syscalls: Add set/get itimers syscalls

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>

include/syscall-codes.h

@@ -19,6 +19,8 @@
 #define __NR_dup2		33
 #define __NR_pause		34
 #define __NR_nanosleep		35
+#define __NR_getitimer		36
+#define __NR_setitimer		38
 #define __NR_getpid		39
 #define __NR_clone		56
 #define __NR_exit		60

include/syscall.h

@@ -2,6 +2,7 @@
 #define CR_SYSCALL_H_
 
 #include <sys/types.h>
+#include <sys/time.h>
 
 #include "types.h"
 #include "compiler.h"
@@ -157,6 +158,16 @@ static always_inline long sys_sigaction(int signum, const rt_sigaction_t *act, r
 	return syscall4(__NR_rt_sigaction, signum, (unsigned long)act, (unsigned long)oldact, sizeof(rt_sigset_t));
 }
 
+static always_inline long sys_getitimer(int which, const struct itimerval *val)
+{
+	return syscall2(__NR_getitimer, (unsigned long)which, (unsigned long)val);
+}
+
+static always_inline long sys_setitimer(int which, const struct itimerval *val, struct itimerval *old)
+{
+	return syscall3(__NR_setitimer, (unsigned long)which, (unsigned long)val, (unsigned long)old);
+}
+
 static always_inline long sys_close(int fd)
 {
 	return syscall1(__NR_close, fd);