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udf: Promote some debugging messages to udf_error

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If there is a problem with a scratched disc or loader, it's valuable to know
which error occurred.

Convert some debug messages to udf_error, neaten those messages too.
Add the calculated tag checksum and the read checksum to error message.
Make udf_error a public function and move the logging prototypes together.

Original-patch-by: NamJae Jeon <linkinjeon@gmail.com>
Reviewed-by: NamJae Jeon <linkinjeon@gmail.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Joe Perches
2011-10-10 01:08:02 -07:00
committed by Jan Kara
parent 40bfa16dac
commit 7e273e3b41
3 changed files with 18 additions and 10 deletions
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13
fs/udf/misc.c
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@@ -204,6 +204,7 @@ struct buffer_head *udf_read_tagged(struct super_block *sb, uint32_t block,
{
struct tag *tag_p;
struct buffer_head *bh = NULL;
u8 checksum;
/* Read the block */
if (block == 0xFFFFFFFF)
@@ -211,7 +212,7 @@ struct buffer_head *udf_read_tagged(struct super_block *sb, uint32_t block,
bh = udf_tread(sb, block);
if (!bh) {
udf_debug("block=%d, location=%d: read failed\n",
udf_error(sb, __func__, "read failed, block=%u, location=%d\n",
block, location);
return NULL;
}
@@ -227,15 +228,19 @@ struct buffer_head *udf_read_tagged(struct super_block *sb, uint32_t block,
}
/* Verify the tag checksum */
if (udf_tag_checksum(tag_p) != tag_p->tagChecksum) {
printk(KERN_ERR "udf: tag checksum failed block %d\n", block);
checksum = udf_tag_checksum(tag_p);
if (checksum != tag_p->tagChecksum) {
udf_error(sb, __func__,
"tag checksum failed, block %u: 0x%02x != 0x%02x\n",
block, checksum, tag_p->tagChecksum);
goto error_out;
}
/* Verify the tag version */
if (tag_p->descVersion != cpu_to_le16(0x0002U) &&
tag_p->descVersion != cpu_to_le16(0x0003U)) {
udf_debug("tag version 0x%04x != 0x0002 || 0x0003 block %d\n",
udf_error(sb, __func__,
"tag version 0x%04x != 0x0002 || 0x0003, block %u\n",
le16_to_cpu(tag_p->descVersion), block);
goto error_out;
}