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
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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 1.5 2003/09/28 14:39:15 hmp 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";
110 main(int argc, char **argv)
112 struct kinfo_proc *kp;
118 int all, ch, flag, i, fmt, lineno, nentries, nocludge, dropgid;
119 int prtheader, wflag, what, xflg, uid, nuids;
120 char *cp, *nlistf, *memf, errbuf[_POSIX2_LINE_MAX];
122 (void) setlocale(LC_ALL, "");
124 if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
125 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
126 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) ||
130 termwidth = ws.ws_col - 1;
133 * Don't apply a kludge if the first argument is an option taking an
138 if (argv[1][0] == '-') {
139 for (cp = PS_ARGS; *cp != '\0'; cp++) {
142 if (*(cp - 1) == argv[1][1]) {
149 argv[1] = kludge_oldps_options(argv[1]);
152 all = fmt = prtheader = wflag = xflg = 0;
158 memf = nlistf = _PATH_DEVNULL;
159 while ((ch = getopt(argc, argv, PS_ARGS)) != -1)
170 case 'e': /* XXX set ufmt */
176 prtheader = ws.ws_row > 5 ? ws.ws_row : 22;
206 o1[0] = o2[0] = '\0';
215 if (getuid() == 0 || getgid() == 0)
230 if ((optarg = ttyname(STDIN_FILENO)) == NULL)
231 errx(1, "stdin: not a terminal");
235 char *ttypath, pathbuf[PATH_MAX];
237 if (strcmp(optarg, "co") == 0)
238 ttypath = _PATH_CONSOLE;
239 else if (*optarg != '/')
240 (void)snprintf(ttypath = pathbuf,
241 sizeof(pathbuf), "%s%s", _PATH_TTY, optarg);
244 if (stat(ttypath, &sb) == -1)
245 err(1, "%s", ttypath);
246 if (!S_ISCHR(sb.st_mode))
247 errx(1, "%s: not a terminal", ttypath);
252 uids = getuids(optarg, &nuids);
253 xflg++; /* XXX: intuitive? */
269 termwidth = UNLIMITED;
270 else if (termwidth < 131)
284 #define BACKWARD_COMPATIBILITY
285 #ifdef BACKWARD_COMPATIBILITY
294 * Discard setgid privileges if not the running kernel so that bad
295 * guys can't print interesting stuff from kernel memory.
302 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
304 errx(1, "%s", errbuf);
309 /* XXX - should be cleaner */
310 if (!all && ttydev == NODEV && pid == -1 && !nuids) {
311 if ((uids = malloc(sizeof (*uids))) == NULL)
312 errx(1, "malloc: %s", strerror(errno));
318 * scan requested variables, noting what structures are needed,
319 * and adjusting header widths as appropriate.
326 what = KERN_PROC_UID;
328 } else if (ttydev != NODEV) {
329 what = KERN_PROC_TTY;
331 } else if (pid != -1) {
332 what = KERN_PROC_PID;
335 what = KERN_PROC_ALL;
341 if ((kp = kvm_getprocs(kd, what, flag, &nentries)) == 0)
342 errx(1, "%s", kvm_geterr(kd));
343 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL)
345 for (i = nentries; --i >= 0; ++kp) {
349 dynsizevars(&kinfo[i]);
363 qsort(kinfo, nentries, sizeof(KINFO), pscomp);
365 * for each proc, call each variable output function.
367 for (i = lineno = 0; i < nentries; i++) {
368 if (xflg == 0 && (KI_EPROC(&kinfo[i])->e_tdev == NODEV ||
369 (KI_PROC(&kinfo[i])->p_flag & P_CONTROLT ) == 0))
372 for (uid = 0; uid < nuids; uid++)
373 if (KI_EPROC(&kinfo[i])->e_ucred.cr_uid ==
379 for (vent = vhead; vent; vent = vent->next) {
380 (vent->var->oproc)(&kinfo[i], vent);
381 if (vent->next != NULL)
385 if (prtheader && lineno++ == prtheader - 4) {
397 getuids(const char *arg, int *nuids)
399 char name[UT_NAMESIZE + 1];
401 uid_t *uids, *moreuids;
408 for (; (l = strcspn(arg, SEP)) > 0; arg += l + strspn(arg + l, SEP)) {
409 if (l >= sizeof name) {
410 warnx("%.*s: name too long", l, arg);
413 strncpy(name, arg, l);
415 if ((pwd = getpwnam(name)) == NULL) {
416 warnx("%s: no such user", name);
419 if (*nuids >= alloc) {
420 alloc = (alloc + 1) << 1;
421 moreuids = realloc(uids, alloc * sizeof (*uids));
422 if (moreuids == NULL) {
424 errx(1, "realloc: %s", strerror(errno));
428 uids[(*nuids)++] = pwd->pw_uid;
433 errx(1, "No users specified");
444 for (vent = vhead; vent; vent = vent->next) {
446 if (v->flag & DSIZ) {
447 v->dwidth = v->width;
458 dynsizevars(KINFO *ki)
464 for (vent = vhead; vent; vent = vent->next) {
466 if (!(v->flag & DSIZ))
471 if (v->width > v->dwidth)
472 v->width = v->dwidth;
483 for (vent = vhead; vent; vent = vent->next) {
485 i = strlen(v->header);
488 totwidth += v->width + 1; /* +1 for space */
494 fmt(char **(*fn) (kvm_t *, const struct kinfo_proc *, int), KINFO *ki, char
500 fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, maxlen)) == NULL)
505 #define UREADOK(ki) (forceuread || (KI_PROC(ki)->p_flag & P_INMEM))
514 if (KI_PROC(ki)->p_flag & P_INMEM) {
516 * The u-area might be swapped out, and we can't get
517 * at it because we have a crashdump and no swap.
518 * If it's here fill in these fields, otherwise, just
521 usp->u_start = KI_EPROC(ki)->e_stats.p_start;
522 usp->u_ru = KI_EPROC(ki)->e_stats.p_ru;
523 usp->u_cru = KI_EPROC(ki)->e_stats.p_cru;
528 * save arguments if needed
530 if (needcomm && (UREADOK(ki) || (KI_PROC(ki)->p_args != NULL))) {
531 ki->ki_args = fmt(kvm_getargv, ki, KI_THREAD(ki)->td_comm,
533 } else if (needcomm) {
534 ki->ki_args = malloc(strlen(KI_THREAD(ki)->td_comm) + 3);
535 sprintf(ki->ki_args, "(%s)", KI_THREAD(ki)->td_comm);
539 if (needenv && UREADOK(ki)) {
540 ki->ki_env = fmt(kvm_getenvv, ki, (char *)NULL, 0);
541 } else if (needenv) {
542 ki->ki_env = malloc(3);
543 strcpy(ki->ki_env, "()");
550 pscomp(const void *a, const void *b)
553 #define VSIZE(k) (KI_EPROC(k)->e_vm.vm_dsize + KI_EPROC(k)->e_vm.vm_ssize + \
554 KI_EPROC(k)->e_vm.vm_tsize)
556 if (sortby == SORTCPU)
557 return (getpcpu((KINFO *)b) - getpcpu((KINFO *)a));
558 if (sortby == SORTMEM)
559 return (VSIZE((KINFO *)b) - VSIZE((KINFO *)a));
560 i = KI_EPROC((KINFO *)a)->e_tdev - KI_EPROC((KINFO *)b)->e_tdev;
562 i = KI_PROC((KINFO *)a)->p_pid - KI_PROC((KINFO *)b)->p_pid;
567 * ICK (all for getopt), would rather hide the ugliness
568 * here than taint the main code.
573 * The old convention that 't' with no trailing tty arg means the users
574 * tty, is only supported if argv[1] doesn't begin with a '-'. This same
575 * feature is available with the option 'T', which takes no argument.
578 kludge_oldps_options(char *s)
581 char *newopts, *ns, *cp;
584 if ((newopts = ns = malloc(len + 2)) == NULL)
587 * options begin with '-'
590 *ns++ = '-'; /* add option flag */
592 * gaze to end of argv[1]
596 * if last letter is a 't' flag with no argument (in the context
597 * of the oldps options -- option string NOT starting with a '-' --
598 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)).
600 * However, if a flag accepting a string argument is found in the
601 * option string, the remainder of the string is the argument to
602 * that flag; do not modify that argument.
604 if (strcspn(s, "MNOoU") == len && *cp == 't' && *s != '-')
608 * otherwise check for trailing number, which *may* be a
611 while (cp >= s && isdigit(*cp))
615 memmove(ns, s, (size_t)(cp - s)); /* copy up to trailing number */
618 * if there's a trailing number, and not a preceding 'p' (pid) or
619 * 't' (tty) flag, then assume it's a pid and insert a 'p' flag.
622 (cp == s || (cp[-1] != 't' && cp[-1] != 'p')) &&
623 (cp - 1 == s || cp[-2] != 't'))
625 (void)strcpy(ns, cp); /* and append the number */
634 (void)fprintf(stderr, "%s\n%s\n%s\n",
635 "usage: ps [-aChjlmrSTuvwx] [-O|o fmt] [-p pid] [-t tty] [-U user]",
636 " [-M core] [-N system]",