xemu/bsd-user/special-errno.h
Richard Henderson 2ac16d01e3 bsd-user: Create special-errno.h
Pull the internal errno used by qemu internally its own
header file, for use by safe-syscall.S.

Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-12-19 20:47:33 -08:00

25 lines
620 B
C

/* SPDX-License-Identifier: BSD-3-Clause */
/*
* QEMU internal errno values for implementing user-only POSIX.
*
* 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 255
#endif /* SPECIAL_ERRNO_H */