claunia/libcdio-osx
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Add const's where possible.

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Add cdio mode2 read routine.
This commit is contained in:
rocky
2004-06-19 02:27:19 +00:00
parent a3de80d0ae
commit 3109e2935d
3 changed files with 53 additions and 19 deletions
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48
lib/iso9660_fs.c
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@@ -1,5 +1,5 @@
/*
$Id: iso9660_fs.c,v 1.21 2004/06/19 00:15:44 rocky Exp $
$Id: iso9660_fs.c,v 1.22 2004/06/19 02:27:20 rocky Exp $
Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org>
Copyright (C) 2003, 2004 Rocky Bernstein <rocky@panix.com>
@@ -40,7 +40,7 @@
#include <stdio.h>
static const char _rcsid[] = "$Id: iso9660_fs.c,v 1.21 2004/06/19 00:15:44 rocky Exp $";
static const char _rcsid[] = "$Id: iso9660_fs.c,v 1.22 2004/06/19 02:27:20 rocky Exp $";
/* Implementation of iso9660_t type */
struct _iso9660 {
@@ -85,16 +85,9 @@ iso9660_close (iso9660_t *p_iso)
return true;
}
/*!
Read the Primary Volume Descriptor for an ISO 9660 image.
*/
bool iso9660_ifs_read_pvd (iso9660_t *p_iso, iso9660_pvd_t *p_pvd)
static bool
check_pvd (const iso9660_pvd_t *p_pvd)
{
if (0 == iso9660_iso_seek_read (p_iso, p_pvd, ISO_PVD_SECTOR, 1)) {
cdio_warn ("error reading PVD sector (%d)", ISO_PVD_SECTOR);
return false;
}
if (p_pvd->type != ISO_VD_PRIMARY) {
cdio_warn ("unexpected PVD type %d", p_pvd->type);
return false;
@@ -109,11 +102,42 @@ iso9660_close (iso9660_t *p_iso)
return true;
}
/*!
Read the Primary Volume Descriptor for an ISO 9660 image.
*/
bool
iso9660_ifs_read_pvd (const iso9660_t *p_iso, /*out*/ iso9660_pvd_t *p_pvd)
{
if (0 == iso9660_iso_seek_read (p_iso, p_pvd, ISO_PVD_SECTOR, 1)) {
cdio_warn ("error reading PVD sector (%d)", ISO_PVD_SECTOR);
return false;
}
return check_pvd(p_pvd);
}
/*!
Read the Primary Volume Descriptor for of CD.
*/
bool
iso9660_fs_read_mode2_pvd(const CdIo *cdio, /*out*/ iso9660_pvd_t *p_pvd,
bool b_form2)
{
if (cdio_read_mode2_sector (cdio, p_pvd, ISO_PVD_SECTOR, b_form2)) {
cdio_warn ("error reading PVD sector (%d)", ISO_PVD_SECTOR);
return false;
}
return check_pvd(p_pvd);
}
/*!
Seek to a position and then read n blocks. Size read is returned.
*/
long int
iso9660_iso_seek_read (iso9660_t *p_iso, void *ptr, lsn_t start, long int size)
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;