updwtmp, logwtmp — append an entry to the wtmp file
||const char *wtmp_file,|
|const struct utmp *ut
||const char *line,|
|const char *name,|
|const char *host
For link with −lutil.
updwtmp() appends the utmp
ut to the
logwtmp() constructs a utmp
host, current time and current
process ID. Then it calls
updwtmp() to append the structure to the
For an explanation of the terms used in this section, see attributes(7).
||Thread safety||MT-Unsafe sig:ALRM timer|
For consistency with the other "utmpx" functions (see getutxent(3)), glibc provides (since version 2.1):
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
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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.
You should have received a copy of the GNU General Public
License along with this manual; if not, see
Added info on availability, aeb, 971207
Added -lutil remark, 030718
2008-07-02, mtk, document updwtmpx()