From c3387319c8074d1e5cb1830b18232e0217664c37 Mon Sep 17 00:00:00 2001 From: "William F. Jolitz" Date: Fri, 26 Apr 1991 14:19:18 -0800 Subject: [PATCH] 386BSD 0.0 development Work on file usr/src/usr.bin/whoami/whoami.c Work on file usr/src/usr.bin/whoami/whoami.1 Co-Authored-By: Lynne Greer Jolitz Synthesized-from: 386BSD-0.0/src --- usr/src/usr.bin/whoami/whoami.1 | 63 +++++++++++++++++++++++++++++++++ usr/src/usr.bin/whoami/whoami.c | 59 ++++++++++++++++++++++++++++++ 2 files changed, 122 insertions(+) create mode 100644 usr/src/usr.bin/whoami/whoami.1 create mode 100644 usr/src/usr.bin/whoami/whoami.c diff --git a/usr/src/usr.bin/whoami/whoami.1 b/usr/src/usr.bin/whoami/whoami.1 new file mode 100644 index 0000000000..144ae7a7ed --- /dev/null +++ b/usr/src/usr.bin/whoami/whoami.1 @@ -0,0 +1,63 @@ +.\" Copyright (c) 1980, 1990, 1991 Regents of the University of California. +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)whoami.1 6.2 (Berkeley) 4/23/91 +.\" +.Dd April 23, 1991 +.Dt WHOAMI 1 +.Os BSD 3 +.Sh NAME +.Nm whoami +.Nd print effective current user id +.Sh SYNOPSIS +.Nm whoami +.Sh DESCRIPTION +.Nm Whoami +prints your effective user id. +It works even if you are +.Xr su Ns 'd , +while +.Dq Li who am i +does not since +it uses +.Pa /var/run/utmp . +.Sh FILES +.Bl -tag -width /etc/passwd +.It Pa /etc/passwd +Name data base +.El +.Sh SEE ALSO +.Xr who 1 +.Sh HISTORY +The +.Nm +command appeared in +.Bx 3.0 . diff --git a/usr/src/usr.bin/whoami/whoami.c b/usr/src/usr.bin/whoami/whoami.c new file mode 100644 index 0000000000..61d70a4c71 --- /dev/null +++ b/usr/src/usr.bin/whoami/whoami.c @@ -0,0 +1,59 @@ +/* + * Copyright (c) 1988 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +char copyright[] = +"@(#) Copyright (c) 1988 Regents of the University of California.\n\ + All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)whoami.c 5.5 (Berkeley) 3/2/91"; +#endif /* not lint */ + +#include +#include + +main() +{ + struct passwd *p; + uid_t uid; + + uid = geteuid(); + if (!(p = getpwuid(uid))) { + printf("whoami: no login associated with uid %u.\n", uid); + exit(1); + } + printf("%s\n", p->pw_name); + exit(0); +} -- 2.20.1