2 * Copyright (c) 1990, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * ------+---------+---------+-------- + --------+---------+---------+---------*
29 * Copyright (c) 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>.
30 * All rights reserved.
32 * Significant modifications made to bring `ps' options somewhat closer
33 * to the standard for `ps' as described in SingleUnixSpec-v3.
34 * ------+---------+---------+-------- + --------+---------+---------+---------*
38 static const char copyright[] =
39 "@(#) Copyright (c) 1990, 1993, 1994\n\
40 The Regents of the University of California. All rights reserved.\n";
45 static char sccsid[] = "@(#)ps.c 8.4 (Berkeley) 4/2/94";
49 #include <sys/cdefs.h>
50 __FBSDID("$FreeBSD$");
52 #include <sys/param.h>
56 #include <sys/ioctl.h>
57 #include <sys/sysctl.h>
58 #include <sys/mount.h>
77 #define _PATH_PTS "/dev/pts/"
79 #define W_SEP " \t" /* "Whitespace" list separators */
80 #define T_SEP "," /* "Terminate-element" list separators */
84 #define OPT_LAZY_f "f"
86 #define DEF_UREAD 1 /* Always do the more-expensive read. */
87 #define OPT_LAZY_f /* I.e., the `-f' option is not added. */
91 * isdigit takes an `int', but expects values in the range of unsigned char.
92 * This wrapper ensures that values from a 'char' end up in the correct range.
94 #define isdigitch(Anychar) isdigit((u_char)(Anychar))
97 int eval; /* Exit value */
98 time_t now; /* Current time(3) value */
100 int sumrusage; /* -S */
101 int termwidth; /* Width of the screen (0 == infinity). */
102 int showthreads; /* will threads be shown? */
104 struct velisthead varlist = STAILQ_HEAD_INITIALIZER(varlist);
106 static int forceuread = DEF_UREAD; /* Do extra work to get u-area. */
108 static int needcomm; /* -o "command" */
109 static int needenv; /* -e */
110 static int needuser; /* -o "user" */
111 static int optfatal; /* Fatal error parsing some list-option. */
112 static int pid_max; /* kern.max_pid */
114 static enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT;
117 typedef int addelem_rtn(struct listinfo *_inf, const char *_elem);
123 addelem_rtn *addelem;
134 static int addelem_gid(struct listinfo *, const char *);
135 static int addelem_pid(struct listinfo *, const char *);
136 static int addelem_tty(struct listinfo *, const char *);
137 static int addelem_uid(struct listinfo *, const char *);
138 static void add_list(struct listinfo *, const char *);
139 static void descendant_sort(KINFO *, int);
140 static void format_output(KINFO *);
141 static void *expand_list(struct listinfo *);
143 fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int),
144 KINFO *, char *, char *, int);
145 static void free_list(struct listinfo *);
146 static void init_list(struct listinfo *, addelem_rtn, int, const char *);
147 static char *kludge_oldps_options(const char *, char *, const char *);
148 static int pscomp(const void *, const void *);
149 static void saveuser(KINFO *);
150 static void scanvars(void);
151 static void sizevars(void);
152 static void pidmax_init(void);
153 static void usage(void);
155 static char dfmt[] = "pid,tt,state,time,command";
156 static char jfmt[] = "user,pid,ppid,pgid,sid,jobc,state,tt,time,command";
157 static char lfmt[] = "uid,pid,ppid,cpu,pri,nice,vsz,rss,mwchan,state,"
159 static char o1[] = "pid";
160 static char o2[] = "tt,state,time,command";
161 static char ufmt[] = "user,pid,%cpu,%mem,vsz,rss,tt,state,start,time,command";
162 static char vfmt[] = "pid,state,time,sl,re,pagein,vsz,rss,lim,tsiz,"
164 static char Zfmt[] = "label";
166 #define PS_ARGS "AaCcde" OPT_LAZY_f "G:gHhjLlM:mN:O:o:p:rSTt:U:uvwXxZ"
169 main(int argc, char *argv[])
171 struct listinfo gidlist, pgrplist, pidlist;
172 struct listinfo ruidlist, sesslist, ttylist, uidlist;
173 struct kinfo_proc *kp;
174 KINFO *kinfo = NULL, *next_KINFO;
178 const char *nlistf, *memf, *fmtstr, *str;
180 int all, ch, elem, flag, _fmt, i, lineno, linelen, left;
181 int descendancy, nentries, nkept, nselectors;
182 int prtheader, wflag, what, xkeep, xkeep_implied;
183 char errbuf[_POSIX2_LINE_MAX];
185 (void) setlocale(LC_ALL, "");
186 time(&now); /* Used by routines in print.c. */
188 if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0')
189 termwidth = atoi(cols);
190 else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
191 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
192 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) ||
196 termwidth = ws.ws_col - 1;
199 * Hide a number of option-processing kludges in a separate routine,
200 * to support some historical BSD behaviors, such as `ps axu'.
203 argv[1] = kludge_oldps_options(PS_ARGS, argv[1], argv[2]);
207 all = descendancy = _fmt = nselectors = optfatal = 0;
208 prtheader = showthreads = wflag = xkeep_implied = 0;
209 xkeep = -1; /* Neither -x nor -X. */
210 init_list(&gidlist, addelem_gid, sizeof(gid_t), "group");
211 init_list(&pgrplist, addelem_pid, sizeof(pid_t), "process group");
212 init_list(&pidlist, addelem_pid, sizeof(pid_t), "process id");
213 init_list(&ruidlist, addelem_uid, sizeof(uid_t), "ruser");
214 init_list(&sesslist, addelem_pid, sizeof(pid_t), "session id");
215 init_list(&ttylist, addelem_tty, sizeof(dev_t), "tty");
216 init_list(&uidlist, addelem_uid, sizeof(uid_t), "user");
217 memf = _PATH_DEVNULL;
219 while ((ch = getopt(argc, argv, PS_ARGS)) != -1)
223 * Exactly the same as `-ax'. This has been
224 * added for compatibility with SUSv3, but for
225 * now it will not be described in the man page.
243 case 'e': /* XXX set ufmt */
248 if (getuid() == 0 || getgid() == 0)
253 add_list(&gidlist, optarg);
260 * XXX - This SUSv3 behavior is still under debate
261 * since it conflicts with the (undocumented)
262 * `-g' option. So we skip it for now.
264 add_list(&pgrplist, optarg);
269 /* The historical BSD-ish (from SunOS) behavior. */
273 showthreads = KERN_PROC_INC_THREAD;
276 prtheader = ws.ws_row > 5 ? ws.ws_row : 22;
304 o1[0] = o2[0] = '\0';
312 add_list(&pidlist, optarg);
314 * Note: `-p' does not *set* xkeep, but any values
315 * from pidlist are checked before xkeep is. That
316 * way they are always matched, even if the user
324 * XXX - This un-standard option is still under
325 * debate. This is what SUSv3 defines as
326 * the `-U' option, and while it would be
327 * nice to have, it could cause even more
328 * confusion to implement it as `-R'.
330 add_list(&ruidlist, optarg);
344 * XXX - This non-standard option is still under
345 * debate. This *is* supported on Solaris,
346 * Linux, and IRIX, but conflicts with `-s'
347 * on NetBSD and maybe some older BSD's.
349 add_list(&sesslist, optarg);
355 if ((optarg = ttyname(STDIN_FILENO)) == NULL)
356 errx(1, "stdin: not a terminal");
359 add_list(&ttylist, optarg);
364 /* This is what SUSv3 defines as the `-u' option. */
365 add_list(&uidlist, optarg);
383 termwidth = UNLIMITED;
384 else if (termwidth < 131)
390 * Note that `-X' and `-x' are not standard "selector"
391 * options. For most selector-options, we check *all*
392 * processes to see if any are matched by the given
393 * value(s). After we have a set of all the matched
394 * processes, then `-X' and `-x' govern whether we
395 * modify that *matched* set for processes which do
396 * not have a controlling terminal. `-X' causes
397 * those processes to be deleted from the matched
398 * set, while `-x' causes them to be kept.
417 * If there arguments after processing all the options, attempt
418 * to treat them as a list of process ids.
421 if (!isdigitch(**argv))
423 add_list(&pidlist, *argv);
427 fprintf(stderr, "%s: illegal argument: %s\n",
428 getprogname(), *argv);
432 exit(1); /* Error messages already printed. */
433 if (xkeep < 0) /* Neither -X nor -x was specified. */
434 xkeep = xkeep_implied;
436 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
438 errx(1, "%s", errbuf);
443 if (nselectors == 0) {
444 uidlist.l.ptr = malloc(sizeof(uid_t));
445 if (uidlist.l.ptr == NULL)
446 errx(1, "malloc failed");
448 uidlist.count = uidlist.maxcount = 1;
449 *uidlist.l.uids = getuid();
453 * scan requested variables, noting what structures are needed,
454 * and adjusting header widths as appropriate.
459 * Get process list. If the user requested just one selector-
460 * option, then kvm_getprocs can be asked to return just those
461 * processes. Otherwise, have it return all processes, and
462 * then this routine will search that full list and select the
463 * processes which match any of the user's selector-options.
465 what = showthreads != 0 ? KERN_PROC_ALL : KERN_PROC_PROC;
467 if (nselectors == 1) {
468 if (gidlist.count == 1) {
469 what = KERN_PROC_RGID | showthreads;
470 flag = *gidlist.l.gids;
472 } else if (pgrplist.count == 1) {
473 what = KERN_PROC_PGRP | showthreads;
474 flag = *pgrplist.l.pids;
476 } else if (pidlist.count == 1) {
477 what = KERN_PROC_PID | showthreads;
478 flag = *pidlist.l.pids;
480 } else if (ruidlist.count == 1) {
481 what = KERN_PROC_RUID | showthreads;
482 flag = *ruidlist.l.uids;
484 } else if (sesslist.count == 1) {
485 what = KERN_PROC_SESSION | showthreads;
486 flag = *sesslist.l.pids;
488 } else if (ttylist.count == 1) {
489 what = KERN_PROC_TTY | showthreads;
490 flag = *ttylist.l.ttys;
492 } else if (uidlist.count == 1) {
493 what = KERN_PROC_UID | showthreads;
494 flag = *uidlist.l.uids;
497 /* No need for this routine to select processes. */
506 kp = kvm_getprocs(kd, what, flag, &nentries);
507 if ((kp == NULL && nentries > 0) || (kp != NULL && nentries < 0))
508 errx(1, "%s", kvm_geterr(kd));
511 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL)
512 errx(1, "malloc failed");
513 for (i = nentries; --i >= 0; ++kp) {
515 * If the user specified multiple selection-criteria,
516 * then keep any process matched by the inclusive OR
517 * of all the selection-criteria given.
519 if (pidlist.count > 0) {
520 for (elem = 0; elem < pidlist.count; elem++)
521 if (kp->ki_pid == pidlist.l.pids[elem])
525 * Note that we had to process pidlist before
526 * filtering out processes which do not have
527 * a controlling terminal.
530 if ((kp->ki_tdev == NODEV ||
531 (kp->ki_flag & P_CONTROLT) == 0))
536 if (gidlist.count > 0) {
537 for (elem = 0; elem < gidlist.count; elem++)
538 if (kp->ki_rgid == gidlist.l.gids[elem])
541 if (pgrplist.count > 0) {
542 for (elem = 0; elem < pgrplist.count; elem++)
544 pgrplist.l.pids[elem])
547 if (ruidlist.count > 0) {
548 for (elem = 0; elem < ruidlist.count; elem++)
550 ruidlist.l.uids[elem])
553 if (sesslist.count > 0) {
554 for (elem = 0; elem < sesslist.count; elem++)
555 if (kp->ki_sid == sesslist.l.pids[elem])
558 if (ttylist.count > 0) {
559 for (elem = 0; elem < ttylist.count; elem++)
560 if (kp->ki_tdev == ttylist.l.ttys[elem])
563 if (uidlist.count > 0) {
564 for (elem = 0; elem < uidlist.count; elem++)
565 if (kp->ki_uid == uidlist.l.uids[elem])
569 * This process did not match any of the user's
570 * selector-options, so skip the process.
575 next_KINFO = &kinfo[nkept];
576 next_KINFO->ki_p = kp;
577 next_KINFO->ki_d.level = 0;
578 next_KINFO->ki_d.prefix = NULL;
579 next_KINFO->ki_pcpu = getpcpu(next_KINFO);
580 if (sortby == SORTMEM)
581 next_KINFO->ki_memsize = kp->ki_tsize +
582 kp->ki_dsize + kp->ki_ssize;
584 saveuser(next_KINFO);
599 qsort(kinfo, nkept, sizeof(KINFO), pscomp);
602 * We want things in descendant order
605 descendant_sort(kinfo, nkept);
609 * Prepare formatted output.
611 for (i = 0; i < nkept; i++)
612 format_output(&kinfo[i]);
620 * Output formatted lines.
622 for (i = lineno = 0; i < nkept; i++) {
624 STAILQ_FOREACH(vent, &varlist, next_ve) {
625 if (vent->var->flag & LJUST)
630 ks = STAILQ_FIRST(&kinfo[i].ki_ks);
631 STAILQ_REMOVE_HEAD(&kinfo[i].ki_ks, ks_next);
632 /* Truncate rightmost column if necessary. */
633 if (STAILQ_NEXT(vent, next_ve) == NULL &&
634 termwidth != UNLIMITED && ks->ks_str != NULL) {
635 left = termwidth - linelen;
636 if (left > 0 && left < (int)strlen(ks->ks_str))
637 ks->ks_str[left] = '\0';
642 /* No padding for the last column, if it's LJUST. */
643 if (STAILQ_NEXT(vent, next_ve) == NULL &&
644 vent->var->flag & LJUST)
645 linelen += printf(fmtstr, 0, str);
647 linelen += printf(fmtstr, vent->var->width, str);
649 if (ks->ks_str != NULL) {
656 if (STAILQ_NEXT(vent, next_ve) != NULL) {
662 if (prtheader && lineno++ == prtheader - 4) {
670 free_list(&pgrplist);
671 free_list(&ruidlist);
672 free_list(&sesslist);
675 for (i = 0; i < nkept; i++)
676 free(kinfo[i].ki_d.prefix);
683 addelem_gid(struct listinfo *inf, const char *elem)
686 const char *nameorID;
690 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
692 warnx("Invalid (zero-length) %s name", inf->lname);
694 warnx("%s name too long: %s", inf->lname, elem);
696 return (0); /* Do not add this value. */
700 * SUSv3 states that `ps -G grouplist' should match "real-group
701 * ID numbers", and does not mention group-names. I do want to
702 * also support group-names, so this tries for a group-id first,
703 * and only tries for a name if that doesn't work. This is the
704 * opposite order of what is done in addelem_uid(), but in
705 * practice the order would only matter for group-names which
711 bigtemp = strtoul(elem, &endp, 10);
712 if (errno == 0 && *endp == '\0' && bigtemp <= GID_MAX) {
713 nameorID = "name or ID matches";
714 grp = getgrgid((gid_t)bigtemp);
717 grp = getgrnam(elem);
719 warnx("No %s %s '%s'", inf->lname, nameorID, elem);
723 if (inf->count >= inf->maxcount)
725 inf->l.gids[(inf->count)++] = grp->gr_gid;
730 addelem_pid(struct listinfo *inf, const char *elem)
736 warnx("Invalid (zero-length) process id");
738 return (0); /* Do not add this value. */
742 tempid = strtol(elem, &endp, 10);
743 if (*endp != '\0' || tempid < 0 || elem == endp) {
744 warnx("Invalid %s: %s", inf->lname, elem);
746 } else if (errno != 0 || tempid > pid_max) {
747 warnx("%s too large: %s", inf->lname, elem);
750 if (errno == ERANGE) {
754 if (inf->count >= inf->maxcount)
756 inf->l.pids[(inf->count)++] = tempid;
761 * The user can specify a device via one of three formats:
762 * 1) fully qualified, e.g.: /dev/ttyp0 /dev/console /dev/pts/0
763 * 2) missing "/dev", e.g.: ttyp0 console pts/0
764 * 3) two-letters, e.g.: p0 co 0
765 * (matching letters that would be seen in the "TT" column)
768 addelem_tty(struct listinfo *inf, const char *elem)
772 char pathbuf[PATH_MAX], pathbuf2[PATH_MAX], pathbuf3[PATH_MAX];
782 if (strcmp(elem, "co") == 0) {
783 ttypath = _PATH_CONSOLE;
788 strlcpy(pathbuf, _PATH_DEV, sizeof(pathbuf));
789 strlcat(pathbuf, elem, sizeof(pathbuf));
791 if (strncmp(pathbuf, _PATH_TTY, strlen(_PATH_TTY)) == 0)
793 if (strncmp(pathbuf, _PATH_PTS, strlen(_PATH_PTS)) == 0)
795 if (strcmp(pathbuf, _PATH_CONSOLE) == 0)
797 /* Check to see if /dev/tty${elem} exists */
798 strlcpy(pathbuf2, _PATH_TTY, sizeof(pathbuf2));
799 strlcat(pathbuf2, elem, sizeof(pathbuf2));
800 if (stat(pathbuf2, &sb) == 0 && S_ISCHR(sb.st_mode)) {
801 /* No need to repeat stat() && S_ISCHR() checks */
805 /* Check to see if /dev/pts/${elem} exists */
806 strlcpy(pathbuf3, _PATH_PTS, sizeof(pathbuf3));
807 strlcat(pathbuf3, elem, sizeof(pathbuf3));
808 if (stat(pathbuf3, &sb) == 0 && S_ISCHR(sb.st_mode)) {
809 /* No need to repeat stat() && S_ISCHR() checks */
816 if (stat(ttypath, &sb) == -1) {
817 if (pathbuf3[0] != '\0')
818 warn("%s, %s, and %s", pathbuf3, pathbuf2,
825 if (!S_ISCHR(sb.st_mode)) {
826 if (pathbuf3[0] != '\0')
827 warnx("%s, %s, and %s: Not a terminal",
828 pathbuf3, pathbuf2, ttypath);
830 warnx("%s: Not a terminal", ttypath);
835 if (inf->count >= inf->maxcount)
837 inf->l.ttys[(inf->count)++] = sb.st_rdev;
842 addelem_uid(struct listinfo *inf, const char *elem)
848 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
850 warnx("Invalid (zero-length) %s name", inf->lname);
852 warnx("%s name too long: %s", inf->lname, elem);
854 return (0); /* Do not add this value. */
857 pwd = getpwnam(elem);
860 bigtemp = strtoul(elem, &endp, 10);
861 if (errno != 0 || *endp != '\0' || bigtemp > UID_MAX)
862 warnx("No %s named '%s'", inf->lname, elem);
864 /* The string is all digits, so it might be a userID. */
865 pwd = getpwuid((uid_t)bigtemp);
867 warnx("No %s name or ID matches '%s'",
873 * These used to be treated as minor warnings (and the
874 * option was simply ignored), but now they are fatal
875 * errors (and the command will be aborted).
880 if (inf->count >= inf->maxcount)
882 inf->l.uids[(inf->count)++] = pwd->pw_uid;
887 add_list(struct listinfo *inf, const char *argp)
892 char elemcopy[PATH_MAX];
895 inf->addelem(inf, argp);
896 while (*argp != '\0') {
897 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
902 if (strchr(T_SEP, *argp) == NULL) {
903 endp = elemcopy + sizeof(elemcopy) - 1;
904 while (*argp != '\0' && cp <= endp &&
905 strchr(W_SEP T_SEP, *argp) == NULL)
913 * Add this single element to the given list.
915 inf->addelem(inf, elemcopy);
918 * The string is too long to copy. Find the end
919 * of the string to print out the warning message.
921 while (*argp != '\0' && strchr(W_SEP T_SEP,
924 warnx("Value too long: %.*s", (int)(argp - savep),
929 * Skip over any number of trailing whitespace characters,
930 * but only one (at most) trailing element-terminating
933 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
935 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) {
937 /* Catch case where string ended with a comma. */
939 inf->addelem(inf, argp);
945 descendant_sort(KINFO *ki, int items)
947 int dst, lvl, maxlvl, n, ndst, nsrc, siblings, src;
952 * First, sort the entries by descendancy, tracking the descendancy
953 * depth in the ki_d.level field.
957 while (src < items) {
958 if (ki[src].ki_d.level) {
962 for (nsrc = 1; src + nsrc < items; nsrc++)
963 if (!ki[src + nsrc].ki_d.level)
966 for (dst = 0; dst < items; dst++) {
967 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_pid)
969 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_ppid)
978 for (ndst = 1; dst + ndst < items; ndst++)
979 if (ki[dst + ndst].ki_d.level <= ki[dst].ki_d.level)
982 for (n = src; n < src + nsrc; n++) {
983 ki[n].ki_d.level += ki[dst].ki_d.level + 1;
984 if (maxlvl < ki[n].ki_d.level)
985 maxlvl = ki[n].ki_d.level;
991 memmove(ki + src, ki + src + 1,
992 (dst - src + ndst - 1) * sizeof *ki);
993 ki[dst + ndst - 1] = kn;
997 } else if (src != dst + ndst) {
999 memmove(ki + dst + ndst + 1, ki + dst + ndst,
1000 (src - dst - ndst) * sizeof *ki);
1001 ki[dst + ndst] = kn;
1014 * Now populate ki_d.prefix (instead of ki_d.level) with the command
1015 * prefix used to show descendancies.
1017 path = malloc((maxlvl + 7) / 8);
1018 memset(path, '\0', (maxlvl + 7) / 8);
1019 for (src = 0; src < items; src++) {
1020 if ((lvl = ki[src].ki_d.level) == 0) {
1021 ki[src].ki_d.prefix = NULL;
1024 if ((ki[src].ki_d.prefix = malloc(lvl * 2 + 1)) == NULL)
1025 errx(1, "malloc failed");
1026 for (n = 0; n < lvl - 2; n++) {
1027 ki[src].ki_d.prefix[n * 2] =
1028 path[n / 8] & 1 << (n % 8) ? '|' : ' ';
1029 ki[src].ki_d.prefix[n * 2 + 1] = ' ';
1032 /* Have I any more siblings? */
1033 for (siblings = 0, dst = src + 1; dst < items; dst++) {
1034 if (ki[dst].ki_d.level > lvl)
1036 if (ki[dst].ki_d.level == lvl)
1041 path[n / 8] |= 1 << (n % 8);
1043 path[n / 8] &= ~(1 << (n % 8));
1044 ki[src].ki_d.prefix[n * 2] = siblings ? '|' : '`';
1045 ki[src].ki_d.prefix[n * 2 + 1] = '-';
1048 strcpy(ki[src].ki_d.prefix + n * 2, "- ");
1054 expand_list(struct listinfo *inf)
1059 newmax = (inf->maxcount + 1) << 1;
1060 newlist = realloc(inf->l.ptr, newmax * inf->elemsize);
1061 if (newlist == NULL) {
1063 errx(1, "realloc to %d %ss failed", newmax, inf->lname);
1065 inf->maxcount = newmax;
1066 inf->l.ptr = newlist;
1072 free_list(struct listinfo *inf)
1075 inf->count = inf->elemsize = inf->maxcount = 0;
1076 if (inf->l.ptr != NULL)
1078 inf->addelem = NULL;
1084 init_list(struct listinfo *inf, addelem_rtn artn, int elemsize,
1088 inf->count = inf->maxcount = 0;
1089 inf->elemsize = elemsize;
1090 inf->addelem = artn;
1096 find_varentry(VAR *v)
1098 struct varent *vent;
1100 STAILQ_FOREACH(vent, &varlist, next_ve) {
1101 if (strcmp(vent->var->name, v->name) == 0)
1110 struct varent *vent;
1113 STAILQ_FOREACH(vent, &varlist, next_ve) {
1123 format_output(KINFO *ki)
1125 struct varent *vent;
1131 STAILQ_INIT(&ki->ki_ks);
1132 STAILQ_FOREACH(vent, &varlist, next_ve) {
1134 str = (v->oproc)(ki, vent);
1135 ks = malloc(sizeof(*ks));
1137 errx(1, "malloc failed");
1139 STAILQ_INSERT_TAIL(&ki->ki_ks, ks, ks_next);
1152 struct varent *vent;
1156 STAILQ_FOREACH(vent, &varlist, next_ve) {
1158 i = strlen(vent->header);
1165 fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki,
1166 char *comm, char *thread, int maxlen)
1170 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm,
1171 showthreads && ki->ki_p->ki_numthreads > 1 ? thread : NULL, maxlen);
1175 #define UREADOK(ki) (forceuread || (ki->ki_p->ki_flag & P_INMEM))
1181 if (ki->ki_p->ki_flag & P_INMEM) {
1183 * The u-area might be swapped out, and we can't get
1184 * at it because we have a crashdump and no swap.
1185 * If it's here fill in these fields, otherwise, just
1192 * save arguments if needed
1195 if (ki->ki_p->ki_stat == SZOMB)
1196 ki->ki_args = strdup("<defunct>");
1197 else if (UREADOK(ki) || (ki->ki_p->ki_args != NULL))
1198 ki->ki_args = strdup(fmt(kvm_getargv, ki,
1199 ki->ki_p->ki_comm, ki->ki_p->ki_tdname, MAXCOMLEN));
1201 asprintf(&ki->ki_args, "(%s)", ki->ki_p->ki_comm);
1202 if (ki->ki_args == NULL)
1203 errx(1, "malloc failed");
1209 ki->ki_env = strdup(fmt(kvm_getenvv, ki,
1210 (char *)NULL, (char *)NULL, 0));
1212 ki->ki_env = strdup("()");
1213 if (ki->ki_env == NULL)
1214 errx(1, "malloc failed");
1220 /* A macro used to improve the readability of pscomp(). */
1221 #define DIFF_RETURN(a, b, field) do { \
1222 if ((a)->field != (b)->field) \
1223 return (((a)->field < (b)->field) ? -1 : 1); \
1227 pscomp(const void *a, const void *b)
1229 const KINFO *ka, *kb;
1233 /* SORTCPU and SORTMEM are sorted in descending order. */
1234 if (sortby == SORTCPU)
1235 DIFF_RETURN(kb, ka, ki_pcpu);
1236 if (sortby == SORTMEM)
1237 DIFF_RETURN(kb, ka, ki_memsize);
1239 * TTY's are sorted in ascending order, except that all NODEV
1240 * processes come before all processes with a device.
1242 if (ka->ki_p->ki_tdev != kb->ki_p->ki_tdev) {
1243 if (ka->ki_p->ki_tdev == NODEV)
1245 if (kb->ki_p->ki_tdev == NODEV)
1247 DIFF_RETURN(ka, kb, ki_p->ki_tdev);
1250 /* PID's and TID's (threads) are sorted in ascending order. */
1251 DIFF_RETURN(ka, kb, ki_p->ki_pid);
1252 DIFF_RETURN(ka, kb, ki_p->ki_tid);
1258 * ICK (all for getopt), would rather hide the ugliness
1259 * here than taint the main code.
1264 * The old convention that 't' with no trailing tty arg means the users
1265 * tty, is only supported if argv[1] doesn't begin with a '-'. This same
1266 * feature is available with the option 'T', which takes no argument.
1269 kludge_oldps_options(const char *optlist, char *origval, const char *nextarg)
1272 char *argp, *cp, *newopts, *ns, *optp, *pidp;
1275 * See if the original value includes any option which takes an
1276 * argument (and will thus use up the remainder of the string).
1279 if (optlist != NULL) {
1280 for (cp = origval; *cp != '\0'; cp++) {
1281 optp = strchr(optlist, *cp);
1282 if ((optp != NULL) && *(optp + 1) == ':') {
1288 if (argp != NULL && *origval == '-')
1292 * if last letter is a 't' flag with no argument (in the context
1293 * of the oldps options -- option string NOT starting with a '-' --
1294 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)).
1296 * However, if a flag accepting a string argument is found earlier
1297 * in the option string (including a possible `t' flag), then the
1298 * remainder of the string must be the argument to that flag; so
1299 * do not modify that argument. Note that a trailing `t' would
1300 * cause argp to be set, if argp was not already set by some
1303 len = strlen(origval);
1304 cp = origval + len - 1;
1306 if (*cp == 't' && *origval != '-' && cp == argp) {
1307 if (nextarg == NULL || *nextarg == '-' || isdigitch(*nextarg))
1309 } else if (argp == NULL) {
1311 * The original value did not include any option which takes
1312 * an argument (and that would include `p' and `t'), so check
1313 * the value for trailing number, or comma-separated list of
1314 * numbers, which we will treat as a pid request.
1316 if (isdigitch(*cp)) {
1317 while (cp >= origval && (*cp == ',' || isdigitch(*cp)))
1324 * If nothing needs to be added to the string, then return
1325 * the "original" (although possibly modified) value.
1327 if (*origval == '-' && pidp == NULL)
1331 * Create a copy of the string to add '-' and/or 'p' to the
1334 if ((newopts = ns = malloc(len + 3)) == NULL)
1335 errx(1, "malloc failed");
1337 if (*origval != '-')
1338 *ns++ = '-'; /* add option flag */
1341 strcpy(ns, origval);
1344 * Copy everything before the pid string, add the `p',
1345 * and then copy the pid string.
1347 len = pidp - origval;
1348 memcpy(ns, origval, len);
1362 intsize = sizeof(pid_max);
1363 if (sysctlbyname("kern.pid_max", &pid_max, &intsize, NULL, 0) < 0) {
1364 warn("unable to read kern.pid_max");
1372 #define SINGLE_OPTS "[-aCcde" OPT_LAZY_f "HhjlmrSTuvwXxZ]"
1374 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
1375 "usage: ps " SINGLE_OPTS " [-O fmt | -o fmt] [-G gid[,gid...]]",
1376 " [-M core] [-N system]",
1377 " [-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]",