LU-9859 libcfs: simplify capability dropping.

[fs/lustre-release.git] / libcfs / include / libcfs / curproc.h

diff --git a/libcfs/include/libcfs/curproc.h b/libcfs/include/libcfs/curproc.h
index e5e3d57..197c0c9 100644 (file)
--- a/libcfs/include/libcfs/curproc.h
+++ b/libcfs/include/libcfs/curproc.h
@@ -15,11 +15,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2012, 2014, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -43,101 +39,13 @@
 #ifndef __LIBCFS_CURPROC_H__
 #define __LIBCFS_CURPROC_H__
 
-#if !defined(HAVE_UIDGID_HEADER) || !defined(__KERNEL__)
-
-typedef uid_t kuid_t;
-typedef gid_t kgid_t;
-
-#define INVALID_UID     -1
-#define INVALID_GID     -1
-
-#define GLOBAL_ROOT_UID         0
-#define GLOBAL_ROOT_GID         0
-
-#ifndef __KERNEL__
-struct user_namespace {
-       unsigned int pad;
-};
-
-extern struct user_namespace init_user_ns;
-#endif
-
-static inline uid_t __kuid_val(kuid_t uid)
-{
-       return uid;
-}
-
-static inline gid_t __kgid_val(kgid_t gid)
-{
-       return gid;
-}
-
-static inline kuid_t make_kuid(struct user_namespace *from, uid_t uid)
-{
-       return uid;
-}
-
-static inline kgid_t make_kgid(struct user_namespace *from, gid_t gid)
-{
-       return gid;
-}
-
-static inline uid_t from_kuid(struct user_namespace *to, kuid_t uid)
-{
-       return uid;
-}
-
-static inline gid_t from_kgid(struct user_namespace *to, kgid_t gid)
-{
-       return gid;
-}
-
-static inline bool uid_eq(kuid_t left, kuid_t right)
-{
-       return left == right;
-}
-
-static inline bool uid_valid(kuid_t uid)
-{
-       return (uid != INVALID_UID);
-}
+typedef __u32 cfs_cap_t;
 
-static inline bool gid_valid(kgid_t gid)
+static inline cfs_cap_t cfs_curproc_cap_pack(void)
 {
-       return (gid != INVALID_GID);
+       /* cfs_cap_t is only the first word of kernel_cap_t */
+       return (cfs_cap_t)(current_cap().cap[0]);
 }
-#endif
-
-int cfs_get_environ(const char *key, char *value, int *val_len);
-
-typedef __u32 cfs_cap_t;
-
-#define CFS_CAP_CHOWN                   0
-#define CFS_CAP_DAC_OVERRIDE            1
-#define CFS_CAP_DAC_READ_SEARCH         2
-#define CFS_CAP_FOWNER                  3
-#define CFS_CAP_FSETID                  4
-#define CFS_CAP_LINUX_IMMUTABLE         9
-#define CFS_CAP_SYS_ADMIN              21
-#define CFS_CAP_SYS_BOOT               23
-#define CFS_CAP_SYS_RESOURCE           24
-
-#define CFS_CAP_FS_MASK ((1 << CFS_CAP_CHOWN) |                 \
-                         (1 << CFS_CAP_DAC_OVERRIDE) |          \
-                         (1 << CFS_CAP_DAC_READ_SEARCH) |       \
-                         (1 << CFS_CAP_FOWNER) |                \
-                         (1 << CFS_CAP_FSETID ) |               \
-                         (1 << CFS_CAP_LINUX_IMMUTABLE) |       \
-                         (1 << CFS_CAP_SYS_ADMIN) |             \
-                         (1 << CFS_CAP_SYS_BOOT) |              \
-                         (1 << CFS_CAP_SYS_RESOURCE))
-
-void cfs_cap_raise(cfs_cap_t cap);
-void cfs_cap_lower(cfs_cap_t cap);
-int cfs_cap_raised(cfs_cap_t cap);
-cfs_cap_t cfs_curproc_cap_pack(void);
-void cfs_curproc_cap_unpack(cfs_cap_t cap);
-int cfs_capable(cfs_cap_t cap);
 
 /* __LIBCFS_CURPROC_H__ */
 #endif