Commit a68979b8 authored by Tiger Yang's avatar Tiger Yang Committed by Mark Fasheh
Browse files

ocfs2: add mount option and Kconfig option for acl 



This patch adds the Kconfig option "CONFIG_OCFS2_FS_POSIX_ACL"
and mount options "acl" to enable acls in Ocfs2.

Signed-off-by: default avatarTiger Yang <tiger.yang@oracle.com>
Signed-off-by: default avatarMark Fasheh <mfasheh@suse.com>
parent 89c38bd0

Documentation/filesystems/ocfs2.txt

+2 −1
Original line number Diff line number Diff line
@@ -31,7 +31,6 @@ Features which OCFS2 does not support yet: 
	- quotas

	- Directory change notification (F_NOTIFY)

	- Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)

	- POSIX ACLs



Mount options

=============
@@ -79,3 +78,5 @@ inode64 Indicates that Ocfs2 is allowed to create inodes at 
			bits of significance.

user_xattr	(*)	Enables Extended User Attributes.

nouser_xattr		Disables Extended User Attributes.

acl			Enables POSIX Access Control Lists support.

noacl		(*)	Disables POSIX Access Control Lists support.

fs/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -268,6 +268,15 @@ config OCFS2_COMPAT_JBD 
	  is backwards compatible with JBD.  It is safe to say N here.

	  However, if you really want to use the original JBD, say Y here.



config OCFS2_FS_POSIX_ACL

	bool "OCFS2 POSIX Access Control Lists"

	depends on OCFS2_FS

	select FS_POSIX_ACL

	default n

	help

	  Posix Access Control Lists (ACLs) support permissions for users and

	  groups beyond the owner/group/world scheme.



endif # BLOCK



source "fs/notify/Kconfig"

fs/ocfs2/super.c

+33 −0
Original line number Diff line number Diff line
@@ -158,6 +158,8 @@ enum { 
	Opt_user_xattr,

	Opt_nouser_xattr,

	Opt_inode64,

	Opt_acl,

	Opt_noacl,

	Opt_err,

};
@@ -180,6 +182,8 @@ static const match_table_t tokens = { 
	{Opt_user_xattr, "user_xattr"},

	{Opt_nouser_xattr, "nouser_xattr"},

	{Opt_inode64, "inode64"},

	{Opt_acl, "acl"},

	{Opt_noacl, "noacl"},

	{Opt_err, NULL}

};
@@ -466,6 +470,8 @@ static int ocfs2_remount(struct super_block *sb, int *flags, char *data) 
	if (!ret) {

		/* Only save off the new mount options in case of a successful

		 * remount. */

		if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR))

			parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;

		osb->s_mount_opt = parsed_options.mount_opt;

		osb->s_atime_quantum = parsed_options.atime_quantum;

		osb->preferred_slot = parsed_options.slot;
@@ -651,6 +657,10 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) 
	}

	brelse(bh);

	bh = NULL;



	if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR))

		parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;



	osb->s_mount_opt = parsed_options.mount_opt;

	osb->s_atime_quantum = parsed_options.atime_quantum;

	osb->preferred_slot = parsed_options.slot;
@@ -664,6 +674,9 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) 


	sb->s_magic = OCFS2_SUPER_MAGIC;



	sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |

		((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);



	/* Hard readonly mode only if: bdev_read_only, MS_RDONLY,

	 * heartbeat=none */

	if (bdev_read_only(sb->s_bdev)) {
@@ -945,6 +958,19 @@ static int ocfs2_parse_options(struct super_block *sb, 
		case Opt_inode64:

			mopt->mount_opt |= OCFS2_MOUNT_INODE64;

			break;

#ifdef CONFIG_OCFS2_FS_POSIX_ACL

		case Opt_acl:

			mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;

			break;

		case Opt_noacl:

			mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;

			break;

#else

		case Opt_acl:

		case Opt_noacl:

			printk(KERN_INFO "ocfs2 (no)acl options not supported\n");

			break;

#endif

		default:

			mlog(ML_ERROR,

			     "Unrecognized mount option \"%s\" "
@@ -1017,6 +1043,13 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) 
	if (opts & OCFS2_MOUNT_INODE64)

		seq_printf(s, ",inode64");



#ifdef CONFIG_OCFS2_FS_POSIX_ACL

	if (opts & OCFS2_MOUNT_POSIX_ACL)

		seq_printf(s, ",acl");

	else

		seq_printf(s, ",noacl");

#endif



	return 0;

}