| kern_cons.c (50477) | kern_cons.c (51654) |
|---|---|
| 1/* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1991 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. --- 22 unchanged lines hidden (view full) --- 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: @(#)cons.c 7.2 (Berkeley) 5/9/91 | 1/* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1991 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. --- 22 unchanged lines hidden (view full) --- 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: @(#)cons.c 7.2 (Berkeley) 5/9/91 |
| 39 * $FreeBSD: head/sys/kern/tty_cons.c 50477 1999-08-28 01:08:13Z peter $ | 39 * $FreeBSD: head/sys/kern/tty_cons.c 51654 1999-09-25 16:21:39Z phk $ |
| 40 */ 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/conf.h> 45#include <sys/kernel.h> 46#include <sys/reboot.h> 47#include <sys/sysctl.h> --- 47 unchanged lines hidden (view full) --- 95 */ 96 97static u_char cn_is_open; /* nonzero if logical console is open */ 98static int openmode, openflag; /* how /dev/console was openned */ 99static u_char cn_phys_is_open; /* nonzero if physical device is open */ 100static d_close_t *cn_phys_close; /* physical device close function */ 101static d_open_t *cn_phys_open; /* physical device open function */ 102struct consdev *cn_tab; /* physical console device info */ | 40 */ 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/conf.h> 45#include <sys/kernel.h> 46#include <sys/reboot.h> 47#include <sys/sysctl.h> --- 47 unchanged lines hidden (view full) --- 95 */ 96 97static u_char cn_is_open; /* nonzero if logical console is open */ 98static int openmode, openflag; /* how /dev/console was openned */ 99static u_char cn_phys_is_open; /* nonzero if physical device is open */ 100static d_close_t *cn_phys_close; /* physical device close function */ 101static d_open_t *cn_phys_open; /* physical device open function */ 102struct consdev *cn_tab; /* physical console device info */ |
| 103static struct tty *cn_tp; /* physical console tty struct */ | |
| 104static dev_t condev_t; /* represents the device private info */ 105 106CONS_DRIVER(cons, NULL, NULL, NULL, NULL, NULL, NULL); 107 108void 109cninit() 110{ 111 struct consdev **list, *best_cp, *cp; --- 58 unchanged lines hidden (view full) --- 170 /* 171 * Hook the open and close functions. 172 */ 173 cdp = devsw(cn_tab->cn_dev); 174 cn_phys_close = cdp->d_close; 175 cdp->d_close = cnclose; 176 cn_phys_open = cdp->d_open; 177 cdp->d_open = cnopen; | 103static dev_t condev_t; /* represents the device private info */ 104 105CONS_DRIVER(cons, NULL, NULL, NULL, NULL, NULL, NULL); 106 107void 108cninit() 109{ 110 struct consdev **list, *best_cp, *cp; --- 58 unchanged lines hidden (view full) --- 169 /* 170 * Hook the open and close functions. 171 */ 172 cdp = devsw(cn_tab->cn_dev); 173 cn_phys_close = cdp->d_close; 174 cdp->d_close = cnclose; 175 cn_phys_open = cdp->d_open; 176 cdp->d_open = cnopen; |
| 178 cn_tp = (*cdp->d_devtotty)(cn_tab->cn_dev); | |
| 179 cn_dev_t = cn_tab->cn_dev; 180 cn_udev_t = dev2udev(cn_dev_t); 181} 182 183static void 184cnuninit(void) 185{ 186 struct cdevsw *cdp; --- 4 unchanged lines hidden (view full) --- 191 /* 192 * Unhook the open and close functions. 193 */ 194 cdp = devsw(cn_tab->cn_dev); 195 cdp->d_close = cn_phys_close; 196 cn_phys_close = NULL; 197 cdp->d_open = cn_phys_open; 198 cn_phys_open = NULL; | 177 cn_dev_t = cn_tab->cn_dev; 178 cn_udev_t = dev2udev(cn_dev_t); 179} 180 181static void 182cnuninit(void) 183{ 184 struct cdevsw *cdp; --- 4 unchanged lines hidden (view full) --- 189 /* 190 * Unhook the open and close functions. 191 */ 192 cdp = devsw(cn_tab->cn_dev); 193 cdp->d_close = cn_phys_close; 194 cn_phys_close = NULL; 195 cdp->d_open = cn_phys_open; 196 cn_phys_open = NULL; |
| 199 cn_tp = NULL; | |
| 200 cn_dev_t = NODEV; 201 cn_udev_t = NOUDEV; 202} 203 204/* 205 * User has changed the state of the console muting. 206 * This may require us to open or close the device in question. 207 */ --- 68 unchanged lines hidden (view full) --- 276 */ 277 if (dev == cndev) 278 cn_phys_is_open = 1; 279 else if (physdev == cndev) { 280 openmode = mode; 281 openflag = flag; 282 cn_is_open = 1; 283 } | 197 cn_dev_t = NODEV; 198 cn_udev_t = NOUDEV; 199} 200 201/* 202 * User has changed the state of the console muting. 203 * This may require us to open or close the device in question. 204 */ --- 68 unchanged lines hidden (view full) --- 273 */ 274 if (dev == cndev) 275 cn_phys_is_open = 1; 276 else if (physdev == cndev) { 277 openmode = mode; 278 openflag = flag; 279 cn_is_open = 1; 280 } |
| 281 dev->si_tty = physdev->si_tty; |
|
| 284 } 285 return (retval); 286} 287 288static int 289cnclose(dev, flag, mode, p) 290 dev_t dev; 291 int flag, mode; 292 struct proc *p; 293{ 294 dev_t cndev; | 282 } 283 return (retval); 284} 285 286static int 287cnclose(dev, flag, mode, p) 288 dev_t dev; 289 int flag, mode; 290 struct proc *p; 291{ 292 dev_t cndev; |
| 293 struct tty *cn_tp; |
|
| 295 296 if (cn_tab == NULL) 297 return (0); 298 cndev = cn_tab->cn_dev; | 294 295 if (cn_tab == NULL) 296 return (0); 297 cndev = cn_tab->cn_dev; |
| 298 cn_tp = cndev->si_tty; |
|
| 299 /* 300 * act appropriatly depending on whether it's /dev/console 301 * or the pysical device (e.g. /dev/sio) that's being closed. 302 * in either case, don't actually close the device unless 303 * both are closed. 304 */ 305 if (dev == cndev) { 306 /* the physical device is about to be closed */ --- 136 unchanged lines hidden --- | 299 /* 300 * act appropriatly depending on whether it's /dev/console 301 * or the pysical device (e.g. /dev/sio) that's being closed. 302 * in either case, don't actually close the device unless 303 * both are closed. 304 */ 305 if (dev == cndev) { 306 /* the physical device is about to be closed */ --- 136 unchanged lines hidden --- |