bsd-user/include/special-errno.h

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2 /*
   3  * QEMU internal errno values for implementing user-only POSIX.
   4  *
   5  *  Copyright (c) 2021 Linaro, Ltd.
   6  */
   7
   8 #ifndef SPECIAL_ERRNO_H
   9 #define SPECIAL_ERRNO_H
  10
  11 /*
  12  * All of these are QEMU internal, not visible to the guest.
  13  * They should be chosen so as to not overlap with any host
  14  * or guest errno.
  15  */
  16
  17 /*
  18  * This is returned when a system call should be restarted, to tell the
  19  * main loop that it should wind the guest PC backwards so it will
  20  * re-execute the syscall after handling any pending signals.
  21  */
  22 #define QEMU_ERESTARTSYS  255
  23
  24 #endif /* SPECIAL_ERRNO_H */