ps.c revision 1.2
1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * 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 * PATCHES MAGIC LEVEL PATCH THAT GOT US HERE 34 * -------------------- ----- ---------------------- 35 * CURRENT PATCH LEVEL: 1 00036 36 * -------------------- ----- ---------------------- 37 * 38 * 14 Sep 92 Goran Hammarback Fixed ps exception due to gcc bug 39 */ 40 41 #ifndef lint 42 char copyright[] = 43 "@(#) Copyright (c) 1990 The Regents of the University of California.\n\ 44 All rights reserved.\n"; 45 #endif /* not lint */ 46 47 #ifndef lint 48 static char sccsid[] = "@(#)ps.c 5.43 (Berkeley) 7/1/91"; 49 #endif /* not lint */ 50 51 #include <sys/param.h> 52 #include <sys/user.h> 53 #include <sys/time.h> 54 #include <sys/resource.h> 55 #include <sys/proc.h> 56 #include <sys/stat.h> 57 #include <sys/ioctl.h> 58 #include <sys/kinfo.h> 59 #include <nlist.h> 60 #include <kvm.h> 61 #include <errno.h> 62 #include <unistd.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <paths.h> 67 #include "ps.h" 68 69 #ifdef SPPWAIT 70 #define NEWVM 71 #endif 72 73 KINFO *kinfo; 74 struct varent *vhead, *vtail; 75 76 int eval; /* exit value */ 77 int rawcpu; /* -C */ 78 int sumrusage; /* -S */ 79 int termwidth; /* width of screen (0 == infinity) */ 80 int totwidth; /* calculated width of requested variables */ 81 82 static int needuser, needcomm; 83 84 enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 85 86 uid_t getuid(); 87 char *ttyname(); 88 double getpcpu(); /* 14 Sep 92*/ 89 90 char dfmt[] = "pid tt state time command"; 91 char jfmt[] = "user pid ppid pgid sess jobc state tt time command"; 92 char lfmt[] = "uid pid ppid cpu pri nice vsz rss wchan state tt time command"; 93 char o1[] = "pid"; 94 char o2[] = "tt state time command"; 95 char ufmt[] = "user pid %cpu %mem vsz rss tt state start time command"; 96 char vfmt[] = 97 "pid state time sl re pagein vsz rss lim tsiz trs %cpu %mem command"; 98 99 main(argc, argv) 100 int argc; 101 char **argv; 102 { 103 extern char *optarg; 104 extern int optind; 105 register struct proc *p; 106 register size_t nentries; 107 register struct varent *vent; 108 register int i; 109 struct winsize ws; 110 dev_t ttydev; 111 int all, ch, flag, fmt, lineno, pid, prtheader, uid, what, xflg; 112 int pscomp(); 113 char *nlistf, *memf, *swapf; 114 char *kludge_oldps_options(); 115 116 if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 117 ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 118 ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) || 119 ws.ws_col == 0) 120 termwidth = 79; 121 else 122 termwidth = ws.ws_col - 1; 123 124 if (argc > 1) 125 argv[1] = kludge_oldps_options(argv[1]); 126 127 fmt = 0; 128 all = xflg = 0; 129 pid = uid = -1; 130 ttydev = NODEV; 131 memf = nlistf = swapf = NULL; 132 while ((ch = getopt(argc, argv, 133 "aCghjLlM:mN:O:o:p:rSTt:uvW:wx")) != EOF) 134 switch((char)ch) { 135 case 'a': 136 all = 1; 137 break; 138 case 'C': 139 rawcpu = 1; 140 break; 141 case 'g': 142 break; /* no-op */ 143 case 'h': 144 prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 145 break; 146 case 'j': 147 parsefmt(jfmt); 148 fmt = 1; 149 jfmt[0] = '\0'; 150 break; 151 case 'L': 152 showkey(); 153 exit(0); 154 case 'l': 155 parsefmt(lfmt); 156 fmt = 1; 157 lfmt[0] = '\0'; 158 break; 159 case 'M': 160 memf = optarg; 161 break; 162 case 'm': 163 sortby = SORTMEM; 164 break; 165 case 'N': 166 nlistf = optarg; 167 break; 168 case 'O': 169 parsefmt(o1); 170 parsefmt(optarg); 171 parsefmt(o2); 172 o1[0] = o2[0] = '\0'; 173 fmt = 1; 174 break; 175 case 'o': 176 parsefmt(optarg); 177 fmt = 1; 178 break; 179 case 'p': 180 pid = atoi(optarg); 181 xflg = 1; 182 break; 183 case 'r': 184 sortby = SORTCPU; 185 break; 186 case 'S': 187 sumrusage = 1; 188 break; 189 case 'T': 190 if ((optarg = ttyname(STDIN_FILENO)) == NULL) 191 err("stdin: not a terminal"); 192 /* FALLTHROUGH */ 193 case 't': { 194 char *ttypath; 195 struct stat stbuf; 196 char pathbuf[MAXPATHLEN]; 197 198 if (strcmp(optarg, "co") == 0) 199 ttypath = _PATH_CONSOLE; 200 else if (*optarg != '/') 201 (void) sprintf(ttypath = pathbuf, "%s%s", 202 _PATH_TTY, optarg); 203 else 204 ttypath = optarg; 205 if (stat(ttypath, &stbuf) == -1) 206 err("%s: %s", ttypath, strerror(errno)); 207 if (!S_ISCHR(stbuf.st_mode)) 208 err("%s: not a terminal", ttypath); 209 ttydev = stbuf.st_rdev; 210 break; 211 } 212 case 'u': 213 parsefmt(ufmt); 214 sortby = SORTCPU; 215 fmt = 1; 216 ufmt[0] = '\0'; 217 break; 218 case 'v': 219 parsefmt(vfmt); 220 sortby = SORTMEM; 221 fmt = 1; 222 vfmt[0] = '\0'; 223 break; 224 case 'W': 225 swapf = optarg; 226 break; 227 case 'w': 228 if (termwidth < 131) 229 termwidth = 131; 230 else 231 termwidth = UNLIMITED; 232 break; 233 case 'x': 234 xflg = 1; 235 break; 236 case '?': 237 default: 238 usage(); 239 } 240 argc -= optind; 241 argv += optind; 242 243 #define BACKWARD_COMPATIBILITY 244 #ifdef BACKWARD_COMPATIBILITY 245 if (*argv) { 246 247 nlistf = *argv; 248 if (*++argv) { 249 memf = *argv; 250 if (*++argv) 251 swapf = *argv; 252 } 253 } 254 #endif 255 if (kvm_openfiles(nlistf, memf, swapf) == -1) 256 err("kvm_openfiles: %s", kvm_geterr()); 257 258 if (!fmt) 259 parsefmt(dfmt); 260 261 if (!all && ttydev == NODEV && pid == -1) /* XXX - should be cleaner */ 262 uid = getuid(); 263 264 /* 265 * scan requested variables, noting what structures are needed, 266 * and adjusting header widths as appropiate. 267 */ 268 scanvars(); 269 /* 270 * get proc list 271 */ 272 if (uid != -1) { 273 what = KINFO_PROC_UID; 274 flag = uid; 275 } else if (ttydev != NODEV) { 276 what = KINFO_PROC_TTY; 277 flag = ttydev; 278 } else if (pid != -1) { 279 what = KINFO_PROC_PID; 280 flag = pid; 281 } else 282 what = KINFO_PROC_ALL; 283 /* 284 * select procs 285 */ 286 if ((nentries = kvm_getprocs(what, flag)) == -1) 287 err("%s", kvm_geterr()); 288 kinfo = malloc(nentries * sizeof(KINFO)); 289 if (kinfo == NULL) 290 err("%s", strerror(errno)); 291 for (nentries = 0; p = kvm_nextproc(); ++nentries) { 292 kinfo[nentries].ki_p = p; 293 kinfo[nentries].ki_e = kvm_geteproc(p); 294 if (needuser) 295 saveuser(&kinfo[nentries]); 296 } 297 /* 298 * print header 299 */ 300 printheader(); 301 if (nentries == 0) 302 exit(0); 303 /* 304 * sort proc list 305 */ 306 qsort((void *)kinfo, nentries, sizeof(KINFO), pscomp); 307 /* 308 * for each proc, call each variable output function. 309 */ 310 for (i = lineno = 0; i < nentries; i++) { 311 if (xflg == 0 && (kinfo[i].ki_e->e_tdev == NODEV || 312 (kinfo[i].ki_p->p_flag & SCTTY ) == 0)) 313 continue; 314 for (vent = vhead; vent; vent = vent->next) { 315 (*vent->var->oproc)(&kinfo[i], vent->var, vent->next); 316 if (vent->next != NULL) 317 (void) putchar(' '); 318 } 319 (void) putchar('\n'); 320 if (prtheader && lineno++ == prtheader-4) { 321 (void) putchar('\n'); 322 printheader(); 323 lineno = 0; 324 } 325 } 326 exit(eval); 327 } 328 329 scanvars() 330 { 331 register struct varent *vent; 332 register VAR *v; 333 register int i; 334 335 for (vent = vhead; vent; vent = vent->next) { 336 v = vent->var; 337 i = strlen(v->header); 338 if (v->width < i) 339 v->width = i; 340 totwidth += v->width + 1; /* +1 for space */ 341 if (v->flag & USER) 342 needuser = 1; 343 if (v->flag & COMM) 344 needcomm = 1; 345 } 346 totwidth--; 347 } 348 349 350 /* XXX - redo */ 351 saveuser(ki) 352 KINFO *ki; 353 { 354 register struct usave *usp; 355 register struct user *up; 356 357 if ((usp = calloc(1, sizeof(struct usave))) == NULL) 358 err("%s", strerror(errno)); 359 up = kvm_getu(ki->ki_p); 360 /* 361 * save arguments if needed 362 */ 363 ki->ki_args = needcomm ? strdup(kvm_getargs(ki->ki_p, up)) : NULL; 364 if (up != NULL) { 365 ki->ki_u = usp; 366 /* 367 * save important fields 368 */ 369 #ifdef NEWVM 370 usp->u_start = up->u_stats.p_start; 371 usp->u_ru = up->u_stats.p_ru; 372 usp->u_cru = up->u_stats.p_cru; 373 #else 374 usp->u_procp = up->u_procp; 375 usp->u_start = up->u_start; 376 usp->u_ru = up->u_ru; 377 usp->u_cru = up->u_cru; 378 usp->u_acflag = up->u_acflag; 379 #endif 380 } else 381 free(usp); 382 } 383 384 pscomp(k1, k2) 385 KINFO *k1, *k2; 386 { 387 int i; 388 #ifdef NEWVM 389 #define VSIZE(k) ((k)->ki_e->e_vm.vm_dsize + (k)->ki_e->e_vm.vm_ssize + \ 390 (k)->ki_e->e_vm.vm_tsize) 391 #else 392 #define VSIZE(k) ((k)->ki_p->p_dsize + (k)->ki_p->p_ssize + (k)->ki_e->e_xsize) 393 #endif 394 395 if (sortby == SORTCPU) 396 return (getpcpu(k2) - getpcpu(k1)); 397 if (sortby == SORTMEM) 398 return (VSIZE(k2) - VSIZE(k1)); 399 i = k1->ki_e->e_tdev - k2->ki_e->e_tdev; 400 if (i == 0) 401 i = k1->ki_p->p_pid - k2->ki_p->p_pid; 402 return (i); 403 } 404 405 /* 406 * ICK (all for getopt), would rather hide the ugliness 407 * here than taint the main code. 408 * 409 * ps foo -> ps -foo 410 * ps 34 -> ps -p34 411 * 412 * The old convention that 't' with no trailing tty arg means the users 413 * tty, is only supported if argv[1] doesn't begin with a '-'. This same 414 * feature is available with the option 'T', which takes no argument. 415 */ 416 char * 417 kludge_oldps_options(s) 418 char *s; 419 { 420 size_t len; 421 char *newopts, *ns, *cp; 422 423 len = strlen(s); 424 if ((newopts = ns = malloc(len + 2)) == NULL) 425 err("%s", strerror(errno)); 426 /* 427 * options begin with '-' 428 */ 429 if (*s != '-') 430 *ns++ = '-'; /* add option flag */ 431 /* 432 * gaze to end of argv[1] 433 */ 434 cp = s + len - 1; 435 /* 436 * if last letter is a 't' flag with no argument (in the context 437 * of the oldps options -- option string NOT starting with a '-' -- 438 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 439 */ 440 if (*cp == 't' && *s != '-') 441 *cp = 'T'; 442 else { 443 /* 444 * otherwise check for trailing number, which *may* be a 445 * pid. 446 */ 447 while (cp >= s && isdigit(*cp)) 448 --cp; 449 } 450 cp++; 451 bcopy(s, ns, (size_t)(cp - s)); /* copy up to trailing number */ 452 ns += cp - s; 453 /* 454 * if there's a trailing number, and not a preceding 'p' (pid) or 455 * 't' (tty) flag, then assume it's a pid and insert a 'p' flag. 456 */ 457 if (isdigit(*cp) && (cp == s || cp[-1] != 't' && cp[-1] != 'p' && 458 (cp - 1 == s || cp[-2] != 't'))) 459 *ns++ = 'p'; 460 (void) strcpy(ns, cp); /* and append the number */ 461 462 return (newopts); 463 } 464 465 #if __STDC__ 466 #include <stdarg.h> 467 #else 468 #include <varargs.h> 469 #endif 470 471 void 472 #if __STDC__ 473 err(const char *fmt, ...) 474 #else 475 err(fmt, va_alist) 476 char *fmt; 477 va_dcl 478 #endif 479 { 480 va_list ap; 481 #if __STDC__ 482 va_start(ap, fmt); 483 #else 484 va_start(ap); 485 #endif 486 (void)fprintf(stderr, "ps: "); 487 (void)vfprintf(stderr, fmt, ap); 488 va_end(ap); 489 (void)fprintf(stderr, "\n"); 490 exit(1); 491 /* NOTREACHED */ 492 } 493 494 usage() 495 { 496 (void) fprintf(stderr, 497 "usage: ps [-aChjlmrSTuvwx] [-O|o fmt] [-p pid] [-t tty]\n\t [-M core] [-N system] [-W swap]\n ps [-L]\n"); 498 exit(1); 499 } 500
Indexes created Wed Sep 24 14:09:57 GMT 2025