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volume_id: add squashfs detection

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This commit is contained in:
Kay Sievers 2006-03-08 19:44:28 +01:00
parent b2885eeecf
commit 2f567dd62e
4 changed files with 59 additions and 1 deletions
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1
extras/volume_id/libvolume_id/Makefile
View File

@ -38,6 +38,7 @@ OBJS= \
luks.o \
ocfs.o \
vxfs.o \
squashfs.o \
volume_id.o \
util.o

53
extras/volume_id/libvolume_id/squashfs.c Normal file
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@ -0,0 +1,53 @@
/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2006 Kay Sievers <kay.sievers@vrfy.org>
*
* 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 version 2 of the License.
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "volume_id.h"
#include "logging.h"
#include "util.h"
#define SQUASHFS_MAGIC 0x73717368
struct squashfs_super {
uint32_t s_magic;
} PACKED;
int volume_id_probe_squashfs(struct volume_id *id, uint64_t off)
{
struct squashfs_super *sqs;
dbg("probing at offset 0x%llx", (unsigned long long) off);
sqs = (struct squashfs_super *) volume_id_get_buffer(id, off + 0x200, 0x200);
if (sqs == NULL)
return -1;
if (sqs->s_magic == SQUASHFS_MAGIC || sqs->s_magic == bswap_32(SQUASHFS_MAGIC)) {
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "squashfs";
return 0;
}
return -1;
}

3
extras/volume_id/libvolume_id/volume_id.c
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@ -149,6 +149,9 @@ int volume_id_probe_filesystem(struct volume_id *id, uint64_t off, uint64_t size
if (volume_id_probe_vxfs(id, off) == 0)
goto found;
if (volume_id_probe_squashfs(id, off) == 0)
goto found;
return -1;
found:

3
extras/volume_id/libvolume_id/volume_id.h
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@ -14,7 +14,7 @@
#include <stdint.h>
#include <stddef.h>
#define VOLUME_ID_VERSION 58
#define VOLUME_ID_VERSION 59
#ifndef PACKED
#define PACKED __attribute__((packed))
@ -96,6 +96,7 @@ extern int volume_id_probe_udf(struct volume_id *id, uint64_t off);
extern int volume_id_probe_ufs(struct volume_id *id, uint64_t off);
extern int volume_id_probe_vxfs(struct volume_id *id, uint64_t off);
extern int volume_id_probe_xfs(struct volume_id *id, uint64_t off);
extern int volume_id_probe_squashfs(struct volume_id *id, uint64_t off);
/* special formats */
extern int volume_id_probe_linux_swap(struct volume_id *id, uint64_t off);