thodg/libgit2/src/unix/posix.h

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• Hash : 26f531d3
  Author :
  Date : 2017-09-12T13:35:18
  

  features.h: allow building without CMake-generated feature header
  
  In commit a390a8464 (cmake: move defines into "features.h" header,
  2017-07-01), we have introduced a new "features.h" header. This file is
  being generated by the CMake build system based on how the libgit2 build
  has been configured, replacing the preexisting method of simply setting
  the defines inside of the CMake build system. This was done to help
  splitting up the build instructions into multiple separate
  subdirectories.
  
  An overlooked shortcoming of this approach is that some projects making
  use of libgit2 build the library with custom build systems, without
  making use of CMake. For those users, the introduction of the
  "features.h" file makes their life harder as they would have to also
  generate this file.
  
  Fix this issue by guarding all inclusions of the generated header file
  by the `LIBGIT2_NO_FEATURES_H` define. Like this, other build systems
  can skip the feature header and simply define all used features by
  specifying `-D` flags for the compiler again.
  

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• src/unix/posix.h

• /*
   * 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__unix_h__
  #define INCLUDE_posix__unix_h__
  
  #ifndef LIBGIT2_NO_FEATURES_H
  # include "git2/sys/features.h"
  #endif
  
  #include <stdio.h>
  #include <dirent.h>
  #include <sys/param.h>
  #include <sys/time.h>
  #include <sys/stat.h>
  
  typedef int GIT_SOCKET;
  #define INVALID_SOCKET -1
  
  #define p_lseek(f,n,w) lseek(f, n, w)
  #define p_fstat(f,b) fstat(f, b)
  #define p_lstat(p,b) lstat(p,b)
  #define p_stat(p,b) stat(p, b)
  
  #if defined(GIT_USE_STAT_MTIMESPEC)
  # define st_atime_nsec st_atimespec.tv_nsec
  # define st_mtime_nsec st_mtimespec.tv_nsec
  # define st_ctime_nsec st_ctimespec.tv_nsec
  #elif defined(GIT_USE_STAT_MTIM)
  # define st_atime_nsec st_atim.tv_nsec
  # define st_mtime_nsec st_mtim.tv_nsec
  # define st_ctime_nsec st_ctim.tv_nsec
  #elif !defined(GIT_USE_STAT_MTIME_NSEC) && defined(GIT_USE_NEC)
  # error GIT_USE_NSEC defined but unknown struct stat nanosecond type
  #endif
  
  #define p_utimes(f, t) utimes(f, t)
  
  #define p_readlink(a, b, c) readlink(a, b, c)
  #define p_symlink(o,n) symlink(o, n)
  #define p_link(o,n) link(o, n)
  #define p_unlink(p) unlink(p)
  #define p_mkdir(p,m) mkdir(p, m)
  extern char *p_realpath(const char *, char *);
  
  GIT_INLINE(int) p_fsync(int fd)
  {
  	p_fsync__cnt++;
  	return fsync(fd);
  }
  
  #define p_recv(s,b,l,f) recv(s,b,l,f)
  #define p_send(s,b,l,f) send(s,b,l,f)
  #define p_inet_pton(a, b, c) inet_pton(a, b, c)
  
  #define p_strcasecmp(s1, s2) strcasecmp(s1, s2)
  #define p_strncasecmp(s1, s2, c) strncasecmp(s1, s2, c)
  #define p_vsnprintf(b, c, f, a) vsnprintf(b, c, f, a)
  #define p_snprintf(b, c, ...) snprintf(b, c, __VA_ARGS__)
  #define p_mkstemp(p) mkstemp(p)
  #define p_chdir(p) chdir(p)
  #define p_chmod(p,m) chmod(p, m)
  #define p_rmdir(p) rmdir(p)
  #define p_access(p,m) access(p,m)
  #define p_ftruncate(fd, sz) ftruncate(fd, sz)
  
  /* see win32/posix.h for explanation about why this exists */
  #define p_lstat_posixly(p,b) lstat(p,b)
  
  #define p_localtime_r(c, r) localtime_r(c, r)
  #define p_gmtime_r(c, r) gmtime_r(c, r)
  
  #define p_timeval timeval
  
  #ifdef GIT_USE_FUTIMENS
  GIT_INLINE(int) p_futimes(int f, const struct p_timeval t[2])
  {
  	struct timespec s[2];
  	s[0].tv_sec = t[0].tv_sec;
  	s[0].tv_nsec = t[0].tv_usec * 1000;
  	s[1].tv_sec = t[1].tv_sec;
  	s[1].tv_nsec = t[1].tv_usec * 1000;
  	return futimens(f, s);
  }
  #else
  # define p_futimes futimes
  #endif
  
  #ifdef GIT_USE_REGCOMP_L
  #include <xlocale.h>
  GIT_INLINE(int) p_regcomp(regex_t *preg, const char *pattern, int cflags)
  {
  	return regcomp_l(preg, pattern, cflags, (locale_t) 0);
  }
  #else
  # define p_regcomp regcomp
  #endif
  
  #endif
  

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