bsd-user: Implement setloginclass(2) and getloginclass(2) system calls.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-25-kariem.taha2.7@gmail.com>

bsd-user/freebsd/os-proc.h

@@ -130,4 +130,36 @@ static inline abi_long do_freebsd_wait6(void *cpu_env, abi_long idtype,
     return ret;
 }
 
+/* setloginclass(2) */
+static inline abi_long do_freebsd_setloginclass(abi_ulong arg1)
+{
+    abi_long ret;
+    void *p;
+
+    p = lock_user_string(arg1);
+    if (p == NULL) {
+        return -TARGET_EFAULT;
+    }
+    ret = get_errno(setloginclass(p));
+    unlock_user(p, arg1, 0);
+
+    return ret;
+}
+
+/* getloginclass(2) */
+static inline abi_long do_freebsd_getloginclass(abi_ulong arg1, abi_ulong arg2)
+{
+    abi_long ret;
+    void *p;
+
+    p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
+    if (p == NULL) {
+        return -TARGET_EFAULT;
+    }
+    ret = get_errno(getloginclass(p, arg2));
+    unlock_user(p, arg1, arg2);
+
+    return ret;
+}
+
 #endif /* BSD_USER_FREEBSD_OS_PROC_H */

bsd-user/freebsd/os-syscall.c

@@ -375,6 +375,14 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
         ret = do_bsd_ktrace(arg1, arg2, arg3, arg4);
         break;
 
+    case TARGET_FREEBSD_NR_setloginclass: /* setloginclass(2) */
+        ret = do_freebsd_setloginclass(arg1);
+        break;
+
+    case TARGET_FREEBSD_NR_getloginclass: /* getloginclass(2) */
+        ret = do_freebsd_getloginclass(arg1, arg2);
+        break;
+
     case TARGET_FREEBSD_NR_utrace: /* utrace(2) */
         ret = do_bsd_utrace(arg1, arg2);
         break;