plugins: skip plugin in rescue mode

These plugins should not run in rescue mode, because the system may be
in a very bad state and we do not want to make the situation any worse
than it already is.

Essentially, only services in rescue.conf should run in rescue mode.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

plugins/alsa-utils.c

@@ -30,6 +30,11 @@
 
 static void save(void *arg)
 {
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	if (whichp(ALSACTL)) {
 		_d("Saving sound settings ...");
 		run_interactive(ALSACTL " -g store", "Saving sound settings");
@@ -38,6 +43,11 @@ static void save(void *arg)
 
 static void restore(void *arg)
 {
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	if (whichp(ALSACTL)) {
 		_d("Restoring sound settings ...");
 		run_interactive(ALSACTL " -g restore", "Restoring sound settings");

plugins/dbus.c

@@ -43,6 +43,11 @@ static void setup(void *arg)
 	mode_t prev;
 	char *cmd;
 
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	cmd = which(DAEMON);
 	if (!cmd) {
 		_d("Skipping plugin, %s is not installed.", DAEMON);

plugins/hotplug.c

@@ -34,6 +34,11 @@ static void setup(void *arg)
 	char cmd[256];
 	char *path;
 
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	/*
 	 * Populate /dev and prepare for runtime events from kernel.
 	 * Prefer udev if mdev is also available on the system.

plugins/procps.c

@@ -23,6 +23,9 @@
 
 #include <glob.h>
 #include <lite/lite.h>
+
+#include "finit.h"
+#include "helpers.h"
 #include "plugin.h"
 
 static void setup(void *arg)
@@ -31,6 +34,11 @@ static void setup(void *arg)
 	glob_t gl;
 	char buf[160];
 
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	glob("/run/sysctl.d/*.conf",           0, NULL, &gl);
 	glob("/etc/sysctl.d/*.conf",           GLOB_APPEND, NULL, &gl);
 	glob("/usr/local/lib/sysctl.d/*.conf", GLOB_APPEND, NULL, &gl);

plugins/rtc.c

@@ -84,6 +84,11 @@ static void rtc_save(void *arg)
 	int fd, rc = 0;
 	char tz[128];
 
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	fd = rtc_open();
 	if (fd < 0)
 		return;
@@ -121,6 +126,11 @@ static void rtc_restore(void *arg)
 	int fd, rc = 0;
 	char tz[128];
 
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	fd = rtc_open();
 	if (fd < 0)
 		return;

plugins/urandom.c

@@ -35,6 +35,11 @@
 static void setup(void *arg)
 {
 #ifdef RANDOMSEED
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	if (!fexist(RANDOMSEED)) {
 		int ret = 1;
 		mode_t prev;
@@ -71,6 +76,11 @@ static void save(void *arg)
 #ifdef RANDOMSEED
 	mode_t prev;
 
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	prev = umask(077);
 
 	print_desc("Saving random seed", NULL);

plugins/x11-common.c

@@ -39,6 +39,11 @@ static void setup(void *arg)
 	int fd;
 #endif
 
+	if (rescue) {
+		_d("Skipping %s plugin in rescue mode.", __FILE__);
+		return;
+	}
+
 	prev = umask(0);
 
 	makedir("/var/run/console", 01777);