From 962c6a5606a3e9f0bf2fc669eec3b7fc56471137 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Thu, 3 May 2018 16:38:57 +0900
Subject: [PATCH] util: rename signal_from_string_try_harder() to
 signal_from_string()

Also this makes the new `signal_from_string()` function reject
e.g, `SIG3` or `SIG+5`.
---
 src/basic/signal-util.c | 26 ++++++++++----------------
 1 file changed, 10 insertions(+), 16 deletions(-)

diff --git a/src/basic/signal-util.c b/src/basic/signal-util.c
index bf4816fd6..5bd5c71ce 100644
--- a/src/basic/signal-util.c
+++ b/src/basic/signal-util.c
@@ -234,11 +234,7 @@ int signal_from_string(const char *s) {
         const char *p;
         int signo, r;
 
-        /* Check that the input is a signal name. */
-        signo = __signal_from_string(s);
-        if (signo > 0)
-                return signo;
-
+        /* Check that the input is a signal number. */
         if (safe_atoi(s, &signo) >= 0) {
                 if (SIGNAL_VALID(signo))
                         return signo;
@@ -246,6 +242,15 @@ int signal_from_string(const char *s) {
                         return -ERANGE;
         }
 
+        /* Drop "SIG" prefix. */
+        if (startswith(s, "SIG"))
+                s += 3;
+
+        /* Check that the input is a signal name. */
+        signo = __signal_from_string(s);
+        if (signo > 0)
+                return signo;
+
         /* Check that the input is RTMIN or
          * RTMIN+n (0 <= n <= SIGRTMAX-SIGRTMIN). */
         p = startswith(s, "RTMIN");
@@ -287,17 +292,6 @@ int signal_from_string(const char *s) {
         return -EINVAL;
 }
 
-int signal_from_string_try_harder(const char *s) {
-        int signo;
-        assert(s);
-
-        signo = signal_from_string(s);
-        if (signo <= 0)
-                if (startswith(s, "SIG"))
-                        return signal_from_string(s+3);
-
-        return signo;
-}
 
 #if 0 /// UNNEEDED by elogind
 void nop_signal_handler(int sig) {
-- 
2.30.2