X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=extras%2Fvolume_id%2Fvolume_id%2Freiserfs.c;h=75d1be05dc2c54dfaaf54a0a37852eca690028a6;hb=a3f129d054395019d4b2385dede233eb12425c78;hp=b74b8ae5760bb2d64713bedeff35017e8140b350;hpb=e4d4a557e53c3fbcf14bd1bb29686fd884905b53;p=elogind.git

diff --git a/extras/volume_id/volume_id/reiserfs.c b/extras/volume_id/volume_id/reiserfs.c
index b74b8ae57..75d1be05d 100644
--- a/extras/volume_id/volume_id/reiserfs.c
+++ b/extras/volume_id/volume_id/reiserfs.c
@@ -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
@@ -40,41 +41,64 @@
 #include "reiserfs.h"
 
 struct reiserfs_super_block {
-	__u32	blocks_count;
-	__u32	free_blocks;
-	__u32	root_block;
-	__u32	journal_block;
-	__u32	journal_dev;
-	__u32	orig_journal_size;
-	__u32	dummy2[5];
-	__u16	blocksize;
-	__u16	dummy3[3];
-	__u8	magic[12];
-	__u32	dummy4[5];
-	__u8	uuid[16];
-	__u8	label[16];
+	uint32_t	blocks_count;
+	uint32_t	free_blocks;
+	uint32_t	root_block;
+	uint32_t	journal_block;
+	uint32_t	journal_dev;
+	uint32_t	orig_journal_size;
+	uint32_t	dummy2[5];
+	uint16_t	blocksize;
+	uint16_t	dummy3[3];
+	uint8_t		magic[12];
+	uint32_t	dummy4[5];
+	uint8_t		uuid[16];
+	uint8_t		label[16];
+} __attribute__((__packed__));
+
+struct reiser4_super_block {
+	uint8_t		magic[16];
+	uint16_t	dummy[2];
+	uint8_t		uuid[16];
+	uint8_t		label[16];
+	uint64_t	dummy2;
 } __attribute__((__packed__));
 
 #define REISERFS1_SUPERBLOCK_OFFSET		0x2000
 #define REISERFS_SUPERBLOCK_OFFSET		0x10000
 
-int volume_id_probe_reiserfs(struct volume_id *id, __u64 off)
+int volume_id_probe_reiserfs(struct volume_id *id, uint64_t off)
 {
 	struct reiserfs_super_block *rs;
+	struct reiser4_super_block *rs4;
+	uint8_t	 *buf;
 
-	dbg("probing at offset %llu", off);
+	dbg("probing at offset 0x%llx", (unsigned long long) 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, "ReIsErFs", 8) == 0) {
+		strcpy(id->type_version, "3.5");
+		goto found;
+	}
 	if (memcmp(rs->magic, "ReIsEr2Fs", 9) == 0) {
 		strcpy(id->type_version, "3.6");
-		goto found;
+		goto found_label;
 	}
-
 	if (memcmp(rs->magic, "ReIsEr3Fs", 9) == 0) {
 		strcpy(id->type_version, "JR");
+		goto found_label;
+	}
+
+	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;
 	}
 
@@ -89,11 +113,12 @@ int volume_id_probe_reiserfs(struct volume_id *id, __u64 off)
 
 	return -1;
 
-found:
+found_label:
 	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";