Use strlen even for constant strings

GCC optimizes strlen("string constant") to a constant, even with -O0.
Thus, replace patterns like sizeof("string constant")-1 with
strlen("string constant") where possible, for clarity.  In particular,
for expressions intended to add up the lengths of components going into
a string, this often makes it clearer that the expression counts the
trailing '\0' exactly once, by putting the +1 for the '\0' at the end of
the expression, rather than hidden in a sizeof in the middle of the
expression.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/core/dbus.c b/src/core/dbus.c
index 03f3738abc..72f36bdc1c 100644
--- a/src/core/dbus.c
+++ b/src/core/dbus.c
@@ -953,7 +953,7 @@ static int bus_init_private(Manager *m) {
                         return 0;
 
                 strcpy(sa.un.sun_path, "/run/systemd/private");
-                salen = offsetof(union sockaddr_union, un.sun_path) + sizeof("/run/systemd/private") - 1;
+                salen = offsetof(union sockaddr_union, un.sun_path) + strlen("/run/systemd/private");
         } else {
                 size_t left = sizeof(sa.un.sun_path);
                 char *p = sa.un.sun_path;
diff --git a/src/core/service.c b/src/core/service.c
index 121ddec6ad..41b95ab0f3 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -361,7 +361,7 @@ static int service_arm_timer(Service *s, usec_t usec) {
 static char *sysv_translate_name(const char *name) {
         char *r;
 
-        r = new(char, strlen(name) + sizeof(".service"));
+        r = new(char, strlen(name) + strlen(".service") + 1);
         if (!r)
                 return NULL;