udevd: add udevcontrol

Controls the behavior of the running daemon. Currently only stopping and starting
of the execution queue is supported.

Signed-off-by: Kay Sievers <kay.sievers@suse.de>

1 files changed, 107 insertions, 0 deletions

diff --git a/udevcontrol.c b/udevcontrol.c
new file mode 100644
index 0000000000..6a278a04c1
--- /dev/null
+++ b/udevcontrol.c
@@ -0,0 +1,107 @@
+/*
+ * udevcontrol.c
+ *
+ * Userspace devfs
+ *
+ * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ *
+ *	This program is free software; you can redistribute it and/or modify it
+ *	under the terms of the GNU General Public License as published by the
+ *	Free Software Foundation version 2 of the License.
+ * 
+ *	This program is distributed in the hope that it will be useful, but
+ *	WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *	General Public License for more details.
+ * 
+ *	You should have received a copy of the GNU General Public License along
+ *	with this program; if not, write to the Free Software Foundation, Inc.,
+ *	675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <sys/un.h>
+#include <time.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <unistd.h>
+#include <linux/stddef.h>
+
+#include "udev.h"
+#include "udev_version.h"
+#include "udevd.h"
+#include "logging.h"
+
+/* global variables */
+static int sock = -1;
+
+#ifdef USE_LOG
+void log_message (int level, const char *format, ...)
+{
+	va_list	args;
+
+	va_start(args, format);
+	vsyslog(level, format, args);
+	va_end(args);
+}
+#endif
+
+
+int main(int argc, char *argv[], char *envp[])
+{
+	static struct udevd_msg usend_msg;
+	struct sockaddr_un saddr;
+	socklen_t addrlen;
+	int retval = 1;
+
+	logging_init("udevcontrol");
+	dbg("version %s", UDEV_VERSION);
+
+	if (argc != 2) {
+		info("usage: udevcontrol <cmd>\n");
+		goto exit;
+	}
+
+	memset(&usend_msg, 0x00, sizeof(struct udevd_msg));
+	strcpy(usend_msg.magic, UDEV_MAGIC);
+
+	if (strstr(argv[1], "stop_exec_queue"))
+		usend_msg.type = UDEVD_STOP_EXEC_QUEUE;
+	else if (strstr(argv[1], "start_exec_queue"))
+		usend_msg.type = UDEVD_START_EXEC_QUEUE;
+	else {
+		info("unknown command\n");
+		goto exit;
+	}
+
+	sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
+	if (sock == -1) {
+		info("error getting socket");
+		goto exit;
+	}
+
+	memset(&saddr, 0x00, sizeof(struct sockaddr_un));
+	saddr.sun_family = AF_LOCAL;
+	/* use abstract namespace for socket path */
+	strcpy(&saddr.sun_path[1], UDEVD_SOCK_PATH);
+	addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(saddr.sun_path+1) + 1;
+
+
+	retval = sendto(sock, &usend_msg, sizeof(usend_msg), 0, (struct sockaddr *)&saddr, addrlen);
+	if (retval == -1)
+		info("error sending message (%s)", strerror(errno));
+
+	close(sock);
+
+exit:
+	logging_close();
+
+	return retval;
+}