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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This file exports two functions: choose_temp_base and make_temp_file. */
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20
#ifdef HAVE_CONFIG_H
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21
#include "config.h"
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#include <stdio.h> /* May get P_tmpdir. */
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#include <sys/types.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#ifdef HAVE_STRING_H
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#include <string.h>
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#ifdef HAVE_SYS_FILE_H
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#include <sys/file.h> /* May get R_OK, etc. on some systems. */
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#include "libiberty.h"
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extern int mkstemps ();
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#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN__) && ! defined (_UWIN))
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#define DIR_SEPARATOR '\\'
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#define DIR_SEPARATOR '/'
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/* On MSDOS, write temp files in current dir
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because there's no place else we can expect to use. */
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/* ??? Although the current directory is tried as a last resort,
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this is left in so that on MSDOS it is preferred to /tmp on the
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off chance that someone requires this, since that was the previous
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extern char *choose_tmpdir PARAMS ((void));
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/* Name of temporary file.
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36
mktemp requires 6 trailing X's. */
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#define TEMP_FILE "ccXXXXXX"
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/* Subroutine of choose_temp_base.
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If BASE is non-NULL, return it.
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Otherwise it checks if DIR is a usable directory.
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If success, DIR is returned.
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Otherwise NULL is returned. */
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&& access (dir, R_OK | W_OK | X_OK) == 0)
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/* Return a prefix for temporary file names or NULL if unable to find one.
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The current directory is chosen if all else fails so the program is
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exited if a temporary directory can't be found (mktemp fails).
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The buffer for the result is obtained with xmalloc.
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This function is provided for backwards compatability only. It use
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is not recommended. */
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#define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1)
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@deftypefn Extension char* choose_temp_base (void)
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Return a prefix for temporary file names or @code{NULL} if unable to
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find one. The current directory is chosen if all else fails so the
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program is exited if a temporary directory can't be found (@code{mktemp}
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fails). The buffer for the result is obtained with @code{xmalloc}.
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This function is provided for backwards compatability only. Its use is
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choose_temp_base ()
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const char *base = choose_tmpdir ();
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char *temp_filename;
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static char tmp[] = { DIR_SEPARATOR, 't', 'm', 'p', 0 };
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static char usrtmp[] = { DIR_SEPARATOR, 'u', 's', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 };
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base = try (getenv ("TMPDIR"), base);
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base = try (getenv ("TMP"), base);
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base = try (getenv ("TEMP"), base);
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base = try (P_tmpdir, base);
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/* Try /usr/tmp, then /tmp. */
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base = try (usrtmp, base);
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base = try (tmp, base);
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/* If all else fails, use the current directory! */
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len = strlen (base);
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temp_filename = xmalloc (len + 1 /*DIR_SEPARATOR*/
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+ strlen (TEMP_FILE) + 1);
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temp_filename = xmalloc (len + TEMP_FILE_LEN + 1);
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65
strcpy (temp_filename, base);
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&& temp_filename[len-1] != '/'
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&& temp_filename[len-1] != DIR_SEPARATOR)
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temp_filename[len++] = DIR_SEPARATOR;
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66
strcpy (temp_filename + len, TEMP_FILE);
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68
mktemp (temp_filename);
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return temp_filename;
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/* Return a temporary file name (as a string) or NULL if unable to create
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make_temp_file (suffix)
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int base_len, suffix_len;
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static char tmp[] = { DIR_SEPARATOR, 't', 'm', 'p', 0 };
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static char usrtmp[] = { DIR_SEPARATOR, 'u', 's', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 };
157
base = try (getenv ("TMPDIR"), base);
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base = try (getenv ("TMP"), base);
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base = try (getenv ("TEMP"), base);
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base = try (P_tmpdir, base);
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/* Try /usr/tmp, then /tmp. */
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base = try (usrtmp, base);
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base = try (tmp, base);
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/* If all else fails, use the current directory! */
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base_len = strlen (base);
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suffix_len = strlen (suffix);
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temp_filename = xmalloc (base_len + 1 /*DIR_SEPARATOR*/
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strcpy (temp_filename, base);
186
&& temp_filename[base_len-1] != '/'
187
&& temp_filename[base_len-1] != DIR_SEPARATOR)
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temp_filename[base_len++] = DIR_SEPARATOR;
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strcpy (temp_filename + base_len, TEMP_FILE);
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strcat (temp_filename, suffix);
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fd = mkstemps (temp_filename, suffix_len);
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/* If mkstemps failed, then something bad is happening. Maybe we should
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issue a message about a possible security attack in progress? */
199
/* Similarly if we can not close the file. */
202
return temp_filename;
added
removed
libiberty/choose-temp.c
