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Diffstat (limited to 'libiberty/make-temp-file.c')
| -rw-r--r-- | libiberty/make-temp-file.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/libiberty/make-temp-file.c b/libiberty/make-temp-file.c deleted file mode 100644 index 8833504..0000000 --- a/libiberty/make-temp-file.c +++ /dev/null @@ -1,179 +0,0 @@ -/* Utility to pick a temporary filename prefix. - Copyright (C) 1996, 1997, 1998, 2001 Free Software Foundation, Inc. - -This file is part of the libiberty library. -Libiberty is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public -License as published by the Free Software Foundation; either -version 2 of the License, or (at your option) any later version. - -Libiberty 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 -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with libiberty; see the file COPYING.LIB. If not, -write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdio.h> /* May get P_tmpdir. */ -#include <sys/types.h> -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif -#ifdef HAVE_STRING_H -#include <string.h> -#endif -#ifdef HAVE_SYS_FILE_H -#include <sys/file.h> /* May get R_OK, etc. on some systems. */ -#endif - -#ifndef R_OK -#define R_OK 4 -#define W_OK 2 -#define X_OK 1 -#endif - -#include "libiberty.h" -extern int mkstemps PARAMS ((char *, int)); - -/* '/' works just fine on MS-DOS based systems. */ -#ifndef DIR_SEPARATOR -#define DIR_SEPARATOR '/' -#endif - -/* Name of temporary file. - mktemp requires 6 trailing X's. */ -#define TEMP_FILE "ccXXXXXX" -#define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1) - -/* Subroutine of choose_tmpdir. - If BASE is non-NULL, return it. - Otherwise it checks if DIR is a usable directory. - If success, DIR is returned. - Otherwise NULL is returned. */ - -static inline const char *try PARAMS ((const char *, const char *)); - -static inline const char * -try (dir, base) - const char *dir, *base; -{ - if (base != 0) - return base; - if (dir != 0 - && access (dir, R_OK | W_OK | X_OK) == 0) - return dir; - return 0; -} - -static const char tmp[] = { DIR_SEPARATOR, 't', 'm', 'p', 0 }; -static const char usrtmp[] = -{ DIR_SEPARATOR, 'u', 's', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 }; -static const char vartmp[] = -{ DIR_SEPARATOR, 'v', 'a', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 }; - -static char *memoized_tmpdir; - -/* - -@deftypefn Replacement char* choose_tmpdir () - -Returns a pointer to a directory path suitable for creating temporary -files in. - -@end deftypefn - -*/ - -char * -choose_tmpdir () -{ - const char *base = 0; - char *tmpdir; - unsigned int len; - - if (memoized_tmpdir) - return memoized_tmpdir; - - base = try (getenv ("TMPDIR"), base); - base = try (getenv ("TMP"), base); - base = try (getenv ("TEMP"), base); - -#ifdef P_tmpdir - base = try (P_tmpdir, base); -#endif - - /* Try /var/tmp, /usr/tmp, then /tmp. */ - base = try (vartmp, base); - base = try (usrtmp, base); - base = try (tmp, base); - - /* If all else fails, use the current directory! */ - if (base == 0) - base = "."; - - /* Append DIR_SEPARATOR to the directory we've chosen - and return it. */ - len = strlen (base); - tmpdir = xmalloc (len + 2); - strcpy (tmpdir, base); - tmpdir[len] = DIR_SEPARATOR; - tmpdir[len+1] = '\0'; - - memoized_tmpdir = tmpdir; - return tmpdir; -} - -/* - -@deftypefn Replacement char* make_temp_file (const char *@var{suffix}) - -Return a temporary file name (as a string) or @code{NULL} if unable to -create one. @var{suffix} is a suffix to append to the file name. The -string is @code{malloc}ed, and the temporary file has been created. - -@end deftypefn - -*/ - -char * -make_temp_file (suffix) - const char *suffix; -{ - const char *base = choose_tmpdir (); - char *temp_filename; - int base_len, suffix_len; - int fd; - - if (suffix == 0) - suffix = ""; - - base_len = strlen (base); - suffix_len = strlen (suffix); - - temp_filename = xmalloc (base_len - + TEMP_FILE_LEN - + suffix_len + 1); - strcpy (temp_filename, base); - strcpy (temp_filename + base_len, TEMP_FILE); - strcpy (temp_filename + base_len + TEMP_FILE_LEN, suffix); - - fd = mkstemps (temp_filename, suffix_len); - /* If mkstemps failed, then something bad is happening. Maybe we should - issue a message about a possible security attack in progress? */ - if (fd == -1) - abort (); - /* Similarly if we can not close the file. */ - if (close (fd)) - abort (); - return temp_filename; -} |