ps.c revision 1.47
1 /* $NetBSD: ps.c,v 1.47 2002/06/19 08:11:56 jdolecek Exp $ */ 2 3 /* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Simon Burge. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1990, 1993, 1994 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 */ 71 72 #include <sys/cdefs.h> 73 #ifndef lint 74 __COPYRIGHT("@(#) Copyright (c) 1990, 1993, 1994\n\ 75 The Regents of the University of California. All rights reserved.\n"); 76 #endif /* not lint */ 77 78 #ifndef lint 79 #if 0 80 static char sccsid[] = "@(#)ps.c 8.4 (Berkeley) 4/2/94"; 81 #else 82 __RCSID("$NetBSD: ps.c,v 1.47 2002/06/19 08:11:56 jdolecek Exp $"); 83 #endif 84 #endif /* not lint */ 85 86 #include <sys/param.h> 87 #include <sys/user.h> 88 #include <sys/time.h> 89 #include <sys/resource.h> 90 #include <sys/proc.h> 91 #include <sys/stat.h> 92 #include <sys/ioctl.h> 93 #include <sys/sysctl.h> 94 95 #include <ctype.h> 96 #include <err.h> 97 #include <errno.h> 98 #include <fcntl.h> 99 #include <kvm.h> 100 #include <limits.h> 101 #include <nlist.h> 102 #include <paths.h> 103 #include <pwd.h> 104 #include <stdio.h> 105 #include <stdlib.h> 106 #include <string.h> 107 #include <unistd.h> 108 109 #include "ps.h" 110 111 /* 112 * ARGOPTS must contain all option characters that take arguments 113 * (except for 't'!) - it is used in kludge_oldps_options() 114 */ 115 #define GETOPTSTR "acCeghjKLlM:mN:O:o:p:rSTt:U:uvW:wx" 116 #define ARGOPTS "MNOopUW" 117 118 struct kinfo_proc2 *kinfo; 119 struct varent *vhead, *vtail; 120 121 int eval; /* exit value */ 122 int rawcpu; /* -C */ 123 int sumrusage; /* -S */ 124 int termwidth; /* width of screen (0 == infinity) */ 125 int totwidth; /* calculated width of requested variables */ 126 127 int needcomm, needenv, commandonly, use_procfs; 128 uid_t myuid; 129 130 enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 131 132 static struct kinfo_proc2 133 *getkinfo_kvm __P((kvm_t *, int, int, int *)); 134 static char *kludge_oldps_options __P((char *)); 135 static int pscomp __P((const void *, const void *)); 136 static void scanvars __P((void)); 137 static void usage __P((void)); 138 int main __P((int, char *[])); 139 140 char dfmt[] = "pid tt state time command"; 141 char jfmt[] = "user pid ppid pgid sess jobc state tt time command"; 142 char lfmt[] = "uid pid ppid cpu pri nice vsz rss wchan state tt time command"; 143 char o1[] = "pid"; 144 char o2[] = "tt state time command"; 145 char ufmt[] = "user pid %cpu %mem vsz rss tt state start time command"; 146 char vfmt[] = "pid state time sl re pagein vsz rss lim tsiz %cpu %mem command"; 147 148 kvm_t *kd; 149 150 int 151 main(argc, argv) 152 int argc; 153 char *argv[]; 154 { 155 struct varent *vent; 156 struct winsize ws; 157 int ch, flag, i, fmt, lineno, nentries; 158 int prtheader, wflag, what, xflg, mode; 159 char *nlistf, *memf, *swapf, errbuf[_POSIX2_LINE_MAX]; 160 char *ttname; 161 162 if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 163 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 164 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) || 165 ws.ws_col == 0) 166 termwidth = 79; 167 else 168 termwidth = ws.ws_col - 1; 169 170 if (argc > 1) 171 argv[1] = kludge_oldps_options(argv[1]); 172 173 fmt = prtheader = wflag = xflg = 0; 174 what = KERN_PROC_UID; 175 flag = myuid = getuid(); 176 memf = nlistf = swapf = NULL; 177 mode = PRINTMODE; 178 while ((ch = getopt(argc, argv, GETOPTSTR)) != -1) 179 switch((char)ch) { 180 case 'a': 181 what = KERN_PROC_ALL; 182 flag = 0; 183 break; 184 case 'c': 185 commandonly = 1; 186 break; 187 case 'e': /* XXX set ufmt */ 188 needenv = 1; 189 break; 190 case 'C': 191 rawcpu = 1; 192 break; 193 case 'g': 194 break; /* no-op */ 195 case 'h': 196 prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 197 break; 198 case 'j': 199 parsefmt(jfmt); 200 fmt = 1; 201 jfmt[0] = '\0'; 202 break; 203 case 'K': 204 break; /* no-op - was dontuseprocfs */ 205 case 'L': 206 showkey(); 207 exit(0); 208 /* NOTREACHED */ 209 case 'l': 210 parsefmt(lfmt); 211 fmt = 1; 212 lfmt[0] = '\0'; 213 break; 214 case 'M': 215 memf = optarg; 216 break; 217 case 'm': 218 sortby = SORTMEM; 219 break; 220 case 'N': 221 nlistf = optarg; 222 break; 223 case 'O': 224 parsefmt(o1); 225 parsefmt(optarg); 226 parsefmt(o2); 227 o1[0] = o2[0] = '\0'; 228 fmt = 1; 229 break; 230 case 'o': 231 parsefmt(optarg); 232 fmt = 1; 233 break; 234 case 'p': 235 what = KERN_PROC_PID; 236 flag = atol(optarg); 237 xflg = 1; 238 break; 239 case 'r': 240 sortby = SORTCPU; 241 break; 242 case 'S': 243 sumrusage = 1; 244 break; 245 case 'T': 246 if ((ttname = ttyname(STDIN_FILENO)) == NULL) 247 errx(1, "stdin: not a terminal"); 248 goto tty; 249 case 't': 250 ttname = optarg; 251 tty: { 252 struct stat sb; 253 char *ttypath, pathbuf[MAXPATHLEN]; 254 255 flag = 0; 256 if (strcmp(ttname, "?") == 0) 257 flag = KERN_PROC_TTY_NODEV; 258 else if (strcmp(ttname, "-") == 0) 259 flag = KERN_PROC_TTY_REVOKE; 260 else if (strcmp(ttname, "co") == 0) 261 ttypath = _PATH_CONSOLE; 262 else if (*ttname != '/') 263 (void)snprintf(ttypath = pathbuf, 264 sizeof(pathbuf), "%s%s", _PATH_TTY, ttname); 265 else 266 ttypath = ttname; 267 what = KERN_PROC_TTY; 268 if (flag == 0) { 269 if (stat(ttypath, &sb) == -1) 270 err(1, "%s", ttypath); 271 if (!S_ISCHR(sb.st_mode)) 272 errx(1, "%s: not a terminal", ttypath); 273 flag = sb.st_rdev; 274 } 275 break; 276 } 277 case 'U': 278 if (*optarg != '\0') { 279 struct passwd *pw; 280 char *ep; 281 282 what = KERN_PROC_UID; 283 pw = getpwnam(optarg); 284 if (pw == NULL) { 285 errno = 0; 286 flag = strtoul(optarg, &ep, 10); 287 if (errno) 288 err(1, "%s", optarg); 289 if (*ep != '\0') 290 errx(1, "%s: illegal user name", 291 optarg); 292 } else 293 flag = pw->pw_uid; 294 } 295 break; 296 case 'u': 297 parsefmt(ufmt); 298 sortby = SORTCPU; 299 fmt = 1; 300 ufmt[0] = '\0'; 301 break; 302 case 'v': 303 parsefmt(vfmt); 304 sortby = SORTMEM; 305 fmt = 1; 306 vfmt[0] = '\0'; 307 break; 308 case 'W': 309 swapf = optarg; 310 break; 311 case 'w': 312 if (wflag) 313 termwidth = UNLIMITED; 314 else if (termwidth < 131) 315 termwidth = 131; 316 wflag++; 317 break; 318 case 'x': 319 xflg = 1; 320 break; 321 case '?': 322 default: 323 usage(); 324 } 325 argc -= optind; 326 argv += optind; 327 328 #define BACKWARD_COMPATIBILITY 329 #ifdef BACKWARD_COMPATIBILITY 330 if (*argv) { 331 nlistf = *argv; 332 if (*++argv) { 333 memf = *argv; 334 if (*++argv) 335 swapf = *argv; 336 } 337 } 338 #endif 339 340 if (memf == NULL && swapf == NULL) { 341 kd = kvm_openfiles(nlistf, memf, swapf, KVM_NO_FILES, errbuf); 342 donlist_sysctl(); 343 } else 344 kd = kvm_openfiles(nlistf, memf, swapf, O_RDONLY, errbuf); 345 346 if (kd == 0) 347 errx(1, "%s", errbuf); 348 349 if (!fmt) 350 parsefmt(dfmt); 351 352 /* 353 * scan requested variables, noting what structures are needed. 354 */ 355 scanvars(); 356 357 /* 358 * select procs 359 */ 360 if (!kd || !(kinfo = getkinfo_kvm(kd, what, flag, &nentries))) 361 { 362 if (kd) 363 warnx("%s.", kvm_geterr(kd)); 364 exit(1); 365 } 366 if (nentries == 0) { 367 printheader(); 368 exit(1); 369 } 370 /* 371 * sort proc list 372 */ 373 qsort(kinfo, nentries, sizeof(struct kinfo_proc2), pscomp); 374 /* 375 * For each proc, call each variable output function in 376 * "setwidth" mode to determine the widest element of 377 * the column. 378 */ 379 if (mode == PRINTMODE) 380 for (i = 0; i < nentries; i++) { 381 struct kinfo_proc2 *ki = &kinfo[i]; 382 383 if (xflg == 0 && (ki->p_tdev == NODEV || 384 (ki->p_flag & P_CONTROLT) == 0)) 385 continue; 386 for (vent = vhead; vent; vent = vent->next) 387 (vent->var->oproc)(ki, vent, WIDTHMODE); 388 } 389 /* 390 * Print header - AFTER determining process field widths. 391 * printheader() also adds up the total width of all 392 * fields the first time it's called. 393 */ 394 printheader(); 395 /* 396 * For each proc, call each variable output function in 397 * print mode. 398 */ 399 for (i = lineno = 0; i < nentries; i++) { 400 struct kinfo_proc2 *ki = &kinfo[i]; 401 402 if (xflg == 0 && (ki->p_tdev == NODEV || 403 (ki->p_flag & P_CONTROLT ) == 0)) 404 continue; 405 for (vent = vhead; vent; vent = vent->next) { 406 (vent->var->oproc)(ki, vent, mode); 407 if (vent->next != NULL) 408 (void)putchar(' '); 409 } 410 (void)putchar('\n'); 411 if (prtheader && lineno++ == prtheader - 4) { 412 (void)putchar('\n'); 413 printheader(); 414 lineno = 0; 415 } 416 } 417 exit(eval); 418 /* NOTREACHED */ 419 } 420 421 static struct kinfo_proc2 * 422 getkinfo_kvm(kdp, what, flag, nentriesp) 423 kvm_t *kdp; 424 int what, flag, *nentriesp; 425 { 426 return (kvm_getproc2(kdp, what, flag, sizeof(struct kinfo_proc2), 427 nentriesp)); 428 } 429 430 static void 431 scanvars() 432 { 433 struct varent *vent; 434 VAR *v; 435 436 for (vent = vhead; vent; vent = vent->next) { 437 v = vent->var; 438 if (v->flag & COMM) { 439 needcomm = 1; 440 break; 441 } 442 } 443 } 444 445 static int 446 pscomp(a, b) 447 const void *a, *b; 448 { 449 struct kinfo_proc2 *ka = (struct kinfo_proc2 *)a; 450 struct kinfo_proc2 *kb = (struct kinfo_proc2 *)b; 451 452 int i; 453 #define VSIZE(k) (k->p_vm_dsize + k->p_vm_ssize + k->p_vm_tsize) 454 455 if (sortby == SORTCPU) 456 return (getpcpu(kb) - getpcpu(ka)); 457 if (sortby == SORTMEM) 458 return (VSIZE(kb) - VSIZE(ka)); 459 i = ka->p_tdev - kb->p_tdev; 460 461 if (i == 0) 462 i = ka->p_pid - kb->p_pid; 463 return (i); 464 } 465 466 /* 467 * ICK (all for getopt), would rather hide the ugliness 468 * here than taint the main code. 469 * 470 * ps foo -> ps -foo 471 * ps 34 -> ps -p34 472 * 473 * The old convention that 't' with no trailing tty arg means the user's 474 * tty, is only supported if argv[1] doesn't begin with a '-'. This same 475 * feature is available with the option 'T', which takes no argument. 476 */ 477 static char * 478 kludge_oldps_options(s) 479 char *s; 480 { 481 size_t len; 482 char *newopts, *ns, *cp; 483 484 len = strlen(s); 485 if ((newopts = ns = malloc(len + 3)) == NULL) 486 err(1, NULL); 487 /* 488 * options begin with '-' 489 */ 490 if (*s != '-') 491 *ns++ = '-'; /* add option flag */ 492 /* 493 * gaze to end of argv[1] 494 */ 495 cp = s + len - 1; 496 /* 497 * if the last letter is a 't' flag and there are no other option 498 * characters that take arguments (eg U, p, o) in the option 499 * string and the option string doesn't start with a '-' then 500 * convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 501 */ 502 if (*cp == 't' && *s != '-' && strpbrk(s, ARGOPTS) == NULL) 503 *cp = 'T'; 504 else { 505 /* 506 * otherwise check for trailing number, which *may* be a 507 * pid. 508 */ 509 while (cp >= s && isdigit(*cp)) 510 --cp; 511 } 512 cp++; 513 memmove(ns, s, (size_t)(cp - s)); /* copy up to trailing number */ 514 ns += cp - s; 515 /* 516 * if there's a trailing number, and not a preceding 'p' (pid) or 517 * 't' (tty) flag, then assume it's a pid and insert a 'p' flag. 518 */ 519 if (isdigit(*cp) && 520 (cp == s || (cp[-1] != 'U' && cp[-1] != 't' && cp[-1] != 'p' && 521 (cp - 1 == s || cp[-2] != 't')))) 522 *ns++ = 'p'; 523 /* and append the number */ 524 (void)strcpy(ns, cp); /* XXX strcpy is safe here */ 525 526 return (newopts); 527 } 528 529 static void 530 usage() 531 { 532 533 (void)fprintf(stderr, 534 "usage:\t%s\n\t %s\n\t%s\n", 535 "ps [-acCehjlmrSTuvwx] [-O|o fmt] [-p pid] [-t tty]", 536 "[-M core] [-N system] [-W swap] [-U username]", 537 "ps [-L]"); 538 exit(1); 539 /* NOTREACHED */ 540 } 541
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