usr.bin/ranlib/misc.c

   1 /*-
   2  * Copyright (c) 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Hugh Smith at The University of Guelph.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * @(#)misc.c   8.1 (Berkeley) 6/6/93
  37  * $FreeBSD: src/usr.bin/ranlib/misc.c,v 1.5 1999/08/28 01:05:02 peter Exp $
  38  * $DragonFly: src/usr.bin/ranlib/misc.c,v 1.5 2004/08/30 20:06:50 eirikn Exp $
  39  */
  40
  41 #include <sys/param.h>
  42 #include <sys/signal.h>
  43 #include <err.h>
  44 #include <errno.h>
  45 #include <signal.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <string.h>
  49 #include <unistd.h>
  50 #include "pathnames.h"
  51
  52 extern char *archive;                   /* archive name */
  53 char *tname = "temporary file";         /* temporary file "name" */
  54
  55 void error( char * );
  56
  57 int
  58 tmp(void)
  59 {
  60         sigset_t set, oset;
  61         int fd;
  62         char *envtmp, path[MAXPATHLEN];
  63
  64         if ((envtmp = getenv("TMPDIR")) != NULL)
  65                 (void)sprintf(path, "%s%s", envtmp, strrchr(_PATH_RANTMP, '/'));
  66         else
  67                 bcopy(_PATH_RANTMP, path, sizeof(_PATH_RANTMP));
  68
  69         sigfillset(&set);
  70         (void)sigprocmask(SIG_BLOCK, &set, &oset);
  71         if ((fd = mkstemp(path)) == -1)
  72                 error(path);
  73         (void)unlink(path);
  74         (void)sigprocmask(SIG_SETMASK, &oset, NULL);
  75         return(fd);
  76 }
  77
  78 void *
  79 emalloc(int len)
  80 {
  81         void *p;
  82
  83         if ((p = malloc((u_int)len)) == NULL)
  84                 error(archive);
  85         return(p);
  86 }
  87
  88 char *
  89 rname(char *path)
  90 {
  91         register char *ind;
  92
  93         return((ind = strrchr(path, '/')) ? ind + 1 : path);
  94 }
  95
  96 void
  97 badfmt(void)
  98 {
  99         errno = EFTYPE;
 100         error(archive);
 101 }
 102
 103 void
 104 error(char *name)
 105 {
 106         err(1, "%s", name);
 107 }