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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1990, 1993, 1994 The Regents of the University of California. All rights reserved.
34 * @(#)ps.c 8.4 (Berkeley) 4/2/94
35 * $FreeBSD: src/bin/ps/ps.c,v 1.30.2.6 2002/07/04 08:30:37 sobomax Exp $
36 * $DragonFly: src/bin/ps/ps.c,v 1.4 2003/09/21 04:24:47 drhodus Exp $
39 #include <sys/param.h>
42 #include <sys/resource.h>
44 #include <sys/ioctl.h>
45 #include <sys/sysctl.h>
65 #define SEP ", \t" /* username separators */
68 struct varent *vhead, *vtail;
70 int eval; /* exit value */
73 int sumrusage; /* -S */
74 int termwidth; /* width of screen (0 == infinity) */
75 int totwidth; /* calculated width of requested variables */
77 static int needuser, needcomm, needenv;
79 static int forceuread=0;
80 #define PS_ARGS "aCcefghjLlM:mN:O:o:p:rSTt:U:uvwx"
82 static int forceuread=1;
83 #define PS_ARGS "aCceghjLlM:mN:O:o:p:rSTt:U:uvwx"
86 enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT;
88 static char *fmt (char **(*)(kvm_t *, const struct kinfo_proc *, int),
89 KINFO *, char *, int);
90 static char *kludge_oldps_options (char *);
91 static int pscomp (const void *, const void *);
92 static void saveuser (KINFO *);
93 static void scanvars (void);
94 static void dynsizevars (KINFO *);
95 static void sizevars (void);
96 static void usage (void);
97 static uid_t *getuids(const char *, int *);
99 char dfmt[] = "pid tt state time command";
100 char jfmt[] = "user pid ppid pgid sess jobc state tt time command";
101 char lfmt[] = "uid pid ppid cpu pri nice vsz rss wchan state tt time command";
103 char o2[] = "tt state time command";
104 char ufmt[] = "user pid %cpu %mem vsz rss tt state start time command";
105 char vfmt[] = "pid state time sl re pagein vsz rss lim tsiz %cpu %mem command";
114 struct kinfo_proc *kp;
120 int all, ch, flag, i, fmt, lineno, nentries, nocludge, dropgid;
121 int prtheader, wflag, what, xflg, uid, nuids;
122 char *cp, *nlistf, *memf, errbuf[_POSIX2_LINE_MAX];
124 (void) setlocale(LC_ALL, "");
126 if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
127 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
128 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) ||
132 termwidth = ws.ws_col - 1;
135 * Don't apply a kludge if the first argument is an option taking an
140 if (argv[1][0] == '-') {
141 for (cp = PS_ARGS; *cp != '\0'; cp++) {
144 if (*(cp - 1) == argv[1][1]) {
151 argv[1] = kludge_oldps_options(argv[1]);
154 all = fmt = prtheader = wflag = xflg = 0;
160 memf = nlistf = _PATH_DEVNULL;
161 while ((ch = getopt(argc, argv, PS_ARGS)) != -1)
172 case 'e': /* XXX set ufmt */
178 prtheader = ws.ws_row > 5 ? ws.ws_row : 22;
208 o1[0] = o2[0] = '\0';
217 if (getuid() == 0 || getgid() == 0)
232 if ((optarg = ttyname(STDIN_FILENO)) == NULL)
233 errx(1, "stdin: not a terminal");
237 char *ttypath, pathbuf[PATH_MAX];
239 if (strcmp(optarg, "co") == 0)
240 ttypath = _PATH_CONSOLE;
241 else if (*optarg != '/')
242 (void)snprintf(ttypath = pathbuf,
243 sizeof(pathbuf), "%s%s", _PATH_TTY, optarg);
246 if (stat(ttypath, &sb) == -1)
247 err(1, "%s", ttypath);
248 if (!S_ISCHR(sb.st_mode))
249 errx(1, "%s: not a terminal", ttypath);
254 uids = getuids(optarg, &nuids);
255 xflg++; /* XXX: intuitive? */
271 termwidth = UNLIMITED;
272 else if (termwidth < 131)
286 #define BACKWARD_COMPATIBILITY
287 #ifdef BACKWARD_COMPATIBILITY
296 * Discard setgid privileges if not the running kernel so that bad
297 * guys can't print interesting stuff from kernel memory.
304 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
306 errx(1, "%s", errbuf);
311 /* XXX - should be cleaner */
312 if (!all && ttydev == NODEV && pid == -1 && !nuids) {
313 if ((uids = malloc(sizeof (*uids))) == NULL)
314 errx(1, "malloc: %s", strerror(errno));
320 * scan requested variables, noting what structures are needed,
321 * and adjusting header widths as appropriate.
328 what = KERN_PROC_UID;
330 } else if (ttydev != NODEV) {
331 what = KERN_PROC_TTY;
333 } else if (pid != -1) {
334 what = KERN_PROC_PID;
337 what = KERN_PROC_ALL;
343 if ((kp = kvm_getprocs(kd, what, flag, &nentries)) == 0)
344 errx(1, "%s", kvm_geterr(kd));
345 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL)
347 for (i = nentries; --i >= 0; ++kp) {
351 dynsizevars(&kinfo[i]);
365 qsort(kinfo, nentries, sizeof(KINFO), pscomp);
367 * for each proc, call each variable output function.
369 for (i = lineno = 0; i < nentries; i++) {
370 if (xflg == 0 && (KI_EPROC(&kinfo[i])->e_tdev == NODEV ||
371 (KI_PROC(&kinfo[i])->p_flag & P_CONTROLT ) == 0))
374 for (uid = 0; uid < nuids; uid++)
375 if (KI_EPROC(&kinfo[i])->e_ucred.cr_uid ==
381 for (vent = vhead; vent; vent = vent->next) {
382 (vent->var->oproc)(&kinfo[i], vent);
383 if (vent->next != NULL)
387 if (prtheader && lineno++ == prtheader - 4) {
399 getuids(const char *arg, int *nuids)
401 char name[UT_NAMESIZE + 1];
403 uid_t *uids, *moreuids;
410 for (; (l = strcspn(arg, SEP)) > 0; arg += l + strspn(arg + l, SEP)) {
411 if (l >= sizeof name) {
412 warnx("%.*s: name too long", l, arg);
415 strncpy(name, arg, l);
417 if ((pwd = getpwnam(name)) == NULL) {
418 warnx("%s: no such user", name);
421 if (*nuids >= alloc) {
422 alloc = (alloc + 1) << 1;
423 moreuids = realloc(uids, alloc * sizeof (*uids));
424 if (moreuids == NULL) {
426 errx(1, "realloc: %s", strerror(errno));
430 uids[(*nuids)++] = pwd->pw_uid;
435 errx(1, "No users specified");
446 for (vent = vhead; vent; vent = vent->next) {
448 if (v->flag & DSIZ) {
449 v->dwidth = v->width;
467 for (vent = vhead; vent; vent = vent->next) {
469 if (!(v->flag & DSIZ))
474 if (v->width > v->dwidth)
475 v->width = v->dwidth;
486 for (vent = vhead; vent; vent = vent->next) {
488 i = strlen(v->header);
491 totwidth += v->width + 1; /* +1 for space */
497 fmt(fn, ki, comm, maxlen)
498 char **(*fn) (kvm_t *, const struct kinfo_proc *, int);
506 fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, maxlen)) == NULL)
511 #define UREADOK(ki) (forceuread || (KI_PROC(ki)->p_flag & P_INMEM))
521 if (KI_PROC(ki)->p_flag & P_INMEM) {
523 * The u-area might be swapped out, and we can't get
524 * at it because we have a crashdump and no swap.
525 * If it's here fill in these fields, otherwise, just
528 usp->u_start = KI_EPROC(ki)->e_stats.p_start;
529 usp->u_ru = KI_EPROC(ki)->e_stats.p_ru;
530 usp->u_cru = KI_EPROC(ki)->e_stats.p_cru;
535 * save arguments if needed
537 if (needcomm && (UREADOK(ki) || (KI_PROC(ki)->p_args != NULL))) {
538 ki->ki_args = fmt(kvm_getargv, ki, KI_THREAD(ki)->td_comm,
540 } else if (needcomm) {
541 ki->ki_args = malloc(strlen(KI_THREAD(ki)->td_comm) + 3);
542 sprintf(ki->ki_args, "(%s)", KI_THREAD(ki)->td_comm);
546 if (needenv && UREADOK(ki)) {
547 ki->ki_env = fmt(kvm_getenvv, ki, (char *)NULL, 0);
548 } else if (needenv) {
549 ki->ki_env = malloc(3);
550 strcpy(ki->ki_env, "()");
561 #define VSIZE(k) (KI_EPROC(k)->e_vm.vm_dsize + KI_EPROC(k)->e_vm.vm_ssize + \
562 KI_EPROC(k)->e_vm.vm_tsize)
564 if (sortby == SORTCPU)
565 return (getpcpu((KINFO *)b) - getpcpu((KINFO *)a));
566 if (sortby == SORTMEM)
567 return (VSIZE((KINFO *)b) - VSIZE((KINFO *)a));
568 i = KI_EPROC((KINFO *)a)->e_tdev - KI_EPROC((KINFO *)b)->e_tdev;
570 i = KI_PROC((KINFO *)a)->p_pid - KI_PROC((KINFO *)b)->p_pid;
575 * ICK (all for getopt), would rather hide the ugliness
576 * here than taint the main code.
581 * The old convention that 't' with no trailing tty arg means the users
582 * tty, is only supported if argv[1] doesn't begin with a '-'. This same
583 * feature is available with the option 'T', which takes no argument.
586 kludge_oldps_options(s)
590 char *newopts, *ns, *cp;
593 if ((newopts = ns = malloc(len + 2)) == NULL)
596 * options begin with '-'
599 *ns++ = '-'; /* add option flag */
601 * gaze to end of argv[1]
605 * if last letter is a 't' flag with no argument (in the context
606 * of the oldps options -- option string NOT starting with a '-' --
607 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)).
609 * However, if a flag accepting a string argument is found in the
610 * option string, the remainder of the string is the argument to
611 * that flag; do not modify that argument.
613 if (strcspn(s, "MNOoU") == len && *cp == 't' && *s != '-')
617 * otherwise check for trailing number, which *may* be a
620 while (cp >= s && isdigit(*cp))
624 memmove(ns, s, (size_t)(cp - s)); /* copy up to trailing number */
627 * if there's a trailing number, and not a preceding 'p' (pid) or
628 * 't' (tty) flag, then assume it's a pid and insert a 'p' flag.
631 (cp == s || (cp[-1] != 't' && cp[-1] != 'p')) &&
632 (cp - 1 == s || cp[-2] != 't'))
634 (void)strcpy(ns, cp); /* and append the number */
643 (void)fprintf(stderr, "%s\n%s\n%s\n",
644 "usage: ps [-aChjlmrSTuvwx] [-O|o fmt] [-p pid] [-t tty] [-U user]",
645 " [-M core] [-N system]",