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-rw-r--r--fs/hfsplus/hfsplus_fs.h1
-rw-r--r--fs/hfsplus/hfsplus_raw.h12
-rw-r--r--fs/hfsplus/options.c6
-rw-r--r--fs/hfsplus/super.c20
4 files changed, 33 insertions, 6 deletions
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index c60e5635498..df16fcbff3f 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -151,6 +151,7 @@ struct hfsplus_sb_info {
#define HFSPLUS_SB_WRITEBACKUP 0x0001
#define HFSPLUS_SB_NODECOMPOSE 0x0002
+#define HFSPLUS_SB_FORCE 0x0004
struct hfsplus_inode_info {
diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h
index 5bad37cfdb2..b4fbed63321 100644
--- a/fs/hfsplus/hfsplus_raw.h
+++ b/fs/hfsplus/hfsplus_raw.h
@@ -123,11 +123,13 @@ struct hfsplus_vh {
} __packed;
/* HFS+ volume attributes */
-#define HFSPLUS_VOL_UNMNT (1 << 8)
-#define HFSPLUS_VOL_SPARE_BLK (1 << 9)
-#define HFSPLUS_VOL_NOCACHE (1 << 10)
-#define HFSPLUS_VOL_INCNSTNT (1 << 11)
-#define HFSPLUS_VOL_SOFTLOCK (1 << 15)
+#define HFSPLUS_VOL_UNMNT (1 << 8)
+#define HFSPLUS_VOL_SPARE_BLK (1 << 9)
+#define HFSPLUS_VOL_NOCACHE (1 << 10)
+#define HFSPLUS_VOL_INCNSTNT (1 << 11)
+#define HFSPLUS_VOL_NODEID_REUSED (1 << 12)
+#define HFSPLUS_VOL_JOURNALED (1 << 13)
+#define HFSPLUS_VOL_SOFTLOCK (1 << 15)
/* HFS+ BTree node descriptor */
struct hfs_bnode_desc {
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index cca0818aa4c..935dafba007 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -22,7 +22,7 @@ enum {
opt_umask, opt_uid, opt_gid,
opt_part, opt_session, opt_nls,
opt_nodecompose, opt_decompose,
- opt_err
+ opt_force, opt_err
};
static match_table_t tokens = {
@@ -36,6 +36,7 @@ static match_table_t tokens = {
{ opt_nls, "nls=%s" },
{ opt_decompose, "decompose" },
{ opt_nodecompose, "nodecompose" },
+ { opt_force, "force" },
{ opt_err, NULL }
};
@@ -145,6 +146,9 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
case opt_nodecompose:
sbi->flags |= HFSPLUS_SB_NODECOMPOSE;
break;
+ case opt_force:
+ sbi->flags |= HFSPLUS_SB_FORCE;
+ break;
default:
return 0;
}
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 0ce1c455ae5..8093351bd7c 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -251,16 +251,28 @@ static int hfsplus_remount(struct super_block *sb, int *flags, char *data)
return 0;
if (!(*flags & MS_RDONLY)) {
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
+ struct hfsplus_sb_info sbi;
+
+ memset(&sbi, 0, sizeof(struct hfsplus_sb_info));
+ sbi.nls = HFSPLUS_SB(sb).nls;
+ if (!hfsplus_parse_options(data, &sbi))
+ return -EINVAL;
if (!(vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_UNMNT))) {
printk("HFS+-fs warning: Filesystem was not cleanly unmounted, "
"running fsck.hfsplus is recommended. leaving read-only.\n");
sb->s_flags |= MS_RDONLY;
*flags |= MS_RDONLY;
+ } else if (sbi.flags & HFSPLUS_SB_FORCE) {
+ /* nothing */
} else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
printk("HFS+-fs: Filesystem is marked locked, leaving read-only.\n");
sb->s_flags |= MS_RDONLY;
*flags |= MS_RDONLY;
+ } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_JOURNALED)) {
+ printk("HFS+-fs: Filesystem is marked journaled, leaving read-only.\n");
+ sb->s_flags |= MS_RDONLY;
+ *flags |= MS_RDONLY;
}
}
return 0;
@@ -352,11 +364,19 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
printk("HFS+-fs warning: Filesystem was not cleanly unmounted, "
"running fsck.hfsplus is recommended. mounting read-only.\n");
sb->s_flags |= MS_RDONLY;
+ } else if (sbi->flags & HFSPLUS_SB_FORCE) {
+ /* nothing */
} else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
if (!silent)
printk("HFS+-fs: Filesystem is marked locked, mounting read-only.\n");
sb->s_flags |= MS_RDONLY;
+ } else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_JOURNALED)) {
+ if (!silent)
+ printk("HFS+-fs: write access to a jounaled filesystem is not supported, "
+ "use the force option at your own risk, mounting read-only.\n");
+ sb->s_flags |= MS_RDONLY;
}
+ sbi->flags &= ~HFSPLUS_SB_FORCE;
/* Load metadata objects (B*Trees) */
HFSPLUS_SB(sb).ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID);