1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 29*7c478bd9Sstevel@tonic-gate 30*7c478bd9Sstevel@tonic-gate 31*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 32*7c478bd9Sstevel@tonic-gate 33*7c478bd9Sstevel@tonic-gate 34*7c478bd9Sstevel@tonic-gate #include <stdlib.h> 35*7c478bd9Sstevel@tonic-gate #include <fcntl.h> 36*7c478bd9Sstevel@tonic-gate #include <errno.h> 37*7c478bd9Sstevel@tonic-gate #include <poll.h> 38*7c478bd9Sstevel@tonic-gate #include <string.h> 39*7c478bd9Sstevel@tonic-gate #include <signal.h> 40*7c478bd9Sstevel@tonic-gate #include <sys/types.h> 41*7c478bd9Sstevel@tonic-gate #include <sys/stat.h> 42*7c478bd9Sstevel@tonic-gate #include <sys/stropts.h> 43*7c478bd9Sstevel@tonic-gate #include <sys/resource.h> 44*7c478bd9Sstevel@tonic-gate #include <sys/termios.h> 45*7c478bd9Sstevel@tonic-gate #include <pwd.h> 46*7c478bd9Sstevel@tonic-gate #include <grp.h> 47*7c478bd9Sstevel@tonic-gate #include <unistd.h> 48*7c478bd9Sstevel@tonic-gate #include <ulimit.h> 49*7c478bd9Sstevel@tonic-gate 50*7c478bd9Sstevel@tonic-gate #include "sac.h" 51*7c478bd9Sstevel@tonic-gate #include "ttymon.h" 52*7c478bd9Sstevel@tonic-gate #include "tmstruct.h" 53*7c478bd9Sstevel@tonic-gate #include "tmextern.h" 54*7c478bd9Sstevel@tonic-gate 55*7c478bd9Sstevel@tonic-gate static int Initialized; 56*7c478bd9Sstevel@tonic-gate 57*7c478bd9Sstevel@tonic-gate extern int Retry; 58*7c478bd9Sstevel@tonic-gate extern struct pollfd *Pollp; 59*7c478bd9Sstevel@tonic-gate static void initialize(); 60*7c478bd9Sstevel@tonic-gate static void open_all(); 61*7c478bd9Sstevel@tonic-gate static int set_poll(); 62*7c478bd9Sstevel@tonic-gate static int check_spawnlimit(); 63*7c478bd9Sstevel@tonic-gate static int mod_ttydefs(); 64*7c478bd9Sstevel@tonic-gate 65*7c478bd9Sstevel@tonic-gate void open_device(); 66*7c478bd9Sstevel@tonic-gate void set_softcar(); 67*7c478bd9Sstevel@tonic-gate 68*7c478bd9Sstevel@tonic-gate extern int check_session(); 69*7c478bd9Sstevel@tonic-gate extern void sigalarm(); 70*7c478bd9Sstevel@tonic-gate extern void revokedevaccess(char *, uid_t, gid_t, mode_t); 71*7c478bd9Sstevel@tonic-gate /* can't include libdevinfo.h */ 72*7c478bd9Sstevel@tonic-gate extern int di_devperm_logout(const char *); 73*7c478bd9Sstevel@tonic-gate 74*7c478bd9Sstevel@tonic-gate /* 75*7c478bd9Sstevel@tonic-gate * ttymon - a port monitor under SAC 76*7c478bd9Sstevel@tonic-gate * - monitor ports, set terminal modes, baud rate 77*7c478bd9Sstevel@tonic-gate * and line discipline for the port 78*7c478bd9Sstevel@tonic-gate * - invoke service on port if connection request received 79*7c478bd9Sstevel@tonic-gate * - Usage: ttymon 80*7c478bd9Sstevel@tonic-gate * ttymon -g [options] 81*7c478bd9Sstevel@tonic-gate * Valid options are 82*7c478bd9Sstevel@tonic-gate * -h 83*7c478bd9Sstevel@tonic-gate * -d device 84*7c478bd9Sstevel@tonic-gate * -l ttylabel 85*7c478bd9Sstevel@tonic-gate * -t timeout 86*7c478bd9Sstevel@tonic-gate * -m modules 87*7c478bd9Sstevel@tonic-gate * -p prompt 88*7c478bd9Sstevel@tonic-gate * 89*7c478bd9Sstevel@tonic-gate * - ttymon without args is invoked by SAC 90*7c478bd9Sstevel@tonic-gate * - ttymon -g is invoked by process that needs to 91*7c478bd9Sstevel@tonic-gate * have login service on the fly 92*7c478bd9Sstevel@tonic-gate */ 93*7c478bd9Sstevel@tonic-gate 94*7c478bd9Sstevel@tonic-gate main(argc, argv) 95*7c478bd9Sstevel@tonic-gate int argc; 96*7c478bd9Sstevel@tonic-gate char *argv[]; 97*7c478bd9Sstevel@tonic-gate { 98*7c478bd9Sstevel@tonic-gate int nfds; 99*7c478bd9Sstevel@tonic-gate extern char *lastname(); 100*7c478bd9Sstevel@tonic-gate 101*7c478bd9Sstevel@tonic-gate /* 102*7c478bd9Sstevel@tonic-gate * Only the superuser should execute this command. 103*7c478bd9Sstevel@tonic-gate */ 104*7c478bd9Sstevel@tonic-gate if (getuid() != 0) 105*7c478bd9Sstevel@tonic-gate return (1); /*NOTREACHED*/ 106*7c478bd9Sstevel@tonic-gate 107*7c478bd9Sstevel@tonic-gate if ((argc > 1) || (strcmp(lastname(argv[0]), "getty") == 0)) { 108*7c478bd9Sstevel@tonic-gate ttymon_express(argc, argv); 109*7c478bd9Sstevel@tonic-gate return (1); /*NOTREACHED*/ 110*7c478bd9Sstevel@tonic-gate } 111*7c478bd9Sstevel@tonic-gate /* remember original signal mask and dispositions */ 112*7c478bd9Sstevel@tonic-gate (void) sigprocmask(SIG_SETMASK, NULL, &Origmask); 113*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGINT, &Sigint, NULL); 114*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGALRM, &Sigalrm, NULL); 115*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGPOLL, &Sigpoll, NULL); 116*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGCLD, &Sigcld, NULL); 117*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGTERM, &Sigterm, NULL); 118*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 119*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGUSR1, &Sigusr1, NULL); 120*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGUSR2, &Sigusr2, NULL); 121*7c478bd9Sstevel@tonic-gate #endif 122*7c478bd9Sstevel@tonic-gate initialize(); 123*7c478bd9Sstevel@tonic-gate 124*7c478bd9Sstevel@tonic-gate for (;;) { 125*7c478bd9Sstevel@tonic-gate nfds = set_poll(Pollp); 126*7c478bd9Sstevel@tonic-gate if (!Reread_flag) { 127*7c478bd9Sstevel@tonic-gate if (nfds > 0) 128*7c478bd9Sstevel@tonic-gate do_poll(Pollp, nfds); 129*7c478bd9Sstevel@tonic-gate else 130*7c478bd9Sstevel@tonic-gate (void) pause(); 131*7c478bd9Sstevel@tonic-gate } 132*7c478bd9Sstevel@tonic-gate /* 133*7c478bd9Sstevel@tonic-gate * READDB messages may arrive during poll or pause. 134*7c478bd9Sstevel@tonic-gate * So the flag needs to be checked again. 135*7c478bd9Sstevel@tonic-gate */ 136*7c478bd9Sstevel@tonic-gate if (Reread_flag) { 137*7c478bd9Sstevel@tonic-gate Reread_flag = FALSE; 138*7c478bd9Sstevel@tonic-gate re_read(); 139*7c478bd9Sstevel@tonic-gate } 140*7c478bd9Sstevel@tonic-gate while (Retry) { 141*7c478bd9Sstevel@tonic-gate Retry = FALSE; 142*7c478bd9Sstevel@tonic-gate open_all(); 143*7c478bd9Sstevel@tonic-gate } 144*7c478bd9Sstevel@tonic-gate } 145*7c478bd9Sstevel@tonic-gate } 146*7c478bd9Sstevel@tonic-gate 147*7c478bd9Sstevel@tonic-gate static void 148*7c478bd9Sstevel@tonic-gate initialize() 149*7c478bd9Sstevel@tonic-gate { 150*7c478bd9Sstevel@tonic-gate struct pmtab *tp; 151*7c478bd9Sstevel@tonic-gate register struct passwd *pwdp; 152*7c478bd9Sstevel@tonic-gate register struct group *gp; 153*7c478bd9Sstevel@tonic-gate struct rlimit rlimit; 154*7c478bd9Sstevel@tonic-gate extern struct rlimit Rlimit; 155*7c478bd9Sstevel@tonic-gate extern uid_t Uucp_uid; 156*7c478bd9Sstevel@tonic-gate extern gid_t Tty_gid; 157*7c478bd9Sstevel@tonic-gate 158*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 159*7c478bd9Sstevel@tonic-gate extern opendebug(); 160*7c478bd9Sstevel@tonic-gate #endif 161*7c478bd9Sstevel@tonic-gate Initialized = FALSE; 162*7c478bd9Sstevel@tonic-gate /* 163*7c478bd9Sstevel@tonic-gate * get_environ() must be called first, 164*7c478bd9Sstevel@tonic-gate * otherwise we don't know where the log file is 165*7c478bd9Sstevel@tonic-gate */ 166*7c478bd9Sstevel@tonic-gate get_environ(); 167*7c478bd9Sstevel@tonic-gate openttymonlog(); 168*7c478bd9Sstevel@tonic-gate openpid(); 169*7c478bd9Sstevel@tonic-gate openpipes(); 170*7c478bd9Sstevel@tonic-gate setup_PCpipe(); 171*7c478bd9Sstevel@tonic-gate 172*7c478bd9Sstevel@tonic-gate log("PMTAG: %s", Tag); 173*7c478bd9Sstevel@tonic-gate log("Starting state: %s", 174*7c478bd9Sstevel@tonic-gate (State == PM_ENABLED) ? "enabled" : "disabled"); 175*7c478bd9Sstevel@tonic-gate 176*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 177*7c478bd9Sstevel@tonic-gate opendebug(FALSE); 178*7c478bd9Sstevel@tonic-gate debug("***** ttymon in initialize *****"); 179*7c478bd9Sstevel@tonic-gate log("debug mode is \t on"); 180*7c478bd9Sstevel@tonic-gate #endif 181*7c478bd9Sstevel@tonic-gate 182*7c478bd9Sstevel@tonic-gate catch_signals(); 183*7c478bd9Sstevel@tonic-gate 184*7c478bd9Sstevel@tonic-gate /* register to receive SIGPOLL when data comes to pmpipe */ 185*7c478bd9Sstevel@tonic-gate if (ioctl(Pfd, I_SETSIG, S_INPUT) < 0) 186*7c478bd9Sstevel@tonic-gate fatal("I_SETSIG on pmpipe failed: %s", strerror(errno)); 187*7c478bd9Sstevel@tonic-gate 188*7c478bd9Sstevel@tonic-gate sacpoll(); /* this is needed because there may be data already */ 189*7c478bd9Sstevel@tonic-gate 190*7c478bd9Sstevel@tonic-gate Maxfiles = (int)ulimit(4, 0L); /* get max number of open files */ 191*7c478bd9Sstevel@tonic-gate if (Maxfiles < 0) 192*7c478bd9Sstevel@tonic-gate fatal("ulimit(4,0L) failed: %s", strerror(errno)); 193*7c478bd9Sstevel@tonic-gate 194*7c478bd9Sstevel@tonic-gate if (getrlimit(RLIMIT_NOFILE, &Rlimit) == -1) 195*7c478bd9Sstevel@tonic-gate fatal("getrlimit failed: %s", strerror(errno)); 196*7c478bd9Sstevel@tonic-gate 197*7c478bd9Sstevel@tonic-gate rlimit.rlim_cur = rlimit.rlim_max = Rlimit.rlim_max; 198*7c478bd9Sstevel@tonic-gate if (setrlimit(RLIMIT_NOFILE, &rlimit) == -1) 199*7c478bd9Sstevel@tonic-gate fatal("setrlimit failed: %s", strerror(errno)); 200*7c478bd9Sstevel@tonic-gate 201*7c478bd9Sstevel@tonic-gate Maxfiles = rlimit.rlim_cur; 202*7c478bd9Sstevel@tonic-gate Maxfds = Maxfiles - FILE_RESERVED; 203*7c478bd9Sstevel@tonic-gate 204*7c478bd9Sstevel@tonic-gate log("max open files = %d", Maxfiles); 205*7c478bd9Sstevel@tonic-gate log("max ports ttymon can monitor = %d", Maxfds); 206*7c478bd9Sstevel@tonic-gate 207*7c478bd9Sstevel@tonic-gate read_pmtab(); 208*7c478bd9Sstevel@tonic-gate 209*7c478bd9Sstevel@tonic-gate /* 210*7c478bd9Sstevel@tonic-gate * setup poll array 211*7c478bd9Sstevel@tonic-gate * - we allocate 10 extra pollfd so that 212*7c478bd9Sstevel@tonic-gate * we do not have to re-malloc when there is 213*7c478bd9Sstevel@tonic-gate * minor fluctuation in Nentries 214*7c478bd9Sstevel@tonic-gate */ 215*7c478bd9Sstevel@tonic-gate Npollfd = Nentries + 10; 216*7c478bd9Sstevel@tonic-gate if (Npollfd > Maxfds) 217*7c478bd9Sstevel@tonic-gate Npollfd = Maxfds; 218*7c478bd9Sstevel@tonic-gate if ((Pollp = (struct pollfd *) 219*7c478bd9Sstevel@tonic-gate malloc((unsigned)(Npollfd * sizeof (struct pollfd)))) 220*7c478bd9Sstevel@tonic-gate == (struct pollfd *)NULL) 221*7c478bd9Sstevel@tonic-gate fatal("malloc for Pollp failed"); 222*7c478bd9Sstevel@tonic-gate 223*7c478bd9Sstevel@tonic-gate (void) mod_ttydefs(); /* just to initialize Mtime */ 224*7c478bd9Sstevel@tonic-gate if (check_version(TTYDEFS_VERS, TTYDEFS) != 0) 225*7c478bd9Sstevel@tonic-gate fatal("check /etc/ttydefs version failed"); 226*7c478bd9Sstevel@tonic-gate 227*7c478bd9Sstevel@tonic-gate read_ttydefs(NULL, FALSE); 228*7c478bd9Sstevel@tonic-gate 229*7c478bd9Sstevel@tonic-gate /* initialize global variables, Uucp_uid & Tty_gid */ 230*7c478bd9Sstevel@tonic-gate if ((pwdp = getpwnam(UUCP)) != NULL) 231*7c478bd9Sstevel@tonic-gate Uucp_uid = pwdp->pw_uid; 232*7c478bd9Sstevel@tonic-gate if ((gp = getgrnam(TTY)) == NULL) 233*7c478bd9Sstevel@tonic-gate log("no group entry for <tty>, default is used"); 234*7c478bd9Sstevel@tonic-gate else 235*7c478bd9Sstevel@tonic-gate Tty_gid = gp->gr_gid; 236*7c478bd9Sstevel@tonic-gate endgrent(); 237*7c478bd9Sstevel@tonic-gate endpwent(); 238*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 239*7c478bd9Sstevel@tonic-gate debug("Uucp_uid = %ld, Tty_gid = %ld", Uucp_uid, Tty_gid); 240*7c478bd9Sstevel@tonic-gate #endif 241*7c478bd9Sstevel@tonic-gate 242*7c478bd9Sstevel@tonic-gate log("Initialization Completed"); 243*7c478bd9Sstevel@tonic-gate 244*7c478bd9Sstevel@tonic-gate /* open the devices ttymon monitors */ 245*7c478bd9Sstevel@tonic-gate Retry = TRUE; 246*7c478bd9Sstevel@tonic-gate while (Retry) { 247*7c478bd9Sstevel@tonic-gate Retry = FALSE; 248*7c478bd9Sstevel@tonic-gate for (tp = PMtab; tp; tp = tp->p_next) { 249*7c478bd9Sstevel@tonic-gate if ((tp->p_status > 0) && (tp->p_fd == 0) && 250*7c478bd9Sstevel@tonic-gate (tp->p_pid == 0) && !(tp->p_ttyflags & I_FLAG) && 251*7c478bd9Sstevel@tonic-gate (!((State == PM_DISABLED) && 252*7c478bd9Sstevel@tonic-gate ((tp->p_dmsg == NULL)||(*(tp->p_dmsg) == '\0'))))) { 253*7c478bd9Sstevel@tonic-gate open_device(tp); 254*7c478bd9Sstevel@tonic-gate if (tp->p_fd > 0) 255*7c478bd9Sstevel@tonic-gate got_carrier(tp); 256*7c478bd9Sstevel@tonic-gate } 257*7c478bd9Sstevel@tonic-gate } 258*7c478bd9Sstevel@tonic-gate } 259*7c478bd9Sstevel@tonic-gate Initialized = TRUE; 260*7c478bd9Sstevel@tonic-gate } 261*7c478bd9Sstevel@tonic-gate 262*7c478bd9Sstevel@tonic-gate /* 263*7c478bd9Sstevel@tonic-gate * open_all - open devices in pmtab if the entry is 264*7c478bd9Sstevel@tonic-gate * - valid, fd = 0, and pid = 0 265*7c478bd9Sstevel@tonic-gate */ 266*7c478bd9Sstevel@tonic-gate static void 267*7c478bd9Sstevel@tonic-gate open_all() 268*7c478bd9Sstevel@tonic-gate { 269*7c478bd9Sstevel@tonic-gate struct pmtab *tp; 270*7c478bd9Sstevel@tonic-gate int check_modtime; 271*7c478bd9Sstevel@tonic-gate static void free_defs(); 272*7c478bd9Sstevel@tonic-gate sigset_t cset; 273*7c478bd9Sstevel@tonic-gate sigset_t tset; 274*7c478bd9Sstevel@tonic-gate 275*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 276*7c478bd9Sstevel@tonic-gate debug("in open_all"); 277*7c478bd9Sstevel@tonic-gate #endif 278*7c478bd9Sstevel@tonic-gate check_modtime = TRUE; 279*7c478bd9Sstevel@tonic-gate 280*7c478bd9Sstevel@tonic-gate for (tp = PMtab; tp; tp = tp->p_next) { 281*7c478bd9Sstevel@tonic-gate if ((tp->p_status > 0) && (tp->p_fd == 0) && 282*7c478bd9Sstevel@tonic-gate (tp->p_pid == 0) && 283*7c478bd9Sstevel@tonic-gate !(tp->p_ttyflags & I_FLAG) && (!((State == PM_DISABLED) && 284*7c478bd9Sstevel@tonic-gate ((tp->p_dmsg == NULL)||(*(tp->p_dmsg) == '\0'))))) { 285*7c478bd9Sstevel@tonic-gate /* 286*7c478bd9Sstevel@tonic-gate * if we have not check modification time and 287*7c478bd9Sstevel@tonic-gate * /etc/ttydefs was modified, need to re-read it 288*7c478bd9Sstevel@tonic-gate */ 289*7c478bd9Sstevel@tonic-gate if (check_modtime && mod_ttydefs()) { 290*7c478bd9Sstevel@tonic-gate check_modtime = FALSE; 291*7c478bd9Sstevel@tonic-gate (void) sigprocmask(SIG_SETMASK, NULL, &cset); 292*7c478bd9Sstevel@tonic-gate tset = cset; 293*7c478bd9Sstevel@tonic-gate (void) sigaddset(&tset, SIGCLD); 294*7c478bd9Sstevel@tonic-gate (void) sigprocmask(SIG_SETMASK, &tset, NULL); 295*7c478bd9Sstevel@tonic-gate free_defs(); 296*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 297*7c478bd9Sstevel@tonic-gate debug("/etc/ttydefs is modified, re-read it"); 298*7c478bd9Sstevel@tonic-gate #endif 299*7c478bd9Sstevel@tonic-gate read_ttydefs(NULL, FALSE); 300*7c478bd9Sstevel@tonic-gate (void) sigprocmask(SIG_SETMASK, &cset, NULL); 301*7c478bd9Sstevel@tonic-gate } 302*7c478bd9Sstevel@tonic-gate open_device(tp); 303*7c478bd9Sstevel@tonic-gate if (tp->p_fd > 0) 304*7c478bd9Sstevel@tonic-gate got_carrier(tp); 305*7c478bd9Sstevel@tonic-gate } else if (((tp->p_status == LOCKED) || 306*7c478bd9Sstevel@tonic-gate (tp->p_status == SESSION) || 307*7c478bd9Sstevel@tonic-gate (tp->p_status == UNACCESS)) && 308*7c478bd9Sstevel@tonic-gate (tp->p_fd > 0) && 309*7c478bd9Sstevel@tonic-gate (!((State == PM_DISABLED) && 310*7c478bd9Sstevel@tonic-gate ((tp->p_dmsg == NULL)||(*(tp->p_dmsg) == '\0'))))) { 311*7c478bd9Sstevel@tonic-gate if (check_modtime && mod_ttydefs()) { 312*7c478bd9Sstevel@tonic-gate check_modtime = FALSE; 313*7c478bd9Sstevel@tonic-gate (void) sigprocmask(SIG_SETMASK, NULL, &cset); 314*7c478bd9Sstevel@tonic-gate tset = cset; 315*7c478bd9Sstevel@tonic-gate (void) sigaddset(&tset, SIGCLD); 316*7c478bd9Sstevel@tonic-gate (void) sigprocmask(SIG_SETMASK, &tset, NULL); 317*7c478bd9Sstevel@tonic-gate free_defs(); 318*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 319*7c478bd9Sstevel@tonic-gate debug("/etc/ttydefs is modified, re-read it"); 320*7c478bd9Sstevel@tonic-gate #endif 321*7c478bd9Sstevel@tonic-gate read_ttydefs(NULL, FALSE); 322*7c478bd9Sstevel@tonic-gate (void) sigprocmask(SIG_SETMASK, &cset, NULL); 323*7c478bd9Sstevel@tonic-gate } 324*7c478bd9Sstevel@tonic-gate tp->p_status = VALID; 325*7c478bd9Sstevel@tonic-gate open_device(tp); 326*7c478bd9Sstevel@tonic-gate if (tp->p_fd > 0) 327*7c478bd9Sstevel@tonic-gate got_carrier(tp); 328*7c478bd9Sstevel@tonic-gate } 329*7c478bd9Sstevel@tonic-gate } 330*7c478bd9Sstevel@tonic-gate } 331*7c478bd9Sstevel@tonic-gate 332*7c478bd9Sstevel@tonic-gate void 333*7c478bd9Sstevel@tonic-gate set_softcar(pmptr) 334*7c478bd9Sstevel@tonic-gate struct pmtab *pmptr; 335*7c478bd9Sstevel@tonic-gate { 336*7c478bd9Sstevel@tonic-gate 337*7c478bd9Sstevel@tonic-gate int fd, val = 0; 338*7c478bd9Sstevel@tonic-gate 339*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 340*7c478bd9Sstevel@tonic-gate debug("in set_softcar"); 341*7c478bd9Sstevel@tonic-gate #endif 342*7c478bd9Sstevel@tonic-gate /* 343*7c478bd9Sstevel@tonic-gate * If soft carrier is not set one way or 344*7c478bd9Sstevel@tonic-gate * the other, leave it alone. 345*7c478bd9Sstevel@tonic-gate */ 346*7c478bd9Sstevel@tonic-gate if (*pmptr->p_softcar == '\0') 347*7c478bd9Sstevel@tonic-gate return; 348*7c478bd9Sstevel@tonic-gate 349*7c478bd9Sstevel@tonic-gate if (*pmptr->p_softcar == 'y') 350*7c478bd9Sstevel@tonic-gate val = 1; 351*7c478bd9Sstevel@tonic-gate 352*7c478bd9Sstevel@tonic-gate if ((fd = open(pmptr->p_device, O_RDONLY|O_NONBLOCK|O_NOCTTY)) < 0) { 353*7c478bd9Sstevel@tonic-gate log("open (%s) failed: %s", pmptr->p_device, strerror(errno)); 354*7c478bd9Sstevel@tonic-gate return; 355*7c478bd9Sstevel@tonic-gate } 356*7c478bd9Sstevel@tonic-gate 357*7c478bd9Sstevel@tonic-gate if (ioctl(fd, TIOCSSOFTCAR, &val) < 0) 358*7c478bd9Sstevel@tonic-gate log("set soft-carrier (%s) failed: %s", pmptr->p_device, 359*7c478bd9Sstevel@tonic-gate strerror(errno)); 360*7c478bd9Sstevel@tonic-gate 361*7c478bd9Sstevel@tonic-gate close(fd); 362*7c478bd9Sstevel@tonic-gate } 363*7c478bd9Sstevel@tonic-gate 364*7c478bd9Sstevel@tonic-gate 365*7c478bd9Sstevel@tonic-gate /* 366*7c478bd9Sstevel@tonic-gate * open_device(pmptr) - open the device 367*7c478bd9Sstevel@tonic-gate * - check device lock 368*7c478bd9Sstevel@tonic-gate * - change owner of device 369*7c478bd9Sstevel@tonic-gate * - push line disciplines 370*7c478bd9Sstevel@tonic-gate * - set termio 371*7c478bd9Sstevel@tonic-gate */ 372*7c478bd9Sstevel@tonic-gate 373*7c478bd9Sstevel@tonic-gate void 374*7c478bd9Sstevel@tonic-gate open_device(pmptr) 375*7c478bd9Sstevel@tonic-gate struct pmtab *pmptr; 376*7c478bd9Sstevel@tonic-gate { 377*7c478bd9Sstevel@tonic-gate int fd, tmpfd; 378*7c478bd9Sstevel@tonic-gate struct sigaction sigact; 379*7c478bd9Sstevel@tonic-gate 380*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 381*7c478bd9Sstevel@tonic-gate debug("in open_device"); 382*7c478bd9Sstevel@tonic-gate #endif 383*7c478bd9Sstevel@tonic-gate 384*7c478bd9Sstevel@tonic-gate if (pmptr->p_status == GETTY) { 385*7c478bd9Sstevel@tonic-gate revokedevaccess(pmptr->p_device, 0, 0, 0); 386*7c478bd9Sstevel@tonic-gate 387*7c478bd9Sstevel@tonic-gate if ((fd = open(pmptr->p_device, O_RDWR)) == -1) 388*7c478bd9Sstevel@tonic-gate fatal("open (%s) failed: %s", pmptr->p_device, 389*7c478bd9Sstevel@tonic-gate strerror(errno)); 390*7c478bd9Sstevel@tonic-gate 391*7c478bd9Sstevel@tonic-gate } else { 392*7c478bd9Sstevel@tonic-gate if (check_spawnlimit(pmptr) == -1) { 393*7c478bd9Sstevel@tonic-gate pmptr->p_status = NOTVALID; 394*7c478bd9Sstevel@tonic-gate log("service <%s> is respawning too rapidly", 395*7c478bd9Sstevel@tonic-gate pmptr->p_tag); 396*7c478bd9Sstevel@tonic-gate return; 397*7c478bd9Sstevel@tonic-gate } 398*7c478bd9Sstevel@tonic-gate if (pmptr->p_fd > 0) { /* file already open */ 399*7c478bd9Sstevel@tonic-gate fd = pmptr->p_fd; 400*7c478bd9Sstevel@tonic-gate pmptr->p_fd = 0; 401*7c478bd9Sstevel@tonic-gate } else if ((fd = open(pmptr->p_device, O_RDWR|O_NONBLOCK)) 402*7c478bd9Sstevel@tonic-gate == -1) { 403*7c478bd9Sstevel@tonic-gate log("open (%s) failed: %s", pmptr->p_device, 404*7c478bd9Sstevel@tonic-gate strerror(errno)); 405*7c478bd9Sstevel@tonic-gate if ((errno == ENODEV) || (errno == EBUSY)) { 406*7c478bd9Sstevel@tonic-gate pmptr->p_status = UNACCESS; 407*7c478bd9Sstevel@tonic-gate Nlocked++; 408*7c478bd9Sstevel@tonic-gate if (Nlocked == 1) { 409*7c478bd9Sstevel@tonic-gate sigact.sa_flags = 0; 410*7c478bd9Sstevel@tonic-gate sigact.sa_handler = sigalarm; 411*7c478bd9Sstevel@tonic-gate (void) sigemptyset(&sigact.sa_mask); 412*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGALRM, &sigact, NULL); 413*7c478bd9Sstevel@tonic-gate (void) alarm(ALARMTIME); 414*7c478bd9Sstevel@tonic-gate } 415*7c478bd9Sstevel@tonic-gate } else 416*7c478bd9Sstevel@tonic-gate Retry = TRUE; 417*7c478bd9Sstevel@tonic-gate return; 418*7c478bd9Sstevel@tonic-gate } 419*7c478bd9Sstevel@tonic-gate /* set close-on-exec flag */ 420*7c478bd9Sstevel@tonic-gate if (fcntl(fd, F_SETFD, 1) == -1) 421*7c478bd9Sstevel@tonic-gate fatal("F_SETFD fcntl failed: %s", strerror(errno)); 422*7c478bd9Sstevel@tonic-gate 423*7c478bd9Sstevel@tonic-gate if (tm_checklock(fd) != 0) { 424*7c478bd9Sstevel@tonic-gate pmptr->p_status = LOCKED; 425*7c478bd9Sstevel@tonic-gate (void) close(fd); 426*7c478bd9Sstevel@tonic-gate Nlocked++; 427*7c478bd9Sstevel@tonic-gate if (Nlocked == 1) { 428*7c478bd9Sstevel@tonic-gate sigact.sa_flags = 0; 429*7c478bd9Sstevel@tonic-gate sigact.sa_handler = sigalarm; 430*7c478bd9Sstevel@tonic-gate (void) sigemptyset(&sigact.sa_mask); 431*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGALRM, &sigact, NULL); 432*7c478bd9Sstevel@tonic-gate (void) alarm(ALARMTIME); 433*7c478bd9Sstevel@tonic-gate } 434*7c478bd9Sstevel@tonic-gate return; 435*7c478bd9Sstevel@tonic-gate } 436*7c478bd9Sstevel@tonic-gate if (check_session(fd) != 0) { 437*7c478bd9Sstevel@tonic-gate if ((Initialized) && (pmptr->p_inservice != SESSION)) { 438*7c478bd9Sstevel@tonic-gate log("Warning -- active session exists on <%s>", 439*7c478bd9Sstevel@tonic-gate pmptr->p_device); 440*7c478bd9Sstevel@tonic-gate } else { 441*7c478bd9Sstevel@tonic-gate /* 442*7c478bd9Sstevel@tonic-gate * this may happen if a service is running 443*7c478bd9Sstevel@tonic-gate * and ttymon dies and is restarted, 444*7c478bd9Sstevel@tonic-gate * or another process is running on the 445*7c478bd9Sstevel@tonic-gate * port. 446*7c478bd9Sstevel@tonic-gate */ 447*7c478bd9Sstevel@tonic-gate pmptr->p_status = SESSION; 448*7c478bd9Sstevel@tonic-gate pmptr->p_inservice = 0; 449*7c478bd9Sstevel@tonic-gate (void) close(fd); 450*7c478bd9Sstevel@tonic-gate Nlocked++; 451*7c478bd9Sstevel@tonic-gate if (Nlocked == 1) { 452*7c478bd9Sstevel@tonic-gate sigact.sa_flags = 0; 453*7c478bd9Sstevel@tonic-gate sigact.sa_handler = sigalarm; 454*7c478bd9Sstevel@tonic-gate (void) sigemptyset(&sigact.sa_mask); 455*7c478bd9Sstevel@tonic-gate (void) sigaction(SIGALRM, &sigact, 456*7c478bd9Sstevel@tonic-gate NULL); 457*7c478bd9Sstevel@tonic-gate (void) alarm(ALARMTIME); 458*7c478bd9Sstevel@tonic-gate } 459*7c478bd9Sstevel@tonic-gate return; 460*7c478bd9Sstevel@tonic-gate } 461*7c478bd9Sstevel@tonic-gate } 462*7c478bd9Sstevel@tonic-gate pmptr->p_inservice = 0; 463*7c478bd9Sstevel@tonic-gate } 464*7c478bd9Sstevel@tonic-gate 465*7c478bd9Sstevel@tonic-gate if (pmptr->p_ttyflags & H_FLAG) { 466*7c478bd9Sstevel@tonic-gate /* drop DTR */ 467*7c478bd9Sstevel@tonic-gate (void) hang_up_line(fd); 468*7c478bd9Sstevel@tonic-gate /* 469*7c478bd9Sstevel@tonic-gate * After hang_up_line, the stream is in STRHUP state. 470*7c478bd9Sstevel@tonic-gate * We need to do another open to reinitialize streams 471*7c478bd9Sstevel@tonic-gate * then we can close one fd 472*7c478bd9Sstevel@tonic-gate */ 473*7c478bd9Sstevel@tonic-gate if ((tmpfd = open(pmptr->p_device, O_RDWR|O_NONBLOCK)) == -1) { 474*7c478bd9Sstevel@tonic-gate log("open (%s) failed: %s", pmptr->p_device, 475*7c478bd9Sstevel@tonic-gate strerror(errno)); 476*7c478bd9Sstevel@tonic-gate Retry = TRUE; 477*7c478bd9Sstevel@tonic-gate (void) close(fd); 478*7c478bd9Sstevel@tonic-gate return; 479*7c478bd9Sstevel@tonic-gate } 480*7c478bd9Sstevel@tonic-gate (void) close(tmpfd); 481*7c478bd9Sstevel@tonic-gate } 482*7c478bd9Sstevel@tonic-gate 483*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 484*7c478bd9Sstevel@tonic-gate debug("open_device (%s), fd = %d", pmptr->p_device, fd); 485*7c478bd9Sstevel@tonic-gate #endif 486*7c478bd9Sstevel@tonic-gate 487*7c478bd9Sstevel@tonic-gate /* Change ownership of the tty line to root/uucp and */ 488*7c478bd9Sstevel@tonic-gate /* set protections to only allow root/uucp to read the line. */ 489*7c478bd9Sstevel@tonic-gate 490*7c478bd9Sstevel@tonic-gate if (pmptr->p_ttyflags & (B_FLAG|C_FLAG)) 491*7c478bd9Sstevel@tonic-gate (void) fchown(fd, Uucp_uid, Tty_gid); 492*7c478bd9Sstevel@tonic-gate else 493*7c478bd9Sstevel@tonic-gate (void) fchown(fd, ROOTUID, Tty_gid); 494*7c478bd9Sstevel@tonic-gate (void) fchmod(fd, 0620); 495*7c478bd9Sstevel@tonic-gate 496*7c478bd9Sstevel@tonic-gate if ((pmptr->p_modules != NULL)&&(*(pmptr->p_modules) != '\0')) { 497*7c478bd9Sstevel@tonic-gate if (push_linedisc(fd, pmptr->p_modules, pmptr->p_device) 498*7c478bd9Sstevel@tonic-gate == -1) { 499*7c478bd9Sstevel@tonic-gate Retry = TRUE; 500*7c478bd9Sstevel@tonic-gate (void) close(fd); 501*7c478bd9Sstevel@tonic-gate return; 502*7c478bd9Sstevel@tonic-gate } 503*7c478bd9Sstevel@tonic-gate } 504*7c478bd9Sstevel@tonic-gate 505*7c478bd9Sstevel@tonic-gate if (initial_termio(fd, pmptr) == -1) { 506*7c478bd9Sstevel@tonic-gate Retry = TRUE; 507*7c478bd9Sstevel@tonic-gate (void) close(fd); 508*7c478bd9Sstevel@tonic-gate return; 509*7c478bd9Sstevel@tonic-gate } 510*7c478bd9Sstevel@tonic-gate 511*7c478bd9Sstevel@tonic-gate di_devperm_logout((const char *)pmptr->p_device); 512*7c478bd9Sstevel@tonic-gate pmptr->p_fd = fd; 513*7c478bd9Sstevel@tonic-gate } 514*7c478bd9Sstevel@tonic-gate 515*7c478bd9Sstevel@tonic-gate /* 516*7c478bd9Sstevel@tonic-gate * set_poll(fdp) - put all fd's in a pollfd array 517*7c478bd9Sstevel@tonic-gate * - set poll event to POLLIN and POLLMSG 518*7c478bd9Sstevel@tonic-gate * - return number of fd to be polled 519*7c478bd9Sstevel@tonic-gate */ 520*7c478bd9Sstevel@tonic-gate 521*7c478bd9Sstevel@tonic-gate static int 522*7c478bd9Sstevel@tonic-gate set_poll(fdp) 523*7c478bd9Sstevel@tonic-gate struct pollfd *fdp; 524*7c478bd9Sstevel@tonic-gate { 525*7c478bd9Sstevel@tonic-gate struct pmtab *tp; 526*7c478bd9Sstevel@tonic-gate int nfd = 0; 527*7c478bd9Sstevel@tonic-gate 528*7c478bd9Sstevel@tonic-gate for (tp = PMtab; tp; tp = tp->p_next) { 529*7c478bd9Sstevel@tonic-gate if (tp->p_fd > 0) { 530*7c478bd9Sstevel@tonic-gate fdp->fd = tp->p_fd; 531*7c478bd9Sstevel@tonic-gate fdp->events = POLLIN; 532*7c478bd9Sstevel@tonic-gate fdp++; 533*7c478bd9Sstevel@tonic-gate nfd++; 534*7c478bd9Sstevel@tonic-gate } 535*7c478bd9Sstevel@tonic-gate } 536*7c478bd9Sstevel@tonic-gate return (nfd); 537*7c478bd9Sstevel@tonic-gate } 538*7c478bd9Sstevel@tonic-gate 539*7c478bd9Sstevel@tonic-gate /* 540*7c478bd9Sstevel@tonic-gate * check_spawnlimit - return 0 if spawnlimit is not reached 541*7c478bd9Sstevel@tonic-gate * - otherwise return -1 542*7c478bd9Sstevel@tonic-gate */ 543*7c478bd9Sstevel@tonic-gate static int 544*7c478bd9Sstevel@tonic-gate check_spawnlimit(pmptr) 545*7c478bd9Sstevel@tonic-gate struct pmtab *pmptr; 546*7c478bd9Sstevel@tonic-gate { 547*7c478bd9Sstevel@tonic-gate time_t now; 548*7c478bd9Sstevel@tonic-gate 549*7c478bd9Sstevel@tonic-gate (void) time(&now); 550*7c478bd9Sstevel@tonic-gate if (pmptr->p_time == 0L) 551*7c478bd9Sstevel@tonic-gate pmptr->p_time = now; 552*7c478bd9Sstevel@tonic-gate if (pmptr->p_respawn >= SPAWN_LIMIT) { 553*7c478bd9Sstevel@tonic-gate if ((now - pmptr->p_time) < SPAWN_INTERVAL) { 554*7c478bd9Sstevel@tonic-gate pmptr->p_time = now; 555*7c478bd9Sstevel@tonic-gate pmptr->p_respawn = 0; 556*7c478bd9Sstevel@tonic-gate return (-1); 557*7c478bd9Sstevel@tonic-gate } 558*7c478bd9Sstevel@tonic-gate pmptr->p_time = now; 559*7c478bd9Sstevel@tonic-gate pmptr->p_respawn = 0; 560*7c478bd9Sstevel@tonic-gate } 561*7c478bd9Sstevel@tonic-gate pmptr->p_respawn++; 562*7c478bd9Sstevel@tonic-gate return (0); 563*7c478bd9Sstevel@tonic-gate } 564*7c478bd9Sstevel@tonic-gate 565*7c478bd9Sstevel@tonic-gate /* 566*7c478bd9Sstevel@tonic-gate * mod_ttydefs - to check if /etc/ttydefs has been modified 567*7c478bd9Sstevel@tonic-gate * - return TRUE if file modified 568*7c478bd9Sstevel@tonic-gate * - otherwise, return FALSE 569*7c478bd9Sstevel@tonic-gate */ 570*7c478bd9Sstevel@tonic-gate static int 571*7c478bd9Sstevel@tonic-gate mod_ttydefs() 572*7c478bd9Sstevel@tonic-gate { 573*7c478bd9Sstevel@tonic-gate struct stat statbuf; 574*7c478bd9Sstevel@tonic-gate extern long Mtime; 575*7c478bd9Sstevel@tonic-gate if (stat(TTYDEFS, &statbuf) == -1) { 576*7c478bd9Sstevel@tonic-gate /* if stat failed, don't bother reread ttydefs */ 577*7c478bd9Sstevel@tonic-gate return (FALSE); 578*7c478bd9Sstevel@tonic-gate } 579*7c478bd9Sstevel@tonic-gate if ((long)statbuf.st_mtime != Mtime) { 580*7c478bd9Sstevel@tonic-gate Mtime = (long)statbuf.st_mtime; 581*7c478bd9Sstevel@tonic-gate return (TRUE); 582*7c478bd9Sstevel@tonic-gate } 583*7c478bd9Sstevel@tonic-gate return (FALSE); 584*7c478bd9Sstevel@tonic-gate } 585*7c478bd9Sstevel@tonic-gate 586*7c478bd9Sstevel@tonic-gate /* 587*7c478bd9Sstevel@tonic-gate * free_defs - free the Gdef table 588*7c478bd9Sstevel@tonic-gate */ 589*7c478bd9Sstevel@tonic-gate static void 590*7c478bd9Sstevel@tonic-gate free_defs() 591*7c478bd9Sstevel@tonic-gate { 592*7c478bd9Sstevel@tonic-gate int i; 593*7c478bd9Sstevel@tonic-gate struct Gdef *tp; 594*7c478bd9Sstevel@tonic-gate tp = &Gdef[0]; 595*7c478bd9Sstevel@tonic-gate for (i = 0; i < Ndefs; i++, tp++) { 596*7c478bd9Sstevel@tonic-gate free(tp->g_id); 597*7c478bd9Sstevel@tonic-gate free(tp->g_iflags); 598*7c478bd9Sstevel@tonic-gate free(tp->g_fflags); 599*7c478bd9Sstevel@tonic-gate free(tp->g_nextid); 600*7c478bd9Sstevel@tonic-gate tp->g_id = NULL; 601*7c478bd9Sstevel@tonic-gate tp->g_iflags = NULL; 602*7c478bd9Sstevel@tonic-gate tp->g_fflags = NULL; 603*7c478bd9Sstevel@tonic-gate tp->g_nextid = NULL; 604*7c478bd9Sstevel@tonic-gate } 605*7c478bd9Sstevel@tonic-gate Ndefs = 0; 606*7c478bd9Sstevel@tonic-gate } 607*7c478bd9Sstevel@tonic-gate 608*7c478bd9Sstevel@tonic-gate /* 609*7c478bd9Sstevel@tonic-gate * struct Gdef *get_speed(ttylabel) 610*7c478bd9Sstevel@tonic-gate * - search "/etc/ttydefs" for speed and term. specification 611*7c478bd9Sstevel@tonic-gate * using "ttylabel". If "ttylabel" is NULL, default 612*7c478bd9Sstevel@tonic-gate * to DEFAULT 613*7c478bd9Sstevel@tonic-gate * arg: ttylabel - label/id of speed settings. 614*7c478bd9Sstevel@tonic-gate */ 615*7c478bd9Sstevel@tonic-gate 616*7c478bd9Sstevel@tonic-gate struct Gdef * 617*7c478bd9Sstevel@tonic-gate get_speed(char *ttylabel) 618*7c478bd9Sstevel@tonic-gate { 619*7c478bd9Sstevel@tonic-gate register struct Gdef *sp; 620*7c478bd9Sstevel@tonic-gate extern struct Gdef DEFAULT; 621*7c478bd9Sstevel@tonic-gate 622*7c478bd9Sstevel@tonic-gate if ((ttylabel != NULL) && (*ttylabel != '\0')) { 623*7c478bd9Sstevel@tonic-gate if ((sp = find_def(ttylabel)) == NULL) { 624*7c478bd9Sstevel@tonic-gate log("unable to find <%s> in \"%s\"", ttylabel, TTYDEFS); 625*7c478bd9Sstevel@tonic-gate sp = &DEFAULT; /* use default */ 626*7c478bd9Sstevel@tonic-gate } 627*7c478bd9Sstevel@tonic-gate } else sp = &DEFAULT; /* use default */ 628*7c478bd9Sstevel@tonic-gate return (sp); 629*7c478bd9Sstevel@tonic-gate } 630*7c478bd9Sstevel@tonic-gate 631*7c478bd9Sstevel@tonic-gate /* 632*7c478bd9Sstevel@tonic-gate * setup_PCpipe() - setup the pipe between Parent and Children 633*7c478bd9Sstevel@tonic-gate * - the pipe is used for a tmchild to send its 634*7c478bd9Sstevel@tonic-gate * pid to inform ttymon that it is about to 635*7c478bd9Sstevel@tonic-gate * invoke service 636*7c478bd9Sstevel@tonic-gate * - the pipe also serves as a mean for tmchild 637*7c478bd9Sstevel@tonic-gate * to detect failure of ttymon 638*7c478bd9Sstevel@tonic-gate */ 639*7c478bd9Sstevel@tonic-gate void 640*7c478bd9Sstevel@tonic-gate setup_PCpipe() 641*7c478bd9Sstevel@tonic-gate { 642*7c478bd9Sstevel@tonic-gate int flag = 0; 643*7c478bd9Sstevel@tonic-gate 644*7c478bd9Sstevel@tonic-gate if (pipe(PCpipe) == -1) 645*7c478bd9Sstevel@tonic-gate fatal("pipe() failed: %s", strerror(errno)); 646*7c478bd9Sstevel@tonic-gate 647*7c478bd9Sstevel@tonic-gate /* set close-on-exec flag */ 648*7c478bd9Sstevel@tonic-gate if (fcntl(PCpipe[0], F_SETFD, 1) == -1) 649*7c478bd9Sstevel@tonic-gate fatal("F_SETFD fcntl failed: %s", strerror(errno)); 650*7c478bd9Sstevel@tonic-gate 651*7c478bd9Sstevel@tonic-gate if (fcntl(PCpipe[1], F_SETFD, 1) == -1) 652*7c478bd9Sstevel@tonic-gate fatal("F_SETFD fcntl failed: %s", strerror(errno)); 653*7c478bd9Sstevel@tonic-gate 654*7c478bd9Sstevel@tonic-gate /* set O_NONBLOCK flag */ 655*7c478bd9Sstevel@tonic-gate if (fcntl(PCpipe[0], F_GETFL, flag) == -1) 656*7c478bd9Sstevel@tonic-gate fatal("F_GETFL failed: %s", strerror(errno)); 657*7c478bd9Sstevel@tonic-gate 658*7c478bd9Sstevel@tonic-gate flag |= O_NONBLOCK; 659*7c478bd9Sstevel@tonic-gate if (fcntl(PCpipe[0], F_SETFL, flag) == -1) 660*7c478bd9Sstevel@tonic-gate fatal("F_SETFL failed: %s", strerror(errno)); 661*7c478bd9Sstevel@tonic-gate 662*7c478bd9Sstevel@tonic-gate /* set message discard mode */ 663*7c478bd9Sstevel@tonic-gate if (ioctl(PCpipe[0], I_SRDOPT, RMSGD) == -1) 664*7c478bd9Sstevel@tonic-gate fatal("I_SRDOPT RMSGD failed: %s", strerror(errno)); 665*7c478bd9Sstevel@tonic-gate 666*7c478bd9Sstevel@tonic-gate /* register to receive SIGPOLL when data come */ 667*7c478bd9Sstevel@tonic-gate if (ioctl(PCpipe[0], I_SETSIG, S_INPUT) == -1) 668*7c478bd9Sstevel@tonic-gate fatal("I_SETSIG S_INPUT failed: %s", strerror(errno)); 669*7c478bd9Sstevel@tonic-gate 670*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 671*7c478bd9Sstevel@tonic-gate log("PCpipe[0]\t = %d", PCpipe[0]); 672*7c478bd9Sstevel@tonic-gate log("PCpipe[1]\t = %d", PCpipe[1]); 673*7c478bd9Sstevel@tonic-gate #endif 674*7c478bd9Sstevel@tonic-gate } 675