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/*
* 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 "git2_util.h"
#include <stdlib.h>
#include <fcntl.h>
#include <time.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
/* Compiler independent macro to handle signal interrpted system calls */
#define HANDLE_EINTR(result, x) do { \
result = (x); \
} while (result == -1 && errno == EINTR);
/* Provide a 64-bit size for offsets. */
#if defined(_MSC_VER)
typedef __int64 off64_t;
#elif defined(__HAIKU__)
typedef __haiku_std_int64 off64_t;
#elif defined(__APPLE__)
typedef __int64_t off64_t;
#elif defined(_AIX)
typedef long long off64_t;
#else
typedef int64_t off64_t;
#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);
extern ssize_t p_pread(int fd, void *data, size_t size, off64_t offset);
extern ssize_t p_pwrite(int fd, const void *data, size_t size, off64_t offset);
#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 */
#ifdef GIT_IO_POLL
# include <poll.h>
# define p_poll poll
#elif GIT_IO_WSAPOLL
# include <winsock2.h>
# define p_poll WSAPoll
#else
# define POLLIN 0x01
# define POLLPRI 0x02
# define POLLOUT 0x04
# define POLLERR 0x08
# define POLLHUP 0x10
struct pollfd {
int fd;
short events;
short revents;
};
extern int p_poll(struct pollfd *fds, unsigned int nfds, int timeout);
#endif
#endif
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