Standard Libraries for EDK II.

[mirror_edk2.git] / StdLib / LibC / Stdio / tempnam.c

/*  $NetBSD: tempnam.c,v 1.19 2005/07/27 13:23:07 drochner Exp $  */\r
\r
/*\r
 * Copyright (c) 1988, 1993\r
 *  The Regents of the University of California.  All rights reserved.\r
 *\r
 * Redistribution and use in source and binary forms, with or without\r
 * modification, are permitted provided that the following conditions\r
 * are met:\r
 * 1. Redistributions of source code must retain the above copyright\r
 *    notice, this list of conditions and the following disclaimer.\r
 * 2. Redistributions in binary form must reproduce the above copyright\r
 *    notice, this list of conditions and the following disclaimer in the\r
 *    documentation and/or other materials provided with the distribution.\r
 * 3. Neither the name of the University nor the names of its contributors\r
 *    may be used to endorse or promote products derived from this software\r
 *    without specific prior written permission.\r
 *\r
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
 * SUCH DAMAGE.\r
 */\r
#include  <LibConfig.h>\r
#include  <sys/EfiCdefs.h>\r
#if defined(LIBC_SCCS) && !defined(lint)\r
#if 0\r
static char sccsid[] = "@(#)tempnam.c 8.1 (Berkeley) 6/4/93";\r
#else\r
__RCSID("$NetBSD: tempnam.c,v 1.19 2005/07/27 13:23:07 drochner Exp $");\r
#endif\r
#endif /* LIBC_SCCS and not lint */\r
\r
#include  "namespace.h"\r
#include  <sys/param.h>\r
#include  <errno.h>\r
#include  <stdio.h>\r
#include  <stdlib.h>\r
#include  <string.h>\r
#include  <sys/EfiSysCall.h>\r
#include  <paths.h>\r
#include  "reentrant.h"\r
#include  "local.h"\r
\r
__warn_references(tempnam,\r
    "warning: tempnam() possibly used unsafely, use mkstemp() or mkdtemp()")\r
\r
static const char *\r
trailsl(const char *f)\r
{\r
  const char *s = f;\r
  while (*s)\r
    s++;\r
  return (f != s && s[-1] == '/') ? "" : "/";\r
}\r
\r
static char *\r
gentemp(char *name, size_t len, const char *tmp, const char  *pfx)\r
{\r
  (void)snprintf(name, len, "%s%s%sXXXX", tmp, trailsl(tmp), pfx);\r
  return _mktemp(name);\r
}\r
\r
char *\r
tempnam(const char *dir, const char *pfx)\r
{\r
  int sverrno;\r
  char *name, *f;\r
  const char *tmp;\r
\r
  if (!(name = malloc((size_t)MAXPATHLEN)))\r
    return NULL;\r
\r
  if (!pfx)\r
    pfx = "tmp.";\r
\r
  if ((tmp = getenv("TMPDIR")) != NULL &&\r
      (f = gentemp(name, (size_t)MAXPATHLEN, tmp, pfx)) != NULL)\r
    return f;\r
\r
  if (dir != NULL &&\r
      (f = gentemp(name, (size_t)MAXPATHLEN, dir, pfx)) != NULL)\r
    return f;\r
\r
  //if ((f = gentemp(name, (size_t)MAXPATHLEN, P_tmpdir, pfx)) != NULL)\r
  //  return f;\r
\r
  if ((f = gentemp(name, (size_t)MAXPATHLEN, _PATH_TMP, pfx)) != NULL)\r
    return f;\r
\r
  sverrno = errno;\r
  free(name);\r
  errno = sverrno;\r
  return(NULL);\r
}\r