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freebsd-skq/bin/ps/keyword.c
mjg ec92f2e61c Return real parent pid in kinfo (used by e.g. ps) 
Add a separate field which exports tracer pid and add a new keyword
("tracer") for ps to display it.

This is a follow up to r270444.

Reviewed by:	kib
MFC after:	1 week
Relnotes:	yes
2014-08-28 08:41:11 +00:00

313 lines
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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[] = "@(#)keyword.c 8.5 (Berkeley) 4/2/94";
#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/sysctl.h>
#include <sys/user.h>
#include <err.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ps.h"
static VAR *findvar(char *, int, char **header);
static int vcmp(const void *, const void *);
/* Compute offset in common structures. */
#define KOFF(x) offsetof(struct kinfo_proc, x)
#define ROFF(x) offsetof(struct rusage, x)
#define LWPFMT "d"
#define NLWPFMT "d"
#define UIDFMT "u"
#define PIDFMT "d"
/* PLEASE KEEP THE TABLE BELOW SORTED ALPHABETICALLY!!! */
static VAR var[] = {
{"%cpu", "%CPU", NULL, 0, pcpu, 0, CHAR, NULL, 0},
{"%mem", "%MEM", NULL, 0, pmem, 0, CHAR, NULL, 0},
{"acflag", "ACFLG", NULL, 0, kvar, KOFF(ki_acflag), USHORT, "x", 0},
{"acflg", "", "acflag", 0, NULL, 0, CHAR, NULL, 0},
{"args", "COMMAND", NULL, COMM|LJUST|USER, arguments, 0,
CHAR, NULL, 0},
{"blocked", "", "sigmask", 0, NULL, 0, CHAR, NULL, 0},
{"caught", "", "sigcatch", 0, NULL, 0, CHAR, NULL, 0},
{"class", "CLASS", NULL, LJUST, loginclass, 0, CHAR, NULL, 0},
{"comm", "COMMAND", NULL, LJUST, ucomm, 0, CHAR, NULL, 0},
{"command", "COMMAND", NULL, COMM|LJUST|USER, command, 0,
CHAR, NULL, 0},
{"cow", "COW", NULL, 0, kvar, KOFF(ki_cow), UINT, "u", 0},
{"cpu", "CPU", NULL, 0, kvar, KOFF(ki_estcpu), UINT, "d", 0},
{"cputime", "", "time", 0, NULL, 0, CHAR, NULL, 0},
{"dsiz", "DSIZ", NULL, 0, kvar, KOFF(ki_dsize), PGTOK, "ld", 0},
{"egid", "", "gid", 0, NULL, 0, CHAR, NULL, 0},
{"egroup", "", "group", 0, NULL, 0, CHAR, NULL, 0},
{"emul", "EMUL", NULL, LJUST, emulname, 0, CHAR, NULL, 0},
{"etime", "ELAPSED", NULL, USER, elapsed, 0, CHAR, NULL, 0},
{"etimes", "ELAPSED", NULL, USER, elapseds, 0, CHAR, NULL, 0},
{"euid", "", "uid", 0, NULL, 0, CHAR, NULL, 0},
{"f", "F", NULL, 0, kvar, KOFF(ki_flag), INT, "x", 0},
{"f2", "F2", NULL, 0, kvar, KOFF(ki_flag2), INT, "08x", 0},
{"fib", "FIB", NULL, 0, kvar, KOFF(ki_fibnum), INT, "d", 0},
{"flags", "", "f", 0, NULL, 0, CHAR, NULL, 0},
{"flags2", "", "f2", 0, NULL, 0, CHAR, NULL, 0},
{"gid", "GID", NULL, 0, kvar, KOFF(ki_groups), UINT, UIDFMT, 0},
{"group", "GROUP", NULL, LJUST, egroupname, 0, CHAR, NULL, 0},
{"ignored", "", "sigignore", 0, NULL, 0, CHAR, NULL, 0},
{"inblk", "INBLK", NULL, USER, rvar, ROFF(ru_inblock), LONG, "ld", 0},
{"inblock", "", "inblk", 0, NULL, 0, CHAR, NULL, 0},
{"jid", "JID", NULL, 0, kvar, KOFF(ki_jid), INT, "d", 0},
{"jobc", "JOBC", NULL, 0, kvar, KOFF(ki_jobc), SHORT, "d", 0},
{"ktrace", "KTRACE", NULL, 0, kvar, KOFF(ki_traceflag), INT, "x", 0},
{"label", "LABEL", NULL, LJUST, label, 0, CHAR, NULL, 0},
{"lim", "LIM", NULL, 0, maxrss, 0, CHAR, NULL, 0},
{"lockname", "LOCK", NULL, LJUST, lockname, 0, CHAR, NULL, 0},
{"login", "LOGIN", NULL, LJUST, logname, 0, CHAR, NULL, 0},
{"logname", "", "login", 0, NULL, 0, CHAR, NULL, 0},
{"lstart", "STARTED", NULL, LJUST|USER, lstarted, 0, CHAR, NULL, 0},
{"lwp", "LWP", NULL, 0, kvar, KOFF(ki_tid), UINT, LWPFMT, 0},
{"majflt", "MAJFLT", NULL, USER, rvar, ROFF(ru_majflt), LONG, "ld", 0},
{"minflt", "MINFLT", NULL, USER, rvar, ROFF(ru_minflt), LONG, "ld", 0},
{"msgrcv", "MSGRCV", NULL, USER, rvar, ROFF(ru_msgrcv), LONG, "ld", 0},
{"msgsnd", "MSGSND", NULL, USER, rvar, ROFF(ru_msgsnd), LONG, "ld", 0},
{"mwchan", "MWCHAN", NULL, LJUST, mwchan, 0, CHAR, NULL, 0},
{"ni", "", "nice", 0, NULL, 0, CHAR, NULL, 0},
{"nice", "NI", NULL, 0, kvar, KOFF(ki_nice), CHAR, "d", 0},
{"nivcsw", "NIVCSW", NULL, USER, rvar, ROFF(ru_nivcsw), LONG, "ld", 0},
{"nlwp", "NLWP", NULL, 0, kvar, KOFF(ki_numthreads), UINT, NLWPFMT, 0},
{"nsignals", "", "nsigs", 0, NULL, 0, CHAR, NULL, 0},
{"nsigs", "NSIGS", NULL, USER, rvar, ROFF(ru_nsignals), LONG, "ld", 0},
{"nswap", "NSWAP", NULL, USER, rvar, ROFF(ru_nswap), LONG, "ld", 0},
{"nvcsw", "NVCSW", NULL, USER, rvar, ROFF(ru_nvcsw), LONG, "ld", 0},
{"nwchan", "NWCHAN", NULL, LJUST, nwchan, 0, CHAR, NULL, 0},
{"oublk", "OUBLK", NULL, USER, rvar, ROFF(ru_oublock), LONG, "ld", 0},
{"oublock", "", "oublk", 0, NULL, 0, CHAR, NULL, 0},
{"paddr", "PADDR", NULL, 0, kvar, KOFF(ki_paddr), KPTR, "lx", 0},
{"pagein", "PAGEIN", NULL, USER, pagein, 0, CHAR, NULL, 0},
{"pcpu", "", "%cpu", 0, NULL, 0, CHAR, NULL, 0},
{"pending", "", "sig", 0, NULL, 0, CHAR, NULL, 0},
{"pgid", "PGID", NULL, 0, kvar, KOFF(ki_pgid), UINT, PIDFMT, 0},
{"pid", "PID", NULL, 0, kvar, KOFF(ki_pid), UINT, PIDFMT, 0},
{"pmem", "", "%mem", 0, NULL, 0, CHAR, NULL, 0},
{"ppid", "PPID", NULL, 0, kvar, KOFF(ki_ppid), UINT, PIDFMT, 0},
{"pri", "PRI", NULL, 0, pri, 0, CHAR, NULL, 0},
{"re", "RE", NULL, INF127, kvar, KOFF(ki_swtime), UINT, "d", 0},
{"rgid", "RGID", NULL, 0, kvar, KOFF(ki_rgid), UINT, UIDFMT, 0},
{"rgroup", "RGROUP", NULL, LJUST, rgroupname, 0, CHAR, NULL, 0},
{"rss", "RSS", NULL, 0, kvar, KOFF(ki_rssize), PGTOK, "ld", 0},
{"rtprio", "RTPRIO", NULL, 0, priorityr, KOFF(ki_pri), CHAR, NULL, 0},
{"ruid", "RUID", NULL, 0, kvar, KOFF(ki_ruid), UINT, UIDFMT, 0},
{"ruser", "RUSER", NULL, LJUST, runame, 0, CHAR, NULL, 0},
{"sid", "SID", NULL, 0, kvar, KOFF(ki_sid), UINT, PIDFMT, 0},
{"sig", "PENDING", NULL, 0, kvar, KOFF(ki_siglist), INT, "x", 0},
{"sigcatch", "CAUGHT", NULL, 0, kvar, KOFF(ki_sigcatch), UINT, "x", 0},
{"sigignore", "IGNORED", NULL, 0, kvar, KOFF(ki_sigignore),
UINT, "x", 0},
{"sigmask", "BLOCKED", NULL, 0, kvar, KOFF(ki_sigmask), UINT, "x", 0},
{"sl", "SL", NULL, INF127, kvar, KOFF(ki_slptime), UINT, "d", 0},
{"ssiz", "SSIZ", NULL, 0, kvar, KOFF(ki_ssize), PGTOK, "ld", 0},
{"start", "STARTED", NULL, LJUST|USER, started, 0, CHAR, NULL, 0},
{"stat", "", "state", 0, NULL, 0, CHAR, NULL, 0},
{"state", "STAT", NULL, LJUST, state, 0, CHAR, NULL, 0},
{"svgid", "SVGID", NULL, 0, kvar, KOFF(ki_svgid), UINT, UIDFMT, 0},
{"svuid", "SVUID", NULL, 0, kvar, KOFF(ki_svuid), UINT, UIDFMT, 0},
{"systime", "SYSTIME", NULL, USER, systime, 0, CHAR, NULL, 0},
{"tdaddr", "TDADDR", NULL, 0, kvar, KOFF(ki_tdaddr), KPTR, "lx", 0},
{"tdev", "TDEV", NULL, 0, tdev, 0, CHAR, NULL, 0},
{"tdnam", "TDNAM", NULL, LJUST, tdnam, 0, CHAR, NULL, 0},
{"time", "TIME", NULL, USER, cputime, 0, CHAR, NULL, 0},
{"tpgid", "TPGID", NULL, 0, kvar, KOFF(ki_tpgid), UINT, PIDFMT, 0},
{"tracer", "TRACER", NULL, 0, kvar, KOFF(ki_tracer), UINT, PIDFMT, 0},
{"tsid", "TSID", NULL, 0, kvar, KOFF(ki_tsid), UINT, PIDFMT, 0},
{"tsiz", "TSIZ", NULL, 0, kvar, KOFF(ki_tsize), PGTOK, "ld", 0},
{"tt", "TT ", NULL, 0, tname, 0, CHAR, NULL, 0},
{"tty", "TTY", NULL, LJUST, longtname, 0, CHAR, NULL, 0},
{"ucomm", "UCOMM", NULL, LJUST, ucomm, 0, CHAR, NULL, 0},
{"uid", "UID", NULL, 0, kvar, KOFF(ki_uid), UINT, UIDFMT, 0},
{"upr", "UPR", NULL, 0, upr, 0, CHAR, NULL, 0},
{"uprocp", "UPROCP", NULL, 0, kvar, KOFF(ki_paddr), KPTR, "lx", 0},
{"user", "USER", NULL, LJUST, uname, 0, CHAR, NULL, 0},
{"usertime", "USERTIME", NULL, USER, usertime, 0, CHAR, NULL, 0},
{"usrpri", "", "upr", 0, NULL, 0, CHAR, NULL, 0},
{"vsize", "", "vsz", 0, NULL, 0, CHAR, NULL, 0},
{"vsz", "VSZ", NULL, 0, vsize, 0, CHAR, NULL, 0},
{"wchan", "WCHAN", NULL, LJUST, wchan, 0, CHAR, NULL, 0},
{"xstat", "XSTAT", NULL, 0, kvar, KOFF(ki_xstat), USHORT, "x", 0},
{"", NULL, NULL, 0, NULL, 0, CHAR, NULL, 0},
};
void
showkey(void)
{
VAR *v;
int i;
const char *p, *sep;
i = 0;
sep = "";
for (v = var; *(p = v->name); ++v) {
int len = strlen(p);
if (termwidth && (i += len + 1) > termwidth) {
i = len;
sep = "\n";
}
(void) printf("%s%s", sep, p);
sep = " ";
}
(void) printf("\n");
}
void
parsefmt(const char *p, int user)
{
char *tempstr, *tempstr1;
#define FMTSEP " \t,\n"
tempstr1 = tempstr = strdup(p);
while (tempstr && *tempstr) {
char *cp, *hp;
VAR *v;
struct varent *vent;
/*
* If an item contains an equals sign, it specifies a column
* header, may contain embedded separator characters and
* is always the last item.
*/
if (tempstr[strcspn(tempstr, "="FMTSEP)] != '=')
while ((cp = strsep(&tempstr, FMTSEP)) != NULL &&
*cp == '\0')
/* void */;
else {
cp = tempstr;
tempstr = NULL;
}
if (cp == NULL || !(v = findvar(cp, user, &hp)))
continue;
if (!user) {
/*
* If the user is NOT adding this field manually,
* get on with our lives if this VAR is already
* represented in the list.
*/
vent = find_varentry(v);
if (vent != NULL)
continue;
}
if ((vent = malloc(sizeof(struct varent))) == NULL)
errx(1, "malloc failed");
vent->header = v->header;
if (hp) {
hp = strdup(hp);
if (hp)
vent->header = hp;
}
vent->var = malloc(sizeof(*vent->var));
if (vent->var == NULL)
errx(1, "malloc failed");
memcpy(vent->var, v, sizeof(*vent->var));
STAILQ_INSERT_TAIL(&varlist, vent, next_ve);
}
free(tempstr1);
if (STAILQ_EMPTY(&varlist)) {
warnx("no valid keywords; valid keywords:");
showkey();
exit(1);
}
}
static VAR *
findvar(char *p, int user, char **header)
{
size_t rflen;
VAR *v, key;
char *hp, *realfmt;
hp = strchr(p, '=');
if (hp)
*hp++ = '\0';
key.name = p;
v = bsearch(&key, var, sizeof(var)/sizeof(VAR) - 1, sizeof(VAR), vcmp);
if (v && v->alias) {
/*
* If the user specified an alternate-header for this
* (aliased) format-name, then we need to copy that
* alternate-header when making the recursive call to
* process the alias.
*/
if (hp == NULL)
parsefmt(v->alias, user);
else {
/*
* XXX - This processing will not be correct for
* any alias which expands into a list of format
* keywords. Presently there are no aliases
* which do that.
*/
rflen = strlen(v->alias) + strlen(hp) + 2;
realfmt = malloc(rflen);
if (realfmt == NULL)
errx(1, "malloc failed");
snprintf(realfmt, rflen, "%s=%s", v->alias, hp);
parsefmt(realfmt, user);
free(realfmt);
}
return ((VAR *)NULL);
}
if (!v) {
warnx("%s: keyword not found", p);
eval = 1;
}
if (header)
*header = hp;
return (v);
}
static int
vcmp(const void *a, const void *b)
{
return (strcmp(((const VAR *)a)->name, ((const VAR *)b)->name));
}
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