#include <sys/cdefs.h>
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1980, 1991, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#ifndef lint
static const char sccsid[] = "@(#)w.c 8.4 (Berkeley) 4/16/94";
#endif
#include <sys/param.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/tty.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <kvm.h>
#include <limits.h>
#include <locale.h>
#include <netdb.h>
#include <nlist.h>
#include <paths.h>
#include <resolv.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <utmp.h>
#include <vis.h>
#include "extern.h"
struct timeval boottime;
struct utmp utmp;
struct winsize ws;
kvm_t *kd;
time_t now;
int ttywidth;
int argwidth;
int header = 1;
int nflag;
int dflag;
int sortidle;
int use_ampm;
int use_comma;
char **sel_users;
struct entry {
struct entry *next;
struct utmp utmp;
dev_t tdev;
time_t idle;
struct kinfo_proc *kp;
char *args;
struct kinfo_proc *dkp;
} *ep, *ehead = NULL, **nextp = &ehead;
#define debugproc(p) *((struct kinfo_proc **)&(p)->ki_spare[0])
#define W_DISPHOSTSIZE 16
static void pr_header(time_t *, int);
static struct stat *ttystat(char *, int);
static void usage(int);
static int this_is_uptime(const char *s);
static void w_getargv(void);
char *fmt_argv(char **, char *, int);
int
main(argc, argv)
int argc;
char **argv;
{
struct kinfo_proc *kp, *kprocbuf;
struct kinfo_proc *dkp;
struct stat *stp;
FILE *ut;
time_t touched;
int ch, i, nentries, nusers, wcmd, longidle, dropgid;
const char *memf, *nlistf, *p;
char *x_suffix;
char buf[MAXHOSTNAMELEN], errbuf[_POSIX2_LINE_MAX];
char fn[MAXHOSTNAMELEN];
char *dot;
int local_error = 0, retry_count = 0;
size_t bufSize = 0;
size_t orig_bufSize = 0;
int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL, 0 };
(void)setlocale(LC_ALL, "");
if (this_is_uptime(argv[0]) == 0) {
wcmd = 0;
p = "";
} else {
wcmd = 1;
p = "dhiflM:N:nsuw";
}
dropgid = 0;
memf = nlistf = NULL;
while ((ch = getopt(argc, argv, p)) != -1)
switch (ch) {
case 'd':
dflag = 1;
break;
case 'h':
header = 0;
break;
case 'i':
sortidle = 1;
break;
case 'M':
header = 0;
memf = optarg;
dropgid = 1;
break;
case 'N':
nlistf = optarg;
dropgid = 1;
break;
case 'n':
nflag = 1;
break;
case 'f': case 'l': case 's': case 'u': case 'w':
warnx("[-flsuw] no longer supported");
case '?':
default:
usage(wcmd);
}
argc -= optind;
argv += optind;
if (!(_res.options & RES_INIT))
res_init();
_res.retrans = 2;
_res.retry = 1;
if (dropgid)
setgid(getgid());
#ifdef OLD_PROC
if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == NULL)
errx(1, "%s", errbuf);
#endif
(void)time(&now);
if ((ut = fopen(_PATH_UTMP, "r")) == NULL)
err(1, "%s", _PATH_UTMP);
if (*argv)
sel_users = argv;
for (nusers = 0; fread(&utmp, sizeof(utmp), 1, ut);) {
if (utmp.ut_name[0] == '\0')
continue;
if (!(stp = ttystat(utmp.ut_line, UT_LINESIZE)))
continue;
++nusers;
if (wcmd == 0)
continue;
if (sel_users) {
int usermatch;
char **user;
usermatch = 0;
for (user = sel_users; !usermatch && *user; user++)
if (!strncmp(utmp.ut_name, *user, UT_NAMESIZE))
usermatch = 1;
if (!usermatch)
continue;
}
if ((ep = calloc(1, sizeof(struct entry))) == NULL)
errx(1, "calloc");
*nextp = ep;
nextp = &ep->next;
memmove(&ep->utmp, &utmp, sizeof(struct utmp));
ep->tdev = stp->st_rdev;
#ifdef CPU_CONSDEV
if (ep->tdev == 0) {
int mib[2];
size_t size;
mib[0] = CTL_MACHDEP;
mib[1] = CPU_CONSDEV;
size = sizeof(dev_t);
(void)sysctl(mib, 2, &ep->tdev, &size, NULL, 0);
}
#endif
touched = stp->st_atime;
if (touched < ep->utmp.ut_time) {
touched = ep->utmp.ut_time;
}
if ((ep->idle = now - touched) < 0)
ep->idle = 0;
}
(void)fclose(ut);
if (header || wcmd == 0) {
pr_header(&now, nusers);
if (wcmd == 0) {
#ifdef OLD_PROC
(void)kvm_close(kd);
#endif
exit(0);
}
#define HEADER_USER "USER"
#define HEADER_TTY "TTY"
#define HEADER_FROM "FROM"
#define HEADER_LOGIN_IDLE "LOGIN@ IDLE "
#define HEADER_WHAT "WHAT\n"
#define WUSED (UT_NAMESIZE + UT_LINESIZE + W_DISPHOSTSIZE + \
sizeof(HEADER_LOGIN_IDLE) + 3)
(void)printf("%-*.*s %-*.*s %-*.*s %s",
UT_NAMESIZE, UT_NAMESIZE, HEADER_USER,
UT_LINESIZE, UT_LINESIZE, HEADER_TTY,
W_DISPHOSTSIZE, W_DISPHOSTSIZE, HEADER_FROM,
HEADER_LOGIN_IDLE HEADER_WHAT);
}
#ifdef OLD_PROC
if ((kp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nentries)) == NULL)
err(1, "%s", kvm_geterr(kd));
#else
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_ALL;
mib[3] = 0;
if (sysctl(mib, 4, NULL, &bufSize, NULL, 0) < 0) {
perror("Failure calling sysctl");
exit(1);
}
kprocbuf = kp = (struct kinfo_proc *)malloc(bufSize);
retry_count = 0;
orig_bufSize = bufSize;
for (retry_count = 0; ; retry_count++) {
local_error = 0;
bufSize = orig_bufSize;
if ((local_error = sysctl(mib, 4, kp, &bufSize, NULL, 0)) < 0) {
if (retry_count < 1000) {
sleep(1);
continue;
}
perror("Failure calling sysctl");
exit(1);
} else if (local_error == 0) {
break;
}
sleep(1);
}
nentries = bufSize / sizeof(struct kinfo_proc);
#endif
for (i = 0; i < nentries; i++, kp++) {
if (kp->kp_proc.p_stat == SIDL || kp->kp_proc.p_stat == SZOMB)
continue;
for (ep = ehead; ep != NULL; ep = ep->next) {
if (ep->tdev == kp->kp_eproc.e_tdev) {
if (ep->kp == NULL && kp->kp_eproc.e_pgid == kp->kp_eproc.e_tpgid) {
if (proc_compare(&ep->kp->kp_proc, &kp->kp_proc))
ep->kp = kp;
}
dkp = ep->dkp;
ep->dkp = kp;
}
}
}
if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 &&
ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 &&
ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) || ws.ws_col == 0)
ttywidth = 79;
else
ttywidth = ws.ws_col - 1;
argwidth = ttywidth - WUSED;
if (argwidth < 4)
argwidth = 8;
for (ep = ehead; ep != NULL; ep = ep->next) {
if (ep->kp == NULL) {
ep->args = strdup("-");
continue;
}
#ifdef OLD_PROC
ep->args = fmt_argv(kvm_getargv(kd, ep->kp, argwidth),
ep->kp->kp_proc.p_comm, MAXCOMLEN);
#else
w_getargv();
#endif
if (ep->args == NULL)
err(1, NULL);
}
if (sortidle && ehead != NULL) {
struct entry *from, *save;
from = ehead;
ehead = NULL;
while (from != NULL) {
for (nextp = &ehead;
(*nextp) && from->idle >= (*nextp)->idle;
nextp = &(*nextp)->next)
continue;
save = from;
from = from->next;
save->next = *nextp;
*nextp = save;
}
}
for (ep = ehead; ep != NULL; ep = ep->next) {
char host_buf[UT_HOSTSIZE + 1];
struct sockaddr_storage ss;
struct sockaddr *sa = (struct sockaddr *)&ss;
struct sockaddr_in *lsin = (struct sockaddr_in *)&ss;
#ifdef SUCKAGE
struct hostent *hp;
#else
struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *)&ss;
#endif
int isaddr;
host_buf[UT_HOSTSIZE] = '\0';
strncpy(host_buf, ep->utmp.ut_host, UT_HOSTSIZE);
p = *host_buf ? host_buf : "-";
if ((x_suffix = strrchr(p, ':')) != NULL) {
if ((dot = strchr(x_suffix, '.')) != NULL &&
strchr(dot+1, '.') == NULL)
*x_suffix++ = '\0';
else
x_suffix = NULL;
}
if (!nflag) {
isaddr = 0;
memset(&ss, '\0', sizeof(ss));
#ifdef SUCKAGE
if (inet_aton(p, &lsin->sin_addr) ) {
lsin->sin_len = sizeof(*lsin);
lsin->sin_family = AF_INET;
isaddr = 1;
}
hp = gethostbyaddr((char *)&lsin->sin_addr, sizeof(lsin->sin_addr), AF_INET);
if( hp ) {
p = hp->h_name;
}
#else
if (inet_pton(AF_INET6, p, &lsin6->sin6_addr) == 1) {
lsin6->sin6_len = sizeof(*lsin6);
lsin6->sin6_family = AF_INET6;
isaddr = 1;
} else if (inet_pton(AF_INET, p, &lsin->sin_addr) == 1) {
lsin->sin_len = sizeof(*lsin);
lsin->sin_family = AF_INET;
isaddr = 1;
}
if (isaddr && realhostname_sa(fn, sizeof(fn), sa,
sa->sa_len) == HOSTNAME_FOUND)
p = fn;
#endif
}
if (x_suffix) {
(void)snprintf(buf, sizeof(buf), "%s:%s", p, x_suffix);
p = buf;
}
#ifndef SUCKAGE
if (dflag) {
for (dkp = ep->dkp; dkp != NULL; dkp = debugproc(dkp)) {
const char *ptr;
ptr = fmt_argv(kvm_getargv(kd, dkp, argwidth),
dkp->ki_comm, MAXCOMLEN);
if (ptr == NULL)
ptr = "-";
(void)printf("\t\t%-9d %s\n",
dkp->ki_pid, ptr);
}
}
#endif
(void)printf("%-*.*s %-*.*s %-*.*s ",
UT_NAMESIZE, UT_NAMESIZE, ep->utmp.ut_name,
UT_LINESIZE, UT_LINESIZE,
strncmp(ep->utmp.ut_line, "tty", 3) &&
strncmp(ep->utmp.ut_line, "cua", 3) ?
ep->utmp.ut_line : ep->utmp.ut_line + 3,
W_DISPHOSTSIZE, W_DISPHOSTSIZE, *p ? p : "-");
pr_attime(&ep->utmp.ut_time, &now);
longidle = pr_idle(ep->idle);
(void)printf("%.*s\n", argwidth - longidle, ep->args);
#ifndef OLD_PROC
free(ep->args);
#endif
}
#ifdef OLD_PROC
(void)kvm_close(kd);
#else
free(kprocbuf);
#endif
exit(0);
}
static void
pr_header(nowp, nusers)
time_t *nowp;
int nusers;
{
double avenrun[3];
time_t uptime;
int days, hrs, i, mins, secs;
int mib[2];
size_t size;
char buf[256];
(void)strftime(buf, sizeof(buf) - 1,
use_ampm ? "%l:%M%p" : "%k:%M", localtime(nowp));
buf[sizeof(buf) - 1] = '\0';
(void)printf("%s ", buf);
mib[0] = CTL_KERN;
mib[1] = KERN_BOOTTIME;
size = sizeof(boottime);
if (sysctl(mib, 2, &boottime, &size, NULL, 0) != -1 &&
boottime.tv_sec != 0) {
uptime = now - boottime.tv_sec;
if (uptime > 60)
uptime += 30;
days = uptime / 86400;
uptime %= 86400;
hrs = uptime / 3600;
uptime %= 3600;
mins = uptime / 60;
secs = uptime % 60;
(void)printf(" up");
if (days > 0)
(void)printf(" %d day%s,", days, days > 1 ? "s" : "");
if (hrs > 0 && mins > 0)
(void)printf(" %2d:%02d,", hrs, mins);
else if (hrs > 0)
(void)printf(" %d hr%s,", hrs, hrs > 1 ? "s" : "");
else if (mins > 0)
(void)printf(" %d min%s,", mins, mins > 1 ? "s" : "");
else
(void)printf(" %d sec%s,", secs, secs > 1 ? "s" : "");
}
(void)printf(" %d user%s", nusers, nusers == 1 ? "" : "s");
if (getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0])) == -1)
(void)printf(", no load average information available\n");
else {
(void)printf(", load averages:");
for (i = 0; i < (int)(sizeof(avenrun) / sizeof(avenrun[0])); i++) {
if (use_comma && i > 0)
(void)printf(",");
(void)printf(" %.2f", avenrun[i]);
}
(void)printf("\n");
}
}
static struct stat *
ttystat(line, sz)
char *line;
int sz;
{
static struct stat sb;
char ttybuf[MAXPATHLEN];
(void)snprintf(ttybuf, sizeof(ttybuf), "%s%.*s", _PATH_DEV, sz, line);
if (stat(ttybuf, &sb)) {
warn("%s", ttybuf);
return (NULL);
}
return (&sb);
}
static void
usage(wcmd)
int wcmd;
{
if (wcmd)
(void)fprintf(stderr,
"usage: w [-dhin] [-M core] [-N system] [user ...]\n");
else
(void)fprintf(stderr, "usage: uptime\n");
exit(1);
}
static int
this_is_uptime(s)
const char *s;
{
const char *u;
if ((u = strrchr(s, '/')) != NULL)
++u;
else
u = s;
if (strcmp(u, "uptime") == 0)
return (0);
return (-1);
}
static void
w_getargv(void)
{
int mib[3], argmax;
size_t size;
char *procargs, *sp, *np, *cp;
mib[0] = CTL_KERN;
mib[1] = KERN_ARGMAX;
size = sizeof(argmax);
if (sysctl(mib, 2, &argmax, &size, NULL, 0) == -1) {
goto ERROR;
}
procargs = malloc(argmax);
if (procargs == NULL) {
goto ERROR;
}
mib[0] = CTL_KERN;
mib[1] = KERN_PROCARGS;
mib[2] = KI_PROC(ep)->p_pid;
size = (size_t)argmax;
if (sysctl(mib, 3, procargs, &size, NULL, 0) == -1) {
goto ERROR_FREE;
}
for (cp = procargs; cp < &procargs[size]; cp++) {
if (*cp == '\0') {
break;
}
}
if (cp == &procargs[size]) {
goto ERROR_FREE;
}
sp = cp;
for (np = NULL; cp < &procargs[size]; cp++) {
if (*cp == '\0') {
if (np != NULL) {
*np = ' ';
}
np = cp;
} else if (*cp == '=') {
break;
}
}
for (np = sp; (np < &procargs[size]) && (*np == ' '); np++);
ep->args = strdup(np);
free(procargs);
return;
ERROR_FREE:
free(procargs);
ERROR:
asprintf(&ep->args, "%s", KI_PROC(ep)->p_comm);
return;
}