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 totwidth; /* Calculated-width of requested variables. */
104 struct velisthead varlist = STAILQ_HEAD_INITIALIZER(varlist);
106 static int forceuread = DEF_UREAD; /* Do extra work to get u-area. */
109 static int needcomm; /* -o "command" */
110 static int needenv; /* -e */
111 static int needuser; /* -o "user" */
112 static int optfatal; /* Fatal error parsing some list-option. */
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 check_procfs(void);
135 static int addelem_gid(struct listinfo *, const char *);
136 static int addelem_pid(struct listinfo *, const char *);
137 static int addelem_tty(struct listinfo *, const char *);
138 static int addelem_uid(struct listinfo *, const char *);
139 static void add_list(struct listinfo *, const char *);
140 static void dynsizevars(KINFO *);
141 static void *expand_list(struct listinfo *);
143 fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int),
144 KINFO *, 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 usage(void);
154 static char dfmt[] = "pid,tt,state,time,command";
155 static char jfmt[] = "user,pid,ppid,pgid,sid,jobc,state,tt,time,command";
156 static char lfmt[] = "uid,pid,ppid,cpu,pri,nice,vsz,rss,mwchan,state,"
158 static char o1[] = "pid";
159 static char o2[] = "tt,state,time,command";
160 static char ufmt[] = "user,pid,%cpu,%mem,vsz,rss,tt,state,start,time,command";
161 static char vfmt[] = "pid,state,time,sl,re,pagein,vsz,rss,lim,tsiz,"
163 static char Zfmt[] = "label";
165 #define PS_ARGS "AaCce" OPT_LAZY_f "G:gHhjLlM:mN:O:o:p:rSTt:U:uvwXxZ"
168 main(int argc, char *argv[])
170 struct listinfo gidlist, pgrplist, pidlist;
171 struct listinfo ruidlist, sesslist, ttylist, uidlist;
172 struct kinfo_proc *kp;
176 const char *nlistf, *memf;
178 int all, ch, elem, flag, _fmt, i, lineno;
179 int nentries, nkept, nselectors;
180 int prtheader, showthreads, wflag, what, xkeep, xkeep_implied;
181 char errbuf[_POSIX2_LINE_MAX];
183 (void) setlocale(LC_ALL, "");
184 time(&now); /* Used by routines in print.c. */
186 if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0')
187 termwidth = atoi(cols);
188 else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
189 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
190 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) ||
194 termwidth = ws.ws_col - 1;
197 * Hide a number of option-processing kludges in a separate routine,
198 * to support some historical BSD behaviors, such as `ps axu'.
201 argv[1] = kludge_oldps_options(PS_ARGS, argv[1], argv[2]);
203 all = _fmt = nselectors = optfatal = 0;
204 prtheader = showthreads = wflag = xkeep_implied = 0;
205 xkeep = -1; /* Neither -x nor -X. */
206 init_list(&gidlist, addelem_gid, sizeof(gid_t), "group");
207 init_list(&pgrplist, addelem_pid, sizeof(pid_t), "process group");
208 init_list(&pidlist, addelem_pid, sizeof(pid_t), "process id");
209 init_list(&ruidlist, addelem_uid, sizeof(uid_t), "ruser");
210 init_list(&sesslist, addelem_pid, sizeof(pid_t), "session id");
211 init_list(&ttylist, addelem_tty, sizeof(dev_t), "tty");
212 init_list(&uidlist, addelem_uid, sizeof(uid_t), "user");
213 memf = nlistf = _PATH_DEVNULL;
214 while ((ch = getopt(argc, argv, PS_ARGS)) != -1)
218 * Exactly the same as `-ax'. This has been
219 * added for compatability with SUSv3, but for
220 * now it will not be described in the man page.
235 case 'e': /* XXX set ufmt */
240 if (getuid() == 0 || getgid() == 0)
245 add_list(&gidlist, optarg);
252 * XXX - This SUSv3 behavior is still under debate
253 * since it conflicts with the (undocumented)
254 * `-g' option. So we skip it for now.
256 add_list(&pgrplist, optarg);
261 /* The historical BSD-ish (from SunOS) behavior. */
265 showthreads = KERN_PROC_INC_THREAD;
268 prtheader = ws.ws_row > 5 ? ws.ws_row : 22;
296 o1[0] = o2[0] = '\0';
304 add_list(&pidlist, optarg);
306 * Note: `-p' does not *set* xkeep, but any values
307 * from pidlist are checked before xkeep is. That
308 * way they are always matched, even if the user
316 * XXX - This un-standard option is still under
317 * debate. This is what SUSv3 defines as
318 * the `-U' option, and while it would be
319 * nice to have, it could cause even more
320 * confusion to implement it as `-R'.
322 add_list(&ruidlist, optarg);
336 * XXX - This non-standard option is still under
337 * debate. This *is* supported on Solaris,
338 * Linux, and IRIX, but conflicts with `-s'
339 * on NetBSD and maybe some older BSD's.
341 add_list(&sesslist, optarg);
347 if ((optarg = ttyname(STDIN_FILENO)) == NULL)
348 errx(1, "stdin: not a terminal");
351 add_list(&ttylist, optarg);
356 /* This is what SUSv3 defines as the `-u' option. */
357 add_list(&uidlist, optarg);
375 termwidth = UNLIMITED;
376 else if (termwidth < 131)
382 * Note that `-X' and `-x' are not standard "selector"
383 * options. For most selector-options, we check *all*
384 * processes to see if any are matched by the given
385 * value(s). After we have a set of all the matched
386 * processes, then `-X' and `-x' govern whether we
387 * modify that *matched* set for processes which do
388 * not have a controlling terminal. `-X' causes
389 * those processes to be deleted from the matched
390 * set, while `-x' causes them to be kept.
409 * If the user specified ps -e then they want a copy of the process
410 * environment kvm_getenvv(3) attempts to open /proc/<pid>/mem.
411 * Check to make sure that procfs is mounted on /proc, otherwise
412 * print a warning informing the user that output will be incomplete.
414 if (needenv == 1 && check_procfs() == 0)
415 warnx("Process environment requires procfs(5)");
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_pcpu = getpcpu(next_KINFO);
578 if (sortby == SORTMEM)
579 next_KINFO->ki_memsize = kp->ki_tsize +
580 kp->ki_dsize + kp->ki_ssize;
582 saveuser(next_KINFO);
583 dynsizevars(next_KINFO);
600 qsort(kinfo, nkept, sizeof(KINFO), pscomp);
602 * For each process, call each variable output function.
604 for (i = lineno = 0; i < nkept; i++) {
605 STAILQ_FOREACH(vent, &varlist, next_ve) {
606 (vent->var->oproc)(&kinfo[i], vent);
607 if (STAILQ_NEXT(vent, next_ve) != NULL)
611 if (prtheader && lineno++ == prtheader - 4) {
619 free_list(&pgrplist);
620 free_list(&ruidlist);
621 free_list(&sesslist);
629 addelem_gid(struct listinfo *inf, const char *elem)
632 const char *nameorID;
636 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
638 warnx("Invalid (zero-length) %s name", inf->lname);
640 warnx("%s name too long: %s", inf->lname, elem);
642 return (0); /* Do not add this value. */
646 * SUSv3 states that `ps -G grouplist' should match "real-group
647 * ID numbers", and does not mention group-names. I do want to
648 * also support group-names, so this tries for a group-id first,
649 * and only tries for a name if that doesn't work. This is the
650 * opposite order of what is done in addelem_uid(), but in
651 * practice the order would only matter for group-names which
657 bigtemp = strtoul(elem, &endp, 10);
658 if (errno == 0 && *endp == '\0' && bigtemp <= GID_MAX) {
659 nameorID = "name or ID matches";
660 grp = getgrgid((gid_t)bigtemp);
663 grp = getgrnam(elem);
665 warnx("No %s %s '%s'", inf->lname, nameorID, elem);
669 if (inf->count >= inf->maxcount)
671 inf->l.gids[(inf->count)++] = grp->gr_gid;
675 #define BSD_PID_MAX 99999 /* Copy of PID_MAX from sys/proc.h. */
677 addelem_pid(struct listinfo *inf, const char *elem)
683 warnx("Invalid (zero-length) process id");
685 return (0); /* Do not add this value. */
689 tempid = strtol(elem, &endp, 10);
690 if (*endp != '\0' || tempid < 0 || elem == endp) {
691 warnx("Invalid %s: %s", inf->lname, elem);
693 } else if (errno != 0 || tempid > BSD_PID_MAX) {
694 warnx("%s too large: %s", inf->lname, elem);
697 if (errno == ERANGE) {
701 if (inf->count >= inf->maxcount)
703 inf->l.pids[(inf->count)++] = tempid;
709 * The user can specify a device via one of three formats:
710 * 1) fully qualified, e.g.: /dev/ttyp0 /dev/console /dev/pts/0
711 * 2) missing "/dev", e.g.: ttyp0 console pts/0
712 * 3) two-letters, e.g.: p0 co 0
713 * (matching letters that would be seen in the "TT" column)
716 addelem_tty(struct listinfo *inf, const char *elem)
720 char pathbuf[PATH_MAX], pathbuf2[PATH_MAX], pathbuf3[PATH_MAX];
730 if (strcmp(elem, "co") == 0) {
731 ttypath = _PATH_CONSOLE;
736 strlcpy(pathbuf, _PATH_DEV, sizeof(pathbuf));
737 strlcat(pathbuf, elem, sizeof(pathbuf));
739 if (strncmp(pathbuf, _PATH_TTY, strlen(_PATH_TTY)) == 0)
741 if (strncmp(pathbuf, _PATH_PTS, strlen(_PATH_PTS)) == 0)
743 if (strcmp(pathbuf, _PATH_CONSOLE) == 0)
745 /* Check to see if /dev/tty${elem} exists */
746 strlcpy(pathbuf2, _PATH_TTY, sizeof(pathbuf2));
747 strlcat(pathbuf2, elem, sizeof(pathbuf2));
748 if (stat(pathbuf2, &sb) == 0 && S_ISCHR(sb.st_mode)) {
749 /* No need to repeat stat() && S_ISCHR() checks */
753 /* Check to see if /dev/pts/${elem} exists */
754 strlcpy(pathbuf3, _PATH_PTS, sizeof(pathbuf3));
755 strlcat(pathbuf3, elem, sizeof(pathbuf3));
756 if (stat(pathbuf3, &sb) == 0 && S_ISCHR(sb.st_mode)) {
757 /* No need to repeat stat() && S_ISCHR() checks */
764 if (stat(ttypath, &sb) == -1) {
765 if (pathbuf3[0] != '\0')
766 warn("%s, %s, and %s", pathbuf3, pathbuf2,
773 if (!S_ISCHR(sb.st_mode)) {
774 if (pathbuf3[0] != '\0')
775 warnx("%s, %s, and %s: Not a terminal",
776 pathbuf3, pathbuf2, ttypath);
778 warnx("%s: Not a terminal", ttypath);
783 if (inf->count >= inf->maxcount)
785 inf->l.ttys[(inf->count)++] = sb.st_rdev;
790 addelem_uid(struct listinfo *inf, const char *elem)
796 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
798 warnx("Invalid (zero-length) %s name", inf->lname);
800 warnx("%s name too long: %s", inf->lname, elem);
802 return (0); /* Do not add this value. */
805 pwd = getpwnam(elem);
808 bigtemp = strtoul(elem, &endp, 10);
809 if (errno != 0 || *endp != '\0' || bigtemp > UID_MAX)
810 warnx("No %s named '%s'", inf->lname, elem);
812 /* The string is all digits, so it might be a userID. */
813 pwd = getpwuid((uid_t)bigtemp);
815 warnx("No %s name or ID matches '%s'",
821 * These used to be treated as minor warnings (and the
822 * option was simply ignored), but now they are fatal
823 * errors (and the command will be aborted).
828 if (inf->count >= inf->maxcount)
830 inf->l.uids[(inf->count)++] = pwd->pw_uid;
835 add_list(struct listinfo *inf, const char *argp)
840 char elemcopy[PATH_MAX];
843 inf->addelem(inf, elemcopy);
844 while (*argp != '\0') {
845 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
850 if (strchr(T_SEP, *argp) == NULL) {
851 endp = elemcopy + sizeof(elemcopy) - 1;
852 while (*argp != '\0' && cp <= endp &&
853 strchr(W_SEP T_SEP, *argp) == NULL)
861 * Add this single element to the given list.
863 inf->addelem(inf, elemcopy);
866 * The string is too long to copy. Find the end
867 * of the string to print out the warning message.
869 while (*argp != '\0' && strchr(W_SEP T_SEP,
872 warnx("Value too long: %.*s", (int)(argp - savep),
877 * Skip over any number of trailing whitespace characters,
878 * but only one (at most) trailing element-terminating
881 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
883 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) {
885 /* Catch case where string ended with a comma. */
887 inf->addelem(inf, argp);
893 expand_list(struct listinfo *inf)
898 newmax = (inf->maxcount + 1) << 1;
899 newlist = realloc(inf->l.ptr, newmax * inf->elemsize);
900 if (newlist == NULL) {
902 errx(1, "realloc to %d %ss failed", newmax, inf->lname);
904 inf->maxcount = newmax;
905 inf->l.ptr = newlist;
911 free_list(struct listinfo *inf)
914 inf->count = inf->elemsize = inf->maxcount = 0;
915 if (inf->l.ptr != NULL)
923 init_list(struct listinfo *inf, addelem_rtn artn, int elemsize,
927 inf->count = inf->maxcount = 0;
928 inf->elemsize = elemsize;
935 find_varentry(VAR *v)
939 STAILQ_FOREACH(vent, &varlist, next_ve) {
940 if (strcmp(vent->var->name, v->name) == 0)
952 STAILQ_FOREACH(vent, &varlist, next_ve) {
954 if (v->flag & DSIZ) {
955 v->dwidth = v->width;
966 dynsizevars(KINFO *ki)
972 STAILQ_FOREACH(vent, &varlist, next_ve) {
974 if (!(v->flag & DSIZ))
979 if (v->width > v->dwidth)
980 v->width = v->dwidth;
991 STAILQ_FOREACH(vent, &varlist, next_ve) {
993 i = strlen(vent->header);
996 totwidth += v->width + 1; /* +1 for space */
1002 fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki,
1003 char *comm, int maxlen)
1007 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, maxlen);
1011 #define UREADOK(ki) (forceuread || (ki->ki_p->ki_flag & P_INMEM))
1017 if (ki->ki_p->ki_flag & P_INMEM) {
1019 * The u-area might be swapped out, and we can't get
1020 * at it because we have a crashdump and no swap.
1021 * If it's here fill in these fields, otherwise, just
1028 * save arguments if needed
1031 if (ki->ki_p->ki_stat == SZOMB)
1032 ki->ki_args = strdup("<defunct>");
1033 else if (UREADOK(ki) || (ki->ki_p->ki_args != NULL))
1034 ki->ki_args = strdup(fmt(kvm_getargv, ki,
1035 ki->ki_p->ki_comm, MAXCOMLEN));
1037 asprintf(&ki->ki_args, "(%s)", ki->ki_p->ki_comm);
1038 if (ki->ki_args == NULL)
1039 errx(1, "malloc failed");
1045 ki->ki_env = strdup(fmt(kvm_getenvv, ki,
1048 ki->ki_env = strdup("()");
1049 if (ki->ki_env == NULL)
1050 errx(1, "malloc failed");
1056 /* A macro used to improve the readability of pscomp(). */
1057 #define DIFF_RETURN(a, b, field) do { \
1058 if ((a)->field != (b)->field) \
1059 return (((a)->field < (b)->field) ? -1 : 1); \
1063 pscomp(const void *a, const void *b)
1065 const KINFO *ka, *kb;
1069 /* SORTCPU and SORTMEM are sorted in descending order. */
1070 if (sortby == SORTCPU)
1071 DIFF_RETURN(kb, ka, ki_pcpu);
1072 if (sortby == SORTMEM)
1073 DIFF_RETURN(kb, ka, ki_memsize);
1075 * TTY's are sorted in ascending order, except that all NODEV
1076 * processes come before all processes with a device.
1078 if (ka->ki_p->ki_tdev != kb->ki_p->ki_tdev) {
1079 if (ka->ki_p->ki_tdev == NODEV)
1081 if (kb->ki_p->ki_tdev == NODEV)
1083 DIFF_RETURN(ka, kb, ki_p->ki_tdev);
1086 /* PID's and TID's (threads) are sorted in ascending order. */
1087 DIFF_RETURN(ka, kb, ki_p->ki_pid);
1088 DIFF_RETURN(ka, kb, ki_p->ki_tid);
1094 * ICK (all for getopt), would rather hide the ugliness
1095 * here than taint the main code.
1100 * The old convention that 't' with no trailing tty arg means the users
1101 * tty, is only supported if argv[1] doesn't begin with a '-'. This same
1102 * feature is available with the option 'T', which takes no argument.
1105 kludge_oldps_options(const char *optlist, char *origval, const char *nextarg)
1108 char *argp, *cp, *newopts, *ns, *optp, *pidp;
1111 * See if the original value includes any option which takes an
1112 * argument (and will thus use up the remainder of the string).
1115 if (optlist != NULL) {
1116 for (cp = origval; *cp != '\0'; cp++) {
1117 optp = strchr(optlist, *cp);
1118 if ((optp != NULL) && *(optp + 1) == ':') {
1124 if (argp != NULL && *origval == '-')
1128 * if last letter is a 't' flag with no argument (in the context
1129 * of the oldps options -- option string NOT starting with a '-' --
1130 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)).
1132 * However, if a flag accepting a string argument is found earlier
1133 * in the option string (including a possible `t' flag), then the
1134 * remainder of the string must be the argument to that flag; so
1135 * do not modify that argument. Note that a trailing `t' would
1136 * cause argp to be set, if argp was not already set by some
1139 len = strlen(origval);
1140 cp = origval + len - 1;
1142 if (*cp == 't' && *origval != '-' && cp == argp) {
1143 if (nextarg == NULL || *nextarg == '-' || isdigitch(*nextarg))
1145 } else if (argp == NULL) {
1147 * The original value did not include any option which takes
1148 * an argument (and that would include `p' and `t'), so check
1149 * the value for trailing number, or comma-separated list of
1150 * numbers, which we will treat as a pid request.
1152 if (isdigitch(*cp)) {
1153 while (cp >= origval && (*cp == ',' || isdigitch(*cp)))
1160 * If nothing needs to be added to the string, then return
1161 * the "original" (although possibly modified) value.
1163 if (*origval == '-' && pidp == NULL)
1167 * Create a copy of the string to add '-' and/or 'p' to the
1170 if ((newopts = ns = malloc(len + 3)) == NULL)
1171 errx(1, "malloc failed");
1173 if (*origval != '-')
1174 *ns++ = '-'; /* add option flag */
1177 strcpy(ns, origval);
1180 * Copy everything before the pid string, add the `p',
1181 * and then copy the pid string.
1183 len = pidp - origval;
1184 memcpy(ns, origval, len);
1198 if (statfs("/proc", &mnt) < 0)
1200 if (strcmp(mnt.f_fstypename, "procfs") != 0)
1208 #define SINGLE_OPTS "[-aCce" OPT_LAZY_f "HhjlmrSTuvwXxZ]"
1210 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
1211 "usage: ps " SINGLE_OPTS " [-O fmt | -o fmt] [-G gid[,gid...]]",
1212 " [-M core] [-N system]",
1213 " [-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]",