qemu/linux-user/include/special-errno.h
Paolo Bonzini 05a248715c user: move common-user includes to a subdirectory of {bsd,linux}-user/
Avoid polluting the compilation of common-user/ with local include files;
making an include file available to common-user/ should be a deliberate
decision in order to keep a clear interface that can be used by both
bsd-user/ and linux-user/.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-12 14:08:29 +01:00

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C

/* 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 */