Added wait syscall

3 files changed, 27 insertions, 0 deletions

diff --git a/src/kernel/syscall/actions/sys_wait.c b/src/kernel/syscall/actions/sys_wait.c
new file mode 100644
index 0000000..7cea24f
--- /dev/null
+++ b/src/kernel/syscall/actions/sys_wait.c
@@ -0,0 +1,24 @@
+#include <tasks/process.h>
+
+u32 sys_wait(u32 pid, u32 *status, u32 options)
+{
+	u32 ret;
+
+	if (pid < 0) { // Wait for any process in gid to die
+		ret = process_wait_gid(pid * -1, status);
+	}
+
+	if (pid == -1) { // Wait for any child to be killed
+		ret = process_wait_gid(current_proc->pid, status);
+	}
+
+	if (pid == 0) { // Wait for siblings of this process to die
+		ret = process_wait_gid(current_proc->gid, status);
+	}
+
+	if (pid > 0) { // Wait for pid to die
+		ret = process_wait_pid(pid, status);
+	}
+
+	return ret;
+}
\ No newline at end of file
diff --git a/src/kernel/syscall/syscall.c b/src/kernel/syscall/syscall.c
index 958428a..f1ee003 100644
--- a/src/kernel/syscall/syscall.c
+++ b/src/kernel/syscall/syscall.c
@@ -15,6 +15,7 @@ u32 (*syscalls[])() = { [SYS_HALT] = (u32(*)())halt_loop, // DEBUG!
 			[SYS_READ] = sys_read,
 			[SYS_WRITE] = sys_write,
 			[SYS_EXEC] = sys_exec,
+			[SYS_WAIT] = sys_wait,
 			[SYS_GET_PID] = sys_get_pid,
 			[SYS_MALLOC] = sys_malloc,
 			[SYS_FREE] = sys_free,
diff --git a/src/kernel/syscall/syscall.h b/src/kernel/syscall/syscall.h
index bc52e74..c5167a4 100644
--- a/src/kernel/syscall/syscall.h
+++ b/src/kernel/syscall/syscall.h
@@ -18,6 +18,8 @@ u32 sys_write(char *path, u32 offset, u32 count, u8 *buf);
 
 u32 sys_exec(char *path);
 
+u32 sys_wait(u32 pid, u32 *status, u32 options);
+
 u32 sys_get_pid();
 
 u32 sys_malloc(u32 count);