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72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-3.0-or-later
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// Copyright (C) 2011 Andrea Mazzoleni
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#ifndef __UNIX_H
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#define __UNIX_H
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#ifdef __linux__
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#define HAVE_LINUX_DEVICE 1 /**< In Linux enables special device support. */
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#define HAVE_DIRECT_IO 1 /**< Support O_DIRECT in open(). */
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#endif
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#define O_BINARY 0 /**< Not used in Unix. */
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#define O_SEQUENTIAL 0 /**< In Unix posix_fadvise() shall be used. */
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#if HAVE_POSIX_FADVISE
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int posix_fadvise_wrapper(int fd, off_t offset, off_t len, int advice);
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#endif
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/**
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* If nanoseconds are not supported, we report the special STAT_NSEC_INVALID value,
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* to mark that it's undefined.
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*/
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#define STAT_NSEC_INVALID -1
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/* Check if we have nanoseconds support */
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#if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
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#define STAT_NSEC(st) ((int)(st)->st_mtim.tv_nsec) /* Linux */
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#elif HAVE_STRUCT_STAT_ST_MTIMENSEC
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#define STAT_NSEC(st) ((int)(st)->st_mtimensec) /* NetBSD */
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#elif HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
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#define STAT_NSEC(st) ((int)(st)->st_mtimespec.tv_nsec) /* FreeBSD, Mac OS X */
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#else
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#define STAT_NSEC(st) STAT_NSEC_INVALID
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#endif
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/**
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* Open a file with the O_NOATIME flag to avoid to update the access time.
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*/
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int open_noatime(const char* file, int flags);
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/**
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* Check if the specified file is hidden.
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*/
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int dirent_hidden(struct dirent* dd);
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/**
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* Return a description of the file type.
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*/
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const char* stat_desc(struct stat* st);
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/**
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* Return the alignment requirement for direct IO.
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*/
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size_t direct_size(void);
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/****************************************************************************/
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/* thread */
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#if HAVE_PTHREAD_H
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#include <pthread.h>
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#endif
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#if HAVE_PTHREAD_CREATE
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#define HAVE_THREAD 1
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typedef pthread_t thread_id_t;
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typedef pthread_mutex_t thread_mutex_t;
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typedef pthread_cond_t thread_cond_t;
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#endif
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#endif
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