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/proc.h> 54 #include <sys/user.h> 55 #include <sys/stat.h> 56 #include <sys/ioctl.h> 57 #include <sys/sysctl.h> 58 59 #include <ctype.h> 60 #include <err.h> 61 #include <errno.h> 62 #include <fcntl.h> 63 #include <grp.h> 64 #include <kvm.h> 65 #include <limits.h> 66 #include <locale.h> 67 #include <paths.h> 68 #include <pwd.h> 69 #include <stdio.h> 70 #include <stdlib.h> 71 #include <string.h> 72 #include <unistd.h> 73 74 #include "ps.h" 75 76 #define W_SEP " \t" /* "Whitespace" list separators */ 77 #define T_SEP "," /* "Terminate-element" list separators */ 78 79 #ifdef LAZY_PS 80 #define DEF_UREAD 0 81 #define OPT_LAZY_f "f" 82 #else 83 #define DEF_UREAD 1 /* Always do the more-expensive read. */ 84 #define OPT_LAZY_f /* I.e., the `-f' option is not added. */ 85 #endif 86 87 int cflag; /* -c */ 88 int eval; /* Exit value */ 89 time_t now; /* Current time(3) value */ 90 int rawcpu; /* -C */ 91 int sumrusage; /* -S */ 92 int termwidth; /* Width of the screen (0 == infinity). */ 93 int totwidth; /* Calculated-width of requested variables. */ 94 95 struct varent *vhead; 96 97 static int forceuread = DEF_UREAD; /* Do extra work to get u-area. */ 98 static kvm_t *kd; 99 static KINFO *kinfo; 100 static int needcomm; /* -o "command" */ 101 static int needenv; /* -e */ 102 static int needuser; /* -o "user" */ 103 static int optfatal; /* Fatal error parsing some list-option. */ 104 105 static enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 106 107 struct listinfo; 108 typedef int addelem_rtn(struct listinfo *_inf, const char *_elem); 109 110 struct listinfo { 111 int count; 112 int maxcount; 113 int elemsize; 114 addelem_rtn *addelem; 115 const char *lname; 116 union { 117 gid_t *gids; 118 pid_t *pids; 119 dev_t *ttys; 120 uid_t *uids; 121 void *ptr; 122 } l; 123 }; 124 125 static int addelem_gid(struct listinfo *, const char *); 126 static int addelem_pid(struct listinfo *, const char *); 127 static int addelem_tty(struct listinfo *, const char *); 128 static int addelem_uid(struct listinfo *, const char *); 129 static void add_list(struct listinfo *, const char *); 130 static void dynsizevars(KINFO *); 131 static void *expand_list(struct listinfo *); 132 static const char * 133 fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int), 134 KINFO *, char *, int); 135 static void free_list(struct listinfo *); 136 static void init_list(struct listinfo *, addelem_rtn, int, const char *); 137 static char *kludge_oldps_options(char *); 138 static int pscomp(const void *, const void *); 139 static void saveuser(KINFO *); 140 static void scanvars(void); 141 static void sizevars(void); 142 static void usage(void); 143 144 static char dfmt[] = "pid,tt,state,time,command"; 145 static char jfmt[] = "user,pid,ppid,pgid,jobc,state,tt,time,command"; 146 static char lfmt[] = "uid,pid,ppid,cpu,pri,nice,vsz,rss,mwchan,state," 147 "tt,time,command"; 148 static char o1[] = "pid"; 149 static char o2[] = "tt,state,time,command"; 150 static char ufmt[] = "user,pid,%cpu,%mem,vsz,rss,tt,state,start,time,command"; 151 static char vfmt[] = "pid,state,time,sl,re,pagein,vsz,rss,lim,tsiz," 152 "%cpu,%mem,command"; 153 static char Zfmt[] = "label"; 154 155 #define PS_ARGS "AaCce" OPT_LAZY_f "G:gHhjLlM:mN:O:o:p:rSTt:U:uvwXxZ" 156 157 int 158 main(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 const char *cp, *nlistf, *memf; 166 char *cols; 167 int all, ch, dropgid, elem, flag, _fmt, i, lineno; 168 int nentries, nocludge, nkept, nselectors; 169 int prtheader, showthreads, wflag, what, xkeep, xkeep_implied; 170 char errbuf[_POSIX2_LINE_MAX]; 171 172 (void) setlocale(LC_ALL, ""); 173 time(&now); /* Used by routines in print.c. */ 174 175 if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0') 176 termwidth = atoi(cols); 177 else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 178 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 179 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) || 180 ws.ws_col == 0) 181 termwidth = 79; 182 else 183 termwidth = ws.ws_col - 1; 184 185 /* 186 * Don't apply a kludge if the first argument is an option taking an 187 * argument 188 */ 189 if (argc > 1) { 190 nocludge = 0; 191 if (argv[1][0] == '-') { 192 for (cp = PS_ARGS; *cp != '\0'; cp++) { 193 if (*cp != ':') 194 continue; 195 if (*(cp - 1) == argv[1][1]) { 196 nocludge = 1; 197 break; 198 } 199 } 200 } 201 if (nocludge == 0) 202 argv[1] = kludge_oldps_options(argv[1]); 203 } 204 205 all = dropgid = _fmt = nselectors = optfatal = 0; 206 prtheader = showthreads = wflag = xkeep_implied = 0; 207 xkeep = -1; /* Neither -x nor -X. */ 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 memf = nlistf = _PATH_DEVNULL; 216 while ((ch = getopt(argc, argv, PS_ARGS)) != -1) 217 switch((char)ch) { 218 case 'A': 219 /* 220 * Exactly the same as `-ax'. This has been 221 * added for compatability with SUSv3, but for 222 * now it will not be described in the man page. 223 */ 224 nselectors++; 225 all = xkeep = 1; 226 break; 227 case 'a': 228 nselectors++; 229 all = 1; 230 break; 231 case 'C': 232 rawcpu = 1; 233 break; 234 case 'c': 235 cflag = 1; 236 break; 237 case 'e': /* XXX set ufmt */ 238 needenv = 1; 239 break; 240 #ifdef LAZY_PS 241 case 'f': 242 if (getuid() == 0 || getgid() == 0) 243 forceuread = 1; 244 break; 245 #endif 246 case 'G': 247 add_list(&gidlist, optarg); 248 xkeep_implied = 1; 249 nselectors++; 250 break; 251 case 'g': 252 #if 0 253 /*- 254 * XXX - This SUSv3 behavior is still under debate 255 * since it conflicts with the (undocumented) 256 * `-g' option. So we skip it for now. 257 */ 258 add_list(&pgrplist, optarg); 259 xkeep_implied = 1; 260 nselectors++; 261 break; 262 #else 263 /* The historical BSD-ish (from SunOS) behavior. */ 264 break; /* no-op */ 265 #endif 266 case 'H': 267 showthreads = KERN_PROC_INC_THREAD; 268 break; 269 case 'h': 270 prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 271 break; 272 case 'j': 273 parsefmt(jfmt, 0); 274 _fmt = 1; 275 jfmt[0] = '\0'; 276 break; 277 case 'L': 278 showkey(); 279 exit(0); 280 case 'l': 281 parsefmt(lfmt, 0); 282 _fmt = 1; 283 lfmt[0] = '\0'; 284 break; 285 case 'M': 286 memf = optarg; 287 dropgid = 1; 288 break; 289 case 'm': 290 sortby = SORTMEM; 291 break; 292 case 'N': 293 nlistf = optarg; 294 dropgid = 1; 295 break; 296 case 'O': 297 parsefmt(o1, 1); 298 parsefmt(optarg, 1); 299 parsefmt(o2, 1); 300 o1[0] = o2[0] = '\0'; 301 _fmt = 1; 302 break; 303 case 'o': 304 parsefmt(optarg, 1); 305 _fmt = 1; 306 break; 307 case 'p': 308 add_list(&pidlist, optarg); 309 /* 310 * Note: `-p' does not *set* xkeep, but any values 311 * from pidlist are checked before xkeep is. That 312 * way they are always matched, even if the user 313 * specifies `-X'. 314 */ 315 nselectors++; 316 break; 317 #if 0 318 case 'R': 319 /*- 320 * XXX - This un-standard option is still under 321 * debate. This is what SUSv3 defines as 322 * the `-U' option, and while it would be 323 * nice to have, it could cause even more 324 * confusion to implement it as `-R'. 325 */ 326 add_list(&ruidlist, optarg); 327 xkeep_implied = 1; 328 nselectors++; 329 break; 330 #endif 331 case 'r': 332 sortby = SORTCPU; 333 break; 334 case 'S': 335 sumrusage = 1; 336 break; 337 #if 0 338 case 's': 339 /*- 340 * XXX - This non-standard option is still under 341 * debate. This *is* supported on Solaris, 342 * Linux, and IRIX, but conflicts with `-s' 343 * on NetBSD and maybe some older BSD's. 344 */ 345 add_list(&sesslist, optarg); 346 xkeep_implied = 1; 347 nselectors++; 348 break; 349 #endif 350 case 'T': 351 if ((optarg = ttyname(STDIN_FILENO)) == NULL) 352 errx(1, "stdin: not a terminal"); 353 /* FALLTHROUGH */ 354 case 't': 355 add_list(&ttylist, optarg); 356 xkeep_implied = 1; 357 nselectors++; 358 break; 359 case 'U': 360 /* This is what SUSv3 defines as the `-u' option. */ 361 add_list(&uidlist, optarg); 362 xkeep_implied = 1; 363 nselectors++; 364 break; 365 case 'u': 366 parsefmt(ufmt, 0); 367 sortby = SORTCPU; 368 _fmt = 1; 369 ufmt[0] = '\0'; 370 break; 371 case 'v': 372 parsefmt(vfmt, 0); 373 sortby = SORTMEM; 374 _fmt = 1; 375 vfmt[0] = '\0'; 376 break; 377 case 'w': 378 if (wflag) 379 termwidth = UNLIMITED; 380 else if (termwidth < 131) 381 termwidth = 131; 382 wflag++; 383 break; 384 case 'X': 385 /* 386 * Note that `-X' and `-x' are not standard "selector" 387 * options. For most selector-options, we check *all* 388 * processes to see if any are matched by the given 389 * value(s). After we have a set of all the matched 390 * processes, then `-X' and `-x' govern whether we 391 * modify that *matched* set for processes which do 392 * not have a controlling terminal. `-X' causes 393 * those processes to be deleted from the matched 394 * set, while `-x' causes them to be kept. 395 */ 396 xkeep = 0; 397 break; 398 case 'x': 399 xkeep = 1; 400 break; 401 case 'Z': 402 parsefmt(Zfmt, 0); 403 Zfmt[0] = '\0'; 404 break; 405 case '?': 406 default: 407 usage(); 408 } 409 argc -= optind; 410 argv += optind; 411 if (optfatal) 412 exit(1); /* Error messages already printed. */ 413 if (xkeep < 0) /* Neither -X nor -x was specified. */ 414 xkeep = xkeep_implied; 415 416 #define BACKWARD_COMPATIBILITY 417 #ifdef BACKWARD_COMPATIBILITY 418 if (*argv) { 419 nlistf = *argv; 420 if (*++argv) 421 memf = *argv; 422 } 423 #endif 424 /* 425 * Discard setgid privileges if not the running kernel so that bad 426 * guys can't print interesting stuff from kernel memory. 427 */ 428 if (dropgid) { 429 setgid(getgid()); 430 setuid(getuid()); 431 } 432 433 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 434 if (kd == 0) 435 errx(1, "%s", errbuf); 436 437 if (!_fmt) 438 parsefmt(dfmt, 0); 439 440 if (nselectors == 0) { 441 uidlist.l.ptr = malloc(sizeof(uid_t)); 442 if (uidlist.l.ptr == NULL) 443 errx(1, "malloc failed"); 444 nselectors = 1; 445 uidlist.count = uidlist.maxcount = 1; 446 *uidlist.l.uids = getuid(); 447 } 448 449 /* 450 * scan requested variables, noting what structures are needed, 451 * and adjusting header widths as appropriate. 452 */ 453 scanvars(); 454 455 /* 456 * Get process list. If the user requested just one selector- 457 * option, then kvm_getprocs can be asked to return just those 458 * processes. Otherwise, have it return all processes, and 459 * then this routine will search that full list and select the 460 * processes which match any of the user's selector-options. 461 */ 462 what = showthreads != 0 ? KERN_PROC_ALL : KERN_PROC_PROC; 463 flag = 0; 464 if (nselectors == 1) { 465 /* XXX - Apparently there's no KERN_PROC_GID flag. */ 466 if (pgrplist.count == 1) { 467 what = KERN_PROC_PGRP | showthreads; 468 flag = *pgrplist.l.pids; 469 nselectors = 0; 470 } else if (pidlist.count == 1) { 471 what = KERN_PROC_PID | showthreads; 472 flag = *pidlist.l.pids; 473 nselectors = 0; 474 } else if (ruidlist.count == 1) { 475 what = KERN_PROC_RUID | showthreads; 476 flag = *ruidlist.l.uids; 477 nselectors = 0; 478 #if 0 479 /*- 480 * XXX - KERN_PROC_SESSION causes error in kvm_getprocs? 481 * For now, always do sid-matching in this routine. 482 */ 483 } else if (sesslist.count == 1) { 484 what = KERN_PROC_SESSION | showthreads; 485 flag = *sesslist.l.pids; 486 nselectors = 0; 487 #endif 488 } else if (ttylist.count == 1) { 489 what = KERN_PROC_TTY | showthreads; 490 flag = *ttylist.l.ttys; 491 nselectors = 0; 492 } else if (uidlist.count == 1) { 493 what = KERN_PROC_UID | showthreads; 494 flag = *uidlist.l.uids; 495 nselectors = 0; 496 } else if (all) { 497 /* No need for this routine to select processes. */ 498 nselectors = 0; 499 } 500 } 501 502 /* 503 * select procs 504 */ 505 nentries = -1; 506 kp = kvm_getprocs(kd, what, flag, &nentries); 507 if ((kp == NULL && nentries > 0) || (kp != NULL && nentries < 0)) 508 errx(1, "%s", kvm_geterr(kd)); 509 nkept = 0; 510 if (nentries > 0) { 511 if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL) 512 errx(1, "malloc failed"); 513 for (i = nentries; --i >= 0; ++kp) { 514 /* 515 * If the user specified multiple selection-criteria, 516 * then keep any process matched by the inclusive OR 517 * of all the selection-criteria given. 518 */ 519 if (pidlist.count > 0) { 520 for (elem = 0; elem < pidlist.count; elem++) 521 if (kp->ki_pid == pidlist.l.pids[elem]) 522 goto keepit; 523 } 524 /* 525 * Note that we had to process pidlist before 526 * filtering out processes which do not have 527 * a controlling terminal. 528 */ 529 if (xkeep == 0) { 530 if ((kp->ki_tdev == NODEV || 531 (kp->ki_flag & P_CONTROLT) == 0)) 532 continue; 533 } 534 if (nselectors == 0) 535 goto keepit; 536 if (gidlist.count > 0) { 537 for (elem = 0; elem < gidlist.count; elem++) 538 if (kp->ki_rgid == gidlist.l.gids[elem]) 539 goto keepit; 540 } 541 if (pgrplist.count > 0) { 542 for (elem = 0; elem < pgrplist.count; elem++) 543 if (kp->ki_pgid == 544 pgrplist.l.pids[elem]) 545 goto keepit; 546 } 547 if (ruidlist.count > 0) { 548 for (elem = 0; elem < ruidlist.count; elem++) 549 if (kp->ki_ruid == 550 ruidlist.l.uids[elem]) 551 goto keepit; 552 } 553 if (sesslist.count > 0) { 554 for (elem = 0; elem < sesslist.count; elem++) 555 if (kp->ki_sid == sesslist.l.pids[elem]) 556 goto keepit; 557 } 558 if (ttylist.count > 0) { 559 for (elem = 0; elem < ttylist.count; elem++) 560 if (kp->ki_tdev == ttylist.l.ttys[elem]) 561 goto keepit; 562 } 563 if (uidlist.count > 0) { 564 for (elem = 0; elem < uidlist.count; elem++) 565 if (kp->ki_uid == uidlist.l.uids[elem]) 566 goto keepit; 567 } 568 /* 569 * This process did not match any of the user's 570 * selector-options, so skip the process. 571 */ 572 continue; 573 574 keepit: 575 kinfo[nkept].ki_p = kp; 576 if (needuser) 577 saveuser(&kinfo[nkept]); 578 dynsizevars(&kinfo[nkept]); 579 nkept++; 580 } 581 } 582 583 sizevars(); 584 585 /* 586 * print header 587 */ 588 printheader(); 589 if (nkept == 0) 590 exit(1); 591 592 /* 593 * sort proc list 594 */ 595 qsort(kinfo, nkept, sizeof(KINFO), pscomp); 596 /* 597 * For each process, call each variable output function. 598 */ 599 for (i = lineno = 0; i < nkept; i++) { 600 for (vent = vhead; vent; vent = vent->next) { 601 (vent->var->oproc)(&kinfo[i], vent); 602 if (vent->next != NULL) 603 (void)putchar(' '); 604 } 605 (void)putchar('\n'); 606 if (prtheader && lineno++ == prtheader - 4) { 607 (void)putchar('\n'); 608 printheader(); 609 lineno = 0; 610 } 611 } 612 free_list(&gidlist); 613 free_list(&pidlist); 614 free_list(&pgrplist); 615 free_list(&ruidlist); 616 free_list(&sesslist); 617 free_list(&ttylist); 618 free_list(&uidlist); 619 620 exit(eval); 621 } 622 623 static int 624 addelem_gid(struct listinfo *inf, const char *elem) 625 { 626 struct group *grp; 627 const char *nameorID; 628 char *endp; 629 u_long bigtemp; 630 631 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 632 if (*elem == '\0') 633 warnx("Invalid (zero-length) %s name", inf->lname); 634 else 635 warnx("%s name too long: %s", inf->lname, elem); 636 optfatal = 1; 637 return (0); /* Do not add this value. */ 638 } 639 640 /* 641 * SUSv3 states that `ps -G grouplist' should match "real-group 642 * ID numbers", and does not mention group-names. I do want to 643 * also support group-names, so this tries for a group-id first, 644 * and only tries for a name if that doesn't work. This is the 645 * opposite order of what is done in addelem_uid(), but in 646 * practice the order would only matter for group-names which 647 * are all-numeric. 648 */ 649 grp = NULL; 650 nameorID = "named"; 651 errno = 0; 652 bigtemp = strtoul(elem, &endp, 10); 653 if (errno == 0 && *endp == '\0' && bigtemp <= GID_MAX) { 654 nameorID = "name or ID matches"; 655 grp = getgrgid((gid_t)bigtemp); 656 } 657 if (grp == NULL) 658 grp = getgrnam(elem); 659 if (grp == NULL) { 660 warnx("No %s %s '%s'", inf->lname, nameorID, elem); 661 optfatal = 1; 662 return (0); /* Do not add this value. */ 663 } 664 665 if (inf->count >= inf->maxcount) 666 expand_list(inf); 667 inf->l.gids[(inf->count)++] = grp->gr_gid; 668 return (1); 669 } 670 671 #define BSD_PID_MAX 99999 /* Copy of PID_MAX from sys/proc.h. */ 672 static int 673 addelem_pid(struct listinfo *inf, const char *elem) 674 { 675 char *endp; 676 long tempid; 677 678 if (*elem == '\0') 679 tempid = 0L; 680 else { 681 errno = 0; 682 tempid = strtol(elem, &endp, 10); 683 if (*endp != '\0' || tempid < 0 || elem == endp) { 684 warnx("Invalid %s: %s", inf->lname, elem); 685 errno = ERANGE; 686 } else if (errno != 0 || tempid > BSD_PID_MAX) { 687 warnx("%s too large: %s", inf->lname, elem); 688 errno = ERANGE; 689 } 690 if (errno == ERANGE) { 691 optfatal = 1; 692 return (0); /* Do not add this value. */ 693 } 694 } 695 696 if (inf->count >= inf->maxcount) 697 expand_list(inf); 698 inf->l.pids[(inf->count)++] = tempid; 699 return (1); 700 } 701 #undef BSD_PID_MAX 702 703 static int 704 addelem_tty(struct listinfo *inf, const char *elem) 705 { 706 const char *ttypath; 707 struct stat sb; 708 char pathbuf[PATH_MAX]; 709 710 if (strcmp(elem, "co") == 0) 711 ttypath = strdup(_PATH_CONSOLE); 712 else if (*elem == '/') 713 ttypath = elem; 714 else { 715 strlcpy(pathbuf, _PATH_TTY, sizeof(pathbuf)); 716 strlcat(pathbuf, elem, sizeof(pathbuf)); 717 ttypath = pathbuf; 718 } 719 720 if (stat(ttypath, &sb) == -1) { 721 warn("%s", ttypath); 722 optfatal = 1; 723 return (0); /* Do not add this value. */ 724 } 725 if (!S_ISCHR(sb.st_mode)) { 726 warn("%s: Not a terminal", ttypath); 727 optfatal = 1; 728 return (0); /* Do not add this value. */ 729 } 730 731 if (inf->count >= inf->maxcount) 732 expand_list(inf); 733 inf->l.ttys[(inf->count)++] = sb.st_rdev; 734 return (1); 735 } 736 737 static int 738 addelem_uid(struct listinfo *inf, const char *elem) 739 { 740 struct passwd *pwd; 741 char *endp; 742 u_long bigtemp; 743 744 if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 745 if (*elem == '\0') 746 warnx("Invalid (zero-length) %s name", inf->lname); 747 else 748 warnx("%s name too long: %s", inf->lname, elem); 749 optfatal = 1; 750 return (0); /* Do not add this value. */ 751 } 752 753 pwd = getpwnam(elem); 754 if (pwd == NULL) { 755 errno = 0; 756 bigtemp = strtoul(elem, &endp, 10); 757 if (errno != 0 || *endp != '\0' || bigtemp > UID_MAX) 758 warnx("No %s named '%s'", inf->lname, elem); 759 else { 760 /* The string is all digits, so it might be a userID. */ 761 pwd = getpwuid((uid_t)bigtemp); 762 if (pwd == NULL) 763 warnx("No %s name or ID matches '%s'", 764 inf->lname, elem); 765 } 766 } 767 if (pwd == NULL) { 768 /* 769 * These used to be treated as minor warnings (and the 770 * option was simply ignored), but now they are fatal 771 * errors (and the command will be aborted). 772 */ 773 optfatal = 1; 774 return (0); /* Do not add this value. */ 775 } 776 777 if (inf->count >= inf->maxcount) 778 expand_list(inf); 779 inf->l.uids[(inf->count)++] = pwd->pw_uid; 780 return (1); 781 } 782 783 static void 784 add_list(struct listinfo *inf, const char *argp) 785 { 786 const char *savep; 787 char *cp, *endp; 788 int toolong; 789 char elemcopy[PATH_MAX]; 790 791 while (*argp != '\0') { 792 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 793 argp++; 794 savep = argp; 795 toolong = 0; 796 cp = elemcopy; 797 if (strchr(T_SEP, *argp) == NULL) { 798 endp = elemcopy + sizeof(elemcopy) - 1; 799 while (*argp != '\0' && cp <= endp && 800 strchr(W_SEP T_SEP, *argp) == NULL) 801 *cp++ = *argp++; 802 if (cp > endp) 803 toolong = 1; 804 } 805 if (!toolong) { 806 *cp = '\0'; 807 #ifndef ADD_PS_LISTRESET 808 /* 809 * This is how the standard expects lists to 810 * be handled. 811 */ 812 inf->addelem(inf, elemcopy); 813 #else 814 /*- 815 * This would add a simple non-standard-but-convienent 816 * feature. 817 * 818 * XXX - The first time I tried to add this check, 819 * it increased the total size of `ps' by 3940 820 * bytes on i386! That's 12% of the entire 821 * program! The `ps.o' file grew by only about 822 * 40 bytes, but the final (stripped) executable 823 * in /bin/ps grew by 12%. I have not had time 824 * to investigate, so skip the feature for now. 825 */ 826 /* 827 * We now have a single element. Add it to the 828 * list, unless the element is ":". In that case, 829 * reset the list so previous entries are ignored. 830 */ 831 if (strcmp(elemcopy, ":") == 0) 832 inf->count = 0; 833 else 834 inf->addelem(inf, elemcopy); 835 #endif 836 } else { 837 /* 838 * The string is too long to copy. Find the end 839 * of the string to print out the warning message. 840 */ 841 while (*argp != '\0' && strchr(W_SEP T_SEP, 842 *argp) == NULL) 843 argp++; 844 warnx("Value too long: %.*s", (int)(argp - savep), 845 savep); 846 optfatal = 1; 847 } 848 /* 849 * Skip over any number of trailing whitespace characters, 850 * but only one (at most) trailing element-terminating 851 * character. 852 */ 853 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 854 argp++; 855 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) { 856 argp++; 857 /* Catch case where string ended with a comma. */ 858 if (*argp == '\0') 859 inf->addelem(inf, argp); 860 } 861 } 862 } 863 864 static void * 865 expand_list(struct listinfo *inf) 866 { 867 void *newlist; 868 int newmax; 869 870 newmax = (inf->maxcount + 1) << 1; 871 newlist = realloc(inf->l.ptr, newmax * inf->elemsize); 872 if (newlist == NULL) { 873 free(inf->l.ptr); 874 errx(1, "realloc to %d %ss failed", newmax, 875 inf->lname); 876 } 877 inf->maxcount = newmax; 878 inf->l.ptr = newlist; 879 880 return (newlist); 881 } 882 883 static void 884 free_list(struct listinfo *inf) 885 { 886 887 inf->count = inf->elemsize = inf->maxcount = 0; 888 if (inf->l.ptr != NULL) 889 free(inf->l.ptr); 890 inf->addelem = NULL; 891 inf->lname = NULL; 892 inf->l.ptr = NULL; 893 } 894 895 static void 896 init_list(struct listinfo *inf, addelem_rtn artn, int elemsize, 897 const char *lname) 898 { 899 900 inf->count = inf->maxcount = 0; 901 inf->elemsize = elemsize; 902 inf->addelem = artn; 903 inf->lname = lname; 904 inf->l.ptr = NULL; 905 } 906 907 VARENT * 908 find_varentry(VAR *v) 909 { 910 struct varent *vent; 911 912 for (vent = vhead; vent; vent = vent->next) { 913 if (strcmp(vent->var->name, v->name) == 0) 914 return vent; 915 } 916 return NULL; 917 } 918 919 static void 920 scanvars(void) 921 { 922 struct varent *vent; 923 VAR *v; 924 925 for (vent = vhead; vent; vent = vent->next) { 926 v = vent->var; 927 if (v->flag & DSIZ) { 928 v->dwidth = v->width; 929 v->width = 0; 930 } 931 if (v->flag & USER) 932 needuser = 1; 933 if (v->flag & COMM) 934 needcomm = 1; 935 } 936 } 937 938 static void 939 dynsizevars(KINFO *ki) 940 { 941 struct varent *vent; 942 VAR *v; 943 int i; 944 945 for (vent = vhead; vent; vent = vent->next) { 946 v = vent->var; 947 if (!(v->flag & DSIZ)) 948 continue; 949 i = (v->sproc)( ki); 950 if (v->width < i) 951 v->width = i; 952 if (v->width > v->dwidth) 953 v->width = v->dwidth; 954 } 955 } 956 957 static void 958 sizevars(void) 959 { 960 struct varent *vent; 961 VAR *v; 962 int i; 963 964 for (vent = vhead; vent; vent = vent->next) { 965 v = vent->var; 966 i = strlen(vent->header); 967 if (v->width < i) 968 v->width = i; 969 totwidth += v->width + 1; /* +1 for space */ 970 } 971 totwidth--; 972 } 973 974 static const char * 975 fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki, 976 char *comm, int maxlen) 977 { 978 const char *s; 979 980 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, maxlen); 981 return (s); 982 } 983 984 #define UREADOK(ki) (forceuread || (ki->ki_p->ki_sflag & PS_INMEM)) 985 986 static void 987 saveuser(KINFO *ki) 988 { 989 990 if (ki->ki_p->ki_sflag & PS_INMEM) { 991 /* 992 * The u-area might be swapped out, and we can't get 993 * at it because we have a crashdump and no swap. 994 * If it's here fill in these fields, otherwise, just 995 * leave them 0. 996 */ 997 ki->ki_valid = 1; 998 } else 999 ki->ki_valid = 0; 1000 /* 1001 * save arguments if needed 1002 */ 1003 if (needcomm && (UREADOK(ki) || (ki->ki_p->ki_args != NULL))) { 1004 ki->ki_args = strdup(fmt(kvm_getargv, ki, ki->ki_p->ki_comm, 1005 MAXCOMLEN)); 1006 } else if (needcomm) { 1007 asprintf(&ki->ki_args, "(%s)", ki->ki_p->ki_comm); 1008 } else { 1009 ki->ki_args = NULL; 1010 } 1011 if (needenv && UREADOK(ki)) { 1012 ki->ki_env = strdup(fmt(kvm_getenvv, ki, (char *)NULL, 0)); 1013 } else if (needenv) { 1014 ki->ki_env = malloc(3); 1015 strcpy(ki->ki_env, "()"); 1016 } else { 1017 ki->ki_env = NULL; 1018 } 1019 } 1020 1021 static int 1022 pscomp(const void *a, const void *b) 1023 { 1024 const KINFO *ka, *kb; 1025 double cpua, cpub; 1026 segsz_t sizea, sizeb; 1027 1028 ka = a; 1029 kb = b; 1030 /* SORTCPU and SORTMEM are sorted in descending order. */ 1031 if (sortby == SORTCPU) { 1032 cpua = getpcpu(ka); 1033 cpub = getpcpu(kb); 1034 if (cpua < cpub) 1035 return (1); 1036 if (cpua > cpub) 1037 return (-1); 1038 } 1039 if (sortby == SORTMEM) { 1040 sizea = ka->ki_p->ki_tsize + ka->ki_p->ki_dsize + 1041 ka->ki_p->ki_ssize; 1042 sizeb = kb->ki_p->ki_tsize + kb->ki_p->ki_dsize + 1043 kb->ki_p->ki_ssize; 1044 if (sizea < sizeb) 1045 return (1); 1046 if (sizea > sizeb) 1047 return (-1); 1048 } 1049 /* 1050 * TTY's are sorted in ascending order, except that all NODEV 1051 * processes come before all processes with a device. 1052 */ 1053 if (ka->ki_p->ki_tdev == NODEV && kb->ki_p->ki_tdev != NODEV) 1054 return (-1); 1055 if (ka->ki_p->ki_tdev != NODEV && kb->ki_p->ki_tdev == NODEV) 1056 return (1); 1057 if (ka->ki_p->ki_tdev < kb->ki_p->ki_tdev) 1058 return (-1); 1059 if (ka->ki_p->ki_tdev > kb->ki_p->ki_tdev) 1060 return (1); 1061 /* PID's are sorted in ascending order. */ 1062 if (ka->ki_p->ki_pid < kb->ki_p->ki_pid) 1063 return (-1); 1064 if (ka->ki_p->ki_pid > kb->ki_p->ki_pid) 1065 return (1); 1066 return (0); 1067 } 1068 1069 /* 1070 * ICK (all for getopt), would rather hide the ugliness 1071 * here than taint the main code. 1072 * 1073 * ps foo -> ps -foo 1074 * ps 34 -> ps -p34 1075 * 1076 * The old convention that 't' with no trailing tty arg means the users 1077 * tty, is only supported if argv[1] doesn't begin with a '-'. This same 1078 * feature is available with the option 'T', which takes no argument. 1079 */ 1080 static char * 1081 kludge_oldps_options(char *s) 1082 { 1083 int have_fmt; 1084 size_t len; 1085 char *newopts, *ns, *cp; 1086 1087 /* 1088 * If we have an 'o' option, then note it, since we don't want to do 1089 * some types of munging. 1090 */ 1091 have_fmt = index(s, 'o') != NULL; 1092 1093 len = strlen(s); 1094 if ((newopts = ns = malloc(len + 2)) == NULL) 1095 errx(1, "malloc failed"); 1096 /* 1097 * options begin with '-' 1098 */ 1099 if (*s != '-') 1100 *ns++ = '-'; /* add option flag */ 1101 /* 1102 * gaze to end of argv[1] 1103 */ 1104 cp = s + len - 1; 1105 /* 1106 * if last letter is a 't' flag with no argument (in the context 1107 * of the oldps options -- option string NOT starting with a '-' -- 1108 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 1109 * 1110 * However, if a flag accepting a string argument is found in the 1111 * option string, the remainder of the string is the argument to 1112 * that flag; do not modify that argument. 1113 */ 1114 if (strcspn(s, "MNOoU") == len && *cp == 't' && *s != '-') 1115 *cp = 'T'; 1116 else { 1117 /* 1118 * otherwise check for trailing number, which *may* be a 1119 * pid. 1120 */ 1121 while (cp >= s && isdigit(*cp)) 1122 --cp; 1123 } 1124 cp++; 1125 memmove(ns, s, (size_t)(cp - s)); /* copy up to trailing number */ 1126 ns += cp - s; 1127 /* 1128 * if there's a trailing number, and not a preceding 'p' (pid) or 1129 * 't' (tty) flag, then assume it's a pid and insert a 'p' flag. 1130 */ 1131 if (isdigit(*cp) && 1132 (cp == s || (cp[-1] != 't' && cp[-1] != 'p')) && 1133 (cp - 1 == s || cp[-2] != 't') && !have_fmt) 1134 *ns++ = 'p'; 1135 (void)strcpy(ns, cp); /* and append the number */ 1136 1137 return (newopts); 1138 } 1139 1140 static void 1141 usage(void) 1142 { 1143 #define SINGLE_OPTS "[-aC" OPT_LAZY_f "HhjlmrSTuvwXxZ]" 1144 1145 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 1146 "usage: ps " SINGLE_OPTS " [-G gid[,gid]] [-O|o fmt]", 1147 " [-p pid[,pid]] [-t tty[,tty]] [-U user[,user]]", 1148 " [-M core] [-N system]", 1149 " ps [-L]"); 1150 exit(1); 1151 } 1152