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ocfs2: add mount option and Kconfig option for acl

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

Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Tiger Yang 2008-11-14 11:17:52 +08:00 committed by Mark Fasheh
parent 89c38bd0ad
commit a68979b857
3 changed files with 44 additions and 1 deletions
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3
Documentation/filesystems/ocfs2.txt
View file

@ -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.

9
fs/Kconfig
View file

@ -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"

33
fs/ocfs2/super.c
View file

@ -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 @@ unlock_osb:
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;
}