openbsd-compat/bsd-cygwin_util.c

   1 /*
   2  * Copyright (c) 2000, 2001, Corinna Vinschen <vinschen@cygnus.com>
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  *
  24  * Created: Sat Sep 02 12:17:00 2000 cv
  25  *
  26  * This file contains functions for forcing opened file descriptors to
  27  * binary mode on Windows systems.
  28  */
  29
  30 #include "includes.h"
  31
  32 #ifdef HAVE_CYGWIN
  33
  34 #if defined(open) && open == binary_open
  35 # undef open
  36 #endif
  37 #if defined(pipe) && open == binary_pipe
  38 # undef pipe
  39 #endif
  40
  41 #include <sys/types.h>
  42
  43 #include <fcntl.h>
  44 #include <stdlib.h>
  45 #include <unistd.h>
  46 #include <windows.h>
  47
  48 #include "xmalloc.h"
  49
  50 int
  51 binary_open(const char *filename, int flags, ...)
  52 {
  53         va_list ap;
  54         mode_t mode;
  55
  56         va_start(ap, flags);
  57         mode = va_arg(ap, mode_t);
  58         va_end(ap);
  59         return (open(filename, flags | O_BINARY, mode));
  60 }
  61
  62 int
  63 binary_pipe(int fd[2])
  64 {
  65         int ret = pipe(fd);
  66
  67         if (!ret) {
  68                 setmode(fd[0], O_BINARY);
  69                 setmode(fd[1], O_BINARY);
  70         }
  71         return (ret);
  72 }
  73
  74 int
  75 check_ntsec(const char *filename)
  76 {
  77         return (pathconf(filename, _PC_POSIX_PERMISSIONS));
  78 }
  79
  80 #define NL(x) x, (sizeof (x) - 1)
  81 #define WENV_SIZ (sizeof (wenv_arr) / sizeof (wenv_arr[0]))
  82
  83 static struct wenv {
  84         const char *name;
  85         size_t namelen;
  86 } wenv_arr[] = {
  87         { NL("ALLUSERSPROFILE=") },
  88         { NL("COMPUTERNAME=") },
  89         { NL("COMSPEC=") },
  90         { NL("CYGWIN=") },
  91         { NL("OS=") },
  92         { NL("PATH=") },
  93         { NL("PATHEXT=") },
  94         { NL("SYSTEMDRIVE=") },
  95         { NL("SYSTEMROOT=") },
  96         { NL("WINDIR=") }
  97 };
  98
  99 char **
 100 fetch_windows_environment(void)
 101 {
 102         char **e, **p;
 103         unsigned int i, idx = 0;
 104
 105         p = xcalloc(WENV_SIZ + 1, sizeof(char *));
 106         for (e = environ; *e != NULL; ++e) {
 107                 for (i = 0; i < WENV_SIZ; ++i) {
 108                         if (!strncmp(*e, wenv_arr[i].name, wenv_arr[i].namelen))
 109                                 p[idx++] = *e;
 110                 }
 111         }
 112         p[idx] = NULL;
 113         return p;
 114 }
 115
 116 void
 117 free_windows_environment(char **p)
 118 {
 119         xfree(p);
 120 }
 121
 122 #endif /* HAVE_CYGWIN */