common: compile libcommon as C++

[lttng-tools.git] / src / common / credentials.cpp

diff --git a/src/common/credentials.cpp b/src/common/credentials.cpp
new file mode 100644 (file)
index 0000000..fd8b447
--- /dev/null
+++ b/src/common/credentials.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#include <stdbool.h>
+#include "credentials.h"
+
+uid_t lttng_credentials_get_uid(const struct lttng_credentials *creds)
+{
+       return LTTNG_OPTIONAL_GET(creds->uid);
+}
+
+gid_t lttng_credentials_get_gid(const struct lttng_credentials *creds)
+{
+       return LTTNG_OPTIONAL_GET(creds->gid);
+}
+
+bool lttng_credentials_is_equal_uid(const struct lttng_credentials *a,
+               const struct lttng_credentials *b)
+{
+       LTTNG_ASSERT(a);
+       LTTNG_ASSERT(b);
+
+       /* XOR on the is_set value */
+       if (!!a->uid.is_set != !!b->uid.is_set) {
+               return false;
+       }
+
+       if (!a->uid.is_set && !b->uid.is_set) {
+               return true;
+       }
+
+       /* Both a and b are set. */
+       return a->uid.value == b->uid.value;
+}
+
+bool lttng_credentials_is_equal_gid(const struct lttng_credentials *a,
+               const struct lttng_credentials *b)
+{
+       LTTNG_ASSERT(a);
+       LTTNG_ASSERT(b);
+
+       /* XOR on the is_set value */
+       if (!!a->gid.is_set != !!b->gid.is_set) {
+               return false;
+       }
+
+       if (!a->gid.is_set && !b->gid.is_set) {
+               return true;
+       }
+
+       /* Both a and b are set. */
+       return a->gid.value == b->gid.value;
+}
+
+bool lttng_credentials_is_equal(const struct lttng_credentials *a,
+               const struct lttng_credentials *b)
+{
+       LTTNG_ASSERT(a);
+       LTTNG_ASSERT(b);
+
+       return lttng_credentials_is_equal_uid(a, b) &&
+                       lttng_credentials_is_equal_gid(a, b);
+}