4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * libcfs/include/libcfs/curproc.h
38 * Lustre curproc API declaration
40 * Author: Nikita Danilov <nikita@clusterfs.com>
43 #ifndef __LIBCFS_CURPROC_H__
44 #define __LIBCFS_CURPROC_H__
46 #if !defined(HAVE_UIDGID_HEADER) || !defined(__KERNEL__)
51 #define INVALID_UID -1
52 #define INVALID_GID -1
55 struct user_namespace {
59 extern struct user_namespace init_user_ns;
62 static inline uid_t __kuid_val(kuid_t uid)
67 static inline gid_t __kgid_val(kgid_t gid)
72 static inline kuid_t make_kuid(struct user_namespace *from, uid_t uid)
77 static inline kgid_t make_kgid(struct user_namespace *from, gid_t gid)
82 static inline uid_t from_kuid(struct user_namespace *to, kuid_t uid)
87 static inline gid_t from_kgid(struct user_namespace *to, kgid_t gid)
92 static inline bool uid_eq(kuid_t left, kuid_t right)
97 static inline bool uid_valid(kuid_t uid)
99 return (uid != INVALID_UID);
102 static inline bool gid_valid(kgid_t gid)
104 return (gid != INVALID_GID);
108 int cfs_get_environ(const char *key, char *value, int *val_len);
110 typedef __u32 cfs_cap_t;
112 #define CFS_CAP_CHOWN 0
113 #define CFS_CAP_DAC_OVERRIDE 1
114 #define CFS_CAP_DAC_READ_SEARCH 2
115 #define CFS_CAP_FOWNER 3
116 #define CFS_CAP_FSETID 4
117 #define CFS_CAP_LINUX_IMMUTABLE 9
118 #define CFS_CAP_SYS_ADMIN 21
119 #define CFS_CAP_SYS_BOOT 23
120 #define CFS_CAP_SYS_RESOURCE 24
122 #define CFS_CAP_FS_MASK ((1 << CFS_CAP_CHOWN) | \
123 (1 << CFS_CAP_DAC_OVERRIDE) | \
124 (1 << CFS_CAP_DAC_READ_SEARCH) | \
125 (1 << CFS_CAP_FOWNER) | \
126 (1 << CFS_CAP_FSETID ) | \
127 (1 << CFS_CAP_LINUX_IMMUTABLE) | \
128 (1 << CFS_CAP_SYS_ADMIN) | \
129 (1 << CFS_CAP_SYS_BOOT) | \
130 (1 << CFS_CAP_SYS_RESOURCE))
132 void cfs_cap_raise(cfs_cap_t cap);
133 void cfs_cap_lower(cfs_cap_t cap);
134 int cfs_cap_raised(cfs_cap_t cap);
135 cfs_cap_t cfs_curproc_cap_pack(void);
136 void cfs_curproc_cap_unpack(cfs_cap_t cap);
137 int cfs_capable(cfs_cap_t cap);
139 /* __LIBCFS_CURPROC_H__ */
143 * c-indentation-style: "K&R"