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. */
103 int showthreads; /* will threads be shown? */
105 struct velisthead varlist = STAILQ_HEAD_INITIALIZER(varlist);
107 static int forceuread = DEF_UREAD; /* Do extra work to get u-area. */
110 static int needcomm; /* -o "command" */
111 static int needenv; /* -e */
112 static int needuser; /* -o "user" */
113 static int optfatal; /* Fatal error parsing some list-option. */
115 static enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT;
118 typedef int addelem_rtn(struct listinfo *_inf, const char *_elem);
124 addelem_rtn *addelem;
135 static int check_procfs(void);
136 static int addelem_gid(struct listinfo *, const char *);
137 static int addelem_pid(struct listinfo *, const char *);
138 static int addelem_tty(struct listinfo *, const char *);
139 static int addelem_uid(struct listinfo *, const char *);
140 static void add_list(struct listinfo *, const char *);
141 static void dynsizevars(KINFO *);
142 static void *expand_list(struct listinfo *);
144 fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int),
145 KINFO *, char *, int);
146 static void free_list(struct listinfo *);
147 static void init_list(struct listinfo *, addelem_rtn, int, const char *);
148 static char *kludge_oldps_options(const char *, char *, const char *);
149 static int pscomp(const void *, const void *);
150 static void saveuser(KINFO *);
151 static void scanvars(void);
152 static void sizevars(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 "AaCce" 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;
177 const char *nlistf, *memf;
179 int all, ch, elem, flag, _fmt, i, lineno;
180 int nentries, nkept, nselectors;
181 int prtheader, wflag, what, xkeep, xkeep_implied;
182 char errbuf[_POSIX2_LINE_MAX];
184 (void) setlocale(LC_ALL, "");
185 time(&now); /* Used by routines in print.c. */
187 if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0')
188 termwidth = atoi(cols);
189 else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
190 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
191 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) ||
195 termwidth = ws.ws_col - 1;
198 * Hide a number of option-processing kludges in a separate routine,
199 * to support some historical BSD behaviors, such as `ps axu'.
202 argv[1] = kludge_oldps_options(PS_ARGS, argv[1], argv[2]);
204 all = _fmt = nselectors = optfatal = 0;
205 prtheader = showthreads = wflag = xkeep_implied = 0;
206 xkeep = -1; /* Neither -x nor -X. */
207 init_list(&gidlist, addelem_gid, sizeof(gid_t), "group");
208 init_list(&pgrplist, addelem_pid, sizeof(pid_t), "process group");
209 init_list(&pidlist, addelem_pid, sizeof(pid_t), "process id");
210 init_list(&ruidlist, addelem_uid, sizeof(uid_t), "ruser");
211 init_list(&sesslist, addelem_pid, sizeof(pid_t), "session id");
212 init_list(&ttylist, addelem_tty, sizeof(dev_t), "tty");
213 init_list(&uidlist, addelem_uid, sizeof(uid_t), "user");
214 memf = nlistf = _PATH_DEVNULL;
215 while ((ch = getopt(argc, argv, PS_ARGS)) != -1)
219 * Exactly the same as `-ax'. This has been
220 * added for compatability with SUSv3, but for
221 * now it will not be described in the man page.
236 case 'e': /* XXX set ufmt */
241 if (getuid() == 0 || getgid() == 0)
246 add_list(&gidlist, optarg);
253 * XXX - This SUSv3 behavior is still under debate
254 * since it conflicts with the (undocumented)
255 * `-g' option. So we skip it for now.
257 add_list(&pgrplist, optarg);
262 /* The historical BSD-ish (from SunOS) behavior. */
266 showthreads = KERN_PROC_INC_THREAD;
269 prtheader = ws.ws_row > 5 ? ws.ws_row : 22;
297 o1[0] = o2[0] = '\0';
305 add_list(&pidlist, optarg);
307 * Note: `-p' does not *set* xkeep, but any values
308 * from pidlist are checked before xkeep is. That
309 * way they are always matched, even if the user
317 * XXX - This un-standard option is still under
318 * debate. This is what SUSv3 defines as
319 * the `-U' option, and while it would be
320 * nice to have, it could cause even more
321 * confusion to implement it as `-R'.
323 add_list(&ruidlist, optarg);
337 * XXX - This non-standard option is still under
338 * debate. This *is* supported on Solaris,
339 * Linux, and IRIX, but conflicts with `-s'
340 * on NetBSD and maybe some older BSD's.
342 add_list(&sesslist, optarg);
348 if ((optarg = ttyname(STDIN_FILENO)) == NULL)
349 errx(1, "stdin: not a terminal");
352 add_list(&ttylist, optarg);
357 /* This is what SUSv3 defines as the `-u' option. */
358 add_list(&uidlist, optarg);
376 termwidth = UNLIMITED;
377 else if (termwidth < 131)
383 * Note that `-X' and `-x' are not standard "selector"
384 * options. For most selector-options, we check *all*
385 * processes to see if any are matched by the given
386 * value(s). After we have a set of all the matched
387 * processes, then `-X' and `-x' govern whether we
388 * modify that *matched* set for processes which do
389 * not have a controlling terminal. `-X' causes
390 * those processes to be deleted from the matched
391 * set, while `-x' causes them to be kept.
410 * If the user specified ps -e then they want a copy of the process
411 * environment kvm_getenvv(3) attempts to open /proc/<pid>/mem.
412 * Check to make sure that procfs is mounted on /proc, otherwise
413 * print a warning informing the user that output will be incomplete.
415 if (needenv == 1 && check_procfs() == 0)
416 warnx("Process environment requires procfs(5)");
418 * If there arguments after processing all the options, attempt
419 * to treat them as a list of process ids.
422 if (!isdigitch(**argv))
424 add_list(&pidlist, *argv);
428 fprintf(stderr, "%s: illegal argument: %s\n",
429 getprogname(), *argv);
433 exit(1); /* Error messages already printed. */
434 if (xkeep < 0) /* Neither -X nor -x was specified. */
435 xkeep = xkeep_implied;
437 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
439 errx(1, "%s", errbuf);
444 if (nselectors == 0) {
445 uidlist.l.ptr = malloc(sizeof(uid_t));
446 if (uidlist.l.ptr == NULL)
447 errx(1, "malloc failed");
449 uidlist.count = uidlist.maxcount = 1;
450 *uidlist.l.uids = getuid();
454 * scan requested variables, noting what structures are needed,
455 * and adjusting header widths as appropriate.
460 * Get process list. If the user requested just one selector-
461 * option, then kvm_getprocs can be asked to return just those
462 * processes. Otherwise, have it return all processes, and
463 * then this routine will search that full list and select the
464 * processes which match any of the user's selector-options.
466 what = showthreads != 0 ? KERN_PROC_ALL : KERN_PROC_PROC;
468 if (nselectors == 1) {
469 if (gidlist.count == 1) {
470 what = KERN_PROC_RGID | showthreads;
471 flag = *gidlist.l.gids;
473 } else if (pgrplist.count == 1) {
474 what = KERN_PROC_PGRP | showthreads;
475 flag = *pgrplist.l.pids;
477 } else if (pidlist.count == 1) {
478 what = KERN_PROC_PID | showthreads;
479 flag = *pidlist.l.pids;
481 } else if (ruidlist.count == 1) {
482 what = KERN_PROC_RUID | showthreads;
483 flag = *ruidlist.l.uids;
485 } else if (sesslist.count == 1) {
486 what = KERN_PROC_SESSION | showthreads;
487 flag = *sesslist.l.pids;
489 } else if (ttylist.count == 1) {
490 what = KERN_PROC_TTY | showthreads;
491 flag = *ttylist.l.ttys;
493 } else if (uidlist.count == 1) {
494 what = KERN_PROC_UID | showthreads;
495 flag = *uidlist.l.uids;
498 /* No need for this routine to select processes. */
507 kp = kvm_getprocs(kd, what, flag, &nentries);
508 if ((kp == NULL && nentries > 0) || (kp != NULL && nentries < 0))
509 errx(1, "%s", kvm_geterr(kd));
512 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL)
513 errx(1, "malloc failed");
514 for (i = nentries; --i >= 0; ++kp) {
516 * If the user specified multiple selection-criteria,
517 * then keep any process matched by the inclusive OR
518 * of all the selection-criteria given.
520 if (pidlist.count > 0) {
521 for (elem = 0; elem < pidlist.count; elem++)
522 if (kp->ki_pid == pidlist.l.pids[elem])
526 * Note that we had to process pidlist before
527 * filtering out processes which do not have
528 * a controlling terminal.
531 if ((kp->ki_tdev == NODEV ||
532 (kp->ki_flag & P_CONTROLT) == 0))
537 if (gidlist.count > 0) {
538 for (elem = 0; elem < gidlist.count; elem++)
539 if (kp->ki_rgid == gidlist.l.gids[elem])
542 if (pgrplist.count > 0) {
543 for (elem = 0; elem < pgrplist.count; elem++)
545 pgrplist.l.pids[elem])
548 if (ruidlist.count > 0) {
549 for (elem = 0; elem < ruidlist.count; elem++)
551 ruidlist.l.uids[elem])
554 if (sesslist.count > 0) {
555 for (elem = 0; elem < sesslist.count; elem++)
556 if (kp->ki_sid == sesslist.l.pids[elem])
559 if (ttylist.count > 0) {
560 for (elem = 0; elem < ttylist.count; elem++)
561 if (kp->ki_tdev == ttylist.l.ttys[elem])
564 if (uidlist.count > 0) {
565 for (elem = 0; elem < uidlist.count; elem++)
566 if (kp->ki_uid == uidlist.l.uids[elem])
570 * This process did not match any of the user's
571 * selector-options, so skip the process.
576 next_KINFO = &kinfo[nkept];
577 next_KINFO->ki_p = kp;
578 next_KINFO->ki_pcpu = getpcpu(next_KINFO);
579 if (sortby == SORTMEM)
580 next_KINFO->ki_memsize = kp->ki_tsize +
581 kp->ki_dsize + kp->ki_ssize;
583 saveuser(next_KINFO);
584 dynsizevars(next_KINFO);
601 qsort(kinfo, nkept, sizeof(KINFO), pscomp);
603 * For each process, call each variable output function.
605 for (i = lineno = 0; i < nkept; i++) {
606 STAILQ_FOREACH(vent, &varlist, next_ve) {
607 (vent->var->oproc)(&kinfo[i], vent);
608 if (STAILQ_NEXT(vent, next_ve) != NULL)
612 if (prtheader && lineno++ == prtheader - 4) {
620 free_list(&pgrplist);
621 free_list(&ruidlist);
622 free_list(&sesslist);
630 addelem_gid(struct listinfo *inf, const char *elem)
633 const char *nameorID;
637 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
639 warnx("Invalid (zero-length) %s name", inf->lname);
641 warnx("%s name too long: %s", inf->lname, elem);
643 return (0); /* Do not add this value. */
647 * SUSv3 states that `ps -G grouplist' should match "real-group
648 * ID numbers", and does not mention group-names. I do want to
649 * also support group-names, so this tries for a group-id first,
650 * and only tries for a name if that doesn't work. This is the
651 * opposite order of what is done in addelem_uid(), but in
652 * practice the order would only matter for group-names which
658 bigtemp = strtoul(elem, &endp, 10);
659 if (errno == 0 && *endp == '\0' && bigtemp <= GID_MAX) {
660 nameorID = "name or ID matches";
661 grp = getgrgid((gid_t)bigtemp);
664 grp = getgrnam(elem);
666 warnx("No %s %s '%s'", inf->lname, nameorID, elem);
670 if (inf->count >= inf->maxcount)
672 inf->l.gids[(inf->count)++] = grp->gr_gid;
676 #define BSD_PID_MAX 99999 /* Copy of PID_MAX from sys/proc.h. */
678 addelem_pid(struct listinfo *inf, const char *elem)
684 warnx("Invalid (zero-length) process id");
686 return (0); /* Do not add this value. */
690 tempid = strtol(elem, &endp, 10);
691 if (*endp != '\0' || tempid < 0 || elem == endp) {
692 warnx("Invalid %s: %s", inf->lname, elem);
694 } else if (errno != 0 || tempid > BSD_PID_MAX) {
695 warnx("%s too large: %s", inf->lname, elem);
698 if (errno == ERANGE) {
702 if (inf->count >= inf->maxcount)
704 inf->l.pids[(inf->count)++] = tempid;
710 * The user can specify a device via one of three formats:
711 * 1) fully qualified, e.g.: /dev/ttyp0 /dev/console /dev/pts/0
712 * 2) missing "/dev", e.g.: ttyp0 console pts/0
713 * 3) two-letters, e.g.: p0 co 0
714 * (matching letters that would be seen in the "TT" column)
717 addelem_tty(struct listinfo *inf, const char *elem)
721 char pathbuf[PATH_MAX], pathbuf2[PATH_MAX], pathbuf3[PATH_MAX];
731 if (strcmp(elem, "co") == 0) {
732 ttypath = _PATH_CONSOLE;
737 strlcpy(pathbuf, _PATH_DEV, sizeof(pathbuf));
738 strlcat(pathbuf, elem, sizeof(pathbuf));
740 if (strncmp(pathbuf, _PATH_TTY, strlen(_PATH_TTY)) == 0)
742 if (strncmp(pathbuf, _PATH_PTS, strlen(_PATH_PTS)) == 0)
744 if (strcmp(pathbuf, _PATH_CONSOLE) == 0)
746 /* Check to see if /dev/tty${elem} exists */
747 strlcpy(pathbuf2, _PATH_TTY, sizeof(pathbuf2));
748 strlcat(pathbuf2, elem, sizeof(pathbuf2));
749 if (stat(pathbuf2, &sb) == 0 && S_ISCHR(sb.st_mode)) {
750 /* No need to repeat stat() && S_ISCHR() checks */
754 /* Check to see if /dev/pts/${elem} exists */
755 strlcpy(pathbuf3, _PATH_PTS, sizeof(pathbuf3));
756 strlcat(pathbuf3, elem, sizeof(pathbuf3));
757 if (stat(pathbuf3, &sb) == 0 && S_ISCHR(sb.st_mode)) {
758 /* No need to repeat stat() && S_ISCHR() checks */
765 if (stat(ttypath, &sb) == -1) {
766 if (pathbuf3[0] != '\0')
767 warn("%s, %s, and %s", pathbuf3, pathbuf2,
774 if (!S_ISCHR(sb.st_mode)) {
775 if (pathbuf3[0] != '\0')
776 warnx("%s, %s, and %s: Not a terminal",
777 pathbuf3, pathbuf2, ttypath);
779 warnx("%s: Not a terminal", ttypath);
784 if (inf->count >= inf->maxcount)
786 inf->l.ttys[(inf->count)++] = sb.st_rdev;
791 addelem_uid(struct listinfo *inf, const char *elem)
797 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) {
799 warnx("Invalid (zero-length) %s name", inf->lname);
801 warnx("%s name too long: %s", inf->lname, elem);
803 return (0); /* Do not add this value. */
806 pwd = getpwnam(elem);
809 bigtemp = strtoul(elem, &endp, 10);
810 if (errno != 0 || *endp != '\0' || bigtemp > UID_MAX)
811 warnx("No %s named '%s'", inf->lname, elem);
813 /* The string is all digits, so it might be a userID. */
814 pwd = getpwuid((uid_t)bigtemp);
816 warnx("No %s name or ID matches '%s'",
822 * These used to be treated as minor warnings (and the
823 * option was simply ignored), but now they are fatal
824 * errors (and the command will be aborted).
829 if (inf->count >= inf->maxcount)
831 inf->l.uids[(inf->count)++] = pwd->pw_uid;
836 add_list(struct listinfo *inf, const char *argp)
841 char elemcopy[PATH_MAX];
844 inf->addelem(inf, elemcopy);
845 while (*argp != '\0') {
846 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
851 if (strchr(T_SEP, *argp) == NULL) {
852 endp = elemcopy + sizeof(elemcopy) - 1;
853 while (*argp != '\0' && cp <= endp &&
854 strchr(W_SEP T_SEP, *argp) == NULL)
862 * Add this single element to the given list.
864 inf->addelem(inf, elemcopy);
867 * The string is too long to copy. Find the end
868 * of the string to print out the warning message.
870 while (*argp != '\0' && strchr(W_SEP T_SEP,
873 warnx("Value too long: %.*s", (int)(argp - savep),
878 * Skip over any number of trailing whitespace characters,
879 * but only one (at most) trailing element-terminating
882 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL)
884 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) {
886 /* Catch case where string ended with a comma. */
888 inf->addelem(inf, argp);
894 expand_list(struct listinfo *inf)
899 newmax = (inf->maxcount + 1) << 1;
900 newlist = realloc(inf->l.ptr, newmax * inf->elemsize);
901 if (newlist == NULL) {
903 errx(1, "realloc to %d %ss failed", newmax, inf->lname);
905 inf->maxcount = newmax;
906 inf->l.ptr = newlist;
912 free_list(struct listinfo *inf)
915 inf->count = inf->elemsize = inf->maxcount = 0;
916 if (inf->l.ptr != NULL)
924 init_list(struct listinfo *inf, addelem_rtn artn, int elemsize,
928 inf->count = inf->maxcount = 0;
929 inf->elemsize = elemsize;
936 find_varentry(VAR *v)
940 STAILQ_FOREACH(vent, &varlist, next_ve) {
941 if (strcmp(vent->var->name, v->name) == 0)
953 STAILQ_FOREACH(vent, &varlist, next_ve) {
955 if (v->flag & DSIZ) {
956 v->dwidth = v->width;
967 dynsizevars(KINFO *ki)
973 STAILQ_FOREACH(vent, &varlist, next_ve) {
975 if (!(v->flag & DSIZ))
980 if (v->width > v->dwidth)
981 v->width = v->dwidth;
992 STAILQ_FOREACH(vent, &varlist, next_ve) {
994 i = strlen(vent->header);
997 totwidth += v->width + 1; /* +1 for space */
1003 fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki,
1004 char *comm, int maxlen)
1008 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, maxlen);
1012 #define UREADOK(ki) (forceuread || (ki->ki_p->ki_flag & P_INMEM))
1018 if (ki->ki_p->ki_flag & P_INMEM) {
1020 * The u-area might be swapped out, and we can't get
1021 * at it because we have a crashdump and no swap.
1022 * If it's here fill in these fields, otherwise, just
1029 * save arguments if needed
1032 if (ki->ki_p->ki_stat == SZOMB)
1033 ki->ki_args = strdup("<defunct>");
1034 else if (UREADOK(ki) || (ki->ki_p->ki_args != NULL))
1035 ki->ki_args = strdup(fmt(kvm_getargv, ki,
1036 ki->ki_p->ki_comm, MAXCOMLEN));
1038 asprintf(&ki->ki_args, "(%s)", ki->ki_p->ki_comm);
1039 if (ki->ki_args == NULL)
1040 errx(1, "malloc failed");
1046 ki->ki_env = strdup(fmt(kvm_getenvv, ki,
1049 ki->ki_env = strdup("()");
1050 if (ki->ki_env == NULL)
1051 errx(1, "malloc failed");
1057 /* A macro used to improve the readability of pscomp(). */
1058 #define DIFF_RETURN(a, b, field) do { \
1059 if ((a)->field != (b)->field) \
1060 return (((a)->field < (b)->field) ? -1 : 1); \
1064 pscomp(const void *a, const void *b)
1066 const KINFO *ka, *kb;
1070 /* SORTCPU and SORTMEM are sorted in descending order. */
1071 if (sortby == SORTCPU)
1072 DIFF_RETURN(kb, ka, ki_pcpu);
1073 if (sortby == SORTMEM)
1074 DIFF_RETURN(kb, ka, ki_memsize);
1076 * TTY's are sorted in ascending order, except that all NODEV
1077 * processes come before all processes with a device.
1079 if (ka->ki_p->ki_tdev != kb->ki_p->ki_tdev) {
1080 if (ka->ki_p->ki_tdev == NODEV)
1082 if (kb->ki_p->ki_tdev == NODEV)
1084 DIFF_RETURN(ka, kb, ki_p->ki_tdev);
1087 /* PID's and TID's (threads) are sorted in ascending order. */
1088 DIFF_RETURN(ka, kb, ki_p->ki_pid);
1089 DIFF_RETURN(ka, kb, ki_p->ki_tid);
1095 * ICK (all for getopt), would rather hide the ugliness
1096 * here than taint the main code.
1101 * The old convention that 't' with no trailing tty arg means the users
1102 * tty, is only supported if argv[1] doesn't begin with a '-'. This same
1103 * feature is available with the option 'T', which takes no argument.
1106 kludge_oldps_options(const char *optlist, char *origval, const char *nextarg)
1109 char *argp, *cp, *newopts, *ns, *optp, *pidp;
1112 * See if the original value includes any option which takes an
1113 * argument (and will thus use up the remainder of the string).
1116 if (optlist != NULL) {
1117 for (cp = origval; *cp != '\0'; cp++) {
1118 optp = strchr(optlist, *cp);
1119 if ((optp != NULL) && *(optp + 1) == ':') {
1125 if (argp != NULL && *origval == '-')
1129 * if last letter is a 't' flag with no argument (in the context
1130 * of the oldps options -- option string NOT starting with a '-' --
1131 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)).
1133 * However, if a flag accepting a string argument is found earlier
1134 * in the option string (including a possible `t' flag), then the
1135 * remainder of the string must be the argument to that flag; so
1136 * do not modify that argument. Note that a trailing `t' would
1137 * cause argp to be set, if argp was not already set by some
1140 len = strlen(origval);
1141 cp = origval + len - 1;
1143 if (*cp == 't' && *origval != '-' && cp == argp) {
1144 if (nextarg == NULL || *nextarg == '-' || isdigitch(*nextarg))
1146 } else if (argp == NULL) {
1148 * The original value did not include any option which takes
1149 * an argument (and that would include `p' and `t'), so check
1150 * the value for trailing number, or comma-separated list of
1151 * numbers, which we will treat as a pid request.
1153 if (isdigitch(*cp)) {
1154 while (cp >= origval && (*cp == ',' || isdigitch(*cp)))
1161 * If nothing needs to be added to the string, then return
1162 * the "original" (although possibly modified) value.
1164 if (*origval == '-' && pidp == NULL)
1168 * Create a copy of the string to add '-' and/or 'p' to the
1171 if ((newopts = ns = malloc(len + 3)) == NULL)
1172 errx(1, "malloc failed");
1174 if (*origval != '-')
1175 *ns++ = '-'; /* add option flag */
1178 strcpy(ns, origval);
1181 * Copy everything before the pid string, add the `p',
1182 * and then copy the pid string.
1184 len = pidp - origval;
1185 memcpy(ns, origval, len);
1199 if (statfs("/proc", &mnt) < 0)
1201 if (strcmp(mnt.f_fstypename, "procfs") != 0)
1209 #define SINGLE_OPTS "[-aCce" OPT_LAZY_f "HhjlmrSTuvwXxZ]"
1211 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
1212 "usage: ps " SINGLE_OPTS " [-O fmt | -o fmt] [-G gid[,gid...]]",
1213 " [-M core] [-N system]",
1214 " [-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]",