telnetd term termcap tget time touch tr \
truncate tty udpstat umount uname unexpand \
unstack update uud uue version vol wc \
- whereis which who write writeisofs fetch \
+ whereis which write writeisofs fetch \
xargs yes zdump zmodem pkgin_cd pkgin_all \
worldstone updateboot update_bootcfg
+++ /dev/null
-PROG= who
-MAN=
-
-.include <bsd.prog.mk>
+++ /dev/null
-/* who 1.5 - tell who is currently logged in Author: Kees J. Bot
- * 9 Jul 1989
- */
-#define nil 0
-#include <sys/types.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <utmp.h>
-#include <time.h>
-#include <string.h>
-#include <paths.h>
-
-char PATH_UTMP[] = _PATH_UTMP;
-
-char day[] = "SunMonTueWedThuFriSat";
-char month[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
-
-int main(int argc, char **argv)
-{
- char *tmp= PATH_UTMP;
- FILE *f;
- struct utmp ut;
- struct tm *tm;
- int slot, wtmp= 0, once= 0;
-
- if (argc > 3) {
- fprintf(stderr, "Usage: who <account-file> | who am i\n");
- exit(1);
- }
- if (argc == 2) {
- tmp= argv[1];
- wtmp= 1;
- }
-
- if ((f= fopen(tmp, "r")) == nil) {
- fprintf(stderr, "who: can't open %s\n", tmp);
- exit(1);
- }
- if (argc == 3) {
- if ((slot= ttyslot()) < 0) {
- fprintf(stderr, "who: no access to terminal.\n");
- exit(1);
- }
- fseek(f, (off_t) sizeof(ut) * slot, 0);
- once= 1;
- }
-
- while (fread((char *) &ut, sizeof(ut), 1, f) == 1) {
- if (!wtmp && ut.ut_name[0] == 0) continue;
-
- tm= localtime(&ut.ut_time);
-
- printf("%-9.8s %-9.8s %.3s %.3s %2d %02d:%02d",
- ut.ut_name,
- ut.ut_line,
- day + (3 * tm->tm_wday),
- month + (3 * tm->tm_mon),
- tm->tm_mday,
- tm->tm_hour,
- tm->tm_min
- );
-
- if (ut.ut_host[0] != 0) printf(" (%.*s)",
- (int) sizeof(ut.ut_host), ut.ut_host);
-
- printf("\n");
- if (once) break;
- }
- exit(0);
-}
term.1 termcap.1 tget.1 time.1 tr.1 true.1 \
truncate.1 tty.1 umount.1 uname.1 unexpand.1 \
uud.1 uue.1 vol.1 wc.1 whereis.1 which.1 \
- who.1 write.1 xargs.1 yap.1 yes.1 linkfarm.1 pkg_view.1
+ write.1 xargs.1 yap.1 yes.1 linkfarm.1 pkg_view.1
MLINKS += ash.1 sh.1
MLINKS += ash.1 ..1
+++ /dev/null
-.TH WHO 1
-.SH NAME
-who \- print list of currently logged in users
-.SH SYNOPSIS
-\fBwho\fR [\fIfile\fR]\fR
-.br
-.de FL
-.TP
-\\fB\\$1\\fR
-\\$2
-..
-.de EX
-.TP 20
-\\fB\\$1\\fR
-# \\$2
-..
-.SH EXAMPLES
-.TP 20
-.B who
-# Print user names, terminals and times
-.SH DESCRIPTION
-.PP
-\fIWho\fR prints a list of currently logged in users. For each one,
-the user name, terminal, and login time is printed.
-This program gets its information from the file \fI/etc/utmp\fR, which
-is updated by init and login.
-If the file does not exist, neither of these will create it, and
-\fIwho\fR will not work. Note that if you decide to create an empty
-\fI/usr/adm/wtmp\fR to enable the login accounting, it will grow forever and
-eventually fill up your disk unless you manually truncate it from time to time.
-If an optional file name is provided, the logins in that file will be printed.
-.SH "SEE ALSO"
-.BR utmp (5).
2012/10/17 12:00:00,usr.bin/tput
2012/10/17 12:00:00,usr.bin/tsort
2010/10/06 07:59:18,usr.bin/uniq
+2013/03/15 12:00:00,usr.bin/who
2012/10/17 12:00:00,usr.bin/xinstall
2012/02/10 16:16:12,usr.sbin/chroot
2011/11/03 20:46:41,usr.sbin/installboot
uniq \
\
\
- \
+ who \
xinstall
.if !defined(__MINIX)
--- /dev/null
+# $NetBSD: Makefile,v 1.9 2009/04/14 22:15:29 lukem Exp $
+# @(#)Makefile 8.1 (Berkeley) 6/6/93
+
+PROG= who
+SRCS= who.c utmpentry.c
+CPPFLAGS+= -DSUPPORT_UTMPX -DSUPPORT_UTMP
+
+.include <bsd.prog.mk>
--- /dev/null
+/* $NetBSD: utmpentry.c,v 1.17 2009/05/01 14:26:10 christos Exp $ */
+
+/*-
+ * Copyright (c) 2002 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: utmpentry.c,v 1.17 2009/05/01 14:26:10 christos Exp $");
+#endif
+
+#include <sys/stat.h>
+
+#include <time.h>
+#include <string.h>
+#include <err.h>
+#include <stdlib.h>
+
+#ifdef SUPPORT_UTMP
+#include <utmp.h>
+#endif
+#ifdef SUPPORT_UTMPX
+#include <utmpx.h>
+#endif
+
+#include "utmpentry.h"
+
+
+/* Fail the compile if x is not true, by constructing an illegal type. */
+#define COMPILE_ASSERT(x) /*LINTED null effect */ \
+ ((void)sizeof(struct { unsigned : ((x) ? 1 : -1); }))
+
+
+#ifdef SUPPORT_UTMP
+static void getentry(struct utmpentry *, struct utmp *);
+static struct timespec utmptime = {0, 0};
+#endif
+#ifdef SUPPORT_UTMPX
+static void getentryx(struct utmpentry *, struct utmpx *);
+static struct timespec utmpxtime = {0, 0};
+#endif
+#if defined(SUPPORT_UTMPX) || defined(SUPPORT_UTMP)
+static int setup(const char *);
+static void adjust_size(struct utmpentry *e);
+#endif
+
+int maxname = 8, maxline = 8, maxhost = 16;
+int etype = 1 << USER_PROCESS;
+static int numutmp = 0;
+static struct utmpentry *ehead;
+
+#if defined(SUPPORT_UTMPX) || defined(SUPPORT_UTMP)
+static void
+adjust_size(struct utmpentry *e)
+{
+ int max;
+
+ if ((max = strlen(e->name)) > maxname)
+ maxname = max;
+ if ((max = strlen(e->line)) > maxline)
+ maxline = max;
+ if ((max = strlen(e->host)) > maxhost)
+ maxhost = max;
+}
+
+static int
+setup(const char *fname)
+{
+ int what = 3;
+ struct stat st;
+ const char *sfname;
+
+ if (fname == NULL) {
+#ifdef SUPPORT_UTMPX
+ setutxent();
+#endif
+#ifdef SUPPORT_UTMP
+ setutent();
+#endif
+ } else {
+ size_t len = strlen(fname);
+ if (len == 0)
+ errx(1, "Filename cannot be 0 length.");
+ what = fname[len - 1] == 'x' ? 1 : 2;
+ if (what == 1) {
+#ifdef SUPPORT_UTMPX
+ if (utmpxname(fname) == 0)
+ warnx("Cannot set utmpx file to `%s'",
+ fname);
+#else
+ warnx("utmpx support not compiled in");
+#endif
+ } else {
+#ifdef SUPPORT_UTMP
+ if (utmpname(fname) == 0)
+ warnx("Cannot set utmp file to `%s'",
+ fname);
+#else
+ warnx("utmp support not compiled in");
+#endif
+ }
+ }
+#ifdef SUPPORT_UTMPX
+ if (what & 1) {
+ sfname = fname ? fname : _PATH_UTMPX;
+ if (stat(sfname, &st) == -1) {
+ warn("Cannot stat `%s'", sfname);
+ what &= ~1;
+ } else {
+ if (timespeccmp(&st.st_mtimespec, &utmpxtime, >))
+ utmpxtime = st.st_mtimespec;
+ else
+ what &= ~1;
+ }
+ }
+#endif
+#ifdef SUPPORT_UTMP
+ if (what & 2) {
+ sfname = fname ? fname : _PATH_UTMP;
+ if (stat(sfname, &st) == -1) {
+ warn("Cannot stat `%s'", sfname);
+ what &= ~2;
+ } else {
+ if (timespeccmp(&st.st_mtimespec, &utmptime, >))
+ utmptime = st.st_mtimespec;
+ else
+ what &= ~2;
+ }
+ }
+#endif
+ return what;
+}
+#endif
+
+void
+endutentries(void)
+{
+ struct utmpentry *ep;
+
+#ifdef SUPPORT_UTMP
+ timespecclear(&utmptime);
+#endif
+#ifdef SUPPORT_UTMPX
+ timespecclear(&utmpxtime);
+#endif
+ ep = ehead;
+ while (ep) {
+ struct utmpentry *sep = ep;
+ ep = ep->next;
+ free(sep);
+ }
+ ehead = NULL;
+ numutmp = 0;
+}
+
+int
+getutentries(const char *fname, struct utmpentry **epp)
+{
+#ifdef SUPPORT_UTMPX
+ struct utmpx *utx;
+#endif
+#ifdef SUPPORT_UTMP
+ struct utmp *ut;
+#endif
+#if defined(SUPPORT_UTMP) || defined(SUPPORT_UTMPX)
+ struct utmpentry *ep;
+ int what = setup(fname);
+ struct utmpentry **nextp = &ehead;
+ switch (what) {
+ case 0:
+ /* No updates */
+ *epp = ehead;
+ return numutmp;
+ default:
+ /* Need to re-scan */
+ ehead = NULL;
+ numutmp = 0;
+ }
+#endif
+
+#ifdef SUPPORT_UTMPX
+ while ((what & 1) && (utx = getutxent()) != NULL) {
+ if (fname == NULL && ((1 << utx->ut_type) & etype) == 0)
+ continue;
+ if ((ep = calloc(1, sizeof(struct utmpentry))) == NULL) {
+ warn(NULL);
+ return 0;
+ }
+ getentryx(ep, utx);
+ *nextp = ep;
+ nextp = &(ep->next);
+ }
+#endif
+
+#ifdef SUPPORT_UTMP
+ if ((etype & (1 << USER_PROCESS)) != 0) {
+ while ((what & 2) && (ut = getutent()) != NULL) {
+ if (fname == NULL && (*ut->ut_name == '\0' ||
+ *ut->ut_line == '\0'))
+ continue;
+ /* Don't process entries that we have utmpx for */
+ for (ep = ehead; ep != NULL; ep = ep->next) {
+ if (strncmp(ep->line, ut->ut_line,
+ sizeof(ut->ut_line)) == 0)
+ break;
+ }
+ if (ep != NULL)
+ continue;
+ if ((ep = calloc(1, sizeof(*ep))) == NULL) {
+ warn(NULL);
+ return 0;
+ }
+ getentry(ep, ut);
+ *nextp = ep;
+ nextp = &(ep->next);
+ }
+ }
+#endif
+ numutmp = 0;
+#if defined(SUPPORT_UTMP) || defined(SUPPORT_UTMPX)
+ if (ehead != NULL) {
+ struct utmpentry *from = ehead, *save;
+
+ ehead = NULL;
+ while (from != NULL) {
+ for (nextp = &ehead;
+ (*nextp) && strcmp(from->line, (*nextp)->line) > 0;
+ nextp = &(*nextp)->next)
+ continue;
+ save = from;
+ from = from->next;
+ save->next = *nextp;
+ *nextp = save;
+ numutmp++;
+ }
+ }
+ *epp = ehead;
+ return numutmp;
+#else
+ *epp = NULL;
+ return 0;
+#endif
+}
+
+#ifdef SUPPORT_UTMP
+static void
+getentry(struct utmpentry *e, struct utmp *up)
+{
+ COMPILE_ASSERT(sizeof(e->name) > sizeof(up->ut_name));
+ COMPILE_ASSERT(sizeof(e->line) > sizeof(up->ut_line));
+ COMPILE_ASSERT(sizeof(e->host) > sizeof(up->ut_host));
+
+ /*
+ * e has just been calloc'd. We don't need to clear it or
+ * append null-terminators, because its length is strictly
+ * greater than the source string. Use strncpy to _read_
+ * up->ut_* because they may not be terminated. For this
+ * reason we use the size of the _source_ as the length
+ * argument.
+ */
+ (void)strncpy(e->name, up->ut_name, sizeof(up->ut_name));
+ (void)strncpy(e->line, up->ut_line, sizeof(up->ut_line));
+ (void)strncpy(e->host, up->ut_host, sizeof(up->ut_host));
+
+ e->tv.tv_sec = up->ut_time;
+ e->tv.tv_usec = 0;
+ e->pid = 0;
+ e->term = 0;
+ e->exit = 0;
+ e->sess = 0;
+ e->type = USER_PROCESS;
+ adjust_size(e);
+}
+#endif
+
+#ifdef SUPPORT_UTMPX
+static void
+getentryx(struct utmpentry *e, struct utmpx *up)
+{
+ COMPILE_ASSERT(sizeof(e->name) > sizeof(up->ut_name));
+ COMPILE_ASSERT(sizeof(e->line) > sizeof(up->ut_line));
+ COMPILE_ASSERT(sizeof(e->host) > sizeof(up->ut_host));
+
+ /*
+ * e has just been calloc'd. We don't need to clear it or
+ * append null-terminators, because its length is strictly
+ * greater than the source string. Use strncpy to _read_
+ * up->ut_* because they may not be terminated. For this
+ * reason we use the size of the _source_ as the length
+ * argument.
+ */
+ (void)strncpy(e->name, up->ut_name, sizeof(up->ut_name));
+ (void)strncpy(e->line, up->ut_line, sizeof(up->ut_line));
+ (void)strncpy(e->host, up->ut_host, sizeof(up->ut_host));
+
+ e->tv = up->ut_tv;
+ e->pid = up->ut_pid;
+ e->term = up->ut_exit.e_termination;
+ e->exit = up->ut_exit.e_exit;
+ e->sess = up->ut_session;
+ e->type = up->ut_type;
+ adjust_size(e);
+}
+#endif
--- /dev/null
+/* $NetBSD: utmpentry.h,v 1.7 2008/07/13 20:07:49 dholland Exp $ */
+
+/*-
+ * Copyright (c) 2002 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#if defined(SUPPORT_UTMPX)
+# include <utmpx.h>
+# define WHO_NAME_LEN _UTX_USERSIZE
+# define WHO_LINE_LEN _UTX_LINESIZE
+# define WHO_HOST_LEN _UTX_HOSTSIZE
+#elif defined(SUPPORT_UTMP)
+# include <utmp.h>
+# define WHO_NAME_LEN UT_NAMESIZE
+# define WHO_LINE_LEN UT_LINESIZE
+# define WHO_HOST_LEN UT_HOSTSIZE
+#else
+# error Either SUPPORT_UTMPX or SUPPORT_UTMP must be defined!
+#endif
+
+
+struct utmpentry {
+ char name[WHO_NAME_LEN + 1];
+ char line[WHO_LINE_LEN + 1];
+ char host[WHO_HOST_LEN + 1];
+ struct timeval tv;
+ pid_t pid;
+ uint16_t term;
+ uint16_t exit;
+ uint16_t sess;
+ uint16_t type;
+ struct utmpentry *next;
+};
+
+extern int maxname, maxline, maxhost;
+extern int etype;
+
+/*
+ * getutentries provides a linked list of struct utmpentry and returns
+ * the number of entries. The first argument, if not null, names an
+ * alternate utmp(x) file to look in.
+ *
+ * The memory returned by getutentries belongs to getutentries. The
+ * list returned (or elements of it) may be returned again later if
+ * utmp hasn't changed in the meantime.
+ *
+ * endutentries clears and frees the cached data.
+ */
+
+int getutentries(const char *, struct utmpentry **);
+void endutentries(void);
--- /dev/null
+.\" $NetBSD: who.1,v 1.22 2007/01/18 00:15:05 wiz Exp $
+.\"
+.\" Copyright (c) 1986, 1991, 1993
+.\" The 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. 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.
+.\"
+.\" @(#)who.1 8.2 (Berkeley) 12/30/93
+.\"
+.Dd January 17, 2007
+.Dt WHO 1
+.Os
+.Sh NAME
+.Nm who
+.Nd display who is logged in
+.Sh SYNOPSIS
+.Nm
+.Op Fl abdHlmqrstTuv
+.Op Ar file
+.Nm
+.Ar am i
+.Sh DESCRIPTION
+The
+.Nm
+utility displays a list of all users currently logged on, showing for
+each user the login name, tty name, the date and time of login, and
+hostname if not local.
+.Pp
+Available options:
+.Pp
+.Bl -tag -width file
+.It Fl a
+Same as
+.Fl -bdlprTtuv .
+.It Fl b
+Time of last system boot.
+.It Fl d
+Print dead processes.
+.It Fl H
+Write column headings above the regular output.
+.It Fl l
+Print system login processes.
+.It Fl m
+Only print information about the current terminal.
+This is the
+.Tn POSIX
+way of saying
+.Nm
+.Ar am i .
+.It Fl p
+Print active processes spawned by
+.Xr init 8 .
+.It Fl q
+.Dq Quick mode :
+List only the names and the number of users currently logged on.
+When this option is used, all other options are ignored.
+.It Fl r
+Print the current runlevel.
+Supported runlevels are:
+.Bl -tag -width "s (SINGLE_USER)"
+.It Dv d Pq Dv DEATH
+The system has halted.
+.It Dv s Pq Dv SINGLE_USER
+The system is running in single user mode.
+.It Dv r Pq Dv RUNCOM
+The system is executing
+.Pa /etc/rc .
+.It Dv t Pq Dv READ_TTYS
+The system is processing
+.Pa /etc/ttys .
+.It Dv m Pq Dv MULTI_USER
+The system is running in multi-user mode.
+.It Dv T Pq Dv CLEAN_TTYS
+The system is in the process of stopping processes
+associated with terminal devices.
+.It Dv c Pq Dv CATATONIA
+The system is in the process of shutting down and will
+not create new processes.
+.El
+.It Fl s
+List only the name, line and time fields.
+This is the default.
+.It Fl T
+Print a character after the user name indicating the state of the
+terminal line:
+.Sq +
+if the terminal is writable;
+.Sq -
+if it is not;
+and
+.Sq \&?
+if a bad line is encountered.
+.It Fl t
+Print last system clock change.
+.It Fl u
+Print the idle time for each user, and the associated process ID.
+.It Fl v
+When printing of more information is requested with
+.Fl u ,
+this switch can be used to also printed
+process termination signals,
+process exit status,
+session id for windowing
+and the type of the entry, see documentation of ut_type in
+.Xr getutxent 3 .
+.It Ar \&am I
+Returns the invoker's real user name.
+.It Ar file
+By default,
+.Nm
+gathers information from the file
+.Pa /var/run/utmpx .
+An alternative
+.Ar file
+may be specified which is usually
+.Pa /var/log/wtmpx
+(or
+.Pa /var/log/wtmp ,
+or
+.Pa /var/log/wtmpx.[0-6]
+or
+.Pa /var/log/wtmp.[0-6]
+depending on site policy as
+.Pa wtmpx
+can grow quite large and daily versions may or may not
+be kept around after compression by
+.Xr ac 8 ) .
+The
+.Pa wtmpx
+and
+.Pa wtmp
+file contains a record of every login, logout,
+crash, shutdown and date change
+since
+.Pa wtmpx
+and
+.Pa wtmp
+were last truncated or
+created.
+.El
+.Pp
+If
+.Pa /var/log/wtmpx
+or
+.Pa /var/log/wtmp
+are being used as the file, the user name may be empty
+or one of the special characters '|', '}' and '~'.
+Logouts produce an output line without any user name.
+For more information on the
+special characters, see
+.Xr utmp 5 .
+.Sh FILES
+.Bl -tag -width /var/log/wtmp.[0-6] -compact
+.It Pa /var/run/utmp
+.It Pa /var/run/utmpx
+.It Pa /var/log/wtmp
+.It Pa /var/log/wtmp.[0-6]
+.It Pa /var/log/wtmpx
+.It Pa /var/log/wtmpx.[0-6]
+.El
+.Sh SEE ALSO
+.Xr last 1 ,
+.Xr mesg 1 ,
+.Xr users 1 ,
+.Xr getuid 2 ,
+.Xr utmp 5 ,
+.Xr utmpx 5
+.Sh STANDARDS
+The
+.Nm
+utility is expected to conform to
+.St -p1003.2-92 .
+.Sh HISTORY
+A
+.Nm
+utility appeared in
+.At v6 .
--- /dev/null
+/* $NetBSD: who.c,v 1.23 2008/07/24 15:35:41 christos Exp $ */
+
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Michael Fischbein.
+ *
+ * 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. 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.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1989, 1993\
+ The Regents of the University of California. All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)who.c 8.1 (Berkeley) 6/6/93";
+#endif
+__RCSID("$NetBSD: who.c,v 1.23 2008/07/24 15:35:41 christos Exp $");
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <locale.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#ifdef SUPPORT_UTMP
+#include <utmp.h>
+#endif
+#ifdef SUPPORT_UTMPX
+#include <utmpx.h>
+#endif
+
+#include "utmpentry.h"
+
+static void output_labels(void);
+static void who_am_i(const char *, int);
+static void usage(void) __dead;
+static void process(const char *, int);
+static void eprint(const struct utmpentry *);
+static void print(const char *, const char *, time_t, const char *, pid_t pid,
+ uint16_t term, uint16_t xit, uint16_t sess, uint16_t type);
+static void quick(const char *);
+
+static int show_term; /* show term state */
+static int show_idle; /* show idle time */
+static int show_details; /* show exit status etc. */
+
+struct ut_type_names {
+ int type;
+ const char *name;
+} ut_type_names[] = {
+#ifdef SUPPORT_UTMPX
+ { EMPTY, "empty" },
+ { RUN_LVL, "run level" },
+ { BOOT_TIME, "boot time" },
+ { OLD_TIME, "old time" },
+ { NEW_TIME, "new time" },
+ { INIT_PROCESS, "init process" },
+ { LOGIN_PROCESS, "login process" },
+ { USER_PROCESS, "user process" },
+ { DEAD_PROCESS, "dead process" },
+#if defined(_NETBSD_SOURCE)
+ { ACCOUNTING, "accounting" },
+ { SIGNATURE, "signature" },
+ { DOWN_TIME, "down time" },
+#endif /* _NETBSD_SOURCE */
+#endif /* SUPPORT_UTMPX */
+ { -1, "unknown" }
+};
+
+int
+main(int argc, char *argv[])
+{
+ int c, only_current_term, show_labels, quick_mode, default_mode;
+ int et = 0;
+
+ setlocale(LC_ALL, "");
+
+ only_current_term = show_term = show_idle = show_labels = 0;
+ quick_mode = default_mode = 0;
+
+ while ((c = getopt(argc, argv, "abdHlmpqrsTtuv")) != -1) {
+ switch (c) {
+ case 'a':
+ et = -1;
+ show_idle = show_details = 1;
+ break;
+ case 'b':
+ et |= (1 << BOOT_TIME);
+ break;
+ case 'd':
+ et |= (1 << DEAD_PROCESS);
+ break;
+ case 'H':
+ show_labels = 1;
+ break;
+ case 'l':
+ et |= (1 << LOGIN_PROCESS);
+ break;
+ case 'm':
+ only_current_term = 1;
+ break;
+ case 'p':
+ et |= (1 << INIT_PROCESS);
+ break;
+ case 'q':
+ quick_mode = 1;
+ break;
+ case 'r':
+ et |= (1 << RUN_LVL);
+ break;
+ case 's':
+ default_mode = 1;
+ break;
+ case 'T':
+ show_term = 1;
+ break;
+ case 't':
+ et |= (1 << NEW_TIME);
+ break;
+ case 'u':
+ show_idle = 1;
+ break;
+ case 'v':
+ show_details = 1;
+ break;
+ default:
+ usage();
+ /* NOTREACHED */
+ }
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (et != 0)
+ etype = et;
+
+ if (chdir("/dev")) {
+ err(EXIT_FAILURE, "cannot change directory to /dev");
+ /* NOTREACHED */
+ }
+
+ if (default_mode)
+ only_current_term = show_term = show_idle = 0;
+
+ switch (argc) {
+ case 0: /* who */
+ if (quick_mode) {
+ quick(NULL);
+ } else if (only_current_term) {
+ who_am_i(NULL, show_labels);
+ } else {
+ process(NULL, show_labels);
+ }
+ break;
+ case 1: /* who utmp_file */
+ if (quick_mode) {
+ quick(*argv);
+ } else if (only_current_term) {
+ who_am_i(*argv, show_labels);
+ } else {
+ process(*argv, show_labels);
+ }
+ break;
+ case 2: /* who am i */
+ who_am_i(NULL, show_labels);
+ break;
+ default:
+ usage();
+ /* NOTREACHED */
+ }
+
+ return 0;
+}
+
+static char *
+strrstr(const char *str, const char *pat)
+{
+ const char *estr;
+ size_t len;
+ if (*pat == '\0')
+ return __UNCONST(str);
+
+ len = strlen(pat);
+
+ for (estr = str + strlen(str); str < estr; estr--)
+ if (strncmp(estr, pat, len) == 0)
+ return __UNCONST(estr);
+ return NULL;
+}
+
+static void
+who_am_i(const char *fname, int show_labels)
+{
+ struct passwd *pw;
+ const char *p;
+ char *t;
+ time_t now;
+ struct utmpentry *ehead, *ep;
+
+ /* search through the utmp and find an entry for this tty */
+ if ((p = ttyname(STDIN_FILENO)) != NULL) {
+
+ /* strip directory prefixes for ttys */
+ if ((t = strrstr(p, "/pts/")) != NULL ||
+ (t = strrchr(p, '/')) != NULL)
+ p = t + 1;
+
+ (void)getutentries(fname, &ehead);
+ for (ep = ehead; ep; ep = ep->next)
+ if (strcmp(ep->line, p) == 0) {
+ if (show_labels)
+ output_labels();
+ eprint(ep);
+ return;
+ }
+ } else
+ p = "tty??";
+
+ (void)time(&now);
+ pw = getpwuid(getuid());
+ if (show_labels)
+ output_labels();
+ print(pw ? pw->pw_name : "?", p, now, "", getpid(), 0, 0, 0, 0);
+}
+
+static void
+process(const char *fname, int show_labels)
+{
+ struct utmpentry *ehead, *ep;
+ (void)getutentries(fname, &ehead);
+ if (show_labels)
+ output_labels();
+ for (ep = ehead; ep != NULL; ep = ep->next)
+ eprint(ep);
+}
+
+static void
+eprint(const struct utmpentry *ep)
+{
+ print(ep->name, ep->line, (time_t)ep->tv.tv_sec, ep->host, ep->pid,
+ ep->term, ep->exit, ep->sess, ep->type);
+}
+
+static void
+print(const char *name, const char *line, time_t t, const char *host,
+ pid_t pid, uint16_t term, uint16_t xit, uint16_t sess, uint16_t type)
+{
+ struct stat sb;
+ char state;
+ static time_t now = 0;
+ time_t idle;
+ const char *types = NULL;
+ size_t i;
+
+ state = '?';
+ idle = 0;
+
+ for (i = 0; ut_type_names[i].type >= 0; i++) {
+ types = ut_type_names[i].name;
+ if (ut_type_names[i].type == type)
+ break;
+ }
+
+ if (show_term || show_idle) {
+ if (now == 0)
+ time(&now);
+
+ if (stat(line, &sb) == 0) {
+ state = (sb.st_mode & 020) ? '+' : '-';
+ idle = now - sb.st_atime;
+ }
+
+ }
+
+ (void)printf("%-*.*s ", maxname, maxname, name);
+
+ if (show_term)
+ (void)printf("%c ", state);
+
+ (void)printf("%-*.*s ", maxline, maxline, line);
+ (void)printf("%.12s ", ctime(&t) + 4);
+
+ if (show_idle) {
+ if (idle < 60)
+ (void)printf(" . ");
+ else if (idle < (24 * 60 * 60))
+ (void)printf("%02ld:%02ld ",
+ (long)(idle / (60 * 60)),
+ (long)(idle % (60 * 60)) / 60);
+ else
+ (void)printf(" old ");
+
+ (void)printf("\t%6d", pid);
+
+ if (show_details) {
+ if (type == RUN_LVL)
+ (void)printf("\tnew=%c old=%c", term, xit);
+ else
+ (void)printf("\tterm=%d exit=%d", term, xit);
+ (void)printf(" sess=%d", sess);
+ (void)printf(" type=%s ", types);
+ }
+ }
+
+ if (*host)
+ (void)printf("\t(%.*s)", maxhost, host);
+ (void)putchar('\n');
+}
+
+static void
+output_labels(void)
+{
+ (void)printf("%-*.*s ", maxname, maxname, "USER");
+
+ if (show_term)
+ (void)printf("S ");
+
+ (void)printf("%-*.*s ", maxline, maxline, "LINE");
+ (void)printf("WHEN ");
+
+ if (show_idle) {
+ (void)printf("IDLE ");
+ (void)printf("\t PID");
+
+ (void)printf("\tCOMMENT");
+ }
+
+ (void)putchar('\n');
+}
+
+static void
+quick(const char *fname)
+{
+ struct utmpentry *ehead, *ep;
+ int num = 0;
+
+ (void)getutentries(fname, &ehead);
+ for (ep = ehead; ep != NULL; ep = ep->next) {
+ (void)printf("%-*s ", maxname, ep->name);
+ if ((++num % 8) == 0)
+ (void)putchar('\n');
+ }
+ if (num % 8)
+ (void)putchar('\n');
+
+ (void)printf("# users = %d\n", num);
+}
+
+static void
+usage(void)
+{
+ (void)fprintf(stderr, "Usage: %s [-abdHlmqrsTtuv] [file]\n\t%s am i\n",
+ getprogname(), getprogname());
+ exit(EXIT_FAILURE);
+}