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- /*
- * Copyright (c) 1987 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1987 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)vipw.c 5.16 (Berkeley) 3/3/91";
- #endif /* not lint */
-
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <pwd.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- char *progname = "vipw";
- char *tempname;
-
- main()
- {
- register int pfd, tfd;
- struct stat begin, end;
-
- pw_init();
- pfd = pw_lock();
- tfd = pw_tmp();
- copyfile(pfd, tfd);
- (void)close(tfd);
-
- for (;;) {
- if (stat(tempname, &begin))
- pw_error(tempname, 1, 1);
- pw_edit(0);
- if (stat(tempname, &end))
- pw_error(tempname, 1, 1);
- if (begin.st_mtime == end.st_mtime) {
- (void)fprintf(stderr, "vipw: no changes made\n");
- pw_error((char *)NULL, 0, 0);
- }
- if (pw_mkdb())
- break;
- pw_prompt();
- }
- exit(0);
- }
-
- copyfile(from, to)
- register int from, to;
- {
- register int nr, nw, off;
- char buf[8*1024];
-
- while ((nr = read(from, buf, sizeof(buf))) > 0)
- for (off = 0; off < nr; nr -= nw, off += nw)
- if ((nw = write(to, buf + off, nr)) < 0)
- pw_error(tempname, 1, 1);
- if (nr < 0)
- pw_error(_PATH_MASTERPASSWD, 1, 1);
- }
-