mirror of
https://github.com/gcc-mirror/gcc.git
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choose-temp.c: Split off make_temp_file...
* choose-temp.c: Split off make_temp_file, and the code
duplicated between it and choose_temp_base, into...
* make-temp-file.c: ... here; new file.
* Makefile.in (CFILES): Add make-temp-file.c.
(REQUIRED_OFILES): Add make-temp-file.o.
From-SVN: r40683
This commit is contained in:
Zack Weinberg
Zack Weinberg
parent
fed4dede7e
commit
33437dc76d
@ -1,3 +1,12 @@
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2001-03-20 Zack Weinberg <zackw@stanford.edu>
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* choose-temp.c: Split off make_temp_file, and the code
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duplicated between it and choose_temp_base, into...
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* make-temp-file.c: ... here; new file.
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* Makefile.in (CFILES): Add make-temp-file.c.
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(REQUIRED_OFILES): Add make-temp-file.o.
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2001-03-20 Jason Merrill <jason@redhat.com>
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* cplus-dem.c (main): Skip initial $.
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@ -125,7 +125,7 @@ CFILES = asprintf.c alloca.c argv.c atexit.c basename.c bcmp.c bcopy.c \
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cp-demangle.c dyn-string.c fdmatch.c fnmatch.c getcwd.c \
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getpwd.c getopt.c getopt1.c getpagesize.c getruntime.c \
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floatformat.c hashtab.c hex.c index.c insque.c lbasename.c \
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md5.c memchr.c \
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md5.c make-temp-file.c memchr.c \
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memcmp.c memcpy.c memmove.c memset.c mkstemps.c objalloc.c obstack.c \
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partition.c pexecute.c putenv.c random.c rename.c rindex.c setenv.c \
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sigsetmask.c safe-ctype.c sort.c spaces.c splay-tree.c strcasecmp.c \
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@ -138,7 +138,7 @@ CFILES = asprintf.c alloca.c argv.c atexit.c basename.c bcmp.c bcopy.c \
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REQUIRED_OFILES = argv.o alloca.o choose-temp.o concat.o cplus-dem.o \
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cp-demangle.o dyn-string.o fdmatch.o fnmatch.o getopt.o getopt1.o \
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getpwd.o getruntime.o hashtab.o hex.o floatformat.o lbasename.o \
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md5.o objalloc.o \
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md5.o make-temp-file.o objalloc.o \
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obstack.o partition.o pexecute.o safe-ctype.o sort.o spaces.o \
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splay-tree.o strerror.o strsignal.o xatexit.o xexit.o xmalloc.o \
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xmemdup.o xstrdup.o xstrerror.o
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@ -17,81 +17,25 @@ License along with libiberty; see the file COPYING.LIB. If not,
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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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_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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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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#endif
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#ifndef R_OK
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#define R_OK 4
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#define W_OK 2
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#define X_OK 1
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#endif
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#include "libiberty.h"
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extern int mkstemps ();
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#ifndef IN_GCC
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#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN__) && ! defined (_UWIN))
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#define DIR_SEPARATOR '\\'
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#endif
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#endif
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#ifndef DIR_SEPARATOR
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#define DIR_SEPARATOR '/'
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#endif
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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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behaviour. */
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#ifdef __MSDOS__
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#ifndef P_tmpdir
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#define P_tmpdir "."
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#endif
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#endif
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extern char *choose_tmpdir PARAMS ((void));
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/* Name of temporary file.
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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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static const char *try PARAMS ((const char *, const char *));
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static const char *
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try (dir, base)
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const char *dir, *base;
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{
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if (base != 0)
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return base;
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if (dir != 0
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&& access (dir, R_OK | W_OK | X_OK) == 0)
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return dir;
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return 0;
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}
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#define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1)
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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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@ -104,37 +48,13 @@ try (dir, base)
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char *
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choose_temp_base ()
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{
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const char *base = 0;
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const char *base = choose_tmpdir ();
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char *temp_filename;
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int 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 };
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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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#ifdef P_tmpdir
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base = try (P_tmpdir, base);
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#endif
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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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if (base == 0)
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base = ".";
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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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strcpy (temp_filename, base);
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if (len != 0
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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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strcpy (temp_filename + len, TEMP_FILE);
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mktemp (temp_filename);
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@ -142,64 +62,3 @@ choose_temp_base ()
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abort ();
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return temp_filename;
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}
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/* Return a temporary file name (as a string) or NULL if unable to create
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one. */
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char *
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make_temp_file (suffix)
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const char *suffix;
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{
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const char *base = 0;
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char *temp_filename;
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int base_len, suffix_len;
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int fd;
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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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#ifdef P_tmpdir
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base = try (P_tmpdir, base);
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#endif
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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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if (base == 0)
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base = ".";
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base_len = strlen (base);
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if (suffix)
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suffix_len = strlen (suffix);
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else
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suffix_len = 0;
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temp_filename = xmalloc (base_len + 1 /*DIR_SEPARATOR*/
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+ strlen (TEMP_FILE)
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+ suffix_len + 1);
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strcpy (temp_filename, base);
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if (base_len != 0
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&& temp_filename[base_len-1] != '/'
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&& 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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if (suffix)
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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? */
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if (fd == -1)
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abort ();
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/* Similarly if we can not close the file. */
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if (close (fd))
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abort ();
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return temp_filename;
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}
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174
libiberty/make-temp-file.c
Normal file
174
libiberty/make-temp-file.c
Normal file
@ -0,0 +1,174 @@
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/* Utility to pick a temporary filename prefix.
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Copyright (C) 1996, 1997, 1998, 2001 Free Software Foundation, Inc.
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This file is part of the libiberty library.
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Libiberty is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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Libiberty is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with libiberty; see the file COPYING.LIB. If not,
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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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_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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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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#endif
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#ifndef R_OK
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#define R_OK 4
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#define W_OK 2
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#define X_OK 1
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#endif
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#include "libiberty.h"
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extern int mkstemps PARAMS ((char *, int));
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#ifndef IN_GCC
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#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN__) && ! defined (_UWIN))
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#define DIR_SEPARATOR '\\'
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#endif
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#endif
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#ifndef DIR_SEPARATOR
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#define DIR_SEPARATOR '/'
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#endif
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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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behaviour. */
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#ifdef __MSDOS__
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#ifndef P_tmpdir
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#define P_tmpdir "."
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#endif
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#endif
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/* Name of temporary file.
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mktemp requires 6 trailing X's. */
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#define TEMP_FILE "ccXXXXXX"
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#define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1)
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/* Subroutine of choose_tmpdir.
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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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static const char *try PARAMS ((const char *, const char *));
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static const char *
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try (dir, base)
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const char *dir, *base;
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{
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if (base != 0)
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return base;
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if (dir != 0
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&& access (dir, R_OK | W_OK | X_OK) == 0)
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return dir;
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return 0;
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}
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static char tmp[] = { DIR_SEPARATOR, 't', 'm', 'p', 0 };
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static char usrtmp[] =
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{ DIR_SEPARATOR, 'u', 's', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 };
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static char *memoized_tmpdir;
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char *
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choose_tmpdir ()
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{
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const char *base = 0;
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char *tmpdir;
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unsigned int len;
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if (memoized_tmpdir)
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return memoized_tmpdir;
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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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#ifdef P_tmpdir
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base = try (P_tmpdir, base);
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#endif
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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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if (base == 0)
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base = ".";
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/* Append DIR_SEPARATOR to the directory we've chosen
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and return it. */
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len = strlen (base);
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tmpdir = xmalloc (len + 2);
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strcpy (tmpdir, base);
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tmpdir[len] = DIR_SEPARATOR;
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tmpdir[len+1] = '\0';
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memoized_tmpdir = tmpdir;
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return tmpdir;
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}
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/* Return a temporary file name (as a string) or NULL if unable to create
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one. SUFFIX is a suffix to append to the file name. The string is
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malloced, and the temporary file has been created. */
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char *
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make_temp_file (suffix)
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const char *suffix;
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{
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const char *base = choose_tmpdir ();
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char *temp_filename;
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int base_len, suffix_len;
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int fd;
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if (suffix == 0)
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suffix = "";
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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
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+ TEMP_FILE_LEN
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+ suffix_len + 1);
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strcpy (temp_filename, base);
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strcpy (temp_filename + base_len, TEMP_FILE);
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strcpy (temp_filename + base_len + TEMP_FILE_LEN, 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? */
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if (fd == -1)
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abort ();
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/* Similarly if we can not close the file. */
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if (close (fd))
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abort ();
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return temp_filename;
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}
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