src/common/credentials.cpp

   1 /*
   2  * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #include <stdbool.h>
   9 #include "credentials.hpp"
  10
  11 uid_t lttng_credentials_get_uid(const struct lttng_credentials *creds)
  12 {
  13         return LTTNG_OPTIONAL_GET(creds->uid);
  14 }
  15
  16 gid_t lttng_credentials_get_gid(const struct lttng_credentials *creds)
  17 {
  18         return LTTNG_OPTIONAL_GET(creds->gid);
  19 }
  20
  21 bool lttng_credentials_is_equal_uid(const struct lttng_credentials *a,
  22                 const struct lttng_credentials *b)
  23 {
  24         LTTNG_ASSERT(a);
  25         LTTNG_ASSERT(b);
  26
  27         /* XOR on the is_set value */
  28         if (!!a->uid.is_set != !!b->uid.is_set) {
  29                 return false;
  30         }
  31
  32         if (!a->uid.is_set && !b->uid.is_set) {
  33                 return true;
  34         }
  35
  36         /* Both a and b are set. */
  37         return a->uid.value == b->uid.value;
  38 }
  39
  40 bool lttng_credentials_is_equal_gid(const struct lttng_credentials *a,
  41                 const struct lttng_credentials *b)
  42 {
  43         LTTNG_ASSERT(a);
  44         LTTNG_ASSERT(b);
  45
  46         /* XOR on the is_set value */
  47         if (!!a->gid.is_set != !!b->gid.is_set) {
  48                 return false;
  49         }
  50
  51         if (!a->gid.is_set && !b->gid.is_set) {
  52                 return true;
  53         }
  54
  55         /* Both a and b are set. */
  56         return a->gid.value == b->gid.value;
  57 }
  58
  59 bool lttng_credentials_is_equal(const struct lttng_credentials *a,
  60                 const struct lttng_credentials *b)
  61 {
  62         LTTNG_ASSERT(a);
  63         LTTNG_ASSERT(b);
  64
  65         return lttng_credentials_is_equal_uid(a, b) &&
  66                         lttng_credentials_is_equal_gid(a, b);
  67 }