src/basic/capability-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <stdbool.h>
   5 #include <stdint.h>
   6 #include <sys/capability.h>
   7 #include <sys/types.h>
   8
   9 #include "macro.h"
  10 #include "util.h"
  11
  12 #define CAP_ALL (uint64_t) -1
  13
  14 unsigned long cap_last_cap(void);
  15 #if 0 /// UNNEEDED by elogind
  16 int have_effective_cap(int value);
  17 int capability_bounding_set_drop(uint64_t keep, bool right_now);
  18 int capability_bounding_set_drop_usermode(uint64_t keep);
  19
  20 int capability_ambient_set_apply(uint64_t set, bool also_inherit);
  21 int capability_update_inherited_set(cap_t caps, uint64_t ambient_set);
  22
  23 int drop_privileges(uid_t uid, gid_t gid, uint64_t keep_capabilities);
  24
  25 int drop_capability(cap_value_t cv);
  26
  27 DEFINE_TRIVIAL_CLEANUP_FUNC(cap_t, cap_free);
  28 #define _cleanup_cap_free_ _cleanup_(cap_freep)
  29
  30 static inline void cap_free_charpp(char **p) {
  31         if (*p)
  32                 cap_free(*p);
  33 }
  34 #define _cleanup_cap_free_charp_ _cleanup_(cap_free_charpp)
  35 #endif // 0
  36
  37 static inline bool cap_test_all(uint64_t caps) {
  38         uint64_t m;
  39         m = (UINT64_C(1) << (cap_last_cap() + 1)) - 1;
  40         return FLAGS_SET(caps, m);
  41 }
  42
  43 #if 0 /// UNNEEDED by elogind
  44 bool ambient_capabilities_supported(void);
  45 #endif // 0