/*

 * Copyright (C) the libgit2 contributors. All rights reserved.

 *

 * This file is part of libgit2, distributed under the GNU GPL v2 with

 * a Linking Exception. For full terms see the included COPYING file.

 */

#ifndef INCLUDE_posix_h__

#define INCLUDE_posix_h__

#include "common.h"

#include <fcntl.h>

#include <time.h>

#include "fnmatch.h"

/* stat: file mode type testing macros */

#ifndef S_IFGITLINK

#define S_IFGITLINK 0160000

#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)

#endif

#ifndef S_IFLNK

#define S_IFLNK 0120000

#undef _S_IFLNK

#define _S_IFLNK S_IFLNK

#endif

#ifndef S_IWUSR

#define S_IWUSR 00200

#endif

#ifndef S_IXUSR

#define S_IXUSR 00100

#endif

#ifndef S_ISLNK

#define S_ISLNK(m) (((m) & _S_IFMT) == _S_IFLNK)

#endif

#ifndef S_ISDIR

#define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)

#endif

#ifndef S_ISREG

#define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)

#endif

#ifndef S_ISFIFO

#define S_ISFIFO(m) (((m) & _S_IFMT) == _S_IFIFO)

#endif

/* if S_ISGID is not defined, then don't try to set it */

#ifndef S_ISGID

#define S_ISGID 0

#endif

#ifndef O_BINARY

#define O_BINARY 0

#endif

#ifndef O_CLOEXEC

#define O_CLOEXEC 0

#endif

#ifndef SOCK_CLOEXEC

#define SOCK_CLOEXEC 0

#endif

/* access() mode parameter #defines	*/

#ifndef F_OK

#define F_OK 0 /* existence check */

#endif

#ifndef W_OK

#define W_OK 2 /* write mode check */

#endif

#ifndef R_OK

#define R_OK 4 /* read mode check */

#endif

/* Determine whether an errno value indicates that a read or write failed

 * because the descriptor is blocked.

 */

#if defined(EWOULDBLOCK)

#define GIT_ISBLOCKED(e) ((e) == EAGAIN || (e) == EWOULDBLOCK)

#else

#define GIT_ISBLOCKED(e) ((e) == EAGAIN)

#endif

/* define some standard errnos that the runtime may be missing.  for example,

 * mingw lacks EAFNOSUPPORT. */

#ifndef EAFNOSUPPORT

#define EAFNOSUPPORT (INT_MAX-1)

#endif

typedef int git_file;

/**

 * Standard POSIX Methods

 *

 * All the methods starting with the `p_` prefix are

 * direct ports of the standard POSIX methods.

 *

 * Some of the methods are slightly wrapped to provide

 * saner defaults. Some of these methods are emulated

 * in Windows platforms.

 *

 * Use your manpages to check the docs on these.

 */

extern ssize_t p_read(git_file fd, void *buf, size_t cnt);

extern int p_write(git_file fd, const void *buf, size_t cnt);

#define p_close(fd) close(fd)

#define p_umask(m) umask(m)

extern int p_open(const char *path, int flags, ...);

extern int p_creat(const char *path, mode_t mode);

extern int p_getcwd(char *buffer_out, size_t size);

extern int p_rename(const char *from, const char *to);

extern int git__page_size(size_t *page_size);

extern int git__mmap_alignment(size_t *page_size);

/* The number of times `p_fsync` has been called.  Note that this is for

 * test code only; it it not necessarily thread-safe and should not be

 * relied upon in production.

 */

extern size_t p_fsync__cnt;

/**

 * Platform-dependent methods

 */

#ifdef GIT_WIN32

#	include "win32/posix.h"

#else

#	include "unix/posix.h"

#endif

#include "strnlen.h"

#ifdef NO_READDIR_R

GIT_INLINE(int) p_readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)

{

	GIT_UNUSED(entry);

	*result = readdir(dirp);

	return 0;

}

#else /* NO_READDIR_R */

#	define p_readdir_r(d,e,r) readdir_r(d,e,r)

#endif

#ifdef NO_ADDRINFO

#	include <netdb.h>

struct addrinfo {

	struct hostent *ai_hostent;

	struct servent *ai_servent;

	struct sockaddr_in ai_addr_in;

	struct sockaddr *ai_addr;

	size_t ai_addrlen;

	int ai_family;

	int ai_socktype;

	int ai_protocol;

	long ai_port;

	struct addrinfo *ai_next;

};

extern int p_getaddrinfo(const char *host, const char *port,

	struct addrinfo *hints, struct addrinfo **info);

extern void p_freeaddrinfo(struct addrinfo *info);

extern const char *p_gai_strerror(int ret);

#else

#	define p_getaddrinfo(a, b, c, d) getaddrinfo(a, b, c, d)

#	define p_freeaddrinfo(a) freeaddrinfo(a)

#	define p_gai_strerror(c) gai_strerror(c)

#endif /* NO_ADDRINFO */

#endif