linux-user: implement renameat2
This is needed for new architectures like RISC-V which do not provide any
other rename-like syscall.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvm607su9qs.fsf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 104408c..7437894 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -600,6 +600,24 @@
#endif
#endif /* TARGET_NR_utimensat */
+#ifdef TARGET_NR_renameat2
+#if defined(__NR_renameat2)
+#define __NR_sys_renameat2 __NR_renameat2
+_syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd,
+ const char *, new, unsigned int, flags)
+#else
+static int sys_renameat2(int oldfd, const char *old,
+ int newfd, const char *new, int flags)
+{
+ if (flags == 0) {
+ return renameat(oldfd, old, newfd, new);
+ }
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+#endif /* TARGET_NR_renameat2 */
+
#ifdef CONFIG_INOTIFY
#include <sys/inotify.h>
@@ -8426,6 +8444,22 @@
}
break;
#endif
+#if defined(TARGET_NR_renameat2)
+ case TARGET_NR_renameat2:
+ {
+ void *p2;
+ p = lock_user_string(arg2);
+ p2 = lock_user_string(arg4);
+ if (!p || !p2) {
+ ret = -TARGET_EFAULT;
+ } else {
+ ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5));
+ }
+ unlock_user(p2, arg4, 0);
+ unlock_user(p, arg2, 0);
+ }
+ break;
+#endif
#ifdef TARGET_NR_mkdir
case TARGET_NR_mkdir:
if (!(p = lock_user_string(arg1)))
