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Diffstat (limited to 'udevmonitor.c')
-rw-r--r--udevmonitor.c83
1 files changed, 57 insertions, 26 deletions
diff --git a/udevmonitor.c b/udevmonitor.c
index 89053185e0..d04cb0dcd3 100644
--- a/udevmonitor.c
+++ b/udevmonitor.c
@@ -24,6 +24,7 @@
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
+#include <getopt.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/un.h>
@@ -129,29 +130,55 @@ static const char *search_key(const char *searchkey, const char *buf, size_t buf
int main(int argc, char *argv[])
{
struct sigaction act;
+ int option;
int env = 0;
+ int kernel = 0;
+ int udev = 0;
fd_set readfds;
- int i;
int retval = 0;
- for (i = 1 ; i < argc; i++) {
- char *arg = argv[i];
- if (strcmp(arg, "--env") == 0 || strcmp(arg, "-e") == 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;
- else if (strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0){
- printf("Usage: udevmonitor [--help] [--env]\n"
- " --env print the whole event environment\n"
- " --help print this help text\n\n");
- exit(0);
- } else {
- fprintf(stderr, "unrecognized option '%s'\n", arg);
- exit(1);
+ break;
+ case 'k':
+ kernel = 1;
+ break;
+ case 'u':
+ udev = 1;
+ break;
+ case 'h':
+ printf("Usage: udevmonitor [--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 (getuid() != 0) {
- fprintf(stderr, "root privileges required\n");
- exit(2);
+ 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 */
@@ -162,16 +189,20 @@ int main(int argc, char *argv[])
sigaction(SIGINT, &act, NULL);
sigaction(SIGTERM, &act, NULL);
- retval = init_udev_monitor_socket();
- if (retval)
- goto out;
-
- retval = init_uevent_netlink_sock();
- if (retval)
- goto out;
-
- printf("udevmonitor prints the received event from the kernel [UEVENT]\n"
- "and the event which udev sends out after rule processing [UDEV]\n\n");
+ printf("udevmonitor will print the received events for:\n");
+ if (udev) {
+ retval = init_udev_monitor_socket();
+ if (retval)
+ goto out;
+ printf("UEVENT the kernel uevent\n");
+ }
+ if (kernel) {
+ retval = init_uevent_netlink_sock();
+ if (retval)
+ goto out;
+ printf("UDEV the event which udev sends out after rule processing\n");
+ }
+ printf("\n");
while (!udev_exit) {
char buf[UEVENT_BUFFER_SIZE*2];
@@ -257,6 +288,6 @@ out:
close(udev_monitor_sock);
if (retval)
- return 3;
+ return 1;
return 0;
}