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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* QEMU internal errno values for implementing user-only POSIX.
*
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2021 Linaro, Ltd.
*/
#ifndef SPECIAL_ERRNO_H
#define SPECIAL_ERRNO_H
/*
* All of these are QEMU internal, not visible to the guest.
* They should be chosen so as to not overlap with any host
* or guest errno.
*/
/*
* This is returned when a system call should be restarted, to tell the
* main loop that it should wind the guest PC backwards so it will
* re-execute the syscall after handling any pending signals.
*/
#define QEMU_ERESTARTSYS 512
/*
* This is returned after a successful sigreturn syscall, to indicate
* that it has correctly set the guest registers and so the main loop
* should not touch them.
*/
#define QEMU_ESIGRETURN 513
#endif /* SPECIAL_ERRNO_H */
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