/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 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) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
#if DEBUG
#include <kern/simple_lock.h>
-static int uio_t_count = 0;
+static uint32_t uio_t_count = 0;
#endif /* DEBUG */
+#define IS_VALID_UIO_SEGFLG(segflg) \
+ ( (segflg) == UIO_USERSPACE || \
+ (segflg) == UIO_SYSSPACE || \
+ (segflg) == UIO_USERSPACE32 || \
+ (segflg) == UIO_USERSPACE64 || \
+ (segflg) == UIO_SYSSPACE32 || \
+ (segflg) == UIO_USERISPACE || \
+ (segflg) == UIO_PHYS_USERSPACE || \
+ (segflg) == UIO_PHYS_SYSSPACE || \
+ (segflg) == UIO_USERISPACE32 || \
+ (segflg) == UIO_PHYS_USERSPACE32 || \
+ (segflg) == UIO_USERISPACE64 || \
+ (segflg) == UIO_PHYS_USERSPACE64 )
+/*
+ * Returns: 0 Success
+ * uiomove64:EFAULT
+ *
+ * Notes: The first argument should be a caddr_t, but const poisoning
+ * for typedef'ed types doesn't work in gcc.
+ */
int
-uiomove(cp, n, uio)
- register caddr_t cp;
- register int n;
- register uio_t uio;
+uiomove(const char * cp, int n, uio_t uio)
{
- return uiomove64((addr64_t)((unsigned int)cp), n, uio);
+ return uiomove64((const addr64_t)(uintptr_t)cp, n, uio);
}
- // LP64todo - fix this! 'n' should be int64_t?
+/*
+ * Returns: 0 Success
+ * EFAULT
+ * copyout:EFAULT
+ * copyin:EFAULT
+ * copywithin:EFAULT
+ * copypv:EFAULT
+ */
int
-uiomove64(addr64_t cp, int n, register struct uio *uio)
+uiomove64(const addr64_t c_cp, int n, struct uio *uio)
{
+ addr64_t cp = c_cp;
#if LP64KERN
- register uint64_t acnt;
+ uint64_t acnt;
#else
- register u_int acnt;
+ u_int acnt;
#endif
int error = 0;
#endif /* LP64_DEBUG */
while (n > 0 && uio_resid(uio)) {
- acnt = uio_iov_len(uio);
+ uio_update(uio, 0);
+ acnt = uio_curriovlen(uio);
if (acnt == 0) {
- uio_next_iov(uio);
- uio->uio_iovcnt--;
continue;
}
if (n > 0 && acnt > (uint64_t)n)
case UIO_USERSPACE64:
case UIO_USERISPACE64:
- // LP64 - 3rd argument in debug code is 64 bit, expected to be 32 bit
- if (uio->uio_rw == UIO_READ)
- {
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_START,
- (int)cp, (int)uio->uio_iovs.iov64p->iov_base, acnt, 0,0);
-
- error = copyout( CAST_DOWN(caddr_t, cp), uio->uio_iovs.iov64p->iov_base, acnt );
-
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_END,
- (int)cp, (int)uio->uio_iovs.iov64p->iov_base, acnt, 0,0);
- }
- else
- {
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_START,
- (int)uio->uio_iovs.iov64p->iov_base, (int)cp, acnt, 0,0);
-
- error = copyin(uio->uio_iovs.iov64p->iov_base, CAST_DOWN(caddr_t, cp), acnt);
-
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_END,
- (int)uio->uio_iovs.iov64p->iov_base, (int)cp, acnt, 0,0);
- }
- if (error)
- return (error);
- break;
-
case UIO_USERSPACE32:
case UIO_USERISPACE32:
case UIO_USERSPACE:
case UIO_USERISPACE:
+ // LP64 - 3rd argument in debug code is 64 bit, expected to be 32 bit
if (uio->uio_rw == UIO_READ)
{
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_START,
- (int)cp, (int)uio->uio_iovs.iov32p->iov_base, acnt, 0,0);
+ (int)cp, (uintptr_t)uio->uio_iovs.uiovp->iov_base, acnt, 0,0);
- error = copyout( CAST_DOWN(caddr_t, cp), CAST_USER_ADDR_T(uio->uio_iovs.iov32p->iov_base), acnt );
+ error = copyout( CAST_DOWN(caddr_t, cp), uio->uio_iovs.uiovp->iov_base, acnt );
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_END,
- (int)cp, (int)uio->uio_iovs.iov32p->iov_base, acnt, 0,0);
+ (int)cp, (uintptr_t)uio->uio_iovs.uiovp->iov_base, acnt, 0,0);
}
else
{
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_START,
- (int)uio->uio_iovs.iov32p->iov_base, (int)cp, acnt, 0,0);
+ (uintptr_t)uio->uio_iovs.uiovp->iov_base, (int)cp, acnt, 0,0);
- error = copyin(CAST_USER_ADDR_T(uio->uio_iovs.iov32p->iov_base), CAST_DOWN(caddr_t, cp), acnt);
+ error = copyin(uio->uio_iovs.uiovp->iov_base, CAST_DOWN(caddr_t, cp), acnt);
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_END,
- (int)uio->uio_iovs.iov32p->iov_base, (int)cp, acnt, 0,0);
+ (uintptr_t)uio->uio_iovs.uiovp->iov_base, (int)cp, acnt, 0,0);
}
if (error)
return (error);
case UIO_SYSSPACE32:
case UIO_SYSSPACE:
if (uio->uio_rw == UIO_READ)
- error = copywithin(CAST_DOWN(caddr_t, cp), (caddr_t)uio->uio_iovs.iov32p->iov_base,
+ error = copywithin(CAST_DOWN(caddr_t, cp), CAST_DOWN(caddr_t, uio->uio_iovs.kiovp->iov_base),
acnt);
else
- error = copywithin((caddr_t)uio->uio_iovs.iov32p->iov_base, CAST_DOWN(caddr_t, cp),
+ error = copywithin(CAST_DOWN(caddr_t, uio->uio_iovs.kiovp->iov_base), CAST_DOWN(caddr_t, cp),
acnt);
break;
case UIO_PHYS_USERSPACE64:
- if (uio->uio_rw == UIO_READ)
- {
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_START,
- (int)cp, (int)uio->uio_iovs.iov64p->iov_base, acnt, 1,0);
-
- error = copypv((addr64_t)cp, uio->uio_iovs.iov64p->iov_base, acnt, cppvPsrc | cppvNoRefSrc);
- if (error) /* Copy physical to virtual */
- error = EFAULT;
-
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_END,
- (int)cp, (int)uio->uio_iovs.iov64p->iov_base, acnt, 1,0);
- }
- else
- {
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_START,
- (int)uio->uio_iovs.iov64p->iov_base, (int)cp, acnt, 1,0);
-
- error = copypv(uio->uio_iovs.iov64p->iov_base, (addr64_t)cp, acnt, cppvPsnk | cppvNoRefSrc | cppvNoModSnk);
- if (error) /* Copy virtual to physical */
- error = EFAULT;
-
- KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_END,
- (int)uio->uio_iovs.iov64p->iov_base, (int)cp, acnt, 1,0);
- }
- if (error)
- return (error);
- break;
-
case UIO_PHYS_USERSPACE32:
case UIO_PHYS_USERSPACE:
if (uio->uio_rw == UIO_READ)
{
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_START,
- (int)cp, (int)uio->uio_iovs.iov32p->iov_base, acnt, 1,0);
+ (int)cp, (uintptr_t)uio->uio_iovs.uiovp->iov_base, acnt, 1,0);
- error = copypv((addr64_t)cp, (addr64_t)uio->uio_iovs.iov32p->iov_base, acnt, cppvPsrc | cppvNoRefSrc);
+ error = copypv((addr64_t)cp, uio->uio_iovs.uiovp->iov_base, acnt, cppvPsrc | cppvNoRefSrc);
if (error) /* Copy physical to virtual */
error = EFAULT;
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_END,
- (int)cp, (int)uio->uio_iovs.iov32p->iov_base, acnt, 1,0);
+ (int)cp, (uintptr_t)uio->uio_iovs.uiovp->iov_base, acnt, 1,0);
}
else
{
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_START,
- (int)uio->uio_iovs.iov32p->iov_base, (int)cp, acnt, 1,0);
+ (uintptr_t)uio->uio_iovs.uiovp->iov_base, (int)cp, acnt, 1,0);
- error = copypv((addr64_t)uio->uio_iovs.iov32p->iov_base, (addr64_t)cp, acnt, cppvPsnk | cppvNoRefSrc | cppvNoModSnk);
+ error = copypv(uio->uio_iovs.uiovp->iov_base, (addr64_t)cp, acnt, cppvPsnk | cppvNoRefSrc | cppvNoModSnk);
if (error) /* Copy virtual to physical */
error = EFAULT;
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_END,
- (int)uio->uio_iovs.iov32p->iov_base, (int)cp, acnt, 1,0);
+ (uintptr_t)uio->uio_iovs.uiovp->iov_base, (int)cp, acnt, 1,0);
}
if (error)
return (error);
break;
- case UIO_PHYS_SYSSPACE32:
case UIO_PHYS_SYSSPACE:
if (uio->uio_rw == UIO_READ)
{
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_START,
- (int)cp, (int)uio->uio_iovs.iov32p->iov_base, acnt, 2,0);
+ (int)cp, (uintptr_t)uio->uio_iovs.kiovp->iov_base, acnt, 2,0);
- error = copypv((addr64_t)cp, uio->uio_iovs.iov32p->iov_base, acnt, cppvKmap | cppvPsrc | cppvNoRefSrc);
+ error = copypv((addr64_t)cp, uio->uio_iovs.kiovp->iov_base, acnt, cppvKmap | cppvPsrc | cppvNoRefSrc);
if (error) /* Copy physical to virtual */
error = EFAULT;
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_END,
- (int)cp, (int)uio->uio_iovs.iov32p->iov_base, acnt, 2,0);
+ (int)cp, (uintptr_t)uio->uio_iovs.kiovp->iov_base, acnt, 2,0);
}
else
{
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_START,
- (int)uio->uio_iovs.iov32p->iov_base, (int)cp, acnt, 2,0);
+ (uintptr_t)uio->uio_iovs.kiovp->iov_base, (int)cp, acnt, 2,0);
- error = copypv(uio->uio_iovs.iov32p->iov_base, (addr64_t)cp, acnt, cppvKmap | cppvPsnk | cppvNoRefSrc | cppvNoModSnk);
+ error = copypv(uio->uio_iovs.kiovp->iov_base, (addr64_t)cp, acnt, cppvKmap | cppvPsnk | cppvNoRefSrc | cppvNoModSnk);
if (error) /* Copy virtual to physical */
error = EFAULT;
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_END,
- (int)uio->uio_iovs.iov32p->iov_base, (int)cp, acnt, 2,0);
+ (uintptr_t)uio->uio_iovs.kiovp->iov_base, (int)cp, acnt, 2,0);
}
if (error)
return (error);
default:
break;
}
- uio_iov_base_add(uio, acnt);
-#if LP64KERN
- uio_iov_len_add(uio, -((int64_t)acnt));
- uio_setresid(uio, (uio_resid(uio) - ((int64_t)acnt)));
-#else
- uio_iov_len_add(uio, -((int)acnt));
- uio_setresid(uio, (uio_resid(uio) - ((int)acnt)));
-#endif
- uio->uio_offset += acnt;
+ uio_update(uio, acnt);
cp += acnt;
n -= acnt;
}
* Give next character to user as result of read.
*/
int
-ureadc(c, uio)
- register int c;
- register struct uio *uio;
+ureadc(int c, struct uio *uio)
{
if (uio_resid(uio) <= 0)
panic("ureadc: non-positive resid");
-again:
+ uio_update(uio, 0);
if (uio->uio_iovcnt == 0)
panic("ureadc: non-positive iovcnt");
- if (uio_iov_len(uio) <= 0) {
- uio->uio_iovcnt--;
- uio_next_iov(uio);
- goto again;
- }
+ if (uio_curriovlen(uio) <= 0)
+ panic("ureadc: non-positive iovlen");
+
switch (uio->uio_segflg) {
case UIO_USERSPACE32:
case UIO_USERSPACE:
- if (subyte(CAST_USER_ADDR_T(uio->uio_iovs.iov32p->iov_base), c) < 0)
- return (EFAULT);
- break;
-
- case UIO_USERSPACE64:
- if (subyte((user_addr_t)uio->uio_iovs.iov64p->iov_base, c) < 0)
- return (EFAULT);
- break;
-
- case UIO_SYSSPACE32:
- case UIO_SYSSPACE:
- *((caddr_t)uio->uio_iovs.iov32p->iov_base) = c;
- break;
-
case UIO_USERISPACE32:
case UIO_USERISPACE:
- if (suibyte(CAST_USER_ADDR_T(uio->uio_iovs.iov32p->iov_base), c) < 0)
- return (EFAULT);
- break;
-
- default:
- break;
- }
- uio_iov_base_add(uio, 1);
- uio_iov_len_add(uio, -1);
- uio_setresid(uio, (uio_resid(uio) - 1));
- uio->uio_offset++;
- return (0);
-}
-
-#if defined(vax) || defined(ppc)
-/* unused except by ct.c, other oddities XXX */
-/*
- * Get next character written in by user from uio.
- */
-int
-uwritec(uio)
- uio_t uio;
-{
- register int c = 0;
-
- if (uio_resid(uio) <= 0)
- return (-1);
-again:
- if (uio->uio_iovcnt <= 0)
- panic("uwritec: non-positive iovcnt");
-
- if (uio_iov_len(uio) == 0) {
- uio_next_iov(uio);
- if (--uio->uio_iovcnt == 0)
- return (-1);
- goto again;
- }
- switch (uio->uio_segflg) {
-
- case UIO_USERSPACE32:
- case UIO_USERSPACE:
- c = fubyte(CAST_USER_ADDR_T(uio->uio_iovs.iov32p->iov_base));
- break;
-
case UIO_USERSPACE64:
- c = fubyte((user_addr_t)uio->uio_iovs.iov64p->iov_base);
+ case UIO_USERISPACE64:
+ if (subyte((user_addr_t)uio->uio_iovs.uiovp->iov_base, c) < 0)
+ return (EFAULT);
break;
case UIO_SYSSPACE32:
case UIO_SYSSPACE:
- c = *((caddr_t)uio->uio_iovs.iov32p->iov_base) & 0377;
- break;
-
- case UIO_USERISPACE32:
- case UIO_USERISPACE:
- c = fuibyte(CAST_USER_ADDR_T(uio->uio_iovs.iov32p->iov_base));
+ *(CAST_DOWN(caddr_t, uio->uio_iovs.kiovp->iov_base)) = c;
break;
default:
- c = 0; /* avoid uninitialized variable warning */
- panic("uwritec: bogus uio_segflg");
break;
}
- if (c < 0)
- return (-1);
- uio_iov_base_add(uio, 1);
- uio_iov_len_add(uio, -1);
- uio_setresid(uio, (uio_resid(uio) - 1));
- uio->uio_offset++;
- return (c);
+ uio_update(uio, 1);
+ return (0);
}
-#endif /* vax || ppc */
/*
* General routine to allocate a hash table.
*/
void *
-hashinit(elements, type, hashmask)
- int elements, type;
- u_long *hashmask;
+hashinit(int elements, int type, u_long *hashmask)
{
long hashsize;
LIST_HEAD(generic, generic) *hashtbl;
continue;
hashsize >>= 1;
MALLOC(hashtbl, struct generic *,
- (u_long)hashsize * sizeof(*hashtbl), type, M_WAITOK|M_ZERO);
+ hashsize * sizeof(*hashtbl), type, M_WAITOK|M_ZERO);
if (hashtbl != NULL) {
for (i = 0; i < hashsize; i++)
LIST_INIT(&hashtbl[i]);
{
#if DEBUG
if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ printf("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
}
/* if (IS_VALID_UIO_SEGFLG(a_uio->uio_segflg) == 0) { */
/* panic("%s :%d - invalid uio_segflg\n", __FILE__, __LINE__); */
return( 0 );
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
-#if 1 // LP64todo - remove this temp workaround once we go live with uio KPI
- return( (user_ssize_t)a_uio->uio_resid );
-#else
- return( a_uio->uio_resid_64 );
-#endif
- }
- return( (user_ssize_t)a_uio->uio_resid );
+ return( a_uio->uio_resid_64 );
}
/*
return;
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
-#if 1 // LP64todo - remove this temp workaround once we go live with uio KPI
- a_uio->uio_resid = (int)a_value;
-#else
- a_uio->uio_resid_64 = a_value;
-#endif
- }
- else {
- a_uio->uio_resid = (int)a_value;
- }
+ a_uio->uio_resid_64 = a_value;
return;
}
-#if 0 // obsolete
-/*
- * uio_proc_t - return the proc_t for the given uio_t
- * WARNING - This call is going away. Find another way to get the proc_t!!
- */
-__private_extern__ proc_t uio_proc_t( uio_t a_uio )
-{
-#if LP64_DEBUG
- if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
- }
-#endif /* LP64_DEBUG */
-
- /* return 0 if there are no active iovecs */
- if (a_uio == NULL) {
- return( NULL );
- }
- return( a_uio->uio_procp );
-}
-
-/*
- * uio_setproc_t - set the residual IO value for the given uio_t
- * WARNING - This call is going away.
- */
-__private_extern__ void uio_setproc_t( uio_t a_uio, proc_t a_proc_t )
-{
- if (a_uio == NULL) {
-#if LP64_DEBUG
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
-#endif /* LP64_DEBUG */
- return;
- }
-
- a_uio->uio_procp = a_proc_t;
- return;
-}
-#endif // obsolete
-
/*
* uio_curriovbase - return the base address of the current iovec associated
* with the given uio_t. May return 0.
return(0);
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
+ if (UIO_IS_USER_SPACE(a_uio)) {
return(a_uio->uio_iovs.uiovp->iov_base);
}
- return((user_addr_t)((uintptr_t)a_uio->uio_iovs.kiovp->iov_base));
+ return((user_addr_t)a_uio->uio_iovs.kiovp->iov_base);
}
return(0);
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
+ if (UIO_IS_USER_SPACE(a_uio)) {
return(a_uio->uio_iovs.uiovp->iov_len);
}
return((user_size_t)a_uio->uio_iovs.kiovp->iov_len);
return;
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
+ if (UIO_IS_USER_SPACE(a_uio)) {
a_uio->uio_iovs.uiovp->iov_len = a_value;
}
else {
int a_iodirection ) /* read or write flag */
{
void * my_buf_p;
- int my_size;
+ size_t my_size;
uio_t my_uio;
- my_size = sizeof(struct uio) + (sizeof(struct user_iovec) * a_iovcount);
+ my_size = UIO_SIZEOF(a_iovcount);
my_buf_p = kalloc(my_size);
my_uio = uio_createwithbuffer( a_iovcount,
a_offset,
/* leave a note that we allocated this uio_t */
my_uio->uio_flags |= UIO_FLAGS_WE_ALLOCED;
#if DEBUG
- hw_atomic_add(&uio_t_count, 1);
+ (void)hw_atomic_add(&uio_t_count, 1);
#endif
}
int a_spacetype, /* type of address space */
int a_iodirection, /* read or write flag */
void *a_buf_p, /* pointer to a uio_t buffer */
- int a_buffer_size ) /* size of uio_t buffer */
+ size_t a_buffer_size ) /* size of uio_t buffer */
{
uio_t my_uio = (uio_t) a_buf_p;
- int my_size;
+ size_t my_size;
- my_size = sizeof(struct uio) + (sizeof(struct user_iovec) * a_iovcount);
+ my_size = UIO_SIZEOF(a_iovcount);
if (a_buffer_size < my_size) {
#if DEBUG
panic("%s :%d - a_buffer_size is too small\n", __FILE__, __LINE__);
bzero(my_uio, my_size);
my_uio->uio_size = my_size;
- /* we use uio_segflg to indicate if the uio_t is the new format or */
- /* old (pre LP64 support) legacy format */
+ /*
+ * we use uio_segflg to indicate if the uio_t is the new format or
+ * old (pre LP64 support) legacy format
+ * This switch statement should canonicalize incoming space type
+ * to one of UIO_USERSPACE32/64, UIO_PHYS_USERSPACE32/64, or
+ * UIO_SYSSPACE/UIO_PHYS_SYSSPACE
+ */
switch (a_spacetype) {
case UIO_USERSPACE:
my_uio->uio_segflg = UIO_USERSPACE32;
- case UIO_SYSSPACE:
- my_uio->uio_segflg = UIO_SYSSPACE32;
+ break;
+ case UIO_SYSSPACE32:
+ my_uio->uio_segflg = UIO_SYSSPACE;
+ break;
case UIO_PHYS_USERSPACE:
my_uio->uio_segflg = UIO_PHYS_USERSPACE32;
- case UIO_PHYS_SYSSPACE:
- my_uio->uio_segflg = UIO_PHYS_SYSSPACE32;
+ break;
default:
my_uio->uio_segflg = a_spacetype;
break;
/*
* uio_spacetype - return the address space type for the given uio_t
*/
-int uio_spacetype( uio_t a_uio )
+__private_extern__ int uio_spacetype( uio_t a_uio )
{
if (a_uio == NULL) {
#if LP64_DEBUG
* which will increase as the IO is completed and is NOT embedded within the
* uio, it is a seperate array of one or more iovecs.
*/
-struct user_iovec * uio_iovsaddr( uio_t a_uio )
+__private_extern__ struct user_iovec * uio_iovsaddr( uio_t a_uio )
{
struct user_iovec * my_addr;
return(NULL);
}
- if (a_uio->uio_segflg == UIO_USERSPACE || a_uio->uio_segflg == UIO_SYSSPACE) {
+ if (UIO_SEG_IS_USER_SPACE(a_uio->uio_segflg)) {
/* we need this for compatibility mode. */
- my_addr = (struct user_iovec *) a_uio->uio_iovs.iovp;
+ my_addr = (struct user_iovec *) a_uio->uio_iovs.uiovp;
}
else {
- my_addr = (struct user_iovec *) (((uint8_t *)a_uio) + sizeof(struct uio));
+#if DEBUG
+ panic("uio_iovsaddr called for UIO_SYSSPACE request");
+#endif
+ my_addr = 0;
}
return(my_addr);
}
my_max_iovs = a_uio->uio_max_iovs;
bzero(a_uio, my_size);
a_uio->uio_size = my_size;
- a_uio->uio_segflg = a_spacetype;
+
+ /*
+ * we use uio_segflg to indicate if the uio_t is the new format or
+ * old (pre LP64 support) legacy format
+ * This switch statement should canonicalize incoming space type
+ * to one of UIO_USERSPACE32/64, UIO_PHYS_USERSPACE32/64, or
+ * UIO_SYSSPACE/UIO_PHYS_SYSSPACE
+ */
+ switch (a_spacetype) {
+ case UIO_USERSPACE:
+ a_uio->uio_segflg = UIO_USERSPACE32;
+ break;
+ case UIO_SYSSPACE32:
+ a_uio->uio_segflg = UIO_SYSSPACE;
+ break;
+ case UIO_PHYS_USERSPACE:
+ a_uio->uio_segflg = UIO_PHYS_USERSPACE32;
+ break;
+ default:
+ a_uio->uio_segflg = a_spacetype;
+ break;
+ }
+
if (my_max_iovs > 0) {
a_uio->uio_iovs.uiovp = (struct user_iovec *)
(((uint8_t *)a_uio) + sizeof(struct uio));
else {
a_uio->uio_iovs.uiovp = NULL;
}
+
a_uio->uio_max_iovs = my_max_iovs;
a_uio->uio_offset = a_offset;
a_uio->uio_rw = a_iodirection;
if (a_uio != NULL && (a_uio->uio_flags & UIO_FLAGS_WE_ALLOCED) != 0) {
#if DEBUG
- if ((int)(hw_atomic_sub(&uio_t_count, 1)) < 0) {
- panic("%s :%d - uio_t_count has gone negative\n", __FILE__, __LINE__);
- }
+ if (hw_atomic_sub(&uio_t_count, 1) == UINT_MAX)
+ panic("%s :%d - uio_t_count underflow\n", __FILE__, __LINE__);
#endif
kfree(a_uio, a_uio->uio_size);
}
return(-1);
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
+ if (UIO_IS_USER_SPACE(a_uio)) {
for ( i = 0; i < a_uio->uio_max_iovs; i++ ) {
if (a_uio->uio_iovs.uiovp[i].iov_len == 0 && a_uio->uio_iovs.uiovp[i].iov_base == 0) {
a_uio->uio_iovs.uiovp[i].iov_len = a_length;
a_uio->uio_iovs.uiovp[i].iov_base = a_baseaddr;
a_uio->uio_iovcnt++;
-#if 1 // LP64todo - remove this temp workaround once we go live with uio KPI
- a_uio->uio_resid += a_length;
-#else
a_uio->uio_resid_64 += a_length;
-#endif
return( 0 );
}
}
else {
for ( i = 0; i < a_uio->uio_max_iovs; i++ ) {
if (a_uio->uio_iovs.kiovp[i].iov_len == 0 && a_uio->uio_iovs.kiovp[i].iov_base == 0) {
- a_uio->uio_iovs.kiovp[i].iov_len = (u_int32_t)a_length;
- a_uio->uio_iovs.kiovp[i].iov_base = (u_int32_t)((uintptr_t)a_baseaddr);
+ a_uio->uio_iovs.kiovp[i].iov_len = (u_int64_t)a_length;
+ a_uio->uio_iovs.kiovp[i].iov_base = (u_int64_t)a_baseaddr;
a_uio->uio_iovcnt++;
- a_uio->uio_resid += a_length;
+ a_uio->uio_resid_64 += a_length;
return( 0 );
}
}
return(-1);
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
+ if (UIO_IS_USER_SPACE(a_uio)) {
if (a_baseaddr_p != NULL) {
*a_baseaddr_p = a_uio->uio_iovs.uiovp[a_index].iov_base;
}
return;
}
- a_uio->uio_iovcnt = 0;
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
-#if 1 // LP64todo - remove this temp workaround once we go live with uio KPI
- a_uio->uio_resid = 0;
-#else
+ a_uio->uio_iovcnt = a_uio->uio_max_iovs;
+ if (UIO_IS_USER_SPACE(a_uio)) {
a_uio->uio_resid_64 = 0;
-#endif
for ( i = 0; i < a_uio->uio_max_iovs; i++ ) {
if (a_uio->uio_iovs.uiovp[i].iov_len != 0 && a_uio->uio_iovs.uiovp[i].iov_base != 0) {
- a_uio->uio_iovcnt++;
-#if 1 // LP64todo - remove this temp workaround once we go live with uio KPI
- a_uio->uio_resid += a_uio->uio_iovs.uiovp[i].iov_len;
-#else
a_uio->uio_resid_64 += a_uio->uio_iovs.uiovp[i].iov_len;
-#endif
+ }
+ }
+
+ /* position to first non zero length iovec (4235922) */
+ while (a_uio->uio_iovcnt > 0 && a_uio->uio_iovs.uiovp->iov_len == 0) {
+ a_uio->uio_iovcnt--;
+ if (a_uio->uio_iovcnt > 0) {
+ a_uio->uio_iovs.uiovp++;
}
}
}
else {
- a_uio->uio_resid = 0;
+ a_uio->uio_resid_64 = 0;
for ( i = 0; i < a_uio->uio_max_iovs; i++ ) {
if (a_uio->uio_iovs.kiovp[i].iov_len != 0 && a_uio->uio_iovs.kiovp[i].iov_base != 0) {
- a_uio->uio_iovcnt++;
- a_uio->uio_resid += a_uio->uio_iovs.kiovp[i].iov_len;
+ a_uio->uio_resid_64 += a_uio->uio_iovs.kiovp[i].iov_len;
+ }
+ }
+
+ /* position to first non zero length iovec (4235922) */
+ while (a_uio->uio_iovcnt > 0 && a_uio->uio_iovs.kiovp->iov_len == 0) {
+ a_uio->uio_iovcnt--;
+ if (a_uio->uio_iovcnt > 0) {
+ a_uio->uio_iovs.kiovp++;
}
}
}
+
return;
}
* and increments the current iovec base address and offset value.
* If the current iovec length is 0 then advance to the next
* iovec (if any).
+ * If the a_count passed in is 0, than only do the advancement
+ * over any 0 length iovec's.
*/
void uio_update( uio_t a_uio, user_size_t a_count )
{
return;
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
- if (a_count > a_uio->uio_iovs.uiovp->iov_len) {
- a_uio->uio_iovs.uiovp->iov_base += a_uio->uio_iovs.uiovp->iov_len;
- a_uio->uio_iovs.uiovp->iov_len = 0;
- }
- else {
- a_uio->uio_iovs.uiovp->iov_base += a_count;
- a_uio->uio_iovs.uiovp->iov_len -= a_count;
- }
-#if 1 // LP64todo - remove this temp workaround once we go live with uio KPI
- if (a_uio->uio_resid < 0) {
- a_uio->uio_resid = 0;
- }
- if (a_count > (user_size_t)a_uio->uio_resid) {
- a_uio->uio_offset += a_uio->uio_resid;
- a_uio->uio_resid = 0;
- }
- else {
- a_uio->uio_offset += a_count;
- a_uio->uio_resid -= a_count;
- }
-#else
- if (a_uio->uio_resid_64 < 0) {
- a_uio->uio_resid_64 = 0;
- }
- if (a_count > (user_size_t)a_uio->uio_resid_64) {
- a_uio->uio_offset += a_uio->uio_resid_64;
- a_uio->uio_resid_64 = 0;
- }
- else {
- a_uio->uio_offset += a_count;
- a_uio->uio_resid_64 -= a_count;
+ if (UIO_IS_USER_SPACE(a_uio)) {
+ /*
+ * if a_count == 0, then we are asking to skip over
+ * any empty iovs
+ */
+ if (a_count) {
+ if (a_count > a_uio->uio_iovs.uiovp->iov_len) {
+ a_uio->uio_iovs.uiovp->iov_base += a_uio->uio_iovs.uiovp->iov_len;
+ a_uio->uio_iovs.uiovp->iov_len = 0;
+ }
+ else {
+ a_uio->uio_iovs.uiovp->iov_base += a_count;
+ a_uio->uio_iovs.uiovp->iov_len -= a_count;
+ }
+ if (a_uio->uio_resid_64 < 0) {
+ a_uio->uio_resid_64 = 0;
+ }
+ if (a_count > (user_size_t)a_uio->uio_resid_64) {
+ a_uio->uio_offset += a_uio->uio_resid_64;
+ a_uio->uio_resid_64 = 0;
+ }
+ else {
+ a_uio->uio_offset += a_count;
+ a_uio->uio_resid_64 -= a_count;
+ }
}
-#endif // LP64todo
-
- /* advance to next iovec if current one is totally consumed */
- while (a_uio->uio_iovcnt > 0 && a_uio->uio_iovs.uiovp->iov_len == 0) {
+ /*
+ * advance to next iovec if current one is totally consumed
+ */
+ while (a_uio->uio_iovcnt > 0 && a_uio->uio_iovs.uiovp->iov_len == 0) {
a_uio->uio_iovcnt--;
if (a_uio->uio_iovcnt > 0) {
a_uio->uio_iovs.uiovp++;
}
}
else {
- if (a_count > a_uio->uio_iovs.kiovp->iov_len) {
- a_uio->uio_iovs.kiovp->iov_base += a_uio->uio_iovs.kiovp->iov_len;
- a_uio->uio_iovs.kiovp->iov_len = 0;
- }
- else {
- a_uio->uio_iovs.kiovp->iov_base += a_count;
- a_uio->uio_iovs.kiovp->iov_len -= a_count;
- }
- if (a_uio->uio_resid < 0) {
- a_uio->uio_resid = 0;
- }
- if (a_count > (user_size_t)a_uio->uio_resid) {
- a_uio->uio_offset += a_uio->uio_resid;
- a_uio->uio_resid = 0;
- }
- else {
- a_uio->uio_offset += a_count;
- a_uio->uio_resid -= a_count;
+ /*
+ * if a_count == 0, then we are asking to skip over
+ * any empty iovs
+ */
+ if (a_count) {
+ if (a_count > a_uio->uio_iovs.kiovp->iov_len) {
+ a_uio->uio_iovs.kiovp->iov_base += a_uio->uio_iovs.kiovp->iov_len;
+ a_uio->uio_iovs.kiovp->iov_len = 0;
+ }
+ else {
+ a_uio->uio_iovs.kiovp->iov_base += a_count;
+ a_uio->uio_iovs.kiovp->iov_len -= a_count;
+ }
+ if (a_uio->uio_resid_64 < 0) {
+ a_uio->uio_resid_64 = 0;
+ }
+ if (a_count > (user_size_t)a_uio->uio_resid_64) {
+ a_uio->uio_offset += a_uio->uio_resid_64;
+ a_uio->uio_resid_64 = 0;
+ }
+ else {
+ a_uio->uio_offset += a_count;
+ a_uio->uio_resid_64 -= a_count;
+ }
}
-
- /* advance to next iovec if current one is totally consumed */
- while (a_uio->uio_iovcnt > 0 && a_uio->uio_iovs.kiovp->iov_len == 0) {
+ /*
+ * advance to next iovec if current one is totally consumed
+ */
+ while (a_uio->uio_iovcnt > 0 && a_uio->uio_iovs.kiovp->iov_len == 0) {
a_uio->uio_iovcnt--;
if (a_uio->uio_iovcnt > 0) {
a_uio->uio_iovs.kiovp++;
return;
}
+/*
+ * uio_pushback - undo uncommitted I/O by subtracting from the
+ * current base address and offset, and incrementing the residiual
+ * IO. If the UIO was previously exhausted, this call will panic.
+ * New code should not use this functionality.
+ */
+__private_extern__ void uio_pushback( uio_t a_uio, user_size_t a_count )
+{
+#if LP64_DEBUG
+ if (a_uio == NULL) {
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ }
+ if (UIO_IS_32_BIT_SPACE(a_uio) && a_count > 0xFFFFFFFFull) {
+ panic("%s :%d - invalid count value \n", __FILE__, __LINE__);
+ }
+#endif /* LP64_DEBUG */
+
+ if (a_uio == NULL || a_count == 0) {
+ return;
+ }
+
+ if (a_uio->uio_iovcnt < 1) {
+ panic("Invalid uio for pushback");
+ }
+
+ if (UIO_IS_USER_SPACE(a_uio)) {
+ a_uio->uio_iovs.uiovp->iov_base -= a_count;
+ a_uio->uio_iovs.uiovp->iov_len += a_count;
+ }
+ else {
+ a_uio->uio_iovs.kiovp->iov_base -= a_count;
+ a_uio->uio_iovs.kiovp->iov_len += a_count;
+ }
+
+ a_uio->uio_offset -= a_count;
+ a_uio->uio_resid_64 += a_count;
+
+ return;
+}
+
/*
* uio_duplicate - allocate a new uio and make a copy of the given uio_t.
/* advance to first nonzero iovec */
if (my_uio->uio_iovcnt > 0) {
for ( i = 0; i < my_uio->uio_max_iovs; i++ ) {
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
+ if (UIO_IS_USER_SPACE(a_uio)) {
if (my_uio->uio_iovs.uiovp->iov_len != 0) {
break;
}
}
}
+ my_uio->uio_flags = UIO_FLAGS_WE_ALLOCED | UIO_FLAGS_INITED;
+
return(my_uio);
}
+int copyin_user_iovec_array(user_addr_t uaddr, int spacetype, int count, struct user_iovec *dst)
+{
+ size_t size_of_iovec = ( spacetype == UIO_USERSPACE64 ? sizeof(struct user64_iovec) : sizeof(struct user32_iovec));
+ int error;
+ int i;
+
+ // copyin to the front of "dst", without regard for putting records in the right places
+ error = copyin(uaddr, dst, count * size_of_iovec);
+ if (error)
+ return (error);
+
+ // now, unpack the entries in reverse order, so we don't overwrite anything
+ for (i = count - 1; i >= 0; i--) {
+ if (spacetype == UIO_USERSPACE64) {
+ struct user64_iovec iovec = ((struct user64_iovec *)dst)[i];
+ dst[i].iov_base = iovec.iov_base;
+ dst[i].iov_len = iovec.iov_len;
+ } else {
+ struct user32_iovec iovec = ((struct user32_iovec *)dst)[i];
+ dst[i].iov_base = iovec.iov_base;
+ dst[i].iov_len = iovec.iov_len;
+ }
+ }
+
+ return (0);
+}
projects / apple / xnu.git / blobdiff