Health check: implement health check query in sessiond and consumerd

[lttng-tools.git] / src / common / utils.c

diff --git a/src/common/utils.c b/src/common/utils.c
index dd9967312aca1be20253df8fd881c485858d0e6f..da4c036b9630a3ecddebd9aa74d419609705379d 100644 (file)
--- a/src/common/utils.c
+++ b/src/common/utils.c
@@ -27,6 +27,7 @@
 #include <unistd.h>
 #include <inttypes.h>
 #include <regex.h>
+#include <grp.h>
 
 #include <common/common.h>
 #include <common/runas.h>
@@ -694,3 +695,24 @@ size_t utils_get_current_time_str(const char *format, char *dst, size_t len)
 
        return ret;
 }
+
+/*
+ * Return the group ID matching name, else 0 if it cannot be found.
+ */
+LTTNG_HIDDEN
+gid_t utils_get_group_id(const char *name)
+{
+       struct group *grp;
+
+       grp = getgrnam(name);
+       if (!grp) {
+               static volatile int warn_once;
+
+               if (!warn_once) {
+                       WARN("No tracing group detected");
+                       warn_once = 1;
+               }
+               return 0;
+       }
+       return grp->gr_gid;
+}