thodg/libgit2/src/unix/posix.h

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• Hash : e8ab3db9
  Author :
  Date : 2020-07-07T22:29:05
  

  p_chmod: Android compatibility
  
  Fix #5565
  
  Pre-Android 5 did not implement a virtual filesystem atop FAT partitions for Unix permissions, which causes chmod to fail. However, Unix permissions have no effect on Android anyway as file permissions are not actually managed this way, so treating it as a no-op across all Android is safe.
  

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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_unix_posix_h__
  #define INCLUDE_unix_posix_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_NSEC)
  # 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 snprintf
  #define p_mkstemp(p) mkstemp(p)
  #define p_chdir(p) chdir(p)
  #define p_rmdir(p) rmdir(p)
  #define p_access(p,m) access(p,m)
  #define p_ftruncate(fd, sz) ftruncate(fd, sz)
  
  /*
   * Pre-Android 5 did not implement a virtual filesystem atop FAT
   * partitions for Unix permissions, which causes chmod to fail. However,
   * Unix permissions have no effect on Android anyway as file permissions
   * are not actually managed this way, so treating it as a no-op across
   * all Android is safe.
   */
  #ifdef __ANDROID__
  # define p_chmod(p,m) 0
  #else
  # define p_chmod(p,m) chmod(p, m)
  #endif
  
  /* 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
  
  #endif
  

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