Copyright (c) 2003 The NetBSD Foundation, Inc.
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.Dd August 26, 2003 .Dt GETLASTLOGX 3 .Os .Sh NAME .Nm getlastlogx , .Nm getutmp , .Nm getutmpx , .Nm updlastlogx , .Nm updwtmpx , .Nm utmpxname .Nd user accounting database functions .Sh LIBRARY .Lb libc .Sh SYNOPSIS n utmpx.h .Ft struct lastlogx * .Fn getlastlogx "const char *fname" "uid_t uid" "struct lastlogx *ll" .Ft void .Fn getutmp "const struct utmpx *ux" "struct utmp *u" .Ft void .Fn getutmpx "const struct utmp *u" "struct utmpx *ux" .Ft int .Fn updlastlogx "const char *fname" "uid_t uid" "struct lastlogx *ll" .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.
p The .Fn getutmp function fills out the entries in the struct utmp .Fa u with the data provided in the struct utmpx .Fa ux . .Fn getutmpx does the opposite, filling out the entries in the struct utmpx .Fa ux with the data provided in the struct utmp .Fa u , and initializing all the unknown fields to 0. The sole exception is the .Fa ut_type field, which will be initialized to .Dv USER_PROCESS .
p 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: d -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.
p The .Fn updwtmpx function updates the .Xr wtmpx 5 file .Fa file with the .Xr utmpx 5 entry .Fa utx .
p 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 ) .
p .Fn utmpxname returns 1 on success, or 0 if the supplied file name was too long or did not end with .Sq x .
p .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 getutmp , .Fn getutmpx , .Fn updwtmpx , and .Fn utmpxname first appeared in .Tn Solaris . .Nm getlastlogx and .Nm updlastlogx first appeared in .Nx 2.0 .
Indexes created Sun Nov 02 07:10:05 GMT 2025