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1 | /* |
2 | * This is <linux/capability.h> |
3 | * |
4 | * Andrew G. Morgan <morgan@kernel.org> |
5 | * Alexander Kjeldaas <astor@guardian.no> |
6 | * with help from Aleph1, Roland Buresund and Andrew Main. |
7 | * |
8 | * See here for the libcap library ("POSIX draft" compliance): |
9 | * |
10 | * ftp://www.kernel.org/pub/linux/libs/security/linux-privs/kernel-2.6/ |
11 | */ |
12 | |
13 | #ifndef _LINUX_CAPABILITY_H |
14 | #define _LINUX_CAPABILITY_H |
15 | |
16 | #include <linux/types.h> |
17 | |
18 | struct task_struct; |
19 | |
20 | /* User-level do most of the mapping between kernel and user |
21 | capabilities based on the version tag given by the kernel. The |
22 | kernel might be somewhat backwards compatible, but don't bet on |
23 | it. */ |
24 | |
25 | /* Note, cap_t, is defined by POSIX (draft) to be an "opaque" pointer to |
26 | a set of three capability sets. The transposition of 3*the |
27 | following structure to such a composite is better handled in a user |
28 | library since the draft standard requires the use of malloc/free |
29 | etc.. */ |
30 | |
31 | #define _LINUX_CAPABILITY_VERSION_1 0x19980330 |
32 | #define _LINUX_CAPABILITY_U32S_1 1 |
33 | |
34 | #define _LINUX_CAPABILITY_VERSION_2 0x20071026 /* deprecated - use v3 */ |
35 | #define _LINUX_CAPABILITY_U32S_2 2 |
36 | |
37 | #define _LINUX_CAPABILITY_VERSION_3 0x20080522 |
38 | #define _LINUX_CAPABILITY_U32S_3 2 |
39 | |
40 | typedef struct __user_cap_header_struct { |
41 | __u32 version; |
42 | int pid; |
43 | } __user *cap_user_header_t; |
44 | |
45 | typedef struct __user_cap_data_struct { |
46 | __u32 effective; |
47 | __u32 permitted; |
48 | __u32 inheritable; |
49 | } __user *cap_user_data_t; |
50 | |
51 | |
52 | #define VFS_CAP_REVISION_MASK 0xFF000000 |
53 | #define VFS_CAP_REVISION_SHIFT 24 |
54 | #define VFS_CAP_FLAGS_MASK ~VFS_CAP_REVISION_MASK |
55 | #define VFS_CAP_FLAGS_EFFECTIVE 0x000001 |
56 | |
57 | #define VFS_CAP_REVISION_1 0x01000000 |
58 | #define VFS_CAP_U32_1 1 |
59 | #define XATTR_CAPS_SZ_1 (sizeof(__le32)*(1 + 2*VFS_CAP_U32_1)) |
60 | |
61 | #define VFS_CAP_REVISION_2 0x02000000 |
62 | #define VFS_CAP_U32_2 2 |
63 | #define XATTR_CAPS_SZ_2 (sizeof(__le32)*(1 + 2*VFS_CAP_U32_2)) |
64 | |
65 | #define XATTR_CAPS_SZ XATTR_CAPS_SZ_2 |
66 | #define VFS_CAP_U32 VFS_CAP_U32_2 |
67 | #define VFS_CAP_REVISION VFS_CAP_REVISION_2 |
68 | |
69 | struct vfs_cap_data { |
70 | __le32 magic_etc; /* Little endian */ |
71 | struct { |
72 | __le32 permitted; /* Little endian */ |
73 | __le32 inheritable; /* Little endian */ |
74 | } data[VFS_CAP_U32]; |
75 | }; |
76 | |
77 | #ifndef __KERNEL__ |
78 | |
79 | /* |
80 | * Backwardly compatible definition for source code - trapped in a |
81 | * 32-bit world. If you find you need this, please consider using |
82 | * libcap to untrap yourself... |
83 | */ |
84 | #define _LINUX_CAPABILITY_VERSION _LINUX_CAPABILITY_VERSION_1 |
85 | #define _LINUX_CAPABILITY_U32S _LINUX_CAPABILITY_U32S_1 |
86 | |
87 | #else |
88 | |
89 | #define _KERNEL_CAPABILITY_VERSION _LINUX_CAPABILITY_VERSION_3 |
90 | #define _KERNEL_CAPABILITY_U32S _LINUX_CAPABILITY_U32S_3 |
91 | |
92 | extern int file_caps_enabled; |
93 | |
94 | typedef struct kernel_cap_struct { |
95 | __u32 cap[_KERNEL_CAPABILITY_U32S]; |
96 | } kernel_cap_t; |
97 | |
98 | /* exact same as vfs_cap_data but in cpu endian and always filled completely */ |
99 | struct cpu_vfs_cap_data { |
100 | __u32 magic_etc; |
101 | kernel_cap_t permitted; |
102 | kernel_cap_t inheritable; |
103 | }; |
104 | |
105 | #define _USER_CAP_HEADER_SIZE (sizeof(struct __user_cap_header_struct)) |
106 | #define _KERNEL_CAP_T_SIZE (sizeof(kernel_cap_t)) |
107 | |
108 | #endif |
109 | |
110 | |
111 | /** |
112 | ** POSIX-draft defined capabilities. |
113 | **/ |
114 | |
115 | /* In a system with the [_POSIX_CHOWN_RESTRICTED] option defined, this |
116 | overrides the restriction of changing file ownership and group |
117 | ownership. */ |
118 | |
119 | #define CAP_CHOWN 0 |
120 | |
121 | /* Override all DAC access, including ACL execute access if |
122 | [_POSIX_ACL] is defined. Excluding DAC access covered by |
123 | CAP_LINUX_IMMUTABLE. */ |
124 | |
125 | #define CAP_DAC_OVERRIDE 1 |
126 | |
127 | /* Overrides all DAC restrictions regarding read and search on files |
128 | and directories, including ACL restrictions if [_POSIX_ACL] is |
129 | defined. Excluding DAC access covered by CAP_LINUX_IMMUTABLE. */ |
130 | |
131 | #define CAP_DAC_READ_SEARCH 2 |
132 | |
133 | /* Overrides all restrictions about allowed operations on files, where |
134 | file owner ID must be equal to the user ID, except where CAP_FSETID |
135 | is applicable. It doesn't override MAC and DAC restrictions. */ |
136 | |
137 | #define CAP_FOWNER 3 |
138 | |
139 | /* Overrides the following restrictions that the effective user ID |
140 | shall match the file owner ID when setting the S_ISUID and S_ISGID |
141 | bits on that file; that the effective group ID (or one of the |
142 | supplementary group IDs) shall match the file owner ID when setting |
143 | the S_ISGID bit on that file; that the S_ISUID and S_ISGID bits are |
144 | cleared on successful return from chown(2) (not implemented). */ |
145 | |
146 | #define CAP_FSETID 4 |
147 | |
148 | /* Overrides the restriction that the real or effective user ID of a |
149 | process sending a signal must match the real or effective user ID |
150 | of the process receiving the signal. */ |
151 | |
152 | #define CAP_KILL 5 |
153 | |
154 | /* Allows setgid(2) manipulation */ |
155 | /* Allows setgroups(2) */ |
156 | /* Allows forged gids on socket credentials passing. */ |
157 | |
158 | #define CAP_SETGID 6 |
159 | |
160 | /* Allows set*uid(2) manipulation (including fsuid). */ |
161 | /* Allows forged pids on socket credentials passing. */ |
162 | |
163 | #define CAP_SETUID 7 |
164 | |
165 | |
166 | /** |
167 | ** Linux-specific capabilities |
168 | **/ |
169 | |
170 | /* Without VFS support for capabilities: |
171 | * Transfer any capability in your permitted set to any pid, |
172 | * remove any capability in your permitted set from any pid |
173 | * With VFS support for capabilities (neither of above, but) |
174 | * Add any capability from current's capability bounding set |
175 | * to the current process' inheritable set |
176 | * Allow taking bits out of capability bounding set |
177 | * Allow modification of the securebits for a process |
178 | */ |
179 | |
180 | #define CAP_SETPCAP 8 |
181 | |
182 | /* Allow modification of S_IMMUTABLE and S_APPEND file attributes */ |
183 | |
184 | #define CAP_LINUX_IMMUTABLE 9 |
185 | |
186 | /* Allows binding to TCP/UDP sockets below 1024 */ |
187 | /* Allows binding to ATM VCIs below 32 */ |
188 | |
189 | #define CAP_NET_BIND_SERVICE 10 |
190 | |
191 | /* Allow broadcasting, listen to multicast */ |
192 | |
193 | #define CAP_NET_BROADCAST 11 |
194 | |
195 | /* Allow interface configuration */ |
196 | /* Allow administration of IP firewall, masquerading and accounting */ |
197 | /* Allow setting debug option on sockets */ |
198 | /* Allow modification of routing tables */ |
199 | /* Allow setting arbitrary process / process group ownership on |
200 | sockets */ |
201 | /* Allow binding to any address for transparent proxying */ |
202 | /* Allow setting TOS (type of service) */ |
203 | /* Allow setting promiscuous mode */ |
204 | /* Allow clearing driver statistics */ |
205 | /* Allow multicasting */ |
206 | /* Allow read/write of device-specific registers */ |
207 | /* Allow activation of ATM control sockets */ |
208 | |
209 | #define CAP_NET_ADMIN 12 |
210 | |
211 | /* Allow use of RAW sockets */ |
212 | /* Allow use of PACKET sockets */ |
213 | |
214 | #define CAP_NET_RAW 13 |
215 | |
216 | /* Allow locking of shared memory segments */ |
217 | /* Allow mlock and mlockall (which doesn't really have anything to do |
218 | with IPC) */ |
219 | |
220 | #define CAP_IPC_LOCK 14 |
221 | |
222 | /* Override IPC ownership checks */ |
223 | |
224 | #define CAP_IPC_OWNER 15 |
225 | |
226 | /* Insert and remove kernel modules - modify kernel without limit */ |
227 | #define CAP_SYS_MODULE 16 |
228 | |
229 | /* Allow ioperm/iopl access */ |
230 | /* Allow sending USB messages to any device via /proc/bus/usb */ |
231 | |
232 | #define CAP_SYS_RAWIO 17 |
233 | |
234 | /* Allow use of chroot() */ |
235 | |
236 | #define CAP_SYS_CHROOT 18 |
237 | |
238 | /* Allow ptrace() of any process */ |
239 | |
240 | #define CAP_SYS_PTRACE 19 |
241 | |
242 | /* Allow configuration of process accounting */ |
243 | |
244 | #define CAP_SYS_PACCT 20 |
245 | |
246 | /* Allow configuration of the secure attention key */ |
247 | /* Allow administration of the random device */ |
248 | /* Allow examination and configuration of disk quotas */ |
249 | /* Allow configuring the kernel's syslog (printk behaviour) */ |
250 | /* Allow setting the domainname */ |
251 | /* Allow setting the hostname */ |
252 | /* Allow calling bdflush() */ |
253 | /* Allow mount() and umount(), setting up new smb connection */ |
254 | /* Allow some autofs root ioctls */ |
255 | /* Allow nfsservctl */ |
256 | /* Allow VM86_REQUEST_IRQ */ |
257 | /* Allow to read/write pci config on alpha */ |
258 | /* Allow irix_prctl on mips (setstacksize) */ |
259 | /* Allow flushing all cache on m68k (sys_cacheflush) */ |
260 | /* Allow removing semaphores */ |
261 | /* Used instead of CAP_CHOWN to "chown" IPC message queues, semaphores |
262 | and shared memory */ |
263 | /* Allow locking/unlocking of shared memory segment */ |
264 | /* Allow turning swap on/off */ |
265 | /* Allow forged pids on socket credentials passing */ |
266 | /* Allow setting readahead and flushing buffers on block devices */ |
267 | /* Allow setting geometry in floppy driver */ |
268 | /* Allow turning DMA on/off in xd driver */ |
269 | /* Allow administration of md devices (mostly the above, but some |
270 | extra ioctls) */ |
271 | /* Allow tuning the ide driver */ |
272 | /* Allow access to the nvram device */ |
273 | /* Allow administration of apm_bios, serial and bttv (TV) device */ |
274 | /* Allow manufacturer commands in isdn CAPI support driver */ |
275 | /* Allow reading non-standardized portions of pci configuration space */ |
276 | /* Allow DDI debug ioctl on sbpcd driver */ |
277 | /* Allow setting up serial ports */ |
278 | /* Allow sending raw qic-117 commands */ |
279 | /* Allow enabling/disabling tagged queuing on SCSI controllers and sending |
280 | arbitrary SCSI commands */ |
281 | /* Allow setting encryption key on loopback filesystem */ |
282 | /* Allow setting zone reclaim policy */ |
283 | |
284 | #define CAP_SYS_ADMIN 21 |
285 | |
286 | /* Allow use of reboot() */ |
287 | |
288 | #define CAP_SYS_BOOT 22 |
289 | |
290 | /* Allow raising priority and setting priority on other (different |
291 | UID) processes */ |
292 | /* Allow use of FIFO and round-robin (realtime) scheduling on own |
293 | processes and setting the scheduling algorithm used by another |
294 | process. */ |
295 | /* Allow setting cpu affinity on other processes */ |
296 | |
297 | #define CAP_SYS_NICE 23 |
298 | |
299 | /* Override resource limits. Set resource limits. */ |
300 | /* Override quota limits. */ |
301 | /* Override reserved space on ext2 filesystem */ |
302 | /* Modify data journaling mode on ext3 filesystem (uses journaling |
303 | resources) */ |
304 | /* NOTE: ext2 honors fsuid when checking for resource overrides, so |
305 | you can override using fsuid too */ |
306 | /* Override size restrictions on IPC message queues */ |
307 | /* Allow more than 64hz interrupts from the real-time clock */ |
308 | /* Override max number of consoles on console allocation */ |
309 | /* Override max number of keymaps */ |
310 | |
311 | #define CAP_SYS_RESOURCE 24 |
312 | |
313 | /* Allow manipulation of system clock */ |
314 | /* Allow irix_stime on mips */ |
315 | /* Allow setting the real-time clock */ |
316 | |
317 | #define CAP_SYS_TIME 25 |
318 | |
319 | /* Allow configuration of tty devices */ |
320 | /* Allow vhangup() of tty */ |
321 | |
322 | #define CAP_SYS_TTY_CONFIG 26 |
323 | |
324 | /* Allow the privileged aspects of mknod() */ |
325 | |
326 | #define CAP_MKNOD 27 |
327 | |
328 | /* Allow taking of leases on files */ |
329 | |
330 | #define CAP_LEASE 28 |
331 | |
332 | #define CAP_AUDIT_WRITE 29 |
333 | |
334 | #define CAP_AUDIT_CONTROL 30 |
335 | |
336 | #define CAP_SETFCAP 31 |
337 | |
338 | /* Override MAC access. |
339 | The base kernel enforces no MAC policy. |
340 | An LSM may enforce a MAC policy, and if it does and it chooses |
341 | to implement capability based overrides of that policy, this is |
342 | the capability it should use to do so. */ |
343 | |
344 | #define CAP_MAC_OVERRIDE 32 |
345 | |
346 | /* Allow MAC configuration or state changes. |
347 | The base kernel requires no MAC configuration. |
348 | An LSM may enforce a MAC policy, and if it does and it chooses |
349 | to implement capability based checks on modifications to that |
350 | policy or the data required to maintain it, this is the |
351 | capability it should use to do so. */ |
352 | |
353 | #define CAP_MAC_ADMIN 33 |
354 | |
355 | #define CAP_LAST_CAP CAP_MAC_ADMIN |
356 | |
357 | #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP) |
358 | |
359 | /* |
360 | * Bit location of each capability (used by user-space library and kernel) |
361 | */ |
362 | |
363 | #define CAP_TO_INDEX(x) ((x) >> 5) /* 1 << 5 == bits in __u32 */ |
364 | #define CAP_TO_MASK(x) (1 << ((x) & 31)) /* mask for indexed __u32 */ |
365 | |
366 | #ifdef __KERNEL__ |
367 | |
368 | /* |
369 | * Internal kernel functions only |
370 | */ |
371 | |
372 | #define CAP_FOR_EACH_U32(__capi) \ |
373 | for (__capi = 0; __capi < _KERNEL_CAPABILITY_U32S; ++__capi) |
374 | |
375 | /* |
376 | * CAP_FS_MASK and CAP_NFSD_MASKS: |
377 | * |
378 | * The fs mask is all the privileges that fsuid==0 historically meant. |
379 | * At one time in the past, that included CAP_MKNOD and CAP_LINUX_IMMUTABLE. |
380 | * |
381 | * It has never meant setting security.* and trusted.* xattrs. |
382 | * |
383 | * We could also define fsmask as follows: |
384 | * 1. CAP_FS_MASK is the privilege to bypass all fs-related DAC permissions |
385 | * 2. The security.* and trusted.* xattrs are fs-related MAC permissions |
386 | */ |
387 | |
388 | # define CAP_FS_MASK_B0 (CAP_TO_MASK(CAP_CHOWN) \ |
389 | | CAP_TO_MASK(CAP_MKNOD) \ |
390 | | CAP_TO_MASK(CAP_DAC_OVERRIDE) \ |
391 | | CAP_TO_MASK(CAP_DAC_READ_SEARCH) \ |
392 | | CAP_TO_MASK(CAP_FOWNER) \ |
393 | | CAP_TO_MASK(CAP_FSETID)) |
394 | |
395 | # define CAP_FS_MASK_B1 (CAP_TO_MASK(CAP_MAC_OVERRIDE)) |
396 | |
397 | #if _KERNEL_CAPABILITY_U32S != 2 |
398 | # error Fix up hand-coded capability macro initializers |
399 | #else /* HAND-CODED capability initializers */ |
400 | |
401 | # define CAP_EMPTY_SET ((kernel_cap_t){{ 0, 0 }}) |
402 | # define CAP_FULL_SET ((kernel_cap_t){{ ~0, ~0 }}) |
403 | # define CAP_INIT_EFF_SET ((kernel_cap_t){{ ~CAP_TO_MASK(CAP_SETPCAP), ~0 }}) |
404 | # define CAP_FS_SET ((kernel_cap_t){{ CAP_FS_MASK_B0 \ |
405 | | CAP_TO_MASK(CAP_LINUX_IMMUTABLE), \ |
406 | CAP_FS_MASK_B1 } }) |
407 | # define CAP_NFSD_SET ((kernel_cap_t){{ CAP_FS_MASK_B0 \ |
408 | | CAP_TO_MASK(CAP_SYS_RESOURCE), \ |
409 | CAP_FS_MASK_B1 } }) |
410 | |
411 | #endif /* _KERNEL_CAPABILITY_U32S != 2 */ |
412 | |
413 | #define CAP_INIT_INH_SET CAP_EMPTY_SET |
414 | |
415 | # define cap_clear(c) do { (c) = __cap_empty_set; } while (0) |
416 | # define cap_set_full(c) do { (c) = __cap_full_set; } while (0) |
417 | # define cap_set_init_eff(c) do { (c) = __cap_init_eff_set; } while (0) |
418 | |
419 | #define cap_raise(c, flag) ((c).cap[CAP_TO_INDEX(flag)] |= CAP_TO_MASK(flag)) |
420 | #define cap_lower(c, flag) ((c).cap[CAP_TO_INDEX(flag)] &= ~CAP_TO_MASK(flag)) |
421 | #define cap_raised(c, flag) ((c).cap[CAP_TO_INDEX(flag)] & CAP_TO_MASK(flag)) |
422 | |
423 | #define CAP_BOP_ALL(c, a, b, OP) \ |
424 | do { \ |
425 | unsigned __capi; \ |
426 | CAP_FOR_EACH_U32(__capi) { \ |
427 | c.cap[__capi] = a.cap[__capi] OP b.cap[__capi]; \ |
428 | } \ |
429 | } while (0) |
430 | |
431 | #define CAP_UOP_ALL(c, a, OP) \ |
432 | do { \ |
433 | unsigned __capi; \ |
434 | CAP_FOR_EACH_U32(__capi) { \ |
435 | c.cap[__capi] = OP a.cap[__capi]; \ |
436 | } \ |
437 | } while (0) |
438 | |
439 | static inline kernel_cap_t cap_combine(const kernel_cap_t a, |
440 | const kernel_cap_t b) |
441 | { |
442 | kernel_cap_t dest; |
443 | CAP_BOP_ALL(dest, a, b, |); |
444 | return dest; |
445 | } |
446 | |
447 | static inline kernel_cap_t cap_intersect(const kernel_cap_t a, |
448 | const kernel_cap_t b) |
449 | { |
450 | kernel_cap_t dest; |
451 | CAP_BOP_ALL(dest, a, b, &); |
452 | return dest; |
453 | } |
454 | |
455 | static inline kernel_cap_t cap_drop(const kernel_cap_t a, |
456 | const kernel_cap_t drop) |
457 | { |
458 | kernel_cap_t dest; |
459 | CAP_BOP_ALL(dest, a, drop, &~); |
460 | return dest; |
461 | } |
462 | |
463 | static inline kernel_cap_t cap_invert(const kernel_cap_t c) |
464 | { |
465 | kernel_cap_t dest; |
466 | CAP_UOP_ALL(dest, c, ~); |
467 | return dest; |
468 | } |
469 | |
470 | static inline int cap_isclear(const kernel_cap_t a) |
471 | { |
472 | unsigned __capi; |
473 | CAP_FOR_EACH_U32(__capi) { |
474 | if (a.cap[__capi] != 0) |
475 | return 0; |
476 | } |
477 | return 1; |
478 | } |
479 | |
480 | /* |
481 | * Check if "a" is a subset of "set". |
482 | * return 1 if ALL of the capabilities in "a" are also in "set" |
483 | * cap_issubset(0101, 1111) will return 1 |
484 | * return 0 if ANY of the capabilities in "a" are not in "set" |
485 | * cap_issubset(1111, 0101) will return 0 |
486 | */ |
487 | static inline int cap_issubset(const kernel_cap_t a, const kernel_cap_t set) |
488 | { |
489 | kernel_cap_t dest; |
490 | dest = cap_drop(a, set); |
491 | return cap_isclear(dest); |
492 | } |
493 | |
494 | /* Used to decide between falling back on the old suser() or fsuser(). */ |
495 | |
496 | static inline int cap_is_fs_cap(int cap) |
497 | { |
498 | const kernel_cap_t __cap_fs_set = CAP_FS_SET; |
499 | return !!(CAP_TO_MASK(cap) & __cap_fs_set.cap[CAP_TO_INDEX(cap)]); |
500 | } |
501 | |
502 | static inline kernel_cap_t cap_drop_fs_set(const kernel_cap_t a) |
503 | { |
504 | const kernel_cap_t __cap_fs_set = CAP_FS_SET; |
505 | return cap_drop(a, __cap_fs_set); |
506 | } |
507 | |
508 | static inline kernel_cap_t cap_raise_fs_set(const kernel_cap_t a, |
509 | const kernel_cap_t permitted) |
510 | { |
511 | const kernel_cap_t __cap_fs_set = CAP_FS_SET; |
512 | return cap_combine(a, |
513 | cap_intersect(permitted, __cap_fs_set)); |
514 | } |
515 | |
516 | static inline kernel_cap_t cap_drop_nfsd_set(const kernel_cap_t a) |
517 | { |
518 | const kernel_cap_t __cap_fs_set = CAP_NFSD_SET; |
519 | return cap_drop(a, __cap_fs_set); |
520 | } |
521 | |
522 | static inline kernel_cap_t cap_raise_nfsd_set(const kernel_cap_t a, |
523 | const kernel_cap_t permitted) |
524 | { |
525 | const kernel_cap_t __cap_nfsd_set = CAP_NFSD_SET; |
526 | return cap_combine(a, |
527 | cap_intersect(permitted, __cap_nfsd_set)); |
528 | } |
529 | |
530 | extern const kernel_cap_t __cap_empty_set; |
531 | extern const kernel_cap_t __cap_full_set; |
532 | extern const kernel_cap_t __cap_init_eff_set; |
533 | |
534 | /** |
535 | * has_capability - Determine if a task has a superior capability available |
536 | * @t: The task in question |
537 | * @cap: The capability to be tested for |
538 | * |
539 | * Return true if the specified task has the given superior capability |
540 | * currently in effect, false if not. |
541 | * |
542 | * Note that this does not set PF_SUPERPRIV on the task. |
543 | */ |
544 | #define has_capability(t, cap) (security_real_capable((t), (cap)) == 0) |
545 | |
546 | /** |
547 | * has_capability_noaudit - Determine if a task has a superior capability available (unaudited) |
548 | * @t: The task in question |
549 | * @cap: The capability to be tested for |
550 | * |
551 | * Return true if the specified task has the given superior capability |
552 | * currently in effect, false if not, but don't write an audit message for the |
553 | * check. |
554 | * |
555 | * Note that this does not set PF_SUPERPRIV on the task. |
556 | */ |
557 | #define has_capability_noaudit(t, cap) \ |
558 | (security_real_capable_noaudit((t), (cap)) == 0) |
559 | |
560 | extern int capable(int cap); |
561 | |
562 | /* audit system wants to get cap info from files as well */ |
563 | struct dentry; |
564 | extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps); |
565 | |
566 | #endif /* __KERNEL__ */ |
567 | |
568 | #endif /* !_LINUX_CAPABILITY_H */ |
569 |
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