[XFS] Kill attr_capable checks as already done in xattr_permission.
No need for addition permission checks in the xattr handler,
fs/xattr.c:xattr_permission() already does them, and in fact slightly more
strict then what was in the attr_capable handlers.
SGI-PV: 981809
SGI-Modid: xfs-linux-melb:xfs-kern:31164a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 5fc61c8..13b6cfd 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -739,15 +739,11 @@
char *attr = (char *)name;
attrnames_t *namesp;
int xflags = 0;
- int error;
namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT);
if (!namesp)
return -EOPNOTSUPP;
attr += namesp->attr_namelen;
- error = namesp->attr_capable(vp, NULL);
- if (error)
- return error;
/* Convert Linux syscall to XFS internal ATTR flags */
if (flags & XATTR_CREATE)
@@ -769,15 +765,11 @@
char *attr = (char *)name;
attrnames_t *namesp;
int xflags = 0;
- ssize_t error;
namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT);
if (!namesp)
return -EOPNOTSUPP;
attr += namesp->attr_namelen;
- error = namesp->attr_capable(vp, NULL);
- if (error)
- return error;
/* Convert Linux syscall to XFS internal ATTR flags */
if (!size) {
@@ -817,15 +809,12 @@
char *attr = (char *)name;
attrnames_t *namesp;
int xflags = 0;
- int error;
namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT);
if (!namesp)
return -EOPNOTSUPP;
attr += namesp->attr_namelen;
- error = namesp->attr_capable(vp, NULL);
- if (error)
- return error;
+
xflags |= namesp->attr_flag;
return namesp->attr_remove(vp, attr, xflags);
}
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index df151a8..86d8619 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -2622,43 +2622,6 @@
return NULL;
}
-/*
- * Some checks to prevent people abusing EAs to get over quota:
- * - Don't allow modifying user EAs on devices/symlinks;
- * - Don't allow modifying user EAs if sticky bit set;
- */
-STATIC int
-attr_user_capable(
- bhv_vnode_t *vp,
- cred_t *cred)
-{
- struct inode *inode = vn_to_inode(vp);
-
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
- return -EPERM;
- if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode) &&
- !capable(CAP_SYS_ADMIN))
- return -EPERM;
- if (S_ISDIR(inode->i_mode) && (inode->i_mode & S_ISVTX) &&
- (current_fsuid(cred) != inode->i_uid) && !capable(CAP_FOWNER))
- return -EPERM;
- return 0;
-}
-
-STATIC int
-attr_trusted_capable(
- bhv_vnode_t *vp,
- cred_t *cred)
-{
- struct inode *inode = vn_to_inode(vp);
-
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
- return -EPERM;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- return 0;
-}
-
STATIC int
attr_system_set(
bhv_vnode_t *vp, char *name, void *data, size_t size, int xflags)
@@ -2709,7 +2672,6 @@
.attr_get = attr_system_get,
.attr_set = attr_system_set,
.attr_remove = attr_system_remove,
- .attr_capable = (attrcapable_t)fs_noerr,
};
struct attrnames attr_trusted = {
@@ -2719,7 +2681,6 @@
.attr_get = attr_generic_get,
.attr_set = attr_generic_set,
.attr_remove = attr_generic_remove,
- .attr_capable = attr_trusted_capable,
};
struct attrnames attr_secure = {
@@ -2729,7 +2690,6 @@
.attr_get = attr_generic_get,
.attr_set = attr_generic_set,
.attr_remove = attr_generic_remove,
- .attr_capable = (attrcapable_t)fs_noerr,
};
struct attrnames attr_user = {
@@ -2738,7 +2698,6 @@
.attr_get = attr_generic_get,
.attr_set = attr_generic_set,
.attr_remove = attr_generic_remove,
- .attr_capable = attr_user_capable,
};
struct attrnames *attr_namespaces[] =
diff --git a/fs/xfs/xfs_attr.h b/fs/xfs/xfs_attr.h
index 6cfc938..9b96d17 100644
--- a/fs/xfs/xfs_attr.h
+++ b/fs/xfs/xfs_attr.h
@@ -42,7 +42,6 @@
typedef int (*attrget_t)(bhv_vnode_t *, char *, void *, size_t, int);
typedef int (*attrremove_t)(bhv_vnode_t *, char *, int);
typedef int (*attrexists_t)(bhv_vnode_t *);
-typedef int (*attrcapable_t)(bhv_vnode_t *, struct cred *);
typedef struct attrnames {
char * attr_name;
@@ -52,7 +51,6 @@
attrset_t attr_set;
attrremove_t attr_remove;
attrexists_t attr_exists;
- attrcapable_t attr_capable;
} attrnames_t;
#define ATTR_NAMECOUNT 4