updwtmp, logwtmp — append an entry to the wtmp file
#include <utmp.h>
void
updwtmp( |
const char *wtmp_file, |
const struct utmp *ut); |
void
logwtmp( |
const char *line, |
| const char *name, | |
const char *host); |
updwtmp() appends the utmp
structure ut to the
wtmp file.
logwtmp() constructs a utmp
structure using line,
name, host, current time and current
process ID. Then it calls updwtmp() to append the structure to the
wtmp file.
Both functions are available under glibc2, but not under
libc5. However, logwtmp() used
to occur in the old libbsd. These days, the logwtmp() function is included in libutil.
(Hence you'll need to add −lutil to your compiler command line to
get it.)
For consistency with the other "utmpx" functions (see getutxent(3)), glibc provides (since version 2.1):
#include <utmpx.h>void updwtmpx(const char *wtmpx_file,const struct utmpx *utx);
This function performs the same task as updwtmp(), but differs in that it takes a
utmpx structure as its last
argument.
This page is part of release 3.33 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at http://man7.org/linux/man-pages/.
|
Copyright 1997 Nicolás Lichtmaier <nickdebian.org> Created Wed Jul 2 23:27:34 ART 1997 This is free documentation; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU General Public License's references to "object code" and "executables" are to be interpreted as the output of any document formatting or typesetting system, including intermediate and printed output. This manual is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Added info on availability, aeb, 971207 Added -lutil remark, 030718 2008-07-02, mtk, document updwtmpx() |