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authorColin Leroy <colin@colino.net>2005-05-01 08:59:16 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 08:59:16 -0700
commit945b092011c6af71a0107be96e119c8c08776f3f (patch)
tree7e0d6b79250aa2a5d0b51e9368e89b5f92cfe88e
parent954d3e95369cf73b4bc1e570729f68264a0e6fe0 (diff)
downloadop-kernel-dev-945b092011c6af71a0107be96e119c8c08776f3f.zip
op-kernel-dev-945b092011c6af71a0107be96e119c8c08776f3f.tar.gz
[PATCH] hfs, hfsplus: don't leak s_fs_info and fix an oops
This patch fixes the leak of sb->s_fs_info in both the HFS and HFS+ modules. In addition to this, it fixes an oops happening when trying to mount a non-hfsplus filesystem using hfsplus. This patch is from Roman Zippel, based off patches sent by myself. Signed-off-by: Colin Leroy <colin@colino.net> Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--fs/hfs/mdb.c5
-rw-r--r--fs/hfs/super.c8
-rw-r--r--fs/hfsplus/super.c6
3 files changed, 13 insertions, 6 deletions
diff --git a/fs/hfs/mdb.c b/fs/hfs/mdb.c
index 4efb640..217e32f 100644
--- a/fs/hfs/mdb.c
+++ b/fs/hfs/mdb.c
@@ -333,6 +333,8 @@ void hfs_mdb_close(struct super_block *sb)
* Release the resources associated with the in-core MDB. */
void hfs_mdb_put(struct super_block *sb)
{
+ if (!HFS_SB(sb))
+ return;
/* free the B-trees */
hfs_btree_close(HFS_SB(sb)->ext_tree);
hfs_btree_close(HFS_SB(sb)->cat_tree);
@@ -340,4 +342,7 @@ void hfs_mdb_put(struct super_block *sb)
/* free the buffers holding the primary and alternate MDBs */
brelse(HFS_SB(sb)->mdb_bh);
brelse(HFS_SB(sb)->alt_mdb_bh);
+
+ kfree(HFS_SB(sb));
+ sb->s_fs_info = NULL;
}
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index 1e2c193..ab783f6 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -297,7 +297,7 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent)
res = -EINVAL;
if (!parse_options((char *)data, sbi)) {
hfs_warn("hfs_fs: unable to parse mount options.\n");
- goto bail3;
+ goto bail;
}
sb->s_op = &hfs_super_operations;
@@ -310,7 +310,7 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent)
hfs_warn("VFS: Can't find a HFS filesystem on dev %s.\n",
hfs_mdb_name(sb));
res = -EINVAL;
- goto bail2;
+ goto bail;
}
/* try to get the root inode */
@@ -340,10 +340,8 @@ bail_iput:
iput(root_inode);
bail_no_root:
hfs_warn("hfs_fs: get root inode failed.\n");
+bail:
hfs_mdb_put(sb);
-bail2:
-bail3:
- kfree(sbi);
return res;
}
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 5f80446..d55ad67 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -208,7 +208,9 @@ static void hfsplus_write_super(struct super_block *sb)
static void hfsplus_put_super(struct super_block *sb)
{
dprint(DBG_SUPER, "hfsplus_put_super\n");
- if (!(sb->s_flags & MS_RDONLY)) {
+ if (!sb->s_fs_info)
+ return;
+ if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) {
struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
vhdr->modify_date = hfsp_now2mt();
@@ -226,6 +228,8 @@ static void hfsplus_put_super(struct super_block *sb)
brelse(HFSPLUS_SB(sb).s_vhbh);
if (HFSPLUS_SB(sb).nls)
unload_nls(HFSPLUS_SB(sb).nls);
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
}
static int hfsplus_statfs(struct super_block *sb, struct kstatfs *buf)
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