make $TMPDIR actually work; print actual temp name on mkstemp() error

[unix-history] / usr / src / usr.bin / ranlib / misc.c

/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Hugh Smith at The University of Guelph.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)misc.c      5.4 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/signal.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "pathnames.h"

extern char *archive;                   /* archive name */
char *tname = "temporary file";         /* temporary file "name" */

tmp()
{
       sigset_t set, oset;
       int fd;
       char *envtmp, path[MAXPATHLEN];

       if ((envtmp = getenv("TMPDIR")) != NULL)
               (void)sprintf(path, "%s%s", envtmp, strrchr(_PATH_RANTMP, '/'));
       else
               bcopy(_PATH_RANTMP, path, sizeof(_PATH_RANTMP));
       
       sigfillset(&set);
       (void)sigprocmask(SIG_BLOCK, &set, &oset);
       if ((fd = mkstemp(path)) == -1)
               error(path);
       (void)unlink(path);
       (void)sigprocmask(SIG_SETMASK, &oset, NULL);
       return(fd);
}

void *
emalloc(len)
       int len;
{
       void *p;

       if ((p = malloc((u_int)len)) == NULL)
               error(archive);
       return(p);
}

char *
rname(path)
       char *path;
{
       register char *ind;

       return((ind = rindex(path, '/')) ? ind + 1 : path);
}

badfmt()
{
       errno = EFTYPE;
       error(archive);
}

error(name)
       char *name;
{
       (void)fprintf(stderr, "ranlib: %s: %s\n", name, strerror(errno));
       exit(1);
}