udev: move dev.d/ handling to external helper

Modern rules are expected to call notification and postprocessing with    
the RUN key. For compatibility the current behavior can be emulated
with an external helper.

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

1 files changed, 78 insertions, 0 deletions

diff --git a/extras/run_directory/udev_run_devd.c b/extras/run_directory/udev_run_devd.c
new file mode 100644
index 0000000000..02bbc8c353
--- /dev/null
+++ b/extras/run_directory/udev_run_devd.c
@@ -0,0 +1,78 @@
+/*
+ * udev_run_devd.c - directory multiplexer
+ *
+ * Copyright (C) 2005 Kay Sievers <kay@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.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stddef.h>
+#include <dirent.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+
+#include "../../udev_utils.h"
+#include "../../list.h"
+#include "../../logging.h"
+
+extern int run_directory(const char *dir, const char *suffix, const char *subsystem);
+
+#ifdef USE_LOG
+void log_message (int priority, const char *format, ...)
+{
+	va_list args;
+	static int udev_log = -1;
+
+	if (udev_log == -1) {
+		const char *value;
+
+		value = getenv("UDEV_LOG");
+		if (value)
+			udev_log = log_priority(value);
+		else
+			udev_log = LOG_ERR;
+	}
+
+	if (priority > udev_log)
+		return;
+
+	va_start(args, format);
+	vsyslog(priority, format, args);
+	va_end(args);
+}
+#endif
+
+int main(int argc, char *argv[], char *envp[])
+{
+	const char *subsystem;
+	int fd;
+
+	if (getenv("DEVNAME") == NULL)
+		exit(0);
+
+	subsystem = argv[1];
+	logging_init("udev_run_devd");
+
+	fd = open("/dev/null", O_RDWR);
+	if (fd >= 0) {
+		dup2(fd, STDOUT_FILENO);
+		dup2(fd, STDIN_FILENO);
+		dup2(fd, STDERR_FILENO);
+		close(fd);
+	}
+	dbg("running dev.d directory");
+
+	run_directory("/etc/dev.d", ".dev", subsystem);
+	exit(0);
+}