2 * Copyright (c) 2000, 2001 Robert N. M. Watson
5 * Copyright (c) 1999 Ilmar S. Habibulin
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * Developed by the TrustedBSD Project.
33 * Support for POSIX.1e process capabilities.
36 #ifndef _SYS_CAPABILITY_H
37 #define _SYS_CAPABILITY_H
39 #define POSIX1E_CAPABILITY_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
40 #define POSIX1E_CAPABILITY_EXTATTR_NAME "posix1e.cap"
42 typedef int cap_flag_t;
43 typedef int cap_flag_value_t;
44 typedef u_int64_t cap_value_t;
47 u_int64_t c_effective;
48 u_int64_t c_permitted;
49 u_int64_t c_inheritable;
51 typedef struct cap *cap_t;
53 #define SET_CAPABILITY(mask, cap) do { \
57 #define UNSET_CAPABILITY(mask, cap) do { \
61 #define IS_CAP_SET(mask, cap) \
65 * Is (tcap) a logical subset of (scap)?
67 #define CAP_SUBSET(scap,tcap) \
68 (((scap).c_permitted | (tcap).c_permitted == (scap).c_permitted) && \
69 ((scap).c_effective | (tcap).c_effective == (scap).c_effective) && \
70 ((scap).c_inheritable | (tcap).c_inheritable == (scap).c_inheritable))
73 * Possible flags for a particular capability.
75 #define CAP_EFFECTIVE 0x01
76 #define CAP_INHERITABLE 0x02
77 #define CAP_PERMITTED 0x04
80 * Possible values for each capability flag.
86 * Possible capability values, both BSD/LINUX and POSIX.1e.
88 #define CAP_CHOWN (0x0000000000000001)
89 #define CAP_DAC_EXECUTE (0x0000000000000002)
90 #define CAP_DAC_WRITE (0x0000000000000004)
91 #define CAP_DAC_READ_SEARCH (0x0000000000000008)
92 #define CAP_FOWNER (0x0000000000000010)
93 #define CAP_FSETID (0x0000000000000020)
94 #define CAP_KILL (0x0000000000000040)
95 #define CAP_LINK_DIR (0x0000000000000080)
96 #define CAP_SETFCAP (0x0000000000000100)
97 #define CAP_SETGID (0x0000000000000200)
98 #define CAP_SETUID (0x0000000000000400)
99 #define CAP_MAC_DOWNGRADE (0x0000000000000800)
100 #define CAP_MAC_READ (0x0000000000001000)
101 #define CAP_MAC_RELABEL_SUBJ (0x0000000000002000)
102 #define CAP_MAC_UPGRADE (0x0000000000004000)
103 #define CAP_MAC_WRITE (0x0000000000008000)
104 #define CAP_INF_NOFLOAT_OBJ (0x0000000000010000)
105 #define CAP_INF_NOFLOAT_SUBJ (0x0000000000020000)
106 #define CAP_INF_RELABEL_OBJ (0x0000000000040000)
107 #define CAP_INF_RELABEL_SUBJ (0x0000000000080000)
108 #define CAP_AUDIT_CONTROL (0x0000000000100000)
109 #define CAP_AUDIT_WRITE (0x0000000000200000)
112 * The following capability, borrowed from Linux, is unsafe
114 #define CAP_SETPCAP (0x0000000000400000)
115 /* This is unallocated: */
116 #define CAP_XXX_INVALID1 (0x0000000000800000)
117 #define CAP_SYS_SETFFLAG (0x0000000001000000)
119 * The CAP_LINUX_IMMUTABLE flag approximately maps into the
120 * general file flag setting capability in BSD. Therfore, for
121 * compatibility, map the constants.
123 #define CAP_LINUX_IMMUTABLE CAP_SYS_SETFFLAG
124 #define CAP_NET_BIND_SERVICE (0x0000000002000000)
125 #define CAP_NET_BROADCAST (0x0000000004000000)
126 #define CAP_NET_ADMIN (0x0000000008000000)
127 #define CAP_NET_RAW (0x0000000010000000)
128 #define CAP_IPC_LOCK (0x0000000020000000)
129 #define CAP_IPC_OWNER (0x0000000040000000)
131 * The following capabilities, borrowed from Linux, are unsafe in a
132 * secure environment.
135 #define CAP_SYS_MODULE (0x0000000080000000)
136 #define CAP_SYS_RAWIO (0x0000000100000000)
137 #define CAP_SYS_CHROOT (0x0000000200000000)
138 #define CAP_SYS_PTRACE (0x0000000400000000)
139 #define CAP_SYS_PACCT (0x0000000800000000)
140 #define CAP_SYS_ADMIN (0x0000001000000000)
142 * Back to the safe ones, again
144 #define CAP_SYS_BOOT (0x0000002000000000)
145 #define CAP_SYS_NICE (0x0000004000000000)
146 #define CAP_SYS_RESOURCE (0x0000008000000000)
147 #define CAP_SYS_TIME (0x0000010000000000)
148 #define CAP_SYS_TTY_CONFIG (0x0000020000000000)
149 #define CAP_MKNOD (0x0000040000000000)
150 #define CAP_MAX_ID CAP_MKNOD
152 #define CAP_ALL_ON (CAP_CHOWN | CAP_DAC_EXECUTE | CAP_DAC_WRITE | \
153 CAP_DAC_READ_SEARCH | CAP_FOWNER | CAP_FSETID | CAP_KILL | CAP_LINK_DIR | \
154 CAP_SETFCAP | CAP_SETGID | CAP_SETUID | CAP_MAC_DOWNGRADE | \
155 CAP_MAC_READ | CAP_MAC_RELABEL_SUBJ | CAP_MAC_UPGRADE | \
156 CAP_MAC_WRITE | CAP_INF_NOFLOAT_OBJ | CAP_INF_NOFLOAT_SUBJ | \
157 CAP_INF_RELABEL_OBJ | CAP_INF_RELABEL_SUBJ | CAP_AUDIT_CONTROL | \
158 CAP_AUDIT_WRITE | CAP_SETPCAP | CAP_SYS_SETFFLAG | CAP_NET_BIND_SERVICE | \
159 CAP_NET_BROADCAST | CAP_NET_ADMIN | CAP_NET_RAW | CAP_IPC_LOCK | \
160 CAP_IPC_OWNER | CAP_SYS_MODULE | CAP_SYS_RAWIO | CAP_SYS_CHROOT | \
161 CAP_SYS_PTRACE | CAP_SYS_PACCT | CAP_SYS_ADMIN | CAP_SYS_BOOT | \
162 CAP_SYS_NICE | CAP_SYS_RESOURCE | CAP_SYS_TIME | CAP_SYS_TTY_CONFIG | \
164 #define CAP_ALL_OFF (0)
171 int cap_check(struct ucred *, struct proc *, cap_value_t, int);
172 int cap_change_on_inherit(struct cap *cap_p);
173 int cap_inherit(struct vnode *vp, struct proc *p);
174 void cap_init_proc0(struct cap *);
175 void cap_init_proc1(struct cap *);
182 typedef _BSD_SSIZE_T_ ssize_t;
186 int __cap_get_proc(struct cap *);
187 int __cap_set_proc(struct cap *);
188 int __cap_get_fd(int, struct cap *);
189 int __cap_get_file(const char *, struct cap *);
190 int __cap_set_fd(int, struct cap *);
191 int __cap_set_file(const char *, struct cap *);
193 int cap_clear(cap_t);
194 ssize_t cap_copy_ext(void *, cap_t, ssize_t);
195 cap_t cap_copy_int(const void *);
196 cap_t cap_dup(cap_t);
197 int cap_free(void *);
198 cap_t cap_from_text(const char *);
199 cap_t cap_get_fd(int);
200 cap_t cap_get_file(const char *);
201 int cap_get_flag(cap_t, cap_value_t, cap_flag_t, cap_flag_value_t *);
202 cap_t cap_get_proc(void);
203 cap_t cap_init(void);
204 int cap_set_fd(int, cap_t);
205 int cap_set_file(const char *, cap_t);
206 int cap_set_flag(cap_t, cap_flag_t, int, cap_value_t[] , cap_flag_value_t);
207 int cap_set_proc(cap_t);
208 ssize_t cap_size(cap_t);
209 char *cap_to_text(cap_t, ssize_t *);
211 #endif /* !_KERNEL */
213 #endif /* !_SYS_CAPABILITY_H */