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19a29bc737
freebsd-skq/bin/ps/print.c
Julian Elischer 7ab24ea3b9 Introduce a way to make pure kernal threads. 
kthread_add() takes the same parameters as the old kthread_create()
plus a pointer to a process structure, and adds a kernel thread
to that process.

kproc_kthread_add() takes the parameters for kthread_add,
plus a process name and a pointer to a pointer to a process instead of just
a pointer, and if the proc * is NULL, it creates the process to the
specifications required, before adding the thread to it.

All other old kthread_xxx() calls return, but act on (struct thread *)
instead of (struct proc *). One reason to change the name is so that
any old kernel modules that are lying around and expect kthread_create()
to make a process will not just accidentally link.

fix top to show  kernel threads by their thread name in -SH mode
add a tdnam formatting option to ps to show thread names.

make all idle threads actual kthreads and put them into their own idled process.
make all interrupt threads kthreads and put them in an interd process
(mainly for aesthetic and accounting reasons)
rename proc 0 to be 'kernel' and it's swapper thread is now 'swapper'

man page fixes to follow.
2007-10-26 08:00:41 +00:00

843 lines
17 KiB
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/*-
* Copyright (c) 1990, 1993, 1994
* 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.
* 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.
*/
#if 0
#ifndef lint
static char sccsid[] = "@(#)print.c 8.6 (Berkeley) 4/16/94";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/proc.h>
#include <sys/stat.h>
#include <sys/mac.h>
#include <sys/user.h>
#include <sys/sysctl.h>
#include <err.h>
#include <grp.h>
#include <langinfo.h>
#include <locale.h>
#include <math.h>
#include <nlist.h>
#include <pwd.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>
#include "ps.h"
#define ps_pgtok(a) (((a) * getpagesize()) / 1024)
void
printheader(void)
{
VAR *v;
struct varent *vent;
STAILQ_FOREACH(vent, &varlist, next_ve)
if (*vent->header != '\0')
break;
if (!vent)
return;
STAILQ_FOREACH(vent, &varlist, next_ve) {
v = vent->var;
if (v->flag & LJUST) {
if (STAILQ_NEXT(vent, next_ve) == NULL) /* last one */
(void)printf("%s", vent->header);
else
(void)printf("%-*s", v->width, vent->header);
} else
(void)printf("%*s", v->width, vent->header);
if (STAILQ_NEXT(vent, next_ve) != NULL)
(void)putchar(' ');
}
(void)putchar('\n');
}
void
arguments(KINFO *k, VARENT *ve)
{
VAR *v;
int left;
char *cp, *vis_args;
v = ve->var;
if ((vis_args = malloc(strlen(k->ki_args) * 4 + 1)) == NULL)
errx(1, "malloc failed");
strvis(vis_args, k->ki_args, VIS_TAB | VIS_NL | VIS_NOSLASH);
if (STAILQ_NEXT(ve, next_ve) == NULL) {
/* last field */
if (termwidth == UNLIMITED) {
(void)printf("%s", vis_args);
} else {
left = termwidth - (totwidth - v->width);
if (left < 1) /* already wrapped, just use std width */
left = v->width;
for (cp = vis_args; --left >= 0 && *cp != '\0';)
(void)putchar(*cp++);
}
} else {
(void)printf("%-*.*s", v->width, v->width, vis_args);
}
free(vis_args);
}
void
command(KINFO *k, VARENT *ve)
{
VAR *v;
int left;
char *cp, *vis_env, *vis_args;
v = ve->var;
if (cflag) {
/* If it is the last field, then don't pad */
if (STAILQ_NEXT(ve, next_ve) == NULL) {
(void)printf("%s", k->ki_p->ki_comm);
if (showthreads && k->ki_p->ki_numthreads > 1)
printf("/%s", k->ki_p->ki_ocomm);
} else
(void)printf("%-*s", v->width, k->ki_p->ki_comm);
return;
}
if ((vis_args = malloc(strlen(k->ki_args) * 4 + 1)) == NULL)
errx(1, "malloc failed");
strvis(vis_args, k->ki_args, VIS_TAB | VIS_NL | VIS_NOSLASH);
if (k->ki_env) {
if ((vis_env = malloc(strlen(k->ki_env) * 4 + 1)) == NULL)
errx(1, "malloc failed");
strvis(vis_env, k->ki_env, VIS_TAB | VIS_NL | VIS_NOSLASH);
} else
vis_env = NULL;
if (STAILQ_NEXT(ve, next_ve) == NULL) {
/* last field */
if (termwidth == UNLIMITED) {
if (vis_env)
(void)printf("%s ", vis_env);
(void)printf("%s", vis_args);
} else {
left = termwidth - (totwidth - v->width);
if (left < 1) /* already wrapped, just use std width */
left = v->width;
if ((cp = vis_env) != NULL) {
while (--left >= 0 && *cp)
(void)putchar(*cp++);
if (--left >= 0)
putchar(' ');
}
for (cp = vis_args; --left >= 0 && *cp != '\0';)
(void)putchar(*cp++);
}
} else
/* XXX env? */
(void)printf("%-*.*s", v->width, v->width, vis_args);
free(vis_args);
if (vis_env != NULL)
free(vis_env);
}
void
ucomm(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
if (STAILQ_NEXT(ve, next_ve) == NULL) { /* last field, don't pad */
(void)printf("%s", k->ki_p->ki_comm);
if (showthreads && k->ki_p->ki_numthreads > 1)
printf("/%s", k->ki_p->ki_ocomm);
} else
(void)printf("%-*s", v->width, k->ki_p->ki_comm);
}
void
tdnam(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
if (showthreads && k->ki_p->ki_numthreads > 1)
(void)printf("%-*s", v->width, k->ki_p->ki_ocomm);
else
(void)printf("%-*s", v->width, " " );
}
void
logname(KINFO *k, VARENT *ve)
{
VAR *v;
char *s;
v = ve->var;
(void)printf("%-*s", v->width, (s = k->ki_p->ki_login, *s) ? s : "-");
}
void
state(KINFO *k, VARENT *ve)
{
int flag, tdflags;
char *cp;
VAR *v;
char buf[16];
v = ve->var;
flag = k->ki_p->ki_flag;
tdflags = k->ki_p->ki_tdflags; /* XXXKSE */
cp = buf;
switch (k->ki_p->ki_stat) {
case SSTOP:
*cp = 'T';
break;
case SSLEEP:
if (tdflags & TDF_SINTR) /* interruptable (long) */
*cp = k->ki_p->ki_slptime >= MAXSLP ? 'I' : 'S';
else
*cp = 'D';
break;
case SRUN:
case SIDL:
*cp = 'R';
break;
case SWAIT:
*cp = 'W';
break;
case SLOCK:
*cp = 'L';
break;
case SZOMB:
*cp = 'Z';
break;
default:
*cp = '?';
}
cp++;
if (!(flag & P_INMEM))
*cp++ = 'W';
if (k->ki_p->ki_nice < NZERO)
*cp++ = '<';
else if (k->ki_p->ki_nice > NZERO)
*cp++ = 'N';
if (flag & P_TRACED)
*cp++ = 'X';
if (flag & P_WEXIT && k->ki_p->ki_stat != SZOMB)
*cp++ = 'E';
if (flag & P_PPWAIT)
*cp++ = 'V';
if ((flag & P_SYSTEM) || k->ki_p->ki_lock > 0)
*cp++ = 'L';
if (k->ki_p->ki_kiflag & KI_SLEADER)
*cp++ = 's';
if ((flag & P_CONTROLT) && k->ki_p->ki_pgid == k->ki_p->ki_tpgid)
*cp++ = '+';
if (flag & P_JAILED)
*cp++ = 'J';
*cp = '\0';
(void)printf("%-*s", v->width, buf);
}
#define scalepri(x) ((x) - PZERO)
void
pri(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
(void)printf("%*d", v->width, scalepri(k->ki_p->ki_pri.pri_level));
}
void
upr(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
(void)printf("%*d", v->width, scalepri(k->ki_p->ki_pri.pri_user));
}
#undef scalepri
void
uname(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
(void)printf("%-*s", v->width, user_from_uid(k->ki_p->ki_uid, 0));
}
int
s_uname(KINFO *k)
{
return (strlen(user_from_uid(k->ki_p->ki_uid, 0)));
}
void
rgroupname(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
(void)printf("%-*s", v->width, group_from_gid(k->ki_p->ki_rgid, 0));
}
int
s_rgroupname(KINFO *k)
{
return (strlen(group_from_gid(k->ki_p->ki_rgid, 0)));
}
void
runame(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
(void)printf("%-*s", v->width, user_from_uid(k->ki_p->ki_ruid, 0));
}
int
s_runame(KINFO *k)
{
return (strlen(user_from_uid(k->ki_p->ki_ruid, 0)));
}
void
tdev(KINFO *k, VARENT *ve)
{
VAR *v;
dev_t dev;
char buff[16];
v = ve->var;
dev = k->ki_p->ki_tdev;
if (dev == NODEV)
(void)printf("%*s", v->width, "??");
else {
(void)snprintf(buff, sizeof(buff),
"%d/%d", major(dev), minor(dev));
(void)printf("%*s", v->width, buff);
}
}
void
tname(KINFO *k, VARENT *ve)
{
VAR *v;
dev_t dev;
char *ttname;
v = ve->var;
dev = k->ki_p->ki_tdev;
if (dev == NODEV || (ttname = devname(dev, S_IFCHR)) == NULL)
(void)printf("%*s ", v->width - 1, "??");
else {
if (strncmp(ttname, "tty", 3) == 0 ||
strncmp(ttname, "cua", 3) == 0)
ttname += 3;
if (strncmp(ttname, "pts/", 4) == 0)
ttname += 4;
(void)printf("%*.*s%c", v->width - 1, v->width - 1, ttname,
k->ki_p->ki_kiflag & KI_CTTY ? ' ' : '-');
}
}
void
longtname(KINFO *k, VARENT *ve)
{
VAR *v;
dev_t dev;
char *ttname;
v = ve->var;
dev = k->ki_p->ki_tdev;
if (dev == NODEV || (ttname = devname(dev, S_IFCHR)) == NULL)
(void)printf("%-*s", v->width, "??");
else
(void)printf("%-*s", v->width, ttname);
}
void
started(KINFO *k, VARENT *ve)
{
VAR *v;
time_t then;
struct tm *tp;
static int use_ampm = -1;
char buf[100];
v = ve->var;
if (!k->ki_valid) {
(void)printf("%-*s", v->width, "-");
return;
}
if (use_ampm < 0)
use_ampm = (*nl_langinfo(T_FMT_AMPM) != '\0');
then = k->ki_p->ki_start.tv_sec;
tp = localtime(&then);
if (now - k->ki_p->ki_start.tv_sec < 24 * 3600) {
(void)strftime(buf, sizeof(buf),
use_ampm ? "%l:%M%p" : "%k:%M ", tp);
} else if (now - k->ki_p->ki_start.tv_sec < 7 * 86400) {
(void)strftime(buf, sizeof(buf),
use_ampm ? "%a%I%p" : "%a%H ", tp);
} else
(void)strftime(buf, sizeof(buf), "%e%b%y", tp);
(void)printf("%-*s", v->width, buf);
}
void
lstarted(KINFO *k, VARENT *ve)
{
VAR *v;
time_t then;
char buf[100];
v = ve->var;
if (!k->ki_valid) {
(void)printf("%-*s", v->width, "-");
return;
}
then = k->ki_p->ki_start.tv_sec;
(void)strftime(buf, sizeof(buf), "%c", localtime(&then));
(void)printf("%-*s", v->width, buf);
}
void
lockname(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
if (k->ki_p->ki_kiflag & KI_LOCKBLOCK) {
if (k->ki_p->ki_lockname[0] != 0)
(void)printf("%-*.*s", v->width, v->width,
k->ki_p->ki_lockname);
else
(void)printf("%-*s", v->width, "???");
} else
(void)printf("%-*s", v->width, "-");
}
void
wchan(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
if (k->ki_p->ki_wchan) {
if (k->ki_p->ki_wmesg[0] != 0)
(void)printf("%-*.*s", v->width, v->width,
k->ki_p->ki_wmesg);
else
(void)printf("%-*lx", v->width,
(long)k->ki_p->ki_wchan);
} else
(void)printf("%-*s", v->width, "-");
}
void
nwchan(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
if (k->ki_p->ki_wchan) {
(void)printf("%0*lx", v->width,
(long)k->ki_p->ki_wchan);
} else
(void)printf("%-*s", v->width, "-");
}
void
mwchan(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
if (k->ki_p->ki_wchan) {
if (k->ki_p->ki_wmesg[0] != 0)
(void)printf("%-*.*s", v->width, v->width,
k->ki_p->ki_wmesg);
else
(void)printf("%-*lx", v->width,
(long)k->ki_p->ki_wchan);
} else if (k->ki_p->ki_kiflag & KI_LOCKBLOCK) {
if (k->ki_p->ki_lockname[0]) {
(void)printf("%-*.*s", v->width, v->width,
k->ki_p->ki_lockname);
} else
(void)printf("%-*s", v->width, "???");
} else
(void)printf("%-*s", v->width, "-");
}
void
vsize(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
(void)printf("%*lu", v->width, (u_long)(k->ki_p->ki_size / 1024));
}
void
cputime(KINFO *k, VARENT *ve)
{
VAR *v;
long secs;
long psecs; /* "parts" of a second. first micro, then centi */
char obuff[128];
static char decimal_point;
if (decimal_point == '\0')
decimal_point = localeconv()->decimal_point[0];
v = ve->var;
if (!k->ki_valid) {
secs = 0;
psecs = 0;
} else {
/*
* This counts time spent handling interrupts. We could
* fix this, but it is not 100% trivial (and interrupt
* time fractions only work on the sparc anyway). XXX
*/
secs = k->ki_p->ki_runtime / 1000000;
psecs = k->ki_p->ki_runtime % 1000000;
if (sumrusage) {
secs += k->ki_p->ki_childtime.tv_sec;
psecs += k->ki_p->ki_childtime.tv_usec;
}
/*
* round and scale to 100's
*/
psecs = (psecs + 5000) / 10000;
secs += psecs / 100;
psecs = psecs % 100;
}
(void)snprintf(obuff, sizeof(obuff), "%3ld:%02ld%c%02ld",
secs / 60, secs % 60, decimal_point, psecs);
(void)printf("%*s", v->width, obuff);
}
void
elapsed(KINFO *k, VARENT *ve)
{
VAR *v;
time_t val;
int days, hours, mins, secs;
char obuff[128];
v = ve->var;
val = now - k->ki_p->ki_start.tv_sec;
days = val / (24 * 60 * 60);
val %= 24 * 60 * 60;
hours = val / (60 * 60);
val %= 60 * 60;
mins = val / 60;
secs = val % 60;
if (days != 0)
(void)snprintf(obuff, sizeof(obuff), "%3d-%02d:%02d:%02d",
days, hours, mins, secs);
else if (hours != 0)
(void)snprintf(obuff, sizeof(obuff), "%02d:%02d:%02d",
hours, mins, secs);
else
(void)snprintf(obuff, sizeof(obuff), "%02d:%02d", mins, secs);
(void)printf("%*s", v->width, obuff);
}
double
getpcpu(const KINFO *k)
{
static int failure;
if (!nlistread)
failure = donlist();
if (failure)
return (0.0);
#define fxtofl(fixpt) ((double)(fixpt) / fscale)
/* XXX - I don't like this */
if (k->ki_p->ki_swtime == 0 || (k->ki_p->ki_flag & P_INMEM) == 0)
return (0.0);
if (rawcpu)
return (100.0 * fxtofl(k->ki_p->ki_pctcpu));
return (100.0 * fxtofl(k->ki_p->ki_pctcpu) /
(1.0 - exp(k->ki_p->ki_swtime * log(fxtofl(ccpu)))));
}
void
pcpu(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
(void)printf("%*.1f", v->width, getpcpu(k));
}
static double
getpmem(KINFO *k)
{
static int failure;
double fracmem;
if (!nlistread)
failure = donlist();
if (failure)
return (0.0);
if ((k->ki_p->ki_flag & P_INMEM) == 0)
return (0.0);
/* XXX want pmap ptpages, segtab, etc. (per architecture) */
/* XXX don't have info about shared */
fracmem = ((float)k->ki_p->ki_rssize) / mempages;
return (100.0 * fracmem);
}
void
pmem(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
(void)printf("%*.1f", v->width, getpmem(k));
}
void
pagein(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
(void)printf("%*ld", v->width,
k->ki_valid ? k->ki_p->ki_rusage.ru_majflt : 0);
}
/* ARGSUSED */
void
maxrss(KINFO *k __unused, VARENT *ve)
{
VAR *v;
v = ve->var;
/* XXX not yet */
(void)printf("%*s", v->width, "-");
}
void
priorityr(KINFO *k, VARENT *ve)
{
VAR *v;
struct priority *lpri;
char str[8];
unsigned class, level;
v = ve->var;
lpri = &k->ki_p->ki_pri;
class = lpri->pri_class;
level = lpri->pri_level;
switch (class) {
case PRI_ITHD:
snprintf(str, sizeof(str), "intr:%u", level);
break;
case PRI_REALTIME:
snprintf(str, sizeof(str), "real:%u", level);
break;
case PRI_TIMESHARE:
strncpy(str, "normal", sizeof(str));
break;
case PRI_IDLE:
snprintf(str, sizeof(str), "idle:%u", level);
break;
default:
snprintf(str, sizeof(str), "%u:%u", class, level);
break;
}
str[sizeof(str) - 1] = '\0';
(void)printf("%*s", v->width, str);
}
/*
* Generic output routines. Print fields from various prototype
* structures.
*/
static void
printval(void *bp, VAR *v)
{
static char ofmt[32] = "%";
const char *fcp;
char *cp;
cp = ofmt + 1;
fcp = v->fmt;
if (v->flag & LJUST)
*cp++ = '-';
*cp++ = '*';
while ((*cp++ = *fcp++));
#define CHKINF127(n) (((n) > 127) && (v->flag & INF127) ? 127 : (n))
switch (v->type) {
case CHAR:
(void)printf(ofmt, v->width, *(char *)bp);
break;
case UCHAR:
(void)printf(ofmt, v->width, *(u_char *)bp);
break;
case SHORT:
(void)printf(ofmt, v->width, *(short *)bp);
break;
case USHORT:
(void)printf(ofmt, v->width, *(u_short *)bp);
break;
case INT:
(void)printf(ofmt, v->width, *(int *)bp);
break;
case UINT:
(void)printf(ofmt, v->width, CHKINF127(*(u_int *)bp));
break;
case LONG:
(void)printf(ofmt, v->width, *(long *)bp);
break;
case ULONG:
(void)printf(ofmt, v->width, *(u_long *)bp);
break;
case KPTR:
(void)printf(ofmt, v->width, *(u_long *)bp);
break;
case PGTOK:
(void)printf(ofmt, v->width, ps_pgtok(*(u_long *)bp));
break;
default:
errx(1, "unknown type %d", v->type);
}
}
void
kvar(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
printval((char *)((char *)k->ki_p + v->off), v);
}
void
rvar(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
if (k->ki_valid)
printval((char *)((char *)(&k->ki_p->ki_rusage) + v->off), v);
else
(void)printf("%*s", v->width, "-");
}
void
emulname(KINFO *k, VARENT *ve)
{
VAR *v;
v = ve->var;
printf("%-*s", v->width, *k->ki_p->ki_emul ? k->ki_p->ki_emul : "-");
}
void
label(KINFO *k, VARENT *ve)
{
char *string;
VAR *v;
mac_t proclabel;
int error;
v = ve->var;
string = NULL;
if (mac_prepare_process_label(&proclabel) == -1) {
warn("mac_prepare_process_label");
goto out;
}
error = mac_get_pid(k->ki_p->ki_pid, proclabel);
if (error == 0) {
if (mac_to_text(proclabel, &string) == -1)
string = NULL;
}
mac_free(proclabel);
out:
if (string != NULL) {
(void)printf("%-*s", v->width, string);
free(string);
} else
(void)printf("%-*s", v->width, " -");
return;
}
int
s_label(KINFO *k)
{
char *string = NULL;
mac_t proclabel;
int error, size = 0;
if (mac_prepare_process_label(&proclabel) == -1) {
warn("mac_prepare_process_label");
return (0);
}
error = mac_get_pid(k->ki_p->ki_pid, proclabel);
if (error == 0 && mac_to_text(proclabel, &string) == 0) {
size = strlen(string);
free(string);
}
mac_free(proclabel);
return (size);
}
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