ps.c revision 127536
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 * 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. 20 * 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 31 * SUCH DAMAGE. 32 * ------+---------+---------+-------- + --------+---------+---------+---------* 33 * Copyright (c) 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>. 34 * All rights reserved. 35 * 36 * Significant modifications made to bring `ps' options somewhat closer 37 * to the standard for `ps' as described in SingleUnixSpec-v3. 38 * ------+---------+---------+-------- + --------+---------+---------+---------* 39 */ 40 41#ifndef lint 42static const char copyright[] = 43"@(#) Copyright (c) 1990, 1993, 1994\n\ 44 The Regents of the University of California. All rights reserved.\n"; 45#endif /* not lint */ 46 47#if 0 48#ifndef lint 49static char sccsid[] = "@(#)ps.c 8.4 (Berkeley) 4/2/94"; 50#endif /* not lint */ 51#endif 52 53#include <sys/cdefs.h> 54__FBSDID("$FreeBSD: head/bin/ps/ps.c 127536 2004-03-28 23:44:29Z gad $"); 55 56#include <sys/param.h> 57#include <sys/user.h> 58#include <sys/stat.h> 59#include <sys/ioctl.h> 60#include <sys/sysctl.h> 61 62#include <ctype.h> 63#include <err.h> 64#include <errno.h> 65#include <fcntl.h> 66#include <grp.h> 67#include <kvm.h> 68#include <limits.h> 69#include <locale.h> 70#include <paths.h> 71#include <pwd.h> 72#include <stdint.h> 73#include <stdio.h> 74#include <stdlib.h> 75#include <string.h> 76#include <unistd.h> 77 78#include "ps.h" 79 80#define W_SEP " \t" /* "Whitespace" list separators */ 81#define T_SEP "," /* "Terminate-element" list separators */ 82 83static KINFO *kinfo; 84struct varent *vhead; 85 86int eval; /* exit value */ 87int cflag; /* -c */ 88int optfatal; /* Fatal error parsing some list-option */ 89int rawcpu; /* -C */ 90int sumrusage; /* -S */ 91int termwidth; /* width of screen (0 == infinity) */ 92int totwidth; /* calculated width of requested variables */ 93 94time_t now; /* current time(3) value */ 95 96struct listinfo; 97typedef int addelem_rtn(struct listinfo *_inf, const char *elem); 98 99struct listinfo { 100 int count; 101 int maxcount; 102 int elemsize; 103 addelem_rtn *addelem; 104 const char *lname; 105 union { 106 gid_t *gids; 107 pid_t *pids; 108 dev_t *ttys; 109 uid_t *uids; 110 void *ptr; 111 }; 112}; 113 114static int needuser, needcomm, needenv; 115 116#ifdef LAZY_PS 117static int forceuread = 0; 118#define OPT_LAZY_f "f" 119#else 120static int forceuread = 1; 121#define OPT_LAZY_f /* Ie, the `-f' option is not added. */ 122#endif 123 124static enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 125 126static int addelem_gid(struct listinfo *, const char *); 127static int addelem_pid(struct listinfo *, const char *); 128static int addelem_tty(struct listinfo *, const char *); 129static int addelem_uid(struct listinfo *, const char *); 130static void add_list(struct listinfo *, const char *); 131static void dynsizevars(KINFO *); 132static void *expand_list(struct listinfo *); 133static const char *fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int), 134 KINFO *, char *, int); 135static void free_list(struct listinfo *); 136static void init_list(struct listinfo *, addelem_rtn, int, const char *); 137static char *kludge_oldps_options(char *); 138static int pscomp(const void *, const void *); 139static void saveuser(KINFO *); 140static void scanvars(void); 141static void sizevars(void); 142static void usage(void); 143 144static char dfmt[] = "pid,tt,state,time,command"; 145static char jfmt[] = "user,pid,ppid,pgid,jobc,state,tt,time,command"; 146static char lfmt[] = "uid,pid,ppid,cpu,pri,nice,vsz,rss,mwchan,state,tt,time,command"; 147static char o1[] = "pid"; 148static char o2[] = "tt,state,time,command"; 149static char ufmt[] = "user,pid,%cpu,%mem,vsz,rss,tt,state,start,time,command"; 150static char vfmt[] = "pid,state,time,sl,re,pagein,vsz,rss,lim,tsiz,%cpu,%mem,command"; 151static char Zfmt[] = "label"; 152 153static kvm_t *kd; 154 155#define PS_ARGS "AaCc" OPT_LAZY_f "G:gHhjLlM:mN:O:o:p:rSTt:U:uvwXxZ" 156 157int 158main(int argc, char *argv[]) 159{ 160 struct listinfo gidlist, pgrplist, pidlist; 161 struct listinfo ruidlist, sesslist, ttylist, uidlist; 162 struct kinfo_proc *kp; 163 struct varent *vent; 164 struct winsize ws; 165 int all, ch, dropgid, elem, flag, _fmt, i, lineno; 166 int nentries, nocludge, nkept, nselectors; 167 int prtheader, showthreads, wflag, what, xkeep, xkeep_implied; 168 char *cols; 169 char errbuf[_POSIX2_LINE_MAX]; 170 const char *cp, *nlistf, *memf; 171 172 (void) setlocale(LC_ALL, ""); 173 /* Set the time to what it is right now. */ 174 time(&now); 175 176 if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0') 177 termwidth = atoi(cols); 178 else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 179 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 180 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) || 181 ws.ws_col == 0) 182 termwidth = 79; 183 else 184 termwidth = ws.ws_col - 1; 185 186 /* 187 * Don't apply a kludge if the first argument is an option taking an 188 * argument 189 */ 190 if (argc > 1) { 191 nocludge = 0; 192 if (argv[1][0] == '-') { 193 for (cp = PS_ARGS; *cp != '\0'; cp++) { 194 if (*cp != ':') 195 continue; 196 if (*(cp - 1) == argv[1][1]) { 197 nocludge = 1; 198 break; 199 } 200 } 201 } 202 if (nocludge == 0) 203 argv[1] = kludge_oldps_options(argv[1]); 204 } 205 206 xkeep = -1; /* Neither -x nor -X */ 207 all = _fmt = nselectors = prtheader = wflag = xkeep_implied = 0; 208 init_list(&gidlist, addelem_gid, sizeof(gid_t), "group"); 209 init_list(&pgrplist, addelem_pid, sizeof(pid_t), "process group"); 210 init_list(&pidlist, addelem_pid, sizeof(pid_t), "process id"); 211 init_list(&ruidlist, addelem_uid, sizeof(uid_t), "ruser"); 212 init_list(&sesslist, addelem_pid, sizeof(pid_t), "session id"); 213 init_list(&ttylist, addelem_tty, sizeof(dev_t), "tty"); 214 init_list(&uidlist, addelem_uid, sizeof(uid_t), "user"); 215 dropgid = 0; 216 optfatal = 0; 217 memf = nlistf = _PATH_DEVNULL; 218 showthreads = 0; 219 while ((ch = getopt(argc, argv, PS_ARGS)) != -1) 220 switch((char)ch) { 221 case 'A': 222 /* 223 * Exactly the same as `-ax'. This has been 224 * added for compatability with SUSv3, but for 225 * now it will not be described in the man page. 226 */ 227 nselectors++; 228 all = xkeep = 1; 229 break; 230 case 'a': 231 nselectors++; 232 all = 1; 233 break; 234 case 'C': 235 rawcpu = 1; 236 break; 237 case 'c': 238 cflag = 1; 239 break; 240 case 'e': /* XXX set ufmt */ 241 needenv = 1; 242 break; 243#ifdef LAZY_PS 244 case 'f': 245 if (getuid() == 0 || getgid() == 0) 246 forceuread = 1; 247 break; 248#endif 249 case 'G': 250 add_list(&gidlist, optarg); 251 xkeep_implied = 1; 252 nselectors++; 253 break; 254#if 0 255 /* XXX - This SUSv3 option is still under debate. */ 256 /* (it conflicts with the undocumented `-g' option) */ 257 case 'g': 258 add_list(&pgrplist, optarg); 259 xkeep_implied = 1; 260 nselectors++; 261 break; 262#else 263 case 'g': 264 /* Historical BSD-ish (from SunOS) option */ 265 break; /* no-op */ 266#endif 267 case 'H': 268 showthreads = KERN_PROC_INC_THREAD; 269 break; 270 case 'h': 271 prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 272 break; 273 case 'j': 274 parsefmt(jfmt, 0); 275 _fmt = 1; 276 jfmt[0] = '\0'; 277 break; 278 case 'L': 279 showkey(); 280 exit(0); 281 case 'l': 282 parsefmt(lfmt, 0); 283 _fmt = 1; 284 lfmt[0] = '\0'; 285 break; 286 case 'M': 287 memf = optarg; 288 dropgid = 1; 289 break; 290 case 'm': 291 sortby = SORTMEM; 292 break; 293 case 'N': 294 nlistf = optarg; 295 dropgid = 1; 296 break; 297 case 'O': 298 parsefmt(o1, 1); 299 parsefmt(optarg, 1); 300 parsefmt(o2, 1); 301 o1[0] = o2[0] = '\0'; 302 _fmt = 1; 303 break; 304 case 'o': 305 parsefmt(optarg, 1); 306 _fmt = 1; 307 break; 308 case 'p': 309 add_list(&pidlist, optarg); 310 /* 311 * Note: `-p' does not *set* xkeep, but any values 312 * from pidlist are checked before xkeep is. That 313 * way they are always matched, even if the user 314 * specifies `-X'. 315 */ 316 nselectors++; 317 break; 318#if 0 319 /* XXX - This un-standard option is still under debate. */ 320 case 'R': 321 /* This is what SUSv3 defines as the `-U' option. */ 322 add_list(&ruidlist, optarg); 323 xkeep_implied = 1; 324 nselectors++; 325 break; 326#endif 327 case 'r': 328 sortby = SORTCPU; 329 break; 330 case 'S': 331 sumrusage = 1; 332 break; 333#if 0 334 /* XXX - This non-standard option is still under debate. */ 335 /* (it conflicts with `-s' in NetBSD) */ 336 case 's': 337 /* As seen on Solaris, Linux, IRIX. */ 338 add_list(&sesslist, optarg); 339 xkeep_implied = 1; 340 nselectors++; 341 break; 342#endif 343 case 'T': 344 if ((optarg = ttyname(STDIN_FILENO)) == NULL) 345 errx(1, "stdin: not a terminal"); 346 /* FALLTHROUGH */ 347 case 't': 348 add_list(&ttylist, optarg); 349 xkeep_implied = 1; 350 nselectors++; 351 break; 352 case 'U': 353 /* This is what SUSv3 defines as the `-u' option. */ 354 add_list(&uidlist, optarg); 355 xkeep_implied = 1; 356 nselectors++; 357 break; 358 case 'u': 359 parsefmt(ufmt, 0); 360 sortby = SORTCPU; 361 _fmt = 1; 362 ufmt[0] = '\0'; 363 break; 364 case 'v': 365 parsefmt(vfmt, 0); 366 sortby = SORTMEM; 367 _fmt = 1; 368 vfmt[0] = '\0'; 369 break; 370 case 'w': 371 if (wflag) 372 termwidth = UNLIMITED; 373 else if (termwidth < 131) 374 termwidth = 131; 375 wflag++; 376 break; 377 case 'X': 378 /* 379 * Note that `-X' and `-x' are not standard "selector" 380 * options. For most selector-options, we check *all* 381 * processes to see if any are matched by the given 382 * value(s). After we have a set of all the matched 383 * processes, then `-X' and `-x' govern whether we 384 * modify that *matched* set for processes which do 385 * not have a controlling terminal. `-X' causes 386 * those processes to be deleted from the matched 387 * set, while `-x' causes them to be kept. 388 */ 389 xkeep = 0; 390 break; 391 case 'x': 392 xkeep = 1; 393 break; 394 case 'Z': 395 parsefmt(Zfmt, 0); 396 Zfmt[0] = '\0'; 397 break; 398 case '?': 399 default: 400 usage(); 401 } 402 argc -= optind; 403 argv += optind; 404 405 if (optfatal) 406 exit(1); /* Error messages already printed */ 407 408 if (xkeep < 0) /* Neither -X nor -x was specified */ 409 xkeep = xkeep_implied; 410 411#define BACKWARD_COMPATIBILITY 412#ifdef BACKWARD_COMPATIBILITY 413 if (*argv) { 414 nlistf = *argv; 415 if (*++argv) { 416 memf = *argv; 417 } 418 } 419#endif 420 /* 421 * Discard setgid privileges if not the running kernel so that bad 422 * guys can't print interesting stuff from kernel memory. 423 */ 424 if (dropgid) { 425 setgid(getgid()); 426 setuid(getuid()); 427 } 428 429 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 430 if (kd == 0) 431 errx(1, "%s", errbuf); 432 433 if (!_fmt) 434 parsefmt(dfmt, 0); 435 436 if (nselectors == 0) { 437 uidlist.ptr = malloc(sizeof(uid_t)); 438 if (uidlist.ptr == NULL) 439 errx(1, "malloc failed"); 440 nselectors = 1; 441 uidlist.count = uidlist.maxcount = 1; 442 *uidlist.uids = getuid(); 443 } 444 445 /* 446 * scan requested variables, noting what structures are needed, 447 * and adjusting header widths as appropriate. 448 */ 449 scanvars(); 450 451 /* 452 * Get process list. If the user requested just one selector- 453 * option, then kvm_getprocs can be asked to return just those 454 * processes. Otherwise, have it return all processes, and 455 * then this routine will search that full list and select the 456 * processes which match any of the user's selector-options. 457 */ 458 what = showthreads != 0 ? KERN_PROC_ALL : KERN_PROC_PROC; 459 flag = 0; 460 if (nselectors == 1) { 461 /* XXX - Apparently there's no KERN_PROC_GID flag. */ 462 if (pgrplist.count == 1) { 463 what = KERN_PROC_PGRP | showthreads; 464 flag = *pgrplist.pids; 465 nselectors = 0; 466 } else if (pidlist.count == 1) { 467 what = KERN_PROC_PID | showthreads; 468 flag = *pidlist.pids; 469 nselectors = 0; 470 } else if (ruidlist.count == 1) { 471 what = KERN_PROC_RUID | showthreads; 472 flag = *ruidlist.uids; 473 nselectors = 0; 474#if 0 /* XXX - KERN_PROC_SESSION causes error in kvm_getprocs? */ 475 } else if (sesslist.count == 1) { 476 what = KERN_PROC_SESSION | showthreads; 477 flag = *sesslist.pids; 478 nselectors = 0; 479#endif 480 } else if (ttylist.count == 1) { 481 what = KERN_PROC_TTY | showthreads; 482 flag = *ttylist.ttys; 483 nselectors = 0; 484 } else if (uidlist.count == 1) { 485 what = KERN_PROC_UID | showthreads; 486 flag = *uidlist.uids; 487 nselectors = 0; 488 } else if (all) { 489 /* No need for this routine to select processes. */ 490 nselectors = 0; 491 } 492 } 493 494 /* 495 * select procs 496 */ 497 nentries = -1; 498 kp = kvm_getprocs(kd, what, flag, &nentries); 499 if ((kp == 0 && nentries > 0) || (kp != 0 && nentries < 0)) 500 errx(1, "%s", kvm_geterr(kd)); 501 nkept = 0; 502 if (nentries > 0) { 503 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL) 504 errx(1, "malloc failed"); 505 for (i = nentries; --i >= 0; ++kp) { 506 /* 507 * If the user specified multiple selection-criteria, 508 * then keep any process matched by the inclusive OR 509 * of all the selection-criteria given. 510 */ 511 if (pidlist.count > 0) { 512 for (elem = 0; elem < pidlist.count; elem++) 513 if (kp->ki_pid == pidlist.pids[elem]) 514 goto keepit; 515 } 516 /* 517 * Note that we had to process pidlist before 518 * filtering out processes which do not have 519 * a controlling terminal. 520 */ 521 if (xkeep == 0) { 522 if ((kp->ki_tdev == NODEV || 523 (kp->ki_flag & P_CONTROLT) == 0)) 524 continue; 525 } 526 if (nselectors == 0) 527 goto keepit; 528 if (gidlist.count > 0) { 529 for (elem = 0; elem < gidlist.count; elem++) 530 if (kp->ki_rgid == gidlist.gids[elem]) 531 goto keepit; 532 } 533 if (pgrplist.count > 0) { 534 for (elem = 0; elem < pgrplist.count; elem++) 535 if (kp->ki_pgid == pgrplist.pids[elem]) 536 goto keepit; 537 } 538 if (ruidlist.count > 0) { 539 for (elem = 0; elem < ruidlist.count; elem++) 540 if (kp->ki_ruid == ruidlist.uids[elem]) 541 goto keepit; 542 } 543 if (sesslist.count > 0) { 544 for (elem = 0; elem < sesslist.count; elem++) 545 if (kp->ki_sid == sesslist.pids[elem]) 546 goto keepit; 547 } 548 if (ttylist.count > 0) { 549 for (elem = 0; elem < ttylist.count; elem++) 550 if (kp->ki_tdev == ttylist.ttys[elem]) 551 goto keepit; 552 } 553 if (uidlist.count > 0) { 554 for (elem = 0; elem < uidlist.count; elem++) 555 if (kp->ki_uid == uidlist.uids[elem]) 556 goto keepit; 557 } 558 /* 559 * This process did not match any of the user's 560 * selector-options, so skip the process. 561 */ 562 continue; 563 564 keepit: 565 kinfo[nkept].ki_p = kp; 566 if (needuser) 567 saveuser(&kinfo[nkept]); 568 dynsizevars(&kinfo[nkept]); 569 nkept++; 570 } 571 } 572 573 sizevars(); 574 575 /* 576 * print header 577 */ 578 printheader(); 579 if (nkept == 0) 580 exit(1); 581 582 /* 583 * sort proc list 584 */ 585 qsort(kinfo, nkept, sizeof(KINFO), pscomp); 586 /* 587 * For each process, call each variable output function. 588 */ 589 for (i = lineno = 0; i < nkept; i++) { 590 for (vent = vhead; vent; vent = vent->next) { 591 (vent->var->oproc)(&kinfo[i], vent); 592 if (vent->next != NULL) 593 (void)putchar(' '); 594 } 595 (void)putchar('\n'); 596 if (prtheader && lineno++ == prtheader - 4) { 597 (void)putchar('\n'); 598 printheader(); 599 lineno = 0; 600 } 601 } 602 free_list(&gidlist); 603 free_list(&pidlist); 604 free_list(&pgrplist); 605 free_list(&ruidlist); 606 free_list(&sesslist); 607 free_list(&ttylist); 608 free_list(&uidlist); 609 610 exit(eval); 611} 612 613static int 614addelem_gid(struct listinfo *inf, const char *elem) 615{ 616 struct group *grp; 617 intmax_t ltemp; 618 const char *nameorID; 619 char *endp; 620 621 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 622 if (*elem == '\0') 623 warnx("Invalid (zero-length) %s name", inf->lname); 624 else 625 warnx("%s name too long: %s", inf->lname, elem); 626 optfatal = 1; 627 return (0); /* Do not add this value */ 628 } 629 630 /* 631 * SUSv3 states that `ps -G grouplist' should match "real-group 632 * ID numbers", and does not mention group-names. I do want to 633 * also support group-names, so this tries for a group-id first, 634 * and only tries for a name if that doesn't work. This is the 635 * opposite order of what is done in addelem_uid(), but in 636 * practice the order would only matter for group-names which 637 * are all-numeric. 638 */ 639 grp = NULL; 640 nameorID = "named"; 641 errno = 0; 642 ltemp = strtol(elem, &endp, 10); 643 if (errno == 0 && *endp == '\0' && ltemp >= 0 && ltemp <= GID_MAX) { 644 nameorID = "name or ID matches"; 645 grp = getgrgid((gid_t)ltemp); 646 } 647 if (grp == NULL) 648 grp = getgrnam(elem); 649 if (grp == NULL) { 650 warnx("No %s %s '%s'", inf->lname, nameorID, elem); 651 optfatal = 1; 652 return (0); /* Do not add this value */ 653 } 654 655 if (inf->count >= inf->maxcount) 656 expand_list(inf); 657 inf->gids[(inf->count)++] = grp->gr_gid; 658 return (1); 659} 660 661#define BSD_PID_MAX 99999 /* Copy of PID_MAX from sys/proc.h */ 662static int 663addelem_pid(struct listinfo *inf, const char *elem) 664{ 665 long tempid; 666 char *endp; 667 668 if (*elem == '\0') 669 tempid = 0L; 670 else { 671 errno = 0; 672 tempid = strtol(elem, &endp, 10); 673 if (*endp != '\0' || tempid < 0 || elem == endp) { 674 warnx("Invalid %s: %s", inf->lname, elem); 675 errno = ERANGE; 676 } else if (errno != 0 || tempid > BSD_PID_MAX) { 677 warnx("%s too large: %s", inf->lname, elem); 678 errno = ERANGE; 679 } 680 if (errno == ERANGE) { 681 optfatal = 1; 682 return (0); /* Do not add this value */ 683 } 684 } 685 686 if (inf->count >= inf->maxcount) 687 expand_list(inf); 688 inf->pids[(inf->count)++] = tempid; 689 return (1); 690} 691#undef BSD_PID_MAX 692 693static int 694addelem_tty(struct listinfo *inf, const char *elem) 695{ 696 char pathbuf[PATH_MAX]; 697 struct stat sb; 698 const char *ttypath; 699 700 if (strcmp(elem, "co") == 0) 701 ttypath = strdup(_PATH_CONSOLE); 702 else if (*elem == '/') 703 ttypath = elem; 704 else { 705 strlcpy(pathbuf, _PATH_TTY, sizeof(pathbuf)); 706 strlcat(pathbuf, elem, sizeof(pathbuf)); 707 ttypath = pathbuf; 708 } 709 710 if (stat(ttypath, &sb) == -1) { 711 warn("%s", ttypath); 712 optfatal = 1; 713 return (0); /* Do not add this value */ 714 } 715 if (!S_ISCHR(sb.st_mode)) { 716 warn("%s: Not a terminal", ttypath); 717 optfatal = 1; 718 return (0); /* Do not add this value */ 719 } 720 721 if (inf->count >= inf->maxcount) 722 expand_list(inf); 723 inf->ttys[(inf->count)++] = sb.st_rdev; 724 return (1); 725} 726 727static int 728addelem_uid(struct listinfo *inf, const char *elem) 729{ 730 struct passwd *pwd; 731 intmax_t ltemp; 732 char *endp; 733 734 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 735 if (*elem == '\0') 736 warnx("Invalid (zero-length) %s name", inf->lname); 737 else 738 warnx("%s name too long: %s", inf->lname, elem); 739 optfatal = 1; 740 return (0); /* Do not add this value */ 741 } 742 743 pwd = getpwnam(elem); 744 if (pwd == NULL) { 745 errno = 0; 746 ltemp = strtol(elem, &endp, 10); 747 if (errno != 0 || *endp != '\0' || ltemp < 0 || 748 ltemp > UID_MAX) 749 warnx("No %s named '%s'", inf->lname, elem); 750 else { 751 /* The string is all digits, so it might be a userID. */ 752 pwd = getpwuid((uid_t)ltemp); 753 if (pwd == NULL) 754 warnx("No %s name or ID matches '%s'", 755 inf->lname, elem); 756 } 757 } 758 if (pwd == NULL) { 759 /* 760 * These used to be treated as minor warnings (and the 761 * option was simply ignored), but now they are fatal 762 * errors (and the command will be aborted). 763 */ 764 optfatal = 1; 765 return (0); /* Do not add this value */ 766 } 767 768 if (inf->count >= inf->maxcount) 769 expand_list(inf); 770 inf->uids[(inf->count)++] = pwd->pw_uid; 771 return (1); 772} 773 774static void 775add_list(struct listinfo *inf, const char *argp) 776{ 777 char elemcopy[PATH_MAX]; 778 const char *savep; 779 char *cp, *endp; 780 int toolong; 781 782 while (*argp != '\0') { 783 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 784 argp++; 785 savep = argp; 786 toolong = 0; 787 cp = elemcopy; 788 if (strchr(T_SEP, *argp) == NULL) { 789 endp = elemcopy + sizeof(elemcopy) - 1; 790 while (*argp != '\0' && cp <= endp && 791 strchr(W_SEP T_SEP, *argp) == NULL) 792 *cp++ = *argp++; 793 if (cp > endp) 794 toolong = 1; 795 } 796 if (!toolong) { 797 *cp = '\0'; 798#ifndef ADD_PS_LISTRESET 799 /* This is how the standard expects lists to be handled. */ 800 inf->addelem(inf, elemcopy); 801#else 802 /* 803 * This would add a simple non-standard-but-convienent feature. 804 * 805 * XXX - Adding this check increased the total size of `ps' by 806 * 3940 bytes on i386! That's 12% of the entire program! 807 * The `ps.o' file grew by only about 40 bytes, but the 808 * final (stripped) executable in /bin/ps grew by 12%. 809 */ 810 /* 811 * We now have a single element. Add it to the 812 * list, unless the element is ":". In that case, 813 * reset the list so previous entries are ignored. 814 */ 815 if (strcmp(elemcopy, ":") == 0) 816 inf->count = 0; 817 else 818 inf->addelem(inf, elemcopy); 819#endif 820 } else { 821 /* 822 * The string is too long to copy. Find the end 823 * of the string to print out the warning message. 824 */ 825 while (*argp != '\0' && strchr(W_SEP T_SEP, 826 *argp) == NULL) 827 argp++; 828 warnx("Value too long: %.*s", (int)(argp - savep), 829 savep); 830 optfatal = 1; 831 } 832 /* 833 * Skip over any number of trailing whitespace characters, 834 * but only one (at most) trailing element-terminating 835 * character. 836 */ 837 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 838 argp++; 839 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) { 840 argp++; 841 /* Catch case where string ended with a comma. */ 842 if (*argp == '\0') 843 inf->addelem(inf, argp); 844 } 845 } 846} 847 848static void * 849expand_list(struct listinfo *inf) 850{ 851 int newmax; 852 void *newlist; 853 854 newmax = (inf->maxcount + 1) << 1; 855 newlist = realloc(inf->ptr, newmax * inf->elemsize); 856 if (newlist == NULL) { 857 free(inf->ptr); 858 errx(1, "realloc to %d %ss failed", newmax, 859 inf->lname); 860 } 861 inf->maxcount = newmax; 862 inf->ptr = newlist; 863 864 return (newlist); 865} 866 867static void 868free_list(struct listinfo *inf) 869{ 870 871 inf->count = inf->elemsize = inf->maxcount = 0; 872 if (inf->ptr != NULL) 873 free(inf->ptr); 874 inf->addelem = NULL; 875 inf->lname = NULL; 876 inf->ptr = NULL; 877} 878 879static void 880init_list(struct listinfo *inf, addelem_rtn artn, int elemsize, 881 const char *lname) 882{ 883 884 inf->count = inf->maxcount = 0; 885 inf->elemsize = elemsize; 886 inf->addelem = artn; 887 inf->lname = lname; 888 inf->ptr = NULL; 889} 890 891VARENT * 892find_varentry(VAR *v) 893{ 894 struct varent *vent; 895 896 for (vent = vhead; vent; vent = vent->next) { 897 if (strcmp(vent->var->name, v->name) == 0) 898 return vent; 899 } 900 return NULL; 901} 902 903static void 904scanvars(void) 905{ 906 struct varent *vent; 907 VAR *v; 908 909 for (vent = vhead; vent; vent = vent->next) { 910 v = vent->var; 911 if (v->flag & DSIZ) { 912 v->dwidth = v->width; 913 v->width = 0; 914 } 915 if (v->flag & USER) 916 needuser = 1; 917 if (v->flag & COMM) 918 needcomm = 1; 919 } 920} 921 922static void 923dynsizevars(KINFO *ki) 924{ 925 struct varent *vent; 926 VAR *v; 927 int i; 928 929 for (vent = vhead; vent; vent = vent->next) { 930 v = vent->var; 931 if (!(v->flag & DSIZ)) 932 continue; 933 i = (v->sproc)( ki); 934 if (v->width < i) 935 v->width = i; 936 if (v->width > v->dwidth) 937 v->width = v->dwidth; 938 } 939} 940 941static void 942sizevars(void) 943{ 944 struct varent *vent; 945 VAR *v; 946 int i; 947 948 for (vent = vhead; vent; vent = vent->next) { 949 v = vent->var; 950 i = strlen(vent->header); 951 if (v->width < i) 952 v->width = i; 953 totwidth += v->width + 1; /* +1 for space */ 954 } 955 totwidth--; 956} 957 958static const char * 959fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki, 960 char *comm, int maxlen) 961{ 962 const char *s; 963 964 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, maxlen); 965 return (s); 966} 967 968#define UREADOK(ki) (forceuread || (ki->ki_p->ki_sflag & PS_INMEM)) 969 970static void 971saveuser(KINFO *ki) 972{ 973 974 if (ki->ki_p->ki_sflag & PS_INMEM) { 975 /* 976 * The u-area might be swapped out, and we can't get 977 * at it because we have a crashdump and no swap. 978 * If it's here fill in these fields, otherwise, just 979 * leave them 0. 980 */ 981 ki->ki_valid = 1; 982 } else 983 ki->ki_valid = 0; 984 /* 985 * save arguments if needed 986 */ 987 if (needcomm && (UREADOK(ki) || (ki->ki_p->ki_args != NULL))) { 988 ki->ki_args = strdup(fmt(kvm_getargv, ki, ki->ki_p->ki_comm, 989 MAXCOMLEN)); 990 } else if (needcomm) { 991 asprintf(&ki->ki_args, "(%s)", ki->ki_p->ki_comm); 992 } else { 993 ki->ki_args = NULL; 994 } 995 if (needenv && UREADOK(ki)) { 996 ki->ki_env = strdup(fmt(kvm_getenvv, ki, (char *)NULL, 0)); 997 } else if (needenv) { 998 ki->ki_env = malloc(3); 999 strcpy(ki->ki_env, "()"); 1000 } else { 1001 ki->ki_env = NULL; 1002 } 1003} 1004 1005static int 1006pscomp(const void *a, const void *b) 1007{ 1008 int i; 1009#define VSIZE(k) ((k)->ki_p->ki_dsize + (k)->ki_p->ki_ssize + \ 1010 (k)->ki_p->ki_tsize) 1011 1012 if (sortby == SORTCPU) 1013 return (getpcpu((const KINFO *)b) - getpcpu((const KINFO *)a)); 1014 if (sortby == SORTMEM) 1015 return (VSIZE((const KINFO *)b) - VSIZE((const KINFO *)a)); 1016 i = (int)((const KINFO *)a)->ki_p->ki_tdev - 1017 (int)((const KINFO *)b)->ki_p->ki_tdev; 1018 if (i == 0) 1019 i = ((const KINFO *)a)->ki_p->ki_pid - 1020 ((const KINFO *)b)->ki_p->ki_pid; 1021 return (i); 1022} 1023 1024/* 1025 * ICK (all for getopt), would rather hide the ugliness 1026 * here than taint the main code. 1027 * 1028 * ps foo -> ps -foo 1029 * ps 34 -> ps -p34 1030 * 1031 * The old convention that 't' with no trailing tty arg means the users 1032 * tty, is only supported if argv[1] doesn't begin with a '-'. This same 1033 * feature is available with the option 'T', which takes no argument. 1034 */ 1035static char * 1036kludge_oldps_options(char *s) 1037{ 1038 int have_fmt; 1039 size_t len; 1040 char *newopts, *ns, *cp; 1041 1042 /* 1043 * If we have an 'o' option, then note it, since we don't want to do 1044 * some types of munging. 1045 */ 1046 have_fmt = index(s, 'o') != NULL; 1047 1048 len = strlen(s); 1049 if ((newopts = ns = malloc(len + 2)) == NULL) 1050 errx(1, "malloc failed"); 1051 /* 1052 * options begin with '-' 1053 */ 1054 if (*s != '-') 1055 *ns++ = '-'; /* add option flag */ 1056 /* 1057 * gaze to end of argv[1] 1058 */ 1059 cp = s + len - 1; 1060 /* 1061 * if last letter is a 't' flag with no argument (in the context 1062 * of the oldps options -- option string NOT starting with a '-' -- 1063 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 1064 * 1065 * However, if a flag accepting a string argument is found in the 1066 * option string, the remainder of the string is the argument to 1067 * that flag; do not modify that argument. 1068 */ 1069 if (strcspn(s, "MNOoU") == len && *cp == 't' && *s != '-') 1070 *cp = 'T'; 1071 else { 1072 /* 1073 * otherwise check for trailing number, which *may* be a 1074 * pid. 1075 */ 1076 while (cp >= s && isdigit(*cp)) 1077 --cp; 1078 } 1079 cp++; 1080 memmove(ns, s, (size_t)(cp - s)); /* copy up to trailing number */ 1081 ns += cp - s; 1082 /* 1083 * if there's a trailing number, and not a preceding 'p' (pid) or 1084 * 't' (tty) flag, then assume it's a pid and insert a 'p' flag. 1085 */ 1086 if (isdigit(*cp) && 1087 (cp == s || (cp[-1] != 't' && cp[-1] != 'p')) && 1088 (cp - 1 == s || cp[-2] != 't') && !have_fmt) 1089 *ns++ = 'p'; 1090 (void)strcpy(ns, cp); /* and append the number */ 1091 1092 return (newopts); 1093} 1094 1095static void 1096usage(void) 1097{ 1098#define SINGLE_OPTS "[-aC" OPT_LAZY_f "HhjlmrSTuvwXxZ]" 1099 1100 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 1101 "usage: ps " SINGLE_OPTS " [-G gid[,gid]] [-O|o fmt]", 1102 " [-p pid[,pid]] [-t tty[,tty]] [-U user[,user]]", 1103 " [-M core] [-N system]", 1104 " ps [-L]"); 1105 exit(1); 1106} 1107