src/posix.c

   1 /*
   2  * Copyright (C) 2009-2011 the libgit2 contributors
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7 #include "common.h"
   8 #include "posix.h"
   9 #include "path.h"
  10 #include <stdio.h>
  11 #include <ctype.h>
  12
  13 int p_open(const char *path, int flags)
  14 {
  15         return open(path, flags | O_BINARY);
  16 }
  17
  18 int p_creat(const char *path, int mode)
  19 {
  20         return open(path, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, mode);
  21 }
  22
  23 int p_read(git_file fd, void *buf, size_t cnt)
  24 {
  25         char *b = buf;
  26         while (cnt) {
  27                 ssize_t r = read(fd, b, cnt);
  28                 if (r < 0) {
  29                         if (errno == EINTR || errno == EAGAIN)
  30                                 continue;
  31                         return GIT_EOSERR;
  32                 }
  33                 if (!r)
  34                         break;
  35                 cnt -= r;
  36                 b += r;
  37         }
  38         return (int)(b - (char *)buf);
  39 }
  40
  41 int p_write(git_file fd, const void *buf, size_t cnt)
  42 {
  43         const char *b = buf;
  44         while (cnt) {
  45                 ssize_t r = write(fd, b, cnt);
  46                 if (r < 0) {
  47                         if (errno == EINTR || errno == EAGAIN)
  48                                 continue;
  49                         return GIT_EOSERR;
  50                 }
  51                 if (!r) {
  52                         errno = EPIPE;
  53                         return GIT_EOSERR;
  54                 }
  55                 cnt -= r;
  56                 b += r;
  57         }
  58         return GIT_SUCCESS;
  59 }
  60
  61 int p_getcwd(char *buffer_out, size_t size)
  62 {
  63         char *cwd_buffer;
  64
  65         assert(buffer_out && size > 0);
  66
  67 #ifdef GIT_WIN32
  68         cwd_buffer = _getcwd(buffer_out, size);
  69 #else
  70         cwd_buffer = getcwd(buffer_out, size);
  71 #endif
  72
  73         if (cwd_buffer == NULL)
  74                 return git__throw(GIT_EOSERR, "Failed to retrieve current working directory");
  75
  76         git_path_mkposix(buffer_out);
  77
  78         git_path_join(buffer_out, buffer_out, "");      //Ensure the path ends with a trailing slash
  79         return GIT_SUCCESS;
  80 }