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fs: provide rcu-walk aware permission i_ops

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Signed-off-by: Nick Piggin <npiggin@kernel.dk>
This commit is contained in:
Nick Piggin 2011-01-07 17:49:58 +11:00
parent 34286d6662
commit b74c79e993
60 changed files with 287 additions and 146 deletions
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14
fs/reiserfs/xattr.c
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@ -870,11 +870,14 @@ out:
return err;
}
static int reiserfs_check_acl(struct inode *inode, int mask)
static int reiserfs_check_acl(struct inode *inode, int mask, unsigned int flags)
{
struct posix_acl *acl;
int error = -EAGAIN; /* do regular unix permission checks by default */
if (flags & IPERM_FLAG_RCU)
return -ECHILD;
acl = reiserfs_get_acl(inode, ACL_TYPE_ACCESS);
if (acl) {
@ -951,8 +954,10 @@ static int xattr_mount_check(struct super_block *s)
return 0;
}
int reiserfs_permission(struct inode *inode, int mask)
int reiserfs_permission(struct inode *inode, int mask, unsigned int flags)
{
if (flags & IPERM_FLAG_RCU)
return -ECHILD;
/*
* We don't do permission checks on the internal objects.
* Permissions are determined by the "owning" object.
@ -965,9 +970,10 @@ int reiserfs_permission(struct inode *inode, int mask)
* Stat data v1 doesn't support ACLs.
*/
if (get_inode_sd_version(inode) != STAT_DATA_V1)
return generic_permission(inode, mask, reiserfs_check_acl);
return generic_permission(inode, mask, flags,
reiserfs_check_acl);
#endif
return generic_permission(inode, mask, NULL);
return generic_permission(inode, mask, flags, NULL);
}
static int xattr_hide_revalidate(struct dentry *dentry, struct nameidata *nd)