From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 21 Aug 2014 14:15:49 +0000 (+0200)
Subject: core: unify how we generate the prefix string when dumping unit state
X-Git-Tag: v217~806
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=4c94096027f21d4ed0efe991534a926d39d52369

core: unify how we generate the prefix string when dumping unit state
---

diff --git a/src/core/execute.c b/src/core/execute.c
index d8452a666..2544a2470 100644
--- a/src/core/execute.c
+++ b/src/core/execute.c
@@ -2398,12 +2398,11 @@ void exec_status_dump(ExecStatus *s, FILE *f, const char *prefix) {
         assert(s);
         assert(f);
 
-        if (!prefix)
-                prefix = "";
-
         if (s->pid <= 0)
                 return;
 
+        prefix = strempty(prefix);
+
         fprintf(f,
                 "%sPID: "PID_FMT"\n",
                 prefix, s->pid);
@@ -2463,21 +2462,16 @@ char *exec_command_line(char **argv) {
 }
 
 void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) {
-        _cleanup_free_ char *p2 = NULL;
-        const char *prefix2;
-
         _cleanup_free_ char *cmd = NULL;
+        const char *prefix2;
 
         assert(c);
         assert(f);
 
-        if (!prefix)
-                prefix = "";
-        p2 = strappend(prefix, "\t");
-        prefix2 = p2 ? p2 : prefix;
+        prefix = strempty(prefix);
+        prefix2 = strappenda(prefix, "\t");
 
         cmd = exec_command_line(c->argv);
-
         fprintf(f,
                 "%sCommand Line: %s\n",
                 prefix, cmd ? cmd : strerror(ENOMEM));
@@ -2488,8 +2482,7 @@ void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) {
 void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix) {
         assert(f);
 
-        if (!prefix)
-                prefix = "";
+        prefix = strempty(prefix);
 
         LIST_FOREACH(command, c, c)
                 exec_command_dump(c, f, prefix);
diff --git a/src/core/service.c b/src/core/service.c
index 6a4665a1a..887b1c851 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -463,16 +463,14 @@ static int service_load(Unit *u) {
 }
 
 static void service_dump(Unit *u, FILE *f, const char *prefix) {
-
         ServiceExecCommand c;
         Service *s = SERVICE(u);
         const char *prefix2;
-        _cleanup_free_ char *p2 = NULL;
 
         assert(s);
 
-        p2 = strappend(prefix, "\t");
-        prefix2 = p2 ? p2 : prefix;
+        prefix = strempty(prefix);
+        prefix2 = strappenda(prefix, "\t");
 
         fprintf(f,
                 "%sService State: %s\n"
diff --git a/src/core/socket.c b/src/core/socket.c
index 1189f451d..7ca8edbda 100644
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -471,6 +471,7 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) {
         assert(s);
         assert(f);
 
+        prefix = strempty(prefix);
         prefix2 = strappenda(prefix, "\t");
 
         fprintf(f,
diff --git a/src/core/unit.c b/src/core/unit.c
index 08e74b416..56102b360 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -791,7 +791,6 @@ void unit_dump(Unit *u, FILE *f, const char *prefix) {
         char *t, **j;
         UnitDependency d;
         Iterator i;
-        _cleanup_free_ char *p2 = NULL;
         const char *prefix2;
         char
                 timestamp1[FORMAT_TIMESTAMP_MAX],
@@ -806,10 +805,8 @@ void unit_dump(Unit *u, FILE *f, const char *prefix) {
         assert(u);
         assert(u->type >= 0);
 
-        if (!prefix)
-                prefix = "";
-        p2 = strappend(prefix, "\t");
-        prefix2 = p2 ? p2 : prefix;
+        prefix = strempty(prefix);
+        prefix2 = strappenda(prefix, "\t");
 
         fprintf(f,
                 "%s-> Unit %s:\n"