86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*-
|
|
* Copyright (c) 2005 Stanislav Sedov
|
|
* Copyright (c) 2014 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Edward Tomasz Napierala under sponsorship
|
|
* from the FreeBSD Foundation.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "fstyp.h"
|
|
|
|
#define EXT2FS_SB_OFFSET 1024
|
|
#define EXT2_SUPER_MAGIC 0xef53
|
|
#define EXT2_DYNAMIC_REV 1
|
|
|
|
typedef struct e2sb {
|
|
uint8_t fake1[56];
|
|
uint16_t s_magic;
|
|
uint8_t fake2[18];
|
|
uint32_t s_rev_level;
|
|
uint8_t fake3[40];
|
|
char s_volume_name[16];
|
|
} e2sb_t;
|
|
|
|
int
|
|
fstyp_ext2fs(FILE *fp, char *label, size_t size)
|
|
{
|
|
e2sb_t *fs;
|
|
char *s_volume_name;
|
|
|
|
fs = (e2sb_t *)read_buf(fp, EXT2FS_SB_OFFSET, 512);
|
|
if (fs == NULL)
|
|
return (1);
|
|
|
|
/* Check for magic and versio n*/
|
|
if (fs->s_magic == EXT2_SUPER_MAGIC &&
|
|
fs->s_rev_level == EXT2_DYNAMIC_REV) {
|
|
//G_LABEL_DEBUG(1, "ext2fs file system detected on %s.",
|
|
// pp->name);
|
|
} else {
|
|
free(fs);
|
|
return (1);
|
|
}
|
|
|
|
s_volume_name = fs->s_volume_name;
|
|
/* Terminate label */
|
|
s_volume_name[sizeof(fs->s_volume_name) - 1] = '\0';
|
|
|
|
if (s_volume_name[0] == '/')
|
|
s_volume_name += 1;
|
|
|
|
strlcpy(label, s_volume_name, size);
|
|
free(fs);
|
|
|
|
return (0);
|
|
}
|