Commit 95d0307c authored by Andreas Schwab's avatar Andreas Schwab Committed by Laurent Vivier
Browse files

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: default avatarAndreas Schwab <schwab@suse.de>
Reviewed-by: default avatarLaurent Vivier <laurent@vivier.eu>
Message-Id: <mvm607su9qs.fsf@suse.de>
Signed-off-by: default avatarLaurent Vivier <laurent@vivier.eu>
parent 9c4bbee9

linux-user/syscall.c

+34 −0
Original line number Diff line number Diff line
@@ -600,6 +600,24 @@ static int sys_utimensat(int dirfd, const char *pathname, 
#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 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 
        }

        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)))