1*f2812ea1Sguenther /* $OpenBSD: ps.c,v 1.48 2010/07/02 15:43:15 guenther Exp $ */ 2df930be7Sderaadt /* $NetBSD: ps.c,v 1.15 1995/05/18 20:33:25 mycroft Exp $ */ 3df930be7Sderaadt 4df930be7Sderaadt /*- 5df930be7Sderaadt * Copyright (c) 1990, 1993, 1994 6df930be7Sderaadt * The Regents of the University of California. All rights reserved. 7df930be7Sderaadt * 8df930be7Sderaadt * Redistribution and use in source and binary forms, with or without 9df930be7Sderaadt * modification, are permitted provided that the following conditions 10df930be7Sderaadt * are met: 11df930be7Sderaadt * 1. Redistributions of source code must retain the above copyright 12df930be7Sderaadt * notice, this list of conditions and the following disclaimer. 13df930be7Sderaadt * 2. Redistributions in binary form must reproduce the above copyright 14df930be7Sderaadt * notice, this list of conditions and the following disclaimer in the 15df930be7Sderaadt * documentation and/or other materials provided with the distribution. 1629295d1cSmillert * 3. Neither the name of the University nor the names of its contributors 17df930be7Sderaadt * may be used to endorse or promote products derived from this software 18df930be7Sderaadt * without specific prior written permission. 19df930be7Sderaadt * 20df930be7Sderaadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21df930be7Sderaadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22df930be7Sderaadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23df930be7Sderaadt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24df930be7Sderaadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25df930be7Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26df930be7Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27df930be7Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28df930be7Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29df930be7Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30df930be7Sderaadt * SUCH DAMAGE. 31df930be7Sderaadt */ 32df930be7Sderaadt 33df930be7Sderaadt #include <sys/param.h> 34df930be7Sderaadt #include <sys/user.h> 35df930be7Sderaadt #include <sys/time.h> 36df930be7Sderaadt #include <sys/resource.h> 37df930be7Sderaadt #include <sys/proc.h> 38df930be7Sderaadt #include <sys/stat.h> 39df930be7Sderaadt #include <sys/ioctl.h> 40df930be7Sderaadt #include <sys/sysctl.h> 4152576792Salex #include <sys/types.h> 42df930be7Sderaadt 43df930be7Sderaadt #include <ctype.h> 44df930be7Sderaadt #include <err.h> 45df930be7Sderaadt #include <errno.h> 46df930be7Sderaadt #include <fcntl.h> 47df930be7Sderaadt #include <kvm.h> 48df930be7Sderaadt #include <nlist.h> 49df930be7Sderaadt #include <paths.h> 5052576792Salex #include <pwd.h> 51df930be7Sderaadt #include <stdio.h> 52df930be7Sderaadt #include <stdlib.h> 53df930be7Sderaadt #include <string.h> 54df930be7Sderaadt #include <unistd.h> 556763c4d8Sderaadt #include <limits.h> 56df930be7Sderaadt 57df930be7Sderaadt #include "ps.h" 58df930be7Sderaadt 599517852aSmpech extern char *__progname; 609517852aSmpech 6179f972fbSderaadt struct varent *vhead; 62df930be7Sderaadt 63df930be7Sderaadt int eval; /* exit value */ 64df930be7Sderaadt int rawcpu; /* -C */ 65df930be7Sderaadt int sumrusage; /* -S */ 66df930be7Sderaadt int termwidth; /* width of screen (0 == infinity) */ 67df930be7Sderaadt int totwidth; /* calculated width of requested variables */ 68df930be7Sderaadt 69970ac3e4Sderaadt int ncpu = 1; 70970ac3e4Sderaadt 716b176adcSmillert int needcomm, needenv, neednlist, commandonly; 72df930be7Sderaadt 734527c594Smillert enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 74df930be7Sderaadt 75c72b5b24Smillert static char *kludge_oldps_options(char *); 76c72b5b24Smillert static int pscomp(const void *, const void *); 77c72b5b24Smillert static void scanvars(void); 78c72b5b24Smillert static void usage(void); 79df930be7Sderaadt 80df930be7Sderaadt char dfmt[] = "pid tt state time command"; 81df930be7Sderaadt char jfmt[] = "user pid ppid pgid sess jobc state tt time command"; 82df930be7Sderaadt char lfmt[] = "uid pid ppid cpu pri nice vsz rss wchan state tt time command"; 83df930be7Sderaadt char o1[] = "pid"; 84df930be7Sderaadt char o2[] = "tt state time command"; 85df930be7Sderaadt char ufmt[] = "user pid %cpu %mem vsz rss tt state start time command"; 86df930be7Sderaadt char vfmt[] = "pid state time sl re pagein vsz rss lim tsiz %cpu %mem command"; 87df930be7Sderaadt 88df930be7Sderaadt kvm_t *kd; 895877eea9Sart int kvm_sysctl_only; 90df930be7Sderaadt 91df930be7Sderaadt int 9228416801Sderaadt main(int argc, char *argv[]) 93df930be7Sderaadt { 9490624e93Smillert struct kinfo_proc2 *kp, **kinfo; 95df930be7Sderaadt struct varent *vent; 96df930be7Sderaadt struct winsize ws; 9752576792Salex struct passwd *pwd; 98df930be7Sderaadt dev_t ttydev; 99df930be7Sderaadt pid_t pid; 100df930be7Sderaadt uid_t uid; 10190624e93Smillert int all, ch, flag, i, fmt, lineno, nentries, mib[6]; 102b9badb0aSotto int prtheader, wflag, kflag, what, Uflag, xflg; 1036763c4d8Sderaadt char *nlistf, *memf, *swapf, errbuf[_POSIX2_LINE_MAX]; 104e6592a11Sangelos size_t size; 105df930be7Sderaadt 106496bd962Sderaadt if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 && 107496bd962Sderaadt ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 && 108496bd962Sderaadt ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) || 109df930be7Sderaadt ws.ws_col == 0) 110df930be7Sderaadt termwidth = 79; 111df930be7Sderaadt else 112df930be7Sderaadt termwidth = ws.ws_col - 1; 113df930be7Sderaadt 114df930be7Sderaadt if (argc > 1) 115df930be7Sderaadt argv[1] = kludge_oldps_options(argv[1]); 116df930be7Sderaadt 117b9badb0aSotto all = fmt = prtheader = wflag = kflag = Uflag = xflg = 0; 118df930be7Sderaadt pid = -1; 119b9badb0aSotto uid = 0; 120df930be7Sderaadt ttydev = NODEV; 121df930be7Sderaadt memf = nlistf = swapf = NULL; 122df930be7Sderaadt while ((ch = getopt(argc, argv, 1233f2d366dSniklas "acCeghjkLlM:mN:O:o:p:rSTt:U:uvW:wx")) != -1) 124c9c5a36dSkevlo switch (ch) { 125df930be7Sderaadt case 'a': 126df930be7Sderaadt all = 1; 127df930be7Sderaadt break; 128df930be7Sderaadt case 'c': 129df930be7Sderaadt commandonly = 1; 130df930be7Sderaadt break; 131df930be7Sderaadt case 'e': /* XXX set ufmt */ 132df930be7Sderaadt needenv = 1; 133df930be7Sderaadt break; 134df930be7Sderaadt case 'C': 135df930be7Sderaadt rawcpu = 1; 136df930be7Sderaadt break; 137df930be7Sderaadt case 'g': 138df930be7Sderaadt break; /* no-op */ 139df930be7Sderaadt case 'h': 140df930be7Sderaadt prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 141df930be7Sderaadt break; 142df930be7Sderaadt case 'j': 143df930be7Sderaadt parsefmt(jfmt); 144df930be7Sderaadt fmt = 1; 145df930be7Sderaadt jfmt[0] = '\0'; 146df930be7Sderaadt break; 1473f2d366dSniklas case 'k': 1483f2d366dSniklas kflag++; 1493f2d366dSniklas break; 150df930be7Sderaadt case 'L': 151df930be7Sderaadt showkey(); 152df930be7Sderaadt exit(0); 153df930be7Sderaadt case 'l': 154df930be7Sderaadt parsefmt(lfmt); 155df930be7Sderaadt fmt = 1; 156df930be7Sderaadt lfmt[0] = '\0'; 157df930be7Sderaadt break; 158df930be7Sderaadt case 'M': 159df930be7Sderaadt memf = optarg; 160df930be7Sderaadt break; 161df930be7Sderaadt case 'm': 162df930be7Sderaadt sortby = SORTMEM; 163df930be7Sderaadt break; 164df930be7Sderaadt case 'N': 165df930be7Sderaadt nlistf = optarg; 166df930be7Sderaadt break; 167df930be7Sderaadt case 'O': 168df930be7Sderaadt parsefmt(o1); 169df930be7Sderaadt parsefmt(optarg); 170df930be7Sderaadt parsefmt(o2); 171df930be7Sderaadt o1[0] = o2[0] = '\0'; 172df930be7Sderaadt fmt = 1; 173df930be7Sderaadt break; 174df930be7Sderaadt case 'o': 175df930be7Sderaadt parsefmt(optarg); 176df930be7Sderaadt fmt = 1; 177df930be7Sderaadt break; 178df930be7Sderaadt case 'p': 179df930be7Sderaadt pid = atol(optarg); 180df930be7Sderaadt xflg = 1; 181df930be7Sderaadt break; 182df930be7Sderaadt case 'r': 183df930be7Sderaadt sortby = SORTCPU; 184df930be7Sderaadt break; 185df930be7Sderaadt case 'S': 186df930be7Sderaadt sumrusage = 1; 187df930be7Sderaadt break; 188df930be7Sderaadt case 'T': 189df930be7Sderaadt if ((optarg = ttyname(STDIN_FILENO)) == NULL) 190df930be7Sderaadt errx(1, "stdin: not a terminal"); 191df930be7Sderaadt /* FALLTHROUGH */ 192df930be7Sderaadt case 't': { 193df930be7Sderaadt struct stat sb; 194df930be7Sderaadt char *ttypath, pathbuf[MAXPATHLEN]; 195df930be7Sderaadt 196df930be7Sderaadt if (strcmp(optarg, "co") == 0) 197df930be7Sderaadt ttypath = _PATH_CONSOLE; 198df930be7Sderaadt else if (*optarg != '/') 199df930be7Sderaadt (void)snprintf(ttypath = pathbuf, 200df930be7Sderaadt sizeof(pathbuf), "%s%s", _PATH_TTY, optarg); 201df930be7Sderaadt else 202df930be7Sderaadt ttypath = optarg; 203df930be7Sderaadt if (stat(ttypath, &sb) == -1) 204df930be7Sderaadt err(1, "%s", ttypath); 205df930be7Sderaadt if (!S_ISCHR(sb.st_mode)) 206df930be7Sderaadt errx(1, "%s: not a terminal", ttypath); 207df930be7Sderaadt ttydev = sb.st_rdev; 208df930be7Sderaadt break; 209df930be7Sderaadt } 21052576792Salex case 'U': 21152576792Salex pwd = getpwnam(optarg); 21252576792Salex if (pwd == NULL) 21352576792Salex errx(1, "%s: no such user", optarg); 21452576792Salex uid = pwd->pw_uid; 21552576792Salex endpwent(); 216b9badb0aSotto Uflag = xflg = 1; 21752576792Salex break; 218df930be7Sderaadt case 'u': 219df930be7Sderaadt parsefmt(ufmt); 220df930be7Sderaadt sortby = SORTCPU; 221df930be7Sderaadt fmt = 1; 222df930be7Sderaadt ufmt[0] = '\0'; 223df930be7Sderaadt break; 224df930be7Sderaadt case 'v': 225df930be7Sderaadt parsefmt(vfmt); 226df930be7Sderaadt sortby = SORTMEM; 227df930be7Sderaadt fmt = 1; 228df930be7Sderaadt vfmt[0] = '\0'; 229df930be7Sderaadt break; 230df930be7Sderaadt case 'W': 231df930be7Sderaadt swapf = optarg; 232df930be7Sderaadt break; 233df930be7Sderaadt case 'w': 234df930be7Sderaadt if (wflag) 235df930be7Sderaadt termwidth = UNLIMITED; 236df930be7Sderaadt else if (termwidth < 131) 237df930be7Sderaadt termwidth = 131; 238df930be7Sderaadt wflag++; 239df930be7Sderaadt break; 240df930be7Sderaadt case 'x': 241df930be7Sderaadt xflg = 1; 242df930be7Sderaadt break; 243df930be7Sderaadt default: 244df930be7Sderaadt usage(); 245df930be7Sderaadt } 246df930be7Sderaadt argc -= optind; 247df930be7Sderaadt argv += optind; 248df930be7Sderaadt 249df930be7Sderaadt #define BACKWARD_COMPATIBILITY 250df930be7Sderaadt #ifdef BACKWARD_COMPATIBILITY 251df930be7Sderaadt if (*argv) { 252df930be7Sderaadt nlistf = *argv; 253df930be7Sderaadt if (*++argv) { 254df930be7Sderaadt memf = *argv; 255df930be7Sderaadt if (*++argv) 256df930be7Sderaadt swapf = *argv; 257df930be7Sderaadt } 258df930be7Sderaadt } 259df930be7Sderaadt #endif 260df930be7Sderaadt 2615877eea9Sart if (nlistf == NULL && memf == NULL && swapf == NULL) { 2625877eea9Sart kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf); 2635877eea9Sart kvm_sysctl_only = 1; 2645877eea9Sart } else { 265df930be7Sderaadt kd = kvm_openfiles(nlistf, memf, swapf, O_RDONLY, errbuf); 2665877eea9Sart } 267*f2812ea1Sguenther if (kd == NULL) 268df930be7Sderaadt errx(1, "%s", errbuf); 269df930be7Sderaadt 270df930be7Sderaadt if (!fmt) 271df930be7Sderaadt parsefmt(dfmt); 272df930be7Sderaadt 27352576792Salex /* XXX - should be cleaner */ 274ba86f864Sotto if (!all && ttydev == NODEV && pid == -1 && !Uflag) { 275df930be7Sderaadt uid = getuid(); 276ba86f864Sotto Uflag = 1; 277ba86f864Sotto } 278df930be7Sderaadt 279df930be7Sderaadt /* 280df930be7Sderaadt * scan requested variables, noting what structures are needed, 28105ea949fSmillert * and adjusting header widths as appropriate. 282df930be7Sderaadt */ 283df930be7Sderaadt scanvars(); 2846b176adcSmillert 2856b176adcSmillert if (neednlist && !nlistread) 2866b176adcSmillert (void) donlist(); 2876b176adcSmillert 288df930be7Sderaadt /* 289df930be7Sderaadt * get proc list 290df930be7Sderaadt */ 291b9badb0aSotto if (Uflag) { 29290624e93Smillert what = KERN_PROC_UID; 29390624e93Smillert flag = uid; 294df930be7Sderaadt } else if (ttydev != NODEV) { 29590624e93Smillert what = KERN_PROC_TTY; 29690624e93Smillert flag = ttydev; 297df930be7Sderaadt } else if (pid != -1) { 29890624e93Smillert what = KERN_PROC_PID; 29990624e93Smillert flag = pid; 3003f2d366dSniklas } else if (kflag) { 30190624e93Smillert what = KERN_PROC_KTHREAD; 3023f2d366dSniklas flag = 0; 303df930be7Sderaadt } else { 30490624e93Smillert what = KERN_PROC_ALL; 305df930be7Sderaadt flag = 0; 306df930be7Sderaadt } 307970ac3e4Sderaadt 308970ac3e4Sderaadt mib[0] = CTL_HW; 309970ac3e4Sderaadt mib[1] = HW_NCPU; 310970ac3e4Sderaadt size = sizeof(ncpu); 311970ac3e4Sderaadt (void) sysctl(mib, 2, &ncpu, &size, NULL, 0); 312970ac3e4Sderaadt 313df930be7Sderaadt /* 314df930be7Sderaadt * select procs 315df930be7Sderaadt */ 31690624e93Smillert kp = kvm_getproc2(kd, what, flag, sizeof(*kp), &nentries); 317e6592a11Sangelos if (kp == NULL) 31890624e93Smillert errx(1, "%s", kvm_geterr(kd)); 319*f2812ea1Sguenther 320df930be7Sderaadt /* 321df930be7Sderaadt * print header 322df930be7Sderaadt */ 323df930be7Sderaadt printheader(); 324df930be7Sderaadt if (nentries == 0) 325a30d4cafSmichaels exit(1); 326df930be7Sderaadt /* 32790624e93Smillert * sort proc list, we convert from an array of structs to an array 32890624e93Smillert * of pointers to make the sort cheaper. 329df930be7Sderaadt */ 330c72232dbSderaadt if ((kinfo = calloc(sizeof(*kinfo), nentries)) == NULL) 33190624e93Smillert err(1, "failed to allocate memory for proc pointers"); 33290624e93Smillert for (i = 0; i < nentries; i++) 33390624e93Smillert kinfo[i] = &kp[i]; 33490624e93Smillert qsort(kinfo, nentries, sizeof(*kinfo), pscomp); 335df930be7Sderaadt /* 336df930be7Sderaadt * for each proc, call each variable output function. 337df930be7Sderaadt */ 338df930be7Sderaadt for (i = lineno = 0; i < nentries; i++) { 33979f972fbSderaadt if (xflg == 0 && ((int)kinfo[i]->p_tdev == NODEV || 34090624e93Smillert (kinfo[i]->p_flag & P_CONTROLT ) == 0)) 341df930be7Sderaadt continue; 342df930be7Sderaadt for (vent = vhead; vent; vent = vent->next) { 34390624e93Smillert (vent->var->oproc)(kinfo[i], vent); 344df930be7Sderaadt if (vent->next != NULL) 345df930be7Sderaadt (void)putchar(' '); 346df930be7Sderaadt } 347df930be7Sderaadt (void)putchar('\n'); 348df930be7Sderaadt if (prtheader && lineno++ == prtheader - 4) { 349df930be7Sderaadt (void)putchar('\n'); 350df930be7Sderaadt printheader(); 351df930be7Sderaadt lineno = 0; 352df930be7Sderaadt } 353df930be7Sderaadt } 354df930be7Sderaadt exit(eval); 355df930be7Sderaadt } 356df930be7Sderaadt 357df930be7Sderaadt static void 35828416801Sderaadt scanvars(void) 359df930be7Sderaadt { 360df930be7Sderaadt struct varent *vent; 361df930be7Sderaadt VAR *v; 362df930be7Sderaadt int i; 363df930be7Sderaadt 364df930be7Sderaadt for (vent = vhead; vent; vent = vent->next) { 365df930be7Sderaadt v = vent->var; 366df930be7Sderaadt i = strlen(v->header); 367df930be7Sderaadt if (v->width < i) 368df930be7Sderaadt v->width = i; 369df930be7Sderaadt totwidth += v->width + 1; /* +1 for space */ 370df930be7Sderaadt if (v->flag & COMM) 371df930be7Sderaadt needcomm = 1; 3726b176adcSmillert if (v->flag & NLIST) 3736b176adcSmillert neednlist = 1; 374df930be7Sderaadt } 375df930be7Sderaadt totwidth--; 376df930be7Sderaadt } 377df930be7Sderaadt 378df930be7Sderaadt static int 37990624e93Smillert pscomp(const void *v1, const void *v2) 380df930be7Sderaadt { 38190624e93Smillert const struct kinfo_proc2 *kp1 = *(const struct kinfo_proc2 **)v1; 38290624e93Smillert const struct kinfo_proc2 *kp2 = *(const struct kinfo_proc2 **)v2; 383df930be7Sderaadt int i; 38490624e93Smillert #define VSIZE(k) ((k)->p_vm_dsize + (k)->p_vm_ssize + (k)->p_vm_tsize) 385df930be7Sderaadt 38690624e93Smillert if (sortby == SORTCPU && (i = getpcpu(kp2) - getpcpu(kp1)) != 0) 38790624e93Smillert return (i); 38890624e93Smillert if (sortby == SORTMEM && (i = VSIZE(kp2) - VSIZE(kp1)) != 0) 38990624e93Smillert return (i); 39090624e93Smillert if ((i = kp1->p_tdev - kp2->p_tdev) == 0 && 39190624e93Smillert (i = kp1->p_ustart_sec - kp2->p_ustart_sec) == 0) 39290624e93Smillert i = kp1->p_ustart_usec - kp2->p_ustart_usec; 393fffbb510Smillert return (i); 394fffbb510Smillert } 395df930be7Sderaadt 396df930be7Sderaadt /* 397df930be7Sderaadt * ICK (all for getopt), would rather hide the ugliness 398df930be7Sderaadt * here than taint the main code. 399df930be7Sderaadt * 400df930be7Sderaadt * ps foo -> ps -foo 401df930be7Sderaadt * ps 34 -> ps -p34 402df930be7Sderaadt * 403df930be7Sderaadt * The old convention that 't' with no trailing tty arg means the users 404df930be7Sderaadt * tty, is only supported if argv[1] doesn't begin with a '-'. This same 405df930be7Sderaadt * feature is available with the option 'T', which takes no argument. 406df930be7Sderaadt */ 407df930be7Sderaadt static char * 40828416801Sderaadt kludge_oldps_options(char *s) 409df930be7Sderaadt { 410df930be7Sderaadt size_t len; 411df930be7Sderaadt char *newopts, *ns, *cp; 412df930be7Sderaadt 413df930be7Sderaadt len = strlen(s); 414263704f2Sderaadt if ((newopts = ns = malloc(2 + len + 1)) == NULL) 415df930be7Sderaadt err(1, NULL); 416df930be7Sderaadt /* 417df930be7Sderaadt * options begin with '-' 418df930be7Sderaadt */ 419df930be7Sderaadt if (*s != '-') 420df930be7Sderaadt *ns++ = '-'; /* add option flag */ 421263704f2Sderaadt 422df930be7Sderaadt /* 423df930be7Sderaadt * gaze to end of argv[1] 424df930be7Sderaadt */ 425df930be7Sderaadt cp = s + len - 1; 426df930be7Sderaadt /* 427df930be7Sderaadt * if last letter is a 't' flag with no argument (in the context 428df930be7Sderaadt * of the oldps options -- option string NOT starting with a '-' -- 429df930be7Sderaadt * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 430df930be7Sderaadt */ 431df930be7Sderaadt if (*cp == 't' && *s != '-') 432df930be7Sderaadt *cp = 'T'; 433df930be7Sderaadt else { 434df930be7Sderaadt /* 435df930be7Sderaadt * otherwise check for trailing number, which *may* be a 436df930be7Sderaadt * pid. 437df930be7Sderaadt */ 438df930be7Sderaadt while (cp >= s && isdigit(*cp)) 439df930be7Sderaadt --cp; 440df930be7Sderaadt } 441df930be7Sderaadt cp++; 442df930be7Sderaadt memmove(ns, s, (size_t)(cp - s)); /* copy up to trailing number */ 443df930be7Sderaadt ns += cp - s; 444df930be7Sderaadt /* 445df930be7Sderaadt * if there's a trailing number, and not a preceding 'p' (pid) or 446df930be7Sderaadt * 't' (tty) flag, then assume it's a pid and insert a 'p' flag. 447df930be7Sderaadt */ 448764064c4Smickey if (isdigit(*cp) && (cp == s || (cp[-1] != 't' && cp[-1] != 'p' && 449764064c4Smickey (cp - 1 == s || cp[-2] != 't')))) 450df930be7Sderaadt *ns++ = 'p'; 451263704f2Sderaadt /* and append the number */ 452263704f2Sderaadt (void)strlcpy(ns, cp, newopts + len + 3 - ns); 453df930be7Sderaadt 454df930be7Sderaadt return (newopts); 455df930be7Sderaadt } 456df930be7Sderaadt 457df930be7Sderaadt static void 45828416801Sderaadt usage(void) 459df930be7Sderaadt { 460df930be7Sderaadt (void)fprintf(stderr, 4615caa60d8Sjmc "usage: %s [-aCcehjkLlmrSTuvwx] [-M core] [-N system] [-O fmt] [-o fmt] [-p pid]\n", 4629517852aSmpech __progname); 4639517852aSmpech (void)fprintf(stderr, 4645c0ffb2cSchl "%-*s[-t tty] [-U username] [-W swap]\n", (int)strlen(__progname) + 8, ""); 465df930be7Sderaadt exit(1); 466df930be7Sderaadt } 467