Kernel: Add SYS_GET_{,E}{UID,GID}

libc/include/sys/syscall.h

@@ -32,6 +32,10 @@ __BEGIN_DECLS
 #define SYS_SET_EGID 25
 #define SYS_SET_REUID 26
 #define SYS_SET_REGID 27
+#define SYS_GET_UID 28
+#define SYS_GET_GID 29
+#define SYS_GET_EUID 30
+#define SYS_GET_EGID 31
 
 __END_DECLS
 

libc/unistd.cpp

@@ -213,6 +213,26 @@ long syscall(long syscall, ...)
 			ret = Kernel::syscall(SYS_SET_REGID, rgid, egid);
 			break;
 		}
+		case SYS_GET_UID:
+		{
+			ret = Kernel::syscall(SYS_GET_UID);
+			break;
+		}
+		case SYS_GET_GID:
+		{
+			ret = Kernel::syscall(SYS_GET_GID);
+			break;
+		}
+		case SYS_GET_EUID:
+		{
+			ret = Kernel::syscall(SYS_GET_EUID);
+			break;
+		}
+		case SYS_GET_EGID:
+		{
+			ret = Kernel::syscall(SYS_GET_EGID);
+			break;
+		}
 		default:
 			puts("LibC: Unhandeled syscall");
 			ret = -ENOSYS;
@@ -322,6 +342,26 @@ unsigned int sleep(unsigned int seconds)
 	return syscall(SYS_SLEEP, seconds);
 }
 
+uid_t getuid(void)
+{
+	return syscall(SYS_GET_UID);
+}
+
+gid_t getgid(void)
+{
+	return syscall(SYS_GET_GID);
+}
+
+uid_t geteuid(void)
+{
+	return syscall(SYS_GET_EUID);
+}
+
+gid_t getegid(void)
+{
+	return syscall(SYS_GET_EGID);
+}
+
 int seteuid(uid_t uid)
 {
 	return syscall(SYS_SET_EUID, uid);