| /*- |
| * Copyright (c) 2002 The NetBSD Foundation, Inc. |
| * All rights reserved. |
| * |
| * This code is derived from software contributed to The NetBSD Foundation |
| * by Christos Zoulas. |
| * |
| * 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 NetBSD |
| * Foundation, Inc. and its contributors. |
| * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. |
| */ |
| #include <sys/cdefs.h> |
| |
| #include <sys/types.h> |
| #include <sys/param.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <time.h> |
| #include <utmp.h> |
| |
| static struct utmp utmp; |
| static FILE *ut; |
| static char utfile[MAXPATHLEN] = _PATH_UTMP; |
| |
| void |
| setutent(void) |
| { |
| if (ut == NULL) |
| return; |
| (void)fseeko(ut, (off_t)0, SEEK_SET); |
| } |
| |
| struct utmp * |
| getutent(void) |
| { |
| if (ut == NULL) { |
| if ((ut = fopen(utfile, "r")) == NULL) |
| return NULL; |
| } |
| if (fread(&utmp, sizeof(utmp), 1, ut) == 1) |
| return &utmp; |
| return NULL; |
| } |
| |
| void |
| endutent(void) |
| { |
| if (ut != NULL) { |
| (void)fclose(ut); |
| ut = NULL; |
| } |
| } |
| |
| int |
| utmpname(const char *fname) |
| { |
| size_t len = strlen(fname); |
| |
| if (len >= sizeof(utfile)) |
| return 0; |
| |
| /* must not end in x! */ |
| if (fname[len - 1] == 'x') |
| return 0; |
| |
| (void)strlcpy(utfile, fname, sizeof(utfile)); |
| endutent(); |
| return 1; |
| } |