1*79f972fbSderaadt /* $OpenBSD: ps.c,v 1.39 2004/09/14 23:45:35 deraadt 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 #ifndef lint 34df930be7Sderaadt static char copyright[] = 35df930be7Sderaadt "@(#) Copyright (c) 1990, 1993, 1994\n\ 36df930be7Sderaadt The Regents of the University of California. All rights reserved.\n"; 37df930be7Sderaadt #endif /* not lint */ 38df930be7Sderaadt 39df930be7Sderaadt #ifndef lint 40df930be7Sderaadt #if 0 41df930be7Sderaadt static char sccsid[] = "@(#)ps.c 8.4 (Berkeley) 4/2/94"; 42df930be7Sderaadt #else 43*79f972fbSderaadt static char rcsid[] = "$OpenBSD: ps.c,v 1.39 2004/09/14 23:45:35 deraadt Exp $"; 44df930be7Sderaadt #endif 45df930be7Sderaadt #endif /* not lint */ 46df930be7Sderaadt 47df930be7Sderaadt #include <sys/param.h> 48df930be7Sderaadt #include <sys/user.h> 49df930be7Sderaadt #include <sys/time.h> 50df930be7Sderaadt #include <sys/resource.h> 51df930be7Sderaadt #include <sys/proc.h> 52df930be7Sderaadt #include <sys/stat.h> 53df930be7Sderaadt #include <sys/ioctl.h> 54df930be7Sderaadt #include <sys/sysctl.h> 5552576792Salex #include <sys/types.h> 56df930be7Sderaadt 57df930be7Sderaadt #include <ctype.h> 58df930be7Sderaadt #include <err.h> 59df930be7Sderaadt #include <errno.h> 60df930be7Sderaadt #include <fcntl.h> 61df930be7Sderaadt #include <kvm.h> 62df930be7Sderaadt #include <nlist.h> 63df930be7Sderaadt #include <paths.h> 6452576792Salex #include <pwd.h> 65df930be7Sderaadt #include <stdio.h> 66df930be7Sderaadt #include <stdlib.h> 67df930be7Sderaadt #include <string.h> 68df930be7Sderaadt #include <unistd.h> 696763c4d8Sderaadt #include <limits.h> 70df930be7Sderaadt 71df930be7Sderaadt #include "ps.h" 72df930be7Sderaadt 739517852aSmpech extern char *__progname; 749517852aSmpech 75*79f972fbSderaadt struct varent *vhead; 76df930be7Sderaadt 77df930be7Sderaadt int eval; /* exit value */ 78df930be7Sderaadt int rawcpu; /* -C */ 79df930be7Sderaadt int sumrusage; /* -S */ 80df930be7Sderaadt int termwidth; /* width of screen (0 == infinity) */ 81df930be7Sderaadt int totwidth; /* calculated width of requested variables */ 82df930be7Sderaadt 83618c5e0dSmillert int needcomm, needenv, commandonly; 84df930be7Sderaadt 854527c594Smillert enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 86df930be7Sderaadt 87c72b5b24Smillert static char *kludge_oldps_options(char *); 88c72b5b24Smillert static int pscomp(const void *, const void *); 89c72b5b24Smillert static void scanvars(void); 90c72b5b24Smillert static void usage(void); 91df930be7Sderaadt 92df930be7Sderaadt char dfmt[] = "pid tt state time command"; 93df930be7Sderaadt char jfmt[] = "user pid ppid pgid sess jobc state tt time command"; 94df930be7Sderaadt char lfmt[] = "uid pid ppid cpu pri nice vsz rss wchan state tt time command"; 95df930be7Sderaadt char o1[] = "pid"; 96df930be7Sderaadt char o2[] = "tt state time command"; 97df930be7Sderaadt char ufmt[] = "user pid %cpu %mem vsz rss tt state start time command"; 98df930be7Sderaadt char vfmt[] = "pid state time sl re pagein vsz rss lim tsiz %cpu %mem command"; 99df930be7Sderaadt 100df930be7Sderaadt kvm_t *kd; 1015877eea9Sart int kvm_sysctl_only; 102df930be7Sderaadt 103df930be7Sderaadt int 10428416801Sderaadt main(int argc, char *argv[]) 105df930be7Sderaadt { 10690624e93Smillert struct kinfo_proc2 *kp, **kinfo; 107df930be7Sderaadt struct varent *vent; 108df930be7Sderaadt struct winsize ws; 10952576792Salex struct passwd *pwd; 110df930be7Sderaadt dev_t ttydev; 111df930be7Sderaadt pid_t pid; 112df930be7Sderaadt uid_t uid; 11390624e93Smillert int all, ch, flag, i, fmt, lineno, nentries, mib[6]; 114b9badb0aSotto int prtheader, wflag, kflag, what, Uflag, xflg; 1156763c4d8Sderaadt char *nlistf, *memf, *swapf, errbuf[_POSIX2_LINE_MAX]; 116e6592a11Sangelos size_t size; 117df930be7Sderaadt 118df930be7Sderaadt if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 119df930be7Sderaadt ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 120df930be7Sderaadt ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) || 121df930be7Sderaadt ws.ws_col == 0) 122df930be7Sderaadt termwidth = 79; 123df930be7Sderaadt else 124df930be7Sderaadt termwidth = ws.ws_col - 1; 125df930be7Sderaadt 126df930be7Sderaadt if (argc > 1) 127df930be7Sderaadt argv[1] = kludge_oldps_options(argv[1]); 128df930be7Sderaadt 129b9badb0aSotto all = fmt = prtheader = wflag = kflag = Uflag = xflg = 0; 130df930be7Sderaadt pid = -1; 131b9badb0aSotto uid = 0; 132df930be7Sderaadt ttydev = NODEV; 133df930be7Sderaadt memf = nlistf = swapf = NULL; 134df930be7Sderaadt while ((ch = getopt(argc, argv, 1353f2d366dSniklas "acCeghjkLlM:mN:O:o:p:rSTt:U:uvW:wx")) != -1) 136df930be7Sderaadt switch((char)ch) { 137df930be7Sderaadt case 'a': 138df930be7Sderaadt all = 1; 139df930be7Sderaadt break; 140df930be7Sderaadt case 'c': 141df930be7Sderaadt commandonly = 1; 142df930be7Sderaadt break; 143df930be7Sderaadt case 'e': /* XXX set ufmt */ 144df930be7Sderaadt needenv = 1; 145df930be7Sderaadt break; 146df930be7Sderaadt case 'C': 147df930be7Sderaadt rawcpu = 1; 148df930be7Sderaadt break; 149df930be7Sderaadt case 'g': 150df930be7Sderaadt break; /* no-op */ 151df930be7Sderaadt case 'h': 152df930be7Sderaadt prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 153df930be7Sderaadt break; 154df930be7Sderaadt case 'j': 155df930be7Sderaadt parsefmt(jfmt); 156df930be7Sderaadt fmt = 1; 157df930be7Sderaadt jfmt[0] = '\0'; 158df930be7Sderaadt break; 1593f2d366dSniklas case 'k': 1603f2d366dSniklas kflag++; 1613f2d366dSniklas break; 162df930be7Sderaadt case 'L': 163df930be7Sderaadt showkey(); 164df930be7Sderaadt exit(0); 165df930be7Sderaadt case 'l': 166df930be7Sderaadt parsefmt(lfmt); 167df930be7Sderaadt fmt = 1; 168df930be7Sderaadt lfmt[0] = '\0'; 169df930be7Sderaadt break; 170df930be7Sderaadt case 'M': 171df930be7Sderaadt memf = optarg; 172df930be7Sderaadt break; 173df930be7Sderaadt case 'm': 174df930be7Sderaadt sortby = SORTMEM; 175df930be7Sderaadt break; 176df930be7Sderaadt case 'N': 177df930be7Sderaadt nlistf = optarg; 178df930be7Sderaadt break; 179df930be7Sderaadt case 'O': 180df930be7Sderaadt parsefmt(o1); 181df930be7Sderaadt parsefmt(optarg); 182df930be7Sderaadt parsefmt(o2); 183df930be7Sderaadt o1[0] = o2[0] = '\0'; 184df930be7Sderaadt fmt = 1; 185df930be7Sderaadt break; 186df930be7Sderaadt case 'o': 187df930be7Sderaadt parsefmt(optarg); 188df930be7Sderaadt fmt = 1; 189df930be7Sderaadt break; 190df930be7Sderaadt case 'p': 191df930be7Sderaadt pid = atol(optarg); 192df930be7Sderaadt xflg = 1; 193df930be7Sderaadt break; 194df930be7Sderaadt case 'r': 195df930be7Sderaadt sortby = SORTCPU; 196df930be7Sderaadt break; 197df930be7Sderaadt case 'S': 198df930be7Sderaadt sumrusage = 1; 199df930be7Sderaadt break; 200df930be7Sderaadt case 'T': 201df930be7Sderaadt if ((optarg = ttyname(STDIN_FILENO)) == NULL) 202df930be7Sderaadt errx(1, "stdin: not a terminal"); 203df930be7Sderaadt /* FALLTHROUGH */ 204df930be7Sderaadt case 't': { 205df930be7Sderaadt struct stat sb; 206df930be7Sderaadt char *ttypath, pathbuf[MAXPATHLEN]; 207df930be7Sderaadt 208df930be7Sderaadt if (strcmp(optarg, "co") == 0) 209df930be7Sderaadt ttypath = _PATH_CONSOLE; 210df930be7Sderaadt else if (*optarg != '/') 211df930be7Sderaadt (void)snprintf(ttypath = pathbuf, 212df930be7Sderaadt sizeof(pathbuf), "%s%s", _PATH_TTY, optarg); 213df930be7Sderaadt else 214df930be7Sderaadt ttypath = optarg; 215df930be7Sderaadt if (stat(ttypath, &sb) == -1) 216df930be7Sderaadt err(1, "%s", ttypath); 217df930be7Sderaadt if (!S_ISCHR(sb.st_mode)) 218df930be7Sderaadt errx(1, "%s: not a terminal", ttypath); 219df930be7Sderaadt ttydev = sb.st_rdev; 220df930be7Sderaadt break; 221df930be7Sderaadt } 22252576792Salex case 'U': 22352576792Salex pwd = getpwnam(optarg); 22452576792Salex if (pwd == NULL) 22552576792Salex errx(1, "%s: no such user", optarg); 22652576792Salex uid = pwd->pw_uid; 22752576792Salex endpwent(); 228b9badb0aSotto Uflag = xflg = 1; 22952576792Salex break; 230df930be7Sderaadt case 'u': 231df930be7Sderaadt parsefmt(ufmt); 232df930be7Sderaadt sortby = SORTCPU; 233df930be7Sderaadt fmt = 1; 234df930be7Sderaadt ufmt[0] = '\0'; 235df930be7Sderaadt break; 236df930be7Sderaadt case 'v': 237df930be7Sderaadt parsefmt(vfmt); 238df930be7Sderaadt sortby = SORTMEM; 239df930be7Sderaadt fmt = 1; 240df930be7Sderaadt vfmt[0] = '\0'; 241df930be7Sderaadt break; 242df930be7Sderaadt case 'W': 243df930be7Sderaadt swapf = optarg; 244df930be7Sderaadt break; 245df930be7Sderaadt case 'w': 246df930be7Sderaadt if (wflag) 247df930be7Sderaadt termwidth = UNLIMITED; 248df930be7Sderaadt else if (termwidth < 131) 249df930be7Sderaadt termwidth = 131; 250df930be7Sderaadt wflag++; 251df930be7Sderaadt break; 252df930be7Sderaadt case 'x': 253df930be7Sderaadt xflg = 1; 254df930be7Sderaadt break; 255df930be7Sderaadt default: 256df930be7Sderaadt usage(); 257df930be7Sderaadt } 258df930be7Sderaadt argc -= optind; 259df930be7Sderaadt argv += optind; 260df930be7Sderaadt 261df930be7Sderaadt #define BACKWARD_COMPATIBILITY 262df930be7Sderaadt #ifdef BACKWARD_COMPATIBILITY 263df930be7Sderaadt if (*argv) { 264df930be7Sderaadt nlistf = *argv; 265df930be7Sderaadt if (*++argv) { 266df930be7Sderaadt memf = *argv; 267df930be7Sderaadt if (*++argv) 268df930be7Sderaadt swapf = *argv; 269df930be7Sderaadt } 270df930be7Sderaadt } 271df930be7Sderaadt #endif 272df930be7Sderaadt 2735877eea9Sart if (nlistf == NULL && memf == NULL && swapf == NULL) { 2745877eea9Sart kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf); 2755877eea9Sart kvm_sysctl_only = 1; 2765877eea9Sart } else { 277df930be7Sderaadt kd = kvm_openfiles(nlistf, memf, swapf, O_RDONLY, errbuf); 2785877eea9Sart } 279bb929088Smickey if (kd == NULL && (nlistf != NULL || memf != NULL || swapf != NULL)) 280df930be7Sderaadt errx(1, "%s", errbuf); 281df930be7Sderaadt 282df930be7Sderaadt if (!fmt) 283df930be7Sderaadt parsefmt(dfmt); 284df930be7Sderaadt 28552576792Salex /* XXX - should be cleaner */ 286ba86f864Sotto if (!all && ttydev == NODEV && pid == -1 && !Uflag) { 287df930be7Sderaadt uid = getuid(); 288ba86f864Sotto Uflag = 1; 289ba86f864Sotto } 290df930be7Sderaadt 291df930be7Sderaadt /* 292df930be7Sderaadt * scan requested variables, noting what structures are needed, 29305ea949fSmillert * and adjusting header widths as appropriate. 294df930be7Sderaadt */ 295df930be7Sderaadt scanvars(); 296df930be7Sderaadt /* 297df930be7Sderaadt * get proc list 298df930be7Sderaadt */ 299b9badb0aSotto if (Uflag) { 30090624e93Smillert what = KERN_PROC_UID; 30190624e93Smillert flag = uid; 302df930be7Sderaadt } else if (ttydev != NODEV) { 30390624e93Smillert what = KERN_PROC_TTY; 30490624e93Smillert flag = ttydev; 305df930be7Sderaadt } else if (pid != -1) { 30690624e93Smillert what = KERN_PROC_PID; 30790624e93Smillert flag = pid; 3083f2d366dSniklas } else if (kflag) { 30990624e93Smillert what = KERN_PROC_KTHREAD; 3103f2d366dSniklas flag = 0; 311df930be7Sderaadt } else { 31290624e93Smillert what = KERN_PROC_ALL; 313df930be7Sderaadt flag = 0; 314df930be7Sderaadt } 315df930be7Sderaadt /* 316df930be7Sderaadt * select procs 317df930be7Sderaadt */ 318e6592a11Sangelos if (kd != NULL) { 31990624e93Smillert kp = kvm_getproc2(kd, what, flag, sizeof(*kp), &nentries); 320e6592a11Sangelos if (kp == NULL) 32190624e93Smillert errx(1, "%s", kvm_geterr(kd)); 32290624e93Smillert } else { 32390624e93Smillert mib[0] = CTL_KERN; 32490624e93Smillert mib[1] = KERN_PROC2; 32590624e93Smillert mib[2] = what; 32690624e93Smillert mib[3] = flag; 32790624e93Smillert mib[4] = sizeof(struct kinfo_proc2); 32890624e93Smillert mib[5] = 0; 32990624e93Smillert retry: 33090624e93Smillert if (sysctl(mib, 6, NULL, &size, NULL, 0) < 0) 33190624e93Smillert err(1, "could not get kern.proc2 size"); 33290624e93Smillert size = 5 * size / 4; /* extra slop */ 33390624e93Smillert if ((kp = malloc(size)) == NULL) 334e6592a11Sangelos err(1, 33590624e93Smillert "failed to allocate memory for proc structures"); 33690624e93Smillert mib[5] = (int)(size / sizeof(struct kinfo_proc2)); 33790624e93Smillert if (sysctl(mib, 6, kp, &size, NULL, 0) < 0) { 33890624e93Smillert if (errno == ENOMEM) { 33990624e93Smillert free(kp); 34090624e93Smillert goto retry; 341e6592a11Sangelos } 34290624e93Smillert err(1, "could not read kern.proc2"); 34390624e93Smillert } 34490624e93Smillert nentries = (int)(size / sizeof(struct kinfo_proc2)); 345df930be7Sderaadt } 346df930be7Sderaadt /* 347df930be7Sderaadt * print header 348df930be7Sderaadt */ 349df930be7Sderaadt printheader(); 350df930be7Sderaadt if (nentries == 0) 351a30d4cafSmichaels exit(1); 352df930be7Sderaadt /* 35390624e93Smillert * sort proc list, we convert from an array of structs to an array 35490624e93Smillert * of pointers to make the sort cheaper. 355df930be7Sderaadt */ 35690624e93Smillert if ((kinfo = malloc(sizeof(*kinfo) * nentries)) == NULL) 35790624e93Smillert err(1, "failed to allocate memory for proc pointers"); 35890624e93Smillert for (i = 0; i < nentries; i++) 35990624e93Smillert kinfo[i] = &kp[i]; 36090624e93Smillert qsort(kinfo, nentries, sizeof(*kinfo), pscomp); 361df930be7Sderaadt /* 362df930be7Sderaadt * for each proc, call each variable output function. 363df930be7Sderaadt */ 364df930be7Sderaadt for (i = lineno = 0; i < nentries; i++) { 365*79f972fbSderaadt if (xflg == 0 && ((int)kinfo[i]->p_tdev == NODEV || 36690624e93Smillert (kinfo[i]->p_flag & P_CONTROLT ) == 0)) 367df930be7Sderaadt continue; 368df930be7Sderaadt for (vent = vhead; vent; vent = vent->next) { 36990624e93Smillert (vent->var->oproc)(kinfo[i], vent); 370df930be7Sderaadt if (vent->next != NULL) 371df930be7Sderaadt (void)putchar(' '); 372df930be7Sderaadt } 373df930be7Sderaadt (void)putchar('\n'); 374df930be7Sderaadt if (prtheader && lineno++ == prtheader - 4) { 375df930be7Sderaadt (void)putchar('\n'); 376df930be7Sderaadt printheader(); 377df930be7Sderaadt lineno = 0; 378df930be7Sderaadt } 379df930be7Sderaadt } 380df930be7Sderaadt exit(eval); 381df930be7Sderaadt } 382df930be7Sderaadt 383df930be7Sderaadt static void 38428416801Sderaadt scanvars(void) 385df930be7Sderaadt { 386df930be7Sderaadt struct varent *vent; 387df930be7Sderaadt VAR *v; 388df930be7Sderaadt int i; 389df930be7Sderaadt 390df930be7Sderaadt for (vent = vhead; vent; vent = vent->next) { 391df930be7Sderaadt v = vent->var; 392df930be7Sderaadt i = strlen(v->header); 393df930be7Sderaadt if (v->width < i) 394df930be7Sderaadt v->width = i; 395df930be7Sderaadt totwidth += v->width + 1; /* +1 for space */ 396df930be7Sderaadt if (v->flag & COMM) 397df930be7Sderaadt needcomm = 1; 398df930be7Sderaadt } 399df930be7Sderaadt totwidth--; 400df930be7Sderaadt } 401df930be7Sderaadt 402df930be7Sderaadt static int 40390624e93Smillert pscomp(const void *v1, const void *v2) 404df930be7Sderaadt { 40590624e93Smillert const struct kinfo_proc2 *kp1 = *(const struct kinfo_proc2 **)v1; 40690624e93Smillert const struct kinfo_proc2 *kp2 = *(const struct kinfo_proc2 **)v2; 407df930be7Sderaadt int i; 40890624e93Smillert #define VSIZE(k) ((k)->p_vm_dsize + (k)->p_vm_ssize + (k)->p_vm_tsize) 409df930be7Sderaadt 41090624e93Smillert if (sortby == SORTCPU && (i = getpcpu(kp2) - getpcpu(kp1)) != 0) 41190624e93Smillert return (i); 41290624e93Smillert if (sortby == SORTMEM && (i = VSIZE(kp2) - VSIZE(kp1)) != 0) 41390624e93Smillert return (i); 41490624e93Smillert if ((i = kp1->p_tdev - kp2->p_tdev) == 0 && 41590624e93Smillert (i = kp1->p_ustart_sec - kp2->p_ustart_sec) == 0) 41690624e93Smillert i = kp1->p_ustart_usec - kp2->p_ustart_usec; 417fffbb510Smillert return (i); 418fffbb510Smillert } 419df930be7Sderaadt 420df930be7Sderaadt /* 421df930be7Sderaadt * ICK (all for getopt), would rather hide the ugliness 422df930be7Sderaadt * here than taint the main code. 423df930be7Sderaadt * 424df930be7Sderaadt * ps foo -> ps -foo 425df930be7Sderaadt * ps 34 -> ps -p34 426df930be7Sderaadt * 427df930be7Sderaadt * The old convention that 't' with no trailing tty arg means the users 428df930be7Sderaadt * tty, is only supported if argv[1] doesn't begin with a '-'. This same 429df930be7Sderaadt * feature is available with the option 'T', which takes no argument. 430df930be7Sderaadt */ 431df930be7Sderaadt static char * 43228416801Sderaadt kludge_oldps_options(char *s) 433df930be7Sderaadt { 434df930be7Sderaadt size_t len; 435df930be7Sderaadt char *newopts, *ns, *cp; 436df930be7Sderaadt 437df930be7Sderaadt len = strlen(s); 438263704f2Sderaadt if ((newopts = ns = malloc(2 + len + 1)) == NULL) 439df930be7Sderaadt err(1, NULL); 440df930be7Sderaadt /* 441df930be7Sderaadt * options begin with '-' 442df930be7Sderaadt */ 443df930be7Sderaadt if (*s != '-') 444df930be7Sderaadt *ns++ = '-'; /* add option flag */ 445263704f2Sderaadt 446df930be7Sderaadt /* 447df930be7Sderaadt * gaze to end of argv[1] 448df930be7Sderaadt */ 449df930be7Sderaadt cp = s + len - 1; 450df930be7Sderaadt /* 451df930be7Sderaadt * if last letter is a 't' flag with no argument (in the context 452df930be7Sderaadt * of the oldps options -- option string NOT starting with a '-' -- 453df930be7Sderaadt * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 454df930be7Sderaadt */ 455df930be7Sderaadt if (*cp == 't' && *s != '-') 456df930be7Sderaadt *cp = 'T'; 457df930be7Sderaadt else { 458df930be7Sderaadt /* 459df930be7Sderaadt * otherwise check for trailing number, which *may* be a 460df930be7Sderaadt * pid. 461df930be7Sderaadt */ 462df930be7Sderaadt while (cp >= s && isdigit(*cp)) 463df930be7Sderaadt --cp; 464df930be7Sderaadt } 465df930be7Sderaadt cp++; 466df930be7Sderaadt memmove(ns, s, (size_t)(cp - s)); /* copy up to trailing number */ 467df930be7Sderaadt ns += cp - s; 468df930be7Sderaadt /* 469df930be7Sderaadt * if there's a trailing number, and not a preceding 'p' (pid) or 470df930be7Sderaadt * 't' (tty) flag, then assume it's a pid and insert a 'p' flag. 471df930be7Sderaadt */ 472764064c4Smickey if (isdigit(*cp) && (cp == s || (cp[-1] != 't' && cp[-1] != 'p' && 473764064c4Smickey (cp - 1 == s || cp[-2] != 't')))) 474df930be7Sderaadt *ns++ = 'p'; 475263704f2Sderaadt /* and append the number */ 476263704f2Sderaadt (void)strlcpy(ns, cp, newopts + len + 3 - ns); 477df930be7Sderaadt 478df930be7Sderaadt return (newopts); 479df930be7Sderaadt } 480df930be7Sderaadt 481df930be7Sderaadt static void 48228416801Sderaadt usage(void) 483df930be7Sderaadt { 484df930be7Sderaadt (void)fprintf(stderr, 485c22e921bSjmc "usage: %s [-][aCcehjklmrSTuvwx] [-M core] [-N system] [-O fmt] [-o fmt] [-p pid]\n", 4869517852aSmpech __progname); 4879517852aSmpech (void)fprintf(stderr, 488c22e921bSjmc "%-*s[-t tty] [-U username] [-W swap]\n", strlen(__progname) + 8, ""); 4899517852aSmpech (void)fprintf(stderr, " %s [-L]\n", __progname); 490df930be7Sderaadt exit(1); 491df930be7Sderaadt } 492