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ext2_init() fails if device is not an ext2 filesystem

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This commit is contained in:
Laurent Vivier 2008-08-12 23:36:12 +00:00
parent 4e79c0b645
commit be678577f6
1 changed files with 14 additions and 0 deletions
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14
libext2/ext2_init.c
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@ -5,9 +5,23 @@
*/
#include "libext2.h"
#include "ext2.h"
#include "ext2_utils.h"
static int is_ext2(device_io_t *device)
{
struct ext2_super_block super;
ext2_get_super(device, &super);
if (super.s_magic == EXT2_SUPER_MAGIC)
return 1;
return 0;
}
int ext2_init(device_io_t *device, filesystem_io_t *fs)
{
if (!is_ext2(device))
return -1;
fs->mount = ext2_mount;
fs->open = ext2_open;
fs->read = ext2_read;