src/common/credentials.c

   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 <assert.h>
   9 #include <stdbool.h>
  10 #include "credentials.h"
  11
  12 uid_t lttng_credentials_get_uid(const struct lttng_credentials *creds)
  13 {
  14         return LTTNG_OPTIONAL_GET(creds->uid);
  15 }
  16
  17 gid_t lttng_credentials_get_gid(const struct lttng_credentials *creds)
  18 {
  19         return LTTNG_OPTIONAL_GET(creds->gid);
  20 }
  21
  22 bool lttng_credentials_is_equal_uid(const struct lttng_credentials *a,
  23                 const struct lttng_credentials *b)
  24 {
  25         assert(a);
  26         assert(b);
  27
  28         /* XOR on the is_set value */
  29         if (!!a->uid.is_set != !!b->uid.is_set) {
  30                 return false;
  31         }
  32
  33         if (!a->uid.is_set && !b->uid.is_set) {
  34                 return true;
  35         }
  36
  37         /* Both a and b are set. */
  38         return a->uid.value == b->uid.value;
  39 }
  40
  41 bool lttng_credentials_is_equal_gid(const struct lttng_credentials *a,
  42                 const struct lttng_credentials *b)
  43 {
  44         assert(a);
  45         assert(b);
  46
  47         /* XOR on the is_set value */
  48         if (!!a->gid.is_set != !!b->gid.is_set) {
  49                 return false;
  50         }
  51
  52         if (!a->gid.is_set && !b->gid.is_set) {
  53                 return true;
  54         }
  55
  56         /* Both a and b are set. */
  57         return a->gid.value == b->gid.value;
  58 }
  59
  60 bool lttng_credentials_is_equal(const struct lttng_credentials *a,
  61                 const struct lttng_credentials *b)
  62 {
  63         assert(a);
  64         assert(b);
  65
  66         return lttng_credentials_is_equal_uid(a, b) &&
  67                         lttng_credentials_is_equal_gid(a, b);
  68 }