From afc8c05f7f129921d30c6dd8ec3690fc0a5c1e28 Mon Sep 17 00:00:00 2001
From: Peter Rajnoha <prajnoha@redhat.com>
Date: Thu, 6 Aug 2009 15:05:10 +0000
Subject: [PATCH] Add 'udevcookies' command for dmsetup.
---
tools/dmsetup.c | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/tools/dmsetup.c b/tools/dmsetup.c
index 46363b618..7107e6ef0 100644
--- a/tools/dmsetup.c
+++ b/tools/dmsetup.c
@@ -36,6 +36,7 @@
#include <sys/param.h>
#include <locale.h>
#include <langinfo.h>
+#include <time.h>
#include <fcntl.h>
#include <sys/stat.h>
@@ -853,6 +854,45 @@ static int _udevcomplete_all(int argc __attribute((unused)), char **argv __attri
}
#endif
+static int _udevcookies(int argc __attribute((unused)), char **argv __attribute((unused)), void *data __attribute((unused)))
+{
+ int max_id, id, sid;
+ struct seminfo sinfo;
+ struct semid_ds sdata;
+ int val;
+ char *time_str;
+
+ if ((max_id = semctl(0, 0, SEM_INFO, &sinfo)) < 0) {
+ log_sys_error("sem_ctl", "SEM_INFO");
+ return 0;
+ }
+
+ printf("cookie semid value last_semop_time\n");
+
+ for (id = 0; id <= max_id; id++) {
+ if ((sid = semctl(id, 0, SEM_STAT, &sdata)) < 0)
+ continue;
+
+ if (sdata.sem_perm.__key >> 16 == DM_COOKIE_MAGIC) {
+ if ((val = semctl(sid, 0, GETVAL)) < 0) {
+ log_error("semid %d: sem_ctl failed for "
+ "cookie 0x%" PRIx32 ": %s",
+ sid, sdata.sem_perm.__key,
+ strerror(errno));
+ continue;
+ }
+
+ time_str = ctime((const time_t *) &sdata.sem_otime);
+
+ printf("0x%-10x %-10d %-10d %s", sdata.sem_perm.__key,
+ sid, val, time_str ? time_str : "unknown");
+ }
+ }
+
+ return 1;
+}
+
+
static int _version(int argc __attribute((unused)), char **argv __attribute((unused)), void *data __attribute((unused)))
{
char version[80];
@@ -2385,6 +2425,7 @@ static struct command _commands[] = {
{"mknodes", "[<device>]", 0, 1, _mknodes},
{"udevcomplete", "<cookie>", 1, 1, _udevcomplete},
{"udevcomplete_all", "", 0, 0, _udevcomplete_all},
+ {"udevcookies", "", 0, 0, _udevcookies},
{"targets", "", 0, 0, _targets},
{"version", "", 0, 0, _version},
{"setgeometry", "<device> <cyl> <head> <sect> <start>", 5, 5, _setgeometry},