Merge pull request #28919 from fbuihuu/custom-config-file-install-path

[thirdparty/systemd.git] / src / basic / pidref.h

diff --git a/src/basic/pidref.h b/src/basic/pidref.h
index 6998a865e7fd65ebe83e6f7afcef90a978e867f2..84f3dee12980f4145c9c2e0ed80fe765d1afb22a 100644 (file)
--- a/src/basic/pidref.h
+++ b/src/basic/pidref.h
@@ -3,7 +3,7 @@
 
 #include "macro.h"
 
-/* An embeddable structure carrying a reference to a process. Supposed to be used when tracking processes continously. */
+/* An embeddable structure carrying a reference to a process. Supposed to be used when tracking processes continuously. */
 typedef struct PidRef {
         pid_t pid; /* always valid */
         int fd;    /* only valid if pidfd are available in the kernel, and we manage to get an fd */
@@ -15,6 +15,18 @@ static inline bool pidref_is_set(const PidRef *pidref) {
         return pidref && pidref->pid > 0;
 }
 
+static inline bool pidref_equal(const PidRef *a, const PidRef *b) {
+
+        if (pidref_is_set(a)) {
+                if (!pidref_is_set(b))
+                        return false;
+
+                return a->pid == b->pid;
+        }
+
+        return !pidref_is_set(b);
+}
+
 int pidref_set_pid(PidRef *pidref, pid_t pid);
 int pidref_set_pidstr(PidRef *pidref, const char *pid);
 int pidref_set_pidfd(PidRef *pidref, int fd);