procd: add support for alternative rc.d directories

package/system/procd/patches/0001-Add-support-for-alternative-rc.d-directories.patch

@@ -0,0 +1,80 @@
+From 03a2bc70e4260ec9f669391c47b9a7a9ecd0b75d Mon Sep 17 00:00:00 2001
+Message-Id: <03a2bc70e4260ec9f669391c47b9a7a9ecd0b75d.1407329621.git.mschiffer@universe-factory.net>
+From: Matthias Schiffer <mschiffer@universe-factory.net>
+Date: Wed, 6 Aug 2014 14:51:49 +0200
+Subject: [PATCH] Add support for alternative rc.d directories
+
+---
+ initd/preinit.c | 38 ++++++++++++++++++++++++++++++++++++++
+ rcS.c           |  2 +-
+ 2 files changed, 39 insertions(+), 1 deletion(-)
+
+--- a/initd/preinit.c
++++ b/initd/preinit.c
+@@ -87,12 +87,42 @@ fail:
+ 	free(command);
+ }
+ 
++static char*
++get_rc_d(void)
++{
++	size_t n = 0;
++	ssize_t len;
++	char *ret = NULL;
++
++	FILE *fp = fopen("/tmp/rc_d_path", "r");
++
++	if (!fp)
++		return NULL;
++
++	len = getline(&ret, &n, fp);
++
++	fclose(fp);
++
++	unlink("/tmp/rc_d_path");
++
++	if (len <= 0) {
++		free(ret);
++		return NULL;
++	}
++
++	if (ret[len-1] == '\n')
++		ret[len-1] = 0;
++
++	return ret;
++}
++
+ static void
+ spawn_procd(struct uloop_process *proc, int ret)
+ {
+ 	char *wdt_fd = watchdog_fd();
+ 	char *argv[] = { "/sbin/procd", NULL};
+ 	char dbg[2];
++	char *rc_d_path;
+ 
+ 	if (plugd_proc.pid > 0)
+ 		kill(plugd_proc.pid, SIGKILL);
+@@ -112,6 +142,12 @@ spawn_procd(struct uloop_process *proc,
+ 		setenv("DBGLVL", dbg, 1);
+ 	}
+ 
++	rc_d_path = get_rc_d();
++	if (rc_d_path) {
++		setenv("RC_D_PATH", rc_d_path, 1);
++		free(rc_d_path);
++	}
++
+ 	execvp(argv[0], argv);
+ }
+ 
+--- a/rcS.c
++++ b/rcS.c
+@@ -184,7 +184,7 @@ int rcS(char *pattern, char *param, void
+ 	q.empty_cb = q_empty;
+ 	q.max_running_tasks = 1;
+ 
+-	return _rc(&q, "/etc/rc.d", pattern, "*", param);
++	return _rc(&q, getenv("RC_D_PATH") ?: "/etc/rc.d", pattern, "*", param);
+ }
+ 
+ int rc(const char *file, char *param)