mirror of https://github.com/htop-dev/htop.git
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
#ifndef HEADER_Compat
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#define HEADER_Compat
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/*
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htop - Compat.h
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(C) 2020 htop dev team
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Released under the GNU GPLv2+, see the COPYING file
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in the source distribution for its full text.
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*/
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#include <assert.h> // IWYU pragma: keep
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#include <fcntl.h>
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#include <stddef.h> // IWYU pragma: keep
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#include <unistd.h>
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#include <sys/stat.h> // IWYU pragma: keep
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int Compat_faccessat(int dirfd,
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const char* pathname,
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int mode,
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int flags);
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int Compat_fstatat(int dirfd,
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const char* dirpath,
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const char* pathname,
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struct stat* statbuf,
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int flags);
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#ifdef HAVE_OPENAT
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typedef int openat_arg_t;
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static inline void Compat_openatArgClose(openat_arg_t dirfd) {
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close(dirfd);
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}
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static inline int Compat_openat(openat_arg_t dirfd, const char* pathname, int flags) {
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return openat(dirfd, pathname, flags);
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}
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#else /* HAVE_OPENAT */
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typedef const char* openat_arg_t;
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static inline void Compat_openatArgClose(openat_arg_t dirpath) {
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(void)dirpath;
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}
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int Compat_openat(openat_arg_t dirpath, const char* pathname, int flags);
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#endif /* HAVE_OPENAT */
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ssize_t Compat_readlinkat(int dirfd,
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const char* dirpath,
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const char* pathname,
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char* buf,
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size_t bufsize);
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ssize_t Compat_readlink(openat_arg_t dirfd,
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const char* pathname,
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char* buf,
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size_t bufsize);
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/*
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* static_assert() hack for pre-C11
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* TODO: drop after moving to -std=c11 or newer
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*/
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/* C11 guarantees _Static_assert is a keyword */
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#if (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112L
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# if !defined(_Static_assert)
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# define _Static_assert(expr, msg) \
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extern int (*__Static_assert_function (void)) \
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[!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })]
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# endif
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#endif
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/* C23 guarantees static_assert is a keyword or a macro */
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#if (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 202311L
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# if !defined(static_assert)
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# define static_assert(expr, msg) _Static_assert(expr, msg)
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# endif
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#endif
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#endif /* HEADER_Compat */
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