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