1 /*- 2 * Copyright (c) 1990, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 16 * 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 27 * SUCH DAMAGE. 28 * ------+---------+---------+-------- + --------+---------+---------+---------* 29 * Copyright (c) 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>. 30 * All rights reserved. 31 * 32 * Significant modifications made to bring `ps' options somewhat closer 33 * to the standard for `ps' as described in SingleUnixSpec-v3. 34 * ------+---------+---------+-------- + --------+---------+---------+---------* 35 */ 36 37 #ifndef lint 38 static const char copyright[] = 39 "@(#) Copyright (c) 1990, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #if 0 44 #ifndef lint 45 static char sccsid[] = "@(#)ps.c 8.4 (Berkeley) 4/2/94"; 46 #endif /* not lint */ 47 #endif 48 49 #include <sys/cdefs.h> 50 __FBSDID("$FreeBSD$"); 51 52 #include <sys/param.h> 53 #include <sys/jail.h> 54 #include <sys/proc.h> 55 #include <sys/user.h> 56 #include <sys/stat.h> 57 #include <sys/ioctl.h> 58 #include <sys/sysctl.h> 59 #include <sys/mount.h> 60 61 #include <ctype.h> 62 #include <err.h> 63 #include <errno.h> 64 #include <fcntl.h> 65 #include <grp.h> 66 #include <jail.h> 67 #include <kvm.h> 68 #include <limits.h> 69 #include <locale.h> 70 #include <paths.h> 71 #include <pwd.h> 72 #include <stdio.h> 73 #include <stdlib.h> 74 #include <string.h> 75 #include <unistd.h> 76 #include <libxo/xo.h> 77 78 #include "ps.h" 79 80 #define _PATH_PTS "/dev/pts/" 81 82 #define W_SEP " \t" /* "Whitespace" list separators */ 83 #define T_SEP "," /* "Terminate-element" list separators */ 84 85 #ifdef LAZY_PS 86 #define DEF_UREAD 0 87 #define OPT_LAZY_f "f" 88 #else 89 #define DEF_UREAD 1 /* Always do the more-expensive read. */ 90 #define OPT_LAZY_f /* I.e., the `-f' option is not added. */ 91 #endif 92 93 /* 94 * isdigit takes an `int', but expects values in the range of unsigned char. 95 * This wrapper ensures that values from a 'char' end up in the correct range. 96 */ 97 #define isdigitch(Anychar) isdigit((u_char)(Anychar)) 98 99 int cflag; /* -c */ 100 int eval; /* Exit value */ 101 time_t now; /* Current time(3) value */ 102 int rawcpu; /* -C */ 103 int sumrusage; /* -S */ 104 int termwidth; /* Width of the screen (0 == infinity). */ 105 int showthreads; /* will threads be shown? */ 106 107 struct velisthead varlist = STAILQ_HEAD_INITIALIZER(varlist); 108 109 static int forceuread = DEF_UREAD; /* Do extra work to get u-area. */ 110 static kvm_t *kd; 111 static int needcomm; /* -o "command" */ 112 static int needenv; /* -e */ 113 static int needuser; /* -o "user" */ 114 static int optfatal; /* Fatal error parsing some list-option. */ 115 static int pid_max; /* kern.max_pid */ 116 117 static enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 118 119 struct listinfo; 120 typedef int addelem_rtn(struct listinfo *_inf, const char *_elem); 121 122 struct listinfo { 123 int count; 124 int maxcount; 125 int elemsize; 126 addelem_rtn *addelem; 127 const char *lname; 128 union { 129 gid_t *gids; 130 int *jids; 131 pid_t *pids; 132 dev_t *ttys; 133 uid_t *uids; 134 void *ptr; 135 } l; 136 }; 137 138 static int addelem_gid(struct listinfo *, const char *); 139 static int addelem_jid(struct listinfo *, const char *); 140 static int addelem_pid(struct listinfo *, const char *); 141 static int addelem_tty(struct listinfo *, const char *); 142 static int addelem_uid(struct listinfo *, const char *); 143 static void add_list(struct listinfo *, const char *); 144 static void descendant_sort(KINFO *, int); 145 static void format_output(KINFO *); 146 static void *expand_list(struct listinfo *); 147 static const char * 148 fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int), 149 KINFO *, char *, char *, int); 150 static void free_list(struct listinfo *); 151 static void init_list(struct listinfo *, addelem_rtn, int, const char *); 152 static char *kludge_oldps_options(const char *, char *, const char *); 153 static int pscomp(const void *, const void *); 154 static void saveuser(KINFO *); 155 static void scanvars(void); 156 static void sizevars(void); 157 static void pidmax_init(void); 158 static void usage(void); 159 160 static char dfmt[] = "pid,tt,state,time,command"; 161 static char jfmt[] = "user,pid,ppid,pgid,sid,jobc,state,tt,time,command"; 162 static char lfmt[] = "uid,pid,ppid,cpu,pri,nice,vsz,rss,mwchan,state," 163 "tt,time,command"; 164 static char o1[] = "pid"; 165 static char o2[] = "tt,state,time,command"; 166 static char ufmt[] = "user,pid,%cpu,%mem,vsz,rss,tt,state,start,time,command"; 167 static char vfmt[] = "pid,state,time,sl,re,pagein,vsz,rss,lim,tsiz," 168 "%cpu,%mem,command"; 169 static char Zfmt[] = "label"; 170 171 #define PS_ARGS "AaCcde" OPT_LAZY_f "G:gHhjJ:LlM:mN:O:o:p:rSTt:U:uvwXxZ" 172 173 int 174 main(int argc, char *argv[]) 175 { 176 struct listinfo gidlist, jidlist, pgrplist, pidlist; 177 struct listinfo ruidlist, sesslist, ttylist, uidlist; 178 struct kinfo_proc *kp; 179 KINFO *kinfo = NULL, *next_KINFO; 180 KINFO_STR *ks; 181 struct varent *vent; 182 struct winsize ws = { .ws_row = 0 }; 183 const char *nlistf, *memf, *str; 184 char *cols; 185 int all, ch, elem, flag, _fmt, i, lineno, linelen, left; 186 int descendancy, nentries, nkept, nselectors; 187 int prtheader, wflag, what, xkeep, xkeep_implied; 188 int fwidthmin, fwidthmax; 189 char errbuf[_POSIX2_LINE_MAX]; 190 char fmtbuf[_POSIX2_LINE_MAX]; 191 192 (void) setlocale(LC_ALL, ""); 193 time(&now); /* Used by routines in print.c. */ 194 195 if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0') 196 termwidth = atoi(cols); 197 else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 198 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 199 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) || 200 ws.ws_col == 0) 201 termwidth = 79; 202 else 203 termwidth = ws.ws_col - 1; 204 205 /* 206 * Hide a number of option-processing kludges in a separate routine, 207 * to support some historical BSD behaviors, such as `ps axu'. 208 */ 209 if (argc > 1) 210 argv[1] = kludge_oldps_options(PS_ARGS, argv[1], argv[2]); 211 212 pidmax_init(); 213 214 all = descendancy = _fmt = nselectors = optfatal = 0; 215 prtheader = showthreads = wflag = xkeep_implied = 0; 216 xkeep = -1; /* Neither -x nor -X. */ 217 init_list(&gidlist, addelem_gid, sizeof(gid_t), "group"); 218 init_list(&jidlist, addelem_jid, sizeof(int), "jail id"); 219 init_list(&pgrplist, addelem_pid, sizeof(pid_t), "process group"); 220 init_list(&pidlist, addelem_pid, sizeof(pid_t), "process id"); 221 init_list(&ruidlist, addelem_uid, sizeof(uid_t), "ruser"); 222 init_list(&sesslist, addelem_pid, sizeof(pid_t), "session id"); 223 init_list(&ttylist, addelem_tty, sizeof(dev_t), "tty"); 224 init_list(&uidlist, addelem_uid, sizeof(uid_t), "user"); 225 memf = _PATH_DEVNULL; 226 nlistf = NULL; 227 228 argc = xo_parse_args(argc, argv); 229 if (argc < 0) 230 exit(1); 231 232 while ((ch = getopt(argc, argv, PS_ARGS)) != -1) 233 switch (ch) { 234 case 'A': 235 /* 236 * Exactly the same as `-ax'. This has been 237 * added for compatibility with SUSv3, but for 238 * now it will not be described in the man page. 239 */ 240 nselectors++; 241 all = xkeep = 1; 242 break; 243 case 'a': 244 nselectors++; 245 all = 1; 246 break; 247 case 'C': 248 rawcpu = 1; 249 break; 250 case 'c': 251 cflag = 1; 252 break; 253 case 'd': 254 descendancy = 1; 255 break; 256 case 'e': /* XXX set ufmt */ 257 needenv = 1; 258 break; 259 #ifdef LAZY_PS 260 case 'f': 261 if (getuid() == 0 || getgid() == 0) 262 forceuread = 1; 263 break; 264 #endif 265 case 'G': 266 add_list(&gidlist, optarg); 267 xkeep_implied = 1; 268 nselectors++; 269 break; 270 case 'g': 271 #if 0 272 /*- 273 * XXX - This SUSv3 behavior is still under debate 274 * since it conflicts with the (undocumented) 275 * `-g' option. So we skip it for now. 276 */ 277 add_list(&pgrplist, optarg); 278 xkeep_implied = 1; 279 nselectors++; 280 break; 281 #else 282 /* The historical BSD-ish (from SunOS) behavior. */ 283 break; /* no-op */ 284 #endif 285 case 'H': 286 showthreads = KERN_PROC_INC_THREAD; 287 break; 288 case 'h': 289 prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 290 break; 291 case 'J': 292 add_list(&jidlist, optarg); 293 xkeep_implied = 1; 294 nselectors++; 295 break; 296 case 'j': 297 parsefmt(jfmt, 0); 298 _fmt = 1; 299 jfmt[0] = '\0'; 300 break; 301 case 'L': 302 showkey(); 303 exit(0); 304 case 'l': 305 parsefmt(lfmt, 0); 306 _fmt = 1; 307 lfmt[0] = '\0'; 308 break; 309 case 'M': 310 memf = optarg; 311 break; 312 case 'm': 313 sortby = SORTMEM; 314 break; 315 case 'N': 316 nlistf = optarg; 317 break; 318 case 'O': 319 parsefmt(o1, 1); 320 parsefmt(optarg, 1); 321 parsefmt(o2, 1); 322 o1[0] = o2[0] = '\0'; 323 _fmt = 1; 324 break; 325 case 'o': 326 parsefmt(optarg, 1); 327 _fmt = 1; 328 break; 329 case 'p': 330 add_list(&pidlist, optarg); 331 /* 332 * Note: `-p' does not *set* xkeep, but any values 333 * from pidlist are checked before xkeep is. That 334 * way they are always matched, even if the user 335 * specifies `-X'. 336 */ 337 nselectors++; 338 break; 339 #if 0 340 case 'R': 341 /*- 342 * XXX - This un-standard option is still under 343 * debate. This is what SUSv3 defines as 344 * the `-U' option, and while it would be 345 * nice to have, it could cause even more 346 * confusion to implement it as `-R'. 347 */ 348 add_list(&ruidlist, optarg); 349 xkeep_implied = 1; 350 nselectors++; 351 break; 352 #endif 353 case 'r': 354 sortby = SORTCPU; 355 break; 356 case 'S': 357 sumrusage = 1; 358 break; 359 #if 0 360 case 's': 361 /*- 362 * XXX - This non-standard option is still under 363 * debate. This *is* supported on Solaris, 364 * Linux, and IRIX, but conflicts with `-s' 365 * on NetBSD and maybe some older BSD's. 366 */ 367 add_list(&sesslist, optarg); 368 xkeep_implied = 1; 369 nselectors++; 370 break; 371 #endif 372 case 'T': 373 if ((optarg = ttyname(STDIN_FILENO)) == NULL) 374 xo_errx(1, "stdin: not a terminal"); 375 /* FALLTHROUGH */ 376 case 't': 377 add_list(&ttylist, optarg); 378 xkeep_implied = 1; 379 nselectors++; 380 break; 381 case 'U': 382 /* This is what SUSv3 defines as the `-u' option. */ 383 add_list(&uidlist, optarg); 384 xkeep_implied = 1; 385 nselectors++; 386 break; 387 case 'u': 388 parsefmt(ufmt, 0); 389 sortby = SORTCPU; 390 _fmt = 1; 391 ufmt[0] = '\0'; 392 break; 393 case 'v': 394 parsefmt(vfmt, 0); 395 sortby = SORTMEM; 396 _fmt = 1; 397 vfmt[0] = '\0'; 398 break; 399 case 'w': 400 if (wflag) 401 termwidth = UNLIMITED; 402 else if (termwidth < 131) 403 termwidth = 131; 404 wflag++; 405 break; 406 case 'X': 407 /* 408 * Note that `-X' and `-x' are not standard "selector" 409 * options. For most selector-options, we check *all* 410 * processes to see if any are matched by the given 411 * value(s). After we have a set of all the matched 412 * processes, then `-X' and `-x' govern whether we 413 * modify that *matched* set for processes which do 414 * not have a controlling terminal. `-X' causes 415 * those processes to be deleted from the matched 416 * set, while `-x' causes them to be kept. 417 */ 418 xkeep = 0; 419 break; 420 case 'x': 421 xkeep = 1; 422 break; 423 case 'Z': 424 parsefmt(Zfmt, 0); 425 Zfmt[0] = '\0'; 426 break; 427 case '?': 428 default: 429 usage(); 430 } 431 argc -= optind; 432 argv += optind; 433 434 /* 435 * If there arguments after processing all the options, attempt 436 * to treat them as a list of process ids. 437 */ 438 while (*argv) { 439 if (!isdigitch(**argv)) 440 break; 441 add_list(&pidlist, *argv); 442 argv++; 443 } 444 if (*argv) { 445 xo_warnx("illegal argument: %s\n", *argv); 446 usage(); 447 } 448 if (optfatal) 449 exit(1); /* Error messages already printed. */ 450 if (xkeep < 0) /* Neither -X nor -x was specified. */ 451 xkeep = xkeep_implied; 452 453 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 454 if (kd == NULL) 455 xo_errx(1, "%s", errbuf); 456 457 if (!_fmt) 458 parsefmt(dfmt, 0); 459 460 if (nselectors == 0) { 461 uidlist.l.ptr = malloc(sizeof(uid_t)); 462 if (uidlist.l.ptr == NULL) 463 xo_errx(1, "malloc failed"); 464 nselectors = 1; 465 uidlist.count = uidlist.maxcount = 1; 466 *uidlist.l.uids = getuid(); 467 } 468 469 /* 470 * scan requested variables, noting what structures are needed, 471 * and adjusting header widths as appropriate. 472 */ 473 scanvars(); 474 475 /* 476 * Get process list. If the user requested just one selector- 477 * option, then kvm_getprocs can be asked to return just those 478 * processes. Otherwise, have it return all processes, and 479 * then this routine will search that full list and select the 480 * processes which match any of the user's selector-options. 481 */ 482 what = showthreads != 0 ? KERN_PROC_ALL : KERN_PROC_PROC; 483 flag = 0; 484 if (nselectors == 1) { 485 if (gidlist.count == 1) { 486 what = KERN_PROC_RGID | showthreads; 487 flag = *gidlist.l.gids; 488 nselectors = 0; 489 } else if (pgrplist.count == 1) { 490 what = KERN_PROC_PGRP | showthreads; 491 flag = *pgrplist.l.pids; 492 nselectors = 0; 493 } else if (pidlist.count == 1) { 494 what = KERN_PROC_PID | showthreads; 495 flag = *pidlist.l.pids; 496 nselectors = 0; 497 } else if (ruidlist.count == 1) { 498 what = KERN_PROC_RUID | showthreads; 499 flag = *ruidlist.l.uids; 500 nselectors = 0; 501 } else if (sesslist.count == 1) { 502 what = KERN_PROC_SESSION | showthreads; 503 flag = *sesslist.l.pids; 504 nselectors = 0; 505 } else if (ttylist.count == 1) { 506 what = KERN_PROC_TTY | showthreads; 507 flag = *ttylist.l.ttys; 508 nselectors = 0; 509 } else if (uidlist.count == 1) { 510 what = KERN_PROC_UID | showthreads; 511 flag = *uidlist.l.uids; 512 nselectors = 0; 513 } else if (all) { 514 /* No need for this routine to select processes. */ 515 nselectors = 0; 516 } 517 } 518 519 /* 520 * select procs 521 */ 522 nentries = -1; 523 kp = kvm_getprocs(kd, what, flag, &nentries); 524 if ((kp == NULL && nentries > 0) || (kp != NULL && nentries < 0)) 525 xo_errx(1, "%s", kvm_geterr(kd)); 526 nkept = 0; 527 if (nentries > 0) { 528 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL) 529 xo_errx(1, "malloc failed"); 530 for (i = nentries; --i >= 0; ++kp) { 531 /* 532 * If the user specified multiple selection-criteria, 533 * then keep any process matched by the inclusive OR 534 * of all the selection-criteria given. 535 */ 536 if (pidlist.count > 0) { 537 for (elem = 0; elem < pidlist.count; elem++) 538 if (kp->ki_pid == pidlist.l.pids[elem]) 539 goto keepit; 540 } 541 /* 542 * Note that we had to process pidlist before 543 * filtering out processes which do not have 544 * a controlling terminal. 545 */ 546 if (xkeep == 0) { 547 if ((kp->ki_tdev == NODEV || 548 (kp->ki_flag & P_CONTROLT) == 0)) 549 continue; 550 } 551 if (nselectors == 0) 552 goto keepit; 553 if (gidlist.count > 0) { 554 for (elem = 0; elem < gidlist.count; elem++) 555 if (kp->ki_rgid == gidlist.l.gids[elem]) 556 goto keepit; 557 } 558 if (jidlist.count > 0) { 559 for (elem = 0; elem < jidlist.count; elem++) 560 if (kp->ki_jid == jidlist.l.jids[elem]) 561 goto keepit; 562 } 563 if (pgrplist.count > 0) { 564 for (elem = 0; elem < pgrplist.count; elem++) 565 if (kp->ki_pgid == 566 pgrplist.l.pids[elem]) 567 goto keepit; 568 } 569 if (ruidlist.count > 0) { 570 for (elem = 0; elem < ruidlist.count; elem++) 571 if (kp->ki_ruid == 572 ruidlist.l.uids[elem]) 573 goto keepit; 574 } 575 if (sesslist.count > 0) { 576 for (elem = 0; elem < sesslist.count; elem++) 577 if (kp->ki_sid == sesslist.l.pids[elem]) 578 goto keepit; 579 } 580 if (ttylist.count > 0) { 581 for (elem = 0; elem < ttylist.count; elem++) 582 if (kp->ki_tdev == ttylist.l.ttys[elem]) 583 goto keepit; 584 } 585 if (uidlist.count > 0) { 586 for (elem = 0; elem < uidlist.count; elem++) 587 if (kp->ki_uid == uidlist.l.uids[elem]) 588 goto keepit; 589 } 590 /* 591 * This process did not match any of the user's 592 * selector-options, so skip the process. 593 */ 594 continue; 595 596 keepit: 597 next_KINFO = &kinfo[nkept]; 598 next_KINFO->ki_p = kp; 599 next_KINFO->ki_d.level = 0; 600 next_KINFO->ki_d.prefix = NULL; 601 next_KINFO->ki_pcpu = getpcpu(next_KINFO); 602 if (sortby == SORTMEM) 603 next_KINFO->ki_memsize = kp->ki_tsize + 604 kp->ki_dsize + kp->ki_ssize; 605 if (needuser) 606 saveuser(next_KINFO); 607 nkept++; 608 } 609 } 610 611 sizevars(); 612 613 if (nkept == 0) { 614 printheader(); 615 exit(1); 616 } 617 618 /* 619 * sort proc list 620 */ 621 qsort(kinfo, nkept, sizeof(KINFO), pscomp); 622 623 /* 624 * We want things in descendant order 625 */ 626 if (descendancy) 627 descendant_sort(kinfo, nkept); 628 629 630 /* 631 * Prepare formatted output. 632 */ 633 for (i = 0; i < nkept; i++) 634 format_output(&kinfo[i]); 635 636 /* 637 * Print header. 638 */ 639 xo_open_container("process-information"); 640 printheader(); 641 if (xo_get_style(NULL) != XO_STYLE_TEXT) 642 termwidth = UNLIMITED; 643 644 /* 645 * Output formatted lines. 646 */ 647 xo_open_list("process"); 648 for (i = lineno = 0; i < nkept; i++) { 649 linelen = 0; 650 xo_open_instance("process"); 651 STAILQ_FOREACH(vent, &varlist, next_ve) { 652 ks = STAILQ_FIRST(&kinfo[i].ki_ks); 653 STAILQ_REMOVE_HEAD(&kinfo[i].ki_ks, ks_next); 654 /* Truncate rightmost column if necessary. */ 655 fwidthmax = _POSIX2_LINE_MAX; 656 if (STAILQ_NEXT(vent, next_ve) == NULL && 657 termwidth != UNLIMITED && ks->ks_str != NULL) { 658 left = termwidth - linelen; 659 if (left > 0 && left < (int)strlen(ks->ks_str)) 660 fwidthmax = left; 661 } 662 663 str = ks->ks_str; 664 if (str == NULL) 665 str = "-"; 666 /* No padding for the last column, if it's LJUST. */ 667 fwidthmin = (xo_get_style(NULL) != XO_STYLE_TEXT || 668 (STAILQ_NEXT(vent, next_ve) == NULL && 669 (vent->var->flag & LJUST))) ? 0 : vent->var->width; 670 snprintf(fmtbuf, sizeof(fmtbuf), "{:%s/%%%s%d..%ds}", 671 vent->var->field ?: vent->var->name, 672 (vent->var->flag & LJUST) ? "-" : "", 673 fwidthmin, fwidthmax); 674 xo_emit(fmtbuf, str); 675 linelen += fwidthmin; 676 677 if (ks->ks_str != NULL) { 678 free(ks->ks_str); 679 ks->ks_str = NULL; 680 } 681 free(ks); 682 ks = NULL; 683 684 if (STAILQ_NEXT(vent, next_ve) != NULL) { 685 xo_emit("{P: }"); 686 linelen++; 687 } 688 } 689 xo_emit("\n"); 690 xo_close_instance("process"); 691 if (prtheader && lineno++ == prtheader - 4) { 692 xo_emit("\n"); 693 printheader(); 694 lineno = 0; 695 } 696 } 697 xo_close_list("process"); 698 xo_close_container("process-information"); 699 xo_finish(); 700 701 free_list(&gidlist); 702 free_list(&jidlist); 703 free_list(&pidlist); 704 free_list(&pgrplist); 705 free_list(&ruidlist); 706 free_list(&sesslist); 707 free_list(&ttylist); 708 free_list(&uidlist); 709 for (i = 0; i < nkept; i++) 710 free(kinfo[i].ki_d.prefix); 711 free(kinfo); 712 713 exit(eval); 714 } 715 716 static int 717 addelem_gid(struct listinfo *inf, const char *elem) 718 { 719 struct group *grp; 720 const char *nameorID; 721 char *endp; 722 u_long bigtemp; 723 724 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 725 if (*elem == '\0') 726 xo_warnx("Invalid (zero-length) %s name", inf->lname); 727 else 728 xo_warnx("%s name too long: %s", inf->lname, elem); 729 optfatal = 1; 730 return (0); /* Do not add this value. */ 731 } 732 733 /* 734 * SUSv3 states that `ps -G grouplist' should match "real-group 735 * ID numbers", and does not mention group-names. I do want to 736 * also support group-names, so this tries for a group-id first, 737 * and only tries for a name if that doesn't work. This is the 738 * opposite order of what is done in addelem_uid(), but in 739 * practice the order would only matter for group-names which 740 * are all-numeric. 741 */ 742 grp = NULL; 743 nameorID = "named"; 744 errno = 0; 745 bigtemp = strtoul(elem, &endp, 10); 746 if (errno == 0 && *endp == '\0' && bigtemp <= GID_MAX) { 747 nameorID = "name or ID matches"; 748 grp = getgrgid((gid_t)bigtemp); 749 } 750 if (grp == NULL) 751 grp = getgrnam(elem); 752 if (grp == NULL) { 753 xo_warnx("No %s %s '%s'", inf->lname, nameorID, elem); 754 optfatal = 1; 755 return (0); 756 } 757 if (inf->count >= inf->maxcount) 758 expand_list(inf); 759 inf->l.gids[(inf->count)++] = grp->gr_gid; 760 return (1); 761 } 762 763 static int 764 addelem_jid(struct listinfo *inf, const char *elem) 765 { 766 int tempid; 767 768 if (*elem == '\0') { 769 warnx("Invalid (zero-length) jail id"); 770 optfatal = 1; 771 return (0); /* Do not add this value. */ 772 } 773 774 tempid = jail_getid(elem); 775 if (tempid < 0) { 776 warnx("Invalid %s: %s", inf->lname, elem); 777 optfatal = 1; 778 return (0); 779 } 780 781 if (inf->count >= inf->maxcount) 782 expand_list(inf); 783 inf->l.jids[(inf->count)++] = tempid; 784 return (1); 785 } 786 787 static int 788 addelem_pid(struct listinfo *inf, const char *elem) 789 { 790 char *endp; 791 long tempid; 792 793 if (*elem == '\0') { 794 xo_warnx("Invalid (zero-length) process id"); 795 optfatal = 1; 796 return (0); /* Do not add this value. */ 797 } 798 799 errno = 0; 800 tempid = strtol(elem, &endp, 10); 801 if (*endp != '\0' || tempid < 0 || elem == endp) { 802 xo_warnx("Invalid %s: %s", inf->lname, elem); 803 errno = ERANGE; 804 } else if (errno != 0 || tempid > pid_max) { 805 xo_warnx("%s too large: %s", inf->lname, elem); 806 errno = ERANGE; 807 } 808 if (errno == ERANGE) { 809 optfatal = 1; 810 return (0); 811 } 812 if (inf->count >= inf->maxcount) 813 expand_list(inf); 814 inf->l.pids[(inf->count)++] = tempid; 815 return (1); 816 } 817 818 /*- 819 * The user can specify a device via one of three formats: 820 * 1) fully qualified, e.g.: /dev/ttyp0 /dev/console /dev/pts/0 821 * 2) missing "/dev", e.g.: ttyp0 console pts/0 822 * 3) two-letters, e.g.: p0 co 0 823 * (matching letters that would be seen in the "TT" column) 824 */ 825 static int 826 addelem_tty(struct listinfo *inf, const char *elem) 827 { 828 const char *ttypath; 829 struct stat sb; 830 char pathbuf[PATH_MAX], pathbuf2[PATH_MAX], pathbuf3[PATH_MAX]; 831 832 ttypath = NULL; 833 pathbuf2[0] = '\0'; 834 pathbuf3[0] = '\0'; 835 switch (*elem) { 836 case '/': 837 ttypath = elem; 838 break; 839 case 'c': 840 if (strcmp(elem, "co") == 0) { 841 ttypath = _PATH_CONSOLE; 842 break; 843 } 844 /* FALLTHROUGH */ 845 default: 846 strlcpy(pathbuf, _PATH_DEV, sizeof(pathbuf)); 847 strlcat(pathbuf, elem, sizeof(pathbuf)); 848 ttypath = pathbuf; 849 if (strncmp(pathbuf, _PATH_TTY, strlen(_PATH_TTY)) == 0) 850 break; 851 if (strncmp(pathbuf, _PATH_PTS, strlen(_PATH_PTS)) == 0) 852 break; 853 if (strcmp(pathbuf, _PATH_CONSOLE) == 0) 854 break; 855 /* Check to see if /dev/tty${elem} exists */ 856 strlcpy(pathbuf2, _PATH_TTY, sizeof(pathbuf2)); 857 strlcat(pathbuf2, elem, sizeof(pathbuf2)); 858 if (stat(pathbuf2, &sb) == 0 && S_ISCHR(sb.st_mode)) { 859 /* No need to repeat stat() && S_ISCHR() checks */ 860 ttypath = NULL; 861 break; 862 } 863 /* Check to see if /dev/pts/${elem} exists */ 864 strlcpy(pathbuf3, _PATH_PTS, sizeof(pathbuf3)); 865 strlcat(pathbuf3, elem, sizeof(pathbuf3)); 866 if (stat(pathbuf3, &sb) == 0 && S_ISCHR(sb.st_mode)) { 867 /* No need to repeat stat() && S_ISCHR() checks */ 868 ttypath = NULL; 869 break; 870 } 871 break; 872 } 873 if (ttypath) { 874 if (stat(ttypath, &sb) == -1) { 875 if (pathbuf3[0] != '\0') 876 xo_warn("%s, %s, and %s", pathbuf3, pathbuf2, 877 ttypath); 878 else 879 xo_warn("%s", ttypath); 880 optfatal = 1; 881 return (0); 882 } 883 if (!S_ISCHR(sb.st_mode)) { 884 if (pathbuf3[0] != '\0') 885 xo_warnx("%s, %s, and %s: Not a terminal", 886 pathbuf3, pathbuf2, ttypath); 887 else 888 xo_warnx("%s: Not a terminal", ttypath); 889 optfatal = 1; 890 return (0); 891 } 892 } 893 if (inf->count >= inf->maxcount) 894 expand_list(inf); 895 inf->l.ttys[(inf->count)++] = sb.st_rdev; 896 return (1); 897 } 898 899 static int 900 addelem_uid(struct listinfo *inf, const char *elem) 901 { 902 struct passwd *pwd; 903 char *endp; 904 u_long bigtemp; 905 906 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 907 if (*elem == '\0') 908 xo_warnx("Invalid (zero-length) %s name", inf->lname); 909 else 910 xo_warnx("%s name too long: %s", inf->lname, elem); 911 optfatal = 1; 912 return (0); /* Do not add this value. */ 913 } 914 915 pwd = getpwnam(elem); 916 if (pwd == NULL) { 917 errno = 0; 918 bigtemp = strtoul(elem, &endp, 10); 919 if (errno != 0 || *endp != '\0' || bigtemp > UID_MAX) 920 xo_warnx("No %s named '%s'", inf->lname, elem); 921 else { 922 /* The string is all digits, so it might be a userID. */ 923 pwd = getpwuid((uid_t)bigtemp); 924 if (pwd == NULL) 925 xo_warnx("No %s name or ID matches '%s'", 926 inf->lname, elem); 927 } 928 } 929 if (pwd == NULL) { 930 /* 931 * These used to be treated as minor warnings (and the 932 * option was simply ignored), but now they are fatal 933 * errors (and the command will be aborted). 934 */ 935 optfatal = 1; 936 return (0); 937 } 938 if (inf->count >= inf->maxcount) 939 expand_list(inf); 940 inf->l.uids[(inf->count)++] = pwd->pw_uid; 941 return (1); 942 } 943 944 static void 945 add_list(struct listinfo *inf, const char *argp) 946 { 947 const char *savep; 948 char *cp, *endp; 949 int toolong; 950 char elemcopy[PATH_MAX]; 951 952 if (*argp == '\0') 953 inf->addelem(inf, argp); 954 while (*argp != '\0') { 955 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 956 argp++; 957 savep = argp; 958 toolong = 0; 959 cp = elemcopy; 960 if (strchr(T_SEP, *argp) == NULL) { 961 endp = elemcopy + sizeof(elemcopy) - 1; 962 while (*argp != '\0' && cp <= endp && 963 strchr(W_SEP T_SEP, *argp) == NULL) 964 *cp++ = *argp++; 965 if (cp > endp) 966 toolong = 1; 967 } 968 if (!toolong) { 969 *cp = '\0'; 970 /* 971 * Add this single element to the given list. 972 */ 973 inf->addelem(inf, elemcopy); 974 } else { 975 /* 976 * The string is too long to copy. Find the end 977 * of the string to print out the warning message. 978 */ 979 while (*argp != '\0' && strchr(W_SEP T_SEP, 980 *argp) == NULL) 981 argp++; 982 xo_warnx("Value too long: %.*s", (int)(argp - savep), 983 savep); 984 optfatal = 1; 985 } 986 /* 987 * Skip over any number of trailing whitespace characters, 988 * but only one (at most) trailing element-terminating 989 * character. 990 */ 991 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 992 argp++; 993 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) { 994 argp++; 995 /* Catch case where string ended with a comma. */ 996 if (*argp == '\0') 997 inf->addelem(inf, argp); 998 } 999 } 1000 } 1001 1002 static void 1003 descendant_sort(KINFO *ki, int items) 1004 { 1005 int dst, lvl, maxlvl, n, ndst, nsrc, siblings, src; 1006 unsigned char *path; 1007 KINFO kn; 1008 1009 /* 1010 * First, sort the entries by descendancy, tracking the descendancy 1011 * depth in the ki_d.level field. 1012 */ 1013 src = 0; 1014 maxlvl = 0; 1015 while (src < items) { 1016 if (ki[src].ki_d.level) { 1017 src++; 1018 continue; 1019 } 1020 for (nsrc = 1; src + nsrc < items; nsrc++) 1021 if (!ki[src + nsrc].ki_d.level) 1022 break; 1023 1024 for (dst = 0; dst < items; dst++) { 1025 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_pid) 1026 continue; 1027 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_ppid) 1028 break; 1029 } 1030 1031 if (dst == items) { 1032 src += nsrc; 1033 continue; 1034 } 1035 1036 for (ndst = 1; dst + ndst < items; ndst++) 1037 if (ki[dst + ndst].ki_d.level <= ki[dst].ki_d.level) 1038 break; 1039 1040 for (n = src; n < src + nsrc; n++) { 1041 ki[n].ki_d.level += ki[dst].ki_d.level + 1; 1042 if (maxlvl < ki[n].ki_d.level) 1043 maxlvl = ki[n].ki_d.level; 1044 } 1045 1046 while (nsrc) { 1047 if (src < dst) { 1048 kn = ki[src]; 1049 memmove(ki + src, ki + src + 1, 1050 (dst - src + ndst - 1) * sizeof *ki); 1051 ki[dst + ndst - 1] = kn; 1052 nsrc--; 1053 dst--; 1054 ndst++; 1055 } else if (src != dst + ndst) { 1056 kn = ki[src]; 1057 memmove(ki + dst + ndst + 1, ki + dst + ndst, 1058 (src - dst - ndst) * sizeof *ki); 1059 ki[dst + ndst] = kn; 1060 ndst++; 1061 nsrc--; 1062 src++; 1063 } else { 1064 ndst += nsrc; 1065 src += nsrc; 1066 nsrc = 0; 1067 } 1068 } 1069 } 1070 1071 /* 1072 * Now populate ki_d.prefix (instead of ki_d.level) with the command 1073 * prefix used to show descendancies. 1074 */ 1075 path = malloc((maxlvl + 7) / 8); 1076 memset(path, '\0', (maxlvl + 7) / 8); 1077 for (src = 0; src < items; src++) { 1078 if ((lvl = ki[src].ki_d.level) == 0) { 1079 ki[src].ki_d.prefix = NULL; 1080 continue; 1081 } 1082 if ((ki[src].ki_d.prefix = malloc(lvl * 2 + 1)) == NULL) 1083 xo_errx(1, "malloc failed"); 1084 for (n = 0; n < lvl - 2; n++) { 1085 ki[src].ki_d.prefix[n * 2] = 1086 path[n / 8] & 1 << (n % 8) ? '|' : ' '; 1087 ki[src].ki_d.prefix[n * 2 + 1] = ' '; 1088 } 1089 if (n == lvl - 2) { 1090 /* Have I any more siblings? */ 1091 for (siblings = 0, dst = src + 1; dst < items; dst++) { 1092 if (ki[dst].ki_d.level > lvl) 1093 continue; 1094 if (ki[dst].ki_d.level == lvl) 1095 siblings = 1; 1096 break; 1097 } 1098 if (siblings) 1099 path[n / 8] |= 1 << (n % 8); 1100 else 1101 path[n / 8] &= ~(1 << (n % 8)); 1102 ki[src].ki_d.prefix[n * 2] = siblings ? '|' : '`'; 1103 ki[src].ki_d.prefix[n * 2 + 1] = '-'; 1104 n++; 1105 } 1106 strcpy(ki[src].ki_d.prefix + n * 2, "- "); 1107 } 1108 free(path); 1109 } 1110 1111 static void * 1112 expand_list(struct listinfo *inf) 1113 { 1114 void *newlist; 1115 int newmax; 1116 1117 newmax = (inf->maxcount + 1) << 1; 1118 newlist = realloc(inf->l.ptr, newmax * inf->elemsize); 1119 if (newlist == NULL) { 1120 free(inf->l.ptr); 1121 xo_errx(1, "realloc to %d %ss failed", newmax, inf->lname); 1122 } 1123 inf->maxcount = newmax; 1124 inf->l.ptr = newlist; 1125 1126 return (newlist); 1127 } 1128 1129 static void 1130 free_list(struct listinfo *inf) 1131 { 1132 1133 inf->count = inf->elemsize = inf->maxcount = 0; 1134 if (inf->l.ptr != NULL) 1135 free(inf->l.ptr); 1136 inf->addelem = NULL; 1137 inf->lname = NULL; 1138 inf->l.ptr = NULL; 1139 } 1140 1141 static void 1142 init_list(struct listinfo *inf, addelem_rtn artn, int elemsize, 1143 const char *lname) 1144 { 1145 1146 inf->count = inf->maxcount = 0; 1147 inf->elemsize = elemsize; 1148 inf->addelem = artn; 1149 inf->lname = lname; 1150 inf->l.ptr = NULL; 1151 } 1152 1153 VARENT * 1154 find_varentry(VAR *v) 1155 { 1156 struct varent *vent; 1157 1158 STAILQ_FOREACH(vent, &varlist, next_ve) { 1159 if (strcmp(vent->var->name, v->name) == 0) 1160 return vent; 1161 } 1162 return NULL; 1163 } 1164 1165 static void 1166 scanvars(void) 1167 { 1168 struct varent *vent; 1169 VAR *v; 1170 1171 STAILQ_FOREACH(vent, &varlist, next_ve) { 1172 v = vent->var; 1173 if (v->flag & USER) 1174 needuser = 1; 1175 if (v->flag & COMM) 1176 needcomm = 1; 1177 } 1178 } 1179 1180 static void 1181 format_output(KINFO *ki) 1182 { 1183 struct varent *vent; 1184 VAR *v; 1185 KINFO_STR *ks; 1186 char *str; 1187 int len; 1188 1189 STAILQ_INIT(&ki->ki_ks); 1190 STAILQ_FOREACH(vent, &varlist, next_ve) { 1191 v = vent->var; 1192 str = (v->oproc)(ki, vent); 1193 ks = malloc(sizeof(*ks)); 1194 if (ks == NULL) 1195 xo_errx(1, "malloc failed"); 1196 ks->ks_str = str; 1197 STAILQ_INSERT_TAIL(&ki->ki_ks, ks, ks_next); 1198 if (str != NULL) { 1199 len = strlen(str); 1200 } else 1201 len = 1; /* "-" */ 1202 if (v->width < len) 1203 v->width = len; 1204 } 1205 } 1206 1207 static void 1208 sizevars(void) 1209 { 1210 struct varent *vent; 1211 VAR *v; 1212 int i; 1213 1214 STAILQ_FOREACH(vent, &varlist, next_ve) { 1215 v = vent->var; 1216 i = strlen(vent->header); 1217 if (v->width < i) 1218 v->width = i; 1219 } 1220 } 1221 1222 static const char * 1223 fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki, 1224 char *comm, char *thread, int maxlen) 1225 { 1226 const char *s; 1227 1228 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, 1229 showthreads && ki->ki_p->ki_numthreads > 1 ? thread : NULL, maxlen); 1230 return (s); 1231 } 1232 1233 #define UREADOK(ki) (forceuread || (ki->ki_p->ki_flag & P_INMEM)) 1234 1235 static void 1236 saveuser(KINFO *ki) 1237 { 1238 char *argsp; 1239 1240 if (ki->ki_p->ki_flag & P_INMEM) { 1241 /* 1242 * The u-area might be swapped out, and we can't get 1243 * at it because we have a crashdump and no swap. 1244 * If it's here fill in these fields, otherwise, just 1245 * leave them 0. 1246 */ 1247 ki->ki_valid = 1; 1248 } else 1249 ki->ki_valid = 0; 1250 /* 1251 * save arguments if needed 1252 */ 1253 if (needcomm) { 1254 if (ki->ki_p->ki_stat == SZOMB) 1255 ki->ki_args = strdup("<defunct>"); 1256 else if (UREADOK(ki) || (ki->ki_p->ki_args != NULL)) 1257 ki->ki_args = fmt(kvm_getargv, ki, 1258 ki->ki_p->ki_comm, ki->ki_p->ki_tdname, MAXCOMLEN); 1259 else { 1260 asprintf(&argsp, "(%s)", ki->ki_p->ki_comm); 1261 ki->ki_args = argsp; 1262 } 1263 if (ki->ki_args == NULL) 1264 xo_errx(1, "malloc failed"); 1265 } else { 1266 ki->ki_args = NULL; 1267 } 1268 if (needenv) { 1269 if (UREADOK(ki)) 1270 ki->ki_env = fmt(kvm_getenvv, ki, 1271 (char *)NULL, (char *)NULL, 0); 1272 else 1273 ki->ki_env = strdup("()"); 1274 if (ki->ki_env == NULL) 1275 xo_errx(1, "malloc failed"); 1276 } else { 1277 ki->ki_env = NULL; 1278 } 1279 } 1280 1281 /* A macro used to improve the readability of pscomp(). */ 1282 #define DIFF_RETURN(a, b, field) do { \ 1283 if ((a)->field != (b)->field) \ 1284 return (((a)->field < (b)->field) ? -1 : 1); \ 1285 } while (0) 1286 1287 static int 1288 pscomp(const void *a, const void *b) 1289 { 1290 const KINFO *ka, *kb; 1291 1292 ka = a; 1293 kb = b; 1294 /* SORTCPU and SORTMEM are sorted in descending order. */ 1295 if (sortby == SORTCPU) 1296 DIFF_RETURN(kb, ka, ki_pcpu); 1297 if (sortby == SORTMEM) 1298 DIFF_RETURN(kb, ka, ki_memsize); 1299 /* 1300 * TTY's are sorted in ascending order, except that all NODEV 1301 * processes come before all processes with a device. 1302 */ 1303 if (ka->ki_p->ki_tdev != kb->ki_p->ki_tdev) { 1304 if (ka->ki_p->ki_tdev == NODEV) 1305 return (-1); 1306 if (kb->ki_p->ki_tdev == NODEV) 1307 return (1); 1308 DIFF_RETURN(ka, kb, ki_p->ki_tdev); 1309 } 1310 1311 /* PID's and TID's (threads) are sorted in ascending order. */ 1312 DIFF_RETURN(ka, kb, ki_p->ki_pid); 1313 DIFF_RETURN(ka, kb, ki_p->ki_tid); 1314 return (0); 1315 } 1316 #undef DIFF_RETURN 1317 1318 /* 1319 * ICK (all for getopt), would rather hide the ugliness 1320 * here than taint the main code. 1321 * 1322 * ps foo -> ps -foo 1323 * ps 34 -> ps -p34 1324 * 1325 * The old convention that 't' with no trailing tty arg means the users 1326 * tty, is only supported if argv[1] doesn't begin with a '-'. This same 1327 * feature is available with the option 'T', which takes no argument. 1328 */ 1329 static char * 1330 kludge_oldps_options(const char *optlist, char *origval, const char *nextarg) 1331 { 1332 size_t len; 1333 char *argp, *cp, *newopts, *ns, *optp, *pidp; 1334 1335 /* 1336 * See if the original value includes any option which takes an 1337 * argument (and will thus use up the remainder of the string). 1338 */ 1339 argp = NULL; 1340 if (optlist != NULL) { 1341 for (cp = origval; *cp != '\0'; cp++) { 1342 optp = strchr(optlist, *cp); 1343 if ((optp != NULL) && *(optp + 1) == ':') { 1344 argp = cp; 1345 break; 1346 } 1347 } 1348 } 1349 if (argp != NULL && *origval == '-') 1350 return (origval); 1351 1352 /* 1353 * if last letter is a 't' flag with no argument (in the context 1354 * of the oldps options -- option string NOT starting with a '-' -- 1355 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 1356 * 1357 * However, if a flag accepting a string argument is found earlier 1358 * in the option string (including a possible `t' flag), then the 1359 * remainder of the string must be the argument to that flag; so 1360 * do not modify that argument. Note that a trailing `t' would 1361 * cause argp to be set, if argp was not already set by some 1362 * earlier option. 1363 */ 1364 len = strlen(origval); 1365 cp = origval + len - 1; 1366 pidp = NULL; 1367 if (*cp == 't' && *origval != '-' && cp == argp) { 1368 if (nextarg == NULL || *nextarg == '-' || isdigitch(*nextarg)) 1369 *cp = 'T'; 1370 } else if (argp == NULL) { 1371 /* 1372 * The original value did not include any option which takes 1373 * an argument (and that would include `p' and `t'), so check 1374 * the value for trailing number, or comma-separated list of 1375 * numbers, which we will treat as a pid request. 1376 */ 1377 if (isdigitch(*cp)) { 1378 while (cp >= origval && (*cp == ',' || isdigitch(*cp))) 1379 --cp; 1380 pidp = cp + 1; 1381 } 1382 } 1383 1384 /* 1385 * If nothing needs to be added to the string, then return 1386 * the "original" (although possibly modified) value. 1387 */ 1388 if (*origval == '-' && pidp == NULL) 1389 return (origval); 1390 1391 /* 1392 * Create a copy of the string to add '-' and/or 'p' to the 1393 * original value. 1394 */ 1395 if ((newopts = ns = malloc(len + 3)) == NULL) 1396 xo_errx(1, "malloc failed"); 1397 1398 if (*origval != '-') 1399 *ns++ = '-'; /* add option flag */ 1400 1401 if (pidp == NULL) 1402 strcpy(ns, origval); 1403 else { 1404 /* 1405 * Copy everything before the pid string, add the `p', 1406 * and then copy the pid string. 1407 */ 1408 len = pidp - origval; 1409 memcpy(ns, origval, len); 1410 ns += len; 1411 *ns++ = 'p'; 1412 strcpy(ns, pidp); 1413 } 1414 1415 return (newopts); 1416 } 1417 1418 static void 1419 pidmax_init(void) 1420 { 1421 size_t intsize; 1422 1423 intsize = sizeof(pid_max); 1424 if (sysctlbyname("kern.pid_max", &pid_max, &intsize, NULL, 0) < 0) { 1425 xo_warn("unable to read kern.pid_max"); 1426 pid_max = 99999; 1427 } 1428 } 1429 1430 static void 1431 usage(void) 1432 { 1433 #define SINGLE_OPTS "[-aCcde" OPT_LAZY_f "HhjlmrSTuvwXxZ]" 1434 1435 (void)xo_error("%s\n%s\n%s\n%s\n", 1436 "usage: ps " SINGLE_OPTS " [-O fmt | -o fmt] [-G gid[,gid...]]", 1437 " [-J jid[,jid...]] [-M core] [-N system]", 1438 " [-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]", 1439 " ps [-L]"); 1440 exit(1); 1441 } 1442