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 * ------+---------+---------+-------- + --------+---------+---------+---------*
39 #include <sys/param.h>
44 #include <sys/ioctl.h>
45 #include <sys/sysctl.h>
46 #include <sys/mount.h>
67 #define _PATH_PTS "/dev/pts/"
69 #define W_SEP " \t" /* "Whitespace" list separators */
70 #define T_SEP "," /* "Terminate-element" list separators */
74 #define OPT_LAZY_f "f"
76 #define DEF_UREAD 1 /* Always do the more-expensive read. */
77 #define OPT_LAZY_f /* I.e., the `-f' option is not added. */
81 * isdigit takes an `int', but expects values in the range of unsigned char.
82 * This wrapper ensures that values from a 'char' end up in the correct range.
84 #define isdigitch(Anychar) isdigit((u_char)(Anychar))
87 int eval; /* Exit value */
88 time_t now; /* Current time(3) value */
90 int sumrusage; /* -S */
91 int termwidth; /* Width of the screen (0 == infinity). */
92 int showthreads; /* will threads be shown? */
94 struct velisthead varlist = STAILQ_HEAD_INITIALIZER(varlist);
96 static int forceuread = DEF_UREAD; /* Do extra work to get u-area. */
98 static int needcomm; /* -o "command" */
99 static int needenv; /* -e */
100 static int needuser; /* -o "user" */
101 static int optfatal; /* Fatal error parsing some list-option. */
102 static int pid_max; /* kern.pid_max */
104 static enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT;
107 typedef int addelem_rtn(struct listinfo *_inf, const char *_elem);
113 addelem_rtn *addelem;
125 static int addelem_gid(struct listinfo *, const char *);
126 static int addelem_jid(struct listinfo *, const char *);
127 static int addelem_pid(struct listinfo *, const char *);
128 static int addelem_tty(struct listinfo *, const char *);
129 static int addelem_uid(struct listinfo *, const char *);
130 static void add_list(struct listinfo *, const char *);
131 static void descendant_sort(KINFO *, int);
132 static void format_output(KINFO *);
133 static void *expand_list(struct listinfo *);
135 fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int),
136 KINFO *, char *, char *, int);
137 static void free_list(struct listinfo *);
138 static void init_list(struct listinfo *, addelem_rtn, int, const char *);
139 static char *kludge_oldps_options(const char *, char *, const char *);
140 static int pscomp(const void *, const void *);
141 static void saveuser(KINFO *);
142 static void scanvars(void);
143 static void sizevars(void);
144 static void pidmax_init(void);
145 static void usage(void);
147 static char dfmt[] = "pid,tt,state,time,command";
148 static char jfmt[] = "user,pid,ppid,pgid,sid,jobc,state,tt,time,command";
149 static char lfmt[] = "uid,pid,ppid,cpu,pri,nice,vsz,rss,mwchan,state,"
151 static char o1[] = "pid";
152 static char o2[] = "tt,state,time,command";
153 static char ufmt[] = "user,pid,%cpu,%mem,vsz,rss,tt,state,start,time,command";
154 static char vfmt[] = "pid,state,time,sl,re,pagein,vsz,rss,lim,tsiz,"
156 static char Zfmt[] = "label";
158 #define PS_ARGS "AaCcD:de" OPT_LAZY_f "G:gHhjJ:LlM:mN:O:o:p:rSTt:U:uvwXxZ"
161 main(int argc, char *argv[])
163 struct listinfo gidlist, jidlist, pgrplist, pidlist;
164 struct listinfo ruidlist, sesslist, ttylist, uidlist;
165 struct kinfo_proc *kp;
166 KINFO *kinfo = NULL, *next_KINFO;
169 struct winsize ws = { .ws_row = 0 };
170 const char *nlistf, *memf, *str;
172 int all, ch, elem, flag, _fmt, i, lineno, linelen, left;
173 int descendancy, nentries, nkept, nselectors;
174 int prtheader, wflag, what, xkeep, xkeep_implied;
175 int fwidthmin, fwidthmax;
176 char errbuf[_POSIX2_LINE_MAX];
177 char fmtbuf[_POSIX2_LINE_MAX];
178 enum { NONE = 0, UP = 1, DOWN = 2, BOTH = 1 | 2 } directions = NONE;
179 struct { int traversed; int initial; } pid_count;
181 (void) setlocale(LC_ALL, "");
182 time(&now); /* Used by routines in print.c. */
185 * Compute default output line length before processing options.
186 * If COLUMNS is set, use it. Otherwise, if this is part of an
187 * interactive job (i.e. one associated with a terminal), use
188 * the terminal width. "Interactive" is determined by whether
189 * any of stdout, stderr, or stdin is a terminal. The intent
190 * is that "ps", "ps | more", and "ps | grep" all use the same
191 * default line length unless -w is specified.
193 * If not interactive, the default length was traditionally 79.
194 * It has been changed to unlimited. This is mostly for the
195 * benefit of non-interactive scripts, which arguably should
196 * use -ww, but is compatible with Linux.
198 if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0')
199 termwidth = atoi(cols);
200 else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
201 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
202 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) ||
204 termwidth = UNLIMITED;
206 termwidth = ws.ws_col - 1;
209 * Hide a number of option-processing kludges in a separate routine,
210 * to support some historical BSD behaviors, such as `ps axu'.
213 argv[1] = kludge_oldps_options(PS_ARGS, argv[1], argv[2]);
217 all = descendancy = _fmt = nselectors = optfatal = 0;
218 prtheader = showthreads = wflag = xkeep_implied = 0;
219 xkeep = -1; /* Neither -x nor -X. */
220 init_list(&gidlist, addelem_gid, sizeof(gid_t), "group");
221 init_list(&jidlist, addelem_jid, sizeof(int), "jail id");
222 init_list(&pgrplist, addelem_pid, sizeof(pid_t), "process group");
223 init_list(&pidlist, addelem_pid, sizeof(pid_t), "process id");
224 init_list(&ruidlist, addelem_uid, sizeof(uid_t), "ruser");
225 init_list(&sesslist, addelem_pid, sizeof(pid_t), "session id");
226 init_list(&ttylist, addelem_tty, sizeof(dev_t), "tty");
227 init_list(&uidlist, addelem_uid, sizeof(uid_t), "user");
228 memf = _PATH_DEVNULL;
231 argc = xo_parse_args(argc, argv);
235 while ((ch = getopt(argc, argv, PS_ARGS)) != -1)
239 * Exactly the same as `-ax'. This has been
240 * added for compatibility with SUSv3, but for
241 * now it will not be described in the man page.
255 size_t len = strlen(optarg);
258 strncasecmp(optarg, "up", len) == 0)
261 strncasecmp(optarg, "down", len) == 0)
264 strncasecmp(optarg, "both", len) == 0)
271 case 'e': /* XXX set ufmt */
276 if (getuid() == 0 || getgid() == 0)
281 add_list(&gidlist, optarg);
288 * XXX - This SUSv3 behavior is still under debate
289 * since it conflicts with the (undocumented)
290 * `-g' option. So we skip it for now.
292 add_list(&pgrplist, optarg);
297 /* The historical BSD-ish (from SunOS) behavior. */
301 showthreads = KERN_PROC_INC_THREAD;
304 prtheader = ws.ws_row > 5 ? ws.ws_row : 22;
307 add_list(&jidlist, optarg);
337 o1[0] = o2[0] = '\0';
345 add_list(&pidlist, optarg);
347 * Note: `-p' does not *set* xkeep, but any values
348 * from pidlist are checked before xkeep is. That
349 * way they are always matched, even if the user
357 * XXX - This un-standard option is still under
358 * debate. This is what SUSv3 defines as
359 * the `-U' option, and while it would be
360 * nice to have, it could cause even more
361 * confusion to implement it as `-R'.
363 add_list(&ruidlist, optarg);
377 * XXX - This non-standard option is still under
378 * debate. This *is* supported on Solaris,
379 * Linux, and IRIX, but conflicts with `-s'
380 * on NetBSD and maybe some older BSD's.
382 add_list(&sesslist, optarg);
388 if ((optarg = ttyname(STDIN_FILENO)) == NULL)
389 xo_errx(1, "stdin: not a terminal");
392 add_list(&ttylist, optarg);
397 /* This is what SUSv3 defines as the `-u' option. */
398 add_list(&uidlist, optarg);
416 termwidth = UNLIMITED;
417 else if (termwidth < 131 && termwidth != UNLIMITED)
423 * Note that `-X' and `-x' are not standard "selector"
424 * options. For most selector-options, we check *all*
425 * processes to see if any are matched by the given
426 * value(s). After we have a set of all the matched
427 * processes, then `-X' and `-x' govern whether we
428 * modify that *matched* set for processes which do
429 * not have a controlling terminal. `-X' causes
430 * those processes to be deleted from the matched
431 * set, while `-x' causes them to be kept.
450 * If there arguments after processing all the options, attempt
451 * to treat them as a list of process ids.
454 if (!isdigitch(**argv))
456 add_list(&pidlist, *argv);
460 xo_warnx("illegal argument: %s\n", *argv);
464 exit(1); /* Error messages already printed. */
465 if (xkeep < 0) /* Neither -X nor -x was specified. */
466 xkeep = xkeep_implied;
468 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
470 xo_errx(1, "%s", errbuf);
475 if (!all && nselectors == 0) {
476 uidlist.l.ptr = malloc(sizeof(uid_t));
477 if (uidlist.l.ptr == NULL)
478 xo_errx(1, "malloc failed");
480 uidlist.count = uidlist.maxcount = 1;
481 *uidlist.l.uids = getuid();
485 * scan requested variables, noting what structures are needed,
486 * and adjusting header widths as appropriate.
491 * Get process list. If the user requested just one selector-
492 * option, then kvm_getprocs can be asked to return just those
493 * processes. Otherwise, have it return all processes, and
494 * then this routine will search that full list and select the
495 * processes which match any of the user's selector-options.
497 what = showthreads != 0 ? KERN_PROC_ALL : KERN_PROC_PROC;
499 if (nselectors == 1) {
500 if (gidlist.count == 1) {
501 what = KERN_PROC_RGID | showthreads;
502 flag = *gidlist.l.gids;
504 } else if (pgrplist.count == 1) {
505 what = KERN_PROC_PGRP | showthreads;
506 flag = *pgrplist.l.pids;
508 } else if (pidlist.count == 1 && directions == NONE) {
509 what = KERN_PROC_PID | showthreads;
510 flag = *pidlist.l.pids;
512 } else if (ruidlist.count == 1) {
513 what = KERN_PROC_RUID | showthreads;
514 flag = *ruidlist.l.uids;
516 } else if (sesslist.count == 1) {
517 what = KERN_PROC_SESSION | showthreads;
518 flag = *sesslist.l.pids;
520 } else if (ttylist.count == 1) {
521 what = KERN_PROC_TTY | showthreads;
522 flag = *ttylist.l.ttys;
524 } else if (uidlist.count == 1) {
525 what = KERN_PROC_UID | showthreads;
526 flag = *uidlist.l.uids;
535 kp = kvm_getprocs(kd, what, flag, &nentries);
537 * Ignore ESRCH to preserve behaviour of "ps -p nonexistent-pid"
538 * not reporting an error.
540 if ((kp == NULL && errno != ESRCH) || (kp != NULL && nentries < 0))
541 xo_errx(1, "%s", kvm_geterr(kd));
543 pid_count.initial = pidlist.count;
544 if (directions & DOWN)
545 for (elem = 0; elem < pidlist.count; elem++)
546 for (i = 0; i < nentries; i++) {
547 if (kp[i].ki_ppid == kp[i].ki_pid)
549 if (kp[i].ki_ppid == pidlist.l.pids[elem]) {
550 if (pidlist.count >= pidlist.maxcount)
551 expand_list(&pidlist);
552 pidlist.l.pids[pidlist.count++] = kp[i].ki_pid;
555 pid_count.traversed = pidlist.count;
557 for (elem = 0; elem < pidlist.count; elem++) {
558 if (elem >= pid_count.initial && elem < pid_count.traversed)
560 for (i = 0; i < nentries; i++) {
561 if (kp[i].ki_ppid == kp[i].ki_pid)
563 if (kp[i].ki_pid == pidlist.l.pids[elem]) {
564 if (pidlist.count >= pidlist.maxcount)
565 expand_list(&pidlist);
566 pidlist.l.pids[pidlist.count++] = kp[i].ki_ppid;
571 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL)
572 xo_errx(1, "malloc failed");
573 for (i = nentries; --i >= 0; ++kp) {
575 * If the user specified multiple selection-criteria,
576 * then keep any process matched by the inclusive OR
577 * of all the selection-criteria given.
579 if (pidlist.count > 0) {
580 for (elem = 0; elem < pidlist.count; elem++)
581 if (kp->ki_pid == pidlist.l.pids[elem])
585 * Note that we had to process pidlist before
586 * filtering out processes which do not have
587 * a controlling terminal.
590 if ((kp->ki_tdev == NODEV ||
591 (kp->ki_flag & P_CONTROLT) == 0))
596 if (gidlist.count > 0) {
597 for (elem = 0; elem < gidlist.count; elem++)
598 if (kp->ki_rgid == gidlist.l.gids[elem])
601 if (jidlist.count > 0) {
602 for (elem = 0; elem < jidlist.count; elem++)
603 if (kp->ki_jid == jidlist.l.jids[elem])
606 if (pgrplist.count > 0) {
607 for (elem = 0; elem < pgrplist.count; elem++)
609 pgrplist.l.pids[elem])
612 if (ruidlist.count > 0) {
613 for (elem = 0; elem < ruidlist.count; elem++)
615 ruidlist.l.uids[elem])
618 if (sesslist.count > 0) {
619 for (elem = 0; elem < sesslist.count; elem++)
620 if (kp->ki_sid == sesslist.l.pids[elem])
623 if (ttylist.count > 0) {
624 for (elem = 0; elem < ttylist.count; elem++)
625 if (kp->ki_tdev == ttylist.l.ttys[elem])
628 if (uidlist.count > 0) {
629 for (elem = 0; elem < uidlist.count; elem++)
630 if (kp->ki_uid == uidlist.l.uids[elem])
634 * This process did not match any of the user's
635 * selector-options, so skip the process.
640 next_KINFO = &kinfo[nkept];
641 next_KINFO->ki_p = kp;
642 next_KINFO->ki_d.level = 0;
643 next_KINFO->ki_d.prefix = NULL;
644 next_KINFO->ki_pcpu = getpcpu(next_KINFO);
645 if (sortby == SORTMEM)
646 next_KINFO->ki_memsize = kp->ki_tsize +
647 kp->ki_dsize + kp->ki_ssize;
649 saveuser(next_KINFO);
665 qsort(kinfo, nkept, sizeof(KINFO), pscomp);
668 * We want things in descendant order
671 descendant_sort(kinfo, nkept);
675 * Prepare formatted output.
677 for (i = 0; i < nkept; i++)
678 format_output(&kinfo[i]);
683 xo_open_container("process-information");
685 if (xo_get_style(NULL) != XO_STYLE_TEXT)
686 termwidth = UNLIMITED;
689 * Output formatted lines.
691 xo_open_list("process");
692 for (i = lineno = 0; i < nkept; i++) {
694 xo_open_instance("process");
695 STAILQ_FOREACH(vent, &varlist, next_ve) {
696 ks = STAILQ_FIRST(&kinfo[i].ki_ks);
697 STAILQ_REMOVE_HEAD(&kinfo[i].ki_ks, ks_next);
698 /* Truncate rightmost column if necessary. */
699 fwidthmax = _POSIX2_LINE_MAX;
700 if (STAILQ_NEXT(vent, next_ve) == NULL &&
701 termwidth != UNLIMITED && ks->ks_str != NULL) {
702 left = termwidth - linelen;
703 if (left > 0 && left < (int)strlen(ks->ks_str))
710 /* No padding for the last column, if it's LJUST. */
711 fwidthmin = (xo_get_style(NULL) != XO_STYLE_TEXT ||
712 (STAILQ_NEXT(vent, next_ve) == NULL &&
713 (vent->var->flag & LJUST))) ? 0 : vent->var->width;
714 snprintf(fmtbuf, sizeof(fmtbuf), "{:%s/%%%s%d..%dhs}",
715 vent->var->field ? vent->var->field : vent->var->name,
716 (vent->var->flag & LJUST) ? "-" : "",
717 fwidthmin, fwidthmax);
718 xo_emit(fmtbuf, str);
719 linelen += fwidthmin;
721 if (ks->ks_str != NULL) {
728 if (STAILQ_NEXT(vent, next_ve) != NULL) {
734 xo_close_instance("process");
735 if (prtheader && lineno++ == prtheader - 4) {
741 xo_close_list("process");
742 xo_close_container("process-information");
748 free_list(&pgrplist);
749 free_list(&ruidlist);
750 free_list(&sesslist);
753 for (i = 0; i < nkept; i++)
754 free(kinfo[i].ki_d.prefix);
761 addelem_gid(struct listinfo *inf, const char *elem)
764 const char *nameorID;
768 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
770 xo_warnx("Invalid (zero-length) %s name", inf->lname);
772 xo_warnx("%s name too long: %s", inf->lname, elem);
774 return (0); /* Do not add this value. */
778 * SUSv3 states that `ps -G grouplist' should match "real-group
779 * ID numbers", and does not mention group-names. I do want to
780 * also support group-names, so this tries for a group-id first,
781 * and only tries for a name if that doesn't work. This is the
782 * opposite order of what is done in addelem_uid(), but in
783 * practice the order would only matter for group-names which
789 bigtemp = strtoul(elem, &endp, 10);
790 if (errno == 0 && *endp == '\0' && bigtemp <= GID_MAX) {
791 nameorID = "name or ID matches";
792 grp = getgrgid((gid_t)bigtemp);
795 grp = getgrnam(elem);
797 xo_warnx("No %s %s '%s'", inf->lname, nameorID, elem);
801 if (inf->count >= inf->maxcount)
803 inf->l.gids[(inf->count)++] = grp->gr_gid;
808 addelem_jid(struct listinfo *inf, const char *elem)
813 warnx("Invalid (zero-length) jail id");
815 return (0); /* Do not add this value. */
818 tempid = jail_getid(elem);
820 warnx("Invalid %s: %s", inf->lname, elem);
825 if (inf->count >= inf->maxcount)
827 inf->l.jids[(inf->count)++] = tempid;
832 addelem_pid(struct listinfo *inf, const char *elem)
838 xo_warnx("Invalid (zero-length) process id");
840 return (0); /* Do not add this value. */
844 tempid = strtol(elem, &endp, 10);
845 if (*endp != '\0' || tempid < 0 || elem == endp) {
846 xo_warnx("Invalid %s: %s", inf->lname, elem);
848 } else if (errno != 0 || tempid > pid_max) {
849 xo_warnx("%s too large: %s", inf->lname, elem);
852 if (errno == ERANGE) {
856 if (inf->count >= inf->maxcount)
858 inf->l.pids[(inf->count)++] = tempid;
863 * The user can specify a device via one of three formats:
864 * 1) fully qualified, e.g.: /dev/ttyp0 /dev/console /dev/pts/0
865 * 2) missing "/dev", e.g.: ttyp0 console pts/0
866 * 3) two-letters, e.g.: p0 co 0
867 * (matching letters that would be seen in the "TT" column)
870 addelem_tty(struct listinfo *inf, const char *elem)
874 char pathbuf[PATH_MAX], pathbuf2[PATH_MAX], pathbuf3[PATH_MAX];
884 if (strcmp(elem, "co") == 0) {
885 ttypath = _PATH_CONSOLE;
890 strlcpy(pathbuf, _PATH_DEV, sizeof(pathbuf));
891 strlcat(pathbuf, elem, sizeof(pathbuf));
893 if (strncmp(pathbuf, _PATH_TTY, strlen(_PATH_TTY)) == 0)
895 if (strncmp(pathbuf, _PATH_PTS, strlen(_PATH_PTS)) == 0)
897 if (strcmp(pathbuf, _PATH_CONSOLE) == 0)
899 /* Check to see if /dev/tty${elem} exists */
900 strlcpy(pathbuf2, _PATH_TTY, sizeof(pathbuf2));
901 strlcat(pathbuf2, elem, sizeof(pathbuf2));
902 if (stat(pathbuf2, &sb) == 0 && S_ISCHR(sb.st_mode)) {
903 /* No need to repeat stat() && S_ISCHR() checks */
907 /* Check to see if /dev/pts/${elem} exists */
908 strlcpy(pathbuf3, _PATH_PTS, sizeof(pathbuf3));
909 strlcat(pathbuf3, elem, sizeof(pathbuf3));
910 if (stat(pathbuf3, &sb) == 0 && S_ISCHR(sb.st_mode)) {
911 /* No need to repeat stat() && S_ISCHR() checks */
918 if (stat(ttypath, &sb) == -1) {
919 if (pathbuf3[0] != '\0')
920 xo_warn("%s, %s, and %s", pathbuf3, pathbuf2,
923 xo_warn("%s", ttypath);
927 if (!S_ISCHR(sb.st_mode)) {
928 if (pathbuf3[0] != '\0')
929 xo_warnx("%s, %s, and %s: Not a terminal",
930 pathbuf3, pathbuf2, ttypath);
932 xo_warnx("%s: Not a terminal", ttypath);
937 if (inf->count >= inf->maxcount)
939 inf->l.ttys[(inf->count)++] = sb.st_rdev;
944 addelem_uid(struct listinfo *inf, const char *elem)
950 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
952 xo_warnx("Invalid (zero-length) %s name", inf->lname);
954 xo_warnx("%s name too long: %s", inf->lname, elem);
956 return (0); /* Do not add this value. */
959 pwd = getpwnam(elem);
962 bigtemp = strtoul(elem, &endp, 10);
963 if (errno != 0 || *endp != '\0' || bigtemp > UID_MAX)
964 xo_warnx("No %s named '%s'", inf->lname, elem);
966 /* The string is all digits, so it might be a userID. */
967 pwd = getpwuid((uid_t)bigtemp);
969 xo_warnx("No %s name or ID matches '%s'",
975 * These used to be treated as minor warnings (and the
976 * option was simply ignored), but now they are fatal
977 * errors (and the command will be aborted).
982 if (inf->count >= inf->maxcount)
984 inf->l.uids[(inf->count)++] = pwd->pw_uid;
989 add_list(struct listinfo *inf, const char *argp)
994 char elemcopy[PATH_MAX];
997 inf->addelem(inf, argp);
998 while (*argp != '\0') {
999 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
1004 if (strchr(T_SEP, *argp) == NULL) {
1005 endp = elemcopy + sizeof(elemcopy) - 1;
1006 while (*argp != '\0' && cp <= endp &&
1007 strchr(W_SEP T_SEP, *argp) == NULL)
1015 * Add this single element to the given list.
1017 inf->addelem(inf, elemcopy);
1020 * The string is too long to copy. Find the end
1021 * of the string to print out the warning message.
1023 while (*argp != '\0' && strchr(W_SEP T_SEP,
1026 xo_warnx("Value too long: %.*s", (int)(argp - savep),
1031 * Skip over any number of trailing whitespace characters,
1032 * but only one (at most) trailing element-terminating
1035 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
1037 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) {
1039 /* Catch case where string ended with a comma. */
1041 inf->addelem(inf, argp);
1047 descendant_sort(KINFO *ki, int items)
1049 int dst, lvl, maxlvl, n, ndst, nsrc, siblings, src;
1050 unsigned char *path;
1054 * First, sort the entries by descendancy, tracking the descendancy
1055 * depth in the ki_d.level field.
1059 while (src < items) {
1060 if (ki[src].ki_d.level) {
1064 for (nsrc = 1; src + nsrc < items; nsrc++)
1065 if (!ki[src + nsrc].ki_d.level)
1068 for (dst = 0; dst < items; dst++) {
1069 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_pid)
1071 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_ppid)
1080 for (ndst = 1; dst + ndst < items; ndst++)
1081 if (ki[dst + ndst].ki_d.level <= ki[dst].ki_d.level)
1084 for (n = src; n < src + nsrc; n++) {
1085 ki[n].ki_d.level += ki[dst].ki_d.level + 1;
1086 if (maxlvl < ki[n].ki_d.level)
1087 maxlvl = ki[n].ki_d.level;
1093 memmove(ki + src, ki + src + 1,
1094 (dst - src + ndst - 1) * sizeof *ki);
1095 ki[dst + ndst - 1] = kn;
1099 } else if (src != dst + ndst) {
1101 memmove(ki + dst + ndst + 1, ki + dst + ndst,
1102 (src - dst - ndst) * sizeof *ki);
1103 ki[dst + ndst] = kn;
1116 * Now populate ki_d.prefix (instead of ki_d.level) with the command
1117 * prefix used to show descendancies.
1119 path = calloc((maxlvl + 7) / 8, sizeof(unsigned char));
1120 for (src = 0; src < items; src++) {
1121 if ((lvl = ki[src].ki_d.level) == 0) {
1122 ki[src].ki_d.prefix = NULL;
1125 if ((ki[src].ki_d.prefix = malloc(lvl * 2 + 1)) == NULL)
1126 xo_errx(1, "malloc failed");
1127 for (n = 0; n < lvl - 2; n++) {
1128 ki[src].ki_d.prefix[n * 2] =
1129 path[n / 8] & 1 << (n % 8) ? '|' : ' ';
1130 ki[src].ki_d.prefix[n * 2 + 1] = ' ';
1133 /* Have I any more siblings? */
1134 for (siblings = 0, dst = src + 1; dst < items; dst++) {
1135 if (ki[dst].ki_d.level > lvl)
1137 if (ki[dst].ki_d.level == lvl)
1142 path[n / 8] |= 1 << (n % 8);
1144 path[n / 8] &= ~(1 << (n % 8));
1145 ki[src].ki_d.prefix[n * 2] = siblings ? '|' : '`';
1146 ki[src].ki_d.prefix[n * 2 + 1] = '-';
1149 strcpy(ki[src].ki_d.prefix + n * 2, "- ");
1155 expand_list(struct listinfo *inf)
1160 newmax = (inf->maxcount + 1) << 1;
1161 newlist = realloc(inf->l.ptr, newmax * inf->elemsize);
1162 if (newlist == NULL) {
1164 xo_errx(1, "realloc to %d %ss failed", newmax, inf->lname);
1166 inf->maxcount = newmax;
1167 inf->l.ptr = newlist;
1173 free_list(struct listinfo *inf)
1176 inf->count = inf->elemsize = inf->maxcount = 0;
1177 if (inf->l.ptr != NULL)
1179 inf->addelem = NULL;
1185 init_list(struct listinfo *inf, addelem_rtn artn, int elemsize,
1189 inf->count = inf->maxcount = 0;
1190 inf->elemsize = elemsize;
1191 inf->addelem = artn;
1197 find_varentry(VAR *v)
1199 struct varent *vent;
1201 STAILQ_FOREACH(vent, &varlist, next_ve) {
1202 if (strcmp(vent->var->name, v->name) == 0)
1211 struct varent *vent;
1214 STAILQ_FOREACH(vent, &varlist, next_ve) {
1224 format_output(KINFO *ki)
1226 struct varent *vent;
1232 STAILQ_INIT(&ki->ki_ks);
1233 STAILQ_FOREACH(vent, &varlist, next_ve) {
1235 str = (v->oproc)(ki, vent);
1236 ks = malloc(sizeof(*ks));
1238 xo_errx(1, "malloc failed");
1240 STAILQ_INSERT_TAIL(&ki->ki_ks, ks, ks_next);
1253 struct varent *vent;
1257 STAILQ_FOREACH(vent, &varlist, next_ve) {
1259 i = strlen(vent->header);
1266 fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki,
1267 char *comm, char *thread, int maxlen)
1271 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm,
1272 showthreads && ki->ki_p->ki_numthreads > 1 ? thread : NULL, maxlen);
1276 #define UREADOK(ki) (forceuread || (ki->ki_p->ki_flag & P_INMEM))
1281 char tdname[COMMLEN + 1];
1284 if (ki->ki_p->ki_flag & P_INMEM) {
1286 * The u-area might be swapped out, and we can't get
1287 * at it because we have a crashdump and no swap.
1288 * If it's here fill in these fields, otherwise, just
1295 * save arguments if needed
1298 if (ki->ki_p->ki_stat == SZOMB) {
1299 ki->ki_args = strdup("<defunct>");
1300 } else if (UREADOK(ki) || (ki->ki_p->ki_args != NULL)) {
1301 (void)snprintf(tdname, sizeof(tdname), "%s%s",
1302 ki->ki_p->ki_tdname, ki->ki_p->ki_moretdname);
1303 ki->ki_args = fmt(kvm_getargv, ki,
1304 ki->ki_p->ki_comm, tdname, COMMLEN * 2 + 1);
1306 asprintf(&argsp, "(%s)", ki->ki_p->ki_comm);
1307 ki->ki_args = argsp;
1309 if (ki->ki_args == NULL)
1310 xo_errx(1, "malloc failed");
1316 ki->ki_env = fmt(kvm_getenvv, ki,
1317 (char *)NULL, (char *)NULL, 0);
1319 ki->ki_env = strdup("()");
1320 if (ki->ki_env == NULL)
1321 xo_errx(1, "malloc failed");
1327 /* A macro used to improve the readability of pscomp(). */
1328 #define DIFF_RETURN(a, b, field) do { \
1329 if ((a)->field != (b)->field) \
1330 return (((a)->field < (b)->field) ? -1 : 1); \
1334 pscomp(const void *a, const void *b)
1336 const KINFO *ka, *kb;
1340 /* SORTCPU and SORTMEM are sorted in descending order. */
1341 if (sortby == SORTCPU)
1342 DIFF_RETURN(kb, ka, ki_pcpu);
1343 if (sortby == SORTMEM)
1344 DIFF_RETURN(kb, ka, ki_memsize);
1346 * TTY's are sorted in ascending order, except that all NODEV
1347 * processes come before all processes with a device.
1349 if (ka->ki_p->ki_tdev != kb->ki_p->ki_tdev) {
1350 if (ka->ki_p->ki_tdev == NODEV)
1352 if (kb->ki_p->ki_tdev == NODEV)
1354 DIFF_RETURN(ka, kb, ki_p->ki_tdev);
1357 /* PID's and TID's (threads) are sorted in ascending order. */
1358 DIFF_RETURN(ka, kb, ki_p->ki_pid);
1359 DIFF_RETURN(ka, kb, ki_p->ki_tid);
1365 * ICK (all for getopt), would rather hide the ugliness
1366 * here than taint the main code.
1371 * The old convention that 't' with no trailing tty arg means the users
1372 * tty, is only supported if argv[1] doesn't begin with a '-'. This same
1373 * feature is available with the option 'T', which takes no argument.
1376 kludge_oldps_options(const char *optlist, char *origval, const char *nextarg)
1379 char *argp, *cp, *newopts, *ns, *optp, *pidp;
1382 * See if the original value includes any option which takes an
1383 * argument (and will thus use up the remainder of the string).
1386 if (optlist != NULL) {
1387 for (cp = origval; *cp != '\0'; cp++) {
1388 optp = strchr(optlist, *cp);
1389 if ((optp != NULL) && *(optp + 1) == ':') {
1395 if (argp != NULL && *origval == '-')
1399 * if last letter is a 't' flag with no argument (in the context
1400 * of the oldps options -- option string NOT starting with a '-' --
1401 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)).
1403 * However, if a flag accepting a string argument is found earlier
1404 * in the option string (including a possible `t' flag), then the
1405 * remainder of the string must be the argument to that flag; so
1406 * do not modify that argument. Note that a trailing `t' would
1407 * cause argp to be set, if argp was not already set by some
1410 len = strlen(origval);
1411 cp = origval + len - 1;
1413 if (*cp == 't' && *origval != '-' && cp == argp) {
1414 if (nextarg == NULL || *nextarg == '-' || isdigitch(*nextarg))
1416 } else if (argp == NULL) {
1418 * The original value did not include any option which takes
1419 * an argument (and that would include `p' and `t'), so check
1420 * the value for trailing number, or comma-separated list of
1421 * numbers, which we will treat as a pid request.
1423 if (isdigitch(*cp)) {
1424 while (cp >= origval && (*cp == ',' || isdigitch(*cp)))
1431 * If nothing needs to be added to the string, then return
1432 * the "original" (although possibly modified) value.
1434 if (*origval == '-' && pidp == NULL)
1438 * Create a copy of the string to add '-' and/or 'p' to the
1441 if ((newopts = ns = malloc(len + 3)) == NULL)
1442 xo_errx(1, "malloc failed");
1444 if (*origval != '-')
1445 *ns++ = '-'; /* add option flag */
1448 strcpy(ns, origval);
1451 * Copy everything before the pid string, add the `p',
1452 * and then copy the pid string.
1454 len = pidp - origval;
1455 memcpy(ns, origval, len);
1469 intsize = sizeof(pid_max);
1470 if (sysctlbyname("kern.pid_max", &pid_max, &intsize, NULL, 0) < 0) {
1471 xo_warn("unable to read kern.pid_max");
1479 #define SINGLE_OPTS "[-aCcde" OPT_LAZY_f "HhjlmrSTuvwXxZ]"
1481 (void)xo_error("%s\n%s\n%s\n%s\n%s\n",
1482 "usage: ps [--libxo] " SINGLE_OPTS " [-O fmt | -o fmt]",
1483 " [-G gid[,gid...]] [-J jid[,jid...]] [-M core] [-N system]",
1484 " [-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]",
1485 " [-D up | down | both]",
1486 " ps [--libxo] -L");