/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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.
+ *
+ * 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
* 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/param.h>
#include <sys/dir.h>
#include <sys/proc.h>
-#include <sys/buf.h>
#include <sys/systm.h>
+#include <sys/conf.h>
#include <sys/vm.h>
-#include <sys/uio.h>
+#include <sys/uio_internal.h>
#include <sys/malloc.h>
#include <mach/vm_types.h>
#include <mach/vm_param.h>
#include <vm/vm_kern.h> /* for kernel_map */
+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;
-mmread(dev, uio)
- dev_t dev;
- struct uio *uio;
+int mmread(dev_t dev, struct uio *uio);
+int mmwrite(dev_t dev, struct uio *uio);
+int mmioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p);
+int mmrw(dev_t dev, struct uio *uio, enum uio_rw rw);
+
+int
+mmread(dev_t dev, struct uio *uio)
{
return (mmrw(dev, uio, UIO_READ));
}
-mmwrite(dev, uio)
- dev_t dev;
- struct uio *uio;
+int
+mmwrite(dev_t dev, struct uio *uio)
{
return (mmrw(dev, uio, UIO_WRITE));
}
-mmrw(dev, uio, rw)
- dev_t dev;
- struct uio *uio;
- enum uio_rw rw;
+int
+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:
+ /* OK to do nothing: we always return immediately */
+ break;
+ default:
+ return ENODEV;
+ }
+
+ return (0);
+}
+
+int
+mmrw(dev_t dev, struct uio *uio, enum uio_rw rw)
{
register int o;
register u_int c, v;
- register struct iovec *iov;
int error = 0;
vm_offset_t where;
- int spl;
vm_size_t size;
- extern boolean_t kernacc(off_t, size_t );
-
- while (uio->uio_resid > 0 && error == 0) {
- iov = uio->uio_iov;
- if (iov->iov_len == 0) {
- uio->uio_iov++;
- uio->uio_iovcnt--;
- if (uio->uio_iovcnt < 0)
- panic("mmrw");
- continue;
- }
+
+
+ while (uio_resid(uio) > 0 && error == 0) {
+ 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;
- c = min(PAGE_SIZE - o, (u_int)iov->iov_len);
+ 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 = iov->iov_len;
+ c = uio_curriovlen(uio);
if (!kernacc(uio->uio_offset, c))
goto fault;
- error = uiomove((caddr_t)uio->uio_offset, (int)c, uio);
+ error = uiomove((caddr_t)(uintptr_t)uio->uio_offset,
+ (int)c, uio);
continue;
/* minor device 2 is EOF/RATHOLE */
case 2:
if (rw == UIO_READ)
return (0);
- c = iov->iov_len;
+ c = uio_curriovlen(uio);
break;
case 3:
if(devzerobuf == NULL) {
bzero(devzerobuf, PAGE_SIZE);
}
if(uio->uio_rw == UIO_WRITE) {
- c = iov->iov_len;
+ c = uio_curriovlen(uio);
break;
}
- c = min(iov->iov_len, PAGE_SIZE);
+ c = min(uio_curriovlen(uio), PAGE_SIZE);
error = uiomove(devzerobuf, (int)c, uio);
continue;
default:
if (error)
break;
- iov->iov_base += c;
- iov->iov_len -= c;
- uio->uio_offset += c;
- uio->uio_resid -= c;
+ uio_update(uio, c);
}
return (error);
fault:
end = start + len;
while (base < end) {
- if(kvtophys((vm_offset_t)base) == NULL)
+ if(kvtophys((vm_offset_t)base) == 0ULL)
return(FALSE);
base += page_size;
}
projects / apple / xnu.git / blobdiff