1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1990, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * ------+---------+---------+-------- + --------+---------+---------+---------* 31 * Copyright (c) 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>. 32 * All rights reserved. 33 * 34 * Significant modifications made to bring `ps' options somewhat closer 35 * to the standard for `ps' as described in SingleUnixSpec-v3. 36 * ------+---------+---------+-------- + --------+---------+---------+---------* 37 */ 38 39 #ifndef lint 40 static const char copyright[] = 41 "@(#) Copyright (c) 1990, 1993, 1994\n\ 42 The Regents of the University of California. All rights reserved.\n"; 43 #endif /* not lint */ 44 45 #if 0 46 #ifndef lint 47 static char sccsid[] = "@(#)ps.c 8.4 (Berkeley) 4/2/94"; 48 #endif /* not lint */ 49 #endif 50 51 #include <sys/cdefs.h> 52 __FBSDID("$FreeBSD$"); 53 54 #include <sys/param.h> 55 #include <sys/jail.h> 56 #include <sys/proc.h> 57 #include <sys/user.h> 58 #include <sys/stat.h> 59 #include <sys/ioctl.h> 60 #include <sys/sysctl.h> 61 #include <sys/mount.h> 62 63 #include <ctype.h> 64 #include <err.h> 65 #include <errno.h> 66 #include <fcntl.h> 67 #include <grp.h> 68 #include <jail.h> 69 #include <kvm.h> 70 #include <limits.h> 71 #include <locale.h> 72 #include <paths.h> 73 #include <pwd.h> 74 #include <stdio.h> 75 #include <stdlib.h> 76 #include <string.h> 77 #include <unistd.h> 78 #include <libxo/xo.h> 79 80 #include "ps.h" 81 82 #define _PATH_PTS "/dev/pts/" 83 84 #define W_SEP " \t" /* "Whitespace" list separators */ 85 #define T_SEP "," /* "Terminate-element" list separators */ 86 87 #ifdef LAZY_PS 88 #define DEF_UREAD 0 89 #define OPT_LAZY_f "f" 90 #else 91 #define DEF_UREAD 1 /* Always do the more-expensive read. */ 92 #define OPT_LAZY_f /* I.e., the `-f' option is not added. */ 93 #endif 94 95 /* 96 * isdigit takes an `int', but expects values in the range of unsigned char. 97 * This wrapper ensures that values from a 'char' end up in the correct range. 98 */ 99 #define isdigitch(Anychar) isdigit((u_char)(Anychar)) 100 101 int cflag; /* -c */ 102 int eval; /* Exit value */ 103 time_t now; /* Current time(3) value */ 104 int rawcpu; /* -C */ 105 int sumrusage; /* -S */ 106 int termwidth; /* Width of the screen (0 == infinity). */ 107 int showthreads; /* will threads be shown? */ 108 109 struct velisthead varlist = STAILQ_HEAD_INITIALIZER(varlist); 110 111 static int forceuread = DEF_UREAD; /* Do extra work to get u-area. */ 112 static kvm_t *kd; 113 static int needcomm; /* -o "command" */ 114 static int needenv; /* -e */ 115 static int needuser; /* -o "user" */ 116 static int optfatal; /* Fatal error parsing some list-option. */ 117 static int pid_max; /* kern.max_pid */ 118 119 static enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 120 121 struct listinfo; 122 typedef int addelem_rtn(struct listinfo *_inf, const char *_elem); 123 124 struct listinfo { 125 int count; 126 int maxcount; 127 int elemsize; 128 addelem_rtn *addelem; 129 const char *lname; 130 union { 131 gid_t *gids; 132 int *jids; 133 pid_t *pids; 134 dev_t *ttys; 135 uid_t *uids; 136 void *ptr; 137 } l; 138 }; 139 140 static int addelem_gid(struct listinfo *, const char *); 141 static int addelem_jid(struct listinfo *, const char *); 142 static int addelem_pid(struct listinfo *, const char *); 143 static int addelem_tty(struct listinfo *, const char *); 144 static int addelem_uid(struct listinfo *, const char *); 145 static void add_list(struct listinfo *, const char *); 146 static void descendant_sort(KINFO *, int); 147 static void format_output(KINFO *); 148 static void *expand_list(struct listinfo *); 149 static const char * 150 fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int), 151 KINFO *, char *, char *, int); 152 static void free_list(struct listinfo *); 153 static void init_list(struct listinfo *, addelem_rtn, int, const char *); 154 static char *kludge_oldps_options(const char *, char *, const char *); 155 static int pscomp(const void *, const void *); 156 static void saveuser(KINFO *); 157 static void scanvars(void); 158 static void sizevars(void); 159 static void pidmax_init(void); 160 static void usage(void); 161 162 static char dfmt[] = "pid,tt,state,time,command"; 163 static char jfmt[] = "user,pid,ppid,pgid,sid,jobc,state,tt,time,command"; 164 static char lfmt[] = "uid,pid,ppid,cpu,pri,nice,vsz,rss,mwchan,state," 165 "tt,time,command"; 166 static char o1[] = "pid"; 167 static char o2[] = "tt,state,time,command"; 168 static char ufmt[] = "user,pid,%cpu,%mem,vsz,rss,tt,state,start,time,command"; 169 static char vfmt[] = "pid,state,time,sl,re,pagein,vsz,rss,lim,tsiz," 170 "%cpu,%mem,command"; 171 static char Zfmt[] = "label"; 172 173 #define PS_ARGS "AaCcde" OPT_LAZY_f "G:gHhjJ:LlM:mN:O:o:p:rSTt:U:uvwXxZ" 174 175 int 176 main(int argc, char *argv[]) 177 { 178 struct listinfo gidlist, jidlist, pgrplist, pidlist; 179 struct listinfo ruidlist, sesslist, ttylist, uidlist; 180 struct kinfo_proc *kp; 181 KINFO *kinfo = NULL, *next_KINFO; 182 KINFO_STR *ks; 183 struct varent *vent; 184 struct winsize ws = { .ws_row = 0 }; 185 const char *nlistf, *memf, *str; 186 char *cols; 187 int all, ch, elem, flag, _fmt, i, lineno, linelen, left; 188 int descendancy, nentries, nkept, nselectors; 189 int prtheader, wflag, what, xkeep, xkeep_implied; 190 int fwidthmin, fwidthmax; 191 char errbuf[_POSIX2_LINE_MAX]; 192 char fmtbuf[_POSIX2_LINE_MAX]; 193 194 (void) setlocale(LC_ALL, ""); 195 time(&now); /* Used by routines in print.c. */ 196 197 /* 198 * Compute default output line length before processing options. 199 * If COLUMNS is set, use it. Otherwise, if this is part of an 200 * interactive job (i.e. one associated with a terminal), use 201 * the terminal width. "Interactive" is determined by whether 202 * any of stdout, stderr, or stdin is a terminal. The intent 203 * is that "ps", "ps | more", and "ps | grep" all use the same 204 * default line length unless -w is specified. 205 * 206 * If not interactive, the default length was traditionally 79. 207 * It has been changed to unlimited. This is mostly for the 208 * benefit of non-interactive scripts, which arguably should 209 * use -ww, but is compatible with Linux. 210 */ 211 if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0') 212 termwidth = atoi(cols); 213 else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 214 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 215 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) || 216 ws.ws_col == 0) 217 termwidth = UNLIMITED; 218 else 219 termwidth = ws.ws_col - 1; 220 221 /* 222 * Hide a number of option-processing kludges in a separate routine, 223 * to support some historical BSD behaviors, such as `ps axu'. 224 */ 225 if (argc > 1) 226 argv[1] = kludge_oldps_options(PS_ARGS, argv[1], argv[2]); 227 228 pidmax_init(); 229 230 all = descendancy = _fmt = nselectors = optfatal = 0; 231 prtheader = showthreads = wflag = xkeep_implied = 0; 232 xkeep = -1; /* Neither -x nor -X. */ 233 init_list(&gidlist, addelem_gid, sizeof(gid_t), "group"); 234 init_list(&jidlist, addelem_jid, sizeof(int), "jail id"); 235 init_list(&pgrplist, addelem_pid, sizeof(pid_t), "process group"); 236 init_list(&pidlist, addelem_pid, sizeof(pid_t), "process id"); 237 init_list(&ruidlist, addelem_uid, sizeof(uid_t), "ruser"); 238 init_list(&sesslist, addelem_pid, sizeof(pid_t), "session id"); 239 init_list(&ttylist, addelem_tty, sizeof(dev_t), "tty"); 240 init_list(&uidlist, addelem_uid, sizeof(uid_t), "user"); 241 memf = _PATH_DEVNULL; 242 nlistf = NULL; 243 244 argc = xo_parse_args(argc, argv); 245 if (argc < 0) 246 exit(1); 247 248 while ((ch = getopt(argc, argv, PS_ARGS)) != -1) 249 switch (ch) { 250 case 'A': 251 /* 252 * Exactly the same as `-ax'. This has been 253 * added for compatibility with SUSv3, but for 254 * now it will not be described in the man page. 255 */ 256 all = xkeep = 1; 257 break; 258 case 'a': 259 all = 1; 260 break; 261 case 'C': 262 rawcpu = 1; 263 break; 264 case 'c': 265 cflag = 1; 266 break; 267 case 'd': 268 descendancy = 1; 269 break; 270 case 'e': /* XXX set ufmt */ 271 needenv = 1; 272 break; 273 #ifdef LAZY_PS 274 case 'f': 275 if (getuid() == 0 || getgid() == 0) 276 forceuread = 1; 277 break; 278 #endif 279 case 'G': 280 add_list(&gidlist, optarg); 281 xkeep_implied = 1; 282 nselectors++; 283 break; 284 case 'g': 285 #if 0 286 /*- 287 * XXX - This SUSv3 behavior is still under debate 288 * since it conflicts with the (undocumented) 289 * `-g' option. So we skip it for now. 290 */ 291 add_list(&pgrplist, optarg); 292 xkeep_implied = 1; 293 nselectors++; 294 break; 295 #else 296 /* The historical BSD-ish (from SunOS) behavior. */ 297 break; /* no-op */ 298 #endif 299 case 'H': 300 showthreads = KERN_PROC_INC_THREAD; 301 break; 302 case 'h': 303 prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 304 break; 305 case 'J': 306 add_list(&jidlist, optarg); 307 xkeep_implied = 1; 308 nselectors++; 309 break; 310 case 'j': 311 parsefmt(jfmt, 0); 312 _fmt = 1; 313 jfmt[0] = '\0'; 314 break; 315 case 'L': 316 showkey(); 317 exit(0); 318 case 'l': 319 parsefmt(lfmt, 0); 320 _fmt = 1; 321 lfmt[0] = '\0'; 322 break; 323 case 'M': 324 memf = optarg; 325 break; 326 case 'm': 327 sortby = SORTMEM; 328 break; 329 case 'N': 330 nlistf = optarg; 331 break; 332 case 'O': 333 parsefmt(o1, 1); 334 parsefmt(optarg, 1); 335 parsefmt(o2, 1); 336 o1[0] = o2[0] = '\0'; 337 _fmt = 1; 338 break; 339 case 'o': 340 parsefmt(optarg, 1); 341 _fmt = 1; 342 break; 343 case 'p': 344 add_list(&pidlist, optarg); 345 /* 346 * Note: `-p' does not *set* xkeep, but any values 347 * from pidlist are checked before xkeep is. That 348 * way they are always matched, even if the user 349 * specifies `-X'. 350 */ 351 nselectors++; 352 break; 353 #if 0 354 case 'R': 355 /*- 356 * XXX - This un-standard option is still under 357 * debate. This is what SUSv3 defines as 358 * the `-U' option, and while it would be 359 * nice to have, it could cause even more 360 * confusion to implement it as `-R'. 361 */ 362 add_list(&ruidlist, optarg); 363 xkeep_implied = 1; 364 nselectors++; 365 break; 366 #endif 367 case 'r': 368 sortby = SORTCPU; 369 break; 370 case 'S': 371 sumrusage = 1; 372 break; 373 #if 0 374 case 's': 375 /*- 376 * XXX - This non-standard option is still under 377 * debate. This *is* supported on Solaris, 378 * Linux, and IRIX, but conflicts with `-s' 379 * on NetBSD and maybe some older BSD's. 380 */ 381 add_list(&sesslist, optarg); 382 xkeep_implied = 1; 383 nselectors++; 384 break; 385 #endif 386 case 'T': 387 if ((optarg = ttyname(STDIN_FILENO)) == NULL) 388 xo_errx(1, "stdin: not a terminal"); 389 /* FALLTHROUGH */ 390 case 't': 391 add_list(&ttylist, optarg); 392 xkeep_implied = 1; 393 nselectors++; 394 break; 395 case 'U': 396 /* This is what SUSv3 defines as the `-u' option. */ 397 add_list(&uidlist, optarg); 398 xkeep_implied = 1; 399 nselectors++; 400 break; 401 case 'u': 402 parsefmt(ufmt, 0); 403 sortby = SORTCPU; 404 _fmt = 1; 405 ufmt[0] = '\0'; 406 break; 407 case 'v': 408 parsefmt(vfmt, 0); 409 sortby = SORTMEM; 410 _fmt = 1; 411 vfmt[0] = '\0'; 412 break; 413 case 'w': 414 if (wflag) 415 termwidth = UNLIMITED; 416 else if (termwidth < 131 && termwidth != UNLIMITED) 417 termwidth = 131; 418 wflag++; 419 break; 420 case 'X': 421 /* 422 * Note that `-X' and `-x' are not standard "selector" 423 * options. For most selector-options, we check *all* 424 * processes to see if any are matched by the given 425 * value(s). After we have a set of all the matched 426 * processes, then `-X' and `-x' govern whether we 427 * modify that *matched* set for processes which do 428 * not have a controlling terminal. `-X' causes 429 * those processes to be deleted from the matched 430 * set, while `-x' causes them to be kept. 431 */ 432 xkeep = 0; 433 break; 434 case 'x': 435 xkeep = 1; 436 break; 437 case 'Z': 438 parsefmt(Zfmt, 0); 439 Zfmt[0] = '\0'; 440 break; 441 case '?': 442 default: 443 usage(); 444 } 445 argc -= optind; 446 argv += optind; 447 448 /* 449 * If there arguments after processing all the options, attempt 450 * to treat them as a list of process ids. 451 */ 452 while (*argv) { 453 if (!isdigitch(**argv)) 454 break; 455 add_list(&pidlist, *argv); 456 argv++; 457 } 458 if (*argv) { 459 xo_warnx("illegal argument: %s\n", *argv); 460 usage(); 461 } 462 if (optfatal) 463 exit(1); /* Error messages already printed. */ 464 if (xkeep < 0) /* Neither -X nor -x was specified. */ 465 xkeep = xkeep_implied; 466 467 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 468 if (kd == NULL) 469 xo_errx(1, "%s", errbuf); 470 471 if (!_fmt) 472 parsefmt(dfmt, 0); 473 474 if (!all && nselectors == 0) { 475 uidlist.l.ptr = malloc(sizeof(uid_t)); 476 if (uidlist.l.ptr == NULL) 477 xo_errx(1, "malloc failed"); 478 nselectors = 1; 479 uidlist.count = uidlist.maxcount = 1; 480 *uidlist.l.uids = getuid(); 481 } 482 483 /* 484 * scan requested variables, noting what structures are needed, 485 * and adjusting header widths as appropriate. 486 */ 487 scanvars(); 488 489 /* 490 * Get process list. If the user requested just one selector- 491 * option, then kvm_getprocs can be asked to return just those 492 * processes. Otherwise, have it return all processes, and 493 * then this routine will search that full list and select the 494 * processes which match any of the user's selector-options. 495 */ 496 what = showthreads != 0 ? KERN_PROC_ALL : KERN_PROC_PROC; 497 flag = 0; 498 if (nselectors == 1) { 499 if (gidlist.count == 1) { 500 what = KERN_PROC_RGID | showthreads; 501 flag = *gidlist.l.gids; 502 nselectors = 0; 503 } else if (pgrplist.count == 1) { 504 what = KERN_PROC_PGRP | showthreads; 505 flag = *pgrplist.l.pids; 506 nselectors = 0; 507 } else if (pidlist.count == 1 && !descendancy) { 508 what = KERN_PROC_PID | showthreads; 509 flag = *pidlist.l.pids; 510 nselectors = 0; 511 } else if (ruidlist.count == 1) { 512 what = KERN_PROC_RUID | showthreads; 513 flag = *ruidlist.l.uids; 514 nselectors = 0; 515 } else if (sesslist.count == 1) { 516 what = KERN_PROC_SESSION | showthreads; 517 flag = *sesslist.l.pids; 518 nselectors = 0; 519 } else if (ttylist.count == 1) { 520 what = KERN_PROC_TTY | showthreads; 521 flag = *ttylist.l.ttys; 522 nselectors = 0; 523 } else if (uidlist.count == 1) { 524 what = KERN_PROC_UID | showthreads; 525 flag = *uidlist.l.uids; 526 nselectors = 0; 527 } 528 } 529 530 /* 531 * select procs 532 */ 533 nentries = -1; 534 kp = kvm_getprocs(kd, what, flag, &nentries); 535 /* 536 * Ignore ESRCH to preserve behaviour of "ps -p nonexistent-pid" 537 * not reporting an error. 538 */ 539 if ((kp == NULL && errno != ESRCH) || (kp != NULL && nentries < 0)) 540 xo_errx(1, "%s", kvm_geterr(kd)); 541 nkept = 0; 542 if (descendancy) 543 for (elem = 0; elem < pidlist.count; elem++) 544 for (i = 0; i < nentries; i++) 545 if (kp[i].ki_ppid == pidlist.l.pids[elem]) { 546 if (pidlist.count >= pidlist.maxcount) 547 expand_list(&pidlist); 548 pidlist.l.pids[pidlist.count++] = kp[i].ki_pid; 549 } 550 if (nentries > 0) { 551 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL) 552 xo_errx(1, "malloc failed"); 553 for (i = nentries; --i >= 0; ++kp) { 554 /* 555 * If the user specified multiple selection-criteria, 556 * then keep any process matched by the inclusive OR 557 * of all the selection-criteria given. 558 */ 559 if (pidlist.count > 0) { 560 for (elem = 0; elem < pidlist.count; elem++) 561 if (kp->ki_pid == pidlist.l.pids[elem]) 562 goto keepit; 563 } 564 /* 565 * Note that we had to process pidlist before 566 * filtering out processes which do not have 567 * a controlling terminal. 568 */ 569 if (xkeep == 0) { 570 if ((kp->ki_tdev == NODEV || 571 (kp->ki_flag & P_CONTROLT) == 0)) 572 continue; 573 } 574 if (nselectors == 0) 575 goto keepit; 576 if (gidlist.count > 0) { 577 for (elem = 0; elem < gidlist.count; elem++) 578 if (kp->ki_rgid == gidlist.l.gids[elem]) 579 goto keepit; 580 } 581 if (jidlist.count > 0) { 582 for (elem = 0; elem < jidlist.count; elem++) 583 if (kp->ki_jid == jidlist.l.jids[elem]) 584 goto keepit; 585 } 586 if (pgrplist.count > 0) { 587 for (elem = 0; elem < pgrplist.count; elem++) 588 if (kp->ki_pgid == 589 pgrplist.l.pids[elem]) 590 goto keepit; 591 } 592 if (ruidlist.count > 0) { 593 for (elem = 0; elem < ruidlist.count; elem++) 594 if (kp->ki_ruid == 595 ruidlist.l.uids[elem]) 596 goto keepit; 597 } 598 if (sesslist.count > 0) { 599 for (elem = 0; elem < sesslist.count; elem++) 600 if (kp->ki_sid == sesslist.l.pids[elem]) 601 goto keepit; 602 } 603 if (ttylist.count > 0) { 604 for (elem = 0; elem < ttylist.count; elem++) 605 if (kp->ki_tdev == ttylist.l.ttys[elem]) 606 goto keepit; 607 } 608 if (uidlist.count > 0) { 609 for (elem = 0; elem < uidlist.count; elem++) 610 if (kp->ki_uid == uidlist.l.uids[elem]) 611 goto keepit; 612 } 613 /* 614 * This process did not match any of the user's 615 * selector-options, so skip the process. 616 */ 617 continue; 618 619 keepit: 620 next_KINFO = &kinfo[nkept]; 621 next_KINFO->ki_p = kp; 622 next_KINFO->ki_d.level = 0; 623 next_KINFO->ki_d.prefix = NULL; 624 next_KINFO->ki_pcpu = getpcpu(next_KINFO); 625 if (sortby == SORTMEM) 626 next_KINFO->ki_memsize = kp->ki_tsize + 627 kp->ki_dsize + kp->ki_ssize; 628 if (needuser) 629 saveuser(next_KINFO); 630 nkept++; 631 } 632 } 633 634 sizevars(); 635 636 if (nkept == 0) { 637 printheader(); 638 xo_finish(); 639 exit(1); 640 } 641 642 /* 643 * sort proc list 644 */ 645 qsort(kinfo, nkept, sizeof(KINFO), pscomp); 646 647 /* 648 * We want things in descendant order 649 */ 650 if (descendancy) 651 descendant_sort(kinfo, nkept); 652 653 654 /* 655 * Prepare formatted output. 656 */ 657 for (i = 0; i < nkept; i++) 658 format_output(&kinfo[i]); 659 660 /* 661 * Print header. 662 */ 663 xo_open_container("process-information"); 664 printheader(); 665 if (xo_get_style(NULL) != XO_STYLE_TEXT) 666 termwidth = UNLIMITED; 667 668 /* 669 * Output formatted lines. 670 */ 671 xo_open_list("process"); 672 for (i = lineno = 0; i < nkept; i++) { 673 linelen = 0; 674 xo_open_instance("process"); 675 STAILQ_FOREACH(vent, &varlist, next_ve) { 676 ks = STAILQ_FIRST(&kinfo[i].ki_ks); 677 STAILQ_REMOVE_HEAD(&kinfo[i].ki_ks, ks_next); 678 /* Truncate rightmost column if necessary. */ 679 fwidthmax = _POSIX2_LINE_MAX; 680 if (STAILQ_NEXT(vent, next_ve) == NULL && 681 termwidth != UNLIMITED && ks->ks_str != NULL) { 682 left = termwidth - linelen; 683 if (left > 0 && left < (int)strlen(ks->ks_str)) 684 fwidthmax = left; 685 } 686 687 str = ks->ks_str; 688 if (str == NULL) 689 str = "-"; 690 /* No padding for the last column, if it's LJUST. */ 691 fwidthmin = (xo_get_style(NULL) != XO_STYLE_TEXT || 692 (STAILQ_NEXT(vent, next_ve) == NULL && 693 (vent->var->flag & LJUST))) ? 0 : vent->var->width; 694 snprintf(fmtbuf, sizeof(fmtbuf), "{:%s/%%%s%d..%dhs}", 695 vent->var->field ? vent->var->field : vent->var->name, 696 (vent->var->flag & LJUST) ? "-" : "", 697 fwidthmin, fwidthmax); 698 xo_emit(fmtbuf, str); 699 linelen += fwidthmin; 700 701 if (ks->ks_str != NULL) { 702 free(ks->ks_str); 703 ks->ks_str = NULL; 704 } 705 free(ks); 706 ks = NULL; 707 708 if (STAILQ_NEXT(vent, next_ve) != NULL) { 709 xo_emit("{P: }"); 710 linelen++; 711 } 712 } 713 xo_emit("\n"); 714 xo_close_instance("process"); 715 if (prtheader && lineno++ == prtheader - 4) { 716 xo_emit("\n"); 717 printheader(); 718 lineno = 0; 719 } 720 } 721 xo_close_list("process"); 722 xo_close_container("process-information"); 723 xo_finish(); 724 725 free_list(&gidlist); 726 free_list(&jidlist); 727 free_list(&pidlist); 728 free_list(&pgrplist); 729 free_list(&ruidlist); 730 free_list(&sesslist); 731 free_list(&ttylist); 732 free_list(&uidlist); 733 for (i = 0; i < nkept; i++) 734 free(kinfo[i].ki_d.prefix); 735 free(kinfo); 736 737 exit(eval); 738 } 739 740 static int 741 addelem_gid(struct listinfo *inf, const char *elem) 742 { 743 struct group *grp; 744 const char *nameorID; 745 char *endp; 746 u_long bigtemp; 747 748 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 749 if (*elem == '\0') 750 xo_warnx("Invalid (zero-length) %s name", inf->lname); 751 else 752 xo_warnx("%s name too long: %s", inf->lname, elem); 753 optfatal = 1; 754 return (0); /* Do not add this value. */ 755 } 756 757 /* 758 * SUSv3 states that `ps -G grouplist' should match "real-group 759 * ID numbers", and does not mention group-names. I do want to 760 * also support group-names, so this tries for a group-id first, 761 * and only tries for a name if that doesn't work. This is the 762 * opposite order of what is done in addelem_uid(), but in 763 * practice the order would only matter for group-names which 764 * are all-numeric. 765 */ 766 grp = NULL; 767 nameorID = "named"; 768 errno = 0; 769 bigtemp = strtoul(elem, &endp, 10); 770 if (errno == 0 && *endp == '\0' && bigtemp <= GID_MAX) { 771 nameorID = "name or ID matches"; 772 grp = getgrgid((gid_t)bigtemp); 773 } 774 if (grp == NULL) 775 grp = getgrnam(elem); 776 if (grp == NULL) { 777 xo_warnx("No %s %s '%s'", inf->lname, nameorID, elem); 778 optfatal = 1; 779 return (0); 780 } 781 if (inf->count >= inf->maxcount) 782 expand_list(inf); 783 inf->l.gids[(inf->count)++] = grp->gr_gid; 784 return (1); 785 } 786 787 static int 788 addelem_jid(struct listinfo *inf, const char *elem) 789 { 790 int tempid; 791 792 if (*elem == '\0') { 793 warnx("Invalid (zero-length) jail id"); 794 optfatal = 1; 795 return (0); /* Do not add this value. */ 796 } 797 798 tempid = jail_getid(elem); 799 if (tempid < 0) { 800 warnx("Invalid %s: %s", inf->lname, elem); 801 optfatal = 1; 802 return (0); 803 } 804 805 if (inf->count >= inf->maxcount) 806 expand_list(inf); 807 inf->l.jids[(inf->count)++] = tempid; 808 return (1); 809 } 810 811 static int 812 addelem_pid(struct listinfo *inf, const char *elem) 813 { 814 char *endp; 815 long tempid; 816 817 if (*elem == '\0') { 818 xo_warnx("Invalid (zero-length) process id"); 819 optfatal = 1; 820 return (0); /* Do not add this value. */ 821 } 822 823 errno = 0; 824 tempid = strtol(elem, &endp, 10); 825 if (*endp != '\0' || tempid < 0 || elem == endp) { 826 xo_warnx("Invalid %s: %s", inf->lname, elem); 827 errno = ERANGE; 828 } else if (errno != 0 || tempid > pid_max) { 829 xo_warnx("%s too large: %s", inf->lname, elem); 830 errno = ERANGE; 831 } 832 if (errno == ERANGE) { 833 optfatal = 1; 834 return (0); 835 } 836 if (inf->count >= inf->maxcount) 837 expand_list(inf); 838 inf->l.pids[(inf->count)++] = tempid; 839 return (1); 840 } 841 842 /*- 843 * The user can specify a device via one of three formats: 844 * 1) fully qualified, e.g.: /dev/ttyp0 /dev/console /dev/pts/0 845 * 2) missing "/dev", e.g.: ttyp0 console pts/0 846 * 3) two-letters, e.g.: p0 co 0 847 * (matching letters that would be seen in the "TT" column) 848 */ 849 static int 850 addelem_tty(struct listinfo *inf, const char *elem) 851 { 852 const char *ttypath; 853 struct stat sb; 854 char pathbuf[PATH_MAX], pathbuf2[PATH_MAX], pathbuf3[PATH_MAX]; 855 856 ttypath = NULL; 857 pathbuf2[0] = '\0'; 858 pathbuf3[0] = '\0'; 859 switch (*elem) { 860 case '/': 861 ttypath = elem; 862 break; 863 case 'c': 864 if (strcmp(elem, "co") == 0) { 865 ttypath = _PATH_CONSOLE; 866 break; 867 } 868 /* FALLTHROUGH */ 869 default: 870 strlcpy(pathbuf, _PATH_DEV, sizeof(pathbuf)); 871 strlcat(pathbuf, elem, sizeof(pathbuf)); 872 ttypath = pathbuf; 873 if (strncmp(pathbuf, _PATH_TTY, strlen(_PATH_TTY)) == 0) 874 break; 875 if (strncmp(pathbuf, _PATH_PTS, strlen(_PATH_PTS)) == 0) 876 break; 877 if (strcmp(pathbuf, _PATH_CONSOLE) == 0) 878 break; 879 /* Check to see if /dev/tty${elem} exists */ 880 strlcpy(pathbuf2, _PATH_TTY, sizeof(pathbuf2)); 881 strlcat(pathbuf2, elem, sizeof(pathbuf2)); 882 if (stat(pathbuf2, &sb) == 0 && S_ISCHR(sb.st_mode)) { 883 /* No need to repeat stat() && S_ISCHR() checks */ 884 ttypath = NULL; 885 break; 886 } 887 /* Check to see if /dev/pts/${elem} exists */ 888 strlcpy(pathbuf3, _PATH_PTS, sizeof(pathbuf3)); 889 strlcat(pathbuf3, elem, sizeof(pathbuf3)); 890 if (stat(pathbuf3, &sb) == 0 && S_ISCHR(sb.st_mode)) { 891 /* No need to repeat stat() && S_ISCHR() checks */ 892 ttypath = NULL; 893 break; 894 } 895 break; 896 } 897 if (ttypath) { 898 if (stat(ttypath, &sb) == -1) { 899 if (pathbuf3[0] != '\0') 900 xo_warn("%s, %s, and %s", pathbuf3, pathbuf2, 901 ttypath); 902 else 903 xo_warn("%s", ttypath); 904 optfatal = 1; 905 return (0); 906 } 907 if (!S_ISCHR(sb.st_mode)) { 908 if (pathbuf3[0] != '\0') 909 xo_warnx("%s, %s, and %s: Not a terminal", 910 pathbuf3, pathbuf2, ttypath); 911 else 912 xo_warnx("%s: Not a terminal", ttypath); 913 optfatal = 1; 914 return (0); 915 } 916 } 917 if (inf->count >= inf->maxcount) 918 expand_list(inf); 919 inf->l.ttys[(inf->count)++] = sb.st_rdev; 920 return (1); 921 } 922 923 static int 924 addelem_uid(struct listinfo *inf, const char *elem) 925 { 926 struct passwd *pwd; 927 char *endp; 928 u_long bigtemp; 929 930 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 931 if (*elem == '\0') 932 xo_warnx("Invalid (zero-length) %s name", inf->lname); 933 else 934 xo_warnx("%s name too long: %s", inf->lname, elem); 935 optfatal = 1; 936 return (0); /* Do not add this value. */ 937 } 938 939 pwd = getpwnam(elem); 940 if (pwd == NULL) { 941 errno = 0; 942 bigtemp = strtoul(elem, &endp, 10); 943 if (errno != 0 || *endp != '\0' || bigtemp > UID_MAX) 944 xo_warnx("No %s named '%s'", inf->lname, elem); 945 else { 946 /* The string is all digits, so it might be a userID. */ 947 pwd = getpwuid((uid_t)bigtemp); 948 if (pwd == NULL) 949 xo_warnx("No %s name or ID matches '%s'", 950 inf->lname, elem); 951 } 952 } 953 if (pwd == NULL) { 954 /* 955 * These used to be treated as minor warnings (and the 956 * option was simply ignored), but now they are fatal 957 * errors (and the command will be aborted). 958 */ 959 optfatal = 1; 960 return (0); 961 } 962 if (inf->count >= inf->maxcount) 963 expand_list(inf); 964 inf->l.uids[(inf->count)++] = pwd->pw_uid; 965 return (1); 966 } 967 968 static void 969 add_list(struct listinfo *inf, const char *argp) 970 { 971 const char *savep; 972 char *cp, *endp; 973 int toolong; 974 char elemcopy[PATH_MAX]; 975 976 if (*argp == '\0') 977 inf->addelem(inf, argp); 978 while (*argp != '\0') { 979 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 980 argp++; 981 savep = argp; 982 toolong = 0; 983 cp = elemcopy; 984 if (strchr(T_SEP, *argp) == NULL) { 985 endp = elemcopy + sizeof(elemcopy) - 1; 986 while (*argp != '\0' && cp <= endp && 987 strchr(W_SEP T_SEP, *argp) == NULL) 988 *cp++ = *argp++; 989 if (cp > endp) 990 toolong = 1; 991 } 992 if (!toolong) { 993 *cp = '\0'; 994 /* 995 * Add this single element to the given list. 996 */ 997 inf->addelem(inf, elemcopy); 998 } else { 999 /* 1000 * The string is too long to copy. Find the end 1001 * of the string to print out the warning message. 1002 */ 1003 while (*argp != '\0' && strchr(W_SEP T_SEP, 1004 *argp) == NULL) 1005 argp++; 1006 xo_warnx("Value too long: %.*s", (int)(argp - savep), 1007 savep); 1008 optfatal = 1; 1009 } 1010 /* 1011 * Skip over any number of trailing whitespace characters, 1012 * but only one (at most) trailing element-terminating 1013 * character. 1014 */ 1015 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 1016 argp++; 1017 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) { 1018 argp++; 1019 /* Catch case where string ended with a comma. */ 1020 if (*argp == '\0') 1021 inf->addelem(inf, argp); 1022 } 1023 } 1024 } 1025 1026 static void 1027 descendant_sort(KINFO *ki, int items) 1028 { 1029 int dst, lvl, maxlvl, n, ndst, nsrc, siblings, src; 1030 unsigned char *path; 1031 KINFO kn; 1032 1033 /* 1034 * First, sort the entries by descendancy, tracking the descendancy 1035 * depth in the ki_d.level field. 1036 */ 1037 src = 0; 1038 maxlvl = 0; 1039 while (src < items) { 1040 if (ki[src].ki_d.level) { 1041 src++; 1042 continue; 1043 } 1044 for (nsrc = 1; src + nsrc < items; nsrc++) 1045 if (!ki[src + nsrc].ki_d.level) 1046 break; 1047 1048 for (dst = 0; dst < items; dst++) { 1049 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_pid) 1050 continue; 1051 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_ppid) 1052 break; 1053 } 1054 1055 if (dst == items) { 1056 src += nsrc; 1057 continue; 1058 } 1059 1060 for (ndst = 1; dst + ndst < items; ndst++) 1061 if (ki[dst + ndst].ki_d.level <= ki[dst].ki_d.level) 1062 break; 1063 1064 for (n = src; n < src + nsrc; n++) { 1065 ki[n].ki_d.level += ki[dst].ki_d.level + 1; 1066 if (maxlvl < ki[n].ki_d.level) 1067 maxlvl = ki[n].ki_d.level; 1068 } 1069 1070 while (nsrc) { 1071 if (src < dst) { 1072 kn = ki[src]; 1073 memmove(ki + src, ki + src + 1, 1074 (dst - src + ndst - 1) * sizeof *ki); 1075 ki[dst + ndst - 1] = kn; 1076 nsrc--; 1077 dst--; 1078 ndst++; 1079 } else if (src != dst + ndst) { 1080 kn = ki[src]; 1081 memmove(ki + dst + ndst + 1, ki + dst + ndst, 1082 (src - dst - ndst) * sizeof *ki); 1083 ki[dst + ndst] = kn; 1084 ndst++; 1085 nsrc--; 1086 src++; 1087 } else { 1088 ndst += nsrc; 1089 src += nsrc; 1090 nsrc = 0; 1091 } 1092 } 1093 } 1094 1095 /* 1096 * Now populate ki_d.prefix (instead of ki_d.level) with the command 1097 * prefix used to show descendancies. 1098 */ 1099 path = calloc((maxlvl + 7) / 8, sizeof(unsigned char)); 1100 for (src = 0; src < items; src++) { 1101 if ((lvl = ki[src].ki_d.level) == 0) { 1102 ki[src].ki_d.prefix = NULL; 1103 continue; 1104 } 1105 if ((ki[src].ki_d.prefix = malloc(lvl * 2 + 1)) == NULL) 1106 xo_errx(1, "malloc failed"); 1107 for (n = 0; n < lvl - 2; n++) { 1108 ki[src].ki_d.prefix[n * 2] = 1109 path[n / 8] & 1 << (n % 8) ? '|' : ' '; 1110 ki[src].ki_d.prefix[n * 2 + 1] = ' '; 1111 } 1112 if (n == lvl - 2) { 1113 /* Have I any more siblings? */ 1114 for (siblings = 0, dst = src + 1; dst < items; dst++) { 1115 if (ki[dst].ki_d.level > lvl) 1116 continue; 1117 if (ki[dst].ki_d.level == lvl) 1118 siblings = 1; 1119 break; 1120 } 1121 if (siblings) 1122 path[n / 8] |= 1 << (n % 8); 1123 else 1124 path[n / 8] &= ~(1 << (n % 8)); 1125 ki[src].ki_d.prefix[n * 2] = siblings ? '|' : '`'; 1126 ki[src].ki_d.prefix[n * 2 + 1] = '-'; 1127 n++; 1128 } 1129 strcpy(ki[src].ki_d.prefix + n * 2, "- "); 1130 } 1131 free(path); 1132 } 1133 1134 static void * 1135 expand_list(struct listinfo *inf) 1136 { 1137 void *newlist; 1138 int newmax; 1139 1140 newmax = (inf->maxcount + 1) << 1; 1141 newlist = realloc(inf->l.ptr, newmax * inf->elemsize); 1142 if (newlist == NULL) { 1143 free(inf->l.ptr); 1144 xo_errx(1, "realloc to %d %ss failed", newmax, inf->lname); 1145 } 1146 inf->maxcount = newmax; 1147 inf->l.ptr = newlist; 1148 1149 return (newlist); 1150 } 1151 1152 static void 1153 free_list(struct listinfo *inf) 1154 { 1155 1156 inf->count = inf->elemsize = inf->maxcount = 0; 1157 if (inf->l.ptr != NULL) 1158 free(inf->l.ptr); 1159 inf->addelem = NULL; 1160 inf->lname = NULL; 1161 inf->l.ptr = NULL; 1162 } 1163 1164 static void 1165 init_list(struct listinfo *inf, addelem_rtn artn, int elemsize, 1166 const char *lname) 1167 { 1168 1169 inf->count = inf->maxcount = 0; 1170 inf->elemsize = elemsize; 1171 inf->addelem = artn; 1172 inf->lname = lname; 1173 inf->l.ptr = NULL; 1174 } 1175 1176 VARENT * 1177 find_varentry(VAR *v) 1178 { 1179 struct varent *vent; 1180 1181 STAILQ_FOREACH(vent, &varlist, next_ve) { 1182 if (strcmp(vent->var->name, v->name) == 0) 1183 return vent; 1184 } 1185 return NULL; 1186 } 1187 1188 static void 1189 scanvars(void) 1190 { 1191 struct varent *vent; 1192 VAR *v; 1193 1194 STAILQ_FOREACH(vent, &varlist, next_ve) { 1195 v = vent->var; 1196 if (v->flag & USER) 1197 needuser = 1; 1198 if (v->flag & COMM) 1199 needcomm = 1; 1200 } 1201 } 1202 1203 static void 1204 format_output(KINFO *ki) 1205 { 1206 struct varent *vent; 1207 VAR *v; 1208 KINFO_STR *ks; 1209 char *str; 1210 int len; 1211 1212 STAILQ_INIT(&ki->ki_ks); 1213 STAILQ_FOREACH(vent, &varlist, next_ve) { 1214 v = vent->var; 1215 str = (v->oproc)(ki, vent); 1216 ks = malloc(sizeof(*ks)); 1217 if (ks == NULL) 1218 xo_errx(1, "malloc failed"); 1219 ks->ks_str = str; 1220 STAILQ_INSERT_TAIL(&ki->ki_ks, ks, ks_next); 1221 if (str != NULL) { 1222 len = strlen(str); 1223 } else 1224 len = 1; /* "-" */ 1225 if (v->width < len) 1226 v->width = len; 1227 } 1228 } 1229 1230 static void 1231 sizevars(void) 1232 { 1233 struct varent *vent; 1234 VAR *v; 1235 int i; 1236 1237 STAILQ_FOREACH(vent, &varlist, next_ve) { 1238 v = vent->var; 1239 i = strlen(vent->header); 1240 if (v->width < i) 1241 v->width = i; 1242 } 1243 } 1244 1245 static const char * 1246 fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki, 1247 char *comm, char *thread, int maxlen) 1248 { 1249 const char *s; 1250 1251 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, 1252 showthreads && ki->ki_p->ki_numthreads > 1 ? thread : NULL, maxlen); 1253 return (s); 1254 } 1255 1256 #define UREADOK(ki) (forceuread || (ki->ki_p->ki_flag & P_INMEM)) 1257 1258 static void 1259 saveuser(KINFO *ki) 1260 { 1261 char tdname[COMMLEN + 1]; 1262 char *argsp; 1263 1264 if (ki->ki_p->ki_flag & P_INMEM) { 1265 /* 1266 * The u-area might be swapped out, and we can't get 1267 * at it because we have a crashdump and no swap. 1268 * If it's here fill in these fields, otherwise, just 1269 * leave them 0. 1270 */ 1271 ki->ki_valid = 1; 1272 } else 1273 ki->ki_valid = 0; 1274 /* 1275 * save arguments if needed 1276 */ 1277 if (needcomm) { 1278 if (ki->ki_p->ki_stat == SZOMB) { 1279 ki->ki_args = strdup("<defunct>"); 1280 } else if (UREADOK(ki) || (ki->ki_p->ki_args != NULL)) { 1281 (void)snprintf(tdname, sizeof(tdname), "%s%s", 1282 ki->ki_p->ki_tdname, ki->ki_p->ki_moretdname); 1283 ki->ki_args = fmt(kvm_getargv, ki, 1284 ki->ki_p->ki_comm, tdname, COMMLEN * 2 + 1); 1285 } else { 1286 asprintf(&argsp, "(%s)", ki->ki_p->ki_comm); 1287 ki->ki_args = argsp; 1288 } 1289 if (ki->ki_args == NULL) 1290 xo_errx(1, "malloc failed"); 1291 } else { 1292 ki->ki_args = NULL; 1293 } 1294 if (needenv) { 1295 if (UREADOK(ki)) 1296 ki->ki_env = fmt(kvm_getenvv, ki, 1297 (char *)NULL, (char *)NULL, 0); 1298 else 1299 ki->ki_env = strdup("()"); 1300 if (ki->ki_env == NULL) 1301 xo_errx(1, "malloc failed"); 1302 } else { 1303 ki->ki_env = NULL; 1304 } 1305 } 1306 1307 /* A macro used to improve the readability of pscomp(). */ 1308 #define DIFF_RETURN(a, b, field) do { \ 1309 if ((a)->field != (b)->field) \ 1310 return (((a)->field < (b)->field) ? -1 : 1); \ 1311 } while (0) 1312 1313 static int 1314 pscomp(const void *a, const void *b) 1315 { 1316 const KINFO *ka, *kb; 1317 1318 ka = a; 1319 kb = b; 1320 /* SORTCPU and SORTMEM are sorted in descending order. */ 1321 if (sortby == SORTCPU) 1322 DIFF_RETURN(kb, ka, ki_pcpu); 1323 if (sortby == SORTMEM) 1324 DIFF_RETURN(kb, ka, ki_memsize); 1325 /* 1326 * TTY's are sorted in ascending order, except that all NODEV 1327 * processes come before all processes with a device. 1328 */ 1329 if (ka->ki_p->ki_tdev != kb->ki_p->ki_tdev) { 1330 if (ka->ki_p->ki_tdev == NODEV) 1331 return (-1); 1332 if (kb->ki_p->ki_tdev == NODEV) 1333 return (1); 1334 DIFF_RETURN(ka, kb, ki_p->ki_tdev); 1335 } 1336 1337 /* PID's and TID's (threads) are sorted in ascending order. */ 1338 DIFF_RETURN(ka, kb, ki_p->ki_pid); 1339 DIFF_RETURN(ka, kb, ki_p->ki_tid); 1340 return (0); 1341 } 1342 #undef DIFF_RETURN 1343 1344 /* 1345 * ICK (all for getopt), would rather hide the ugliness 1346 * here than taint the main code. 1347 * 1348 * ps foo -> ps -foo 1349 * ps 34 -> ps -p34 1350 * 1351 * The old convention that 't' with no trailing tty arg means the users 1352 * tty, is only supported if argv[1] doesn't begin with a '-'. This same 1353 * feature is available with the option 'T', which takes no argument. 1354 */ 1355 static char * 1356 kludge_oldps_options(const char *optlist, char *origval, const char *nextarg) 1357 { 1358 size_t len; 1359 char *argp, *cp, *newopts, *ns, *optp, *pidp; 1360 1361 /* 1362 * See if the original value includes any option which takes an 1363 * argument (and will thus use up the remainder of the string). 1364 */ 1365 argp = NULL; 1366 if (optlist != NULL) { 1367 for (cp = origval; *cp != '\0'; cp++) { 1368 optp = strchr(optlist, *cp); 1369 if ((optp != NULL) && *(optp + 1) == ':') { 1370 argp = cp; 1371 break; 1372 } 1373 } 1374 } 1375 if (argp != NULL && *origval == '-') 1376 return (origval); 1377 1378 /* 1379 * if last letter is a 't' flag with no argument (in the context 1380 * of the oldps options -- option string NOT starting with a '-' -- 1381 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 1382 * 1383 * However, if a flag accepting a string argument is found earlier 1384 * in the option string (including a possible `t' flag), then the 1385 * remainder of the string must be the argument to that flag; so 1386 * do not modify that argument. Note that a trailing `t' would 1387 * cause argp to be set, if argp was not already set by some 1388 * earlier option. 1389 */ 1390 len = strlen(origval); 1391 cp = origval + len - 1; 1392 pidp = NULL; 1393 if (*cp == 't' && *origval != '-' && cp == argp) { 1394 if (nextarg == NULL || *nextarg == '-' || isdigitch(*nextarg)) 1395 *cp = 'T'; 1396 } else if (argp == NULL) { 1397 /* 1398 * The original value did not include any option which takes 1399 * an argument (and that would include `p' and `t'), so check 1400 * the value for trailing number, or comma-separated list of 1401 * numbers, which we will treat as a pid request. 1402 */ 1403 if (isdigitch(*cp)) { 1404 while (cp >= origval && (*cp == ',' || isdigitch(*cp))) 1405 --cp; 1406 pidp = cp + 1; 1407 } 1408 } 1409 1410 /* 1411 * If nothing needs to be added to the string, then return 1412 * the "original" (although possibly modified) value. 1413 */ 1414 if (*origval == '-' && pidp == NULL) 1415 return (origval); 1416 1417 /* 1418 * Create a copy of the string to add '-' and/or 'p' to the 1419 * original value. 1420 */ 1421 if ((newopts = ns = malloc(len + 3)) == NULL) 1422 xo_errx(1, "malloc failed"); 1423 1424 if (*origval != '-') 1425 *ns++ = '-'; /* add option flag */ 1426 1427 if (pidp == NULL) 1428 strcpy(ns, origval); 1429 else { 1430 /* 1431 * Copy everything before the pid string, add the `p', 1432 * and then copy the pid string. 1433 */ 1434 len = pidp - origval; 1435 memcpy(ns, origval, len); 1436 ns += len; 1437 *ns++ = 'p'; 1438 strcpy(ns, pidp); 1439 } 1440 1441 return (newopts); 1442 } 1443 1444 static void 1445 pidmax_init(void) 1446 { 1447 size_t intsize; 1448 1449 intsize = sizeof(pid_max); 1450 if (sysctlbyname("kern.pid_max", &pid_max, &intsize, NULL, 0) < 0) { 1451 xo_warn("unable to read kern.pid_max"); 1452 pid_max = 99999; 1453 } 1454 } 1455 1456 static void __dead2 1457 usage(void) 1458 { 1459 #define SINGLE_OPTS "[-aCcde" OPT_LAZY_f "HhjlmrSTuvwXxZ]" 1460 1461 (void)xo_error("%s\n%s\n%s\n%s\n", 1462 "usage: ps [--libxo] " SINGLE_OPTS " [-O fmt | -o fmt]", 1463 " [-G gid[,gid...]] [-J jid[,jid...]] [-M core] [-N system]", 1464 " [-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]", 1465 " ps [--libxo] -L"); 1466 exit(1); 1467 } 1468