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[PATCH] udev_volume_id: add Reiser4 support

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tklauser@access.unizh.ch 2005-02-23 04:35:26 +01:00 committed by Greg KH
parent e4d4a557e5
commit 8d1b4df219
2 changed files with 28 additions and 7 deletions
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33
extras/volume_id/volume_id/reiserfs.c
View File

@ -2,6 +2,7 @@
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
* Copyright (C) 2005 Tobias Klauser <tklauser@access.unizh.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -55,26 +56,45 @@ struct reiserfs_super_block {
__u8 label[16];
} __attribute__((__packed__));
struct reiser4_super_block {
__u8 magic[16];
__u16 dummy[2];
__u8 uuid[16];
__u8 label[16];
__u64 dummy2;
} __attribute__((__packed__));
#define REISERFS1_SUPERBLOCK_OFFSET 0x2000
#define REISERFS_SUPERBLOCK_OFFSET 0x10000
int volume_id_probe_reiserfs(struct volume_id *id, __u64 off)
{
struct reiserfs_super_block *rs;
struct reiser4_super_block *rs4;
__u8 *buf;
dbg("probing at offset %llu", off);
rs = (struct reiserfs_super_block *) volume_id_get_buffer(id, off + REISERFS_SUPERBLOCK_OFFSET, 0x200);
if (rs == NULL)
buf = volume_id_get_buffer(id, off + REISERFS_SUPERBLOCK_OFFSET, 0x200);
if (buf == NULL)
return -1;
rs = (struct reiserfs_super_block *) buf;;
if (memcmp(rs->magic, "ReIsEr2Fs", 9) == 0) {
strcpy(id->type_version, "3.6");
goto found;
goto found_v3;
}
if (memcmp(rs->magic, "ReIsEr3Fs", 9) == 0) {
strcpy(id->type_version, "JR");
goto found_v3;
}
rs4 = (struct reiser4_super_block *) buf;
if (memcmp(rs4->magic, "ReIsEr4", 7) == 0) {
strcpy(id->type_version, "4");
volume_id_set_label_raw(id, rs4->label, 16);
volume_id_set_label_string(id, rs4->label, 16);
volume_id_set_uuid(id, rs4->uuid, UUID_DCE);
goto found;
}
@ -84,16 +104,17 @@ int volume_id_probe_reiserfs(struct volume_id *id, __u64 off)
if (memcmp(rs->magic, "ReIsErFs", 8) == 0) {
strcpy(id->type_version, "3.5");
goto found;
goto found_v3;
}
return -1;
found:
found_v3:
volume_id_set_label_raw(id, rs->label, 16);
volume_id_set_label_string(id, rs->label, 16);
volume_id_set_uuid(id, rs->uuid, UUID_DCE);
found:
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
id->type = "reiserfs";

2
extras/volume_id/volume_id/volume_id.h
View File

@ -21,7 +21,7 @@
#ifndef _VOLUME_ID_H_
#define _VOLUME_ID_H_
#define VOLUME_ID_VERSION 35
#define VOLUME_ID_VERSION 36
#define VOLUME_ID_LABEL_SIZE 64
#define VOLUME_ID_UUID_SIZE 16