claunia/libcdio-osx
Archived
1
0
Fork 0
Code Issues 2 Pull Requests Actions Packages Projects Releases Wiki Activity

Move ISO-9660 lsn-finding routine from vcdimager here.

Browse Source 
More prototypes are "const CdIo *".
This commit is contained in:
rocky
2003-09-05 22:48:16 +00:00
parent 2c051a3666
commit 6d186dbb0e
4 changed files with 126 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

107
lib/iso9660_fs.c
View File

@@ -1,5 +1,5 @@
/*
$Id: iso9660_fs.c,v 1.5 2003/08/31 15:52:56 rocky Exp $
$Id: iso9660_fs.c,v 1.6 2003/09/05 22:48:16 rocky Exp $
Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org>
Copyright (C) 2003 Rocky Bernstein <rocky@panix.com>
@@ -36,7 +36,9 @@
#include "bytesex.h"
#include "ds.h"
static const char _rcsid[] = "$Id: iso9660_fs.c,v 1.5 2003/08/31 15:52:56 rocky Exp $";
#include <stdio.h>
static const char _rcsid[] = "$Id: iso9660_fs.c,v 1.6 2003/09/05 22:48:16 rocky Exp $";
static void
_idr2statbuf (const iso9660_dir_t *idr, iso9660_stat_t *buf, bool is_mode2)
@@ -108,17 +110,17 @@ _idr2name (const iso9660_dir_t *idr)
static void
_fs_stat_root (CdIo *obj, iso9660_stat_t *buf, bool is_mode2)
_fs_stat_root (const CdIo *cdio, iso9660_stat_t *buf, bool is_mode2)
{
char block[ISO_BLOCKSIZE] = { 0, };
const iso9660_pvd_t *pvd = (void *) &block;
const iso9660_dir_t *idr = (void *) pvd->root_directory_record;
if (is_mode2) {
if (cdio_read_mode2_sector (obj, &block, ISO_PVD_SECTOR, false))
if (cdio_read_mode2_sector (cdio, &block, ISO_PVD_SECTOR, false))
cdio_assert_not_reached ();
} else {
if (cdio_read_mode1_sector (obj, &block, ISO_PVD_SECTOR, false))
if (cdio_read_mode1_sector (cdio, &block, ISO_PVD_SECTOR, false))
cdio_assert_not_reached ();
}
@@ -126,8 +128,8 @@ _fs_stat_root (CdIo *obj, iso9660_stat_t *buf, bool is_mode2)
}
static int
_fs_stat_traverse (CdIo *obj, const iso9660_stat_t *_root, char **splitpath,
iso9660_stat_t *buf, bool is_mode2)
_fs_stat_traverse (const CdIo *cdio, const iso9660_stat_t *_root,
char **splitpath, iso9660_stat_t *buf, bool is_mode2)
{
unsigned offset = 0;
uint8_t *_dirbuf = NULL;
@@ -152,11 +154,11 @@ _fs_stat_traverse (CdIo *obj, const iso9660_stat_t *_root, char **splitpath,
_dirbuf = _cdio_malloc (_root->secsize * ISO_BLOCKSIZE);
if (is_mode2) {
if (cdio_read_mode2_sectors (obj, _dirbuf, _root->lsn, false,
if (cdio_read_mode2_sectors (cdio, _dirbuf, _root->lsn, false,
_root->secsize))
cdio_assert_not_reached ();
} else {
if (cdio_read_mode1_sectors (obj, _dirbuf, _root->lsn, false,
if (cdio_read_mode1_sectors (cdio, _dirbuf, _root->lsn, false,
_root->secsize))
cdio_assert_not_reached ();
}
@@ -180,7 +182,7 @@ _fs_stat_traverse (CdIo *obj, const iso9660_stat_t *_root, char **splitpath,
if (!strcmp (splitpath[0], _name))
{
int retval = _fs_stat_traverse (obj, &_stat, &splitpath[1], buf,
int retval = _fs_stat_traverse (cdio, &_stat, &splitpath[1], buf,
is_mode2);
free (_name);
free (_dirbuf);
@@ -200,35 +202,35 @@ _fs_stat_traverse (CdIo *obj, const iso9660_stat_t *_root, char **splitpath,
}
int
iso9660_fs_stat (CdIo *obj, const char pathname[], iso9660_stat_t *buf,
iso9660_fs_stat (const CdIo *cdio, const char pathname[], iso9660_stat_t *buf,
bool is_mode2)
{
iso9660_stat_t _root;
int retval;
char **splitpath;
cdio_assert (obj != NULL);
cdio_assert (cdio != NULL);
cdio_assert (pathname != NULL);
cdio_assert (buf != NULL);
_fs_stat_root (obj, &_root, is_mode2);
_fs_stat_root (cdio, &_root, is_mode2);
splitpath = _cdio_strsplit (pathname, '/');
retval = _fs_stat_traverse (obj, &_root, splitpath, buf, is_mode2);
retval = _fs_stat_traverse (cdio, &_root, splitpath, buf, is_mode2);
_cdio_strfreev (splitpath);
return retval;
}
void * /* list of char* -- caller must free it */
iso9660_fs_readdir (CdIo *obj, const char pathname[], bool is_mode2)
iso9660_fs_readdir (const CdIo *cdio, const char pathname[], bool is_mode2)
{
iso9660_stat_t _stat;
cdio_assert (obj != NULL);
cdio_assert (cdio != NULL);
cdio_assert (pathname != NULL);
if (iso9660_fs_stat (obj, pathname, &_stat, is_mode2))
if (iso9660_fs_stat (cdio, pathname, &_stat, is_mode2))
return NULL;
if (_stat.type != _STAT_DIR)
@@ -248,11 +250,11 @@ iso9660_fs_readdir (CdIo *obj, const char pathname[], bool is_mode2)
_dirbuf = _cdio_malloc (_stat.secsize * ISO_BLOCKSIZE);
if (is_mode2) {
if (cdio_read_mode2_sectors (obj, _dirbuf, _stat.lsn, false,
if (cdio_read_mode2_sectors (cdio, _dirbuf, _stat.lsn, false,
_stat.secsize))
cdio_assert_not_reached ();
} else {
if (cdio_read_mode1_sectors (obj, _dirbuf, _stat.lsn, false,
if (cdio_read_mode1_sectors (cdio, _dirbuf, _stat.lsn, false,
_stat.secsize))
cdio_assert_not_reached ();
}
@@ -279,3 +281,70 @@ iso9660_fs_readdir (CdIo *obj, const char pathname[], bool is_mode2)
}
}
static bool
find_fs_lsn_recurse (const CdIo *cdio, const char pathname[],
/*out*/ iso9660_stat_t *statbuf, 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)
{
char *_name = _cdio_list_node_data (entnode);
char _fullname[4096] = { 0, };
snprintf (_fullname, sizeof (_fullname), "%s%s", pathname, _name);
if (iso9660_fs_stat (cdio, _fullname, statbuf, true))
cdio_assert_not_reached ();
strncat (_fullname, "/", sizeof (_fullname));
if (statbuf->type == _STAT_DIR
&& strcmp (_name, ".")
&& strcmp (_name, ".."))
_cdio_list_append (dirlist, strdup (_fullname));
if (statbuf->lsn == lsn) {
_cdio_list_free (entlist, true);
_cdio_list_free (dirlist, true);
return true;
}
}
_cdio_list_free (entlist, true);
/* now recurse/descend over directories encountered */
_CDIO_LIST_FOREACH (entnode, dirlist)
{
char *_fullname = _cdio_list_node_data (entnode);
if (find_fs_lsn_recurse (cdio, _fullname, statbuf, lsn)) {
_cdio_list_free (dirlist, true);
return true;
}
}
_cdio_list_free (dirlist, true);
return false;
}
/*!
Given a directory pointer, find the filesystem entry that contains
lsn and return information about it in stat.
Returns true if we found an entry with the lsn and false if not.
*/
bool
iso9660_find_fs_lsn(const CdIo *cdio, lsn_t lsn, /*out*/ iso9660_stat_t *stat)
{
return find_fs_lsn_recurse (cdio, "/", stat, lsn);
}