Initial path support for user services in librc

This introduces new variables and functions to allow for setting paths
(RC_SVCDIR, RC_RUNLEVELDIR, RC_INITDIR and RC_CONFDIR) at runtime,
needed for user services. This also patches librc to use said functions
instead of the #define'd variables.

Signed-off-by: anna <anna@navirc.com>

Author: navi-desu

src/librc/librc-daemon.c

@@ -400,7 +400,7 @@ rc_service_daemon_set(const char *service, const char *exec,
 		return false;
 	}
 
-	xasprintf(&dirpath, RC_SVCDIR "/daemons/%s", basename_c(service));
+	xasprintf(&dirpath, "%s/daemons/%s", rc_svcdir_get(), basename_c(service));
 
 	/* Regardless, erase any existing daemon info */
 	if ((dp = opendir(dirpath))) {
@@ -470,7 +470,7 @@ rc_service_started_daemon(const char *service,
 	if (!service || !exec)
 		return false;
 
-	xasprintf(&dirpath, RC_SVCDIR "/daemons/%s", basename_c(service));
+	xasprintf(&dirpath, "%s/daemons/%s", rc_svcdir_get(), basename_c(service));
 	match = _match_list(exec, argv, NULL);
 
 	if (indx > 0) {
@@ -522,8 +522,8 @@ rc_service_daemons_crashed(const char *service)
 	char *ch_root;
 	char *spidfile;
 
-	path += snprintf(dirpath, sizeof(dirpath), RC_SVCDIR "/daemons/%s",
-	    basename_c(service));
+	path += snprintf(dirpath, sizeof(dirpath), "%s/daemons/%s",
+	    rc_svcdir_get(), basename_c(service));
 
 	if (!(dp = opendir(dirpath)))
 		return false;

src/librc/librc-depend.c

@@ -22,7 +22,14 @@
 
 #define GENDEP          RC_LIBEXECDIR "/sh/gendepends.sh"
 
-#define RC_DEPCONFIG    RC_SVCDIR "/depconfig"
+#define RC_DEPCONFIG    "/depconfig"
+
+static char*
+depconfigpath_get() {
+	char *path = xmalloc(sizeof(char) * PATH_MAX);
+	snprintf(path, PATH_MAX, "%s/%s", rc_svcdir_get(), RC_DEPCONFIG);
+	return path;
+}
 
 static const char *bootlevel = NULL;
 
@@ -655,19 +662,19 @@ static const DEPPAIR deppairs[] = {
 
 static const char *const depdirs[] =
 {
-	RC_SVCDIR,
-	RC_SVCDIR "/starting",
-	RC_SVCDIR "/started",
-	RC_SVCDIR "/stopping",
-	RC_SVCDIR "/inactive",
-	RC_SVCDIR "/wasinactive",
-	RC_SVCDIR "/failed",
-	RC_SVCDIR "/hotplugged",
-	RC_SVCDIR "/daemons",
-	RC_SVCDIR "/options",
-	RC_SVCDIR "/exclusive",
-	RC_SVCDIR "/scheduled",
-	RC_SVCDIR "/tmp",
+	"",
+	"starting",
+	"started",
+	"stopping",
+	"inactive",
+	"wasinactive",
+	"failed",
+	"hotplugged",
+	"daemons",
+	"options",
+	"exclusive",
+	"scheduled",
+	"tmp",
 	NULL
 };
 
@@ -682,9 +689,13 @@ rc_deptree_update_needed(time_t *newest, char *file)
 	time_t mtime;
 
 	/* Create base directories if needed */
-	for (i = 0; depdirs[i]; i++)
-		if (mkdir(depdirs[i], 0755) != 0 && errno != EEXIST)
-			fprintf(stderr, "mkdir `%s': %s\n", depdirs[i], strerror(errno));
+	char *depdir = xmalloc(sizeof(char) * PATH_MAX);
+	for (i = 0; depdirs[i]; i++) {
+		snprintf(depdir, PATH_MAX, "%s/%s", rc_svcdir_get(), depdirs[i]);
+		if (mkdir(depdir, 0755) != 0 && errno != EEXIST)
+			fprintf(stderr, "mkdir `%s': %s\n", depdir, strerror(errno));
+	}
+	free(depdir);
 
 	/* Quick test to see if anything we use has changed and we have
 	 * data in our deptree. */
@@ -700,8 +711,8 @@ rc_deptree_update_needed(time_t *newest, char *file)
 		mtime = time(NULL);
 	}
 
-	newer |= !deep_mtime_check(RC_INITDIR,true,&mtime,file);
-	newer |= !deep_mtime_check(RC_CONFDIR,true,&mtime,file);
+	newer |= !deep_mtime_check(rc_initdir_get(),true,&mtime,file);
+	newer |= !deep_mtime_check(rc_confdir_get(),true,&mtime,file);
 #ifdef RC_PKG_INITDIR
     newer |= !deep_mtime_check(RC_PKG_INITDIR,true,&mtime,file);
 #endif
@@ -718,7 +729,9 @@ rc_deptree_update_needed(time_t *newest, char *file)
 
 	/* Some init scripts dependencies change depending on config files
 	 * outside of baselayout, like syslog-ng, so we check those too. */
-	config = rc_config_list(RC_DEPCONFIG);
+	char *depconf = depconfigpath_get();
+	config = rc_config_list(depconf);
+	free(depconf);
 	TAILQ_FOREACH(s, config, entries) {
 		newer |= !deep_mtime_check(s->value, true, &mtime, file);
 	}
@@ -1059,19 +1072,21 @@ rc_deptree_update(void)
 	}
 
 	/* Save our external config files to disk */
+	char *depconf = depconfigpath_get();
 	if (TAILQ_FIRST(config)) {
-		if ((fp = fopen(RC_DEPCONFIG, "w"))) {
+		if ((fp = fopen(depconf, "w"))) {
 			TAILQ_FOREACH(s, config, entries)
 				fprintf(fp, "%s\n", s->value);
 			fclose(fp);
 		} else {
 			fprintf(stderr, "fopen `%s': %s\n",
-				RC_DEPCONFIG, strerror(errno));
+				depconf, strerror(errno));
 			retval = false;
 		}
 	} else {
-		unlink(RC_DEPCONFIG);
+		unlink(depconf);
 	}
+	free(depconf);
 
 	rc_stringlist_free(config);
 	free(deptree);