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1 /* Copyright (C) 1991, 1993 Free Software Foundation, Inc. |
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2 This file is part of the GNU C Library. |
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3 |
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4 The GNU C Library is free software; you can redistribute it and/or |
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5 modify it under the terms of the GNU Library General Public License as |
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6 published by the Free Software Foundation; either version 2 of the |
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7 License, or (at your option) any later version. |
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8 |
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9 The GNU C Library is distributed in the hope that it will be useful, |
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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12 Library General Public License for more details. |
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13 |
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14 You should have received a copy of the GNU Library General Public |
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15 License along with the GNU C Library; see the file COPYING.LIB. If |
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16 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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17 Boston, MA 02111-1307, USA. */ |
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18 |
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19 #ifdef HAVE_CONFIG_H |
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20 #include <config.h> |
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21 #endif |
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22 |
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23 #ifndef HAVE_TEMPNAM |
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24 |
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25 #include <stddef.h> |
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26 #include <stdlib.h> |
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27 #include <stdio.h> |
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28 #include <string.h> |
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29 |
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30 extern char *__stdio_gen_tempname (const char *dir, const char *pfx, |
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31 int dir_search, size_t *lenptr, |
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32 FILE **streamptr); |
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33 |
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34 /* Generate a unique temporary filename using up to five characters of PFX |
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35 if it is not NULL. The directory to put this file in is searched for |
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36 as follows: First the environment variable "TMPDIR" is checked. |
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37 If it contains the name of a writable directory, that directory is used. |
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38 If not and if DIR is not NULL, that value is checked. If that fails, |
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39 P_tmpdir is tried and finally "/tmp". The storage for the filename |
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40 is allocated by `malloc'. */ |
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41 char * |
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42 tempnam (const char *dir, const char *pfx) |
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43 { |
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44 size_t len; |
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45 register char *s; |
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46 register char *t = __stdio_gen_tempname(dir, pfx, 1, &len, (FILE **) NULL); |
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47 |
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48 if (t == NULL) |
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49 return NULL; |
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50 |
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51 s = (char *) malloc(len); |
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52 if (s == NULL) |
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53 return NULL; |
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54 |
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55 (void) memcpy(s, t, len); |
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56 return s; |
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57 } |
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58 |
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59 #endif |
