| io.c (202097) | io.c (207329) |
|---|---|
| 1/*- 2 * Copyright (c) 2004 Mark R V Murray 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2004 Mark R V Murray 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/sys/amd64/amd64/io.c 202097 2010-01-11 18:10:13Z marcel $"); | 28__FBSDID("$FreeBSD: head/sys/amd64/amd64/io.c 207329 2010-04-28 15:38:01Z attilio $"); |
| 29 30#include <sys/param.h> | 29 30#include <sys/param.h> |
| 31#include <sys/conf.h> 32#include <sys/fcntl.h> 33#include <sys/lock.h> 34#include <sys/malloc.h> 35#include <sys/mutex.h> 36#include <sys/priv.h> | |
| 37#include <sys/proc.h> | 31#include <sys/proc.h> |
| 38#include <sys/signalvar.h> 39#include <sys/systm.h> | |
| 40 | 32 |
| 41#include <machine/db_machdep.h> | |
| 42#include <machine/frame.h> | 33#include <machine/frame.h> |
| 34#include <machine/iodev.h> |
|
| 43#include <machine/psl.h> | 35#include <machine/psl.h> |
| 44#include <machine/specialreg.h> | |
| 45 | 36 |
| 46#include <vm/vm.h> 47#include <vm/pmap.h> 48 49#include <machine/iodev.h> 50 51/* ARGSUSED */ | |
| 52int | 37int |
| 53ioopen(struct cdev *dev __unused, int flags __unused, int fmt __unused, 54 struct thread *td) | 38iodev_open(struct thread *td) |
| 55{ | 39{ |
| 56 int error; | |
| 57 | 40 |
| 58 error = priv_check(td, PRIV_IO); 59 if (error != 0) 60 return (error); 61 error = securelevel_gt(td->td_ucred, 0); 62 if (error != 0) 63 return (error); 64 | |
| 65 td->td_frame->tf_rflags |= PSL_IOPL; | 41 td->td_frame->tf_rflags |= PSL_IOPL; |
| 66 | |
| 67 return (0); 68} 69 | 42 return (0); 43} 44 |
| 70/* ARGSUSED */ | |
| 71int | 45int |
| 72ioclose(struct cdev *dev __unused, int flags __unused, int fmt __unused, 73 struct thread *td) | 46iodev_close(struct thread *td) |
| 74{ | 47{ |
| 75 td->td_frame->tf_rflags &= ~PSL_IOPL; | |
| 76 | 48 |
| 49 td->td_frame->tf_rflags &= ~PSL_IOPL; |
|
| 77 return (0); 78} 79 80/* ARGSUSED */ 81int | 50 return (0); 51} 52 53/* ARGSUSED */ 54int |
| 82ioioctl(struct cdev *dev __unused, u_long cmd __unused, caddr_t data __unused, 83 int fflag __unused, struct thread *td __unused) | 55iodev_ioctl(u_long cmd __unused, caddr_t data __unused) |
| 84{ 85 | 56{ 57 |
| 86 return (ENXIO); | 58 return (ENOIOCTL); |
| 87} | 59} |