From 05a248715cef192336a594afed812871a52efc1f Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Tue, 21 Dec 2021 16:20:32 +0100 Subject: 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 Signed-off-by: Paolo Bonzini --- linux-user/include/special-errno.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 linux-user/include/special-errno.h (limited to 'linux-user/include/special-errno.h') diff --git a/linux-user/include/special-errno.h b/linux-user/include/special-errno.h new file mode 100644 index 0000000000..4120455baa --- /dev/null +++ b/linux-user/include/special-errno.h @@ -0,0 +1,32 @@ +/* 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 */ -- cgit v1.2.3