linux-user: Add move_mount() syscall
Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
[lv: define syscall]
Message-Id: <20230424153429.276788-1-thomas@t-8ch.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 954ed14..9a99e45 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8776,6 +8776,12 @@
_syscall2(int, pivot_root, const char *, new_root, const char *, put_old)
#endif
+#if defined(TARGET_NR_move_mount) && defined(__NR_move_mount)
+#define __NR_sys_move_mount __NR_move_mount
+_syscall5(int, sys_move_mount, int, __from_dfd, const char *, __from_pathname,
+ int, __to_dfd, const char *, __to_pathname, unsigned int, flag)
+#endif
+
/* This is an internal helper for do_syscall so that it is easier
* to have a single return point, so that actions, such as logging
* of syscall results, can be performed.
@@ -9169,6 +9175,33 @@
unlock_user(p, arg1, 0);
return ret;
#endif
+#if defined(TARGET_NR_move_mount) && defined(__NR_move_mount)
+ case TARGET_NR_move_mount:
+ {
+ void *p2, *p4;
+
+ if (!arg2 || !arg4) {
+ return -TARGET_EFAULT;
+ }
+
+ p2 = lock_user_string(arg2);
+ if (!p2) {
+ return -TARGET_EFAULT;
+ }
+
+ p4 = lock_user_string(arg4);
+ if (!p4) {
+ unlock_user(p2, arg2, 0);
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(sys_move_mount(arg1, p2, arg3, p4, arg5));
+
+ unlock_user(p2, arg2, 0);
+ unlock_user(p4, arg4, 0);
+
+ return ret;
+ }
+#endif
#ifdef TARGET_NR_stime /* not on alpha */
case TARGET_NR_stime:
{
