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authorJan Kara <jack@suse.cz>2017-06-22 15:31:10 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-08-06 18:59:39 -0700
commit3a79e1c8e709db0174dbafc5dcd9785e4bf36250 (patch)
tree3373427d96d8110f91b856f779458e95e64ec1f8 /fs/jfs
parent26d01aa8a110b9809d2bd138be42ee39ed4e3183 (diff)
jfs: Don't clear SGID when inheriting ACLs
commit 9bcf66c72d726322441ec82962994e69157613e4 upstream. When new directory 'DIR1' is created in a directory 'DIR0' with SGID bit set, DIR1 is expected to have SGID bit set (and owning group equal to the owning group of 'DIR0'). However when 'DIR0' also has some default ACLs that 'DIR1' inherits, setting these ACLs will result in SGID bit on 'DIR1' to get cleared if user is not member of the owning group. Fix the problem by moving posix_acl_update_mode() out of __jfs_set_acl() into jfs_set_acl(). That way the function will not be called when inheriting ACLs which is what we want as it prevents SGID bit clearing and the mode has been properly set by posix_acl_create() anyway. Fixes: 073931017b49d9458aa351605b43a7e34598caef CC: jfs-discussion@lists.sourceforge.net Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/jfs')
-rw-r--r--fs/jfs/acl.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
index 7bc186f4ed4d..1be45c8d460d 100644
--- a/fs/jfs/acl.c
+++ b/fs/jfs/acl.c
@@ -77,13 +77,6 @@ static int __jfs_set_acl(tid_t tid, struct inode *inode, int type,
switch (type) {
case ACL_TYPE_ACCESS:
ea_name = XATTR_NAME_POSIX_ACL_ACCESS;
- if (acl) {
- rc = posix_acl_update_mode(inode, &inode->i_mode, &acl);
- if (rc)
- return rc;
- inode->i_ctime = current_time(inode);
- mark_inode_dirty(inode);
- }
break;
case ACL_TYPE_DEFAULT:
ea_name = XATTR_NAME_POSIX_ACL_DEFAULT;
@@ -118,9 +111,17 @@ int jfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
tid = txBegin(inode->i_sb, 0);
mutex_lock(&JFS_IP(inode)->commit_mutex);
+ if (type == ACL_TYPE_ACCESS && acl) {
+ rc = posix_acl_update_mode(inode, &inode->i_mode, &acl);
+ if (rc)
+ goto end_tx;
+ inode->i_ctime = current_time(inode);
+ mark_inode_dirty(inode);
+ }
rc = __jfs_set_acl(tid, inode, type, acl);
if (!rc)
rc = txCommit(tid, 1, &inode, 0);
+end_tx:
txEnd(tid);
mutex_unlock(&JFS_IP(inode)->commit_mutex);
return rc;