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d5bf9182dd
POSIX (`errno(3p)`) states that errno should not be set to zero. This helps with applications that don't expect errno to get updated unless an intermediate syscall also fails.
35 lines
753 B
C
35 lines
753 B
C
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <errno_numbers.h>
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#include <sys/cdefs.h>
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#define __RETURN_WITH_ERRNO(rc, good_ret, bad_ret) \
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do { \
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if (rc < 0) { \
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errno = -rc; \
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return (bad_ret); \
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} \
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return (good_ret); \
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} while (0)
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__BEGIN_DECLS
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extern const char* const sys_errlist[];
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extern int sys_nerr;
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#ifdef NO_TLS
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extern int errno;
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#else
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extern __thread int errno;
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#endif
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#define errno errno
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__END_DECLS
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