b80d83f07b
determine if an iso image has XA attributes. bytesex.h and bytesex_asm.h are now public. (Down the line should use glib though.) Package has been revised to the move. iso-info.c: shows XA attributes what that it is available.
786 lines
19 KiB
C
786 lines
19 KiB
C
/*
|
||
$Id: iso9660_fs.c,v 1.26 2004/10/22 01:13:38 rocky Exp $
|
||
|
||
Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org>
|
||
Copyright (C) 2003, 2004 Rocky Bernstein <rocky@panix.com>
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
*/
|
||
|
||
#ifdef HAVE_CONFIG_H
|
||
# include "config.h"
|
||
#endif
|
||
|
||
#ifdef HAVE_STRING_H
|
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#include <string.h>
|
||
#endif
|
||
|
||
#include <cdio/cdio.h>
|
||
#include <cdio/bytesex.h>
|
||
#include <cdio/iso9660.h>
|
||
#include <cdio/util.h>
|
||
|
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/* Private headers */
|
||
#include "cdio_assert.h"
|
||
#include "_cdio_stdio.h"
|
||
#include "cdio_private.h"
|
||
|
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#include <stdio.h>
|
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|
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static const char _rcsid[] = "$Id: iso9660_fs.c,v 1.26 2004/10/22 01:13:38 rocky Exp $";
|
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|
||
/* Implementation of iso9660_t type */
|
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struct _iso9660 {
|
||
CdioDataSource *stream; /* Stream pointer */
|
||
bool b_xa; /* true if has XA attributes. */
|
||
};
|
||
|
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/*!
|
||
Open an ISO 9660 image for reading. Maybe in the future we will have
|
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flags and mode. NULL is returned on error.
|
||
*/
|
||
iso9660_t *
|
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iso9660_open (const char *pathname /*flags, mode */)
|
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{
|
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iso9660_t *p_iso = (iso9660_t *) _cdio_malloc(sizeof(struct _iso9660)) ;
|
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iso9660_pvd_t pvd;
|
||
|
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if (NULL == p_iso) return NULL;
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|
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p_iso->stream = cdio_stdio_new( pathname );
|
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if (NULL == p_iso->stream)
|
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goto error;
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if (!iso9660_ifs_read_pvd(p_iso, &pvd))
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goto error;
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/* Determine if image has XA attributes. */
|
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|
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p_iso->b_xa = !strncmp ((char *) &pvd + ISO_XA_MARKER_OFFSET,
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ISO_XA_MARKER_STRING,
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strlen (ISO_XA_MARKER_STRING));
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return p_iso;
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error:
|
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free(p_iso);
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return NULL;
|
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}
|
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||
|
||
|
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/*!
|
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Close previously opened ISO 9660 image.
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True is unconditionally returned. If there was an error false would
|
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be returned.
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*/
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bool
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iso9660_close (iso9660_t *p_iso)
|
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{
|
||
if (NULL != p_iso) {
|
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cdio_stdio_destroy(p_iso->stream);
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free(p_iso);
|
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}
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return true;
|
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}
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|
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static bool
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check_pvd (const iso9660_pvd_t *p_pvd)
|
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{
|
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if (p_pvd->type != ISO_VD_PRIMARY) {
|
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cdio_warn ("unexpected PVD type %d", p_pvd->type);
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return false;
|
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}
|
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|
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if (strncmp (p_pvd->id, ISO_STANDARD_ID, strlen (ISO_STANDARD_ID)))
|
||
{
|
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cdio_warn ("unexpected ID encountered (expected `"
|
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ISO_STANDARD_ID "', got `%.5s'", p_pvd->id);
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return false;
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}
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return true;
|
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}
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|
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/*!
|
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Read the Primary Volume Descriptor for an ISO 9660 image.
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*/
|
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bool
|
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iso9660_ifs_read_pvd (const iso9660_t *p_iso, /*out*/ iso9660_pvd_t *p_pvd)
|
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{
|
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if (0 == iso9660_iso_seek_read (p_iso, p_pvd, ISO_PVD_SECTOR, 1)) {
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cdio_warn ("error reading PVD sector (%d)", ISO_PVD_SECTOR);
|
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return false;
|
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}
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return check_pvd(p_pvd);
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}
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|
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|
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/*!
|
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Read the Primary Volume Descriptor for of CD.
|
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*/
|
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bool
|
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iso9660_fs_read_mode2_pvd(const CdIo *cdio, /*out*/ iso9660_pvd_t *p_pvd,
|
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bool b_form2)
|
||
{
|
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if (cdio_read_mode2_sector (cdio, p_pvd, ISO_PVD_SECTOR, b_form2)) {
|
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cdio_warn ("error reading PVD sector (%d)", ISO_PVD_SECTOR);
|
||
return false;
|
||
}
|
||
|
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return check_pvd(p_pvd);
|
||
}
|
||
|
||
|
||
/*!
|
||
Seek to a position and then read n blocks. Size read is returned.
|
||
*/
|
||
long int
|
||
iso9660_iso_seek_read (const iso9660_t *p_iso, void *ptr, lsn_t start,
|
||
long int size)
|
||
{
|
||
long int ret;
|
||
if (NULL == p_iso) return 0;
|
||
ret = cdio_stream_seek (p_iso->stream, start * ISO_BLOCKSIZE, SEEK_SET);
|
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if (ret!=0) return 0;
|
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return cdio_stream_read (p_iso->stream, ptr, ISO_BLOCKSIZE, size);
|
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}
|
||
|
||
|
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static iso9660_stat_t *
|
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_iso9660_dir_to_statbuf (const iso9660_dir_t *iso9660_dir, bool is_mode2)
|
||
{
|
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iso9660_xa_t *xa_data = NULL;
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uint8_t dir_len= iso9660_get_dir_len(iso9660_dir);
|
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unsigned int filename_len;
|
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unsigned int stat_len;
|
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iso9660_stat_t *stat;
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|
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if (!dir_len) return NULL;
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filename_len = from_711(iso9660_dir->filename_len);
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/* .. string in statbuf is one longer than in iso9660_dir's listing '\1' */
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stat_len = sizeof(iso9660_stat_t)+filename_len+2;
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||
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stat = _cdio_malloc(stat_len);
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stat->type = (iso9660_dir->file_flags & ISO_DIRECTORY)
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? _STAT_DIR : _STAT_FILE;
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stat->lsn = from_733 (iso9660_dir->extent);
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stat->size = from_733 (iso9660_dir->size);
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stat->secsize = _cdio_len2blocks (stat->size, ISO_BLOCKSIZE);
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if (iso9660_dir->filename[0] == '\0')
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strcpy (stat->filename, ".");
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else if (iso9660_dir->filename[0] == '\1')
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strcpy (stat->filename, "..");
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else
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strncpy (stat->filename, iso9660_dir->filename, filename_len);
|
||
|
||
iso9660_get_dtime(&(iso9660_dir->recording_time), true, &(stat->tm));
|
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|
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cdio_assert (dir_len >= sizeof (iso9660_dir_t));
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if (is_mode2) {
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int su_length = iso9660_get_dir_len(iso9660_dir) - sizeof (iso9660_dir_t);
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su_length -= filename_len;
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if (su_length % 2)
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su_length--;
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if (su_length < 0 || su_length < sizeof (iso9660_xa_t))
|
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return stat;
|
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|
||
xa_data = (void *) (((char *) iso9660_dir)
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+ (iso9660_get_dir_len(iso9660_dir) - su_length));
|
||
|
||
if (xa_data->signature[0] != 'X'
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|| xa_data->signature[1] != 'A')
|
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{
|
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cdio_warn ("XA signature not found in ISO9660's system use area;"
|
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" ignoring XA attributes for this file entry.");
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cdio_debug ("%d %d %d, '%c%c' (%d, %d)",
|
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iso9660_get_dir_len(iso9660_dir),
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filename_len,
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su_length,
|
||
xa_data->signature[0], xa_data->signature[1],
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||
xa_data->signature[0], xa_data->signature[1]);
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||
return stat;
|
||
}
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||
stat->xa = *xa_data;
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}
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return stat;
|
||
|
||
}
|
||
|
||
/*!
|
||
Return the directory name stored in the iso9660_dir_t
|
||
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A string is allocated: the caller must deallocate.
|
||
*/
|
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char *
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iso9660_dir_to_name (const iso9660_dir_t *iso9660_dir)
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||
{
|
||
char namebuf[256] = { 0, };
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||
uint8_t len=iso9660_get_dir_len(iso9660_dir);
|
||
|
||
if (!len) return NULL;
|
||
|
||
cdio_assert (len >= sizeof (iso9660_dir_t));
|
||
|
||
/* (iso9660_dir->file_flags & ISO_DIRECTORY) */
|
||
|
||
if (iso9660_dir->filename[0] == '\0')
|
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strcpy (namebuf, ".");
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else if (iso9660_dir->filename[0] == '\1')
|
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strcpy (namebuf, "..");
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else
|
||
strncpy (namebuf, iso9660_dir->filename, iso9660_dir->filename_len);
|
||
|
||
return strdup (namebuf);
|
||
}
|
||
|
||
/*
|
||
Return a pointer to a ISO 9660 stat buffer or NULL if there's an error
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*/
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||
static iso9660_stat_t *
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||
_fs_stat_root (const CdIo *cdio, bool is_mode2)
|
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{
|
||
char block[ISO_BLOCKSIZE] = { 0, };
|
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const iso9660_pvd_t *pvd = (void *) █
|
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const iso9660_dir_t *iso9660_dir = (void *) pvd->root_directory_record;
|
||
iso9660_stat_t *stat;
|
||
|
||
if (is_mode2) {
|
||
if (cdio_read_mode2_sector (cdio, &block, ISO_PVD_SECTOR, false)) {
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cdio_warn("Could not read Primary Volume descriptor (PVD).");
|
||
return NULL;
|
||
}
|
||
} else {
|
||
if (cdio_read_mode1_sector (cdio, &block, ISO_PVD_SECTOR, false)) {
|
||
cdio_warn("Could not read Primary Volume descriptor (PVD).");
|
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return NULL;
|
||
}
|
||
}
|
||
|
||
stat = _iso9660_dir_to_statbuf (iso9660_dir, is_mode2);
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||
return stat;
|
||
}
|
||
|
||
static iso9660_stat_t *
|
||
_fs_stat_iso_root (iso9660_t *iso)
|
||
{
|
||
char block[ISO_BLOCKSIZE] = { 0, };
|
||
const iso9660_pvd_t *pvd = (void *) █
|
||
const iso9660_dir_t *iso9660_dir = (void *) pvd->root_directory_record;
|
||
iso9660_stat_t *stat;
|
||
int ret;
|
||
|
||
ret = iso9660_iso_seek_read (iso, block, ISO_PVD_SECTOR, 1);
|
||
if (ret!=ISO_BLOCKSIZE) return NULL;
|
||
|
||
stat = _iso9660_dir_to_statbuf (iso9660_dir, true);
|
||
return stat;
|
||
}
|
||
|
||
static iso9660_stat_t *
|
||
_fs_stat_traverse (const CdIo *cdio, const iso9660_stat_t *_root,
|
||
char **splitpath, bool is_mode2, bool translate)
|
||
{
|
||
unsigned offset = 0;
|
||
uint8_t *_dirbuf = NULL;
|
||
iso9660_stat_t *stat;
|
||
|
||
if (!splitpath[0])
|
||
{
|
||
unsigned int len=sizeof(iso9660_stat_t) + strlen(_root->filename)+1;
|
||
stat = _cdio_malloc(len);
|
||
memcpy(stat, _root, len);
|
||
return stat;
|
||
}
|
||
|
||
if (_root->type == _STAT_FILE)
|
||
return NULL;
|
||
|
||
cdio_assert (_root->type == _STAT_DIR);
|
||
|
||
if (_root->size != ISO_BLOCKSIZE * _root->secsize)
|
||
{
|
||
cdio_warn ("bad size for ISO9660 directory (%ud) should be (%lu)!",
|
||
(unsigned) _root->size,
|
||
(unsigned long int) ISO_BLOCKSIZE * _root->secsize);
|
||
}
|
||
|
||
_dirbuf = _cdio_malloc (_root->secsize * ISO_BLOCKSIZE);
|
||
|
||
if (is_mode2) {
|
||
if (cdio_read_mode2_sectors (cdio, _dirbuf, _root->lsn, false,
|
||
_root->secsize))
|
||
return NULL;
|
||
} else {
|
||
if (cdio_read_mode1_sectors (cdio, _dirbuf, _root->lsn, false,
|
||
_root->secsize))
|
||
return NULL;
|
||
}
|
||
|
||
while (offset < (_root->secsize * ISO_BLOCKSIZE))
|
||
{
|
||
const iso9660_dir_t *iso9660_dir = (void *) &_dirbuf[offset];
|
||
iso9660_stat_t *stat;
|
||
int cmp;
|
||
|
||
if (!iso9660_get_dir_len(iso9660_dir))
|
||
{
|
||
offset++;
|
||
continue;
|
||
}
|
||
|
||
stat = _iso9660_dir_to_statbuf (iso9660_dir, is_mode2);
|
||
|
||
if (translate) {
|
||
char *trans_fname = malloc(strlen(stat->filename));
|
||
int trans_len;
|
||
|
||
if (trans_fname == NULL) {
|
||
cdio_warn("can't allocate %lu bytes",
|
||
(long unsigned int) strlen(stat->filename));
|
||
return NULL;
|
||
}
|
||
trans_len = iso9660_name_translate(stat->filename, trans_fname);
|
||
cmp = strcmp(splitpath[0], trans_fname);
|
||
free(trans_fname);
|
||
} else {
|
||
cmp = strcmp(splitpath[0], stat->filename);
|
||
}
|
||
|
||
if (!cmp) {
|
||
iso9660_stat_t *ret_stat
|
||
= _fs_stat_traverse (cdio, stat, &splitpath[1], is_mode2,
|
||
translate);
|
||
free(stat);
|
||
free (_dirbuf);
|
||
return ret_stat;
|
||
}
|
||
|
||
free(stat);
|
||
|
||
offset += iso9660_get_dir_len(iso9660_dir);
|
||
}
|
||
|
||
cdio_assert (offset == (_root->secsize * ISO_BLOCKSIZE));
|
||
|
||
/* not found */
|
||
free (_dirbuf);
|
||
return NULL;
|
||
}
|
||
|
||
static iso9660_stat_t *
|
||
_fs_iso_stat_traverse (iso9660_t *iso, const iso9660_stat_t *_root,
|
||
char **splitpath, bool translate)
|
||
{
|
||
unsigned offset = 0;
|
||
uint8_t *_dirbuf = NULL;
|
||
iso9660_stat_t *stat;
|
||
int ret;
|
||
|
||
if (!splitpath[0])
|
||
{
|
||
unsigned int len=sizeof(iso9660_stat_t) + strlen(_root->filename)+1;
|
||
stat = _cdio_malloc(len);
|
||
memcpy(stat, _root, len);
|
||
return stat;
|
||
}
|
||
|
||
if (_root->type == _STAT_FILE)
|
||
return NULL;
|
||
|
||
cdio_assert (_root->type == _STAT_DIR);
|
||
|
||
if (_root->size != ISO_BLOCKSIZE * _root->secsize)
|
||
{
|
||
cdio_warn ("bad size for ISO9660 directory (%ud) should be (%lu)!",
|
||
(unsigned) _root->size,
|
||
(unsigned long int) ISO_BLOCKSIZE * _root->secsize);
|
||
}
|
||
|
||
_dirbuf = _cdio_malloc (_root->secsize * ISO_BLOCKSIZE);
|
||
|
||
ret = iso9660_iso_seek_read (iso, _dirbuf, _root->lsn, _root->secsize);
|
||
if (ret!=ISO_BLOCKSIZE*_root->secsize) return NULL;
|
||
|
||
while (offset < (_root->secsize * ISO_BLOCKSIZE))
|
||
{
|
||
const iso9660_dir_t *iso9660_dir = (void *) &_dirbuf[offset];
|
||
iso9660_stat_t *stat;
|
||
int cmp;
|
||
|
||
if (!iso9660_get_dir_len(iso9660_dir))
|
||
{
|
||
offset++;
|
||
continue;
|
||
}
|
||
|
||
stat = _iso9660_dir_to_statbuf (iso9660_dir, true);
|
||
|
||
if (translate) {
|
||
char *trans_fname = malloc(strlen(stat->filename)+1);
|
||
int trans_len;
|
||
|
||
if (trans_fname == NULL) {
|
||
cdio_warn("can't allocate %lu bytes",
|
||
(long unsigned int) strlen(stat->filename));
|
||
return NULL;
|
||
}
|
||
trans_len = iso9660_name_translate(stat->filename, trans_fname);
|
||
cmp = strcmp(splitpath[0], trans_fname);
|
||
free(trans_fname);
|
||
} else {
|
||
cmp = strcmp(splitpath[0], stat->filename);
|
||
}
|
||
|
||
if (!cmp) {
|
||
iso9660_stat_t *ret_stat
|
||
= _fs_iso_stat_traverse (iso, stat, &splitpath[1], translate);
|
||
free(stat);
|
||
free (_dirbuf);
|
||
return ret_stat;
|
||
}
|
||
|
||
free(stat);
|
||
|
||
offset += iso9660_get_dir_len(iso9660_dir);
|
||
}
|
||
|
||
cdio_assert (offset == (_root->secsize * ISO_BLOCKSIZE));
|
||
|
||
/* not found */
|
||
free (_dirbuf);
|
||
return NULL;
|
||
}
|
||
|
||
/*!
|
||
Get file status for pathname into stat. NULL is returned on error.
|
||
*/
|
||
iso9660_stat_t *
|
||
iso9660_fs_stat (const CdIo *cdio, const char pathname[], bool is_mode2)
|
||
{
|
||
iso9660_stat_t *root;
|
||
char **splitpath;
|
||
iso9660_stat_t *stat;
|
||
|
||
if (cdio == NULL) return NULL;
|
||
if (pathname == NULL) return NULL;
|
||
|
||
root = _fs_stat_root (cdio, is_mode2);
|
||
if (NULL == root) return NULL;
|
||
|
||
splitpath = _cdio_strsplit (pathname, '/');
|
||
stat = _fs_stat_traverse (cdio, root, splitpath, is_mode2, false);
|
||
free(root);
|
||
_cdio_strfreev (splitpath);
|
||
|
||
return stat;
|
||
}
|
||
|
||
/*!
|
||
Get file status for pathname into stat. NULL is returned on error.
|
||
pathname version numbers in the ISO 9660
|
||
name are dropped, i.e. ;1 is removed and if level 1 ISO-9660 names
|
||
are lowercased.
|
||
*/
|
||
iso9660_stat_t *
|
||
iso9660_fs_stat_translate (const CdIo *cdio, const char pathname[],
|
||
bool is_mode2)
|
||
{
|
||
iso9660_stat_t *root;
|
||
char **splitpath;
|
||
iso9660_stat_t *stat;
|
||
|
||
if (cdio == NULL) return NULL;
|
||
if (pathname == NULL) return NULL;
|
||
|
||
root = _fs_stat_root (cdio, is_mode2);
|
||
if (NULL == root) return NULL;
|
||
|
||
splitpath = _cdio_strsplit (pathname, '/');
|
||
stat = _fs_stat_traverse (cdio, root, splitpath, is_mode2, true);
|
||
free(root);
|
||
_cdio_strfreev (splitpath);
|
||
|
||
return stat;
|
||
}
|
||
|
||
/*!
|
||
Get file status for pathname into stat. NULL is returned on error.
|
||
*/
|
||
iso9660_stat_t *
|
||
iso9660_ifs_stat (iso9660_t *iso, const char pathname[])
|
||
{
|
||
iso9660_stat_t *root;
|
||
char **splitpath;
|
||
iso9660_stat_t *stat;
|
||
|
||
if (iso == NULL) return NULL;
|
||
if (pathname == NULL) return NULL;
|
||
|
||
root = _fs_stat_iso_root (iso);
|
||
if (NULL == root) return NULL;
|
||
|
||
splitpath = _cdio_strsplit (pathname, '/');
|
||
stat = _fs_iso_stat_traverse (iso, root, splitpath, false);
|
||
free(root);
|
||
_cdio_strfreev (splitpath);
|
||
|
||
return stat;
|
||
}
|
||
|
||
/*!
|
||
Get file status for pathname into stat. NULL is returned on error.
|
||
pathname version numbers in the ISO 9660
|
||
name are dropped, i.e. ;1 is removed and if level 1 ISO-9660 names
|
||
are lowercased.
|
||
*/
|
||
iso9660_stat_t *
|
||
iso9660_ifs_stat_translate (iso9660_t *iso, const char pathname[])
|
||
{
|
||
iso9660_stat_t *root;
|
||
char **splitpath;
|
||
iso9660_stat_t *stat;
|
||
|
||
if (iso == NULL) return NULL;
|
||
if (pathname == NULL) return NULL;
|
||
|
||
root = _fs_stat_iso_root (iso);
|
||
if (NULL == root) return NULL;
|
||
|
||
splitpath = _cdio_strsplit (pathname, '/');
|
||
stat = _fs_iso_stat_traverse (iso, root, splitpath, true);
|
||
free(root);
|
||
_cdio_strfreev (splitpath);
|
||
|
||
return stat;
|
||
}
|
||
|
||
/*!
|
||
Read pathname (a directory) and return a list of iso9660_stat_t
|
||
of the files inside that. The caller must free the returned result.
|
||
*/
|
||
CdioList *
|
||
iso9660_fs_readdir (const CdIo *cdio, const char pathname[], bool is_mode2)
|
||
{
|
||
iso9660_stat_t *stat;
|
||
|
||
if (NULL == cdio) return NULL;
|
||
if (NULL == pathname) return NULL;
|
||
|
||
stat = iso9660_fs_stat (cdio, pathname, is_mode2);
|
||
if (NULL == stat)
|
||
return NULL;
|
||
|
||
if (stat->type != _STAT_DIR) {
|
||
free(stat);
|
||
return NULL;
|
||
}
|
||
|
||
{
|
||
unsigned offset = 0;
|
||
uint8_t *_dirbuf = NULL;
|
||
CdioList *retval = _cdio_list_new ();
|
||
|
||
if (stat->size != ISO_BLOCKSIZE * stat->secsize)
|
||
{
|
||
cdio_warn ("bad size for ISO9660 directory (%ud) should be (%lu)!",
|
||
(unsigned) stat->size,
|
||
(unsigned long int) ISO_BLOCKSIZE * stat->secsize);
|
||
}
|
||
|
||
_dirbuf = _cdio_malloc (stat->secsize * ISO_BLOCKSIZE);
|
||
|
||
if (is_mode2) {
|
||
if (cdio_read_mode2_sectors (cdio, _dirbuf, stat->lsn, false,
|
||
stat->secsize))
|
||
cdio_assert_not_reached ();
|
||
} else {
|
||
if (cdio_read_mode1_sectors (cdio, _dirbuf, stat->lsn, false,
|
||
stat->secsize))
|
||
cdio_assert_not_reached ();
|
||
}
|
||
|
||
while (offset < (stat->secsize * ISO_BLOCKSIZE))
|
||
{
|
||
const iso9660_dir_t *iso9660_dir = (void *) &_dirbuf[offset];
|
||
iso9660_stat_t *iso9660_stat;
|
||
|
||
if (!iso9660_get_dir_len(iso9660_dir))
|
||
{
|
||
offset++;
|
||
continue;
|
||
}
|
||
|
||
iso9660_stat = _iso9660_dir_to_statbuf(iso9660_dir, is_mode2);
|
||
_cdio_list_append (retval, iso9660_stat);
|
||
|
||
offset += iso9660_get_dir_len(iso9660_dir);
|
||
}
|
||
|
||
cdio_assert (offset == (stat->secsize * ISO_BLOCKSIZE));
|
||
|
||
free (_dirbuf);
|
||
free (stat);
|
||
return retval;
|
||
}
|
||
}
|
||
|
||
/*!
|
||
Read pathname (a directory) and return a list of iso9660_stat_t
|
||
of the files inside that. The caller must free the returned result.
|
||
*/
|
||
CdioList *
|
||
iso9660_ifs_readdir (iso9660_t *iso, const char pathname[])
|
||
{
|
||
iso9660_stat_t *stat;
|
||
|
||
if (NULL == iso) return NULL;
|
||
if (NULL == pathname) return NULL;
|
||
|
||
stat = iso9660_ifs_stat (iso, pathname);
|
||
if (NULL == stat) return NULL;
|
||
|
||
if (stat->type != _STAT_DIR) {
|
||
free(stat);
|
||
return NULL;
|
||
}
|
||
|
||
{
|
||
long int ret;
|
||
unsigned offset = 0;
|
||
uint8_t *_dirbuf = NULL;
|
||
CdioList *retval = _cdio_list_new ();
|
||
|
||
if (stat->size != ISO_BLOCKSIZE * stat->secsize)
|
||
{
|
||
cdio_warn ("bad size for ISO9660 directory (%ud) should be (%lu)!",
|
||
(unsigned) stat->size,
|
||
(unsigned long int) ISO_BLOCKSIZE * stat->secsize);
|
||
}
|
||
|
||
_dirbuf = _cdio_malloc (stat->secsize * ISO_BLOCKSIZE);
|
||
|
||
ret = iso9660_iso_seek_read (iso, _dirbuf, stat->lsn, stat->secsize);
|
||
if (ret != ISO_BLOCKSIZE*stat->secsize) return NULL;
|
||
|
||
while (offset < (stat->secsize * ISO_BLOCKSIZE))
|
||
{
|
||
const iso9660_dir_t *iso9660_dir = (void *) &_dirbuf[offset];
|
||
iso9660_stat_t *iso9660_stat;
|
||
|
||
if (!iso9660_get_dir_len(iso9660_dir))
|
||
{
|
||
offset++;
|
||
continue;
|
||
}
|
||
|
||
iso9660_stat = _iso9660_dir_to_statbuf(iso9660_dir, true);
|
||
_cdio_list_append (retval, iso9660_stat);
|
||
|
||
offset += iso9660_get_dir_len(iso9660_dir);
|
||
}
|
||
|
||
cdio_assert (offset == (stat->secsize * ISO_BLOCKSIZE));
|
||
|
||
free (_dirbuf);
|
||
free (stat);
|
||
return retval;
|
||
}
|
||
}
|
||
|
||
static iso9660_stat_t *
|
||
find_fs_lsn_recurse (const CdIo *cdio, const char pathname[], lsn_t lsn)
|
||
{
|
||
CdioList *entlist = iso9660_fs_readdir (cdio, pathname, true);
|
||
CdioList *dirlist = _cdio_list_new ();
|
||
CdioListNode *entnode;
|
||
|
||
cdio_assert (entlist != NULL);
|
||
|
||
/* iterate over each entry in the directory */
|
||
|
||
_CDIO_LIST_FOREACH (entnode, entlist)
|
||
{
|
||
iso9660_stat_t *statbuf = _cdio_list_node_data (entnode);
|
||
char _fullname[4096] = { 0, };
|
||
char *filename = (char *) statbuf->filename;
|
||
|
||
snprintf (_fullname, sizeof (_fullname), "%s%s", pathname, filename);
|
||
|
||
strncat (_fullname, "/", sizeof (_fullname));
|
||
|
||
if (statbuf->type == _STAT_DIR
|
||
&& strcmp ((char *) statbuf->filename, ".")
|
||
&& strcmp ((char *) statbuf->filename, ".."))
|
||
_cdio_list_append (dirlist, strdup (_fullname));
|
||
|
||
if (statbuf->lsn == lsn) {
|
||
unsigned int len=sizeof(iso9660_stat_t)+strlen(statbuf->filename)+1;
|
||
iso9660_stat_t *ret_stat = _cdio_malloc(len);
|
||
memcpy(ret_stat, statbuf, len);
|
||
_cdio_list_free (entlist, true);
|
||
_cdio_list_free (dirlist, true);
|
||
return ret_stat;
|
||
}
|
||
|
||
}
|
||
|
||
_cdio_list_free (entlist, true);
|
||
|
||
/* now recurse/descend over directories encountered */
|
||
|
||
_CDIO_LIST_FOREACH (entnode, dirlist)
|
||
{
|
||
char *_fullname = _cdio_list_node_data (entnode);
|
||
iso9660_stat_t *ret_stat = find_fs_lsn_recurse (cdio, _fullname, lsn);
|
||
|
||
if (NULL != ret_stat) {
|
||
_cdio_list_free (dirlist, true);
|
||
return ret_stat;
|
||
}
|
||
}
|
||
|
||
_cdio_list_free (dirlist, true);
|
||
return NULL;
|
||
}
|
||
|
||
/*!
|
||
Given a directory pointer, find the filesystem entry that contains
|
||
lsn and return information about it.
|
||
|
||
Returns stat_t of entry if we found lsn, or NULL otherwise.
|
||
*/
|
||
iso9660_stat_t *
|
||
iso9660_find_fs_lsn(const CdIo *cdio, lsn_t lsn)
|
||
{
|
||
return find_fs_lsn_recurse (cdio, "/", lsn);
|
||
}
|
||
|
||
/*!
|
||
Return true if ISO 9660 image has extended attrributes (XA).
|
||
*/
|
||
bool
|
||
iso9660_ifs_is_xa (const iso9660_t * p_iso)
|
||
{
|
||
if (!p_iso) return false;
|
||
return p_iso->b_xa;
|
||
}
|
||
|
||
|