udbexpand.c => udb.c

[unix-history] / usr / src / usr.sbin / kvm_mkdb / kvm_mkdb.c

/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1990 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)kvm_mkdb.c  5.12 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <db.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <paths.h>

char *tmp;
#define basename(cp)    ((tmp=rindex((cp), '/')) ? tmp+1 : (cp))

main(argc, argv)
       int argc;
       char **argv;
{
       extern int optind;
       DB *db;
       int ch;
       char *nlistpath, *nlistname, dbtemp[MAXPATHLEN], dbname[MAXPATHLEN];

       while ((ch = getopt(argc, argv, "")) != EOF)
               switch((char)ch) {
               case '?':
               default:
                       usage();
               }
       argc -= optind;
       argv += optind;

       nlistpath = argc > 1 ? argv[0] : _PATH_UNIX;
       nlistname = basename(nlistpath);

       (void)sprintf(dbtemp, "%s/kvm_%s.tmp", _PATH_VARRUN, nlistname);
       (void)sprintf(dbname, "%s/kvm_%s.db", _PATH_VARRUN, nlistname);
       (void)umask(0);
       db = dbopen(dbtemp, O_CREAT|O_WRONLY|O_EXCL,
           S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH, DB_HASH, NULL);
       if (!db) {
               (void)fprintf(stderr,
                   "kvm_mkdb: %s: %s\n", dbtemp, strerror(errno));
               exit(1);
       }
       create_knlist(nlistpath, db);
       (void)(db->close)(db);
       if (rename(dbtemp, dbname)) {
               (void)fprintf(stderr, "kvm_mkdb: %s to %s: %s.\n",
                   dbtemp, dbname, strerror(errno));
               exit(1);
       }
       exit(0);
}

error(n)
       char *n;
{
       int sverr;

       sverr = errno;
       (void)fprintf(stderr, "kvm_mkdb: ");
       if (n)
               (void)fprintf(stderr, "%s: ", n);
       (void)fprintf(stderr, "%s\n", strerror(sverr));
       exit(1);
}

usage()
{
       (void)fprintf(stderr, "usage: kvm_mkdb [file]\n");
       exit(1);
}