ps.c revision 203688
199357Smarkm/*- 299357Smarkm * Copyright (c) 1990, 1993, 1994 399357Smarkm * The Regents of the University of California. All rights reserved. 499357Smarkm * 599357Smarkm * Redistribution and use in source and binary forms, with or without 699357Smarkm * modification, are permitted provided that the following conditions 799357Smarkm * are met: 899357Smarkm * 1. Redistributions of source code must retain the above copyright 999357Smarkm * notice, this list of conditions and the following disclaimer. 1099357Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1199357Smarkm * notice, this list of conditions and the following disclaimer in the 1299357Smarkm * documentation and/or other materials provided with the distribution. 1399357Smarkm * 4. Neither the name of the University nor the names of its contributors 1499357Smarkm * may be used to endorse or promote products derived from this software 1599357Smarkm * without specific prior written permission. 1699357Smarkm * 1799357Smarkm * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1899357Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1999357Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2099357Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2199357Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2299357Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2399357Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2499357Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2599357Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2699357Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2799357Smarkm * SUCH DAMAGE. 2899357Smarkm * ------+---------+---------+-------- + --------+---------+---------+---------* 2999357Smarkm * Copyright (c) 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>. 3099357Smarkm * All rights reserved. 3199357Smarkm * 32270309Sse * Significant modifications made to bring `ps' options somewhat closer 3399357Smarkm * to the standard for `ps' as described in SingleUnixSpec-v3. 3499357Smarkm * ------+---------+---------+-------- + --------+---------+---------+---------* 3599357Smarkm */ 3699357Smarkm 37106053Swollman#ifndef lint 3899357Smarkmstatic const char copyright[] = 3999357Smarkm"@(#) Copyright (c) 1990, 1993, 1994\n\ 4099357Smarkm The Regents of the University of California. All rights reserved.\n"; 4199357Smarkm#endif /* not lint */ 4299357Smarkm 4399357Smarkm#if 0 4499357Smarkm#ifndef lint 4599357Smarkmstatic char sccsid[] = "@(#)ps.c 8.4 (Berkeley) 4/2/94"; 4699357Smarkm#endif /* not lint */ 4799357Smarkm#endif 4899357Smarkm 4999357Smarkm#include <sys/cdefs.h> 5099357Smarkm__FBSDID("$FreeBSD: head/bin/ps/ps.c 203688 2010-02-08 21:23:48Z brucec $"); 51270309Sse 52270309Sse#include <sys/param.h> 53270309Sse#include <sys/proc.h> 5499357Smarkm#include <sys/user.h> 5599357Smarkm#include <sys/stat.h> 5699357Smarkm#include <sys/ioctl.h> 5799357Smarkm#include <sys/sysctl.h> 5899357Smarkm#include <sys/mount.h> 5999357Smarkm 60293335Semaste#include <ctype.h> 6199357Smarkm#include <err.h> 6299357Smarkm#include <errno.h> 6399357Smarkm#include <fcntl.h> 6499357Smarkm#include <grp.h> 6599357Smarkm#include <kvm.h> 6699357Smarkm#include <limits.h> 6799357Smarkm#include <locale.h> 6899357Smarkm#include <paths.h> 6999357Smarkm#include <pwd.h> 7099357Smarkm#include <stdio.h> 7199357Smarkm#include <stdlib.h> 7299357Smarkm#include <string.h> 7399357Smarkm#include <unistd.h> 7499357Smarkm 7599357Smarkm#include "ps.h" 7699357Smarkm 7799357Smarkm#define _PATH_PTS "/dev/pts/" 7899357Smarkm 7999357Smarkm#define W_SEP " \t" /* "Whitespace" list separators */ 8099357Smarkm#define T_SEP "," /* "Terminate-element" list separators */ 8199357Smarkm 8299357Smarkm#ifdef LAZY_PS 8399357Smarkm#define DEF_UREAD 0 8499357Smarkm#define OPT_LAZY_f "f" 8599357Smarkm#else 8699357Smarkm#define DEF_UREAD 1 /* Always do the more-expensive read. */ 8799357Smarkm#define OPT_LAZY_f /* I.e., the `-f' option is not added. */ 8899357Smarkm#endif 8999357Smarkm 9099357Smarkm/* 9199357Smarkm * isdigit takes an `int', but expects values in the range of unsigned char. 9299357Smarkm * This wrapper ensures that values from a 'char' end up in the correct range. 9399357Smarkm */ 9499357Smarkm#define isdigitch(Anychar) isdigit((u_char)(Anychar)) 9599357Smarkm 9699357Smarkmint cflag; /* -c */ 9799357Smarkmint eval; /* Exit value */ 9899357Smarkmtime_t now; /* Current time(3) value */ 9999357Smarkmint rawcpu; /* -C */ 10099357Smarkmint sumrusage; /* -S */ 10199357Smarkmint termwidth; /* Width of the screen (0 == infinity). */ 10299357Smarkmint totwidth; /* Calculated-width of requested variables. */ 10399357Smarkmint showthreads; /* will threads be shown? */ 10499357Smarkm 10599357Smarkmstruct velisthead varlist = STAILQ_HEAD_INITIALIZER(varlist); 10699357Smarkm 10799357Smarkmstatic int forceuread = DEF_UREAD; /* Do extra work to get u-area. */ 10899357Smarkmstatic kvm_t *kd; 10999357Smarkmstatic KINFO *kinfo; 11099357Smarkmstatic int needcomm; /* -o "command" */ 11199357Smarkmstatic int needenv; /* -e */ 11299357Smarkmstatic int needuser; /* -o "user" */ 11399357Smarkmstatic int optfatal; /* Fatal error parsing some list-option. */ 11499357Smarkm 11599357Smarkmstatic enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; 11699357Smarkm 11799357Smarkmstruct listinfo; 11899357Smarkmtypedef int addelem_rtn(struct listinfo *_inf, const char *_elem); 11999357Smarkm 12099357Smarkmstruct listinfo { 12199357Smarkm int count; 12299357Smarkm int maxcount; 12399357Smarkm int elemsize; 12499357Smarkm addelem_rtn *addelem; 12599357Smarkm const char *lname; 12699357Smarkm union { 12799357Smarkm gid_t *gids; 12899357Smarkm pid_t *pids; 12999357Smarkm dev_t *ttys; 13099357Smarkm uid_t *uids; 13199357Smarkm void *ptr; 13299357Smarkm } l; 13399357Smarkm}; 13499357Smarkm 13599357Smarkmstatic int check_procfs(void); 13699357Smarkmstatic int addelem_gid(struct listinfo *, const char *); 13799357Smarkmstatic int addelem_pid(struct listinfo *, const char *); 13899357Smarkmstatic int addelem_tty(struct listinfo *, const char *); 13999357Smarkmstatic int addelem_uid(struct listinfo *, const char *); 14099357Smarkmstatic void add_list(struct listinfo *, const char *); 14199357Smarkmstatic void descendant_sort(KINFO *, int); 14299357Smarkmstatic void dynsizevars(KINFO *); 14399357Smarkmstatic void *expand_list(struct listinfo *); 14499357Smarkmstatic const char * 14599357Smarkm fmt(char **(*)(kvm_t *, const struct kinfo_proc *, int), 14699357Smarkm KINFO *, char *, int); 14799357Smarkmstatic void free_list(struct listinfo *); 14899357Smarkmstatic void init_list(struct listinfo *, addelem_rtn, int, const char *); 14999357Smarkmstatic char *kludge_oldps_options(const char *, char *, const char *); 15099357Smarkmstatic int pscomp(const void *, const void *); 151270309Ssestatic void saveuser(KINFO *); 152270309Ssestatic void scanvars(void); 153270309Ssestatic void sizevars(void); 154293335Semastestatic void usage(void); 155270309Sse 156270309Ssestatic char dfmt[] = "pid,tt,state,time,command"; 157270309Ssestatic char jfmt[] = "user,pid,ppid,pgid,sid,jobc,state,tt,time,command"; 158270309Ssestatic char lfmt[] = "uid,pid,ppid,cpu,pri,nice,vsz,rss,mwchan,state," 159270309Sse "tt,time,command"; 160270309Ssestatic char o1[] = "pid"; 161270309Ssestatic char o2[] = "tt,state,time,command"; 162270309Ssestatic char ufmt[] = "user,pid,%cpu,%mem,vsz,rss,tt,state,start,time,command"; 163293335Semastestatic char vfmt[] = "pid,state,time,sl,re,pagein,vsz,rss,lim,tsiz," 164270309Sse "%cpu,%mem,command"; 165270309Ssestatic char Zfmt[] = "label"; 166270309Sse 16799357Smarkm#define PS_ARGS "AaCcde" OPT_LAZY_f "G:gHhjLlM:mN:O:o:p:rSTt:U:uvwXxZ" 16899357Smarkm 16999357Smarkmint 17099357Smarkmmain(int argc, char *argv[]) 17199357Smarkm{ 17299357Smarkm struct listinfo gidlist, pgrplist, pidlist; 17399357Smarkm struct listinfo ruidlist, sesslist, ttylist, uidlist; 17499357Smarkm struct kinfo_proc *kp; 17599357Smarkm KINFO *next_KINFO; 17699357Smarkm struct varent *vent; 17799357Smarkm struct winsize ws; 17899357Smarkm const char *nlistf, *memf; 17999357Smarkm char *cols; 18099357Smarkm int all, ch, elem, flag, _fmt, i, lineno; 18199357Smarkm int descendancy, nentries, nkept, nselectors; 18299357Smarkm int prtheader, wflag, what, xkeep, xkeep_implied; 18399357Smarkm char errbuf[_POSIX2_LINE_MAX]; 18499357Smarkm 18599357Smarkm (void) setlocale(LC_ALL, ""); 18699357Smarkm time(&now); /* Used by routines in print.c. */ 18799357Smarkm 18899357Smarkm if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0') 18999357Smarkm termwidth = atoi(cols); 19099357Smarkm else if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 19199357Smarkm ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 && 19299357Smarkm ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) || 19399357Smarkm ws.ws_col == 0) 19499357Smarkm termwidth = 79; 19599357Smarkm else 19699357Smarkm termwidth = ws.ws_col - 1; 19799357Smarkm 19899357Smarkm /* 19999357Smarkm * Hide a number of option-processing kludges in a separate routine, 20099357Smarkm * to support some historical BSD behaviors, such as `ps axu'. 20199357Smarkm */ 20299357Smarkm if (argc > 1) 20399357Smarkm argv[1] = kludge_oldps_options(PS_ARGS, argv[1], argv[2]); 20499357Smarkm 20599357Smarkm all = descendancy = _fmt = nselectors = optfatal = 0; 20699357Smarkm prtheader = showthreads = wflag = xkeep_implied = 0; 20799357Smarkm xkeep = -1; /* Neither -x nor -X. */ 20899357Smarkm init_list(&gidlist, addelem_gid, sizeof(gid_t), "group"); 20999357Smarkm init_list(&pgrplist, addelem_pid, sizeof(pid_t), "process group"); 21099357Smarkm init_list(&pidlist, addelem_pid, sizeof(pid_t), "process id"); 21199357Smarkm init_list(&ruidlist, addelem_uid, sizeof(uid_t), "ruser"); 21299357Smarkm init_list(&sesslist, addelem_pid, sizeof(pid_t), "session id"); 21399357Smarkm init_list(&ttylist, addelem_tty, sizeof(dev_t), "tty"); 21499357Smarkm init_list(&uidlist, addelem_uid, sizeof(uid_t), "user"); 21599357Smarkm memf = _PATH_DEVNULL; 21699357Smarkm nlistf = NULL; 21799357Smarkm while ((ch = getopt(argc, argv, PS_ARGS)) != -1) 21899357Smarkm switch (ch) { 21999357Smarkm case 'A': 22099357Smarkm /* 22199357Smarkm * Exactly the same as `-ax'. This has been 22299357Smarkm * added for compatability with SUSv3, but for 22399357Smarkm * now it will not be described in the man page. 22499357Smarkm */ 22599357Smarkm nselectors++; 22699357Smarkm all = xkeep = 1; 22799357Smarkm break; 22899357Smarkm case 'a': 22999357Smarkm nselectors++; 23099357Smarkm all = 1; 23199357Smarkm break; 23299357Smarkm case 'C': 23399357Smarkm rawcpu = 1; 23499357Smarkm break; 23599357Smarkm case 'c': 23699357Smarkm cflag = 1; 23799357Smarkm break; 23899357Smarkm case 'd': 23999357Smarkm descendancy = 1; 24099357Smarkm break; 24199357Smarkm case 'e': /* XXX set ufmt */ 24299357Smarkm needenv = 1; 24399357Smarkm break; 24499357Smarkm#ifdef LAZY_PS 24599357Smarkm case 'f': 24699357Smarkm if (getuid() == 0 || getgid() == 0) 247222568Sjh forceuread = 1; 24899357Smarkm break; 24999357Smarkm#endif 25099357Smarkm case 'G': 25199357Smarkm add_list(&gidlist, optarg); 25299357Smarkm xkeep_implied = 1; 25399357Smarkm nselectors++; 25499357Smarkm break; 25599357Smarkm case 'g': 25699357Smarkm#if 0 25799357Smarkm /*- 25899357Smarkm * XXX - This SUSv3 behavior is still under debate 25999357Smarkm * since it conflicts with the (undocumented) 260293335Semaste * `-g' option. So we skip it for now. 26199357Smarkm */ 26299357Smarkm add_list(&pgrplist, optarg); 26399357Smarkm xkeep_implied = 1; 26499357Smarkm nselectors++; 26599357Smarkm break; 26699357Smarkm#else 26799357Smarkm /* The historical BSD-ish (from SunOS) behavior. */ 268293335Semaste break; /* no-op */ 269293335Semaste#endif 270293335Semaste case 'H': 271293335Semaste showthreads = KERN_PROC_INC_THREAD; 272293335Semaste break; 273293335Semaste case 'h': 274293335Semaste prtheader = ws.ws_row > 5 ? ws.ws_row : 22; 27599357Smarkm break; 27699357Smarkm case 'j': 27799357Smarkm parsefmt(jfmt, 0); 27899357Smarkm _fmt = 1; 27999357Smarkm jfmt[0] = '\0'; 28099357Smarkm break; 28199357Smarkm case 'L': 28299357Smarkm showkey(); 28399357Smarkm exit(0); 28499357Smarkm case 'l': 28599357Smarkm parsefmt(lfmt, 0); 28699357Smarkm _fmt = 1; 28799357Smarkm lfmt[0] = '\0'; 28899357Smarkm break; 28999357Smarkm case 'M': 29099357Smarkm memf = optarg; 29199357Smarkm break; 29299357Smarkm case 'm': 29399357Smarkm sortby = SORTMEM; 29499357Smarkm break; 29599357Smarkm case 'N': 29699357Smarkm nlistf = optarg; 29799357Smarkm break; 29899357Smarkm case 'O': 29999357Smarkm parsefmt(o1, 1); 30099357Smarkm parsefmt(optarg, 1); 30199357Smarkm parsefmt(o2, 1); 30299357Smarkm o1[0] = o2[0] = '\0'; 30399357Smarkm _fmt = 1; 30499357Smarkm break; 30599357Smarkm case 'o': 30699357Smarkm parsefmt(optarg, 1); 30799357Smarkm _fmt = 1; 30899357Smarkm break; 30999357Smarkm case 'p': 31099357Smarkm add_list(&pidlist, optarg); 31199357Smarkm /* 31299357Smarkm * Note: `-p' does not *set* xkeep, but any values 31399357Smarkm * from pidlist are checked before xkeep is. That 31499357Smarkm * way they are always matched, even if the user 31599357Smarkm * specifies `-X'. 316226439Snwhitehorn */ 31799357Smarkm nselectors++; 31899357Smarkm break; 31999357Smarkm#if 0 32099357Smarkm case 'R': 32199357Smarkm /*- 32299357Smarkm * XXX - This un-standard option is still under 32399357Smarkm * debate. This is what SUSv3 defines as 32499357Smarkm * the `-U' option, and while it would be 32599357Smarkm * nice to have, it could cause even more 32699357Smarkm * confusion to implement it as `-R'. 32799357Smarkm */ 32899357Smarkm add_list(&ruidlist, optarg); 32999357Smarkm xkeep_implied = 1; 33099357Smarkm nselectors++; 33199357Smarkm break; 33299357Smarkm#endif 33399357Smarkm case 'r': 33499357Smarkm sortby = SORTCPU; 33599357Smarkm break; 33699357Smarkm case 'S': 33799357Smarkm sumrusage = 1; 33899357Smarkm break; 33999357Smarkm#if 0 34099357Smarkm case 's': 34199357Smarkm /*- 34299357Smarkm * XXX - This non-standard option is still under 34399357Smarkm * debate. This *is* supported on Solaris, 34499357Smarkm * Linux, and IRIX, but conflicts with `-s' 34599357Smarkm * on NetBSD and maybe some older BSD's. 34699357Smarkm */ 34799357Smarkm add_list(&sesslist, optarg); 34899357Smarkm xkeep_implied = 1; 34999357Smarkm nselectors++; 35099357Smarkm break; 35199357Smarkm#endif 35299357Smarkm case 'T': 35399357Smarkm if ((optarg = ttyname(STDIN_FILENO)) == NULL) 35499357Smarkm errx(1, "stdin: not a terminal"); 35599357Smarkm /* FALLTHROUGH */ 35699357Smarkm case 't': 35799357Smarkm add_list(&ttylist, optarg); 35899357Smarkm xkeep_implied = 1; 35999357Smarkm nselectors++; 36099357Smarkm break; 36199357Smarkm case 'U': 36299357Smarkm /* This is what SUSv3 defines as the `-u' option. */ 363217359Snwhitehorn add_list(&uidlist, optarg); 36499357Smarkm xkeep_implied = 1; 36599357Smarkm nselectors++; 36699357Smarkm break; 36799357Smarkm case 'u': 36899357Smarkm parsefmt(ufmt, 0); 36999357Smarkm sortby = SORTCPU; 37099357Smarkm _fmt = 1; 37199357Smarkm ufmt[0] = '\0'; 37299357Smarkm break; 37399357Smarkm case 'v': 37499357Smarkm parsefmt(vfmt, 0); 37599357Smarkm sortby = SORTMEM; 37699357Smarkm _fmt = 1; 37799357Smarkm vfmt[0] = '\0'; 37899357Smarkm break; 37999357Smarkm case 'w': 38099357Smarkm if (wflag) 38199357Smarkm termwidth = UNLIMITED; 38299357Smarkm else if (termwidth < 131) 38399357Smarkm termwidth = 131; 38499357Smarkm wflag++; 38599357Smarkm break; 38699357Smarkm case 'X': 38799357Smarkm /* 38899357Smarkm * Note that `-X' and `-x' are not standard "selector" 38999357Smarkm * options. For most selector-options, we check *all* 39099357Smarkm * processes to see if any are matched by the given 39199357Smarkm * value(s). After we have a set of all the matched 39299357Smarkm * processes, then `-X' and `-x' govern whether we 39399357Smarkm * modify that *matched* set for processes which do 39499357Smarkm * not have a controlling terminal. `-X' causes 39599357Smarkm * those processes to be deleted from the matched 39699357Smarkm * set, while `-x' causes them to be kept. 39799357Smarkm */ 39899357Smarkm xkeep = 0; 39999357Smarkm break; 40099357Smarkm case 'x': 40199357Smarkm xkeep = 1; 40299357Smarkm break; 40399357Smarkm case 'Z': 40499357Smarkm parsefmt(Zfmt, 0); 40599357Smarkm Zfmt[0] = '\0'; 40699357Smarkm break; 407167260Skevlo case '?': 40899357Smarkm default: 40999357Smarkm usage(); 41099357Smarkm } 41199357Smarkm argc -= optind; 41299357Smarkm argv += optind; 41399357Smarkm 41499357Smarkm /* 41599357Smarkm * If the user specified ps -e then they want a copy of the process 41699357Smarkm * environment kvm_getenvv(3) attempts to open /proc/<pid>/mem. 41799357Smarkm * Check to make sure that procfs is mounted on /proc, otherwise 41899357Smarkm * print a warning informing the user that output will be incomplete. 41999357Smarkm */ 42099357Smarkm if (needenv == 1 && check_procfs() == 0) 42199357Smarkm warnx("Process environment requires procfs(5)"); 42299357Smarkm /* 42399357Smarkm * If there arguments after processing all the options, attempt 42499357Smarkm * to treat them as a list of process ids. 42599357Smarkm */ 42699357Smarkm while (*argv) { 42799357Smarkm if (!isdigitch(**argv)) 42899357Smarkm break; 42999357Smarkm add_list(&pidlist, *argv); 43099357Smarkm argv++; 43199357Smarkm } 43299357Smarkm if (*argv) { 43399357Smarkm fprintf(stderr, "%s: illegal argument: %s\n", 43499357Smarkm getprogname(), *argv); 43599357Smarkm usage(); 43699357Smarkm } 43799357Smarkm if (optfatal) 43899357Smarkm exit(1); /* Error messages already printed. */ 43999357Smarkm if (xkeep < 0) /* Neither -X nor -x was specified. */ 44099357Smarkm xkeep = xkeep_implied; 44199357Smarkm 44299357Smarkm kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 44399357Smarkm if (kd == 0) 44499357Smarkm errx(1, "%s", errbuf); 44599357Smarkm 44699357Smarkm if (!_fmt) 44799357Smarkm parsefmt(dfmt, 0); 44899357Smarkm 44999357Smarkm if (nselectors == 0) { 45099357Smarkm uidlist.l.ptr = malloc(sizeof(uid_t)); 45199357Smarkm if (uidlist.l.ptr == NULL) 45299357Smarkm errx(1, "malloc failed"); 45399357Smarkm nselectors = 1; 45499357Smarkm uidlist.count = uidlist.maxcount = 1; 45599357Smarkm *uidlist.l.uids = getuid(); 45699357Smarkm } 45799357Smarkm 45899357Smarkm /* 45999357Smarkm * scan requested variables, noting what structures are needed, 46099357Smarkm * and adjusting header widths as appropriate. 46199357Smarkm */ 46299357Smarkm scanvars(); 46399357Smarkm 46499357Smarkm /* 46599357Smarkm * Get process list. If the user requested just one selector- 46699357Smarkm * option, then kvm_getprocs can be asked to return just those 46799357Smarkm * processes. Otherwise, have it return all processes, and 46899357Smarkm * then this routine will search that full list and select the 46999357Smarkm * processes which match any of the user's selector-options. 47099357Smarkm */ 47199357Smarkm what = showthreads != 0 ? KERN_PROC_ALL : KERN_PROC_PROC; 47299357Smarkm flag = 0; 47399357Smarkm if (nselectors == 1) { 47499357Smarkm if (gidlist.count == 1) { 47599357Smarkm what = KERN_PROC_RGID | showthreads; 47699357Smarkm flag = *gidlist.l.gids; 47799357Smarkm nselectors = 0; 47899357Smarkm } else if (pgrplist.count == 1) { 47999357Smarkm what = KERN_PROC_PGRP | showthreads; 48099357Smarkm flag = *pgrplist.l.pids; 48199357Smarkm nselectors = 0; 48299357Smarkm } else if (pidlist.count == 1) { 48399357Smarkm what = KERN_PROC_PID | showthreads; 48499357Smarkm flag = *pidlist.l.pids; 48599357Smarkm nselectors = 0; 48699357Smarkm } else if (ruidlist.count == 1) { 48799357Smarkm what = KERN_PROC_RUID | showthreads; 48899357Smarkm flag = *ruidlist.l.uids; 48999357Smarkm nselectors = 0; 49099357Smarkm } else if (sesslist.count == 1) { 49199357Smarkm what = KERN_PROC_SESSION | showthreads; 49299357Smarkm flag = *sesslist.l.pids; 49399357Smarkm nselectors = 0; 49499357Smarkm } else if (ttylist.count == 1) { 49599357Smarkm what = KERN_PROC_TTY | showthreads; 49699357Smarkm flag = *ttylist.l.ttys; 49799357Smarkm nselectors = 0; 49899357Smarkm } else if (uidlist.count == 1) { 49999357Smarkm what = KERN_PROC_UID | showthreads; 50099357Smarkm flag = *uidlist.l.uids; 50199357Smarkm nselectors = 0; 50299357Smarkm } else if (all) { 50399357Smarkm /* No need for this routine to select processes. */ 50499357Smarkm nselectors = 0; 50599357Smarkm } 50699357Smarkm } 50799357Smarkm 50899357Smarkm /* 50999357Smarkm * select procs 51099357Smarkm */ 51199357Smarkm nentries = -1; 51299357Smarkm kp = kvm_getprocs(kd, what, flag, &nentries); 51399357Smarkm if ((kp == NULL && nentries > 0) || (kp != NULL && nentries < 0)) 51499357Smarkm errx(1, "%s", kvm_geterr(kd)); 51599357Smarkm nkept = 0; 51699357Smarkm if (nentries > 0) { 51799357Smarkm if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL) 51899357Smarkm errx(1, "malloc failed"); 51999357Smarkm for (i = nentries; --i >= 0; ++kp) { 52099357Smarkm /* 52199357Smarkm * If the user specified multiple selection-criteria, 52299357Smarkm * then keep any process matched by the inclusive OR 52399357Smarkm * of all the selection-criteria given. 52499357Smarkm */ 52599357Smarkm if (pidlist.count > 0) { 52699357Smarkm for (elem = 0; elem < pidlist.count; elem++) 52799357Smarkm if (kp->ki_pid == pidlist.l.pids[elem]) 52899357Smarkm goto keepit; 52999357Smarkm } 53099357Smarkm /* 53199357Smarkm * Note that we had to process pidlist before 53299357Smarkm * filtering out processes which do not have 53399357Smarkm * a controlling terminal. 53499357Smarkm */ 53599357Smarkm if (xkeep == 0) { 53699357Smarkm if ((kp->ki_tdev == NODEV || 53799357Smarkm (kp->ki_flag & P_CONTROLT) == 0)) 53899357Smarkm continue; 53999357Smarkm } 54099357Smarkm if (nselectors == 0) 54199357Smarkm goto keepit; 54299357Smarkm if (gidlist.count > 0) { 54399357Smarkm for (elem = 0; elem < gidlist.count; elem++) 54499357Smarkm if (kp->ki_rgid == gidlist.l.gids[elem]) 54599357Smarkm goto keepit; 54699357Smarkm } 54799357Smarkm if (pgrplist.count > 0) { 54899357Smarkm for (elem = 0; elem < pgrplist.count; elem++) 54999357Smarkm if (kp->ki_pgid == 55099357Smarkm pgrplist.l.pids[elem]) 55199357Smarkm goto keepit; 55299357Smarkm } 55399357Smarkm if (ruidlist.count > 0) { 55499357Smarkm for (elem = 0; elem < ruidlist.count; elem++) 55599357Smarkm if (kp->ki_ruid == 55699357Smarkm ruidlist.l.uids[elem]) 55799357Smarkm goto keepit; 55899357Smarkm } 55999357Smarkm if (sesslist.count > 0) { 56099357Smarkm for (elem = 0; elem < sesslist.count; elem++) 56199357Smarkm if (kp->ki_sid == sesslist.l.pids[elem]) 56299357Smarkm goto keepit; 56399357Smarkm } 56499357Smarkm if (ttylist.count > 0) { 56599357Smarkm for (elem = 0; elem < ttylist.count; elem++) 56699357Smarkm if (kp->ki_tdev == ttylist.l.ttys[elem]) 56799357Smarkm goto keepit; 56899357Smarkm } 56999357Smarkm if (uidlist.count > 0) { 57099357Smarkm for (elem = 0; elem < uidlist.count; elem++) 571228990Suqs if (kp->ki_uid == uidlist.l.uids[elem]) 57299357Smarkm goto keepit; 57399357Smarkm } 57499357Smarkm /* 57599357Smarkm * This process did not match any of the user's 57699357Smarkm * selector-options, so skip the process. 57799357Smarkm */ 57899357Smarkm continue; 57999357Smarkm 58099357Smarkm keepit: 581283165Semaste next_KINFO = &kinfo[nkept]; 58299357Smarkm next_KINFO->ki_p = kp; 58399357Smarkm next_KINFO->ki_d.level = 0; 58499357Smarkm next_KINFO->ki_d.prefix = NULL; 58599357Smarkm next_KINFO->ki_pcpu = getpcpu(next_KINFO); 58699357Smarkm if (sortby == SORTMEM) 58799357Smarkm next_KINFO->ki_memsize = kp->ki_tsize + 58899357Smarkm kp->ki_dsize + kp->ki_ssize; 58999357Smarkm if (needuser) 59099357Smarkm saveuser(next_KINFO); 59199357Smarkm dynsizevars(next_KINFO); 59299357Smarkm nkept++; 59399357Smarkm } 59499357Smarkm } 59599357Smarkm 596147685Sru sizevars(); 59799357Smarkm 59899357Smarkm /* 59999357Smarkm * print header 60099357Smarkm */ 60199357Smarkm printheader(); 60299357Smarkm if (nkept == 0) 60399357Smarkm exit(1); 604147685Sru 605147685Sru /* 60699357Smarkm * sort proc list 60799357Smarkm */ 60899357Smarkm qsort(kinfo, nkept, sizeof(KINFO), pscomp); 60999357Smarkm 61099357Smarkm /* 61199357Smarkm * We want things in descendant order 61299357Smarkm */ 61399357Smarkm if (descendancy) 61499357Smarkm descendant_sort(kinfo, nkept); 61599357Smarkm 61699357Smarkm /* 61799357Smarkm * For each process, call each variable output function. 61899357Smarkm */ 61999357Smarkm for (i = lineno = 0; i < nkept; i++) { 62099357Smarkm STAILQ_FOREACH(vent, &varlist, next_ve) { 62199357Smarkm (vent->var->oproc)(&kinfo[i], vent); 62299357Smarkm if (STAILQ_NEXT(vent, next_ve) != NULL) 62399357Smarkm (void)putchar(' '); 62499357Smarkm } 62599357Smarkm (void)putchar('\n'); 626283165Semaste if (prtheader && lineno++ == prtheader - 4) { 62799357Smarkm (void)putchar('\n'); 62899357Smarkm printheader(); 62999357Smarkm lineno = 0; 63099357Smarkm } 63199357Smarkm } 63299357Smarkm free_list(&gidlist); 63399357Smarkm free_list(&pidlist); 63499357Smarkm free_list(&pgrplist); 63599357Smarkm free_list(&ruidlist); 63699357Smarkm free_list(&sesslist); 63799357Smarkm free_list(&ttylist); 63899357Smarkm free_list(&uidlist); 63999357Smarkm for (i = 0; i < nkept; i++) 64099357Smarkm free(kinfo[i].ki_d.prefix); 64199357Smarkm free(kinfo); 64299357Smarkm 64399357Smarkm exit(eval); 64499357Smarkm} 64599357Smarkm 64699357Smarkmstatic int 64799357Smarkmaddelem_gid(struct listinfo *inf, const char *elem) 64899357Smarkm{ 64999357Smarkm struct group *grp; 65099357Smarkm const char *nameorID; 65199357Smarkm char *endp; 65299357Smarkm u_long bigtemp; 65399357Smarkm 65499357Smarkm if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 65599357Smarkm if (*elem == '\0') 65699357Smarkm warnx("Invalid (zero-length) %s name", inf->lname); 65799357Smarkm else 65899357Smarkm warnx("%s name too long: %s", inf->lname, elem); 65999357Smarkm optfatal = 1; 66099357Smarkm return (0); /* Do not add this value. */ 66199357Smarkm } 66299357Smarkm 66399357Smarkm /* 66499357Smarkm * SUSv3 states that `ps -G grouplist' should match "real-group 66599357Smarkm * ID numbers", and does not mention group-names. I do want to 66699357Smarkm * also support group-names, so this tries for a group-id first, 66799357Smarkm * and only tries for a name if that doesn't work. This is the 66899357Smarkm * opposite order of what is done in addelem_uid(), but in 66999357Smarkm * practice the order would only matter for group-names which 67099357Smarkm * are all-numeric. 67199357Smarkm */ 67299357Smarkm grp = NULL; 67399357Smarkm nameorID = "named"; 67499357Smarkm errno = 0; 67599357Smarkm bigtemp = strtoul(elem, &endp, 10); 67699357Smarkm if (errno == 0 && *endp == '\0' && bigtemp <= GID_MAX) { 67799357Smarkm nameorID = "name or ID matches"; 67899357Smarkm grp = getgrgid((gid_t)bigtemp); 67999357Smarkm } 68099357Smarkm if (grp == NULL) 68199357Smarkm grp = getgrnam(elem); 68299357Smarkm if (grp == NULL) { 68399357Smarkm warnx("No %s %s '%s'", inf->lname, nameorID, elem); 68499357Smarkm optfatal = 1; 68599357Smarkm return (0); 68699357Smarkm } 68799357Smarkm if (inf->count >= inf->maxcount) 68899357Smarkm expand_list(inf); 68999357Smarkm inf->l.gids[(inf->count)++] = grp->gr_gid; 69099357Smarkm return (1); 69199357Smarkm} 69299357Smarkm 69399357Smarkm#define BSD_PID_MAX 99999 /* Copy of PID_MAX from sys/proc.h. */ 69499357Smarkmstatic int 69599357Smarkmaddelem_pid(struct listinfo *inf, const char *elem) 69699357Smarkm{ 69799357Smarkm char *endp; 69899357Smarkm long tempid; 69999357Smarkm 70099357Smarkm if (*elem == '\0') { 70199357Smarkm warnx("Invalid (zero-length) process id"); 70299357Smarkm optfatal = 1; 70399357Smarkm return (0); /* Do not add this value. */ 70499357Smarkm } 70599357Smarkm 70699357Smarkm errno = 0; 70799357Smarkm tempid = strtol(elem, &endp, 10); 70899357Smarkm if (*endp != '\0' || tempid < 0 || elem == endp) { 70999357Smarkm warnx("Invalid %s: %s", inf->lname, elem); 71099357Smarkm errno = ERANGE; 71199357Smarkm } else if (errno != 0 || tempid > BSD_PID_MAX) { 71299357Smarkm warnx("%s too large: %s", inf->lname, elem); 71399357Smarkm errno = ERANGE; 71499357Smarkm } 71599357Smarkm if (errno == ERANGE) { 71699357Smarkm optfatal = 1; 71799357Smarkm return (0); 71899357Smarkm } 71999357Smarkm if (inf->count >= inf->maxcount) 72099357Smarkm expand_list(inf); 72199357Smarkm inf->l.pids[(inf->count)++] = tempid; 72299357Smarkm return (1); 72399357Smarkm} 72499357Smarkm#undef BSD_PID_MAX 72599357Smarkm 72699357Smarkm/*- 72799357Smarkm * The user can specify a device via one of three formats: 72899357Smarkm * 1) fully qualified, e.g.: /dev/ttyp0 /dev/console /dev/pts/0 72999357Smarkm * 2) missing "/dev", e.g.: ttyp0 console pts/0 73099357Smarkm * 3) two-letters, e.g.: p0 co 0 73199357Smarkm * (matching letters that would be seen in the "TT" column) 73299357Smarkm */ 73399357Smarkmstatic int 73499357Smarkmaddelem_tty(struct listinfo *inf, const char *elem) 73599357Smarkm{ 73699357Smarkm const char *ttypath; 73799357Smarkm struct stat sb; 73899357Smarkm char pathbuf[PATH_MAX], pathbuf2[PATH_MAX], pathbuf3[PATH_MAX]; 73999357Smarkm 74099357Smarkm ttypath = NULL; 74199357Smarkm pathbuf2[0] = '\0'; 74299357Smarkm pathbuf3[0] = '\0'; 74399357Smarkm switch (*elem) { 74499357Smarkm case '/': 74599357Smarkm ttypath = elem; 74699357Smarkm break; 74799357Smarkm case 'c': 74899357Smarkm if (strcmp(elem, "co") == 0) { 74999357Smarkm ttypath = _PATH_CONSOLE; 75099357Smarkm break; 75199357Smarkm } 75299357Smarkm /* FALLTHROUGH */ 75399357Smarkm default: 75499357Smarkm strlcpy(pathbuf, _PATH_DEV, sizeof(pathbuf)); 75599357Smarkm strlcat(pathbuf, elem, sizeof(pathbuf)); 75699357Smarkm ttypath = pathbuf; 75799357Smarkm if (strncmp(pathbuf, _PATH_TTY, strlen(_PATH_TTY)) == 0) 75899357Smarkm break; 75999357Smarkm if (strncmp(pathbuf, _PATH_PTS, strlen(_PATH_PTS)) == 0) 76099357Smarkm break; 76199357Smarkm if (strcmp(pathbuf, _PATH_CONSOLE) == 0) 76299357Smarkm break; 76399357Smarkm /* Check to see if /dev/tty${elem} exists */ 76499357Smarkm strlcpy(pathbuf2, _PATH_TTY, sizeof(pathbuf2)); 76599357Smarkm strlcat(pathbuf2, elem, sizeof(pathbuf2)); 76699357Smarkm if (stat(pathbuf2, &sb) == 0 && S_ISCHR(sb.st_mode)) { 76799357Smarkm /* No need to repeat stat() && S_ISCHR() checks */ 76899357Smarkm ttypath = NULL; 76999357Smarkm break; 77099357Smarkm } 77199357Smarkm /* Check to see if /dev/pts/${elem} exists */ 77299357Smarkm strlcpy(pathbuf3, _PATH_PTS, sizeof(pathbuf3)); 77399357Smarkm strlcat(pathbuf3, elem, sizeof(pathbuf3)); 77499357Smarkm if (stat(pathbuf3, &sb) == 0 && S_ISCHR(sb.st_mode)) { 77599357Smarkm /* No need to repeat stat() && S_ISCHR() checks */ 77699357Smarkm ttypath = NULL; 77799357Smarkm break; 77899357Smarkm } 77999357Smarkm break; 78099357Smarkm } 78199357Smarkm if (ttypath) { 78299357Smarkm if (stat(ttypath, &sb) == -1) { 78399357Smarkm if (pathbuf3[0] != '\0') 78499357Smarkm warn("%s, %s, and %s", pathbuf3, pathbuf2, 78599357Smarkm ttypath); 78699357Smarkm else 78799357Smarkm warn("%s", ttypath); 78899357Smarkm optfatal = 1; 78999357Smarkm return (0); 79099357Smarkm } 79199357Smarkm if (!S_ISCHR(sb.st_mode)) { 79299357Smarkm if (pathbuf3[0] != '\0') 79399357Smarkm warnx("%s, %s, and %s: Not a terminal", 79499357Smarkm pathbuf3, pathbuf2, ttypath); 79599357Smarkm else 79699357Smarkm warnx("%s: Not a terminal", ttypath); 79799357Smarkm optfatal = 1; 79899357Smarkm return (0); 79999357Smarkm } 80099357Smarkm } 80199357Smarkm if (inf->count >= inf->maxcount) 80299357Smarkm expand_list(inf); 80399357Smarkm inf->l.ttys[(inf->count)++] = sb.st_rdev; 80499357Smarkm return (1); 80599357Smarkm} 80699357Smarkm 80799357Smarkmstatic int 80899357Smarkmaddelem_uid(struct listinfo *inf, const char *elem) 80999357Smarkm{ 81099357Smarkm struct passwd *pwd; 81199357Smarkm char *endp; 81299357Smarkm u_long bigtemp; 81399357Smarkm 81499357Smarkm if (*elem == '\0' || strlen(elem) >= MAXLOGNAME) { 81599357Smarkm if (*elem == '\0') 81699357Smarkm warnx("Invalid (zero-length) %s name", inf->lname); 81799357Smarkm else 81899357Smarkm warnx("%s name too long: %s", inf->lname, elem); 81999357Smarkm optfatal = 1; 82099357Smarkm return (0); /* Do not add this value. */ 82199357Smarkm } 82299357Smarkm 82399357Smarkm pwd = getpwnam(elem); 82499357Smarkm if (pwd == NULL) { 82599357Smarkm errno = 0; 82699357Smarkm bigtemp = strtoul(elem, &endp, 10); 82799357Smarkm if (errno != 0 || *endp != '\0' || bigtemp > UID_MAX) 82899357Smarkm warnx("No %s named '%s'", inf->lname, elem); 82999357Smarkm else { 83099357Smarkm /* The string is all digits, so it might be a userID. */ 83199357Smarkm pwd = getpwuid((uid_t)bigtemp); 83299357Smarkm if (pwd == NULL) 83399357Smarkm warnx("No %s name or ID matches '%s'", 83499357Smarkm inf->lname, elem); 83599357Smarkm } 83699357Smarkm } 83799357Smarkm if (pwd == NULL) { 83899357Smarkm /* 83999357Smarkm * These used to be treated as minor warnings (and the 84099357Smarkm * option was simply ignored), but now they are fatal 84199357Smarkm * errors (and the command will be aborted). 842293335Semaste */ 843293335Semaste optfatal = 1; 844270309Sse return (0); 845270309Sse } 846270309Sse if (inf->count >= inf->maxcount) 847270309Sse expand_list(inf); 848270309Sse inf->l.uids[(inf->count)++] = pwd->pw_uid; 84999357Smarkm return (1); 85099357Smarkm} 85199357Smarkm 85299357Smarkmstatic void 85399357Smarkmadd_list(struct listinfo *inf, const char *argp) 85499357Smarkm{ 85599357Smarkm const char *savep; 85699357Smarkm char *cp, *endp; 85799357Smarkm int toolong; 85899357Smarkm char elemcopy[PATH_MAX]; 85999357Smarkm 86099357Smarkm if (*argp == 0) 86199357Smarkm inf->addelem(inf, elemcopy); 86299357Smarkm while (*argp != '\0') { 86399357Smarkm while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 864154151Sflz argp++; 865154151Sflz savep = argp; 866154151Sflz toolong = 0; 86799357Smarkm cp = elemcopy; 86899357Smarkm if (strchr(T_SEP, *argp) == NULL) { 86999357Smarkm endp = elemcopy + sizeof(elemcopy) - 1; 87099357Smarkm while (*argp != '\0' && cp <= endp && 87199357Smarkm strchr(W_SEP T_SEP, *argp) == NULL) 872 *cp++ = *argp++; 873 if (cp > endp) 874 toolong = 1; 875 } 876 if (!toolong) { 877 *cp = '\0'; 878 /* 879 * Add this single element to the given list. 880 */ 881 inf->addelem(inf, elemcopy); 882 } else { 883 /* 884 * The string is too long to copy. Find the end 885 * of the string to print out the warning message. 886 */ 887 while (*argp != '\0' && strchr(W_SEP T_SEP, 888 *argp) == NULL) 889 argp++; 890 warnx("Value too long: %.*s", (int)(argp - savep), 891 savep); 892 optfatal = 1; 893 } 894 /* 895 * Skip over any number of trailing whitespace characters, 896 * but only one (at most) trailing element-terminating 897 * character. 898 */ 899 while (*argp != '\0' && strchr(W_SEP, *argp) != NULL) 900 argp++; 901 if (*argp != '\0' && strchr(T_SEP, *argp) != NULL) { 902 argp++; 903 /* Catch case where string ended with a comma. */ 904 if (*argp == '\0') 905 inf->addelem(inf, argp); 906 } 907 } 908} 909 910static void 911descendant_sort(KINFO *ki, int items) 912{ 913 int dst, lvl, maxlvl, n, ndst, nsrc, siblings, src; 914 unsigned char *path; 915 KINFO kn; 916 917 /* 918 * First, sort the entries by descendancy, tracking the descendancy 919 * depth in the ki_d.level field. 920 */ 921 src = 0; 922 maxlvl = 0; 923 while (src < items) { 924 if (ki[src].ki_d.level) { 925 src++; 926 continue; 927 } 928 for (nsrc = 1; src + nsrc < items; nsrc++) 929 if (!ki[src + nsrc].ki_d.level) 930 break; 931 932 for (dst = 0; dst < items; dst++) { 933 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_pid) 934 continue; 935 if (ki[dst].ki_p->ki_pid == ki[src].ki_p->ki_ppid) 936 break; 937 } 938 939 if (dst == items) { 940 src += nsrc; 941 continue; 942 } 943 944 for (ndst = 1; dst + ndst < items; ndst++) 945 if (ki[dst + ndst].ki_d.level <= ki[dst].ki_d.level) 946 break; 947 948 for (n = src; n < src + nsrc; n++) { 949 ki[n].ki_d.level += ki[dst].ki_d.level + 1; 950 if (maxlvl < ki[n].ki_d.level) 951 maxlvl = ki[n].ki_d.level; 952 } 953 954 while (nsrc) { 955 if (src < dst) { 956 kn = ki[src]; 957 memmove(ki + src, ki + src + 1, 958 (dst - src + ndst - 1) * sizeof *ki); 959 ki[dst + ndst - 1] = kn; 960 nsrc--; 961 dst--; 962 ndst++; 963 } else if (src != dst + ndst) { 964 kn = ki[src]; 965 memmove(ki + dst + ndst + 1, ki + dst + ndst, 966 (src - dst - ndst) * sizeof *ki); 967 ki[dst + ndst] = kn; 968 ndst++; 969 nsrc--; 970 src++; 971 } else { 972 ndst += nsrc; 973 src += nsrc; 974 nsrc = 0; 975 } 976 } 977 } 978 979 /* 980 * Now populate ki_d.prefix (instead of ki_d.level) with the command 981 * prefix used to show descendancies. 982 */ 983 path = malloc((maxlvl + 7) / 8); 984 memset(path, '\0', (maxlvl + 7) / 8); 985 for (src = 0; src < items; src++) { 986 if ((lvl = ki[src].ki_d.level) == 0) { 987 ki[src].ki_d.prefix = NULL; 988 continue; 989 } 990 if ((ki[src].ki_d.prefix = malloc(lvl * 2 + 1)) == NULL) 991 errx(1, "malloc failed"); 992 for (n = 0; n < lvl - 2; n++) { 993 ki[src].ki_d.prefix[n * 2] = 994 path[n / 8] & 1 << (n % 8) ? '|' : ' '; 995 ki[src].ki_d.prefix[n * 2 + 1] = ' '; 996 } 997 if (n == lvl - 2) { 998 /* Have I any more siblings? */ 999 for (siblings = 0, dst = src + 1; dst < items; dst++) { 1000 if (ki[dst].ki_d.level > lvl) 1001 continue; 1002 if (ki[dst].ki_d.level == lvl) 1003 siblings = 1; 1004 break; 1005 } 1006 if (siblings) 1007 path[n / 8] |= 1 << (n % 8); 1008 else 1009 path[n / 8] &= ~(1 << (n % 8)); 1010 ki[src].ki_d.prefix[n * 2] = siblings ? '|' : '`'; 1011 ki[src].ki_d.prefix[n * 2 + 1] = '-'; 1012 n++; 1013 } 1014 strcpy(ki[src].ki_d.prefix + n * 2, "- "); 1015 } 1016 free(path); 1017} 1018 1019static void * 1020expand_list(struct listinfo *inf) 1021{ 1022 void *newlist; 1023 int newmax; 1024 1025 newmax = (inf->maxcount + 1) << 1; 1026 newlist = realloc(inf->l.ptr, newmax * inf->elemsize); 1027 if (newlist == NULL) { 1028 free(inf->l.ptr); 1029 errx(1, "realloc to %d %ss failed", newmax, inf->lname); 1030 } 1031 inf->maxcount = newmax; 1032 inf->l.ptr = newlist; 1033 1034 return (newlist); 1035} 1036 1037static void 1038free_list(struct listinfo *inf) 1039{ 1040 1041 inf->count = inf->elemsize = inf->maxcount = 0; 1042 if (inf->l.ptr != NULL) 1043 free(inf->l.ptr); 1044 inf->addelem = NULL; 1045 inf->lname = NULL; 1046 inf->l.ptr = NULL; 1047} 1048 1049static void 1050init_list(struct listinfo *inf, addelem_rtn artn, int elemsize, 1051 const char *lname) 1052{ 1053 1054 inf->count = inf->maxcount = 0; 1055 inf->elemsize = elemsize; 1056 inf->addelem = artn; 1057 inf->lname = lname; 1058 inf->l.ptr = NULL; 1059} 1060 1061VARENT * 1062find_varentry(VAR *v) 1063{ 1064 struct varent *vent; 1065 1066 STAILQ_FOREACH(vent, &varlist, next_ve) { 1067 if (strcmp(vent->var->name, v->name) == 0) 1068 return vent; 1069 } 1070 return NULL; 1071} 1072 1073static void 1074scanvars(void) 1075{ 1076 struct varent *vent; 1077 VAR *v; 1078 1079 STAILQ_FOREACH(vent, &varlist, next_ve) { 1080 v = vent->var; 1081 if (v->flag & DSIZ) { 1082 v->dwidth = v->width; 1083 v->width = 0; 1084 } 1085 if (v->flag & USER) 1086 needuser = 1; 1087 if (v->flag & COMM) 1088 needcomm = 1; 1089 } 1090} 1091 1092static void 1093dynsizevars(KINFO *ki) 1094{ 1095 struct varent *vent; 1096 VAR *v; 1097 int i; 1098 1099 STAILQ_FOREACH(vent, &varlist, next_ve) { 1100 v = vent->var; 1101 if (!(v->flag & DSIZ)) 1102 continue; 1103 i = (v->sproc)( ki); 1104 if (v->width < i) 1105 v->width = i; 1106 if (v->width > v->dwidth) 1107 v->width = v->dwidth; 1108 } 1109} 1110 1111static void 1112sizevars(void) 1113{ 1114 struct varent *vent; 1115 VAR *v; 1116 int i; 1117 1118 STAILQ_FOREACH(vent, &varlist, next_ve) { 1119 v = vent->var; 1120 i = strlen(vent->header); 1121 if (v->width < i) 1122 v->width = i; 1123 totwidth += v->width + 1; /* +1 for space */ 1124 } 1125 totwidth--; 1126} 1127 1128static const char * 1129fmt(char **(*fn)(kvm_t *, const struct kinfo_proc *, int), KINFO *ki, 1130 char *comm, int maxlen) 1131{ 1132 const char *s; 1133 1134 s = fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, maxlen); 1135 return (s); 1136} 1137 1138#define UREADOK(ki) (forceuread || (ki->ki_p->ki_flag & P_INMEM)) 1139 1140static void 1141saveuser(KINFO *ki) 1142{ 1143 1144 if (ki->ki_p->ki_flag & P_INMEM) { 1145 /* 1146 * The u-area might be swapped out, and we can't get 1147 * at it because we have a crashdump and no swap. 1148 * If it's here fill in these fields, otherwise, just 1149 * leave them 0. 1150 */ 1151 ki->ki_valid = 1; 1152 } else 1153 ki->ki_valid = 0; 1154 /* 1155 * save arguments if needed 1156 */ 1157 if (needcomm) { 1158 if (ki->ki_p->ki_stat == SZOMB) 1159 ki->ki_args = strdup("<defunct>"); 1160 else if (UREADOK(ki) || (ki->ki_p->ki_args != NULL)) 1161 ki->ki_args = strdup(fmt(kvm_getargv, ki, 1162 ki->ki_p->ki_comm, MAXCOMLEN)); 1163 else 1164 asprintf(&ki->ki_args, "(%s)", ki->ki_p->ki_comm); 1165 if (ki->ki_args == NULL) 1166 errx(1, "malloc failed"); 1167 } else { 1168 ki->ki_args = NULL; 1169 } 1170 if (needenv) { 1171 if (UREADOK(ki)) 1172 ki->ki_env = strdup(fmt(kvm_getenvv, ki, 1173 (char *)NULL, 0)); 1174 else 1175 ki->ki_env = strdup("()"); 1176 if (ki->ki_env == NULL) 1177 errx(1, "malloc failed"); 1178 } else { 1179 ki->ki_env = NULL; 1180 } 1181} 1182 1183/* A macro used to improve the readability of pscomp(). */ 1184#define DIFF_RETURN(a, b, field) do { \ 1185 if ((a)->field != (b)->field) \ 1186 return (((a)->field < (b)->field) ? -1 : 1); \ 1187} while (0) 1188 1189static int 1190pscomp(const void *a, const void *b) 1191{ 1192 const KINFO *ka, *kb; 1193 1194 ka = a; 1195 kb = b; 1196 /* SORTCPU and SORTMEM are sorted in descending order. */ 1197 if (sortby == SORTCPU) 1198 DIFF_RETURN(kb, ka, ki_pcpu); 1199 if (sortby == SORTMEM) 1200 DIFF_RETURN(kb, ka, ki_memsize); 1201 /* 1202 * TTY's are sorted in ascending order, except that all NODEV 1203 * processes come before all processes with a device. 1204 */ 1205 if (ka->ki_p->ki_tdev != kb->ki_p->ki_tdev) { 1206 if (ka->ki_p->ki_tdev == NODEV) 1207 return (-1); 1208 if (kb->ki_p->ki_tdev == NODEV) 1209 return (1); 1210 DIFF_RETURN(ka, kb, ki_p->ki_tdev); 1211 } 1212 1213 /* PID's and TID's (threads) are sorted in ascending order. */ 1214 DIFF_RETURN(ka, kb, ki_p->ki_pid); 1215 DIFF_RETURN(ka, kb, ki_p->ki_tid); 1216 return (0); 1217} 1218#undef DIFF_RETURN 1219 1220/* 1221 * ICK (all for getopt), would rather hide the ugliness 1222 * here than taint the main code. 1223 * 1224 * ps foo -> ps -foo 1225 * ps 34 -> ps -p34 1226 * 1227 * The old convention that 't' with no trailing tty arg means the users 1228 * tty, is only supported if argv[1] doesn't begin with a '-'. This same 1229 * feature is available with the option 'T', which takes no argument. 1230 */ 1231static char * 1232kludge_oldps_options(const char *optlist, char *origval, const char *nextarg) 1233{ 1234 size_t len; 1235 char *argp, *cp, *newopts, *ns, *optp, *pidp; 1236 1237 /* 1238 * See if the original value includes any option which takes an 1239 * argument (and will thus use up the remainder of the string). 1240 */ 1241 argp = NULL; 1242 if (optlist != NULL) { 1243 for (cp = origval; *cp != '\0'; cp++) { 1244 optp = strchr(optlist, *cp); 1245 if ((optp != NULL) && *(optp + 1) == ':') { 1246 argp = cp; 1247 break; 1248 } 1249 } 1250 } 1251 if (argp != NULL && *origval == '-') 1252 return (origval); 1253 1254 /* 1255 * if last letter is a 't' flag with no argument (in the context 1256 * of the oldps options -- option string NOT starting with a '-' -- 1257 * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)). 1258 * 1259 * However, if a flag accepting a string argument is found earlier 1260 * in the option string (including a possible `t' flag), then the 1261 * remainder of the string must be the argument to that flag; so 1262 * do not modify that argument. Note that a trailing `t' would 1263 * cause argp to be set, if argp was not already set by some 1264 * earlier option. 1265 */ 1266 len = strlen(origval); 1267 cp = origval + len - 1; 1268 pidp = NULL; 1269 if (*cp == 't' && *origval != '-' && cp == argp) { 1270 if (nextarg == NULL || *nextarg == '-' || isdigitch(*nextarg)) 1271 *cp = 'T'; 1272 } else if (argp == NULL) { 1273 /* 1274 * The original value did not include any option which takes 1275 * an argument (and that would include `p' and `t'), so check 1276 * the value for trailing number, or comma-separated list of 1277 * numbers, which we will treat as a pid request. 1278 */ 1279 if (isdigitch(*cp)) { 1280 while (cp >= origval && (*cp == ',' || isdigitch(*cp))) 1281 --cp; 1282 pidp = cp + 1; 1283 } 1284 } 1285 1286 /* 1287 * If nothing needs to be added to the string, then return 1288 * the "original" (although possibly modified) value. 1289 */ 1290 if (*origval == '-' && pidp == NULL) 1291 return (origval); 1292 1293 /* 1294 * Create a copy of the string to add '-' and/or 'p' to the 1295 * original value. 1296 */ 1297 if ((newopts = ns = malloc(len + 3)) == NULL) 1298 errx(1, "malloc failed"); 1299 1300 if (*origval != '-') 1301 *ns++ = '-'; /* add option flag */ 1302 1303 if (pidp == NULL) 1304 strcpy(ns, origval); 1305 else { 1306 /* 1307 * Copy everything before the pid string, add the `p', 1308 * and then copy the pid string. 1309 */ 1310 len = pidp - origval; 1311 memcpy(ns, origval, len); 1312 ns += len; 1313 *ns++ = 'p'; 1314 strcpy(ns, pidp); 1315 } 1316 1317 return (newopts); 1318} 1319 1320static int 1321check_procfs(void) 1322{ 1323 struct statfs mnt; 1324 1325 if (statfs("/proc", &mnt) < 0) 1326 return (0); 1327 if (strcmp(mnt.f_fstypename, "procfs") != 0) 1328 return (0); 1329 return (1); 1330} 1331 1332static void 1333usage(void) 1334{ 1335#define SINGLE_OPTS "[-aCcde" OPT_LAZY_f "HhjlmrSTuvwXxZ]" 1336 1337 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 1338 "usage: ps " SINGLE_OPTS " [-O fmt | -o fmt] [-G gid[,gid...]]", 1339 " [-M core] [-N system]", 1340 " [-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]", 1341 " ps [-L]"); 1342 exit(1); 1343} 1344