* Copyright (c) 2000-2006 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
* 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
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
* @(#)kern_subr.c 8.3 (Berkeley) 1/21/94
*/
+#include <machine/atomic.h>
+
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc_internal.h>
#if DEBUG
#include <kern/simple_lock.h>
-static uint32_t 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
int
uiomove(const char * cp, int n, uio_t uio)
{
- return uiomove64((const addr64_t)((const unsigned int)cp), n, uio);
+ return uiomove64((const addr64_t)(uintptr_t)cp, n, uio);
}
/*
* copywithin:EFAULT
* copypv:EFAULT
*/
- // LP64todo - fix this! 'n' should be int64_t?
int
uiomove64(const addr64_t c_cp, int n, struct uio *uio)
{
addr64_t cp = c_cp;
-#if LP64KERN
uint64_t acnt;
-#else
- u_int acnt;
-#endif
int error = 0;
#if DIAGNOSTIC
- if (uio->uio_rw != UIO_READ && uio->uio_rw != UIO_WRITE)
+ if (uio->uio_rw != UIO_READ && uio->uio_rw != UIO_WRITE) {
panic("uiomove: mode");
+ }
#endif
#if LP64_DEBUG
if (IS_VALID_UIO_SEGFLG(uio->uio_segflg) == 0) {
- panic("%s :%d - invalid uio_segflg\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_segflg\n", __FILE__, __LINE__);
}
#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)
+ if (n > 0 && acnt > (uint64_t)n) {
acnt = n;
+ }
- switch (uio->uio_segflg) {
-
+ switch ((int) uio->uio_segflg) {
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:
- 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);
-
- error = copyout( CAST_DOWN(caddr_t, cp), CAST_USER_ADDR_T(uio->uio_iovs.iov32p->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);
- }
- 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);
-
- error = copyin(CAST_USER_ADDR_T(uio->uio_iovs.iov32p->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);
- }
- if (error)
- return (error);
+ // 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, (uintptr_t)uio->uio_iovs.uiovp->iov_base, acnt, 0, 0);
+
+ error = copyout( CAST_DOWN(caddr_t, cp), uio->uio_iovs.uiovp->iov_base, (size_t)acnt );
+
+ KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_END,
+ (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,
+ (uintptr_t)uio->uio_iovs.uiovp->iov_base, (int)cp, acnt, 0, 0);
+
+ error = copyin(uio->uio_iovs.uiovp->iov_base, CAST_DOWN(caddr_t, cp), (size_t)acnt);
+
+ KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_END,
+ (uintptr_t)uio->uio_iovs.uiovp->iov_base, (int)cp, acnt, 0, 0);
+ }
+ if (error) {
+ return error;
+ }
break;
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,
- acnt);
- else
- error = copywithin((caddr_t)uio->uio_iovs.iov32p->iov_base, CAST_DOWN(caddr_t, cp),
- acnt);
+ if (uio->uio_rw == UIO_READ) {
+ error = copywithin(CAST_DOWN(caddr_t, cp), CAST_DOWN(caddr_t, uio->uio_iovs.kiovp->iov_base),
+ (size_t)acnt);
+ } else {
+ error = copywithin(CAST_DOWN(caddr_t, uio->uio_iovs.kiovp->iov_base), CAST_DOWN(caddr_t, cp),
+ (size_t)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);
-
- error = copypv((addr64_t)cp, (addr64_t)uio->uio_iovs.iov32p->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);
- }
- 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);
-
- error = copypv((addr64_t)uio->uio_iovs.iov32p->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);
- }
- if (error)
- return (error);
+ acnt = MIN(acnt, UINT_MAX);
+
+ if (uio->uio_rw == UIO_READ) {
+ KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_START,
+ (int)cp, (uintptr_t)uio->uio_iovs.uiovp->iov_base, acnt, 1, 0);
+
+ error = copypv((addr64_t)cp, uio->uio_iovs.uiovp->iov_base, (unsigned int)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, (uintptr_t)uio->uio_iovs.uiovp->iov_base, acnt, 1, 0);
+ } else {
+ KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_START,
+ (uintptr_t)uio->uio_iovs.uiovp->iov_base, (int)cp, acnt, 1, 0);
+
+ error = copypv(uio->uio_iovs.uiovp->iov_base, (addr64_t)cp, (unsigned int)acnt, cppvPsnk | cppvNoRefSrc | cppvNoModSnk);
+ if (error) { /* Copy virtual to physical */
+ error = EFAULT;
+ }
+
+ KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_END,
+ (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);
-
- error = copypv((addr64_t)cp, uio->uio_iovs.iov32p->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);
- }
- 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);
-
- error = copypv(uio->uio_iovs.iov32p->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);
- }
- if (error)
- return (error);
+ acnt = MIN(acnt, UINT_MAX);
+
+ if (uio->uio_rw == UIO_READ) {
+ KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYOUT)) | DBG_FUNC_START,
+ (int)cp, (uintptr_t)uio->uio_iovs.kiovp->iov_base, acnt, 2, 0);
+
+ error = copypv((addr64_t)cp, uio->uio_iovs.kiovp->iov_base, (unsigned int)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, (uintptr_t)uio->uio_iovs.kiovp->iov_base, acnt, 2, 0);
+ } else {
+ KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, DBG_UIO_COPYIN)) | DBG_FUNC_START,
+ (uintptr_t)uio->uio_iovs.kiovp->iov_base, (int)cp, acnt, 2, 0);
+
+ error = copypv(uio->uio_iovs.kiovp->iov_base, (addr64_t)cp, (unsigned int)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,
+ (uintptr_t)uio->uio_iovs.kiovp->iov_base, (int)cp, acnt, 2, 0);
+ }
+ if (error) {
+ return error;
+ }
break;
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, (user_size_t)acnt);
cp += acnt;
n -= acnt;
}
- return (error);
+ return error;
}
/*
int
ureadc(int c, struct uio *uio)
{
- if (uio_resid(uio) <= 0)
+ if (uio_resid(uio) <= 0) {
panic("ureadc: non-positive resid");
-again:
- if (uio->uio_iovcnt == 0)
+ }
+ 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;
}
- switch (uio->uio_segflg) {
+ if (uio_curriovlen(uio) <= 0) {
+ panic("ureadc: non-positive iovlen");
+ }
+ switch ((int) 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_t uio)
-{
- 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)) = (char)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 */
+
+LIST_HEAD(generic_hash_head, generic);
/*
* General routine to allocate a hash table.
*/
void *
-hashinit(int elements, int type, u_long *hashmask)
+hashinit(int elements, int type __unused, u_long *hashmask)
{
- long hashsize;
- LIST_HEAD(generic, generic) *hashtbl;
- int i;
+ struct generic_hash_head *hashtbl;
+ vm_size_t hashsize;
- if (elements <= 0)
+ if (elements <= 0) {
panic("hashinit: bad cnt");
- for (hashsize = 1; hashsize <= elements; hashsize <<= 1)
- continue;
- hashsize >>= 1;
- MALLOC(hashtbl, struct generic *,
- (u_long)hashsize * sizeof(*hashtbl), type, M_WAITOK|M_ZERO);
+ }
+
+ hashsize = 1UL << (fls(elements) - 1);
+ hashtbl = kheap_alloc(KHEAP_DEFAULT, hashsize * sizeof(*hashtbl),
+ Z_WAITOK | Z_ZERO);
if (hashtbl != NULL) {
- for (i = 0; i < hashsize; i++)
- LIST_INIT(&hashtbl[i]);
*hashmask = hashsize - 1;
}
- return (hashtbl);
+ return hashtbl;
+}
+
+void
+hashdestroy(void *hash, int type __unused, u_long hashmask)
+{
+ struct generic_hash_head *hashtbl = hash;
+ assert(powerof2(hashmask + 1));
+ kheap_free(KHEAP_DEFAULT, hashtbl, (hashmask + 1) * sizeof(*hashtbl));
}
/*
* uio_resid - return the residual IO value for the given uio_t
*/
-user_ssize_t uio_resid( uio_t a_uio )
+user_ssize_t
+uio_resid( uio_t a_uio )
{
#if DEBUG
if (a_uio == NULL) {
- printf("%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__); */
-/* } */
+/* if (IS_VALID_UIO_SEGFLG(a_uio->uio_segflg) == 0) { */
+/* panic("%s :%d - invalid uio_segflg\n", __FILE__, __LINE__); */
+/* } */
#endif /* DEBUG */
/* return 0 if there are no active iovecs */
if (a_uio == NULL) {
- return( 0 );
+ 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;
}
/*
* uio_setresid - set the residual IO value for the given uio_t
*/
-void uio_setresid( uio_t a_uio, user_ssize_t a_value )
+void
+uio_setresid( uio_t a_uio, user_ssize_t a_value )
{
#if DEBUG
if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%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__); */
-/* } */
+/* if (IS_VALID_UIO_SEGFLG(a_uio->uio_segflg) == 0) { */
+/* panic("%s :%d - invalid uio_segflg\n", __FILE__, __LINE__); */
+/* } */
#endif /* DEBUG */
if (a_uio == NULL) {
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;
}
/*
- * uio_curriovbase - return the base address of the current iovec associated
+ * uio_curriovbase - return the base address of the current iovec associated
* with the given uio_t. May return 0.
*/
-user_addr_t uio_curriovbase( uio_t a_uio )
+user_addr_t
+uio_curriovbase( uio_t a_uio )
{
#if LP64_DEBUG
if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
if (a_uio == NULL || a_uio->uio_iovcnt < 1) {
- return(0);
+ return 0;
}
-
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
- return(a_uio->uio_iovs.uiovp->iov_base);
+
+ 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;
}
/*
- * uio_curriovlen - return the length value of the current iovec associated
+ * uio_curriovlen - return the length value of the current iovec associated
* with the given uio_t.
*/
-user_size_t uio_curriovlen( uio_t a_uio )
+user_size_t
+uio_curriovlen( uio_t a_uio )
{
#if LP64_DEBUG
if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
if (a_uio == NULL || a_uio->uio_iovcnt < 1) {
- return(0);
+ return 0;
}
-
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
- return(a_uio->uio_iovs.uiovp->iov_len);
+
+ 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 (user_size_t)a_uio->uio_iovs.kiovp->iov_len;
}
/*
- * uio_setcurriovlen - set the length value of the current iovec associated
+ * uio_setcurriovlen - set the length value of the current iovec associated
* with the given uio_t.
*/
-__private_extern__ void uio_setcurriovlen( uio_t a_uio, user_size_t a_value )
+__private_extern__ void
+uio_setcurriovlen( uio_t a_uio, user_size_t a_value )
{
#if LP64_DEBUG
if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
if (a_uio == NULL) {
- return;
+ 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 {
+ } else {
#if LP64_DEBUG
if (a_value > 0xFFFFFFFFull) {
- panic("%s :%d - invalid a_value\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid a_value\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
a_uio->uio_iovs.kiovp->iov_len = (size_t)a_value;
/*
* uio_iovcnt - return count of active iovecs for the given uio_t
*/
-int uio_iovcnt( uio_t a_uio )
+int
+uio_iovcnt( uio_t a_uio )
{
#if LP64_DEBUG
if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
if (a_uio == NULL) {
- return(0);
+ return 0;
}
- return( a_uio->uio_iovcnt );
+ return a_uio->uio_iovcnt;
}
/*
* uio_offset - return the current offset value for the given uio_t
*/
-off_t uio_offset( uio_t a_uio )
+off_t
+uio_offset( uio_t a_uio )
{
#if LP64_DEBUG
if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
if (a_uio == NULL) {
- return(0);
+ return 0;
}
- return( a_uio->uio_offset );
+ return a_uio->uio_offset;
}
/*
* uio_setoffset - set the current offset value for the given uio_t
*/
-void uio_setoffset( uio_t a_uio, off_t a_offset )
+void
+uio_setoffset( uio_t a_uio, off_t a_offset )
{
#if LP64_DEBUG
if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
if (a_uio == NULL) {
- return;
+ return;
}
a_uio->uio_offset = a_offset;
return;
/*
* uio_rw - return the read / write flag for the given uio_t
*/
-int uio_rw( uio_t a_uio )
+int
+uio_rw( uio_t a_uio )
{
#if LP64_DEBUG
if (a_uio == NULL) {
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
if (a_uio == NULL) {
- return(-1);
+ return -1;
}
- return( a_uio->uio_rw );
+ return a_uio->uio_rw;
}
/*
* uio_setrw - set the read / write flag for the given uio_t
*/
-void uio_setrw( uio_t a_uio, int a_value )
+void
+uio_setrw( uio_t a_uio, int a_value )
{
if (a_uio == NULL) {
#if LP64_DEBUG
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
#endif /* LP64_DEBUG */
return;
}
#if LP64_DEBUG
if (!(a_value == UIO_READ || a_value == UIO_WRITE)) {
- panic("%s :%d - invalid a_value\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid a_value\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
}
/*
- * uio_isuserspace - return non zero value if the address space
+ * uio_isuserspace - return non zero value if the address space
* flag is for a user address space (could be 32 or 64 bit).
*/
-int uio_isuserspace( uio_t a_uio )
+int
+uio_isuserspace( uio_t a_uio )
{
if (a_uio == NULL) {
#if LP64_DEBUG
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
#endif /* LP64_DEBUG */
- return(0);
+ return 0;
}
if (UIO_SEG_IS_USER_SPACE(a_uio->uio_segflg)) {
- return( 1 );
+ return 1;
}
- return( 0 );
+ return 0;
}
/*
* uio_create - create an uio_t.
- * Space is allocated to hold up to a_iovcount number of iovecs. The uio_t
+ * Space is allocated to hold up to a_iovcount number of iovecs. The uio_t
* is not fully initialized until all iovecs are added using uio_addiov calls.
* a_iovcount is the maximum number of iovecs you may add.
*/
-uio_t uio_create( int a_iovcount, /* number of iovecs */
- off_t a_offset, /* current offset */
- int a_spacetype, /* type of address space */
- int a_iodirection ) /* read or write flag */
+uio_t
+uio_create( int a_iovcount, /* number of iovecs */
+ off_t a_offset, /* current offset */
+ int a_spacetype, /* type of address space */
+ int a_iodirection ) /* read or write flag */
{
- void * my_buf_p;
- int my_size;
- uio_t my_uio;
-
+ void * my_buf_p;
+ size_t my_size;
+ uio_t my_uio;
+
my_size = UIO_SIZEOF(a_iovcount);
my_buf_p = kalloc(my_size);
- my_uio = uio_createwithbuffer( a_iovcount,
- a_offset,
- a_spacetype,
- a_iodirection,
- my_buf_p,
- my_size );
+ my_uio = uio_createwithbuffer( a_iovcount,
+ a_offset,
+ a_spacetype,
+ a_iodirection,
+ my_buf_p,
+ my_size );
if (my_uio != 0) {
/* leave a note that we allocated this uio_t */
my_uio->uio_flags |= UIO_FLAGS_WE_ALLOCED;
#if DEBUG
- (void)hw_atomic_add(&uio_t_count, 1);
+ os_atomic_inc(&uio_t_count, relaxed);
#endif
}
-
- return( my_uio );
+
+ return my_uio;
}
/*
* uio_createwithbuffer - create an uio_t.
- * Create a uio_t using the given buffer. The uio_t
+ * Create a uio_t using the given buffer. The uio_t
* is not fully initialized until all iovecs are added using uio_addiov calls.
* a_iovcount is the maximum number of iovecs you may add.
* This call may fail if the given buffer is not large enough.
*/
-__private_extern__ uio_t
- uio_createwithbuffer( int a_iovcount, /* number of iovecs */
- off_t a_offset, /* current offset */
- 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 */
+__private_extern__ uio_t
+uio_createwithbuffer( int a_iovcount, /* number of iovecs */
+ off_t a_offset, /* current offset */
+ int a_spacetype, /* type of address space */
+ int a_iodirection, /* read or write flag */
+ void *a_buf_p, /* pointer to a 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;
-
- my_size = sizeof(struct uio) + (sizeof(struct user_iovec) * a_iovcount);
+ uio_t my_uio = (uio_t) a_buf_p;
+ size_t my_size;
+
+ assert(a_iovcount >= 0 && a_iovcount <= UIO_MAXIOV);
+ if (a_iovcount < 0 || a_iovcount > UIO_MAXIOV) {
+ return NULL;
+ }
+
+ my_size = UIO_SIZEOF(a_iovcount);
+ assert(a_buffer_size >= my_size);
if (a_buffer_size < my_size) {
-#if DEBUG
- panic("%s :%d - a_buffer_size is too small\n", __FILE__, __LINE__);
-#endif /* DEBUG */
- return( NULL );
+ return NULL;
}
my_size = a_buffer_size;
-
-#if DEBUG
- if (my_uio == 0) {
- panic("%s :%d - could not allocate uio_t\n", __FILE__, __LINE__);
- }
- if (!IS_VALID_UIO_SEGFLG(a_spacetype)) {
- panic("%s :%d - invalid address space type\n", __FILE__, __LINE__);
- }
- if (!(a_iodirection == UIO_READ || a_iodirection == UIO_WRITE)) {
- panic("%s :%d - invalid IO direction flag\n", __FILE__, __LINE__);
- }
- if (a_iovcount > UIO_MAXIOV) {
- panic("%s :%d - invalid a_iovcount\n", __FILE__, __LINE__);
+
+ assert(my_size <= INT_MAX);
+ if (my_size > INT_MAX) {
+ return NULL;
}
-#endif /* DEBUG */
- bzero(my_uio, my_size);
- my_uio->uio_size = my_size;
+ assert(my_uio != NULL);
+ assert(IS_VALID_UIO_SEGFLG(a_spacetype));
+ assert(a_iodirection == UIO_READ || a_iodirection == UIO_WRITE);
- /* we use uio_segflg to indicate if the uio_t is the new format or */
- /* old (pre LP64 support) legacy format */
+ bzero(my_uio, my_size);
+ my_uio->uio_size = (int)my_size;
+
+ /*
+ * 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;
if (a_iovcount > 0) {
my_uio->uio_iovs.uiovp = (struct user_iovec *)
- (((uint8_t *)my_uio) + sizeof(struct uio));
- }
- else {
+ (((uint8_t *)my_uio) + sizeof(struct uio));
+ } else {
my_uio->uio_iovs.uiovp = NULL;
}
my_uio->uio_rw = a_iodirection;
my_uio->uio_flags = UIO_FLAGS_INITED;
- return( my_uio );
+ return my_uio;
}
/*
* 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
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
#endif /* LP64_DEBUG */
- return(-1);
+ return -1;
}
- return( a_uio->uio_segflg );
+ return a_uio->uio_segflg;
}
/*
* 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;
-
+ struct user_iovec * my_addr;
+
if (a_uio == NULL) {
- return(NULL);
+ 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;
- }
- else {
- my_addr = (struct user_iovec *) (((uint8_t *)a_uio) + sizeof(struct uio));
+ my_addr = (struct user_iovec *) a_uio->uio_iovs.uiovp;
+ } else {
+#if DEBUG
+ panic("uio_iovsaddr called for UIO_SYSSPACE request");
+#endif
+ my_addr = 0;
}
- return(my_addr);
+ return my_addr;
}
/*
* uio_reset - reset an uio_t.
- * Reset the given uio_t to initial values. The uio_t is not fully initialized
- * until all iovecs are added using uio_addiov calls.
- * The a_iovcount value passed in the uio_create is the maximum number of
+ * Reset the given uio_t to initial values. The uio_t is not fully initialized
+ * until all iovecs are added using uio_addiov calls.
+ * The a_iovcount value passed in the uio_create is the maximum number of
* iovecs you may add.
*/
-void uio_reset( uio_t a_uio,
- off_t a_offset, /* current offset */
- int a_spacetype, /* type of address space */
- int a_iodirection ) /* read or write flag */
+void
+uio_reset( uio_t a_uio,
+ off_t a_offset, /* current offset */
+ int a_spacetype, /* type of address space */
+ int a_iodirection ) /* read or write flag */
{
- vm_size_t my_size;
- int my_max_iovs;
- u_int32_t my_old_flags;
-
+ vm_size_t my_size;
+ int my_max_iovs;
+ u_int32_t my_old_flags;
+
#if LP64_DEBUG
if (a_uio == NULL) {
- panic("%s :%d - could not allocate uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - could not allocate uio_t\n", __FILE__, __LINE__);
}
if (!IS_VALID_UIO_SEGFLG(a_spacetype)) {
- panic("%s :%d - invalid address space type\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid address space type\n", __FILE__, __LINE__);
}
if (!(a_iodirection == UIO_READ || a_iodirection == UIO_WRITE)) {
- panic("%s :%d - invalid IO direction flag\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid IO direction flag\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
my_old_flags = a_uio->uio_flags;
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;
+ a_uio->uio_size = (int)my_size;
+
+ /*
+ * 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 {
+ (((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;
/*
* uio_free - free a uio_t allocated via uio_init. this also frees all
- * associated iovecs.
+ * associated iovecs.
*/
-void uio_free( uio_t a_uio )
+void
+uio_free( uio_t a_uio )
{
#if DEBUG
if (a_uio == NULL) {
- panic("%s :%d - passing NULL uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - passing NULL uio_t\n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
if (a_uio != NULL && (a_uio->uio_flags & UIO_FLAGS_WE_ALLOCED) != 0) {
#if DEBUG
- if (hw_atomic_sub(&uio_t_count, 1) == UINT_MAX)
- panic("%s :%d - uio_t_count underflow\n", __FILE__, __LINE__);
+ if (os_atomic_dec_orig(&uio_t_count, relaxed) == 0) {
+ panic("%s :%d - uio_t_count underflow\n", __FILE__, __LINE__);
+ }
#endif
kfree(a_uio, a_uio->uio_size);
}
-
-
}
/*
* uio_addiov - add an iovec to the given uio_t. You may call this up to
- * the a_iovcount number that was passed to uio_create. This call will
- * increment the residual IO count as iovecs are added to the uio_t.
+ * the a_iovcount number that was passed to uio_create. This call will
+ * increment the residual IO count as iovecs are added to the uio_t.
* returns 0 if add was successful else non zero.
*/
-int uio_addiov( uio_t a_uio, user_addr_t a_baseaddr, user_size_t a_length )
+int
+uio_addiov( uio_t a_uio, user_addr_t a_baseaddr, user_size_t a_length )
{
- int i;
-
+ int i;
+ user_size_t resid;
+
if (a_uio == NULL) {
#if DEBUG
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
-#endif /* LP64_DEBUG */
- return(-1);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+#endif
+ return -1;
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
- for ( i = 0; i < a_uio->uio_max_iovs; i++ ) {
+ if (os_add_overflow(a_length, a_uio->uio_resid_64, &resid)) {
+#if DEBUG
+ panic("%s :%d - invalid length %lu\n", __FILE__, __LINE__, (unsigned long)a_length);
+#endif
+ return -1;
+ }
+
+ 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 );
+ a_uio->uio_resid_64 = resid;
+ return 0;
}
}
- }
- else {
- for ( i = 0; i < a_uio->uio_max_iovs; i++ ) {
+ } 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;
- return( 0 );
+ a_uio->uio_resid_64 = resid;
+ return 0;
}
}
}
- return( -1 );
+ return -1;
}
/*
* uio_getiov - get iovec data associated with the given uio_t. Use
* a_index to iterate over each iovec (0 to (uio_iovcnt(uio_t) - 1)).
* a_baseaddr_p and a_length_p may be NULL.
- * returns -1 when a_index is >= uio_t.uio_iovcnt or invalid uio_t.
+ * returns -1 when a_index is >= uio_t.uio_iovcnt or invalid uio_t.
* returns 0 when data is returned.
*/
-int uio_getiov( uio_t a_uio,
- int a_index,
- user_addr_t * a_baseaddr_p,
- user_size_t * a_length_p )
+int
+uio_getiov( uio_t a_uio,
+ int a_index,
+ user_addr_t * a_baseaddr_p,
+ user_size_t * a_length_p )
{
if (a_uio == NULL) {
#if DEBUG
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
#endif /* DEBUG */
- return(-1);
- }
- if ( a_index < 0 || a_index >= a_uio->uio_iovcnt) {
- return(-1);
- }
-
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
- if (a_baseaddr_p != NULL) {
- *a_baseaddr_p = a_uio->uio_iovs.uiovp[a_index].iov_base;
- }
- if (a_length_p != NULL) {
- *a_length_p = a_uio->uio_iovs.uiovp[a_index].iov_len;
- }
- }
- else {
- if (a_baseaddr_p != NULL) {
- *a_baseaddr_p = a_uio->uio_iovs.kiovp[a_index].iov_base;
- }
- if (a_length_p != NULL) {
- *a_length_p = a_uio->uio_iovs.kiovp[a_index].iov_len;
- }
- }
-
- return( 0 );
+ return -1;
+ }
+ if (a_index < 0 || a_index >= a_uio->uio_iovcnt) {
+ return -1;
+ }
+
+ if (UIO_IS_USER_SPACE(a_uio)) {
+ if (a_baseaddr_p != NULL) {
+ *a_baseaddr_p = a_uio->uio_iovs.uiovp[a_index].iov_base;
+ }
+ if (a_length_p != NULL) {
+ *a_length_p = a_uio->uio_iovs.uiovp[a_index].iov_len;
+ }
+ } else {
+ if (a_baseaddr_p != NULL) {
+ *a_baseaddr_p = (user_addr_t)a_uio->uio_iovs.kiovp[a_index].iov_base;
+ }
+ if (a_length_p != NULL) {
+ *a_length_p = (user_size_t)a_uio->uio_iovs.kiovp[a_index].iov_len;
+ }
+ }
+
+ return 0;
}
/*
* uio_calculateresid - runs through all iovecs associated with this
* uio_t and calculates (and sets) the residual IO count.
*/
-__private_extern__ void uio_calculateresid( uio_t a_uio )
+__private_extern__ int
+uio_calculateresid( uio_t a_uio )
{
- int i;
-
+ int i;
+ u_int64_t resid = 0;
+
if (a_uio == NULL) {
#if LP64_DEBUG
- panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
+ panic("%s :%d - invalid uio_t\n", __FILE__, __LINE__);
#endif /* LP64_DEBUG */
- return;
+ return EINVAL;
}
a_uio->uio_iovcnt = a_uio->uio_max_iovs;
- 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
+ if (UIO_IS_USER_SPACE(a_uio)) {
a_uio->uio_resid_64 = 0;
-#endif
- for ( i = 0; i < a_uio->uio_max_iovs; i++ ) {
+ 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) {
-#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
+ if (a_uio->uio_iovs.uiovp[i].iov_len > LONG_MAX) {
+ return EINVAL;
+ }
+ resid += a_uio->uio_iovs.uiovp[i].iov_len;
+ if (resid > LONG_MAX) {
+ return EINVAL;
+ }
}
}
+ a_uio->uio_resid_64 = (user_size_t)resid;
/* 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_iovs.uiovp++;
}
}
- }
- else {
- a_uio->uio_resid = 0;
- for ( i = 0; i < a_uio->uio_max_iovs; i++ ) {
+ } else {
+ 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_resid += a_uio->uio_iovs.kiovp[i].iov_len;
+ if (a_uio->uio_iovs.kiovp[i].iov_len > LONG_MAX) {
+ return EINVAL;
+ }
+ resid += a_uio->uio_iovs.kiovp[i].iov_len;
+ if (resid > LONG_MAX) {
+ return EINVAL;
+ }
}
}
+ a_uio->uio_resid_64 = (user_size_t)resid;
/* position to first non zero length iovec (4235922) */
while (a_uio->uio_iovcnt > 0 && a_uio->uio_iovs.kiovp->iov_len == 0) {
}
}
- return;
+ return 0;
}
/*
* uio_update - update the given uio_t for a_count of completed IO.
* This call decrements the current iovec length and residual IO value
- * and increments the current iovec base address and offset value.
+ * 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
+ * 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 )
+void
+uio_update( 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__);
+ 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__);
+ panic("%s :%d - invalid count value \n", __FILE__, __LINE__);
}
#endif /* LP64_DEBUG */
return;
}
- if (UIO_IS_64_BIT_SPACE(a_uio)) {
- /*
+ 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;
+ 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;
+ } 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_offset += a_uio->uio_resid_64;
a_uio->uio_resid_64 = 0;
- }
- else {
- a_uio->uio_offset += a_count;
+ } 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
a_uio->uio_iovs.uiovp++;
}
}
- }
- else {
- /*
+ } else {
+ /*
* 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;
+ 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;
+ } 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 > (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;
}
}
/*
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.
* may return NULL.
*/
-uio_t uio_duplicate( uio_t a_uio )
+uio_t
+uio_duplicate( uio_t a_uio )
{
- uio_t my_uio;
- int i;
+ uio_t my_uio;
+ int i;
if (a_uio == NULL) {
- return(NULL);
+ return NULL;
}
-
+
my_uio = (uio_t) kalloc(a_uio->uio_size);
if (my_uio == 0) {
- panic("%s :%d - allocation failed\n", __FILE__, __LINE__);
+ panic("%s :%d - allocation failed\n", __FILE__, __LINE__);
}
-
+
bcopy((void *)a_uio, (void *)my_uio, a_uio->uio_size);
/* need to set our iovec pointer to point to first active iovec */
if (my_uio->uio_max_iovs > 0) {
my_uio->uio_iovs.uiovp = (struct user_iovec *)
- (((uint8_t *)my_uio) + sizeof(struct uio));
+ (((uint8_t *)my_uio) + sizeof(struct uio));
/* 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)) {
+ for (i = 0; i < my_uio->uio_max_iovs; i++) {
+ if (UIO_IS_USER_SPACE(a_uio)) {
if (my_uio->uio_iovs.uiovp->iov_len != 0) {
break;
}
my_uio->uio_iovs.uiovp++;
- }
- else {
+ } else {
if (my_uio->uio_iovs.kiovp->iov_len != 0) {
break;
}
}
my_uio->uio_flags = UIO_FLAGS_WE_ALLOCED | UIO_FLAGS_INITED;
+#if DEBUG
+ os_atomic_inc(&uio_t_count, relaxed);
+#endif
+
- return(my_uio);
+ 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 = (user_addr_t)iovec.iov_base;
+ dst[i].iov_len = (user_size_t)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