Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

sdk/tools/widl/port/mkstemps.c

@@ -0,0 +1,139 @@
+/* Copyright (C) 1991, 1992, 1996, 1998 Free Software Foundation, Inc.
+   This file is derived from mkstemp.c from the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#include <fcntl.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#ifdef HAVE_PROCESS_H
+#include <process.h>
+#endif
+
+/* We need to provide a type for gcc_uint64_t.  */
+#ifdef __GNUC__
+__extension__ typedef unsigned long long gcc_uint64_t;
+#else
+typedef unsigned long gcc_uint64_t;
+#endif
+
+#ifndef TMP_MAX
+#define TMP_MAX 16384
+#endif
+
+/*
+
+@deftypefn Replacement int mkstemps (char *@var{template}, int @var{suffix_len})
+
+Generate a unique temporary file name from @var{template}.
+@var{template} has the form:
+
+@example
+   @var{path}/ccXXXXXX@var{suffix}
+@end example
+
+@var{suffix_len} tells us how long @var{suffix} is (it can be zero
+length).  The last six characters of @var{template} before @var{suffix}
+must be @samp{XXXXXX}; they are replaced with a string that makes the
+filename unique.  Returns a file descriptor open on the file for
+reading and writing.
+
+@end deftypefn
+
+*/
+
+int
+mkstemps (
+     char *template,
+     int suffix_len)
+{
+  static const char letters[]
+    = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+  static gcc_uint64_t value;
+#ifdef HAVE_GETTIMEOFDAY
+  struct timeval tv;
+#endif
+  char *XXXXXX;
+  size_t len;
+  int count;
+
+  len = strlen (template);
+
+  if ((int) len < 6 + suffix_len
+      || strncmp (&template[len - 6 - suffix_len], "XXXXXX", 6))
+    {
+      return -1;
+    }
+
+  XXXXXX = &template[len - 6 - suffix_len];
+
+#ifdef HAVE_GETTIMEOFDAY
+  /* Get some more or less random data.  */
+  gettimeofday (&tv, NULL);
+  value += ((gcc_uint64_t) tv.tv_usec << 16) ^ tv.tv_sec ^ getpid ();
+#else
+  value += getpid ();
+#endif
+
+  for (count = 0; count < TMP_MAX; ++count)
+    {
+      gcc_uint64_t v = value;
+      int fd;
+
+      /* Fill in the random bits.  */
+      XXXXXX[0] = letters[v % 62];
+      v /= 62;
+      XXXXXX[1] = letters[v % 62];
+      v /= 62;
+      XXXXXX[2] = letters[v % 62];
+      v /= 62;
+      XXXXXX[3] = letters[v % 62];
+      v /= 62;
+      XXXXXX[4] = letters[v % 62];
+      v /= 62;
+      XXXXXX[5] = letters[v % 62];
+
+#ifdef VMS
+      fd = open (template, O_RDWR|O_CREAT|O_EXCL, 0600, "fop=tmd");
+#else
+      fd = open (template, O_RDWR|O_CREAT|O_EXCL, 0600);
+#endif
+      if (fd >= 0)
+	/* The file does not exist.  */
+	return fd;
+
+      /* This is a random value.  It is only necessary that the next
+	 TMP_MAX values generated by adding 7777 to VALUE are different
+	 with (module 2^32).  */
+      value += 7777;
+    }
+
+  /* We return the null string if we can't find a unique file name.  */
+  template[0] = '\0';
+  return -1;
+}