util: rename join() to strjoin()

This is to match strappend() and the other string related functions.

src/shared/cgroup-util.c

@@ -522,16 +522,16 @@ static int join_path(const char *controller, const char *path, const char *suffi
 
         if (controller) {
                 if (path && suffix)
-                        t = join("/sys/fs/cgroup/", controller, "/", path, "/", suffix, NULL);
+                        t = strjoin("/sys/fs/cgroup/", controller, "/", path, "/", suffix, NULL);
                 else if (path)
-                        t = join("/sys/fs/cgroup/", controller, "/", path, NULL);
+                        t = strjoin("/sys/fs/cgroup/", controller, "/", path, NULL);
                 else if (suffix)
-                        t = join("/sys/fs/cgroup/", controller, "/", suffix, NULL);
+                        t = strjoin("/sys/fs/cgroup/", controller, "/", suffix, NULL);
                 else
-                        t = join("/sys/fs/cgroup/", controller, NULL);
+                        t = strjoin("/sys/fs/cgroup/", controller, NULL);
         } else {
                 if (path && suffix)
-                        t = join(path, "/", suffix, NULL);
+                        t = strjoin(path, "/", suffix, NULL);
                 else if (path)
                         t = strdup(path);
         }

src/shared/conf-parser.c

@@ -90,7 +90,7 @@ int config_item_perf_lookup(
         else {
                 char *key;
 
-                key = join(section, ".", lvalue, NULL);
+                key = strjoin(section, ".", lvalue, NULL);
                 if (!key)
                         return -ENOMEM;
 

src/shared/hwclock.c

@@ -74,7 +74,7 @@ static int rtc_open(int flags) {
                 if (ignore_file(de->d_name))
                         continue;
 
-                p = join("/sys/class/rtc/", de->d_name, "/hctosys", NULL);
+                p = strjoin("/sys/class/rtc/", de->d_name, "/hctosys", NULL);
                 if (!p) {
                         closedir(d);
                         return -ENOMEM;

src/shared/path-util.c

@@ -120,7 +120,7 @@ char *path_make_absolute(const char *p, const char *prefix) {
         if (path_is_absolute(p) || !prefix)
                 return strdup(p);
 
-        return join(prefix, "/", p, NULL);
+        return strjoin(prefix, "/", p, NULL);
 }
 
 char *path_make_absolute_cwd(const char *p) {

src/shared/unit-name.c

@@ -208,7 +208,7 @@ char *unit_name_build(const char *prefix, const char *instance, const char *suff
         if (!instance)
                 return strappend(prefix, suffix);
 
-        return join(prefix, "@", instance, suffix, NULL);
+        return strjoin(prefix, "@", instance, suffix, NULL);
 }
 
 static char *do_escape_char(char c, char *t) {
@@ -425,7 +425,7 @@ char *unit_name_from_path_instance(const char *prefix, const char *path, const c
         if (!p)
                 return NULL;
 
-        r = join(prefix, "@", p, suffix, NULL);
+        r = strjoin(prefix, "@", p, suffix, NULL);
         free(p);
 
         return r;

src/shared/util.c

@@ -1083,7 +1083,7 @@ int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char *
                 if (h < 0)
                         return h;
 
-                r = join("[", t, "]", NULL);
+                r = strjoin("[", t, "]", NULL);
                 free(t);
 
                 if (!r)
@@ -5145,7 +5145,7 @@ finish:
         return r;
 }
 
-char *join(const char *x, ...) {
+char *strjoin(const char *x, ...) {
         va_list ap;
         size_t l;
         char *r, *p;

src/shared/util.h

@@ -451,7 +451,7 @@ int dirent_ensure_type(DIR *d, struct dirent *de);
 int in_search_path(const char *path, char **search);
 int get_files_in_directory(const char *path, char ***list);
 
-char *join(const char *x, ...) _sentinel_;
+char *strjoin(const char *x, ...) _sentinel_;
 
 bool is_main_thread(void);