xref: /dflybsd-src/lib/libc/gen/getlastlogx.3 (revision e2e9821d3095715dc724545a180e47d9b25f2082)

.\"	$NetBSD: getlastlogx.3,v 1.1 2003/08/26 17:37:51 wiz Exp $
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Thomas Klausner.
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.Dd September 10, 2019
.Dt GETLASTLOGX 3
.Os
.Sh NAME
.Nm getlastlogx ,
.Nm updlastlogx ,
.Nm updwtmpx ,
.Nm _updwtmpx ,
.Nm utmpxname
.Nd user accounting database functions
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In utmpx.h
.Ft struct lastlogx *
.Fn getlastlogx "const char *fname" "uid_t uid" "struct lastlogx *ll"
.Ft int
.Fn updlastlogx "const char *fname" "uid_t uid" "struct lastlogx *ll"
.Ft void
.Fn updwtmpx "const char *file" "const struct utmpx *utx"
.Ft int
.Fn _updwtmpx "const char *file" "const struct utmpx *utx"
.Ft int
.Fn utmpxname "const char *fname"
.Sh DESCRIPTION
The
.Fn getlastlogx
function looks up the entry for the user with user id
.Fa uid
in the
.Xr lastlogx 5
file given by
.Fa fname
and returns it in
.Fa \&ll .
If the provided
.Fa \&ll
is
.Dv NULL ,
the necessary space will be allocated by
.Fn getlastlogx
and should be
.Fn free Ns d
by the caller.
.Pp
The
.Fn updlastlogx
function tries to update the information for the user with the user id
.Fa uid
in the
.Xr lastlogx 5
file given by
.Fa fname
with the data supplied in
.Fa \&ll .
A
.Ft struct lastlogx
is defined like this:
.Bd -literal
struct lastlogx {
        struct timeval ll_tv;           /* time entry was created */
        char ll_line[_UTX_LINESIZE];    /* tty name */
        char ll_host[_UTX_HOSTSIZE];    /* host name */
        struct sockaddr_storage ll_ss;  /* address where entry was made from */
};
.Ed
All the fields should be filled out by the caller.
.Pp
The
.Fn updwtmpx
and
.Fn _updwtmpx
functions update the
.Xr wtmpx 5
file
.Fa file
with the
.Xr utmpx 5
entry
.Fa utx .
.Pp
The
.Fn utmpxname
function sets the default
.Xr utmpx 5
database file name to
.Fa fname .
.Sh RETURN VALUES
.Fn getlastlogx
returns the found entry on success, or
.Dv NULL
if it could not open the database, could not find an entry matching
.Fa uid
in there, or could not allocate the necessary space (in case
.Fa \&ll
was
.Dv NULL ) .
.Pp
.Fn utmpxname
returns 1 on success, or 0 if the supplied file name was too long or
did not end with
.Sq x .
.Pp
.Fn updlastlogx
and
.Fn _updwtmpx
return 0 on success, or \-1 in case the database or file respectively
could not be opened or the data not written into it.
.Sh SEE ALSO
.Xr endutxent 3 ,
.Xr loginx 3 ,
.Xr utmpx 5
.Sh HISTORY
The functions
.Fn updwtmpx ,
.Fn _updwtmpx
and
.Fn utmpxname
first appeared in
.Tn Solaris .
.Nm getlastlogx
and
.Nm updlastlogx
first appeared in
.Nx 2.0 .