syscalls: add _syscall_sleep()

1 files changed, 8 insertions, 0 deletions

diff --git a/src/kernel/syscalls.c b/src/kernel/syscalls.c
index 4537ff5..ceba528 100644
--- a/src/kernel/syscalls.c
+++ b/src/kernel/syscalls.c
@@ -363,6 +363,11 @@ long _syscall_pipe(handle_t __user user_ends[2], int flags) {
 	SYSCALL_RETURN(0);
 }
 
+void _syscall_sleep(long ms) {
+	// TODO no overflow check - can leak current uptime
+	timer_schedule(process_current, uptime_ms() + ms);
+}
+
 long _syscall_execbuf(void __user *ubuf, size_t len) {
 	if (len == 0) SYSCALL_RETURN(0);
 	if (len > sizeof(uint64_t) * 6 * 4) // TODO specify max size somewhere
@@ -434,6 +439,9 @@ long _syscall(long num, long a, long b, long c, long d, long e) {
 		case _SYSCALL_PIPE:
 			_syscall_pipe((userptr_t)a, b);
 			break;
+		case _SYSCALL_SLEEP:
+			_syscall_sleep(a);
+			break;
 		case _SYSCALL_EXECBUF:
 			_syscall_execbuf((userptr_t)a, b);
 			break;