1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* 30*0Sstevel@tonic-gate * System message redirection driver for Sun. 31*0Sstevel@tonic-gate * 32*0Sstevel@tonic-gate * Redirects system message output to the device designated as the underlying 33*0Sstevel@tonic-gate * "hardware" console, as given by the value of sysmvp. The implementation 34*0Sstevel@tonic-gate * assumes that sysmvp denotes a STREAMS device; the assumption is justified 35*0Sstevel@tonic-gate * since consoles must be capable of effecting tty semantics. 36*0Sstevel@tonic-gate */ 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate #include <sys/types.h> 39*0Sstevel@tonic-gate #include <sys/kmem.h> 40*0Sstevel@tonic-gate #include <sys/open.h> 41*0Sstevel@tonic-gate #include <sys/param.h> 42*0Sstevel@tonic-gate #include <sys/systm.h> 43*0Sstevel@tonic-gate #include <sys/signal.h> 44*0Sstevel@tonic-gate #include <sys/cred.h> 45*0Sstevel@tonic-gate #include <sys/user.h> 46*0Sstevel@tonic-gate #include <sys/proc.h> 47*0Sstevel@tonic-gate #include <sys/vnode.h> 48*0Sstevel@tonic-gate #include <sys/uio.h> 49*0Sstevel@tonic-gate #include <sys/stat.h> 50*0Sstevel@tonic-gate #include <sys/file.h> 51*0Sstevel@tonic-gate #include <sys/stream.h> 52*0Sstevel@tonic-gate #include <sys/strsubr.h> 53*0Sstevel@tonic-gate #include <sys/poll.h> 54*0Sstevel@tonic-gate #include <sys/debug.h> 55*0Sstevel@tonic-gate #include <sys/sysmsg_impl.h> 56*0Sstevel@tonic-gate #include <sys/conf.h> 57*0Sstevel@tonic-gate #include <sys/termios.h> 58*0Sstevel@tonic-gate #include <sys/errno.h> 59*0Sstevel@tonic-gate #include <sys/modctl.h> 60*0Sstevel@tonic-gate #include <sys/pathname.h> 61*0Sstevel@tonic-gate #include <sys/ddi.h> 62*0Sstevel@tonic-gate #include <sys/sunddi.h> 63*0Sstevel@tonic-gate #include <sys/consdev.h> 64*0Sstevel@tonic-gate #include <sys/policy.h> 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate /* 67*0Sstevel@tonic-gate * internal functions 68*0Sstevel@tonic-gate */ 69*0Sstevel@tonic-gate static int sysmopen(dev_t *, int, int, cred_t *); 70*0Sstevel@tonic-gate static int sysmclose(dev_t, int, int, cred_t *); 71*0Sstevel@tonic-gate static int sysmread(dev_t, struct uio *, cred_t *); 72*0Sstevel@tonic-gate static int sysmwrite(dev_t, struct uio *, cred_t *); 73*0Sstevel@tonic-gate static int sysmioctl(dev_t, int, intptr_t, int, cred_t *, int *); 74*0Sstevel@tonic-gate static int sysmpoll(dev_t, short, int, short *, struct pollhead **); 75*0Sstevel@tonic-gate static int sysm_info(dev_info_t *, ddi_info_cmd_t, void *, void **); 76*0Sstevel@tonic-gate static int sysm_attach(dev_info_t *, ddi_attach_cmd_t); 77*0Sstevel@tonic-gate static int sysm_detach(dev_info_t *, ddi_detach_cmd_t); 78*0Sstevel@tonic-gate static void bind_consadm_conf(char *); 79*0Sstevel@tonic-gate static int checkarg(dev_t); 80*0Sstevel@tonic-gate 81*0Sstevel@tonic-gate static dev_info_t *sysm_dip; /* private copy of devinfo pointer */ 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate static struct cb_ops sysm_cb_ops = { 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate sysmopen, /* open */ 86*0Sstevel@tonic-gate sysmclose, /* close */ 87*0Sstevel@tonic-gate nodev, /* strategy */ 88*0Sstevel@tonic-gate nodev, /* print */ 89*0Sstevel@tonic-gate nodev, /* dump */ 90*0Sstevel@tonic-gate sysmread, /* read */ 91*0Sstevel@tonic-gate sysmwrite, /* write */ 92*0Sstevel@tonic-gate sysmioctl, /* ioctl */ 93*0Sstevel@tonic-gate nodev, /* devmap */ 94*0Sstevel@tonic-gate nodev, /* mmap */ 95*0Sstevel@tonic-gate nodev, /* segmap */ 96*0Sstevel@tonic-gate sysmpoll, /* poll */ 97*0Sstevel@tonic-gate ddi_prop_op, /* cb_prop_op */ 98*0Sstevel@tonic-gate NULL, /* streamtab */ 99*0Sstevel@tonic-gate D_NEW | D_MP, /* Driver compatibility flag */ 100*0Sstevel@tonic-gate CB_REV, /* cb_rev */ 101*0Sstevel@tonic-gate nodev, /* aread */ 102*0Sstevel@tonic-gate nodev /* awrite */ 103*0Sstevel@tonic-gate }; 104*0Sstevel@tonic-gate 105*0Sstevel@tonic-gate static struct dev_ops sysm_ops = { 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate DEVO_REV, /* devo_rev, */ 108*0Sstevel@tonic-gate 0, /* refcnt */ 109*0Sstevel@tonic-gate sysm_info, /* info */ 110*0Sstevel@tonic-gate nulldev, /* identify */ 111*0Sstevel@tonic-gate nulldev, /* probe */ 112*0Sstevel@tonic-gate sysm_attach, /* attach */ 113*0Sstevel@tonic-gate sysm_detach, /* detach */ 114*0Sstevel@tonic-gate nodev, /* reset */ 115*0Sstevel@tonic-gate &sysm_cb_ops, /* driver operations */ 116*0Sstevel@tonic-gate (struct bus_ops *)0, /* bus operations */ 117*0Sstevel@tonic-gate nulldev /* power */ 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate }; 120*0Sstevel@tonic-gate 121*0Sstevel@tonic-gate /* 122*0Sstevel@tonic-gate * Global variables associated with the console device: 123*0Sstevel@tonic-gate */ 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate #define SYS_SYSMIN 0 /* sysmsg minor number */ 126*0Sstevel@tonic-gate #define SYS_MSGMIN 1 /* msglog minor number */ 127*0Sstevel@tonic-gate #define SYSPATHLEN 255 /* length of device path */ 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate /* 130*0Sstevel@tonic-gate * Private driver state: 131*0Sstevel@tonic-gate */ 132*0Sstevel@tonic-gate 133*0Sstevel@tonic-gate #define MAXDEVS 5 134*0Sstevel@tonic-gate 135*0Sstevel@tonic-gate typedef struct { 136*0Sstevel@tonic-gate dev_t dca_devt; 137*0Sstevel@tonic-gate int dca_flags; 138*0Sstevel@tonic-gate vnode_t *dca_vp; 139*0Sstevel@tonic-gate krwlock_t dca_lock; 140*0Sstevel@tonic-gate char dca_name[SYSPATHLEN]; 141*0Sstevel@tonic-gate } devicecache_t; 142*0Sstevel@tonic-gate 143*0Sstevel@tonic-gate /* list of dyn. + persist. config'ed dev's */ 144*0Sstevel@tonic-gate static devicecache_t sysmcache[MAXDEVS]; 145*0Sstevel@tonic-gate static kmutex_t dcvp_mutex; 146*0Sstevel@tonic-gate static vnode_t *dcvp = NULL; 147*0Sstevel@tonic-gate 148*0Sstevel@tonic-gate /* flags for device cache */ 149*0Sstevel@tonic-gate #define SYSM_DISABLED 0x0 150*0Sstevel@tonic-gate #define SYSM_ENABLED 0x1 151*0Sstevel@tonic-gate 152*0Sstevel@tonic-gate /* 153*0Sstevel@tonic-gate * Module linkage information for the kernel. 154*0Sstevel@tonic-gate */ 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate static struct modldrv modldrv = { 157*0Sstevel@tonic-gate &mod_driverops, /* Type of module. This one is a pseudo driver */ 158*0Sstevel@tonic-gate "System message redirection (fanout) driver %I%", 159*0Sstevel@tonic-gate &sysm_ops, /* driver ops */ 160*0Sstevel@tonic-gate }; 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate static struct modlinkage modlinkage = { 163*0Sstevel@tonic-gate MODREV_1, 164*0Sstevel@tonic-gate &modldrv, 165*0Sstevel@tonic-gate NULL 166*0Sstevel@tonic-gate }; 167*0Sstevel@tonic-gate 168*0Sstevel@tonic-gate int 169*0Sstevel@tonic-gate _init(void) 170*0Sstevel@tonic-gate { 171*0Sstevel@tonic-gate return (mod_install(&modlinkage)); 172*0Sstevel@tonic-gate } 173*0Sstevel@tonic-gate 174*0Sstevel@tonic-gate int 175*0Sstevel@tonic-gate _fini(void) 176*0Sstevel@tonic-gate { 177*0Sstevel@tonic-gate return (mod_remove(&modlinkage)); 178*0Sstevel@tonic-gate } 179*0Sstevel@tonic-gate 180*0Sstevel@tonic-gate int 181*0Sstevel@tonic-gate _info(struct modinfo *modinfop) 182*0Sstevel@tonic-gate { 183*0Sstevel@tonic-gate return (mod_info(&modlinkage, modinfop)); 184*0Sstevel@tonic-gate } 185*0Sstevel@tonic-gate 186*0Sstevel@tonic-gate /* 187*0Sstevel@tonic-gate * DDI glue routines 188*0Sstevel@tonic-gate */ 189*0Sstevel@tonic-gate static int 190*0Sstevel@tonic-gate sysm_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 191*0Sstevel@tonic-gate { 192*0Sstevel@tonic-gate int i; 193*0Sstevel@tonic-gate 194*0Sstevel@tonic-gate switch (cmd) { 195*0Sstevel@tonic-gate case DDI_ATTACH: 196*0Sstevel@tonic-gate ASSERT(sysm_dip == NULL); 197*0Sstevel@tonic-gate 198*0Sstevel@tonic-gate if (ddi_create_minor_node(devi, "sysmsg", S_IFCHR, 199*0Sstevel@tonic-gate SYS_SYSMIN, DDI_PSEUDO, NULL) == DDI_FAILURE || 200*0Sstevel@tonic-gate ddi_create_minor_node(devi, "msglog", S_IFCHR, 201*0Sstevel@tonic-gate SYS_MSGMIN, DDI_PSEUDO, NULL) == DDI_FAILURE) { 202*0Sstevel@tonic-gate ddi_remove_minor_node(devi, NULL); 203*0Sstevel@tonic-gate return (DDI_FAILURE); 204*0Sstevel@tonic-gate } 205*0Sstevel@tonic-gate 206*0Sstevel@tonic-gate for (i = 0; i < MAXDEVS; i++) { 207*0Sstevel@tonic-gate rw_init(&sysmcache[i].dca_lock, NULL, RW_DRIVER, NULL); 208*0Sstevel@tonic-gate } 209*0Sstevel@tonic-gate 210*0Sstevel@tonic-gate /* set everything up .. */ 211*0Sstevel@tonic-gate bind_consadm_conf("/etc/consadm.conf"); 212*0Sstevel@tonic-gate sysm_dip = devi; 213*0Sstevel@tonic-gate return (DDI_SUCCESS); 214*0Sstevel@tonic-gate case DDI_SUSPEND: 215*0Sstevel@tonic-gate case DDI_PM_SUSPEND: 216*0Sstevel@tonic-gate return (DDI_SUCCESS); 217*0Sstevel@tonic-gate default: 218*0Sstevel@tonic-gate return (DDI_FAILURE); 219*0Sstevel@tonic-gate } 220*0Sstevel@tonic-gate } 221*0Sstevel@tonic-gate 222*0Sstevel@tonic-gate static int 223*0Sstevel@tonic-gate sysm_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 224*0Sstevel@tonic-gate { 225*0Sstevel@tonic-gate int i; 226*0Sstevel@tonic-gate 227*0Sstevel@tonic-gate switch (cmd) { 228*0Sstevel@tonic-gate case DDI_DETACH: 229*0Sstevel@tonic-gate ASSERT(sysm_dip == devi); 230*0Sstevel@tonic-gate 231*0Sstevel@tonic-gate if (dcvp) { 232*0Sstevel@tonic-gate (void) VOP_CLOSE(dcvp, FWRITE, 1, (offset_t)0, kcred); 233*0Sstevel@tonic-gate VN_RELE(dcvp); 234*0Sstevel@tonic-gate dcvp = NULL; 235*0Sstevel@tonic-gate } 236*0Sstevel@tonic-gate for (i = 0; i < MAXDEVS; i++) { 237*0Sstevel@tonic-gate if (sysmcache[i].dca_vp != NULL) { 238*0Sstevel@tonic-gate (void) VOP_CLOSE(sysmcache[i].dca_vp, 0, 239*0Sstevel@tonic-gate 1, (offset_t)0, 0); 240*0Sstevel@tonic-gate VN_RELE(sysmcache[i].dca_vp); 241*0Sstevel@tonic-gate } 242*0Sstevel@tonic-gate sysmcache[i].dca_vp = NULL; 243*0Sstevel@tonic-gate rw_destroy(&sysmcache[i].dca_lock); 244*0Sstevel@tonic-gate } 245*0Sstevel@tonic-gate 246*0Sstevel@tonic-gate ddi_remove_minor_node(devi, NULL); 247*0Sstevel@tonic-gate sysm_dip = NULL; 248*0Sstevel@tonic-gate return (DDI_SUCCESS); 249*0Sstevel@tonic-gate 250*0Sstevel@tonic-gate case DDI_SUSPEND: 251*0Sstevel@tonic-gate case DDI_PM_SUSPEND: 252*0Sstevel@tonic-gate return (DDI_SUCCESS); 253*0Sstevel@tonic-gate default: 254*0Sstevel@tonic-gate return (DDI_FAILURE); 255*0Sstevel@tonic-gate } 256*0Sstevel@tonic-gate 257*0Sstevel@tonic-gate } 258*0Sstevel@tonic-gate 259*0Sstevel@tonic-gate /* ARGSUSED */ 260*0Sstevel@tonic-gate static int 261*0Sstevel@tonic-gate sysm_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 262*0Sstevel@tonic-gate { 263*0Sstevel@tonic-gate int rval = DDI_FAILURE; 264*0Sstevel@tonic-gate minor_t instance; 265*0Sstevel@tonic-gate 266*0Sstevel@tonic-gate instance = getminor((dev_t)arg); 267*0Sstevel@tonic-gate 268*0Sstevel@tonic-gate switch (infocmd) { 269*0Sstevel@tonic-gate case DDI_INFO_DEVT2DEVINFO: 270*0Sstevel@tonic-gate if (sysm_dip != NULL && 271*0Sstevel@tonic-gate (instance == SYS_SYSMIN || instance == SYS_MSGMIN)) { 272*0Sstevel@tonic-gate *result = sysm_dip; 273*0Sstevel@tonic-gate rval = DDI_SUCCESS; 274*0Sstevel@tonic-gate } 275*0Sstevel@tonic-gate break; 276*0Sstevel@tonic-gate 277*0Sstevel@tonic-gate case DDI_INFO_DEVT2INSTANCE: 278*0Sstevel@tonic-gate if (instance == SYS_SYSMIN || instance == SYS_MSGMIN) { 279*0Sstevel@tonic-gate *result = NULL; 280*0Sstevel@tonic-gate rval = DDI_SUCCESS; 281*0Sstevel@tonic-gate } 282*0Sstevel@tonic-gate break; 283*0Sstevel@tonic-gate 284*0Sstevel@tonic-gate default: 285*0Sstevel@tonic-gate break; 286*0Sstevel@tonic-gate } 287*0Sstevel@tonic-gate 288*0Sstevel@tonic-gate return (rval); 289*0Sstevel@tonic-gate } 290*0Sstevel@tonic-gate 291*0Sstevel@tonic-gate /* 292*0Sstevel@tonic-gate * Parse the contents of the buffer, and bind the named 293*0Sstevel@tonic-gate * devices as auxiliary consoles using our own ioctl routine. 294*0Sstevel@tonic-gate * 295*0Sstevel@tonic-gate * Comments begin with '#' and are terminated only by a newline 296*0Sstevel@tonic-gate * Device names begin with a '/', and are terminated by a newline, 297*0Sstevel@tonic-gate * space, '#' or tab. 298*0Sstevel@tonic-gate */ 299*0Sstevel@tonic-gate static void 300*0Sstevel@tonic-gate parse_buffer(char *buf, ssize_t fsize) 301*0Sstevel@tonic-gate { 302*0Sstevel@tonic-gate char *ebuf = buf + fsize; 303*0Sstevel@tonic-gate char *devname = NULL; 304*0Sstevel@tonic-gate int eatcomments = 0; 305*0Sstevel@tonic-gate 306*0Sstevel@tonic-gate while (buf < ebuf) { 307*0Sstevel@tonic-gate if (eatcomments) { 308*0Sstevel@tonic-gate if (*buf++ == '\n') 309*0Sstevel@tonic-gate eatcomments = 0; 310*0Sstevel@tonic-gate continue; 311*0Sstevel@tonic-gate } 312*0Sstevel@tonic-gate switch (*buf) { 313*0Sstevel@tonic-gate case '/': 314*0Sstevel@tonic-gate if (devname == NULL) 315*0Sstevel@tonic-gate devname = buf; 316*0Sstevel@tonic-gate break; 317*0Sstevel@tonic-gate case '#': 318*0Sstevel@tonic-gate eatcomments = 1; 319*0Sstevel@tonic-gate /*FALLTHROUGH*/ 320*0Sstevel@tonic-gate case ' ': 321*0Sstevel@tonic-gate case '\t': 322*0Sstevel@tonic-gate case '\n': 323*0Sstevel@tonic-gate *buf = '\0'; 324*0Sstevel@tonic-gate if (devname == NULL) 325*0Sstevel@tonic-gate break; 326*0Sstevel@tonic-gate (void) sysmioctl(NODEV, CIOCSETCONSOLE, 327*0Sstevel@tonic-gate (intptr_t)devname, FNATIVE|FKIOCTL|FREAD|FWRITE, 328*0Sstevel@tonic-gate kcred, NULL); 329*0Sstevel@tonic-gate devname = NULL; 330*0Sstevel@tonic-gate break; 331*0Sstevel@tonic-gate default: 332*0Sstevel@tonic-gate break; 333*0Sstevel@tonic-gate } 334*0Sstevel@tonic-gate buf++; 335*0Sstevel@tonic-gate } 336*0Sstevel@tonic-gate } 337*0Sstevel@tonic-gate 338*0Sstevel@tonic-gate #define CNSADM_BYTES_MAX 2000 /* XXX nasty fixed size */ 339*0Sstevel@tonic-gate 340*0Sstevel@tonic-gate static void 341*0Sstevel@tonic-gate bind_consadm_conf(char *path) 342*0Sstevel@tonic-gate { 343*0Sstevel@tonic-gate struct vattr vattr; 344*0Sstevel@tonic-gate vnode_t *vp; 345*0Sstevel@tonic-gate void *buf; 346*0Sstevel@tonic-gate size_t size; 347*0Sstevel@tonic-gate ssize_t resid; 348*0Sstevel@tonic-gate int err = 0; 349*0Sstevel@tonic-gate 350*0Sstevel@tonic-gate if (vn_open(path, UIO_SYSSPACE, FREAD, 0, &vp, 0, 0) != 0) 351*0Sstevel@tonic-gate return; 352*0Sstevel@tonic-gate vattr.va_mask = AT_SIZE; 353*0Sstevel@tonic-gate if ((err = VOP_GETATTR(vp, &vattr, 0, kcred)) != 0) { 354*0Sstevel@tonic-gate cmn_err(CE_WARN, "sysmsg: getattr: '%s': error %d", 355*0Sstevel@tonic-gate path, err); 356*0Sstevel@tonic-gate goto closevp; 357*0Sstevel@tonic-gate } 358*0Sstevel@tonic-gate 359*0Sstevel@tonic-gate size = vattr.va_size > CNSADM_BYTES_MAX ? 360*0Sstevel@tonic-gate CNSADM_BYTES_MAX : (ssize_t)vattr.va_size; 361*0Sstevel@tonic-gate buf = kmem_alloc(size, KM_SLEEP); 362*0Sstevel@tonic-gate 363*0Sstevel@tonic-gate if ((err = vn_rdwr(UIO_READ, vp, buf, size, (offset_t)0, 364*0Sstevel@tonic-gate UIO_SYSSPACE, 0, (rlim64_t)0, kcred, &resid)) != 0) 365*0Sstevel@tonic-gate cmn_err(CE_WARN, "sysmsg: vn_rdwr: '%s': error %d", 366*0Sstevel@tonic-gate path, err); 367*0Sstevel@tonic-gate else 368*0Sstevel@tonic-gate parse_buffer(buf, size - resid); 369*0Sstevel@tonic-gate 370*0Sstevel@tonic-gate kmem_free(buf, size); 371*0Sstevel@tonic-gate closevp: 372*0Sstevel@tonic-gate (void) VOP_CLOSE(vp, FREAD, 1, (offset_t)0, kcred); 373*0Sstevel@tonic-gate VN_RELE(vp); 374*0Sstevel@tonic-gate } 375*0Sstevel@tonic-gate 376*0Sstevel@tonic-gate /* ARGSUSED */ 377*0Sstevel@tonic-gate static int 378*0Sstevel@tonic-gate sysmopen(dev_t *dev, int flag, int state, cred_t *cred) 379*0Sstevel@tonic-gate { 380*0Sstevel@tonic-gate int i; 381*0Sstevel@tonic-gate vnode_t *vp; 382*0Sstevel@tonic-gate minor_t instance; 383*0Sstevel@tonic-gate 384*0Sstevel@tonic-gate instance = getminor(*dev); 385*0Sstevel@tonic-gate 386*0Sstevel@tonic-gate if (state != OTYP_CHR || (instance != 0 && instance != 1)) 387*0Sstevel@tonic-gate return (ENXIO); 388*0Sstevel@tonic-gate 389*0Sstevel@tonic-gate mutex_enter(&dcvp_mutex); 390*0Sstevel@tonic-gate if ((dcvp == NULL) && (vn_open("/dev/console", 391*0Sstevel@tonic-gate UIO_SYSSPACE, FWRITE, 0, &dcvp, 0, 0) != 0)) { 392*0Sstevel@tonic-gate mutex_exit(&dcvp_mutex); 393*0Sstevel@tonic-gate return (ENXIO); 394*0Sstevel@tonic-gate } 395*0Sstevel@tonic-gate mutex_exit(&dcvp_mutex); 396*0Sstevel@tonic-gate 397*0Sstevel@tonic-gate for (i = 0; i < MAXDEVS; i++) { 398*0Sstevel@tonic-gate rw_enter(&sysmcache[i].dca_lock, RW_WRITER); 399*0Sstevel@tonic-gate if ((sysmcache[i].dca_flags & SYSM_ENABLED) && 400*0Sstevel@tonic-gate sysmcache[i].dca_vp == NULL) { 401*0Sstevel@tonic-gate /* 402*0Sstevel@tonic-gate * 4196476 - FTRUNC was causing E10K to return EINVAL 403*0Sstevel@tonic-gate * on open 404*0Sstevel@tonic-gate */ 405*0Sstevel@tonic-gate flag = flag & ~FTRUNC; 406*0Sstevel@tonic-gate /* 407*0Sstevel@tonic-gate * Open failures on the auxiliary consoles are 408*0Sstevel@tonic-gate * not returned because we don't care if some 409*0Sstevel@tonic-gate * subset get an error. We know the default console 410*0Sstevel@tonic-gate * is okay, and preserve the semantics of the 411*0Sstevel@tonic-gate * open for the default console. 412*0Sstevel@tonic-gate * Set NONBLOCK|NDELAY in case there's no carrier. 413*0Sstevel@tonic-gate */ 414*0Sstevel@tonic-gate if (vn_open(sysmcache[i].dca_name, UIO_SYSSPACE, 415*0Sstevel@tonic-gate flag | FNONBLOCK | FNDELAY, 0, &vp, 0, 0) == 0) 416*0Sstevel@tonic-gate sysmcache[i].dca_vp = vp; 417*0Sstevel@tonic-gate } 418*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 419*0Sstevel@tonic-gate } 420*0Sstevel@tonic-gate 421*0Sstevel@tonic-gate return (0); 422*0Sstevel@tonic-gate } 423*0Sstevel@tonic-gate 424*0Sstevel@tonic-gate /* ARGSUSED */ 425*0Sstevel@tonic-gate static int 426*0Sstevel@tonic-gate sysmclose(dev_t dev, int flag, int state, cred_t *cred) 427*0Sstevel@tonic-gate { 428*0Sstevel@tonic-gate int i; 429*0Sstevel@tonic-gate 430*0Sstevel@tonic-gate if (state != OTYP_CHR) 431*0Sstevel@tonic-gate return (ENXIO); 432*0Sstevel@tonic-gate 433*0Sstevel@tonic-gate /* 434*0Sstevel@tonic-gate * Close the auxiliary consoles, we're not concerned with 435*0Sstevel@tonic-gate * passing up the errors. 436*0Sstevel@tonic-gate */ 437*0Sstevel@tonic-gate for (i = 0; i < MAXDEVS; i++) { 438*0Sstevel@tonic-gate rw_enter(&sysmcache[i].dca_lock, RW_WRITER); 439*0Sstevel@tonic-gate if (sysmcache[i].dca_vp != NULL) { 440*0Sstevel@tonic-gate (void) VOP_CLOSE(sysmcache[i].dca_vp, flag, 441*0Sstevel@tonic-gate 1, (offset_t)0, cred); 442*0Sstevel@tonic-gate VN_RELE(sysmcache[i].dca_vp); 443*0Sstevel@tonic-gate sysmcache[i].dca_vp = NULL; 444*0Sstevel@tonic-gate } 445*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 446*0Sstevel@tonic-gate } 447*0Sstevel@tonic-gate 448*0Sstevel@tonic-gate return (0); 449*0Sstevel@tonic-gate } 450*0Sstevel@tonic-gate 451*0Sstevel@tonic-gate /* Reads occur only on the default console */ 452*0Sstevel@tonic-gate 453*0Sstevel@tonic-gate /* ARGSUSED */ 454*0Sstevel@tonic-gate static int 455*0Sstevel@tonic-gate sysmread(dev_t dev, struct uio *uio, cred_t *cred) 456*0Sstevel@tonic-gate { 457*0Sstevel@tonic-gate ASSERT(dcvp != NULL); 458*0Sstevel@tonic-gate return (VOP_READ(dcvp, uio, 0, cred, NULL)); 459*0Sstevel@tonic-gate } 460*0Sstevel@tonic-gate 461*0Sstevel@tonic-gate /* ARGSUSED */ 462*0Sstevel@tonic-gate static int 463*0Sstevel@tonic-gate sysmwrite(dev_t dev, struct uio *uio, cred_t *cred) 464*0Sstevel@tonic-gate { 465*0Sstevel@tonic-gate int i = 0; 466*0Sstevel@tonic-gate iovec_t uio_iov; 467*0Sstevel@tonic-gate struct uio tuio; 468*0Sstevel@tonic-gate 469*0Sstevel@tonic-gate ASSERT(dcvp != NULL); 470*0Sstevel@tonic-gate ASSERT(uio != NULL); 471*0Sstevel@tonic-gate 472*0Sstevel@tonic-gate for (i = 0; i < MAXDEVS; i++) { 473*0Sstevel@tonic-gate rw_enter(&sysmcache[i].dca_lock, RW_READER); 474*0Sstevel@tonic-gate if (sysmcache[i].dca_vp != NULL && 475*0Sstevel@tonic-gate (sysmcache[i].dca_flags & SYSM_ENABLED)) { 476*0Sstevel@tonic-gate tuio = *uio; 477*0Sstevel@tonic-gate uio_iov = *(uio->uio_iov); 478*0Sstevel@tonic-gate tuio.uio_iov = &uio_iov; 479*0Sstevel@tonic-gate (void) VOP_WRITE(sysmcache[i].dca_vp, &tuio, 0, cred, 480*0Sstevel@tonic-gate NULL); 481*0Sstevel@tonic-gate } 482*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 483*0Sstevel@tonic-gate } 484*0Sstevel@tonic-gate return (VOP_WRITE(dcvp, uio, 0, cred, NULL)); 485*0Sstevel@tonic-gate } 486*0Sstevel@tonic-gate 487*0Sstevel@tonic-gate /* ARGSUSED */ 488*0Sstevel@tonic-gate static int 489*0Sstevel@tonic-gate sysmioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cred, int *rvalp) 490*0Sstevel@tonic-gate { 491*0Sstevel@tonic-gate int rval = 0; 492*0Sstevel@tonic-gate int error = 0; 493*0Sstevel@tonic-gate size_t size = 0; 494*0Sstevel@tonic-gate int i; 495*0Sstevel@tonic-gate char *infop; 496*0Sstevel@tonic-gate char found = 0; 497*0Sstevel@tonic-gate dev_t newdevt = (dev_t)NODEV; /* because 0 == /dev/console */ 498*0Sstevel@tonic-gate vnode_t *vp; 499*0Sstevel@tonic-gate 500*0Sstevel@tonic-gate switch (cmd) { 501*0Sstevel@tonic-gate case CIOCGETCONSOLE: 502*0Sstevel@tonic-gate /* Sum over the number of enabled devices */ 503*0Sstevel@tonic-gate for (i = 0; i < MAXDEVS; i++) { 504*0Sstevel@tonic-gate if (sysmcache[i].dca_flags & SYSM_ENABLED) 505*0Sstevel@tonic-gate /* list is space separated, followed by NULL */ 506*0Sstevel@tonic-gate size += strlen(sysmcache[i].dca_name) + 1; 507*0Sstevel@tonic-gate } 508*0Sstevel@tonic-gate if (size == 0) 509*0Sstevel@tonic-gate return (0); 510*0Sstevel@tonic-gate break; 511*0Sstevel@tonic-gate case CIOCSETCONSOLE: 512*0Sstevel@tonic-gate case CIOCRMCONSOLE: 513*0Sstevel@tonic-gate size = sizeof (sysmcache[0].dca_name); 514*0Sstevel@tonic-gate break; 515*0Sstevel@tonic-gate case CIOCTTYCONSOLE: 516*0Sstevel@tonic-gate { 517*0Sstevel@tonic-gate dev_t d; 518*0Sstevel@tonic-gate dev32_t d32; 519*0Sstevel@tonic-gate extern dev_t rwsconsdev, rconsdev, uconsdev; 520*0Sstevel@tonic-gate proc_t *p; 521*0Sstevel@tonic-gate 522*0Sstevel@tonic-gate if (drv_getparm(UPROCP, &p) != 0) 523*0Sstevel@tonic-gate return (ENODEV); 524*0Sstevel@tonic-gate else 525*0Sstevel@tonic-gate d = cttydev(p); 526*0Sstevel@tonic-gate /* 527*0Sstevel@tonic-gate * If the controlling terminal is the real 528*0Sstevel@tonic-gate * or workstation console device, map to what the 529*0Sstevel@tonic-gate * user thinks is the console device. 530*0Sstevel@tonic-gate */ 531*0Sstevel@tonic-gate if (d == rwsconsdev || d == rconsdev) 532*0Sstevel@tonic-gate d = uconsdev; 533*0Sstevel@tonic-gate if ((flag & FMODELS) != FNATIVE) { 534*0Sstevel@tonic-gate if (!cmpldev(&d32, d)) 535*0Sstevel@tonic-gate return (EOVERFLOW); 536*0Sstevel@tonic-gate if (ddi_copyout(&d32, (caddr_t)arg, sizeof (d32), 537*0Sstevel@tonic-gate flag)) 538*0Sstevel@tonic-gate return (EFAULT); 539*0Sstevel@tonic-gate } else { 540*0Sstevel@tonic-gate if (ddi_copyout(&d, (caddr_t)arg, sizeof (d), flag)) 541*0Sstevel@tonic-gate return (EFAULT); 542*0Sstevel@tonic-gate } 543*0Sstevel@tonic-gate return (0); 544*0Sstevel@tonic-gate } 545*0Sstevel@tonic-gate default: 546*0Sstevel@tonic-gate /* everything else is sent to the console device */ 547*0Sstevel@tonic-gate return (VOP_IOCTL(dcvp, cmd, arg, flag, cred, rvalp)); 548*0Sstevel@tonic-gate } 549*0Sstevel@tonic-gate 550*0Sstevel@tonic-gate if ((rval = secpolicy_console(cred)) != 0) 551*0Sstevel@tonic-gate return (EPERM); 552*0Sstevel@tonic-gate 553*0Sstevel@tonic-gate infop = kmem_alloc(size, KM_SLEEP); 554*0Sstevel@tonic-gate if (flag & FKIOCTL) 555*0Sstevel@tonic-gate error = copystr((caddr_t)arg, infop, size, NULL); 556*0Sstevel@tonic-gate else 557*0Sstevel@tonic-gate error = copyinstr((caddr_t)arg, infop, size, NULL); 558*0Sstevel@tonic-gate 559*0Sstevel@tonic-gate if (error) { 560*0Sstevel@tonic-gate switch (cmd) { 561*0Sstevel@tonic-gate case CIOCGETCONSOLE: 562*0Sstevel@tonic-gate /* 563*0Sstevel@tonic-gate * If the buffer is null, then return a byte count 564*0Sstevel@tonic-gate * to user land. 565*0Sstevel@tonic-gate */ 566*0Sstevel@tonic-gate *rvalp = size; 567*0Sstevel@tonic-gate goto err_exit; 568*0Sstevel@tonic-gate default: 569*0Sstevel@tonic-gate rval = EFAULT; 570*0Sstevel@tonic-gate goto err_exit; 571*0Sstevel@tonic-gate } 572*0Sstevel@tonic-gate } 573*0Sstevel@tonic-gate 574*0Sstevel@tonic-gate if (infop[0] != NULL) { 575*0Sstevel@tonic-gate if ((rval = lookupname(infop, UIO_SYSSPACE, FOLLOW, 576*0Sstevel@tonic-gate NULLVPP, &vp)) == 0) { 577*0Sstevel@tonic-gate if (vp->v_type != VCHR) { 578*0Sstevel@tonic-gate VN_RELE(vp); 579*0Sstevel@tonic-gate rval = EINVAL; 580*0Sstevel@tonic-gate goto err_exit; 581*0Sstevel@tonic-gate } 582*0Sstevel@tonic-gate newdevt = vp->v_rdev; 583*0Sstevel@tonic-gate VN_RELE(vp); 584*0Sstevel@tonic-gate } else 585*0Sstevel@tonic-gate goto err_exit; 586*0Sstevel@tonic-gate } 587*0Sstevel@tonic-gate 588*0Sstevel@tonic-gate switch (cmd) { 589*0Sstevel@tonic-gate case CIOCGETCONSOLE: 590*0Sstevel@tonic-gate /* 591*0Sstevel@tonic-gate * Return the list of device names that are enabled. 592*0Sstevel@tonic-gate */ 593*0Sstevel@tonic-gate for (i = 0; i < MAXDEVS; i++) { 594*0Sstevel@tonic-gate rw_enter(&sysmcache[i].dca_lock, RW_READER); 595*0Sstevel@tonic-gate if (sysmcache[i].dca_flags & SYSM_ENABLED) { 596*0Sstevel@tonic-gate if (infop[0] != NULL) 597*0Sstevel@tonic-gate (void) strcat(infop, " "); 598*0Sstevel@tonic-gate (void) strcat(infop, sysmcache[i].dca_name); 599*0Sstevel@tonic-gate } 600*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 601*0Sstevel@tonic-gate } 602*0Sstevel@tonic-gate if (rval == 0 && copyoutstr(infop, (void *)arg, size, NULL)) 603*0Sstevel@tonic-gate rval = EFAULT; 604*0Sstevel@tonic-gate break; 605*0Sstevel@tonic-gate 606*0Sstevel@tonic-gate case CIOCSETCONSOLE: 607*0Sstevel@tonic-gate if ((rval = checkarg(newdevt)) != 0) 608*0Sstevel@tonic-gate break; 609*0Sstevel@tonic-gate /* 610*0Sstevel@tonic-gate * The device does not have to be open or disabled to 611*0Sstevel@tonic-gate * perform the set console. 612*0Sstevel@tonic-gate */ 613*0Sstevel@tonic-gate for (i = 0; i < MAXDEVS; i++) { 614*0Sstevel@tonic-gate rw_enter(&sysmcache[i].dca_lock, RW_WRITER); 615*0Sstevel@tonic-gate if (sysmcache[i].dca_devt == newdevt && 616*0Sstevel@tonic-gate (sysmcache[i].dca_flags & SYSM_ENABLED)) { 617*0Sstevel@tonic-gate (void) strcpy(sysmcache[i].dca_name, infop); 618*0Sstevel@tonic-gate rval = EEXIST; 619*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 620*0Sstevel@tonic-gate break; 621*0Sstevel@tonic-gate } else if (sysmcache[i].dca_devt == newdevt && 622*0Sstevel@tonic-gate sysmcache[i].dca_flags == SYSM_DISABLED) { 623*0Sstevel@tonic-gate sysmcache[i].dca_flags |= SYSM_ENABLED; 624*0Sstevel@tonic-gate (void) strcpy(sysmcache[i].dca_name, infop); 625*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 626*0Sstevel@tonic-gate found = 1; 627*0Sstevel@tonic-gate break; 628*0Sstevel@tonic-gate } else if (sysmcache[i].dca_devt == 0) { 629*0Sstevel@tonic-gate ASSERT(sysmcache[i].dca_vp == NULL && 630*0Sstevel@tonic-gate sysmcache[i].dca_flags == SYSM_DISABLED); 631*0Sstevel@tonic-gate (void) strcpy(sysmcache[i].dca_name, infop); 632*0Sstevel@tonic-gate sysmcache[i].dca_flags = SYSM_ENABLED; 633*0Sstevel@tonic-gate sysmcache[i].dca_devt = newdevt; 634*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 635*0Sstevel@tonic-gate found = 1; 636*0Sstevel@tonic-gate break; 637*0Sstevel@tonic-gate } 638*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 639*0Sstevel@tonic-gate } 640*0Sstevel@tonic-gate if (found == 0 && rval == 0) 641*0Sstevel@tonic-gate rval = ENOENT; 642*0Sstevel@tonic-gate break; 643*0Sstevel@tonic-gate 644*0Sstevel@tonic-gate case CIOCRMCONSOLE: 645*0Sstevel@tonic-gate for (i = 0; i < MAXDEVS; i++) { 646*0Sstevel@tonic-gate rw_enter(&sysmcache[i].dca_lock, RW_WRITER); 647*0Sstevel@tonic-gate if (sysmcache[i].dca_devt == newdevt) { 648*0Sstevel@tonic-gate sysmcache[i].dca_flags = SYSM_DISABLED; 649*0Sstevel@tonic-gate sysmcache[i].dca_name[0] = '\0'; 650*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 651*0Sstevel@tonic-gate found = 1; 652*0Sstevel@tonic-gate break; 653*0Sstevel@tonic-gate } 654*0Sstevel@tonic-gate rw_exit(&sysmcache[i].dca_lock); 655*0Sstevel@tonic-gate } 656*0Sstevel@tonic-gate if (found == 0) 657*0Sstevel@tonic-gate rval = ENOENT; 658*0Sstevel@tonic-gate break; 659*0Sstevel@tonic-gate 660*0Sstevel@tonic-gate default: 661*0Sstevel@tonic-gate break; 662*0Sstevel@tonic-gate } 663*0Sstevel@tonic-gate 664*0Sstevel@tonic-gate err_exit: 665*0Sstevel@tonic-gate kmem_free(infop, size); 666*0Sstevel@tonic-gate return (rval); 667*0Sstevel@tonic-gate } 668*0Sstevel@tonic-gate 669*0Sstevel@tonic-gate /* As with the read, we poll only the default console */ 670*0Sstevel@tonic-gate 671*0Sstevel@tonic-gate /* ARGSUSED */ 672*0Sstevel@tonic-gate static int 673*0Sstevel@tonic-gate sysmpoll(dev_t dev, short events, int anyyet, short *reventsp, 674*0Sstevel@tonic-gate struct pollhead **phpp) 675*0Sstevel@tonic-gate { 676*0Sstevel@tonic-gate return (VOP_POLL(dcvp, events, anyyet, reventsp, phpp)); 677*0Sstevel@tonic-gate } 678*0Sstevel@tonic-gate 679*0Sstevel@tonic-gate /* Sanity check that the device is good */ 680*0Sstevel@tonic-gate static int 681*0Sstevel@tonic-gate checkarg(dev_t devt) 682*0Sstevel@tonic-gate { 683*0Sstevel@tonic-gate int rval = 0; 684*0Sstevel@tonic-gate vnode_t *vp; 685*0Sstevel@tonic-gate extern dev_t rwsconsdev, rconsdev, uconsdev; 686*0Sstevel@tonic-gate 687*0Sstevel@tonic-gate if (devt == rconsdev || devt == rwsconsdev || devt == uconsdev) { 688*0Sstevel@tonic-gate rval = EBUSY; 689*0Sstevel@tonic-gate goto err_exit; 690*0Sstevel@tonic-gate } 691*0Sstevel@tonic-gate if ((rval = lookupname("/dev/sysmsg", UIO_SYSSPACE, FOLLOW, 692*0Sstevel@tonic-gate NULLVPP, &vp)) == 0) { 693*0Sstevel@tonic-gate if (devt == vp->v_rdev) { 694*0Sstevel@tonic-gate VN_RELE(vp); 695*0Sstevel@tonic-gate rval = EINVAL; 696*0Sstevel@tonic-gate goto err_exit; 697*0Sstevel@tonic-gate } 698*0Sstevel@tonic-gate VN_RELE(vp); 699*0Sstevel@tonic-gate } 700*0Sstevel@tonic-gate if ((rval = lookupname("/dev/msglog", UIO_SYSSPACE, FOLLOW, 701*0Sstevel@tonic-gate NULLVPP, &vp)) == 0) { 702*0Sstevel@tonic-gate if (devt == vp->v_rdev) { 703*0Sstevel@tonic-gate VN_RELE(vp); 704*0Sstevel@tonic-gate rval = EINVAL; 705*0Sstevel@tonic-gate goto err_exit; 706*0Sstevel@tonic-gate } 707*0Sstevel@tonic-gate VN_RELE(vp); 708*0Sstevel@tonic-gate } 709*0Sstevel@tonic-gate 710*0Sstevel@tonic-gate err_exit: 711*0Sstevel@tonic-gate return (rval); 712*0Sstevel@tonic-gate } 713