1*4120813fSderaadt /* $OpenBSD: ps.c,v 1.66 2015/10/23 03:26:24 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 33b9fc9a72Sderaadt #include <sys/param.h> /* MAXCOMLEN NODEV */ 34b9fc9a72Sderaadt #include <sys/types.h> 350adec678Sderaadt #include <sys/sysctl.h> 36df930be7Sderaadt #include <sys/time.h> 37df930be7Sderaadt #include <sys/resource.h> 38df930be7Sderaadt #include <sys/proc.h> 39df930be7Sderaadt #include <sys/stat.h> 40df930be7Sderaadt #include <sys/ioctl.h> 41df930be7Sderaadt 42df930be7Sderaadt #include <ctype.h> 43df930be7Sderaadt #include <err.h> 44df930be7Sderaadt #include <errno.h> 45df930be7Sderaadt #include <fcntl.h> 46df930be7Sderaadt #include <kvm.h> 47df930be7Sderaadt #include <nlist.h> 48df930be7Sderaadt #include <paths.h> 4952576792Salex #include <pwd.h> 50df930be7Sderaadt #include <stdio.h> 51df930be7Sderaadt #include <stdlib.h> 52df930be7Sderaadt #include <string.h> 53df930be7Sderaadt #include <unistd.h> 546763c4d8Sderaadt #include <limits.h> 55df930be7Sderaadt 56df930be7Sderaadt #include "ps.h" 57df930be7Sderaadt 589517852aSmpech extern char *__progname; 599517852aSmpech 6079f972fbSderaadt struct varent *vhead; 61df930be7Sderaadt 62df930be7Sderaadt int eval; /* exit value */ 63df930be7Sderaadt int sumrusage; /* -S */ 64df930be7Sderaadt int termwidth; /* width of screen (0 == infinity) */ 65df930be7Sderaadt int totwidth; /* calculated width of requested variables */ 66df930be7Sderaadt 676b176adcSmillert int needcomm, needenv, neednlist, commandonly; 68df930be7Sderaadt 694527c594Smillert enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 70df930be7Sderaadt 71c72b5b24Smillert static char *kludge_oldps_options(char *); 72c72b5b24Smillert static int pscomp(const void *, const void *); 73c72b5b24Smillert static void scanvars(void); 74c72b5b24Smillert static void usage(void); 75df930be7Sderaadt 76df930be7Sderaadt char dfmt[] = "pid tt state time command"; 77b9d9655cSjsing char tfmt[] = "pid tid tt state time command"; 78df930be7Sderaadt char jfmt[] = "user pid ppid pgid sess jobc state tt time command"; 79df930be7Sderaadt char lfmt[] = "uid pid ppid cpu pri nice vsz rss wchan state tt time command"; 80df930be7Sderaadt char o1[] = "pid"; 81df930be7Sderaadt char o2[] = "tt state time command"; 82df930be7Sderaadt char ufmt[] = "user pid %cpu %mem vsz rss tt state start time command"; 83df930be7Sderaadt char vfmt[] = "pid state time sl re pagein vsz rss lim tsiz %cpu %mem command"; 84df930be7Sderaadt 85df930be7Sderaadt kvm_t *kd; 865877eea9Sart int kvm_sysctl_only; 87df930be7Sderaadt 88df930be7Sderaadt int 8928416801Sderaadt main(int argc, char *argv[]) 90df930be7Sderaadt { 915027561dSguenther struct kinfo_proc *kp, **kinfo; 92df930be7Sderaadt struct varent *vent; 93df930be7Sderaadt struct winsize ws; 9452576792Salex struct passwd *pwd; 95df930be7Sderaadt dev_t ttydev; 96df930be7Sderaadt pid_t pid; 97df930be7Sderaadt uid_t uid; 981601eb99Sguenther int all, ch, flag, i, fmt, lineno, nentries; 99fc7b2cf1Sguenther int prtheader, showthreads, wflag, kflag, what, Uflag, xflg; 100c2e41e89Sguenther char *nlistf, *memf, *swapf, *cols, errbuf[_POSIX2_LINE_MAX]; 101df930be7Sderaadt 102c2e41e89Sguenther if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0') { 103c2e41e89Sguenther const char *errstr; 104c2e41e89Sguenther 105c2e41e89Sguenther termwidth = strtonum(cols, 1, INT_MAX, &errstr); 106c2e41e89Sguenther if (errstr != NULL) 107c2e41e89Sguenther warnx("COLUMNS: %s: %s", cols, errstr); 108c2e41e89Sguenther } 109c2e41e89Sguenther if (termwidth == 0) { 110496bd962Sderaadt if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 && 111496bd962Sderaadt ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 && 112496bd962Sderaadt ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) || 113df930be7Sderaadt ws.ws_col == 0) 114df930be7Sderaadt termwidth = 79; 115df930be7Sderaadt else 116df930be7Sderaadt termwidth = ws.ws_col - 1; 117c2e41e89Sguenther } 118df930be7Sderaadt 119df930be7Sderaadt if (argc > 1) 120df930be7Sderaadt argv[1] = kludge_oldps_options(argv[1]); 121df930be7Sderaadt 122fc7b2cf1Sguenther all = fmt = prtheader = showthreads = wflag = kflag = Uflag = xflg = 0; 123df930be7Sderaadt pid = -1; 124b9badb0aSotto uid = 0; 125df930be7Sderaadt ttydev = NODEV; 126df930be7Sderaadt memf = nlistf = swapf = NULL; 127df930be7Sderaadt while ((ch = getopt(argc, argv, 1289ea50c04Sokan "AaCcegHhjkLlM:mN:O:o:p:rSTt:U:uvW:wx")) != -1) 129c9c5a36dSkevlo switch (ch) { 1309ea50c04Sokan case 'A': 1319ea50c04Sokan all = 1; 1329ea50c04Sokan xflg = 1; 1339ea50c04Sokan break; 134df930be7Sderaadt case 'a': 135df930be7Sderaadt all = 1; 136df930be7Sderaadt break; 1379ea50c04Sokan case 'C': 1384bdadadaSbluhm break; /* no-op */ 139df930be7Sderaadt case 'c': 140df930be7Sderaadt commandonly = 1; 141df930be7Sderaadt break; 142df930be7Sderaadt case 'e': /* XXX set ufmt */ 143df930be7Sderaadt needenv = 1; 144df930be7Sderaadt break; 145df930be7Sderaadt case 'g': 146df930be7Sderaadt break; /* no-op */ 147fc7b2cf1Sguenther case 'H': 148fc7b2cf1Sguenther showthreads = 1; 149fc7b2cf1Sguenther break; 150df930be7Sderaadt case 'h': 151df930be7Sderaadt prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 152df930be7Sderaadt break; 153df930be7Sderaadt case 'j': 154df930be7Sderaadt parsefmt(jfmt); 155df930be7Sderaadt fmt = 1; 156df930be7Sderaadt jfmt[0] = '\0'; 157df930be7Sderaadt break; 1583f2d366dSniklas case 'k': 1593f36dab3Sokan kflag = 1; 1603f2d366dSniklas break; 161df930be7Sderaadt case 'L': 162df930be7Sderaadt showkey(); 163df930be7Sderaadt exit(0); 164df930be7Sderaadt case 'l': 165df930be7Sderaadt parsefmt(lfmt); 166df930be7Sderaadt fmt = 1; 167df930be7Sderaadt lfmt[0] = '\0'; 168df930be7Sderaadt break; 169df930be7Sderaadt case 'M': 170df930be7Sderaadt memf = optarg; 171df930be7Sderaadt break; 172df930be7Sderaadt case 'm': 173df930be7Sderaadt sortby = SORTMEM; 174df930be7Sderaadt break; 175df930be7Sderaadt case 'N': 176df930be7Sderaadt nlistf = optarg; 177df930be7Sderaadt break; 178df930be7Sderaadt case 'O': 179df930be7Sderaadt parsefmt(o1); 180df930be7Sderaadt parsefmt(optarg); 181df930be7Sderaadt parsefmt(o2); 182df930be7Sderaadt o1[0] = o2[0] = '\0'; 183df930be7Sderaadt fmt = 1; 184df930be7Sderaadt break; 185df930be7Sderaadt case 'o': 186df930be7Sderaadt parsefmt(optarg); 187df930be7Sderaadt fmt = 1; 188df930be7Sderaadt break; 189df930be7Sderaadt case 'p': 190df930be7Sderaadt pid = atol(optarg); 191df930be7Sderaadt xflg = 1; 192df930be7Sderaadt break; 193df930be7Sderaadt case 'r': 194df930be7Sderaadt sortby = SORTCPU; 195df930be7Sderaadt break; 196df930be7Sderaadt case 'S': 197df930be7Sderaadt sumrusage = 1; 198df930be7Sderaadt break; 199df930be7Sderaadt case 'T': 200df930be7Sderaadt if ((optarg = ttyname(STDIN_FILENO)) == NULL) 201df930be7Sderaadt errx(1, "stdin: not a terminal"); 202df930be7Sderaadt /* FALLTHROUGH */ 203df930be7Sderaadt case 't': { 204df930be7Sderaadt struct stat sb; 205b9fc9a72Sderaadt char *ttypath, pathbuf[PATH_MAX]; 206df930be7Sderaadt 207df930be7Sderaadt if (strcmp(optarg, "co") == 0) 208df930be7Sderaadt ttypath = _PATH_CONSOLE; 209df930be7Sderaadt else if (*optarg != '/') 210df930be7Sderaadt (void)snprintf(ttypath = pathbuf, 211df930be7Sderaadt sizeof(pathbuf), "%s%s", _PATH_TTY, optarg); 212df930be7Sderaadt else 213df930be7Sderaadt ttypath = optarg; 214df930be7Sderaadt if (stat(ttypath, &sb) == -1) 215df930be7Sderaadt err(1, "%s", ttypath); 216df930be7Sderaadt if (!S_ISCHR(sb.st_mode)) 217df930be7Sderaadt errx(1, "%s: not a terminal", ttypath); 218df930be7Sderaadt ttydev = sb.st_rdev; 219df930be7Sderaadt break; 220df930be7Sderaadt } 22152576792Salex case 'U': 22252576792Salex pwd = getpwnam(optarg); 22352576792Salex if (pwd == NULL) 22452576792Salex errx(1, "%s: no such user", optarg); 22552576792Salex uid = pwd->pw_uid; 22652576792Salex endpwent(); 227b9badb0aSotto Uflag = xflg = 1; 22852576792Salex break; 229df930be7Sderaadt case 'u': 230df930be7Sderaadt parsefmt(ufmt); 231df930be7Sderaadt sortby = SORTCPU; 232df930be7Sderaadt fmt = 1; 233df930be7Sderaadt ufmt[0] = '\0'; 234df930be7Sderaadt break; 235df930be7Sderaadt case 'v': 236df930be7Sderaadt parsefmt(vfmt); 237df930be7Sderaadt sortby = SORTMEM; 238df930be7Sderaadt fmt = 1; 239df930be7Sderaadt vfmt[0] = '\0'; 240df930be7Sderaadt break; 241df930be7Sderaadt case 'W': 242df930be7Sderaadt swapf = optarg; 243df930be7Sderaadt break; 244df930be7Sderaadt case 'w': 245df930be7Sderaadt if (wflag) 246df930be7Sderaadt termwidth = UNLIMITED; 247df930be7Sderaadt else if (termwidth < 131) 248df930be7Sderaadt termwidth = 131; 2493f36dab3Sokan wflag = 1; 250df930be7Sderaadt break; 251df930be7Sderaadt case 'x': 252df930be7Sderaadt xflg = 1; 253df930be7Sderaadt break; 254df930be7Sderaadt default: 255df930be7Sderaadt usage(); 256df930be7Sderaadt } 257df930be7Sderaadt argc -= optind; 258df930be7Sderaadt argv += optind; 259df930be7Sderaadt 260df930be7Sderaadt #define BACKWARD_COMPATIBILITY 261df930be7Sderaadt #ifdef BACKWARD_COMPATIBILITY 262df930be7Sderaadt if (*argv) { 263df930be7Sderaadt nlistf = *argv; 264df930be7Sderaadt if (*++argv) { 265df930be7Sderaadt memf = *argv; 266df930be7Sderaadt if (*++argv) 267df930be7Sderaadt swapf = *argv; 268df930be7Sderaadt } 269df930be7Sderaadt } 270df930be7Sderaadt #endif 271df930be7Sderaadt 2725877eea9Sart if (nlistf == NULL && memf == NULL && swapf == NULL) { 2735877eea9Sart kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf); 2745877eea9Sart kvm_sysctl_only = 1; 2755877eea9Sart } else { 276df930be7Sderaadt kd = kvm_openfiles(nlistf, memf, swapf, O_RDONLY, errbuf); 2775877eea9Sart } 278f2812ea1Sguenther if (kd == NULL) 279df930be7Sderaadt errx(1, "%s", errbuf); 280df930be7Sderaadt 281*4120813fSderaadt if (pledge("stdio rpath ps", NULL) == -1) 282*4120813fSderaadt err(1, "abort pledge"); 283*4120813fSderaadt 284b9d9655cSjsing if (!fmt) { 285b9d9655cSjsing if (showthreads) 286b9d9655cSjsing parsefmt(tfmt); 287b9d9655cSjsing else 288df930be7Sderaadt parsefmt(dfmt); 289b9d9655cSjsing } 290df930be7Sderaadt 29152576792Salex /* XXX - should be cleaner */ 292ba86f864Sotto if (!all && ttydev == NODEV && pid == -1 && !Uflag) { 293df930be7Sderaadt uid = getuid(); 294ba86f864Sotto Uflag = 1; 295ba86f864Sotto } 296df930be7Sderaadt 297df930be7Sderaadt /* 298df930be7Sderaadt * scan requested variables, noting what structures are needed, 29905ea949fSmillert * and adjusting header widths as appropriate. 300df930be7Sderaadt */ 301df930be7Sderaadt scanvars(); 3026b176adcSmillert 3036b176adcSmillert if (neednlist && !nlistread) 3046b176adcSmillert (void) donlist(); 3056b176adcSmillert 306df930be7Sderaadt /* 307df930be7Sderaadt * get proc list 308df930be7Sderaadt */ 309b9badb0aSotto if (Uflag) { 31090624e93Smillert what = KERN_PROC_UID; 31190624e93Smillert flag = uid; 312df930be7Sderaadt } else if (ttydev != NODEV) { 31390624e93Smillert what = KERN_PROC_TTY; 31490624e93Smillert flag = ttydev; 315df930be7Sderaadt } else if (pid != -1) { 31690624e93Smillert what = KERN_PROC_PID; 31790624e93Smillert flag = pid; 3183f2d366dSniklas } else if (kflag) { 31990624e93Smillert what = KERN_PROC_KTHREAD; 3203f2d366dSniklas flag = 0; 321df930be7Sderaadt } else { 32290624e93Smillert what = KERN_PROC_ALL; 323df930be7Sderaadt flag = 0; 324df930be7Sderaadt } 3256171375dSpirofti if (showthreads) 3266171375dSpirofti what |= KERN_PROC_SHOW_THREADS; 327970ac3e4Sderaadt 328df930be7Sderaadt /* 329df930be7Sderaadt * select procs 330df930be7Sderaadt */ 3315027561dSguenther kp = kvm_getprocs(kd, what, flag, sizeof(*kp), &nentries); 332e6592a11Sangelos if (kp == NULL) 33390624e93Smillert errx(1, "%s", kvm_geterr(kd)); 334f2812ea1Sguenther 335df930be7Sderaadt /* 336df930be7Sderaadt * print header 337df930be7Sderaadt */ 338df930be7Sderaadt printheader(); 339df930be7Sderaadt if (nentries == 0) 340a30d4cafSmichaels exit(1); 341df930be7Sderaadt /* 34290624e93Smillert * sort proc list, we convert from an array of structs to an array 34390624e93Smillert * of pointers to make the sort cheaper. 344df930be7Sderaadt */ 34571633524Stedu if ((kinfo = reallocarray(NULL, nentries, sizeof(*kinfo))) == NULL) 34690624e93Smillert err(1, "failed to allocate memory for proc pointers"); 34790624e93Smillert for (i = 0; i < nentries; i++) 34890624e93Smillert kinfo[i] = &kp[i]; 34990624e93Smillert qsort(kinfo, nentries, sizeof(*kinfo), pscomp); 350df930be7Sderaadt /* 351df930be7Sderaadt * for each proc, call each variable output function. 352df930be7Sderaadt */ 353df930be7Sderaadt for (i = lineno = 0; i < nentries; i++) { 354fc7b2cf1Sguenther if (showthreads == 0 && (kinfo[i]->p_flag & P_THREAD) != 0) 355fc7b2cf1Sguenther continue; 35679f972fbSderaadt if (xflg == 0 && ((int)kinfo[i]->p_tdev == NODEV || 357447f61ceSguenther (kinfo[i]->p_psflags & PS_CONTROLT ) == 0)) 358df930be7Sderaadt continue; 359243c13beSpirofti if (showthreads && kinfo[i]->p_tid == -1) 360243c13beSpirofti continue; 361df930be7Sderaadt for (vent = vhead; vent; vent = vent->next) { 36290624e93Smillert (vent->var->oproc)(kinfo[i], vent); 363df930be7Sderaadt if (vent->next != NULL) 364df930be7Sderaadt (void)putchar(' '); 365df930be7Sderaadt } 366df930be7Sderaadt (void)putchar('\n'); 367df930be7Sderaadt if (prtheader && lineno++ == prtheader - 4) { 368df930be7Sderaadt (void)putchar('\n'); 369df930be7Sderaadt printheader(); 370df930be7Sderaadt lineno = 0; 371df930be7Sderaadt } 372df930be7Sderaadt } 373df930be7Sderaadt exit(eval); 374df930be7Sderaadt } 375df930be7Sderaadt 376df930be7Sderaadt static void 37728416801Sderaadt scanvars(void) 378df930be7Sderaadt { 379df930be7Sderaadt struct varent *vent; 380df930be7Sderaadt VAR *v; 381df930be7Sderaadt int i; 382df930be7Sderaadt 383df930be7Sderaadt for (vent = vhead; vent; vent = vent->next) { 384df930be7Sderaadt v = vent->var; 385df930be7Sderaadt i = strlen(v->header); 386df930be7Sderaadt if (v->width < i) 387df930be7Sderaadt v->width = i; 388df930be7Sderaadt totwidth += v->width + 1; /* +1 for space */ 389df930be7Sderaadt if (v->flag & COMM) 390df930be7Sderaadt needcomm = 1; 3916b176adcSmillert if (v->flag & NLIST) 3926b176adcSmillert neednlist = 1; 393df930be7Sderaadt } 394df930be7Sderaadt totwidth--; 395df930be7Sderaadt } 396df930be7Sderaadt 397df930be7Sderaadt static int 39890624e93Smillert pscomp(const void *v1, const void *v2) 399df930be7Sderaadt { 4005027561dSguenther const struct kinfo_proc *kp1 = *(const struct kinfo_proc **)v1; 4015027561dSguenther const struct kinfo_proc *kp2 = *(const struct kinfo_proc **)v2; 402df930be7Sderaadt int i; 40390624e93Smillert #define VSIZE(k) ((k)->p_vm_dsize + (k)->p_vm_ssize + (k)->p_vm_tsize) 404df930be7Sderaadt 40590624e93Smillert if (sortby == SORTCPU && (i = getpcpu(kp2) - getpcpu(kp1)) != 0) 40690624e93Smillert return (i); 40790624e93Smillert if (sortby == SORTMEM && (i = VSIZE(kp2) - VSIZE(kp1)) != 0) 40890624e93Smillert return (i); 40990624e93Smillert if ((i = kp1->p_tdev - kp2->p_tdev) == 0 && 41090624e93Smillert (i = kp1->p_ustart_sec - kp2->p_ustart_sec) == 0) 41190624e93Smillert i = kp1->p_ustart_usec - kp2->p_ustart_usec; 412fffbb510Smillert return (i); 413fffbb510Smillert } 414df930be7Sderaadt 415df930be7Sderaadt /* 416df930be7Sderaadt * ICK (all for getopt), would rather hide the ugliness 417df930be7Sderaadt * here than taint the main code. 418df930be7Sderaadt * 419df930be7Sderaadt * ps foo -> ps -foo 420df930be7Sderaadt * ps 34 -> ps -p34 421df930be7Sderaadt * 422df930be7Sderaadt * The old convention that 't' with no trailing tty arg means the users 423df930be7Sderaadt * tty, is only supported if argv[1] doesn't begin with a '-'. This same 424df930be7Sderaadt * feature is available with the option 'T', which takes no argument. 425df930be7Sderaadt */ 426df930be7Sderaadt static char * 42728416801Sderaadt kludge_oldps_options(char *s) 428df930be7Sderaadt { 429df930be7Sderaadt size_t len; 430df930be7Sderaadt char *newopts, *ns, *cp; 431df930be7Sderaadt 432df930be7Sderaadt len = strlen(s); 433263704f2Sderaadt if ((newopts = ns = malloc(2 + len + 1)) == NULL) 434df930be7Sderaadt err(1, NULL); 435df930be7Sderaadt /* 436df930be7Sderaadt * options begin with '-' 437df930be7Sderaadt */ 438df930be7Sderaadt if (*s != '-') 439df930be7Sderaadt *ns++ = '-'; /* add option flag */ 440263704f2Sderaadt 441df930be7Sderaadt /* 442df930be7Sderaadt * gaze to end of argv[1] 443df930be7Sderaadt */ 444df930be7Sderaadt cp = s + len - 1; 445df930be7Sderaadt /* 446df930be7Sderaadt * if last letter is a 't' flag with no argument (in the context 447df930be7Sderaadt * of the oldps options -- option string NOT starting with a '-' -- 448df930be7Sderaadt * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 449df930be7Sderaadt */ 450df930be7Sderaadt if (*cp == 't' && *s != '-') 451df930be7Sderaadt *cp = 'T'; 452df930be7Sderaadt else { 453df930be7Sderaadt /* 454df930be7Sderaadt * otherwise check for trailing number, which *may* be a 455df930be7Sderaadt * pid. 456df930be7Sderaadt */ 457cd3e3e8cSderaadt while (cp >= s && isdigit((unsigned char)*cp)) 458df930be7Sderaadt --cp; 459df930be7Sderaadt } 460df930be7Sderaadt cp++; 461df930be7Sderaadt memmove(ns, s, (size_t)(cp - s)); /* copy up to trailing number */ 462df930be7Sderaadt ns += cp - s; 463df930be7Sderaadt /* 464df930be7Sderaadt * if there's a trailing number, and not a preceding 'p' (pid) or 465df930be7Sderaadt * 't' (tty) flag, then assume it's a pid and insert a 'p' flag. 466df930be7Sderaadt */ 467cd3e3e8cSderaadt if (isdigit((unsigned char)*cp) && 468cd3e3e8cSderaadt (cp == s || (cp[-1] != 't' && cp[-1] != 'p' && 469764064c4Smickey (cp - 1 == s || cp[-2] != 't')))) 470df930be7Sderaadt *ns++ = 'p'; 471263704f2Sderaadt /* and append the number */ 472263704f2Sderaadt (void)strlcpy(ns, cp, newopts + len + 3 - ns); 473df930be7Sderaadt 474df930be7Sderaadt return (newopts); 475df930be7Sderaadt } 476df930be7Sderaadt 477df930be7Sderaadt static void 47828416801Sderaadt usage(void) 479df930be7Sderaadt { 480df930be7Sderaadt (void)fprintf(stderr, 4814bdadadaSbluhm "usage: %s [-AaceHhjkLlmrSTuvwx] [-M core] [-N system] [-O fmt] [-o fmt] [-p pid]\n", 4829517852aSmpech __progname); 4839517852aSmpech (void)fprintf(stderr, 4845c0ffb2cSchl "%-*s[-t tty] [-U username] [-W swap]\n", (int)strlen(__progname) + 8, ""); 485df930be7Sderaadt exit(1); 486df930be7Sderaadt } 487