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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2009-06-29 18:59:23 +0400 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2009-07-09 10:19:38 +0400 |
| commit | ed43f2f06cc1cec7ec2dc235c908530bc8c796eb (patch) | |
| tree | 7d178c64dc5a758487cc0fca834c4ab42e62febc /fs/ubifs/scan.c | |
| parent | 086b3640c10ab448a6993c4bae1508f496f530c4 (diff) | |
| download | linux-ed43f2f06cc1cec7ec2dc235c908530bc8c796eb.tar.xz | |
UBIFS: small amendments in the LEB scanning code
This patch fixes few minor things I've spotted while going through
code:
1. Better document return codes
2. If 'ubifs_scan_a_node()' returns some thing we do not expect,
treat this as an error.
3. Try to do recovery only when 'ubifs_scan()' returns %-EUCLEAN,
not on any error.
4. If empty space starts at a non-aligned address, print a message.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
Diffstat (limited to 'fs/ubifs/scan.c')
| -rw-r--r-- | fs/ubifs/scan.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/fs/ubifs/scan.c b/fs/ubifs/scan.c index 165c14ba1a46..892ebfee4fe5 100644 --- a/fs/ubifs/scan.c +++ b/fs/ubifs/scan.c @@ -256,7 +256,9 @@ void ubifs_scanned_corruption(const struct ubifs_info *c, int lnum, int offs, * @sbuf: scan buffer (must be c->leb_size) * * This function scans LEB number @lnum and returns complete information about - * its contents. Returns an error code in case of failure. + * its contents. Returns the scaned information in case of success and, + * %-EUCLEAN if the LEB neads recovery, and other negative error codes in case + * of failure. */ struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum, int offs, void *sbuf) @@ -279,7 +281,6 @@ struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum, cond_resched(); ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 0); - if (ret > 0) { /* Padding bytes or a valid padding node */ offs += ret; @@ -304,7 +305,8 @@ struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum, goto corrupted; default: dbg_err("unknown"); - goto corrupted; + err = -EINVAL; + goto error; } err = ubifs_add_snod(c, sleb, buf, offs); @@ -317,8 +319,10 @@ struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum, len -= node_len; } - if (offs % c->min_io_size) - goto corrupted; + if (offs % c->min_io_size) { + ubifs_err("empty space starts at non-aligned offset %d", offs); + goto corrupted;; + } ubifs_end_scan(c, sleb, lnum, offs); |