Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Copyright (C) 1992 obz under the linux copyright |
| 3 | * |
| 4 | * Dynamic diacritical handling - aeb@cwi.nl - Dec 1993 |
| 5 | * Dynamic keymap and string allocation - aeb@cwi.nl - May 1994 |
| 6 | * Restrict VT switching via ioctl() - grif@cs.ucr.edu - Dec 1995 |
| 7 | * Some code moved for less code duplication - Andi Kleen - Mar 1997 |
| 8 | * Check put/get_user, cleanups - acme@conectiva.com.br - Jun 2001 |
| 9 | */ |
| 10 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | #include <linux/types.h> |
| 12 | #include <linux/errno.h> |
| 13 | #include <linux/sched.h> |
| 14 | #include <linux/tty.h> |
| 15 | #include <linux/timer.h> |
| 16 | #include <linux/kernel.h> |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 17 | #include <linux/compat.h> |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 18 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/kd.h> |
| 20 | #include <linux/vt.h> |
| 21 | #include <linux/string.h> |
| 22 | #include <linux/slab.h> |
| 23 | #include <linux/major.h> |
| 24 | #include <linux/fs.h> |
| 25 | #include <linux/console.h> |
Samuel Thibault | 04c7197 | 2007-10-16 23:27:04 -0700 | [diff] [blame] | 26 | #include <linux/consolemap.h> |
Jesper Juhl | 7ed20e1 | 2005-05-01 08:59:14 -0700 | [diff] [blame] | 27 | #include <linux/signal.h> |
Emmanuel Colbus | bcc8ca0 | 2005-06-28 20:44:49 -0700 | [diff] [blame] | 28 | #include <linux/timex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | #include <asm/io.h> |
| 31 | #include <asm/uaccess.h> |
| 32 | |
| 33 | #include <linux/kbd_kern.h> |
| 34 | #include <linux/vt_kern.h> |
| 35 | #include <linux/kbd_diacr.h> |
| 36 | #include <linux/selection.h> |
| 37 | |
Andrew Johnson | b257bc0 | 2007-03-16 13:38:24 -0800 | [diff] [blame] | 38 | char vt_dont_switch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | extern struct tty_driver *console_driver; |
| 40 | |
| 41 | #define VT_IS_IN_USE(i) (console_driver->ttys[i] && console_driver->ttys[i]->count) |
| 42 | #define VT_BUSY(i) (VT_IS_IN_USE(i) || i == fg_console || vc_cons[i].d == sel_cons) |
| 43 | |
| 44 | /* |
| 45 | * Console (vt and kd) routines, as defined by USL SVR4 manual, and by |
| 46 | * experimentation and study of X386 SYSV handling. |
| 47 | * |
| 48 | * One point of difference: SYSV vt's are /dev/vtX, which X >= 0, and |
| 49 | * /dev/console is a separate ttyp. Under Linux, /dev/tty0 is /dev/console, |
| 50 | * and the vc start at /dev/ttyX, X >= 1. We maintain that here, so we will |
| 51 | * always treat our set of vt as numbered 1..MAX_NR_CONSOLES (corresponding to |
| 52 | * ttys 0..MAX_NR_CONSOLES-1). Explicitly naming VT 0 is illegal, but using |
| 53 | * /dev/tty0 (fg_console) as a target is legal, since an implicit aliasing |
| 54 | * to the current console is done by the main ioctl code. |
| 55 | */ |
| 56 | |
| 57 | #ifdef CONFIG_X86 |
| 58 | #include <linux/syscalls.h> |
| 59 | #endif |
| 60 | |
| 61 | static void complete_change_console(struct vc_data *vc); |
| 62 | |
| 63 | /* |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 64 | * User space VT_EVENT handlers |
| 65 | */ |
| 66 | |
| 67 | struct vt_event_wait { |
| 68 | struct list_head list; |
| 69 | struct vt_event event; |
| 70 | int done; |
| 71 | }; |
| 72 | |
| 73 | static LIST_HEAD(vt_events); |
| 74 | static DEFINE_SPINLOCK(vt_event_lock); |
| 75 | static DECLARE_WAIT_QUEUE_HEAD(vt_event_waitqueue); |
| 76 | |
| 77 | /** |
| 78 | * vt_event_post |
| 79 | * @event: the event that occurred |
| 80 | * @old: old console |
| 81 | * @new: new console |
| 82 | * |
| 83 | * Post an VT event to interested VT handlers |
| 84 | */ |
| 85 | |
| 86 | void vt_event_post(unsigned int event, unsigned int old, unsigned int new) |
| 87 | { |
| 88 | struct list_head *pos, *head; |
| 89 | unsigned long flags; |
| 90 | int wake = 0; |
| 91 | |
| 92 | spin_lock_irqsave(&vt_event_lock, flags); |
| 93 | head = &vt_events; |
| 94 | |
| 95 | list_for_each(pos, head) { |
| 96 | struct vt_event_wait *ve = list_entry(pos, |
| 97 | struct vt_event_wait, list); |
| 98 | if (!(ve->event.event & event)) |
| 99 | continue; |
| 100 | ve->event.event = event; |
| 101 | /* kernel view is consoles 0..n-1, user space view is |
| 102 | console 1..n with 0 meaning current, so we must bias */ |
Alan Cox | 308efab | 2009-11-19 13:30:36 +0000 | [diff] [blame] | 103 | ve->event.oldev = old + 1; |
| 104 | ve->event.newev = new + 1; |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 105 | wake = 1; |
| 106 | ve->done = 1; |
| 107 | } |
| 108 | spin_unlock_irqrestore(&vt_event_lock, flags); |
| 109 | if (wake) |
| 110 | wake_up_interruptible(&vt_event_waitqueue); |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * vt_event_wait - wait for an event |
| 115 | * @vw: our event |
| 116 | * |
| 117 | * Waits for an event to occur which completes our vt_event_wait |
| 118 | * structure. On return the structure has wv->done set to 1 for success |
| 119 | * or 0 if some event such as a signal ended the wait. |
| 120 | */ |
| 121 | |
| 122 | static void vt_event_wait(struct vt_event_wait *vw) |
| 123 | { |
| 124 | unsigned long flags; |
| 125 | /* Prepare the event */ |
| 126 | INIT_LIST_HEAD(&vw->list); |
| 127 | vw->done = 0; |
| 128 | /* Queue our event */ |
| 129 | spin_lock_irqsave(&vt_event_lock, flags); |
| 130 | list_add(&vw->list, &vt_events); |
| 131 | spin_unlock_irqrestore(&vt_event_lock, flags); |
| 132 | /* Wait for it to pass */ |
Arnd Bergmann | be1bc28 | 2010-06-01 22:53:05 +0200 | [diff] [blame] | 133 | wait_event_interruptible_tty(vt_event_waitqueue, vw->done); |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 134 | /* Dequeue it */ |
| 135 | spin_lock_irqsave(&vt_event_lock, flags); |
| 136 | list_del(&vw->list); |
| 137 | spin_unlock_irqrestore(&vt_event_lock, flags); |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * vt_event_wait_ioctl - event ioctl handler |
| 142 | * @arg: argument to ioctl |
| 143 | * |
| 144 | * Implement the VT_WAITEVENT ioctl using the VT event interface |
| 145 | */ |
| 146 | |
| 147 | static int vt_event_wait_ioctl(struct vt_event __user *event) |
| 148 | { |
| 149 | struct vt_event_wait vw; |
| 150 | |
| 151 | if (copy_from_user(&vw.event, event, sizeof(struct vt_event))) |
| 152 | return -EFAULT; |
| 153 | /* Highest supported event for now */ |
| 154 | if (vw.event.event & ~VT_MAX_EVENT) |
| 155 | return -EINVAL; |
| 156 | |
| 157 | vt_event_wait(&vw); |
| 158 | /* If it occurred report it */ |
| 159 | if (vw.done) { |
| 160 | if (copy_to_user(event, &vw.event, sizeof(struct vt_event))) |
| 161 | return -EFAULT; |
| 162 | return 0; |
| 163 | } |
| 164 | return -EINTR; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * vt_waitactive - active console wait |
| 169 | * @event: event code |
| 170 | * @n: new console |
| 171 | * |
| 172 | * Helper for event waits. Used to implement the legacy |
| 173 | * event waiting ioctls in terms of events |
| 174 | */ |
| 175 | |
| 176 | int vt_waitactive(int n) |
| 177 | { |
| 178 | struct vt_event_wait vw; |
| 179 | do { |
| 180 | if (n == fg_console + 1) |
| 181 | break; |
| 182 | vw.event.event = VT_EVENT_SWITCH; |
| 183 | vt_event_wait(&vw); |
| 184 | if (vw.done == 0) |
| 185 | return -EINTR; |
Alan Cox | 308efab | 2009-11-19 13:30:36 +0000 | [diff] [blame] | 186 | } while (vw.event.newev != n); |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | * these are the valid i/o ports we're allowed to change. they map all the |
| 192 | * video ports |
| 193 | */ |
| 194 | #define GPFIRST 0x3b4 |
| 195 | #define GPLAST 0x3df |
| 196 | #define GPNUM (GPLAST - GPFIRST + 1) |
| 197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
| 200 | static inline int |
| 201 | do_fontx_ioctl(int cmd, struct consolefontdesc __user *user_cfd, int perm, struct console_font_op *op) |
| 202 | { |
| 203 | struct consolefontdesc cfdarg; |
| 204 | int i; |
| 205 | |
| 206 | if (copy_from_user(&cfdarg, user_cfd, sizeof(struct consolefontdesc))) |
| 207 | return -EFAULT; |
| 208 | |
| 209 | switch (cmd) { |
| 210 | case PIO_FONTX: |
| 211 | if (!perm) |
| 212 | return -EPERM; |
| 213 | op->op = KD_FONT_OP_SET; |
| 214 | op->flags = KD_FONT_FLAG_OLD; |
| 215 | op->width = 8; |
| 216 | op->height = cfdarg.charheight; |
| 217 | op->charcount = cfdarg.charcount; |
| 218 | op->data = cfdarg.chardata; |
| 219 | return con_font_op(vc_cons[fg_console].d, op); |
| 220 | case GIO_FONTX: { |
| 221 | op->op = KD_FONT_OP_GET; |
| 222 | op->flags = KD_FONT_FLAG_OLD; |
| 223 | op->width = 8; |
| 224 | op->height = cfdarg.charheight; |
| 225 | op->charcount = cfdarg.charcount; |
| 226 | op->data = cfdarg.chardata; |
| 227 | i = con_font_op(vc_cons[fg_console].d, op); |
| 228 | if (i) |
| 229 | return i; |
| 230 | cfdarg.charheight = op->height; |
| 231 | cfdarg.charcount = op->charcount; |
| 232 | if (copy_to_user(user_cfd, &cfdarg, sizeof(struct consolefontdesc))) |
| 233 | return -EFAULT; |
| 234 | return 0; |
| 235 | } |
| 236 | } |
| 237 | return -EINVAL; |
| 238 | } |
| 239 | |
| 240 | static inline int |
| 241 | do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud, int perm, struct vc_data *vc) |
| 242 | { |
| 243 | struct unimapdesc tmp; |
| 244 | |
| 245 | if (copy_from_user(&tmp, user_ud, sizeof tmp)) |
| 246 | return -EFAULT; |
| 247 | if (tmp.entries) |
| 248 | if (!access_ok(VERIFY_WRITE, tmp.entries, |
| 249 | tmp.entry_ct*sizeof(struct unipair))) |
| 250 | return -EFAULT; |
| 251 | switch (cmd) { |
| 252 | case PIO_UNIMAP: |
| 253 | if (!perm) |
| 254 | return -EPERM; |
| 255 | return con_set_unimap(vc, tmp.entry_ct, tmp.entries); |
| 256 | case GIO_UNIMAP: |
| 257 | if (!perm && fg_console != vc->vc_num) |
| 258 | return -EPERM; |
| 259 | return con_get_unimap(vc, tmp.entry_ct, &(user_ud->entry_ct), tmp.entries); |
| 260 | } |
| 261 | return 0; |
| 262 | } |
| 263 | |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 264 | |
| 265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | /* |
| 267 | * We handle the console-specific ioctl's here. We allow the |
| 268 | * capability to modify any console, not just the fg_console. |
| 269 | */ |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 270 | int vt_ioctl(struct tty_struct *tty, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | unsigned int cmd, unsigned long arg) |
| 272 | { |
Alan Cox | c9f19e9 | 2009-01-02 13:47:26 +0000 | [diff] [blame] | 273 | struct vc_data *vc = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | struct console_font_op op; /* used in multiple places here */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | unsigned int console; |
| 276 | unsigned char ucval; |
Graham Gower | 1e0ad28 | 2010-10-27 15:33:00 -0700 | [diff] [blame] | 277 | unsigned int uival; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | void __user *up = (void __user *)arg; |
| 279 | int i, perm; |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 280 | int ret = 0; |
| 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | console = vc->vc_num; |
| 283 | |
Arnd Bergmann | ec79d60 | 2010-06-01 22:53:01 +0200 | [diff] [blame] | 284 | tty_lock(); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 285 | |
| 286 | if (!vc_cons_allocated(console)) { /* impossible? */ |
| 287 | ret = -ENOIOCTLCMD; |
| 288 | goto out; |
| 289 | } |
| 290 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | |
| 292 | /* |
| 293 | * To have permissions to do most of the vt ioctls, we either have |
| 294 | * to be the owner of the tty, or have CAP_SYS_TTY_CONFIG. |
| 295 | */ |
| 296 | perm = 0; |
| 297 | if (current->signal->tty == tty || capable(CAP_SYS_TTY_CONFIG)) |
| 298 | perm = 1; |
| 299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | switch (cmd) { |
Alan Cox | e688510 | 2008-10-13 10:36:40 +0100 | [diff] [blame] | 301 | case TIOCLINUX: |
Jiri Slaby | a115902 | 2009-06-22 18:42:18 +0100 | [diff] [blame] | 302 | ret = tioclinux(tty, arg); |
| 303 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | case KIOCSOUND: |
| 305 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 306 | goto eperm; |
Arnd Bergmann | 2c4e967 | 2010-08-28 20:35:17 -0700 | [diff] [blame] | 307 | /* |
| 308 | * The use of PIT_TICK_RATE is historic, it used to be |
| 309 | * the platform-dependent CLOCK_TICK_RATE between 2.6.12 |
| 310 | * and 2.6.36, which was a minor but unfortunate ABI |
| 311 | * change. |
| 312 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | if (arg) |
Arnd Bergmann | 2c4e967 | 2010-08-28 20:35:17 -0700 | [diff] [blame] | 314 | arg = PIT_TICK_RATE / arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | kd_mksound(arg, 0); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 316 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
| 318 | case KDMKTONE: |
| 319 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 320 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | { |
| 322 | unsigned int ticks, count; |
| 323 | |
| 324 | /* |
| 325 | * Generate the tone for the appropriate number of ticks. |
| 326 | * If the time is zero, turn off sound ourselves. |
| 327 | */ |
| 328 | ticks = HZ * ((arg >> 16) & 0xffff) / 1000; |
| 329 | count = ticks ? (arg & 0xffff) : 0; |
| 330 | if (count) |
Arnd Bergmann | 2c4e967 | 2010-08-28 20:35:17 -0700 | [diff] [blame] | 331 | count = PIT_TICK_RATE / count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | kd_mksound(count, ticks); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 333 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | case KDGKBTYPE: |
| 337 | /* |
| 338 | * this is naive. |
| 339 | */ |
| 340 | ucval = KB_101; |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 341 | ret = put_user(ucval, (char __user *)arg); |
| 342 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
| 344 | /* |
| 345 | * These cannot be implemented on any machine that implements |
| 346 | * ioperm() in user level (such as Alpha PCs) or not at all. |
| 347 | * |
| 348 | * XXX: you should never use these, just call ioperm directly.. |
| 349 | */ |
| 350 | #ifdef CONFIG_X86 |
| 351 | case KDADDIO: |
| 352 | case KDDELIO: |
| 353 | /* |
| 354 | * KDADDIO and KDDELIO may be able to add ports beyond what |
| 355 | * we reject here, but to be safe... |
| 356 | */ |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 357 | if (arg < GPFIRST || arg > GPLAST) { |
| 358 | ret = -EINVAL; |
| 359 | break; |
| 360 | } |
| 361 | ret = sys_ioperm(arg, 1, (cmd == KDADDIO)) ? -ENXIO : 0; |
| 362 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
| 364 | case KDENABIO: |
| 365 | case KDDISABIO: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 366 | ret = sys_ioperm(GPFIRST, GPNUM, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | (cmd == KDENABIO)) ? -ENXIO : 0; |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 368 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | #endif |
| 370 | |
| 371 | /* Linux m68k/i386 interface for setting the keyboard delay/repeat rate */ |
| 372 | |
| 373 | case KDKBDREP: |
| 374 | { |
| 375 | struct kbd_repeat kbrep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
| 377 | if (!capable(CAP_SYS_TTY_CONFIG)) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 378 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 380 | if (copy_from_user(&kbrep, up, sizeof(struct kbd_repeat))) { |
| 381 | ret = -EFAULT; |
| 382 | break; |
| 383 | } |
| 384 | ret = kbd_rate(&kbrep); |
| 385 | if (ret) |
| 386 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | if (copy_to_user(up, &kbrep, sizeof(struct kbd_repeat))) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 388 | ret = -EFAULT; |
| 389 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | } |
| 391 | |
| 392 | case KDSETMODE: |
| 393 | /* |
| 394 | * currently, setting the mode from KD_TEXT to KD_GRAPHICS |
| 395 | * doesn't do a whole lot. i'm not sure if it should do any |
| 396 | * restoration of modes or what... |
| 397 | * |
| 398 | * XXX It should at least call into the driver, fbdev's definitely |
| 399 | * need to restore their engine state. --BenH |
| 400 | */ |
| 401 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 402 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | switch (arg) { |
| 404 | case KD_GRAPHICS: |
| 405 | break; |
| 406 | case KD_TEXT0: |
| 407 | case KD_TEXT1: |
| 408 | arg = KD_TEXT; |
| 409 | case KD_TEXT: |
| 410 | break; |
| 411 | default: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 412 | ret = -EINVAL; |
| 413 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | } |
| 415 | if (vc->vc_mode == (unsigned char) arg) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 416 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | vc->vc_mode = (unsigned char) arg; |
| 418 | if (console != fg_console) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 419 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | /* |
| 421 | * explicitly blank/unblank the screen if switching modes |
| 422 | */ |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 423 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | if (arg == KD_TEXT) |
| 425 | do_unblank_screen(1); |
| 426 | else |
| 427 | do_blank_screen(1); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 428 | console_unlock(); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 429 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | |
| 431 | case KDGETMODE: |
Graham Gower | 1e0ad28 | 2010-10-27 15:33:00 -0700 | [diff] [blame] | 432 | uival = vc->vc_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | goto setint; |
| 434 | |
| 435 | case KDMAPDISP: |
| 436 | case KDUNMAPDISP: |
| 437 | /* |
| 438 | * these work like a combination of mmap and KDENABIO. |
| 439 | * this could be easily finished. |
| 440 | */ |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 441 | ret = -EINVAL; |
| 442 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
| 444 | case KDSKBMODE: |
| 445 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 446 | goto eperm; |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 447 | ret = vt_do_kdskbmode(console, arg); |
| 448 | if (ret == 0) |
| 449 | tty_ldisc_flush(tty); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 450 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
| 452 | case KDGKBMODE: |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 453 | uival = vt_do_kdgkbmode(console); |
| 454 | ret = put_user(uival, (int __user *)arg); |
| 455 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | |
| 457 | /* this could be folded into KDSKBMODE, but for compatibility |
| 458 | reasons it is not so easy to fold KDGKBMETA into KDGKBMODE */ |
| 459 | case KDSKBMETA: |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 460 | ret = vt_do_kdskbmeta(console, arg); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 461 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
| 463 | case KDGKBMETA: |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 464 | /* FIXME: should review whether this is worth locking */ |
| 465 | uival = vt_do_kdgkbmeta(console); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | setint: |
Graham Gower | 1e0ad28 | 2010-10-27 15:33:00 -0700 | [diff] [blame] | 467 | ret = put_user(uival, (int __user *)arg); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 468 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | |
| 470 | case KDGETKEYCODE: |
| 471 | case KDSETKEYCODE: |
| 472 | if(!capable(CAP_SYS_TTY_CONFIG)) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 473 | perm = 0; |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 474 | ret = vt_do_kbkeycode_ioctl(cmd, up, perm); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 475 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | |
| 477 | case KDGKBENT: |
| 478 | case KDSKBENT: |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 479 | ret = vt_do_kdsk_ioctl(cmd, up, perm, console); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 480 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
| 482 | case KDGKBSENT: |
| 483 | case KDSKBSENT: |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 484 | ret = vt_do_kdgkb_ioctl(cmd, up, perm); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 485 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | |
Alan Cox | 247ff8e | 2012-02-24 12:47:11 +0000 | [diff] [blame] | 487 | /* Diacritical processing. Handled in keyboard.c as it has |
| 488 | to operate on the keyboard locks and structures */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | case KDGKBDIACR: |
Samuel Thibault | 04c7197 | 2007-10-16 23:27:04 -0700 | [diff] [blame] | 490 | case KDGKBDIACRUC: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | case KDSKBDIACR: |
Samuel Thibault | 04c7197 | 2007-10-16 23:27:04 -0700 | [diff] [blame] | 492 | case KDSKBDIACRUC: |
Alan Cox | 247ff8e | 2012-02-24 12:47:11 +0000 | [diff] [blame] | 493 | ret = vt_do_diacrit(cmd, up, perm); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 494 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
| 496 | /* the ioctls below read/set the flags usually shown in the leds */ |
| 497 | /* don't use them - they will go away without warning */ |
| 498 | case KDGKBLED: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | case KDSKBLED: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | case KDGETLED: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | case KDSETLED: |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 502 | ret = vt_do_kdskled(console, cmd, arg, perm); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 503 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
| 505 | /* |
| 506 | * A process can indicate its willingness to accept signals |
| 507 | * generated by pressing an appropriate key combination. |
| 508 | * Thus, one can have a daemon that e.g. spawns a new console |
| 509 | * upon a keypress and then changes to it. |
| 510 | * See also the kbrequest field of inittab(5). |
| 511 | */ |
| 512 | case KDSIGACCEPT: |
| 513 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | if (!perm || !capable(CAP_KILL)) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 515 | goto eperm; |
Jesper Juhl | 7ed20e1 | 2005-05-01 08:59:14 -0700 | [diff] [blame] | 516 | if (!valid_signal(arg) || arg < 1 || arg == SIGKILL) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 517 | ret = -EINVAL; |
| 518 | else { |
| 519 | spin_lock_irq(&vt_spawn_con.lock); |
| 520 | put_pid(vt_spawn_con.pid); |
| 521 | vt_spawn_con.pid = get_pid(task_pid(current)); |
| 522 | vt_spawn_con.sig = arg; |
| 523 | spin_unlock_irq(&vt_spawn_con.lock); |
| 524 | } |
| 525 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | } |
| 527 | |
| 528 | case VT_SETMODE: |
| 529 | { |
| 530 | struct vt_mode tmp; |
| 531 | |
| 532 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 533 | goto eperm; |
| 534 | if (copy_from_user(&tmp, up, sizeof(struct vt_mode))) { |
| 535 | ret = -EFAULT; |
| 536 | goto out; |
| 537 | } |
Greg Kroah-Hartman | 87a6aca | 2010-03-15 17:14:15 -0700 | [diff] [blame] | 538 | if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS) { |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 539 | ret = -EINVAL; |
| 540 | goto out; |
| 541 | } |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 542 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | vc->vt_mode = tmp; |
| 544 | /* the frsig is ignored, so we set it to 0 */ |
| 545 | vc->vt_mode.frsig = 0; |
Eric W. Biederman | 8b6312f | 2007-02-10 01:44:34 -0800 | [diff] [blame] | 546 | put_pid(vc->vt_pid); |
| 547 | vc->vt_pid = get_pid(task_pid(current)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | /* no switch is required -- saw@shade.msu.ru */ |
| 549 | vc->vt_newvt = -1; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 550 | console_unlock(); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 551 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | } |
| 553 | |
| 554 | case VT_GETMODE: |
| 555 | { |
| 556 | struct vt_mode tmp; |
| 557 | int rc; |
| 558 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 559 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | memcpy(&tmp, &vc->vt_mode, sizeof(struct vt_mode)); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 561 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
| 563 | rc = copy_to_user(up, &tmp, sizeof(struct vt_mode)); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 564 | if (rc) |
| 565 | ret = -EFAULT; |
| 566 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | } |
| 568 | |
| 569 | /* |
| 570 | * Returns global vt state. Note that VT 0 is always open, since |
| 571 | * it's an alias for the current VT, and people can't use it here. |
| 572 | * We cannot return state for more than 16 VTs, since v_state is short. |
| 573 | */ |
| 574 | case VT_GETSTATE: |
| 575 | { |
| 576 | struct vt_stat __user *vtstat = up; |
| 577 | unsigned short state, mask; |
| 578 | |
| 579 | if (put_user(fg_console + 1, &vtstat->v_active)) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 580 | ret = -EFAULT; |
| 581 | else { |
| 582 | state = 1; /* /dev/tty0 is always open */ |
| 583 | for (i = 0, mask = 2; i < MAX_NR_CONSOLES && mask; |
| 584 | ++i, mask <<= 1) |
| 585 | if (VT_IS_IN_USE(i)) |
| 586 | state |= mask; |
| 587 | ret = put_user(state, &vtstat->v_state); |
| 588 | } |
| 589 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | /* |
| 593 | * Returns the first available (non-opened) console. |
| 594 | */ |
| 595 | case VT_OPENQRY: |
| 596 | for (i = 0; i < MAX_NR_CONSOLES; ++i) |
| 597 | if (! VT_IS_IN_USE(i)) |
| 598 | break; |
Graham Gower | 1e0ad28 | 2010-10-27 15:33:00 -0700 | [diff] [blame] | 599 | uival = i < MAX_NR_CONSOLES ? (i+1) : -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | goto setint; |
| 601 | |
| 602 | /* |
| 603 | * ioctl(fd, VT_ACTIVATE, num) will cause us to switch to vt # num, |
| 604 | * with num >= 1 (switches to vt 0, our console, are not allowed, just |
| 605 | * to preserve sanity). |
| 606 | */ |
| 607 | case VT_ACTIVATE: |
| 608 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 609 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | if (arg == 0 || arg > MAX_NR_CONSOLES) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 611 | ret = -ENXIO; |
| 612 | else { |
| 613 | arg--; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 614 | console_lock(); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 615 | ret = vc_allocate(arg); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 616 | console_unlock(); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 617 | if (ret) |
| 618 | break; |
| 619 | set_console(arg); |
| 620 | } |
| 621 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | |
Alan Cox | d3b5cff | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 623 | case VT_SETACTIVATE: |
| 624 | { |
| 625 | struct vt_setactivate vsa; |
| 626 | |
| 627 | if (!perm) |
| 628 | goto eperm; |
| 629 | |
| 630 | if (copy_from_user(&vsa, (struct vt_setactivate __user *)arg, |
Jiri Slaby | a09efb0 | 2009-10-01 15:43:59 -0700 | [diff] [blame] | 631 | sizeof(struct vt_setactivate))) { |
| 632 | ret = -EFAULT; |
| 633 | goto out; |
| 634 | } |
Alan Cox | d3b5cff | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 635 | if (vsa.console == 0 || vsa.console > MAX_NR_CONSOLES) |
| 636 | ret = -ENXIO; |
| 637 | else { |
| 638 | vsa.console--; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 639 | console_lock(); |
Alan Cox | d3b5cff | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 640 | ret = vc_allocate(vsa.console); |
| 641 | if (ret == 0) { |
| 642 | struct vc_data *nvc; |
| 643 | /* This is safe providing we don't drop the |
| 644 | console sem between vc_allocate and |
| 645 | finishing referencing nvc */ |
| 646 | nvc = vc_cons[vsa.console].d; |
| 647 | nvc->vt_mode = vsa.mode; |
| 648 | nvc->vt_mode.frsig = 0; |
| 649 | put_pid(nvc->vt_pid); |
| 650 | nvc->vt_pid = get_pid(task_pid(current)); |
| 651 | } |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 652 | console_unlock(); |
Alan Cox | d3b5cff | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 653 | if (ret) |
| 654 | break; |
| 655 | /* Commence switch and lock */ |
Jiri Olsa | d637837 | 2011-02-11 15:39:28 +0100 | [diff] [blame] | 656 | set_console(vsa.console); |
Alan Cox | d3b5cff | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 657 | } |
Jiri Olsa | d637837 | 2011-02-11 15:39:28 +0100 | [diff] [blame] | 658 | break; |
Alan Cox | d3b5cff | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 659 | } |
| 660 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | /* |
| 662 | * wait until the specified VT has been activated |
| 663 | */ |
| 664 | case VT_WAITACTIVE: |
| 665 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 666 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | if (arg == 0 || arg > MAX_NR_CONSOLES) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 668 | ret = -ENXIO; |
| 669 | else |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 670 | ret = vt_waitactive(arg); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 671 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
| 673 | /* |
| 674 | * If a vt is under process control, the kernel will not switch to it |
| 675 | * immediately, but postpone the operation until the process calls this |
| 676 | * ioctl, allowing the switch to complete. |
| 677 | * |
| 678 | * According to the X sources this is the behavior: |
| 679 | * 0: pending switch-from not OK |
| 680 | * 1: pending switch-from OK |
| 681 | * 2: completed switch-to OK |
| 682 | */ |
| 683 | case VT_RELDISP: |
| 684 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 685 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 687 | if (vc->vt_mode.mode != VT_PROCESS) { |
| 688 | ret = -EINVAL; |
| 689 | break; |
| 690 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | /* |
| 692 | * Switching-from response |
| 693 | */ |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 694 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | if (vc->vt_newvt >= 0) { |
| 696 | if (arg == 0) |
| 697 | /* |
| 698 | * Switch disallowed, so forget we were trying |
| 699 | * to do it. |
| 700 | */ |
| 701 | vc->vt_newvt = -1; |
| 702 | |
| 703 | else { |
| 704 | /* |
| 705 | * The current vt has been released, so |
| 706 | * complete the switch. |
| 707 | */ |
| 708 | int newvt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | newvt = vc->vt_newvt; |
| 710 | vc->vt_newvt = -1; |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 711 | ret = vc_allocate(newvt); |
| 712 | if (ret) { |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 713 | console_unlock(); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 714 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | } |
| 716 | /* |
| 717 | * When we actually do the console switch, |
| 718 | * make sure we are atomic with respect to |
| 719 | * other console switches.. |
| 720 | */ |
| 721 | complete_change_console(vc_cons[newvt].d); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | } |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 723 | } else { |
| 724 | /* |
| 725 | * Switched-to response |
| 726 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | /* |
| 728 | * If it's just an ACK, ignore it |
| 729 | */ |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 730 | if (arg != VT_ACKACQ) |
| 731 | ret = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | } |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 733 | console_unlock(); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 734 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | |
| 736 | /* |
| 737 | * Disallocate memory associated to VT (but leave VT1) |
| 738 | */ |
| 739 | case VT_DISALLOCATE: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 740 | if (arg > MAX_NR_CONSOLES) { |
| 741 | ret = -ENXIO; |
| 742 | break; |
| 743 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | if (arg == 0) { |
Alan Cox | ca9bda0 | 2006-09-29 02:00:03 -0700 | [diff] [blame] | 745 | /* deallocate all unused consoles, but leave 0 */ |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 746 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | for (i=1; i<MAX_NR_CONSOLES; i++) |
| 748 | if (! VT_BUSY(i)) |
Alan Cox | ca9bda0 | 2006-09-29 02:00:03 -0700 | [diff] [blame] | 749 | vc_deallocate(i); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 750 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | } else { |
Alan Cox | ca9bda0 | 2006-09-29 02:00:03 -0700 | [diff] [blame] | 752 | /* deallocate a single console, if possible */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | arg--; |
| 754 | if (VT_BUSY(arg)) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 755 | ret = -EBUSY; |
| 756 | else if (arg) { /* leave 0 */ |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 757 | console_lock(); |
Alan Cox | ca9bda0 | 2006-09-29 02:00:03 -0700 | [diff] [blame] | 758 | vc_deallocate(arg); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 759 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | } |
| 761 | } |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 762 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | case VT_RESIZE: |
| 765 | { |
| 766 | struct vt_sizes __user *vtsizes = up; |
Antonino A. Daplas | e400b6e | 2007-10-16 01:29:35 -0700 | [diff] [blame] | 767 | struct vc_data *vc; |
| 768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | ushort ll,cc; |
| 770 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 771 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | if (get_user(ll, &vtsizes->v_rows) || |
| 773 | get_user(cc, &vtsizes->v_cols)) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 774 | ret = -EFAULT; |
| 775 | else { |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 776 | console_lock(); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 777 | for (i = 0; i < MAX_NR_CONSOLES; i++) { |
| 778 | vc = vc_cons[i].d; |
Antonino A. Daplas | e400b6e | 2007-10-16 01:29:35 -0700 | [diff] [blame] | 779 | |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 780 | if (vc) { |
| 781 | vc->vc_resize_user = 1; |
Alan Cox | 8c9a9dd | 2008-08-15 10:39:38 +0100 | [diff] [blame] | 782 | vc_resize(vc_cons[i].d, cc, ll); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 783 | } |
Antonino A. Daplas | e400b6e | 2007-10-16 01:29:35 -0700 | [diff] [blame] | 784 | } |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 785 | console_unlock(); |
Antonino A. Daplas | e400b6e | 2007-10-16 01:29:35 -0700 | [diff] [blame] | 786 | } |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 787 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | case VT_RESIZEX: |
| 791 | { |
| 792 | struct vt_consize __user *vtconsize = up; |
| 793 | ushort ll,cc,vlin,clin,vcol,ccol; |
| 794 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 795 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | if (!access_ok(VERIFY_READ, vtconsize, |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 797 | sizeof(struct vt_consize))) { |
| 798 | ret = -EFAULT; |
| 799 | break; |
| 800 | } |
| 801 | /* FIXME: Should check the copies properly */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | __get_user(ll, &vtconsize->v_rows); |
| 803 | __get_user(cc, &vtconsize->v_cols); |
| 804 | __get_user(vlin, &vtconsize->v_vlin); |
| 805 | __get_user(clin, &vtconsize->v_clin); |
| 806 | __get_user(vcol, &vtconsize->v_vcol); |
| 807 | __get_user(ccol, &vtconsize->v_ccol); |
| 808 | vlin = vlin ? vlin : vc->vc_scan_lines; |
| 809 | if (clin) { |
| 810 | if (ll) { |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 811 | if (ll != vlin/clin) { |
| 812 | /* Parameters don't add up */ |
| 813 | ret = -EINVAL; |
| 814 | break; |
| 815 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | } else |
| 817 | ll = vlin/clin; |
| 818 | } |
| 819 | if (vcol && ccol) { |
| 820 | if (cc) { |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 821 | if (cc != vcol/ccol) { |
| 822 | ret = -EINVAL; |
| 823 | break; |
| 824 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | } else |
| 826 | cc = vcol/ccol; |
| 827 | } |
| 828 | |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 829 | if (clin > 32) { |
| 830 | ret = -EINVAL; |
| 831 | break; |
| 832 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | |
| 834 | for (i = 0; i < MAX_NR_CONSOLES; i++) { |
| 835 | if (!vc_cons[i].d) |
| 836 | continue; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 837 | console_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | if (vlin) |
| 839 | vc_cons[i].d->vc_scan_lines = vlin; |
| 840 | if (clin) |
| 841 | vc_cons[i].d->vc_font.height = clin; |
Antonino A. Daplas | e400b6e | 2007-10-16 01:29:35 -0700 | [diff] [blame] | 842 | vc_cons[i].d->vc_resize_user = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | vc_resize(vc_cons[i].d, cc, ll); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 844 | console_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | } |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 846 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | case PIO_FONT: { |
| 850 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 851 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | op.op = KD_FONT_OP_SET; |
| 853 | op.flags = KD_FONT_FLAG_OLD | KD_FONT_FLAG_DONT_RECALC; /* Compatibility */ |
| 854 | op.width = 8; |
| 855 | op.height = 0; |
| 856 | op.charcount = 256; |
| 857 | op.data = up; |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 858 | ret = con_font_op(vc_cons[fg_console].d, &op); |
| 859 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | } |
| 861 | |
| 862 | case GIO_FONT: { |
| 863 | op.op = KD_FONT_OP_GET; |
| 864 | op.flags = KD_FONT_FLAG_OLD; |
| 865 | op.width = 8; |
| 866 | op.height = 32; |
| 867 | op.charcount = 256; |
| 868 | op.data = up; |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 869 | ret = con_font_op(vc_cons[fg_console].d, &op); |
| 870 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | } |
| 872 | |
| 873 | case PIO_CMAP: |
| 874 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 875 | ret = -EPERM; |
| 876 | else |
| 877 | ret = con_set_cmap(up); |
| 878 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | |
| 880 | case GIO_CMAP: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 881 | ret = con_get_cmap(up); |
| 882 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | |
| 884 | case PIO_FONTX: |
| 885 | case GIO_FONTX: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 886 | ret = do_fontx_ioctl(cmd, up, perm, &op); |
| 887 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | |
| 889 | case PIO_FONTRESET: |
| 890 | { |
| 891 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 892 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | |
| 894 | #ifdef BROKEN_GRAPHICS_PROGRAMS |
| 895 | /* With BROKEN_GRAPHICS_PROGRAMS defined, the default |
| 896 | font is not saved. */ |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 897 | ret = -ENOSYS; |
| 898 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | #else |
| 900 | { |
| 901 | op.op = KD_FONT_OP_SET_DEFAULT; |
| 902 | op.data = NULL; |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 903 | ret = con_font_op(vc_cons[fg_console].d, &op); |
| 904 | if (ret) |
| 905 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | con_set_default_unimap(vc_cons[fg_console].d); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 907 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | } |
| 909 | #endif |
| 910 | } |
| 911 | |
| 912 | case KDFONTOP: { |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 913 | if (copy_from_user(&op, up, sizeof(op))) { |
| 914 | ret = -EFAULT; |
| 915 | break; |
| 916 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | if (!perm && op.op != KD_FONT_OP_GET) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 918 | goto eperm; |
| 919 | ret = con_font_op(vc, &op); |
| 920 | if (ret) |
| 921 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | if (copy_to_user(up, &op, sizeof(op))) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 923 | ret = -EFAULT; |
| 924 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | } |
| 926 | |
| 927 | case PIO_SCRNMAP: |
| 928 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 929 | ret = -EPERM; |
| 930 | else |
| 931 | ret = con_set_trans_old(up); |
| 932 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
| 934 | case GIO_SCRNMAP: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 935 | ret = con_get_trans_old(up); |
| 936 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | |
| 938 | case PIO_UNISCRNMAP: |
| 939 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 940 | ret = -EPERM; |
| 941 | else |
| 942 | ret = con_set_trans_new(up); |
| 943 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | |
| 945 | case GIO_UNISCRNMAP: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 946 | ret = con_get_trans_new(up); |
| 947 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | |
| 949 | case PIO_UNIMAPCLR: |
| 950 | { struct unimapinit ui; |
| 951 | if (!perm) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 952 | goto eperm; |
| 953 | ret = copy_from_user(&ui, up, sizeof(struct unimapinit)); |
Dan Carpenter | 3fde85d | 2010-06-04 12:20:46 +0200 | [diff] [blame] | 954 | if (ret) |
| 955 | ret = -EFAULT; |
| 956 | else |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 957 | con_clear_unimap(vc, &ui); |
| 958 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | } |
| 960 | |
| 961 | case PIO_UNIMAP: |
| 962 | case GIO_UNIMAP: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 963 | ret = do_unimap_ioctl(cmd, up, perm, vc); |
| 964 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
| 966 | case VT_LOCKSWITCH: |
| 967 | if (!capable(CAP_SYS_TTY_CONFIG)) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 968 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | vt_dont_switch = 1; |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 970 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | case VT_UNLOCKSWITCH: |
| 972 | if (!capable(CAP_SYS_TTY_CONFIG)) |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 973 | goto eperm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | vt_dont_switch = 0; |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 975 | break; |
Samuel Thibault | 533475d | 2006-08-27 01:23:39 -0700 | [diff] [blame] | 976 | case VT_GETHIFONTMASK: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 977 | ret = put_user(vc->vc_hi_font_mask, |
| 978 | (unsigned short __user *)arg); |
| 979 | break; |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 980 | case VT_WAITEVENT: |
| 981 | ret = vt_event_wait_ioctl((struct vt_event __user *)arg); |
| 982 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | default: |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 984 | ret = -ENOIOCTLCMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | } |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 986 | out: |
Arnd Bergmann | ec79d60 | 2010-06-01 22:53:01 +0200 | [diff] [blame] | 987 | tty_unlock(); |
Alan Cox | 9cc3c22 | 2008-04-30 00:53:26 -0700 | [diff] [blame] | 988 | return ret; |
| 989 | eperm: |
| 990 | ret = -EPERM; |
| 991 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | } |
| 993 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | void reset_vc(struct vc_data *vc) |
| 995 | { |
| 996 | vc->vc_mode = KD_TEXT; |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 997 | vt_reset_unicode(vc->vc_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | vc->vt_mode.mode = VT_AUTO; |
| 999 | vc->vt_mode.waitv = 0; |
| 1000 | vc->vt_mode.relsig = 0; |
| 1001 | vc->vt_mode.acqsig = 0; |
| 1002 | vc->vt_mode.frsig = 0; |
Eric W. Biederman | 8b6312f | 2007-02-10 01:44:34 -0800 | [diff] [blame] | 1003 | put_pid(vc->vt_pid); |
| 1004 | vc->vt_pid = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | vc->vt_newvt = -1; |
| 1006 | if (!in_interrupt()) /* Via keyboard.c:SAK() - akpm */ |
| 1007 | reset_palette(vc); |
| 1008 | } |
| 1009 | |
Eric W. Biederman | 8b6312f | 2007-02-10 01:44:34 -0800 | [diff] [blame] | 1010 | void vc_SAK(struct work_struct *work) |
| 1011 | { |
| 1012 | struct vc *vc_con = |
| 1013 | container_of(work, struct vc, SAK_work); |
| 1014 | struct vc_data *vc; |
| 1015 | struct tty_struct *tty; |
| 1016 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1017 | console_lock(); |
Eric W. Biederman | 8b6312f | 2007-02-10 01:44:34 -0800 | [diff] [blame] | 1018 | vc = vc_con->d; |
| 1019 | if (vc) { |
Alan Cox | 079c953 | 2012-02-28 14:49:23 +0000 | [diff] [blame^] | 1020 | /* FIXME: review tty ref counting */ |
Alan Cox | 8ce7326 | 2010-06-01 22:52:56 +0200 | [diff] [blame] | 1021 | tty = vc->port.tty; |
Eric W. Biederman | 8b6312f | 2007-02-10 01:44:34 -0800 | [diff] [blame] | 1022 | /* |
| 1023 | * SAK should also work in all raw modes and reset |
| 1024 | * them properly. |
| 1025 | */ |
| 1026 | if (tty) |
| 1027 | __do_SAK(tty); |
| 1028 | reset_vc(vc); |
| 1029 | } |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1030 | console_unlock(); |
Eric W. Biederman | 8b6312f | 2007-02-10 01:44:34 -0800 | [diff] [blame] | 1031 | } |
| 1032 | |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 1033 | #ifdef CONFIG_COMPAT |
| 1034 | |
| 1035 | struct compat_consolefontdesc { |
| 1036 | unsigned short charcount; /* characters in font (256 or 512) */ |
| 1037 | unsigned short charheight; /* scan lines per character (1-32) */ |
| 1038 | compat_caddr_t chardata; /* font data in expanded form */ |
| 1039 | }; |
| 1040 | |
| 1041 | static inline int |
| 1042 | compat_fontx_ioctl(int cmd, struct compat_consolefontdesc __user *user_cfd, |
| 1043 | int perm, struct console_font_op *op) |
| 1044 | { |
| 1045 | struct compat_consolefontdesc cfdarg; |
| 1046 | int i; |
| 1047 | |
| 1048 | if (copy_from_user(&cfdarg, user_cfd, sizeof(struct compat_consolefontdesc))) |
| 1049 | return -EFAULT; |
| 1050 | |
| 1051 | switch (cmd) { |
| 1052 | case PIO_FONTX: |
| 1053 | if (!perm) |
| 1054 | return -EPERM; |
| 1055 | op->op = KD_FONT_OP_SET; |
| 1056 | op->flags = KD_FONT_FLAG_OLD; |
| 1057 | op->width = 8; |
| 1058 | op->height = cfdarg.charheight; |
| 1059 | op->charcount = cfdarg.charcount; |
| 1060 | op->data = compat_ptr(cfdarg.chardata); |
| 1061 | return con_font_op(vc_cons[fg_console].d, op); |
| 1062 | case GIO_FONTX: |
| 1063 | op->op = KD_FONT_OP_GET; |
| 1064 | op->flags = KD_FONT_FLAG_OLD; |
| 1065 | op->width = 8; |
| 1066 | op->height = cfdarg.charheight; |
| 1067 | op->charcount = cfdarg.charcount; |
| 1068 | op->data = compat_ptr(cfdarg.chardata); |
| 1069 | i = con_font_op(vc_cons[fg_console].d, op); |
| 1070 | if (i) |
| 1071 | return i; |
| 1072 | cfdarg.charheight = op->height; |
| 1073 | cfdarg.charcount = op->charcount; |
| 1074 | if (copy_to_user(user_cfd, &cfdarg, sizeof(struct compat_consolefontdesc))) |
| 1075 | return -EFAULT; |
| 1076 | return 0; |
| 1077 | } |
| 1078 | return -EINVAL; |
| 1079 | } |
| 1080 | |
| 1081 | struct compat_console_font_op { |
| 1082 | compat_uint_t op; /* operation code KD_FONT_OP_* */ |
| 1083 | compat_uint_t flags; /* KD_FONT_FLAG_* */ |
| 1084 | compat_uint_t width, height; /* font size */ |
| 1085 | compat_uint_t charcount; |
| 1086 | compat_caddr_t data; /* font data with height fixed to 32 */ |
| 1087 | }; |
| 1088 | |
| 1089 | static inline int |
| 1090 | compat_kdfontop_ioctl(struct compat_console_font_op __user *fontop, |
| 1091 | int perm, struct console_font_op *op, struct vc_data *vc) |
| 1092 | { |
| 1093 | int i; |
| 1094 | |
| 1095 | if (copy_from_user(op, fontop, sizeof(struct compat_console_font_op))) |
| 1096 | return -EFAULT; |
| 1097 | if (!perm && op->op != KD_FONT_OP_GET) |
| 1098 | return -EPERM; |
| 1099 | op->data = compat_ptr(((struct compat_console_font_op *)op)->data); |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 1100 | i = con_font_op(vc, op); |
| 1101 | if (i) |
| 1102 | return i; |
| 1103 | ((struct compat_console_font_op *)op)->data = (unsigned long)op->data; |
| 1104 | if (copy_to_user(fontop, op, sizeof(struct compat_console_font_op))) |
| 1105 | return -EFAULT; |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | struct compat_unimapdesc { |
| 1110 | unsigned short entry_ct; |
| 1111 | compat_caddr_t entries; |
| 1112 | }; |
| 1113 | |
| 1114 | static inline int |
| 1115 | compat_unimap_ioctl(unsigned int cmd, struct compat_unimapdesc __user *user_ud, |
| 1116 | int perm, struct vc_data *vc) |
| 1117 | { |
| 1118 | struct compat_unimapdesc tmp; |
| 1119 | struct unipair __user *tmp_entries; |
| 1120 | |
| 1121 | if (copy_from_user(&tmp, user_ud, sizeof tmp)) |
| 1122 | return -EFAULT; |
| 1123 | tmp_entries = compat_ptr(tmp.entries); |
| 1124 | if (tmp_entries) |
| 1125 | if (!access_ok(VERIFY_WRITE, tmp_entries, |
| 1126 | tmp.entry_ct*sizeof(struct unipair))) |
| 1127 | return -EFAULT; |
| 1128 | switch (cmd) { |
| 1129 | case PIO_UNIMAP: |
| 1130 | if (!perm) |
| 1131 | return -EPERM; |
| 1132 | return con_set_unimap(vc, tmp.entry_ct, tmp_entries); |
| 1133 | case GIO_UNIMAP: |
| 1134 | if (!perm && fg_console != vc->vc_num) |
| 1135 | return -EPERM; |
| 1136 | return con_get_unimap(vc, tmp.entry_ct, &(user_ud->entry_ct), tmp_entries); |
| 1137 | } |
| 1138 | return 0; |
| 1139 | } |
| 1140 | |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 1141 | long vt_compat_ioctl(struct tty_struct *tty, |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 1142 | unsigned int cmd, unsigned long arg) |
| 1143 | { |
| 1144 | struct vc_data *vc = tty->driver_data; |
| 1145 | struct console_font_op op; /* used in multiple places here */ |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 1146 | unsigned int console; |
| 1147 | void __user *up = (void __user *)arg; |
| 1148 | int perm; |
| 1149 | int ret = 0; |
| 1150 | |
| 1151 | console = vc->vc_num; |
| 1152 | |
Arnd Bergmann | ec79d60 | 2010-06-01 22:53:01 +0200 | [diff] [blame] | 1153 | tty_lock(); |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 1154 | |
| 1155 | if (!vc_cons_allocated(console)) { /* impossible? */ |
| 1156 | ret = -ENOIOCTLCMD; |
| 1157 | goto out; |
| 1158 | } |
| 1159 | |
| 1160 | /* |
| 1161 | * To have permissions to do most of the vt ioctls, we either have |
| 1162 | * to be the owner of the tty, or have CAP_SYS_TTY_CONFIG. |
| 1163 | */ |
| 1164 | perm = 0; |
| 1165 | if (current->signal->tty == tty || capable(CAP_SYS_TTY_CONFIG)) |
| 1166 | perm = 1; |
| 1167 | |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 1168 | switch (cmd) { |
| 1169 | /* |
| 1170 | * these need special handlers for incompatible data structures |
| 1171 | */ |
| 1172 | case PIO_FONTX: |
| 1173 | case GIO_FONTX: |
| 1174 | ret = compat_fontx_ioctl(cmd, up, perm, &op); |
| 1175 | break; |
| 1176 | |
| 1177 | case KDFONTOP: |
| 1178 | ret = compat_kdfontop_ioctl(up, perm, &op, vc); |
| 1179 | break; |
| 1180 | |
| 1181 | case PIO_UNIMAP: |
| 1182 | case GIO_UNIMAP: |
Andreas Schwab | 4b1fe77 | 2009-09-28 20:10:02 +0200 | [diff] [blame] | 1183 | ret = compat_unimap_ioctl(cmd, up, perm, vc); |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 1184 | break; |
| 1185 | |
| 1186 | /* |
| 1187 | * all these treat 'arg' as an integer |
| 1188 | */ |
| 1189 | case KIOCSOUND: |
| 1190 | case KDMKTONE: |
| 1191 | #ifdef CONFIG_X86 |
| 1192 | case KDADDIO: |
| 1193 | case KDDELIO: |
| 1194 | #endif |
| 1195 | case KDSETMODE: |
| 1196 | case KDMAPDISP: |
| 1197 | case KDUNMAPDISP: |
| 1198 | case KDSKBMODE: |
| 1199 | case KDSKBMETA: |
| 1200 | case KDSKBLED: |
| 1201 | case KDSETLED: |
| 1202 | case KDSIGACCEPT: |
| 1203 | case VT_ACTIVATE: |
| 1204 | case VT_WAITACTIVE: |
| 1205 | case VT_RELDISP: |
| 1206 | case VT_DISALLOCATE: |
| 1207 | case VT_RESIZE: |
| 1208 | case VT_RESIZEX: |
| 1209 | goto fallback; |
| 1210 | |
| 1211 | /* |
| 1212 | * the rest has a compatible data structure behind arg, |
| 1213 | * but we have to convert it to a proper 64 bit pointer. |
| 1214 | */ |
| 1215 | default: |
| 1216 | arg = (unsigned long)compat_ptr(arg); |
| 1217 | goto fallback; |
| 1218 | } |
| 1219 | out: |
Arnd Bergmann | ec79d60 | 2010-06-01 22:53:01 +0200 | [diff] [blame] | 1220 | tty_unlock(); |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 1221 | return ret; |
| 1222 | |
| 1223 | fallback: |
Arnd Bergmann | ec79d60 | 2010-06-01 22:53:01 +0200 | [diff] [blame] | 1224 | tty_unlock(); |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 1225 | return vt_ioctl(tty, cmd, arg); |
Arnd Bergmann | e921665 | 2009-08-06 15:09:28 +0200 | [diff] [blame] | 1226 | } |
| 1227 | |
| 1228 | |
| 1229 | #endif /* CONFIG_COMPAT */ |
| 1230 | |
| 1231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | /* |
Alan Cox | d3b5cff | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 1233 | * Performs the back end of a vt switch. Called under the console |
| 1234 | * semaphore. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | */ |
| 1236 | static void complete_change_console(struct vc_data *vc) |
| 1237 | { |
| 1238 | unsigned char old_vc_mode; |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 1239 | int old = fg_console; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | |
| 1241 | last_console = fg_console; |
| 1242 | |
| 1243 | /* |
| 1244 | * If we're switching, we could be going from KD_GRAPHICS to |
| 1245 | * KD_TEXT mode or vice versa, which means we need to blank or |
| 1246 | * unblank the screen later. |
| 1247 | */ |
| 1248 | old_vc_mode = vc_cons[fg_console].d->vc_mode; |
| 1249 | switch_screen(vc); |
| 1250 | |
| 1251 | /* |
Eric W. Biederman | 3dfcaf16 | 2006-12-13 00:34:05 -0800 | [diff] [blame] | 1252 | * This can't appear below a successful kill_pid(). If it did, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1253 | * then the *blank_screen operation could occur while X, having |
| 1254 | * received acqsig, is waking up on another processor. This |
| 1255 | * condition can lead to overlapping accesses to the VGA range |
| 1256 | * and the framebuffer (causing system lockups). |
| 1257 | * |
| 1258 | * To account for this we duplicate this code below only if the |
| 1259 | * controlling process is gone and we've called reset_vc. |
| 1260 | */ |
| 1261 | if (old_vc_mode != vc->vc_mode) { |
| 1262 | if (vc->vc_mode == KD_TEXT) |
| 1263 | do_unblank_screen(1); |
| 1264 | else |
| 1265 | do_blank_screen(1); |
| 1266 | } |
| 1267 | |
| 1268 | /* |
| 1269 | * If this new console is under process control, send it a signal |
| 1270 | * telling it that it has acquired. Also check if it has died and |
| 1271 | * clean up (similar to logic employed in change_console()) |
| 1272 | */ |
Greg Kroah-Hartman | 87a6aca | 2010-03-15 17:14:15 -0700 | [diff] [blame] | 1273 | if (vc->vt_mode.mode == VT_PROCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | /* |
Eric W. Biederman | 3dfcaf16 | 2006-12-13 00:34:05 -0800 | [diff] [blame] | 1275 | * Send the signal as privileged - kill_pid() will |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | * tell us if the process has gone or something else |
| 1277 | * is awry |
| 1278 | */ |
Eric W. Biederman | bde0d2c9 | 2006-10-02 02:17:14 -0700 | [diff] [blame] | 1279 | if (kill_pid(vc->vt_pid, vc->vt_mode.acqsig, 1) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | /* |
| 1281 | * The controlling process has died, so we revert back to |
| 1282 | * normal operation. In this case, we'll also change back |
| 1283 | * to KD_TEXT mode. I'm not sure if this is strictly correct |
| 1284 | * but it saves the agony when the X server dies and the screen |
| 1285 | * remains blanked due to KD_GRAPHICS! It would be nice to do |
| 1286 | * this outside of VT_PROCESS but there is no single process |
| 1287 | * to account for and tracking tty count may be undesirable. |
| 1288 | */ |
| 1289 | reset_vc(vc); |
| 1290 | |
| 1291 | if (old_vc_mode != vc->vc_mode) { |
| 1292 | if (vc->vc_mode == KD_TEXT) |
| 1293 | do_unblank_screen(1); |
| 1294 | else |
| 1295 | do_blank_screen(1); |
| 1296 | } |
| 1297 | } |
| 1298 | } |
| 1299 | |
| 1300 | /* |
| 1301 | * Wake anyone waiting for their VT to activate |
| 1302 | */ |
Alan Cox | 8b92e87 | 2009-09-19 13:13:24 -0700 | [diff] [blame] | 1303 | vt_event_post(VT_EVENT_SWITCH, old, vc->vc_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | return; |
| 1305 | } |
| 1306 | |
| 1307 | /* |
| 1308 | * Performs the front-end of a vt switch |
| 1309 | */ |
| 1310 | void change_console(struct vc_data *new_vc) |
| 1311 | { |
| 1312 | struct vc_data *vc; |
| 1313 | |
| 1314 | if (!new_vc || new_vc->vc_num == fg_console || vt_dont_switch) |
| 1315 | return; |
| 1316 | |
| 1317 | /* |
| 1318 | * If this vt is in process mode, then we need to handshake with |
| 1319 | * that process before switching. Essentially, we store where that |
| 1320 | * vt wants to switch to and wait for it to tell us when it's done |
| 1321 | * (via VT_RELDISP ioctl). |
| 1322 | * |
| 1323 | * We also check to see if the controlling process still exists. |
| 1324 | * If it doesn't, we reset this vt to auto mode and continue. |
| 1325 | * This is a cheap way to track process control. The worst thing |
| 1326 | * that can happen is: we send a signal to a process, it dies, and |
| 1327 | * the switch gets "lost" waiting for a response; hopefully, the |
| 1328 | * user will try again, we'll detect the process is gone (unless |
| 1329 | * the user waits just the right amount of time :-) and revert the |
| 1330 | * vt to auto control. |
| 1331 | */ |
| 1332 | vc = vc_cons[fg_console].d; |
Greg Kroah-Hartman | 87a6aca | 2010-03-15 17:14:15 -0700 | [diff] [blame] | 1333 | if (vc->vt_mode.mode == VT_PROCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | /* |
Eric W. Biederman | 3dfcaf16 | 2006-12-13 00:34:05 -0800 | [diff] [blame] | 1335 | * Send the signal as privileged - kill_pid() will |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | * tell us if the process has gone or something else |
Jan Lübbe | a64314e | 2007-09-29 18:47:51 +0200 | [diff] [blame] | 1337 | * is awry. |
| 1338 | * |
| 1339 | * We need to set vt_newvt *before* sending the signal or we |
| 1340 | * have a race. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | */ |
Jan Lübbe | a64314e | 2007-09-29 18:47:51 +0200 | [diff] [blame] | 1342 | vc->vt_newvt = new_vc->vc_num; |
Eric W. Biederman | bde0d2c9 | 2006-10-02 02:17:14 -0700 | [diff] [blame] | 1343 | if (kill_pid(vc->vt_pid, vc->vt_mode.relsig, 1) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | /* |
Greg Kroah-Hartman | 87a6aca | 2010-03-15 17:14:15 -0700 | [diff] [blame] | 1345 | * It worked. Mark the vt to switch to and |
| 1346 | * return. The process needs to send us a |
| 1347 | * VT_RELDISP ioctl to complete the switch. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | */ |
Greg Kroah-Hartman | 87a6aca | 2010-03-15 17:14:15 -0700 | [diff] [blame] | 1349 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | } |
| 1351 | |
| 1352 | /* |
Greg Kroah-Hartman | 87a6aca | 2010-03-15 17:14:15 -0700 | [diff] [blame] | 1353 | * The controlling process has died, so we revert back to |
| 1354 | * normal operation. In this case, we'll also change back |
| 1355 | * to KD_TEXT mode. I'm not sure if this is strictly correct |
| 1356 | * but it saves the agony when the X server dies and the screen |
| 1357 | * remains blanked due to KD_GRAPHICS! It would be nice to do |
| 1358 | * this outside of VT_PROCESS but there is no single process |
| 1359 | * to account for and tracking tty count may be undesirable. |
| 1360 | */ |
| 1361 | reset_vc(vc); |
| 1362 | |
| 1363 | /* |
| 1364 | * Fall through to normal (VT_AUTO) handling of the switch... |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | */ |
| 1366 | } |
| 1367 | |
| 1368 | /* |
| 1369 | * Ignore all switches in KD_GRAPHICS+VT_AUTO mode |
| 1370 | */ |
| 1371 | if (vc->vc_mode == KD_GRAPHICS) |
| 1372 | return; |
| 1373 | |
| 1374 | complete_change_console(new_vc); |
| 1375 | } |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1376 | |
| 1377 | /* Perform a kernel triggered VT switch for suspend/resume */ |
| 1378 | |
| 1379 | static int disable_vt_switch; |
| 1380 | |
| 1381 | int vt_move_to_console(unsigned int vt, int alloc) |
| 1382 | { |
| 1383 | int prev; |
| 1384 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1385 | console_lock(); |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1386 | /* Graphics mode - up to X */ |
| 1387 | if (disable_vt_switch) { |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1388 | console_unlock(); |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1389 | return 0; |
| 1390 | } |
| 1391 | prev = fg_console; |
| 1392 | |
| 1393 | if (alloc && vc_allocate(vt)) { |
| 1394 | /* we can't have a free VC for now. Too bad, |
| 1395 | * we don't want to mess the screen for now. */ |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1396 | console_unlock(); |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1397 | return -ENOSPC; |
| 1398 | } |
| 1399 | |
| 1400 | if (set_console(vt)) { |
| 1401 | /* |
| 1402 | * We're unable to switch to the SUSPEND_CONSOLE. |
| 1403 | * Let the calling function know so it can decide |
| 1404 | * what to do. |
| 1405 | */ |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1406 | console_unlock(); |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1407 | return -EIO; |
| 1408 | } |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1409 | console_unlock(); |
Arnd Bergmann | be1bc28 | 2010-06-01 22:53:05 +0200 | [diff] [blame] | 1410 | tty_lock(); |
Jiri Slaby | 797938b | 2009-08-11 23:20:41 +0200 | [diff] [blame] | 1411 | if (vt_waitactive(vt + 1)) { |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1412 | pr_debug("Suspend: Can't switch VCs."); |
Arnd Bergmann | be1bc28 | 2010-06-01 22:53:05 +0200 | [diff] [blame] | 1413 | tty_unlock(); |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1414 | return -EINTR; |
| 1415 | } |
Arnd Bergmann | be1bc28 | 2010-06-01 22:53:05 +0200 | [diff] [blame] | 1416 | tty_unlock(); |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1417 | return prev; |
| 1418 | } |
| 1419 | |
| 1420 | /* |
| 1421 | * Normally during a suspend, we allocate a new console and switch to it. |
| 1422 | * When we resume, we switch back to the original console. This switch |
| 1423 | * can be slow, so on systems where the framebuffer can handle restoration |
| 1424 | * of video registers anyways, there's little point in doing the console |
| 1425 | * switch. This function allows you to disable it by passing it '0'. |
| 1426 | */ |
| 1427 | void pm_set_vt_switch(int do_switch) |
| 1428 | { |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1429 | console_lock(); |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1430 | disable_vt_switch = !do_switch; |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1431 | console_unlock(); |
Alan Cox | 8d23355 | 2009-09-19 13:13:25 -0700 | [diff] [blame] | 1432 | } |
| 1433 | EXPORT_SYMBOL(pm_set_vt_switch); |