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-rw-r--r--fs/udf/super.c70
-rw-r--r--fs/udf/udf_sb.h1
2 files changed, 50 insertions, 21 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 36a467ca162..f8fece43f6c 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -86,7 +86,6 @@ static int udf_remount_fs(struct super_block *, int *, char *);
static int udf_check_valid(struct super_block *, int, int);
static int udf_vrs(struct super_block *sb, int silent);
static void udf_load_logicalvolint(struct super_block *, struct kernel_extent_ad);
-static void udf_find_anchor(struct super_block *);
static int udf_find_fileset(struct super_block *, struct kernel_lb_addr *,
struct kernel_lb_addr *);
static void udf_load_fileset(struct super_block *, struct buffer_head *,
@@ -260,7 +259,7 @@ static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt)
if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT))
seq_puts(seq, ",nostrict");
- if (sb->s_blocksize != UDF_DEFAULT_BLOCKSIZE)
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_BLOCKSIZE_SET))
seq_printf(seq, ",bs=%lu", sb->s_blocksize);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE))
seq_puts(seq, ",unhide");
@@ -416,7 +415,6 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
int option;
uopt->novrs = 0;
- uopt->blocksize = UDF_DEFAULT_BLOCKSIZE;
uopt->partition = 0xFFFF;
uopt->session = 0xFFFFFFFF;
uopt->lastblock = 0;
@@ -444,6 +442,7 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
if (match_int(&args[0], &option))
return 0;
uopt->blocksize = option;
+ uopt->flags |= (1 << UDF_FLAG_BLOCKSIZE_SET);
break;
case Opt_unhide:
uopt->flags |= (1 << UDF_FLAG_UNHIDE);
@@ -789,12 +788,13 @@ static sector_t udf_scan_anchors(struct super_block *sb, sector_t lastblock)
* Return 1 if not found, 0 if ok
*
*/
-static void udf_find_anchor(struct super_block *sb)
+static int udf_find_anchor(struct super_block *sb)
{
sector_t lastblock;
struct buffer_head *bh = NULL;
uint16_t ident;
int i;
+ int anchor_found = 0;
struct udf_sb_info *sbi = UDF_SB(sb);
lastblock = udf_scan_anchors(sb, sbi->s_last_block);
@@ -832,10 +832,13 @@ check_anchor:
brelse(bh);
if (ident != TAG_IDENT_AVDP)
sbi->s_anchor[i] = 0;
+ else
+ anchor_found = 1;
}
}
sbi->s_last_block = lastblock;
+ return anchor_found;
}
static int udf_find_fileset(struct super_block *sb,
@@ -1721,6 +1724,32 @@ static int udf_check_valid(struct super_block *sb, int novrs, int silent)
return !block;
}
+static int udf_check_volume(struct super_block *sb,
+ struct udf_options *uopt, int silent)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+
+ if (!sb_set_blocksize(sb, uopt->blocksize)) {
+ if (!silent)
+ printk(KERN_WARNING "UDF-fs: Bad block size\n");
+ return 0;
+ }
+ sbi->s_last_block = uopt->lastblock;
+ if (udf_check_valid(sb, uopt->novrs, silent)) {
+ if (!silent)
+ printk(KERN_WARNING "UDF-fs: No VRS found\n");
+ return 0;
+ }
+ sbi->s_anchor[0] = sbi->s_anchor[1] = 0;
+ sbi->s_anchor[2] = uopt->anchor;
+ if (!udf_find_anchor(sb)) {
+ if (!silent)
+ printk(KERN_WARNING "UDF-fs: No anchor found\n");
+ return 0;
+ }
+ return 1;
+}
+
static int udf_load_sequence(struct super_block *sb, struct kernel_lb_addr *fileset)
{
struct anchorVolDescPtr *anchor;
@@ -1889,6 +1918,7 @@ static void udf_free_partition(struct udf_part_map *map)
static int udf_fill_super(struct super_block *sb, void *options, int silent)
{
int i;
+ int found_anchor;
struct inode *inode = NULL;
struct udf_options uopt;
struct kernel_lb_addr rootdir, fileset;
@@ -1941,13 +1971,6 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
sbi->s_dmode = uopt.dmode;
sbi->s_nls_map = uopt.nls_map;
- /* Set the block size for all transfers */
- if (!sb_min_blocksize(sb, uopt.blocksize)) {
- udf_debug("Bad block size (%d)\n", uopt.blocksize);
- printk(KERN_ERR "udf: bad block size (%d)\n", uopt.blocksize);
- goto error_out;
- }
-
if (uopt.session == 0xFFFFFFFF)
sbi->s_session = udf_get_last_session(sb);
else
@@ -1955,17 +1978,22 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
udf_debug("Multi-session=%d\n", sbi->s_session);
- sbi->s_last_block = uopt.lastblock;
- sbi->s_anchor[0] = sbi->s_anchor[1] = 0;
- sbi->s_anchor[2] = uopt.anchor;
-
- if (udf_check_valid(sb, uopt.novrs, silent)) {
- /* read volume recognition sequences */
- printk(KERN_WARNING "UDF-fs: No VRS found\n");
- goto error_out;
+ if (uopt.flags & (1 << UDF_FLAG_BLOCKSIZE_SET)) {
+ found_anchor = udf_check_volume(sb, &uopt, silent);
+ } else {
+ uopt.blocksize = bdev_hardsect_size(sb->s_bdev);
+ found_anchor = udf_check_volume(sb, &uopt, silent);
+ if (!found_anchor && uopt.blocksize != UDF_DEFAULT_BLOCKSIZE) {
+ if (!silent)
+ printk(KERN_NOTICE
+ "UDF-fs: Rescanning with blocksize "
+ "%d\n", UDF_DEFAULT_BLOCKSIZE);
+ uopt.blocksize = UDF_DEFAULT_BLOCKSIZE;
+ found_anchor = udf_check_volume(sb, &uopt, silent);
+ }
}
-
- udf_find_anchor(sb);
+ if (!found_anchor)
+ goto error_out;
/* Fill in the rest of the superblock */
sb->s_op = &udf_sb_ops;
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
index 158221ecdc4..2dd92192833 100644
--- a/fs/udf/udf_sb.h
+++ b/fs/udf/udf_sb.h
@@ -30,6 +30,7 @@
#define UDF_FLAG_GID_SET 16
#define UDF_FLAG_SESSION_SET 17
#define UDF_FLAG_LASTBLOCK_SET 18
+#define UDF_FLAG_BLOCKSIZE_SET 19
#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 09:33:36 +0000