165123Speter/*- 265123Speter * Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org> 365123Speter * Copyright (c) 2000 Paul Saab <ps@FreeBSD.org> 465123Speter * All rights reserved. 565123Speter * 665123Speter * Redistribution and use in source and binary forms, with or without 765123Speter * modification, are permitted provided that the following conditions 865123Speter * are met: 965123Speter * 1. Redistributions of source code must retain the above copyright 1065123Speter * notice, this list of conditions and the following disclaimer. 1165123Speter * 2. Redistributions in binary form must reproduce the above copyright 1265123Speter * notice, this list of conditions and the following disclaimer in the 1365123Speter * documentation and/or other materials provided with the distribution. 1465123Speter * 1565123Speter * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1665123Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1765123Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1865123Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1965123Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2065123Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2165123Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2265123Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2365123Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2465123Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2565123Speter * SUCH DAMAGE. 2665123Speter */ 2765123Speter 2865177Speter#include <sys/cdefs.h> 2999112Sobrien__FBSDID("$FreeBSD$"); 3099112Sobrien 3165123Speter#include <sys/param.h> 32113277Smike#include <sys/jail.h> 3365123Speter#include <sys/stat.h> 34192896Sjamie#include <sys/uio.h> 3565123Speter#include <sys/user.h> 3665123Speter#include <sys/sysctl.h> 37200462Sdelphij#include <fcntl.h> 38200462Sdelphij#include <dirent.h> 39194869Sjamie#include <jail.h> 4065123Speter#include <stdio.h> 4165123Speter#include <stdlib.h> 4265123Speter#include <string.h> 4365123Speter#include <pwd.h> 4465123Speter#include <signal.h> 4565123Speter#include <regex.h> 4665123Speter#include <ctype.h> 4765123Speter#include <err.h> 4865123Speter#include <errno.h> 4965123Speter#include <unistd.h> 50132191Stjr#include <locale.h> 5165123Speter 5265177Speterstatic void __dead2 5365123Speterusage(void) 5465123Speter{ 5565123Speter 56192896Sjamie fprintf(stderr, "usage: killall [-delmsvz] [-help] [-j jail]\n"); 57113277Smike fprintf(stderr, 58124681Smaxim " [-u user] [-t tty] [-c cmd] [-SIGNAL] [cmd]...\n"); 5965123Speter fprintf(stderr, "At least one option or argument to specify processes must be given.\n"); 6065123Speter exit(1); 6165123Speter} 6265123Speter 6365123Speter 6465123Speterstatic void 6565123Speterprintsig(FILE *fp) 6665123Speter{ 6765123Speter const char *const * p; 6865123Speter int cnt; 6965123Speter int offset = 0; 7065123Speter 7165123Speter for (cnt = NSIG, p = sys_signame + 1; --cnt; ++p) { 72219347Sjilles offset += fprintf(fp, "%s ", *p); 7365123Speter if (offset >= 75 && cnt > 1) { 7465123Speter offset = 0; 7565123Speter fprintf(fp, "\n"); 7665123Speter } 7765123Speter } 7865123Speter fprintf(fp, "\n"); 7965123Speter} 8065123Speter 8165123Speterstatic void 8265123Speternosig(char *name) 8365123Speter{ 8465123Speter 8565123Speter warnx("unknown signal %s; valid signals:", name); 8665123Speter printsig(stderr); 8765123Speter exit(1); 8865123Speter} 8965123Speter 9065123Speterint 9165123Spetermain(int ac, char **av) 9265123Speter{ 93238060Skib struct kinfo_proc *procs, *newprocs; 9465123Speter struct stat sb; 9565127Speter struct passwd *pw; 9665123Speter regex_t rgx; 9765123Speter regmatch_t pmatch; 9865123Speter int i, j; 9965123Speter char buf[256]; 10065123Speter char *user = NULL; 10165123Speter char *tty = NULL; 10265123Speter char *cmd = NULL; 10365123Speter int vflag = 0; 10465123Speter int sflag = 0; 10565123Speter int dflag = 0; 106125013Sdds int eflag = 0; 107113277Smike int jflag = 0; 10865123Speter int mflag = 0; 10994689Sdes int zflag = 0; 11065123Speter uid_t uid = 0; 11165123Speter dev_t tdev = 0; 112124844Scperciva pid_t mypid; 11365123Speter char thiscmd[MAXCOMLEN + 1]; 11465123Speter pid_t thispid; 11565123Speter uid_t thisuid; 11665123Speter dev_t thistdev; 11765123Speter int sig = SIGTERM; 11865127Speter const char *const *p; 11965123Speter char *ep; 12065123Speter int errors = 0; 121113277Smike int jid; 12276678Sphk int mib[4]; 12365123Speter size_t miblen; 12465123Speter int st, nprocs; 12565123Speter size_t size; 12665123Speter int matched; 12765123Speter int killed = 0; 12865123Speter 129132191Stjr setlocale(LC_ALL, ""); 130132191Stjr 13165123Speter av++; 13265123Speter ac--; 13365123Speter 13465123Speter while (ac > 0) { 13565123Speter if (strcmp(*av, "-l") == 0) { 13665123Speter printsig(stdout); 13765123Speter exit(0); 13865123Speter } 13965177Speter if (strcmp(*av, "-help") == 0) 14065177Speter usage(); 14165123Speter if (**av == '-') { 14265123Speter ++*av; 14365123Speter switch (**av) { 144113277Smike case 'j': 145113277Smike ++*av; 146173502Sru if (**av == '\0') { 147113277Smike ++av; 148173502Sru --ac; 149173502Sru } 150113277Smike jflag++; 151173502Sru if (*av == NULL) 152192896Sjamie errx(1, "must specify jail"); 153194869Sjamie jid = jail_getid(*av); 154194869Sjamie if (jid < 0) 155194869Sjamie errx(1, "%s", jail_errmsg); 156113277Smike if (jail_attach(jid) == -1) 157192896Sjamie err(1, "jail_attach(%d)", jid); 158113277Smike break; 15965123Speter case 'u': 16065123Speter ++*av; 161173502Sru if (**av == '\0') { 16265123Speter ++av; 163173502Sru --ac; 164173502Sru } 165173502Sru if (*av == NULL) 166173502Sru errx(1, "must specify user"); 16765123Speter user = *av; 16865123Speter break; 16965123Speter case 't': 17065123Speter ++*av; 171173502Sru if (**av == '\0') { 17265123Speter ++av; 173173502Sru --ac; 174173502Sru } 175173502Sru if (*av == NULL) 176173502Sru errx(1, "must specify tty"); 17765123Speter tty = *av; 17865123Speter break; 17965123Speter case 'c': 18065123Speter ++*av; 181173502Sru if (**av == '\0') { 18265123Speter ++av; 183173502Sru --ac; 184173502Sru } 185173502Sru if (*av == NULL) 186173502Sru errx(1, "must specify procname"); 18765123Speter cmd = *av; 18865123Speter break; 18965123Speter case 'v': 19065123Speter vflag++; 19165123Speter break; 19265123Speter case 's': 19365123Speter sflag++; 19465123Speter break; 19565123Speter case 'd': 19665123Speter dflag++; 19765123Speter break; 198125013Sdds case 'e': 199125013Sdds eflag++; 200125013Sdds break; 20165123Speter case 'm': 20265123Speter mflag++; 20365123Speter break; 20494689Sdes case 'z': 20594689Sdes zflag++; 20694689Sdes break; 20765123Speter default: 208132193Stjr if (isalpha((unsigned char)**av)) { 209218285Sjilles if (strncasecmp(*av, "SIG", 3) == 0) 21065123Speter *av += 3; 21165123Speter for (sig = NSIG, p = sys_signame + 1; 21265123Speter --sig; ++p) 21365123Speter if (strcasecmp(*p, *av) == 0) { 21465123Speter sig = p - sys_signame; 21565123Speter break; 21665123Speter } 21765123Speter if (!sig) 21865123Speter nosig(*av); 219132193Stjr } else if (isdigit((unsigned char)**av)) { 22065123Speter sig = strtol(*av, &ep, 10); 22165123Speter if (!*av || *ep) 22265123Speter errx(1, "illegal signal number: %s", *av); 223132851Smaxim if (sig < 0 || sig >= NSIG) 22465123Speter nosig(*av); 22565123Speter } else 22665123Speter nosig(*av); 22765123Speter } 22865123Speter ++av; 22965123Speter --ac; 23065123Speter } else { 23165123Speter break; 23265123Speter } 23365123Speter } 23465123Speter 235113277Smike if (user == NULL && tty == NULL && cmd == NULL && !jflag && ac == 0) 23665123Speter usage(); 23765123Speter 23865123Speter if (tty) { 23965123Speter if (strncmp(tty, "/dev/", 5) == 0) 24065123Speter snprintf(buf, sizeof(buf), "%s", tty); 24165123Speter else if (strncmp(tty, "tty", 3) == 0) 24265123Speter snprintf(buf, sizeof(buf), "/dev/%s", tty); 24365123Speter else 24465123Speter snprintf(buf, sizeof(buf), "/dev/tty%s", tty); 24565123Speter if (stat(buf, &sb) < 0) 24665123Speter err(1, "stat(%s)", buf); 24765123Speter if (!S_ISCHR(sb.st_mode)) 24865123Speter errx(1, "%s: not a character device", buf); 24965123Speter tdev = sb.st_rdev; 25065123Speter if (dflag) 25165123Speter printf("ttydev:0x%x\n", tdev); 25265123Speter } 25365123Speter if (user) { 25478144Sobrien uid = strtol(user, &ep, 10); 25593432Sdwmalone if (*user == '\0' || *ep != '\0') { /* was it a number? */ 25678144Sobrien pw = getpwnam(user); 25778144Sobrien if (pw == NULL) 25878144Sobrien errx(1, "user %s does not exist", user); 25978144Sobrien uid = pw->pw_uid; 26078144Sobrien if (dflag) 26178144Sobrien printf("uid:%d\n", uid); 26278144Sobrien } 26365123Speter } else { 26465123Speter uid = getuid(); 26565123Speter if (uid != 0) { 26665123Speter pw = getpwuid(uid); 26765123Speter if (pw) 26865123Speter user = pw->pw_name; 26965123Speter if (dflag) 27065123Speter printf("uid:%d\n", uid); 27165123Speter } 27265123Speter } 27365123Speter size = 0; 27465123Speter mib[0] = CTL_KERN; 27565123Speter mib[1] = KERN_PROC; 27665123Speter 277119834Stjr if (user) { 278125013Sdds mib[2] = eflag ? KERN_PROC_UID : KERN_PROC_RUID; 27965123Speter mib[3] = uid; 280120500Stjr miblen = 4; 281119834Stjr } else if (tty) { 28265123Speter mib[2] = KERN_PROC_TTY; 28365123Speter mib[3] = tdev; 284120500Stjr miblen = 4; 285238060Skib } else { 286238060Skib mib[2] = KERN_PROC_PROC; 287238060Skib mib[3] = 0; 288238060Skib miblen = 3; 28965123Speter } 29065123Speter 291238060Skib procs = NULL; 29265123Speter st = sysctl(mib, miblen, NULL, &size, NULL, 0); 29365123Speter do { 29465123Speter size += size / 10; 29565123Speter newprocs = realloc(procs, size); 296238060Skib if (newprocs == NULL) { 297238060Skib free(procs); 298238060Skib err(1, "could not reallocate memory"); 29965123Speter } 30065123Speter procs = newprocs; 30165123Speter st = sysctl(mib, miblen, procs, &size, NULL, 0); 30265123Speter } while (st == -1 && errno == ENOMEM); 30365123Speter if (st == -1) 30465123Speter err(1, "could not sysctl(KERN_PROC)"); 30565123Speter if (size % sizeof(struct kinfo_proc) != 0) { 306132192Stjr fprintf(stderr, "proc size mismatch (%zu total, %zu chunks)\n", 30765123Speter size, sizeof(struct kinfo_proc)); 308238060Skib fprintf(stderr, "userland out of sync with kernel\n"); 30965123Speter exit(1); 31065123Speter } 31165123Speter nprocs = size / sizeof(struct kinfo_proc); 31265123Speter if (dflag) 31365123Speter printf("nprocs %d\n", nprocs); 314124844Scperciva mypid = getpid(); 31565123Speter 31665123Speter for (i = 0; i < nprocs; i++) { 317238061Skib if (procs[i].ki_stat == SZOMB && !zflag) 31894689Sdes continue; 31969941Sjhb thispid = procs[i].ki_pid; 320185074Sdelphij strlcpy(thiscmd, procs[i].ki_comm, sizeof(thiscmd)); 32169941Sjhb thistdev = procs[i].ki_tdev; 322125013Sdds if (eflag) 323125013Sdds thisuid = procs[i].ki_uid; /* effective uid */ 324125013Sdds else 325125013Sdds thisuid = procs[i].ki_ruid; /* real uid */ 32665123Speter 327124844Scperciva if (thispid == mypid) 328124844Scperciva continue; 32965123Speter matched = 1; 33065123Speter if (user) { 33165123Speter if (thisuid != uid) 33265123Speter matched = 0; 33365123Speter } 33465123Speter if (tty) { 33565123Speter if (thistdev != tdev) 33665123Speter matched = 0; 33765123Speter } 33865123Speter if (cmd) { 33965123Speter if (mflag) { 34065123Speter if (regcomp(&rgx, cmd, 34165123Speter REG_EXTENDED|REG_NOSUB) != 0) { 34265123Speter mflag = 0; 34365123Speter warnx("%s: illegal regexp", cmd); 34465123Speter } 34565123Speter } 34665123Speter if (mflag) { 34765123Speter pmatch.rm_so = 0; 34865123Speter pmatch.rm_eo = strlen(thiscmd); 34965123Speter if (regexec(&rgx, thiscmd, 0, &pmatch, 35065123Speter REG_STARTEND) != 0) 35165123Speter matched = 0; 35265123Speter regfree(&rgx); 35365123Speter } else { 35472497Speter if (strncmp(thiscmd, cmd, MAXCOMLEN) != 0) 35565123Speter matched = 0; 35665123Speter } 35765123Speter } 358113277Smike if (jflag && thispid == getpid()) 359113277Smike matched = 0; 36065123Speter if (matched == 0) 36165123Speter continue; 36271309Sache if (ac > 0) 36371309Sache matched = 0; 36465123Speter for (j = 0; j < ac; j++) { 36565123Speter if (mflag) { 36665123Speter if (regcomp(&rgx, av[j], 36765123Speter REG_EXTENDED|REG_NOSUB) != 0) { 36865123Speter mflag = 0; 36965123Speter warnx("%s: illegal regexp", av[j]); 37065123Speter } 37165123Speter } 37265123Speter if (mflag) { 37365123Speter pmatch.rm_so = 0; 37465123Speter pmatch.rm_eo = strlen(thiscmd); 37565123Speter if (regexec(&rgx, thiscmd, 0, &pmatch, 37665123Speter REG_STARTEND) == 0) 37765123Speter matched = 1; 37865123Speter regfree(&rgx); 37965123Speter } else { 38065123Speter if (strcmp(thiscmd, av[j]) == 0) 38165123Speter matched = 1; 38265123Speter } 38365123Speter if (matched) 38465123Speter break; 38565123Speter } 38665123Speter if (matched == 0) 38765123Speter continue; 38865123Speter if (dflag) 38965123Speter printf("sig:%d, cmd:%s, pid:%d, dev:0x%x uid:%d\n", sig, 39065123Speter thiscmd, thispid, thistdev, thisuid); 39165123Speter 39265123Speter if (vflag || sflag) 393219347Sjilles printf("kill -%s %d\n", sys_signame[sig], thispid); 39465123Speter 39565123Speter killed++; 39665123Speter if (!dflag && !sflag) { 39765123Speter if (kill(thispid, sig) < 0 /* && errno != ESRCH */ ) { 39896976Sdd warn("warning: kill -%s %d", 399219347Sjilles sys_signame[sig], thispid); 40065123Speter errors = 1; 40165123Speter } 40265123Speter } 40365123Speter } 40465123Speter if (killed == 0) { 40565123Speter fprintf(stderr, "No matching processes %swere found\n", 40665123Speter getuid() != 0 ? "belonging to you " : ""); 40765123Speter errors = 1; 40865123Speter } 40965123Speter exit(errors); 41065123Speter} 411