udevadm: rename source files

1 files changed, 289 insertions, 0 deletions

diff --git a/udev/udevadm-monitor.c b/udev/udevadm-monitor.c
new file mode 100644
index 0000000000..3b65bcae9b
--- /dev/null
+++ b/udev/udevadm-monitor.c
@@ -0,0 +1,289 @@
+/*
+ * Copyright (C) 2004-2006 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.,
+ *	51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <signal.h>
+#include <getopt.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/select.h>
+#include <linux/types.h>
+#include <linux/netlink.h>
+
+#include "udev.h"
+#include "udevd.h"
+
+static int uevent_netlink_sock = -1;
+static int udev_monitor_sock = -1;
+static volatile int udev_exit;
+
+static int init_udev_monitor_socket(void)
+{
+	struct sockaddr_un saddr;
+	socklen_t addrlen;
+	int retval;
+
+	memset(&saddr, 0x00, sizeof(saddr));
+	saddr.sun_family = AF_LOCAL;
+	/* use abstract namespace for socket path */
+	strcpy(&saddr.sun_path[1], "/org/kernel/udev/monitor");
+	addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + strlen(&saddr.sun_path[1]);
+
+	udev_monitor_sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
+	if (udev_monitor_sock == -1) {
+		fprintf(stderr, "error getting socket: %s\n", strerror(errno));
+		return -1;
+	}
+
+	/* the bind takes care of ensuring only one copy running */
+	retval = bind(udev_monitor_sock, (struct sockaddr *) &saddr, addrlen);
+	if (retval < 0) {
+		fprintf(stderr, "bind failed: %s\n", strerror(errno));
+		close(udev_monitor_sock);
+		udev_monitor_sock = -1;
+		return -1;
+	}
+
+	return 0;
+}
+
+static int init_uevent_netlink_sock(void)
+{
+	struct sockaddr_nl snl;
+	int retval;
+
+	memset(&snl, 0x00, sizeof(struct sockaddr_nl));
+	snl.nl_family = AF_NETLINK;
+	snl.nl_pid = getpid();
+	snl.nl_groups = 1;
+
+	uevent_netlink_sock = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT);
+	if (uevent_netlink_sock == -1) {
+		fprintf(stderr, "error getting socket: %s\n", strerror(errno));
+		return -1;
+	}
+
+	retval = bind(uevent_netlink_sock, (struct sockaddr *) &snl,
+		      sizeof(struct sockaddr_nl));
+	if (retval < 0) {
+		fprintf(stderr, "bind failed: %s\n", strerror(errno));
+		close(uevent_netlink_sock);
+		uevent_netlink_sock = -1;
+		return -1;
+	}
+
+	return 0;
+}
+
+static void asmlinkage sig_handler(int signum)
+{
+	if (signum == SIGINT || signum == SIGTERM)
+		udev_exit = 1;
+}
+
+static const char *search_key(const char *searchkey, const char *buf, size_t buflen)
+{
+	size_t bufpos = 0;
+	size_t searchkeylen = strlen(searchkey);
+
+	while (bufpos < buflen) {
+		const char *key;
+		int keylen;
+
+		key = &buf[bufpos];
+		keylen = strlen(key);
+		if (keylen == 0)
+			break;
+		 if ((strncmp(searchkey, key, searchkeylen) == 0) && key[searchkeylen] == '=')
+			return &key[searchkeylen + 1];
+		bufpos += keylen + 1;
+	}
+	return NULL;
+}
+
+int udevmonitor(int argc, char *argv[])
+{
+	struct sigaction act;
+	int option;
+	int env = 0;
+	int kernel = 0;
+	int udev = 0;
+	fd_set readfds;
+	int retval = 0;
+
+	static const struct option options[] = {
+		{ "environment", 0, NULL, 'e' },
+		{ "kernel", 0, NULL, 'k' },
+		{ "udev", 0, NULL, 'u' },
+		{ "help", 0, NULL, 'h' },
+		{}
+	};
+
+	while (1) {
+		option = getopt_long(argc, argv, "ekuh", options, NULL);
+		if (option == -1)
+			break;
+
+		switch (option) {
+		case 'e':
+			env = 1;
+			break;
+		case 'k':
+			kernel = 1;
+			break;
+		case 'u':
+			udev = 1;
+			break;
+		case 'h':
+			printf("Usage: udevadm monitor [--environment] [--kernel] [--udev] [--help]\n"
+			       "  --env    print the whole event environment\n"
+			       "  --kernel print kernel uevents\n"
+			       "  --udev   print udev events\n"
+			       "  --help   print this help text\n\n");
+		default:
+			goto out;
+		}
+	}
+
+	if (!kernel && !udev) {
+		kernel = 1;
+		udev =1;
+	}
+
+	if (getuid() != 0 && kernel) {
+		fprintf(stderr, "root privileges needed to subscribe to kernel events\n");
+		goto out;
+	}
+
+	/* set signal handlers */
+	memset(&act, 0x00, sizeof(struct sigaction));
+	act.sa_handler = (void (*)(int)) sig_handler;
+	sigemptyset(&act.sa_mask);
+	act.sa_flags = SA_RESTART;
+	sigaction(SIGINT, &act, NULL);
+	sigaction(SIGTERM, &act, NULL);
+
+	printf("udevmonitor will print the received events for:\n");
+	if (udev) {
+		retval = init_udev_monitor_socket();
+		if (retval)
+			goto out;
+		printf("UDEV the event which udev sends out after rule processing\n");
+	}
+	if (kernel) {
+		retval = init_uevent_netlink_sock();
+		if (retval)
+			goto out;
+		printf("UEVENT the kernel uevent\n");
+	}
+	printf("\n");
+
+	while (!udev_exit) {
+		char buf[UEVENT_BUFFER_SIZE*2];
+		ssize_t buflen;
+		ssize_t bufpos;
+		ssize_t keys;
+		int fdcount;
+		struct timeval tv;
+		struct timezone tz;
+		char timestr[64];
+		const char *source = NULL;
+		const char *devpath, *action, *subsys;
+
+		buflen = 0;
+		FD_ZERO(&readfds);
+		if (uevent_netlink_sock >= 0)
+			FD_SET(uevent_netlink_sock, &readfds);
+		if (udev_monitor_sock >= 0)
+			FD_SET(udev_monitor_sock, &readfds);
+
+		fdcount = select(UDEV_MAX(uevent_netlink_sock, udev_monitor_sock)+1, &readfds, NULL, NULL, NULL);
+		if (fdcount < 0) {
+			if (errno != EINTR)
+				fprintf(stderr, "error receiving uevent message: %s\n", strerror(errno));
+			continue;
+		}
+
+		if (gettimeofday(&tv, &tz) == 0) {
+			snprintf(timestr, sizeof(timestr), "%llu.%06u",
+				 (unsigned long long) tv.tv_sec, (unsigned int) tv.tv_usec);
+		} else
+			timestr[0] = '\0';
+
+		if ((uevent_netlink_sock >= 0) && FD_ISSET(uevent_netlink_sock, &readfds)) {
+			buflen = recv(uevent_netlink_sock, &buf, sizeof(buf), 0);
+			if (buflen <= 0) {
+				fprintf(stderr, "error receiving uevent message: %s\n", strerror(errno));
+				continue;
+			}
+			source = "UEVENT";
+		}
+
+		if ((udev_monitor_sock >= 0) && FD_ISSET(udev_monitor_sock, &readfds)) {
+			buflen = recv(udev_monitor_sock, &buf, sizeof(buf), 0);
+			if (buflen <= 0) {
+				fprintf(stderr, "error receiving udev message: %s\n", strerror(errno));
+				continue;
+			}
+			source = "UDEV  ";
+		}
+
+		if (buflen == 0)
+			continue;
+
+		keys = strlen(buf) + 1; /* start of payload */
+		devpath = search_key("DEVPATH", &buf[keys], buflen);
+		action = search_key("ACTION", &buf[keys], buflen);
+		subsys = search_key("SUBSYSTEM", &buf[keys], buflen);
+		printf("%s[%s] %-8s %s (%s)\n", source, timestr, action, devpath, subsys);
+
+		/* print environment */
+		bufpos = keys;
+		if (env) {
+			while (bufpos < buflen) {
+				int keylen;
+				char *key;
+
+				key = &buf[bufpos];
+				keylen = strlen(key);
+				if (keylen == 0)
+					break;
+				printf("%s\n", key);
+				bufpos += keylen + 1;
+			}
+			printf("\n");
+		}
+	}
+
+out:
+	if (uevent_netlink_sock >= 0)
+		close(uevent_netlink_sock);
+	if (udev_monitor_sock >= 0)
+		close(udev_monitor_sock);
+
+	if (retval)
+		return 1;
+	return 0;
+}