Return to tmp.c CVS log

Up to [local] / src / usr.bin / sort

Annotation of src/usr.bin/sort/tmp.c, Revision 1.2

1.2     ! millert     1: /*     $OpenBSD: tmp.c,v 1.1 1997/01/20 19:39:57 millert Exp $ */
1.1       millert     2:
                      3: /*-
                      4:  * Copyright (c) 1993
                      5:  *     The Regents of the University of California.  All rights reserved.
                      6:  *
                      7:  * This code is derived from software contributed to Berkeley by
                      8:  * Peter McIlroy.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
                     18:  * 3. All advertising materials mentioning features or use of this software
                     19:  *    must display the following acknowledgement:
                     20:  *     This product includes software developed by the University of
                     21:  *     California, Berkeley and its contributors.
                     22:  * 4. Neither the name of the University nor the names of its contributors
                     23:  *    may be used to endorse or promote products derived from this software
                     24:  *    without specific prior written permission.
                     25:  *
                     26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     36:  * SUCH DAMAGE.
                     37:  */
                     38:
                     39: #ifndef lint
                     40: #if 0
                     41: static char sccsid[] = "@(#)tmp.c      8.1 (Berkeley) 6/6/93";
                     42: #else
1.2     ! millert    43: static char rcsid[] = "$OpenBSD: tmp.c,v 1.1 1997/01/20 19:39:57 millert Exp $";
1.1       millert    44: #endif
                     45: #endif /* not lint */
                     46:
                     47: #include <sys/param.h>
                     48:
                     49: #include <err.h>
                     50: #include <errno.h>
                     51: #include <limits.h>
                     52: #include <signal.h>
                     53: #include <stdio.h>
                     54: #include <stdlib.h>
                     55: #include <string.h>
                     56: #include <unistd.h>
                     57:
                     58: #include "sort.h"
                     59: #include "pathnames.h"
                     60:
1.2     ! millert    61: #define _NAME_TMP "sort.XXXXXXXXXX"
1.1       millert    62:
                     63: FILE *
                     64: ftmp()
                     65: {
                     66:        sigset_t set, oset;
                     67:        FILE *fp;
                     68:        int fd;
                     69:        char pathb[_POSIX_PATH_MAX], *path;
                     70:
                     71:        path = pathb;
                     72:        (void)snprintf(path, sizeof(pathb), "%s%s%s", tmpdir,
                     73:                       (tmpdir[strlen(tmpdir)-1] != '/') ? "/" : "", _NAME_TMP);
                     74:
                     75:        sigfillset(&set);
                     76:        (void)sigprocmask(SIG_BLOCK, &set, &oset);
                     77:        if ((fd = mkstemp(path)) < 0)
                     78:                err(2, path);
                     79:        if (!(fp = fdopen(fd, "w+")))
                     80:                err(2, path);
                     81:        (void)unlink(path);
                     82:
                     83:        (void)sigprocmask(SIG_SETMASK, &oset, NULL);
                     84:        return (fp);
                     85: }