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-rw-r--r--fs/squashfs/block.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/fs/squashfs/block.c b/fs/squashfs/block.c
index c837dfc2b3c6..2a7960310349 100644
--- a/fs/squashfs/block.c
+++ b/fs/squashfs/block.c
@@ -80,7 +80,7 @@ static struct buffer_head *get_block_length(struct super_block *sb,
* generated a larger block - this does occasionally happen with zlib).
*/
int squashfs_read_data(struct super_block *sb, void **buffer, u64 index,
- int length, u64 *next_index, int srclength)
+ int length, u64 *next_index, int srclength, int pages)
{
struct squashfs_sb_info *msblk = sb->s_fs_info;
struct buffer_head **bh;
@@ -184,7 +184,7 @@ int squashfs_read_data(struct super_block *sb, void **buffer, u64 index,
offset = 0;
}
- if (msblk->stream.avail_out == 0) {
+ if (msblk->stream.avail_out == 0 && page < pages) {
msblk->stream.next_out = buffer[page++];
msblk->stream.avail_out = PAGE_CACHE_SIZE;
}
@@ -201,25 +201,20 @@ int squashfs_read_data(struct super_block *sb, void **buffer, u64 index,
zlib_init = 1;
}
- zlib_err = zlib_inflate(&msblk->stream, Z_NO_FLUSH);
+ zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH);
if (msblk->stream.avail_in == 0 && k < b)
put_bh(bh[k++]);
} while (zlib_err == Z_OK);
if (zlib_err != Z_STREAM_END) {
- ERROR("zlib_inflate returned unexpected result"
- " 0x%x, srclength %d, avail_in %d,"
- " avail_out %d\n", zlib_err, srclength,
- msblk->stream.avail_in,
- msblk->stream.avail_out);
+ ERROR("zlib_inflate error, data probably corrupt\n");
goto release_mutex;
}
zlib_err = zlib_inflateEnd(&msblk->stream);
if (zlib_err != Z_OK) {
- ERROR("zlib_inflateEnd returned unexpected result 0x%x,"
- " srclength %d\n", zlib_err, srclength);
+ ERROR("zlib_inflate error, data probably corrupt\n");
goto release_mutex;
}
length = msblk->stream.total_out;
@@ -268,7 +263,8 @@ block_release:
put_bh(bh[k]);
read_failure:
- ERROR("sb_bread failed reading block 0x%llx\n", cur_index);
+ ERROR("squashfs_read_data failed to read block 0x%llx\n",
+ (unsigned long long) index);
kfree(bh);
return -EIO;
}