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-rw-r--r--include/linux/capability.h26
1 files changed, 23 insertions, 3 deletions
diff --git a/include/linux/capability.h b/include/linux/capability.h
index ffe7bab8c3a0..7d50ff6d269f 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -315,7 +315,24 @@ typedef struct kernel_cap_struct {
315 315
316#define CAP_SETFCAP 31 316#define CAP_SETFCAP 31
317 317
318#define CAP_LAST_CAP CAP_SETFCAP 318/* Override MAC access.
319 The base kernel enforces no MAC policy.
320 An LSM may enforce a MAC policy, and if it does and it chooses
321 to implement capability based overrides of that policy, this is
322 the capability it should use to do so. */
323
324#define CAP_MAC_OVERRIDE 32
325
326/* Allow MAC configuration or state changes.
327 The base kernel requires no MAC configuration.
328 An LSM may enforce a MAC policy, and if it does and it chooses
329 to implement capability based checks on modifications to that
330 policy or the data required to maintain it, this is the
331 capability it should use to do so. */
332
333#define CAP_MAC_ADMIN 33
334
335#define CAP_LAST_CAP CAP_MAC_ADMIN
319 336
320#define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP) 337#define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP)
321 338
@@ -341,6 +358,8 @@ typedef struct kernel_cap_struct {
341 | CAP_TO_MASK(CAP_FOWNER) \ 358 | CAP_TO_MASK(CAP_FOWNER) \
342 | CAP_TO_MASK(CAP_FSETID)) 359 | CAP_TO_MASK(CAP_FSETID))
343 360
361# define CAP_FS_MASK_B1 (CAP_TO_MASK(CAP_MAC_OVERRIDE))
362
344#if _LINUX_CAPABILITY_U32S != 2 363#if _LINUX_CAPABILITY_U32S != 2
345# error Fix up hand-coded capability macro initializers 364# error Fix up hand-coded capability macro initializers
346#else /* HAND-CODED capability initializers */ 365#else /* HAND-CODED capability initializers */
@@ -348,8 +367,9 @@ typedef struct kernel_cap_struct {
348# define CAP_EMPTY_SET {{ 0, 0 }} 367# define CAP_EMPTY_SET {{ 0, 0 }}
349# define CAP_FULL_SET {{ ~0, ~0 }} 368# define CAP_FULL_SET {{ ~0, ~0 }}
350# define CAP_INIT_EFF_SET {{ ~CAP_TO_MASK(CAP_SETPCAP), ~0 }} 369# define CAP_INIT_EFF_SET {{ ~CAP_TO_MASK(CAP_SETPCAP), ~0 }}
351# define CAP_FS_SET {{ CAP_FS_MASK_B0, 0 }} 370# define CAP_FS_SET {{ CAP_FS_MASK_B0, CAP_FS_MASK_B1 } }
352# define CAP_NFSD_SET {{ CAP_FS_MASK_B0|CAP_TO_MASK(CAP_SYS_RESOURCE), 0 }} 371# define CAP_NFSD_SET {{ CAP_FS_MASK_B0|CAP_TO_MASK(CAP_SYS_RESOURCE), \
372 CAP_FS_MASK_B1 } }
353 373
354#endif /* _LINUX_CAPABILITY_U32S != 2 */ 374#endif /* _LINUX_CAPABILITY_U32S != 2 */
355 375