2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1990, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * ------+---------+---------+-------- + --------+---------+---------+---------*
31 * Copyright (c) 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>.
32 * All rights reserved.
34 * Significant modifications made to bring `ps' options somewhat closer
35 * to the standard for `ps' as described in SingleUnixSpec-v3.
36 * ------+---------+---------+-------- + --------+---------+---------+---------*
40 static const char copyright[] =
41 "@(#) Copyright (c) 1990, 1993, 1994\n\
42 The Regents of the University of California. All rights reserved.\n";
47 static char sccsid[] = "@(#)ps.c 8.4 (Berkeley) 4/2/94";
51 #include <sys/cdefs.h>
52 __FBSDID("$FreeBSD$");
54 #include <sys/param.h>
59 #include <sys/ioctl.h>
60 #include <sys/sysctl.h>
61 #include <sys/mount.h>
82 #define _PATH_PTS "/dev/pts/"
84 #define W_SEP " \t" /* "Whitespace" list separators */
85 #define T_SEP "," /* "Terminate-element" list separators */
89 #define OPT_LAZY_f "f"
91 #define DEF_UREAD 1 /* Always do the more-expensive read. */
92 #define OPT_LAZY_f /* I.e., the `-f' option is not added. */
96 * isdigit takes an `int', but expects values in the range of unsigned char.
97 * This wrapper ensures that values from a 'char' end up in the correct range.
99 #define isdigitch(Anychar) isdigit((u_char)(Anychar))
102 int eval; /* Exit value */
103 time_t now; /* Current time(3) value */
105 int sumrusage; /* -S */
106 int termwidth; /* Width of the screen (0 == infinity). */
107 int showthreads; /* will threads be shown? */
109 struct velisthead varlist = STAILQ_HEAD_INITIALIZER(varlist);
111 static int forceuread = DEF_UREAD; /* Do extra work to get u-area. */
113 static int needcomm; /* -o "command" */
114 static int needenv; /* -e */
115 static int needuser; /* -o "user" */
116 static int optfatal; /* Fatal error parsing some list-option. */
117 static int pid_max; /* kern.max_pid */
119 static enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT;
122 typedef int addelem_rtn(struct listinfo *_inf, const char *_elem);
128 addelem_rtn *addelem;
140 static int addelem_gid(struct listinfo *, const char *);
141 static int addelem_jid(struct listinfo *, const char *);
142 static int addelem_pid(struct listinfo *, const char *);
143 static int addelem_tty(struct listinfo *, const char *);
144 static int addelem_uid(struct listinfo *, const char *);
145 static void add_list(struct listinfo *, const char *);
146 static void descendant_sort(KINFO *, int);
147 static void format_output(KINFO *);
148 static void *expand_list(struct listinfo *);
150 fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int),
151 KINFO *, char *, char *, int);
152 static void free_list(struct listinfo *);
153 static void init_list(struct listinfo *, addelem_rtn, int, const char *);
154 static char *kludge_oldps_options(const char *, char *, const char *);
155 static int pscomp(const void *, const void *);
156 static void saveuser(KINFO *);
157 static void scanvars(void);
158 static void sizevars(void);
159 static void pidmax_init(void);
160 static void usage(void);
162 static char dfmt[] = "pid,tt,state,time,command";
163 static char jfmt[] = "user,pid,ppid,pgid,sid,jobc,state,tt,time,command";
164 static char lfmt[] = "uid,pid,ppid,cpu,pri,nice,vsz,rss,mwchan,state,"
166 static char o1[] = "pid";
167 static char o2[] = "tt,state,time,command";
168 static char ufmt[] = "user,pid,%cpu,%mem,vsz,rss,tt,state,start,time,command";
169 static char vfmt[] = "pid,state,time,sl,re,pagein,vsz,rss,lim,tsiz,"
171 static char Zfmt[] = "label";
173 #define PS_ARGS "AaCcde" OPT_LAZY_f "G:gHhjJ:LlM:mN:O:o:p:rSTt:U:uvwXxZ"
176 main(int argc, char *argv[])
178 struct listinfo gidlist, jidlist, pgrplist, pidlist;
179 struct listinfo ruidlist, sesslist, ttylist, uidlist;
180 struct kinfo_proc *kp;
181 KINFO *kinfo = NULL, *next_KINFO;
184 struct winsize ws = { .ws_row = 0 };
185 const char *nlistf, *memf, *str;
187 int all, ch, elem, flag, _fmt, i, lineno, linelen, left;
188 int descendancy, nentries, nkept, nselectors;
189 int prtheader, wflag, what, xkeep, xkeep_implied;
190 int fwidthmin, fwidthmax;
191 char errbuf[_POSIX2_LINE_MAX];
192 char fmtbuf[_POSIX2_LINE_MAX];
194 (void) setlocale(LC_ALL, "");
196 time(&now); /* Used by routines in print.c. */
199 * Compute default output line length before processing options.
200 * If COLUMNS is set, use it. Otherwise, if this is part of an
201 * interactive job (i.e. one associated with a terminal), use
202 * the terminal width. "Interactive" is determined by whether
203 * any of stdout, stderr, or stdin is a terminal. The intent
204 * is that "ps", "ps | more", and "ps | grep" all use the same
205 * default line length unless -w is specified.
207 * If not interactive, the default length was traditionally 79.
208 * It has been changed to unlimited. This is mostly for the
209 * benefit of non-interactive scripts, which arguably should
210 * use -ww, but is compatible with Linux.
212 if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0')
213 termwidth = atoi(cols);
214 else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
215 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
216 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) ||
218 termwidth = UNLIMITED;
220 termwidth = ws.ws_col - 1;
223 * Hide a number of option-processing kludges in a separate routine,
224 * to support some historical BSD behaviors, such as `ps axu'.
227 argv[1] = kludge_oldps_options(PS_ARGS, argv[1], argv[2]);
231 all = descendancy = _fmt = nselectors = optfatal = 0;
232 prtheader = showthreads = wflag = xkeep_implied = 0;
233 xkeep = -1; /* Neither -x nor -X. */
234 init_list(&gidlist, addelem_gid, sizeof(gid_t), "group");
235 init_list(&jidlist, addelem_jid, sizeof(int), "jail id");
236 init_list(&pgrplist, addelem_pid, sizeof(pid_t), "process group");
237 init_list(&pidlist, addelem_pid, sizeof(pid_t), "process id");
238 init_list(&ruidlist, addelem_uid, sizeof(uid_t), "ruser");
239 init_list(&sesslist, addelem_pid, sizeof(pid_t), "session id");
240 init_list(&ttylist, addelem_tty, sizeof(dev_t), "tty");
241 init_list(&uidlist, addelem_uid, sizeof(uid_t), "user");
242 memf = _PATH_DEVNULL;
245 argc = xo_parse_args(argc, argv);
249 while ((ch = getopt(argc, argv, PS_ARGS)) != -1)
253 * Exactly the same as `-ax'. This has been
254 * added for compatibility with SUSv3, but for
255 * now it will not be described in the man page.
273 case 'e': /* XXX set ufmt */
278 if (getuid() == 0 || getgid() == 0)
283 add_list(&gidlist, optarg);
290 * XXX - This SUSv3 behavior is still under debate
291 * since it conflicts with the (undocumented)
292 * `-g' option. So we skip it for now.
294 add_list(&pgrplist, optarg);
299 /* The historical BSD-ish (from SunOS) behavior. */
303 showthreads = KERN_PROC_INC_THREAD;
306 prtheader = ws.ws_row > 5 ? ws.ws_row : 22;
309 add_list(&jidlist, optarg);
339 o1[0] = o2[0] = '\0';
347 add_list(&pidlist, optarg);
349 * Note: `-p' does not *set* xkeep, but any values
350 * from pidlist are checked before xkeep is. That
351 * way they are always matched, even if the user
359 * XXX - This un-standard option is still under
360 * debate. This is what SUSv3 defines as
361 * the `-U' option, and while it would be
362 * nice to have, it could cause even more
363 * confusion to implement it as `-R'.
365 add_list(&ruidlist, optarg);
379 * XXX - This non-standard option is still under
380 * debate. This *is* supported on Solaris,
381 * Linux, and IRIX, but conflicts with `-s'
382 * on NetBSD and maybe some older BSD's.
384 add_list(&sesslist, optarg);
390 if ((optarg = ttyname(STDIN_FILENO)) == NULL)
391 xo_errx(1, "stdin: not a terminal");
394 add_list(&ttylist, optarg);
399 /* This is what SUSv3 defines as the `-u' option. */
400 add_list(&uidlist, optarg);
418 termwidth = UNLIMITED;
419 else if (termwidth < 131 && termwidth != UNLIMITED)
425 * Note that `-X' and `-x' are not standard "selector"
426 * options. For most selector-options, we check *all*
427 * processes to see if any are matched by the given
428 * value(s). After we have a set of all the matched
429 * processes, then `-X' and `-x' govern whether we
430 * modify that *matched* set for processes which do
431 * not have a controlling terminal. `-X' causes
432 * those processes to be deleted from the matched
433 * set, while `-x' causes them to be kept.
452 * If there arguments after processing all the options, attempt
453 * to treat them as a list of process ids.
456 if (!isdigitch(**argv))
458 add_list(&pidlist, *argv);
462 xo_warnx("illegal argument: %s\n", *argv);
466 exit(1); /* Error messages already printed. */
467 if (xkeep < 0) /* Neither -X nor -x was specified. */
468 xkeep = xkeep_implied;
470 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
472 xo_errx(1, "%s", errbuf);
477 if (nselectors == 0) {
478 uidlist.l.ptr = malloc(sizeof(uid_t));
479 if (uidlist.l.ptr == NULL)
480 xo_errx(1, "malloc failed");
482 uidlist.count = uidlist.maxcount = 1;
483 *uidlist.l.uids = getuid();
487 * scan requested variables, noting what structures are needed,
488 * and adjusting header widths as appropriate.
493 * Get process list. If the user requested just one selector-
494 * option, then kvm_getprocs can be asked to return just those
495 * processes. Otherwise, have it return all processes, and
496 * then this routine will search that full list and select the
497 * processes which match any of the user's selector-options.
499 what = showthreads != 0 ? KERN_PROC_ALL : KERN_PROC_PROC;
501 if (nselectors == 1) {
502 if (gidlist.count == 1) {
503 what = KERN_PROC_RGID | showthreads;
504 flag = *gidlist.l.gids;
506 } else if (pgrplist.count == 1) {
507 what = KERN_PROC_PGRP | showthreads;
508 flag = *pgrplist.l.pids;
510 } else if (pidlist.count == 1 && !descendancy) {
511 what = KERN_PROC_PID | showthreads;
512 flag = *pidlist.l.pids;
514 } else if (ruidlist.count == 1) {
515 what = KERN_PROC_RUID | showthreads;
516 flag = *ruidlist.l.uids;
518 } else if (sesslist.count == 1) {
519 what = KERN_PROC_SESSION | showthreads;
520 flag = *sesslist.l.pids;
522 } else if (ttylist.count == 1) {
523 what = KERN_PROC_TTY | showthreads;
524 flag = *ttylist.l.ttys;
526 } else if (uidlist.count == 1) {
527 what = KERN_PROC_UID | showthreads;
528 flag = *uidlist.l.uids;
531 /* No need for this routine to select processes. */
540 kp = kvm_getprocs(kd, what, flag, &nentries);
542 * Ignore ESRCH to preserve behaviour of "ps -p nonexistent-pid"
543 * not reporting an error.
545 if ((kp == NULL && errno != ESRCH) || (kp != NULL && nentries < 0))
546 xo_errx(1, "%s", kvm_geterr(kd));
549 for (elem = 0; elem < pidlist.count; elem++)
550 for (i = 0; i < nentries; i++)
551 if (kp[i].ki_ppid == pidlist.l.pids[elem]) {
552 if (pidlist.count >= pidlist.maxcount)
553 expand_list(&pidlist);
554 pidlist.l.pids[pidlist.count++] = kp[i].ki_pid;
557 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL)
558 xo_errx(1, "malloc failed");
559 for (i = nentries; --i >= 0; ++kp) {
561 * If the user specified multiple selection-criteria,
562 * then keep any process matched by the inclusive OR
563 * of all the selection-criteria given.
565 if (pidlist.count > 0) {
566 for (elem = 0; elem < pidlist.count; elem++)
567 if (kp->ki_pid == pidlist.l.pids[elem])
571 * Note that we had to process pidlist before
572 * filtering out processes which do not have
573 * a controlling terminal.
576 if ((kp->ki_tdev == NODEV ||
577 (kp->ki_flag & P_CONTROLT) == 0))
582 if (gidlist.count > 0) {
583 for (elem = 0; elem < gidlist.count; elem++)
584 if (kp->ki_rgid == gidlist.l.gids[elem])
587 if (jidlist.count > 0) {
588 for (elem = 0; elem < jidlist.count; elem++)
589 if (kp->ki_jid == jidlist.l.jids[elem])
592 if (pgrplist.count > 0) {
593 for (elem = 0; elem < pgrplist.count; elem++)
595 pgrplist.l.pids[elem])
598 if (ruidlist.count > 0) {
599 for (elem = 0; elem < ruidlist.count; elem++)
601 ruidlist.l.uids[elem])
604 if (sesslist.count > 0) {
605 for (elem = 0; elem < sesslist.count; elem++)
606 if (kp->ki_sid == sesslist.l.pids[elem])
609 if (ttylist.count > 0) {
610 for (elem = 0; elem < ttylist.count; elem++)
611 if (kp->ki_tdev == ttylist.l.ttys[elem])
614 if (uidlist.count > 0) {
615 for (elem = 0; elem < uidlist.count; elem++)
616 if (kp->ki_uid == uidlist.l.uids[elem])
620 * This process did not match any of the user's
621 * selector-options, so skip the process.
626 next_KINFO = &kinfo[nkept];
627 next_KINFO->ki_p = kp;
628 next_KINFO->ki_d.level = 0;
629 next_KINFO->ki_d.prefix = NULL;
630 next_KINFO->ki_pcpu = getpcpu(next_KINFO);
631 if (sortby == SORTMEM)
632 next_KINFO->ki_memsize = kp->ki_tsize +
633 kp->ki_dsize + kp->ki_ssize;
635 saveuser(next_KINFO);
651 qsort(kinfo, nkept, sizeof(KINFO), pscomp);
654 * We want things in descendant order
657 descendant_sort(kinfo, nkept);
661 * Prepare formatted output.
663 for (i = 0; i < nkept; i++)
664 format_output(&kinfo[i]);
669 xo_open_container("process-information");
671 if (xo_get_style(NULL) != XO_STYLE_TEXT)
672 termwidth = UNLIMITED;
675 * Output formatted lines.
677 xo_open_list("process");
678 for (i = lineno = 0; i < nkept; i++) {
680 xo_open_instance("process");
681 STAILQ_FOREACH(vent, &varlist, next_ve) {
682 ks = STAILQ_FIRST(&kinfo[i].ki_ks);
683 STAILQ_REMOVE_HEAD(&kinfo[i].ki_ks, ks_next);
684 /* Truncate rightmost column if necessary. */
685 fwidthmax = _POSIX2_LINE_MAX;
686 if (STAILQ_NEXT(vent, next_ve) == NULL &&
687 termwidth != UNLIMITED && ks->ks_str != NULL) {
688 left = termwidth - linelen;
689 if (left > 0 && left < (int)strlen(ks->ks_str))
696 /* No padding for the last column, if it's LJUST. */
697 fwidthmin = (xo_get_style(NULL) != XO_STYLE_TEXT ||
698 (STAILQ_NEXT(vent, next_ve) == NULL &&
699 (vent->var->flag & LJUST))) ? 0 : vent->var->width;
700 snprintf(fmtbuf, sizeof(fmtbuf), "{:%s/%%%s%d..%dhs}",
701 vent->var->field ? vent->var->field : vent->var->name,
702 (vent->var->flag & LJUST) ? "-" : "",
703 fwidthmin, fwidthmax);
704 xo_emit(fmtbuf, str);
705 linelen += fwidthmin;
707 if (ks->ks_str != NULL) {
714 if (STAILQ_NEXT(vent, next_ve) != NULL) {
720 xo_close_instance("process");
721 if (prtheader && lineno++ == prtheader - 4) {
727 xo_close_list("process");
728 xo_close_container("process-information");
734 free_list(&pgrplist);
735 free_list(&ruidlist);
736 free_list(&sesslist);
739 for (i = 0; i < nkept; i++)
740 free(kinfo[i].ki_d.prefix);
747 addelem_gid(struct listinfo *inf, const char *elem)
750 const char *nameorID;
754 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
756 xo_warnx("Invalid (zero-length) %s name", inf->lname);
758 xo_warnx("%s name too long: %s", inf->lname, elem);
760 return (0); /* Do not add this value. */
764 * SUSv3 states that `ps -G grouplist' should match "real-group
765 * ID numbers", and does not mention group-names. I do want to
766 * also support group-names, so this tries for a group-id first,
767 * and only tries for a name if that doesn't work. This is the
768 * opposite order of what is done in addelem_uid(), but in
769 * practice the order would only matter for group-names which
775 bigtemp = strtoul(elem, &endp, 10);
776 if (errno == 0 && *endp == '\0' && bigtemp <= GID_MAX) {
777 nameorID = "name or ID matches";
778 grp = getgrgid((gid_t)bigtemp);
781 grp = getgrnam(elem);
783 xo_warnx("No %s %s '%s'", inf->lname, nameorID, elem);
787 if (inf->count >= inf->maxcount)
789 inf->l.gids[(inf->count)++] = grp->gr_gid;
794 addelem_jid(struct listinfo *inf, const char *elem)
799 warnx("Invalid (zero-length) jail id");
801 return (0); /* Do not add this value. */
804 tempid = jail_getid(elem);
806 warnx("Invalid %s: %s", inf->lname, elem);
811 if (inf->count >= inf->maxcount)
813 inf->l.jids[(inf->count)++] = tempid;
818 addelem_pid(struct listinfo *inf, const char *elem)
824 xo_warnx("Invalid (zero-length) process id");
826 return (0); /* Do not add this value. */
830 tempid = strtol(elem, &endp, 10);
831 if (*endp != '\0' || tempid < 0 || elem == endp) {
832 xo_warnx("Invalid %s: %s", inf->lname, elem);
834 } else if (errno != 0 || tempid > pid_max) {
835 xo_warnx("%s too large: %s", inf->lname, elem);
838 if (errno == ERANGE) {
842 if (inf->count >= inf->maxcount)
844 inf->l.pids[(inf->count)++] = tempid;
849 * The user can specify a device via one of three formats:
850 * 1) fully qualified, e.g.: /dev/ttyp0 /dev/console /dev/pts/0
851 * 2) missing "/dev", e.g.: ttyp0 console pts/0
852 * 3) two-letters, e.g.: p0 co 0
853 * (matching letters that would be seen in the "TT" column)
856 addelem_tty(struct listinfo *inf, const char *elem)
860 char pathbuf[PATH_MAX], pathbuf2[PATH_MAX], pathbuf3[PATH_MAX];
870 if (strcmp(elem, "co") == 0) {
871 ttypath = _PATH_CONSOLE;
876 strlcpy(pathbuf, _PATH_DEV, sizeof(pathbuf));
877 strlcat(pathbuf, elem, sizeof(pathbuf));
879 if (strncmp(pathbuf, _PATH_TTY, strlen(_PATH_TTY)) == 0)
881 if (strncmp(pathbuf, _PATH_PTS, strlen(_PATH_PTS)) == 0)
883 if (strcmp(pathbuf, _PATH_CONSOLE) == 0)
885 /* Check to see if /dev/tty${elem} exists */
886 strlcpy(pathbuf2, _PATH_TTY, sizeof(pathbuf2));
887 strlcat(pathbuf2, elem, sizeof(pathbuf2));
888 if (stat(pathbuf2, &sb) == 0 && S_ISCHR(sb.st_mode)) {
889 /* No need to repeat stat() && S_ISCHR() checks */
893 /* Check to see if /dev/pts/${elem} exists */
894 strlcpy(pathbuf3, _PATH_PTS, sizeof(pathbuf3));
895 strlcat(pathbuf3, elem, sizeof(pathbuf3));
896 if (stat(pathbuf3, &sb) == 0 && S_ISCHR(sb.st_mode)) {
897 /* No need to repeat stat() && S_ISCHR() checks */
904 if (stat(ttypath, &sb) == -1) {
905 if (pathbuf3[0] != '\0')
906 xo_warn("%s, %s, and %s", pathbuf3, pathbuf2,
909 xo_warn("%s", ttypath);
913 if (!S_ISCHR(sb.st_mode)) {
914 if (pathbuf3[0] != '\0')
915 xo_warnx("%s, %s, and %s: Not a terminal",
916 pathbuf3, pathbuf2, ttypath);
918 xo_warnx("%s: Not a terminal", ttypath);
923 if (inf->count >= inf->maxcount)
925 inf->l.ttys[(inf->count)++] = sb.st_rdev;
930 addelem_uid(struct listinfo *inf, const char *elem)
936 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
938 xo_warnx("Invalid (zero-length) %s name", inf->lname);
940 xo_warnx("%s name too long: %s", inf->lname, elem);
942 return (0); /* Do not add this value. */
945 pwd = getpwnam(elem);
948 bigtemp = strtoul(elem, &endp, 10);
949 if (errno != 0 || *endp != '\0' || bigtemp > UID_MAX)
950 xo_warnx("No %s named '%s'", inf->lname, elem);
952 /* The string is all digits, so it might be a userID. */
953 pwd = getpwuid((uid_t)bigtemp);
955 xo_warnx("No %s name or ID matches '%s'",
961 * These used to be treated as minor warnings (and the
962 * option was simply ignored), but now they are fatal
963 * errors (and the command will be aborted).
968 if (inf->count >= inf->maxcount)
970 inf->l.uids[(inf->count)++] = pwd->pw_uid;
975 add_list(struct listinfo *inf, const char *argp)
980 char elemcopy[PATH_MAX];
983 inf->addelem(inf, argp);
984 while (*argp != '\0') {
985 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
990 if (strchr(T_SEP, *argp) == NULL) {
991 endp = elemcopy + sizeof(elemcopy) - 1;
992 while (*argp != '\0' && cp <= endp &&
993 strchr(W_SEP T_SEP, *argp) == NULL)
1001 * Add this single element to the given list.
1003 inf->addelem(inf, elemcopy);
1006 * The string is too long to copy. Find the end
1007 * of the string to print out the warning message.
1009 while (*argp != '\0' && strchr(W_SEP T_SEP,
1012 xo_warnx("Value too long: %.*s", (int)(argp - savep),
1017 * Skip over any number of trailing whitespace characters,
1018 * but only one (at most) trailing element-terminating
1021 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
1023 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) {
1025 /* Catch case where string ended with a comma. */
1027 inf->addelem(inf, argp);
1033 descendant_sort(KINFO *ki, int items)
1035 int dst, lvl, maxlvl, n, ndst, nsrc, siblings, src;
1036 unsigned char *path;
1040 * First, sort the entries by descendancy, tracking the descendancy
1041 * depth in the ki_d.level field.
1045 while (src < items) {
1046 if (ki[src].ki_d.level) {
1050 for (nsrc = 1; src + nsrc < items; nsrc++)
1051 if (!ki[src + nsrc].ki_d.level)
1054 for (dst = 0; dst < items; dst++) {
1055 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_pid)
1057 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_ppid)
1066 for (ndst = 1; dst + ndst < items; ndst++)
1067 if (ki[dst + ndst].ki_d.level <= ki[dst].ki_d.level)
1070 for (n = src; n < src + nsrc; n++) {
1071 ki[n].ki_d.level += ki[dst].ki_d.level + 1;
1072 if (maxlvl < ki[n].ki_d.level)
1073 maxlvl = ki[n].ki_d.level;
1079 memmove(ki + src, ki + src + 1,
1080 (dst - src + ndst - 1) * sizeof *ki);
1081 ki[dst + ndst - 1] = kn;
1085 } else if (src != dst + ndst) {
1087 memmove(ki + dst + ndst + 1, ki + dst + ndst,
1088 (src - dst - ndst) * sizeof *ki);
1089 ki[dst + ndst] = kn;
1102 * Now populate ki_d.prefix (instead of ki_d.level) with the command
1103 * prefix used to show descendancies.
1105 path = malloc((maxlvl + 7) / 8);
1106 memset(path, '\0', (maxlvl + 7) / 8);
1107 for (src = 0; src < items; src++) {
1108 if ((lvl = ki[src].ki_d.level) == 0) {
1109 ki[src].ki_d.prefix = NULL;
1112 if ((ki[src].ki_d.prefix = malloc(lvl * 2 + 1)) == NULL)
1113 xo_errx(1, "malloc failed");
1114 for (n = 0; n < lvl - 2; n++) {
1115 ki[src].ki_d.prefix[n * 2] =
1116 path[n / 8] & 1 << (n % 8) ? '|' : ' ';
1117 ki[src].ki_d.prefix[n * 2 + 1] = ' ';
1120 /* Have I any more siblings? */
1121 for (siblings = 0, dst = src + 1; dst < items; dst++) {
1122 if (ki[dst].ki_d.level > lvl)
1124 if (ki[dst].ki_d.level == lvl)
1129 path[n / 8] |= 1 << (n % 8);
1131 path[n / 8] &= ~(1 << (n % 8));
1132 ki[src].ki_d.prefix[n * 2] = siblings ? '|' : '`';
1133 ki[src].ki_d.prefix[n * 2 + 1] = '-';
1136 strcpy(ki[src].ki_d.prefix + n * 2, "- ");
1142 expand_list(struct listinfo *inf)
1147 newmax = (inf->maxcount + 1) << 1;
1148 newlist = realloc(inf->l.ptr, newmax * inf->elemsize);
1149 if (newlist == NULL) {
1151 xo_errx(1, "realloc to %d %ss failed", newmax, inf->lname);
1153 inf->maxcount = newmax;
1154 inf->l.ptr = newlist;
1160 free_list(struct listinfo *inf)
1163 inf->count = inf->elemsize = inf->maxcount = 0;
1164 if (inf->l.ptr != NULL)
1166 inf->addelem = NULL;
1172 init_list(struct listinfo *inf, addelem_rtn artn, int elemsize,
1176 inf->count = inf->maxcount = 0;
1177 inf->elemsize = elemsize;
1178 inf->addelem = artn;
1184 find_varentry(VAR *v)
1186 struct varent *vent;
1188 STAILQ_FOREACH(vent, &varlist, next_ve) {
1189 if (strcmp(vent->var->name, v->name) == 0)
1198 struct varent *vent;
1201 STAILQ_FOREACH(vent, &varlist, next_ve) {
1211 format_output(KINFO *ki)
1213 struct varent *vent;
1219 STAILQ_INIT(&ki->ki_ks);
1220 STAILQ_FOREACH(vent, &varlist, next_ve) {
1222 str = (v->oproc)(ki, vent);
1223 ks = malloc(sizeof(*ks));
1225 xo_errx(1, "malloc failed");
1227 STAILQ_INSERT_TAIL(&ki->ki_ks, ks, ks_next);
1240 struct varent *vent;
1244 STAILQ_FOREACH(vent, &varlist, next_ve) {
1246 i = strlen(vent->header);
1253 fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki,
1254 char *comm, char *thread, int maxlen)
1258 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm,
1259 showthreads && ki->ki_p->ki_numthreads > 1 ? thread : NULL, maxlen);
1263 #define UREADOK(ki) (forceuread || (ki->ki_p->ki_flag & P_INMEM))
1270 if (ki->ki_p->ki_flag & P_INMEM) {
1272 * The u-area might be swapped out, and we can't get
1273 * at it because we have a crashdump and no swap.
1274 * If it's here fill in these fields, otherwise, just
1281 * save arguments if needed
1284 if (ki->ki_p->ki_stat == SZOMB)
1285 ki->ki_args = strdup("<defunct>");
1286 else if (UREADOK(ki) || (ki->ki_p->ki_args != NULL))
1287 ki->ki_args = fmt(kvm_getargv, ki,
1288 ki->ki_p->ki_comm, ki->ki_p->ki_tdname, MAXCOMLEN);
1290 asprintf(&argsp, "(%s)", ki->ki_p->ki_comm);
1291 ki->ki_args = argsp;
1293 if (ki->ki_args == NULL)
1294 xo_errx(1, "malloc failed");
1300 ki->ki_env = fmt(kvm_getenvv, ki,
1301 (char *)NULL, (char *)NULL, 0);
1303 ki->ki_env = strdup("()");
1304 if (ki->ki_env == NULL)
1305 xo_errx(1, "malloc failed");
1311 /* A macro used to improve the readability of pscomp(). */
1312 #define DIFF_RETURN(a, b, field) do { \
1313 if ((a)->field != (b)->field) \
1314 return (((a)->field < (b)->field) ? -1 : 1); \
1318 pscomp(const void *a, const void *b)
1320 const KINFO *ka, *kb;
1324 /* SORTCPU and SORTMEM are sorted in descending order. */
1325 if (sortby == SORTCPU)
1326 DIFF_RETURN(kb, ka, ki_pcpu);
1327 if (sortby == SORTMEM)
1328 DIFF_RETURN(kb, ka, ki_memsize);
1330 * TTY's are sorted in ascending order, except that all NODEV
1331 * processes come before all processes with a device.
1333 if (ka->ki_p->ki_tdev != kb->ki_p->ki_tdev) {
1334 if (ka->ki_p->ki_tdev == NODEV)
1336 if (kb->ki_p->ki_tdev == NODEV)
1338 DIFF_RETURN(ka, kb, ki_p->ki_tdev);
1341 /* PID's and TID's (threads) are sorted in ascending order. */
1342 DIFF_RETURN(ka, kb, ki_p->ki_pid);
1343 DIFF_RETURN(ka, kb, ki_p->ki_tid);
1349 * ICK (all for getopt), would rather hide the ugliness
1350 * here than taint the main code.
1355 * The old convention that 't' with no trailing tty arg means the users
1356 * tty, is only supported if argv[1] doesn't begin with a '-'. This same
1357 * feature is available with the option 'T', which takes no argument.
1360 kludge_oldps_options(const char *optlist, char *origval, const char *nextarg)
1363 char *argp, *cp, *newopts, *ns, *optp, *pidp;
1366 * See if the original value includes any option which takes an
1367 * argument (and will thus use up the remainder of the string).
1370 if (optlist != NULL) {
1371 for (cp = origval; *cp != '\0'; cp++) {
1372 optp = strchr(optlist, *cp);
1373 if ((optp != NULL) && *(optp + 1) == ':') {
1379 if (argp != NULL && *origval == '-')
1383 * if last letter is a 't' flag with no argument (in the context
1384 * of the oldps options -- option string NOT starting with a '-' --
1385 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)).
1387 * However, if a flag accepting a string argument is found earlier
1388 * in the option string (including a possible `t' flag), then the
1389 * remainder of the string must be the argument to that flag; so
1390 * do not modify that argument. Note that a trailing `t' would
1391 * cause argp to be set, if argp was not already set by some
1394 len = strlen(origval);
1395 cp = origval + len - 1;
1397 if (*cp == 't' && *origval != '-' && cp == argp) {
1398 if (nextarg == NULL || *nextarg == '-' || isdigitch(*nextarg))
1400 } else if (argp == NULL) {
1402 * The original value did not include any option which takes
1403 * an argument (and that would include `p' and `t'), so check
1404 * the value for trailing number, or comma-separated list of
1405 * numbers, which we will treat as a pid request.
1407 if (isdigitch(*cp)) {
1408 while (cp >= origval && (*cp == ',' || isdigitch(*cp)))
1415 * If nothing needs to be added to the string, then return
1416 * the "original" (although possibly modified) value.
1418 if (*origval == '-' && pidp == NULL)
1422 * Create a copy of the string to add '-' and/or 'p' to the
1425 if ((newopts = ns = malloc(len + 3)) == NULL)
1426 xo_errx(1, "malloc failed");
1428 if (*origval != '-')
1429 *ns++ = '-'; /* add option flag */
1432 strcpy(ns, origval);
1435 * Copy everything before the pid string, add the `p',
1436 * and then copy the pid string.
1438 len = pidp - origval;
1439 memcpy(ns, origval, len);
1453 intsize = sizeof(pid_max);
1454 if (sysctlbyname("kern.pid_max", &pid_max, &intsize, NULL, 0) < 0) {
1455 xo_warn("unable to read kern.pid_max");
1463 #define SINGLE_OPTS "[-aCcde" OPT_LAZY_f "HhjlmrSTuvwXxZ]"
1465 (void)xo_error("%s\n%s\n%s\n%s\n",
1466 "usage: ps " SINGLE_OPTS " [-O fmt | -o fmt] [-G gid[,gid...]]",
1467 " [-J jid[,jid...]] [-M core] [-N system]",
1468 " [-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]",