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         dir_name=CAPTIVEFS_FILENAME_TO_UTF8_ALLOCA(dir_name);
  65
  66         G_LOCK(libcaptive);
  67         errvfsresult=captive_directory_new_open(&captive_directory_object,captivefs_vfs->captive_vfs_object,dir_name);
  68         G_UNLOCK(libcaptive);
  69         if (errvfsresult!=GNOME_VFS_OK)
  70                 goto fail;
  71
  72         file_info.valid_fields=GNOME_VFS_FILE_INFO_FIELDS_TYPE;
  73         file_info.type=GNOME_VFS_FILE_TYPE_DIRECTORY;
  74         if (!captivefs_GnomeVFSFileInfo_to_lufs_fattr(captivefs_vfs,&fattr,&file_info))
  75                 goto fail_unref;
  76         for (csp=dots;*csp;csp++)
  77                 if (0>lu_cache_add2dir(ddir,(/* de-const */ char *)*csp,NULL,&fattr)) {
  78                         g_warning("Failed lu_cache_add2dir() for: %s",*csp);
  79                         goto fail_unref;
  80                         }
  81
  82         for (;;) {
  83 char *file_info_name_filename;
  84 int errint;
  85
  86                 G_LOCK(libcaptive);
  87                 errvfsresult=captive_directory_read(captive_directory_object,&file_info);
  88                 G_UNLOCK(libcaptive);
  89                 if (errvfsresult==GNOME_VFS_ERROR_EOF) {
  90                         /* 'captive_directory_object' is now stuck at EOF - GnomeVFS behaves that way. */
  91                         break;
  92                         }
  93                 if (errvfsresult!=GNOME_VFS_OK)
  94                         goto fail_unref;
  95
  96                 if (!captivefs_GnomeVFSFileInfo_to_lufs_fattr(captivefs_vfs,&fattr,&file_info))
  97                         goto fail_unref;
  98
  99                 file_info_name_filename=captivefs_filename_from_utf8_malloc_errorchecking(file_info.name);
 100                 errint=lu_cache_add2dir(ddir,
 101                                 (file_info_name_filename ? file_info_name_filename : file_info.name),
 102                                 NULL,&fattr);
 103                 g_free(file_info_name_filename);        /* may be NULL */
 104                 if (0>errint) {
 105                         g_warning("Failed lu_cache_add2dir() for: %s",file_info.name);
 106                         goto fail_unref;
 107                         }
 108
 109                 if (captivefs_vfs->options.debug_messages)
 110                         g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"captivefs_readdir: got: %s",file_info.name);
 111                 }
 112
 113         G_LOCK(libcaptive);
 114         g_object_unref(captive_directory_object);
 115         G_UNLOCK(libcaptive);
 116
 117         return 0;
 118
 119 fail_unref:
 120         G_LOCK(libcaptive);
 121         g_object_unref(captive_directory_object);
 122         G_UNLOCK(libcaptive);
 123 fail:
 124         return -1;
 125 }
 126
 127
 128 /* Create a directory
 129  */
 130 int captivefs_mkdir(struct captivefs_vfs *captivefs_vfs,const char *dir,int mode)
 131 {
 132 CaptiveDirectoryObject *captive_directory_object;
 133 GnomeVFSResult errvfsresult;
 134
 135         g_return_val_if_fail(captivefs_vfs_validate(captivefs_vfs),-1);
 136         g_return_val_if_fail(dir!=NULL,-1);
 137
 138         if (captivefs_vfs->options.debug_messages)
 139                 g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"captivefs_mkdir: dir=%s,mode=0x%X",dir,mode);
 140
 141         dir=CAPTIVEFS_FILENAME_TO_UTF8_ALLOCA(dir);
 142
 143         G_LOCK(libcaptive);
 144         errvfsresult=captive_directory_new_make(&captive_directory_object,captivefs_vfs->captive_vfs_object,dir,mode);
 145         G_UNLOCK(libcaptive);
 146         if (errvfsresult!=GNOME_VFS_OK)
 147                 return -1;
 148
 149         G_LOCK(libcaptive);
 150         g_object_unref(captive_directory_object);
 151         G_UNLOCK(libcaptive);
 152
 153         return 0;
 154 }
 155
 156
 157 /* Delete a directory
 158  */
 159 int captivefs_rmdir(struct captivefs_vfs *captivefs_vfs,const char *dir)
 160 {
 161 CaptiveDirectoryObject *captive_directory_object;
 162 GnomeVFSResult errvfsresult;
 163
 164         g_return_val_if_fail(captivefs_vfs_validate(captivefs_vfs),-1);
 165         g_return_val_if_fail(dir!=NULL,-1);
 166
 167         if (captivefs_vfs->options.debug_messages)
 168                 g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"captivefs_rmdir: dir=%s",dir);
 169
 170         dir=CAPTIVEFS_FILENAME_TO_UTF8_ALLOCA(dir);
 171
 172         G_LOCK(libcaptive);
 173         errvfsresult=captive_directory_new_open(&captive_directory_object,captivefs_vfs->captive_vfs_object,dir);
 174         G_UNLOCK(libcaptive);
 175         if (errvfsresult!=GNOME_VFS_OK)
 176                 return -1;
 177
 178         G_LOCK(libcaptive);
 179         errvfsresult=captive_directory_remove(captive_directory_object);
 180         G_UNLOCK(libcaptive);
 181
 182         G_LOCK(libcaptive);
 183         g_object_unref(captive_directory_object);
 184         G_UNLOCK(libcaptive);
 185
 186         if (errvfsresult!=GNOME_VFS_OK)
 187                 return -1;
 188         return 0;
 189 }