posix-timer: Get info in parasite, and structures

Signed-off-by: Pavel Tikhomirov <snorcht@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/parasite.h

@@ -9,6 +9,7 @@
 #ifndef __ASSEMBLY__
 
 #include <sys/un.h>
+#include <time.h>
 
 #include "image.h"
 #include "util-net.h"
@@ -39,6 +40,7 @@ enum {
 
 	PARASITE_CMD_DUMP_SIGACTS,
 	PARASITE_CMD_DUMP_ITIMERS,
+	PARASITE_CMD_DUMP_POSIX_TIMERS,
 	PARASITE_CMD_DUMP_MISC,
 	PARASITE_CMD_DUMP_CREDS,
 	PARASITE_CMD_DUMP_THREAD,
@@ -117,6 +119,22 @@ struct parasite_dump_itimers_args {
 	struct itimerval prof;
 };
 
+struct posix_timer {
+	int it_id;
+	struct itimerspec val;
+	int overrun;
+};
+
+struct parasite_dump_posix_timers_args {
+	int timer_n;
+	struct posix_timer timer[0];
+};
+
+static inline int posix_timers_dump_size(int timer_n)
+{
+	return sizeof(int) + sizeof(struct posix_timer) * timer_n;
+}
+
 /*
  * Misc sfuff, that is too small for separate file, but cannot
  * be read w/o using parasite

pie/parasite.c

@@ -114,6 +114,28 @@ static int dump_itimers(struct parasite_dump_itimers_args *args)
 	return ret;
 }
 
+static int dump_posix_timers(struct parasite_dump_posix_timers_args *args)
+{
+	int i;
+	int ret = 0;
+
+	for(i = 0; i < args->timer_n; i++){
+		ret = sys_timer_gettime(args->timer[i].it_id, &args->timer[i].val);
+		if (ret < 0) {
+			pr_err("sys_timer_gettime failed\n");
+			return ret;
+		}
+		args->timer[i].overrun = sys_timer_getoverrun(args->timer[i].it_id);
+		ret = args->timer[i].overrun;
+		if (ret < 0) {
+			pr_err("sys_timer_getoverrun failed\n");
+			return ret;
+		}
+	}
+
+	return ret;
+}
+
 static int dump_misc(struct parasite_dump_misc *args)
 {
 	args->brk = sys_brk(0);
@@ -510,6 +532,9 @@ static noinline __used int noinline parasite_daemon(void *args)
 		case PARASITE_CMD_DUMP_ITIMERS:
 			ret = dump_itimers(args);
 			break;
+		case PARASITE_CMD_DUMP_POSIX_TIMERS:
+			ret = dump_posix_timers(args);
+			break;
 		case PARASITE_CMD_DUMP_MISC:
 			ret = dump_misc(args);
 			break;