2 * Copyright (c) 1993 - 1994, Julianne Frances Haugh
3 * Copyright (c) 1996 - 1998, Marek Michałkiewicz
4 * Copyright (c) 2005 , Tomasz Kłoczko
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the copyright holders or contributors may not be used to
16 * endorse or promote products derived from this software without
17 * specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
22 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 static char rcsid[] = "$Id: utent.c 1980 2008-04-27 00:40:09Z nekral-guest $";
45 static int utmp_fd = -1;
46 static struct utmp utmp_buf;
49 * setutent - open or rewind the utmp file
55 if ((utmp_fd = open (_UTMP_FILE, O_RDWR)) == -1)
56 utmp_fd = open (_UTMP_FILE, O_RDONLY);
59 lseek (utmp_fd, (off_t) 0L, SEEK_SET);
63 * endutent - close the utmp file
75 * getutent - get the next record from the utmp file
78 struct utmp *getutent (void)
86 if (read (utmp_fd, &utmp_buf, sizeof utmp_buf) != sizeof utmp_buf)
93 * getutline - get the utmp entry matching ut_line
96 struct utmp *getutline (const struct utmp *utent)
102 while (new = getutent ())
103 if (strncmp (new->ut_line, save.ut_line, sizeof new->ut_line))
108 return (struct utmp *) 0;
111 extern int errno; /* warning: ANSI C forbids an empty source file */