/*
* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*-
* Copyright (c) 1988 University of Utah.
#include <sys/dir.h>
#include <sys/proc.h>
#include <sys/systm.h>
+#include <sys/conf.h>
#include <sys/vm.h>
#include <sys/uio_internal.h>
#include <sys/malloc.h>
#include <mach/vm_param.h>
#include <vm/vm_kern.h> /* for kernel_map */
-extern vm_offset_t kvtophys(vm_offset_t va);
+extern addr64_t kvtophys(vm_offset_t va);
extern boolean_t kernacc(off_t, size_t );
+#if !defined(SECURE_KERNEL)
+extern int setup_kmem;
+#endif
static caddr_t devzerobuf;
}
int
-mmioctl(__unused dev_t dev, u_long cmd, __unused caddr_t data,
+mmioctl(dev_t dev, u_long cmd, __unused caddr_t data,
__unused int flag, __unused struct proc *p)
{
+ int minnum = minor(dev);
+
+ if (0 == minnum || 1 == minnum) {
+ /* /dev/mem and /dev/kmem */
+#if defined(SECURE_KERNEL)
+ return (ENODEV);
+#else
+ if (0 == setup_kmem)
+ return (EINVAL);
+#endif
+ }
+
switch (cmd) {
case FIONBIO:
case FIOASYNC:
vm_offset_t where;
vm_size_t size;
+
while (uio_resid(uio) > 0 && error == 0) {
- if (uio_iov_len(uio) == 0) {
- uio_next_iov(uio);
- uio->uio_iovcnt--;
- if (uio->uio_iovcnt < 0)
- panic("mmrw");
- continue;
- }
+ uio_update(uio, 0);
+
switch (minor(dev)) {
/* minor device 0 is physical memory */
case 0:
+#if defined(SECURE_KERNEL)
+ return(ENODEV);
+#else
+ if (setup_kmem == 0)
+ return(ENODEV);
+#endif
+
v = trunc_page(uio->uio_offset);
- if (uio->uio_offset >= mem_size)
+ if (uio->uio_offset >= (off_t)mem_size)
goto fault;
size= PAGE_SIZE;
goto fault;
}
o = uio->uio_offset - v;
- // LP64todo - fix this!
- c = min(PAGE_SIZE - o, (u_int)uio_iov_len(uio));
+ c = min(PAGE_SIZE - o, uio_curriovlen(uio));
error = uiomove((caddr_t) (where + o), c, uio);
kmem_free(kernel_map, where, PAGE_SIZE);
continue;
/* minor device 1 is kernel memory */
case 1:
+#if defined(SECURE_KERNEL)
+ return(ENODEV);
+#else
+ if (setup_kmem == 0)
+ return(ENODEV);
+#endif
/* Do some sanity checking */
if (((vm_address_t)uio->uio_offset >= VM_MAX_KERNEL_ADDRESS) ||
- ((vm_address_t)uio->uio_offset <= VM_MIN_KERNEL_ADDRESS))
+ ((vm_address_t)uio->uio_offset <= VM_MIN_KERNEL_AND_KEXT_ADDRESS))
goto fault;
- c = uio_iov_len(uio);
+ c = uio_curriovlen(uio);
if (!kernacc(uio->uio_offset, c))
goto fault;
error = uiomove((caddr_t)(uintptr_t)uio->uio_offset,
case 2:
if (rw == UIO_READ)
return (0);
- c = uio_iov_len(uio);
+ c = uio_curriovlen(uio);
break;
case 3:
if(devzerobuf == NULL) {
bzero(devzerobuf, PAGE_SIZE);
}
if(uio->uio_rw == UIO_WRITE) {
- c = uio_iov_len(uio);
+ c = uio_curriovlen(uio);
break;
}
- // LP64todo - fix this!
- c = min(uio_iov_len(uio), PAGE_SIZE);
+ c = min(uio_curriovlen(uio), PAGE_SIZE);
error = uiomove(devzerobuf, (int)c, uio);
continue;
default:
if (error)
break;
- uio_iov_base_add(uio, c);
- uio_iov_len_add(uio, -((int)c));
- uio->uio_offset += c;
- uio_setresid(uio, (uio_resid(uio) - c));
+ uio_update(uio, c);
}
return (error);
fault:
projects / apple / xnu.git / blobdiff