freebsd-src/lib/libulog/ulog_setutxfile.3
Ed Schouten 42782e4717 Massively extend libulog:
- Just like struct utmp, store strings inside struct utmpx itself. This
  is needed to make things like pututxline() work.
- Add ut_id and ut_pid fields, even though they have little use in our
  implementation.
- It turns out our "reboot" wtmp entries indicate a system boot, so
  remove REBOOT_TIME
- Implement getutxline() and pututxline
- Add getutxuser() and setutxfile(), which allows us to crawl wtmp and
  lastlog files as well.
- Add _ULOG_POSIX_NAMES, so we can already use the POSIX names if we
  really want to.
2009-12-05 19:53:29 +00:00

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.\" Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org>
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.Dd December 5, 2009
.Os
.Dt ULOG_SETUTXFILE 3
.Sh NAME
.Nm ulog_setutxfile ,
.Nm ulog_getutxuser
.Nd additional user login records management
.Sh LIBRARY
.Lb libulog
.Sh SYNOPSIS
.In ulog.h
.Ft int
.Fn ulog_setutxfile "int type" "const char *file"
.Ft struct ulog_utmpx *
.Fn ulog_getutxuser "const char *user"
.Sh DESCRIPTION
The
.Fn ulog_setutxfile
and
.Fn ulog_getutxuser
functions are extensions to the standard
.In ulog.h
interface.
.Pp
The
.Fn ulog_setutxfile
function is similar to
.Fn ulog_setutxent ,
but is capable of returning an error code and also gives access to other
login record files by using one of the following values for
.Fa type :
.Bl -tag -width UTXF_LASTLOG
.It Dv UTXF_UTMP
Open the default
.Nm utmp
file, which is indexed by TTY device.
.It Dv UTXF_WTMP
Open the
.Nm wtmp
file, which is indexed by time.
.It Dv UTXF_LASTLOG
Open the
.Nm lastlog
file, which is indexed by user ID.
.El
.Pp
The
.Fa file
argument determines the file to be opened.
If left null, implementation-defined default file is opened.
.Pp
The
.Fn ulog_getutxuser
searches the currently opened file until an entry is found whose
.Fa ut_user
is equal to the
.Fa user
argument.
.Sh RETURN VALUES
If succesful,
.Fn ulog_setutxfile
returns 0.
It returns -1 on failure.
.Sh SEE ALSO
.Xr ulog_getutxent 3
.Sh HISTORY
These functions appeared in
.Fx 9.0 .