projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /* |
| 2 | * Copyright (c) 1988 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 8ca81eb5 | 32 | * |
| 3ff6dd04 | 33 | * $Id: login.c,v 1.2 1994/02/23 09:56:47 rgrimes Exp $ |
| 15637ed4 RG |
34 | */ |
| 35 | ||
| 36 | #if defined(LIBC_SCCS) && !defined(lint) | |
| 37 | static char sccsid[] = "@(#)login.c 5.4 (Berkeley) 6/1/90"; | |
| 38 | #endif /* LIBC_SCCS and not lint */ | |
| 39 | ||
| 40 | #include <sys/types.h> | |
| 41 | #include <sys/file.h> | |
| 42 | #include <utmp.h> | |
| 43 | #include <stdio.h> | |
| 3ff6dd04 AC |
44 | #include <unistd.h> |
| 45 | #include <ttyent.h> | |
| 46 | ||
| 47 | typedef struct utmp UTMP; | |
| 15637ed4 RG |
48 | |
| 49 | void | |
| 50 | login(ut) | |
| 3ff6dd04 | 51 | UTMP *ut; |
| 15637ed4 RG |
52 | { |
| 53 | register int fd; | |
| 54 | int tty; | |
| 3ff6dd04 | 55 | UTMP utmp; |
| 15637ed4 | 56 | |
| 3ff6dd04 AC |
57 | if ((fd = open(_PATH_UTMP, O_RDWR|O_CREAT, 0644)) >= 0) { |
| 58 | if ((tty = ttyslot()) > 0) { | |
| 59 | (void)lseek(fd, (long)(tty * sizeof(UTMP)), L_SET); | |
| 60 | (void)write(fd, (char *)ut, sizeof(UTMP)); | |
| 61 | (void)close(fd); | |
| 62 | } else { | |
| 63 | setttyent(); | |
| 64 | for (tty = 0; getttyent(); tty++) | |
| 65 | ; | |
| 66 | endttyent(); | |
| 67 | (void)lseek(fd, (long)(tty * sizeof(UTMP)), L_SET); | |
| 68 | while (read(fd, (char *)&utmp, sizeof(UTMP)) == sizeof(UTMP)) { | |
| 69 | if (!utmp.ut_name[0]) { | |
| 70 | (void)lseek(fd, -(long)sizeof(UTMP), L_INCR); | |
| 71 | break; | |
| 72 | } | |
| 73 | } | |
| 74 | (void)write(fd, (char *)ut, sizeof(UTMP)); | |
| 75 | (void)close(fd); | |
| 76 | } | |
| 15637ed4 RG |
77 | } |
| 78 | if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) { | |
| 3ff6dd04 | 79 | (void)write(fd, (char *)ut, sizeof(UTMP)); |
| 15637ed4 RG |
80 | (void)close(fd); |
| 81 | } | |
| 82 | } |