From dc3988c38546c37a02030af8201048272caa7ded Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Fri, 22 Nov 2013 13:13:54 +0100
Subject: [PATCH] cleanup debug level handover

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 initd/preinit.c | 29 ++++++++++++++++++++++++-----
 procd.c         |  6 ++++++
 2 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/initd/preinit.c b/initd/preinit.c
index c5f7ada..fb94527 100644
--- a/initd/preinit.c
+++ b/initd/preinit.c
@@ -30,12 +30,29 @@
 static struct uloop_process preinit_proc;
 static struct uloop_process plugd_proc;
 
+static void
+check_dbglvl(void)
+{
+	FILE *fp = fopen("/tmp/debug_level", "r");
+	int lvl = 0;
+
+	if (!fp)
+		return;
+	fscanf(fp, "%d", &lvl);
+	fclose(fp);
+	unlink("/tmp/debug_level");
+
+	if (lvl > 0 && lvl < 5)
+		debug = lvl;
+}
+
 static void
 spawn_procd(struct uloop_process *proc, int ret)
 {
 	char *wdt_fd = watchdog_fd();
-	char *argv[] = { "/sbin/procd", "-d", "0", NULL };
+	char *argv[] = { "/sbin/procd", NULL};
 	struct stat s;
+	char dbg[2];
 
 	if (plugd_proc.pid > 0)
 		kill(plugd_proc.pid, SIGKILL);
@@ -49,10 +66,12 @@ spawn_procd(struct uloop_process *proc, int ret)
 	DEBUG(2, "Exec to real procd now\n");
 	if (wdt_fd)
 		setenv("WDTFD", wdt_fd, 1);
-	if (debug)
-		snprintf(argv[2], 2, "%d", debug & 0xf);
-	else
-		argv[1] = NULL;
+	check_dbglvl();
+	if (debug > 0) {
+		snprintf(dbg, 2, "%d", debug);
+		setenv("DBGLVL", dbg, 1);
+	}
+
 	execvp(argv[0], argv);
 }
 
diff --git a/procd.c b/procd.c
index 6fb0a72..ad80284 100644
--- a/procd.c
+++ b/procd.c
@@ -40,6 +40,12 @@ static int usage(const char *prog)
 int main(int argc, char **argv)
 {
 	int ch;
+	char *dbglvl = getenv("DBGLVL");
+
+	if (dbglvl) {
+		debug = atoi(dbglvl);
+		unsetenv("DBGLVL");
+	}
 
 	while ((ch = getopt(argc, argv, "d:s:h:")) != -1) {
 		switch (ch) {
-- 
2.25.1