult errvfsresult;
  53 CaptiveDirectoryObject *captive_directory_object;
  54 GnomeVFSFileInfo file_info;
  55 const char *dots[]={".","..",NULL},**csp;
  56
  57         g_return_val_if_fail(captivefs_vfs_validate(captivefs_vfs),-1);
  58         g_return_val_if_fail(dir_name!=NULL,-1);
  59         g_return_val_if_fail(ddir!=NULL,-1);
  60
  61         if (captivefs_vfs->options.debug_messages)
  62                 g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"captivefs_readdir: dir_name=%s",dir_name);
  63
  64         G_LOCK(libcaptive);
  65         errvfsresult=captive_directory_new_open(&captive_directory_object,captivefs_vfs->captive_vfs_object,dir_name);
  66         G_UNLOCK(libcaptive);
  67         if (errvfsresult!=GNOME_VFS_OK)
  68                 goto fail;
  69
  70         file_info.valid_fields=GNOME_VFS_FILE_INFO_FIELDS_TYPE;
  71         file_info.type=GNOME_VFS_FILE_TYPE_DIRECTORY;
  72         if (!captivefs_GnomeVFSFileInfo_to_lufs_fattr(captivefs_vfs,&fattr,&file_info))
  73                 goto fail_unref;
  74         for (csp=dots;*csp;csp++)
  75                 if (0>lu_cache_add2dir(ddir,(/* de-const */ char *)*csp,NULL,&fattr)) {
  76                         g_warning("Failed lu_cache_add2dir() for: %s",*csp);
  77                         goto fail_unref;
  78                         }
  79
  80         for (;;) {
  81                 G_LOCK(libcaptive);
  82                 errvfsresult=captive_directory_read(captive_directory_object,&file_info);
  83                 G_UNLOCK(libcaptive);
  84                 if (errvfsresult==GNOME_VFS_ERROR_EOF) {
  85                         /* 'captive_directory_object' is now stuck at EOF - GnomeVFS behaves that way. */
  86                         break;
  87                         }
  88                 if (errvfsresult!=GNOME_VFS_OK)
  89                         goto fail_unref;
  90
  91                 if (!captivefs_GnomeVFSFileInfo_to_lufs_fattr(captivefs_vfs,&fattr,&file_info))
  92                         goto fail_unref;
  93
  94                 if (0>lu_cache_add2dir(ddir,file_info.name,NULL,&fattr)) {
  95                         g_warning("Failed lu_cache_add2dir() for: %s",file_info.name);
  96                         goto fail_unref;
  97                         }
  98
  99                 if (captivefs_vfs->options.debug_messages)
 100                         g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"captivefs_readdir: got: %s",file_info.name);
 101                 }
 102
 103         G_LOCK(libcaptive);
 104         g_object_unref(captive_directory_object);
 105         G_UNLOCK(libcaptive);
 106
 107         return 0;
 108
 109 fail_unref:
 110         G_LOCK(libcaptive);
 111         g_object_unref(captive_directory_object);
 112         G_UNLOCK(libcaptive);
 113 fail:
 114         return -1;
 115 }
 116
 117
 118 /* Create a directory
 119  */
 120 int captivefs_mkdir(struct captivefs_vfs *captivefs_vfs,const char *dir,int mode)
 121 {
 122 CaptiveDirectoryObject *captive_directory_object;
 123 GnomeVFSResult errvfsresult;
 124
 125         g_return_val_if_fail(captivefs_vfs_validate(captivefs_vfs),-1);
 126         g_return_val_if_fail(dir!=NULL,-1);
 127
 128         if (captivefs_vfs->options.debug_messages)
 129                 g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"captivefs_mkdir: dir=%s,mode=0x%X",dir,mode);
 130
 131         G_LOCK(libcaptive);
 132         errvfsresult=captive_directory_new_make(&captive_directory_object,captivefs_vfs->captive_vfs_object,dir,mode);
 133         G_UNLOCK(libcaptive);
 134         if (errvfsresult!=GNOME_VFS_OK)
 135                 return -1;
 136
 137         G_LOCK(libcaptive);
 138         g_object_unref(captive_directory_object);
 139         G_UNLOCK(libcaptive);
 140
 141         return 0;
 142 }
 143
 144
 145 /* Delete a directory
 146  */
 147 int captivefs_rmdir(struct captivefs_vfs *captivefs_vfs,const char *dir)
 148 {
 149 CaptiveDirectoryObject *captive_directory_object;
 150 GnomeVFSResult errvfsresult;
 151
 152         g_return_val_if_fail(captivefs_vfs_validate(captivefs_vfs),-1);
 153         g_return_val_if_fail(dir!=NULL,-1);
 154
 155         if (captivefs_vfs->options.debug_messages)
 156                 g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"captivefs_rmdir: dir=%s",dir);
 157
 158         G_LOCK(libcaptive);
 159         errvfsresult=captive_directory_new_open(&captive_directory_object,captivefs_vfs->captive_vfs_object,dir);
 160         G_UNLOCK(libcaptive);
 161         if (errvfsresult!=GNOME_VFS_OK)
 162                 return -1;
 163
 164         G_LOCK(libcaptive);
 165         errvfsresult=captive_directory_remove(captive_directory_object);
 166         G_UNLOCK(libcaptive);
 167
 168         G_LOCK(libcaptive);
 169         g_object_unref(captive_directory_object);
 170         G_UNLOCK(libcaptive);
 171
 172         if (errvfsresult!=GNOME_VFS_OK)
 173                 return -1;
 174         return 0;
 175 }