* Copyright (c) 2016 Apple 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@
*/
#include <string.h>
#include "kxld_splitinfolc.h"
/*******************************************************************************
- *******************************************************************************/
+*******************************************************************************/
void
kxld_splitinfolc_init_from_macho(KXLDsplitinfolc *splitinfolc, struct linkedit_data_command *src)
{
- check(splitinfolc);
- check(src);
+ check(splitinfolc);
+ check(src);
- splitinfolc->cmdsize = src->cmdsize;
- splitinfolc->dataoff = src->dataoff;
- splitinfolc->datasize = src->datasize;
- splitinfolc->has_splitinfolc = TRUE;
+ splitinfolc->cmdsize = src->cmdsize;
+ splitinfolc->dataoff = src->dataoff;
+ splitinfolc->datasize = src->datasize;
+ splitinfolc->has_splitinfolc = TRUE;
}
/*******************************************************************************
- *******************************************************************************/
+*******************************************************************************/
void
kxld_splitinfolc_clear(KXLDsplitinfolc *splitinfolc)
{
- bzero(splitinfolc, sizeof(*splitinfolc));
+ bzero(splitinfolc, sizeof(*splitinfolc));
}
/*******************************************************************************
- *******************************************************************************/
+*******************************************************************************/
u_long
kxld_splitinfolc_get_macho_header_size(void)
{
- return sizeof(struct linkedit_data_command);
+ return sizeof(struct linkedit_data_command);
}
/*******************************************************************************
- *******************************************************************************/
+*******************************************************************************/
kern_return_t
kxld_splitinfolc_export_macho(const KXLDsplitinfolc *splitinfolc,
- splitKextLinkInfo *linked_object,
- u_long *header_offset,
- u_long header_size,
- u_long *data_offset,
- u_long size)
+ splitKextLinkInfo *linked_object,
+ u_long *header_offset,
+ u_long header_size,
+ u_long *data_offset,
+ u_long size)
{
kern_return_t rval = KERN_FAILURE;
struct linkedit_data_command *splitinfolc_hdr = NULL;
buf = (u_char *)(linked_object->linkedKext);
require_action(sizeof(*splitinfolc_hdr) <= header_size - *header_offset,
- finish,
- rval=KERN_FAILURE);
+ finish,
+ rval = KERN_FAILURE);
splitinfolc_hdr = (struct linkedit_data_command *)((void *)(buf + *header_offset));
*header_offset += sizeof(*splitinfolc_hdr);
- if (buf + *data_offset > buf + size) {
- kxld_log(kKxldLogLinking, kKxldLogErr,
- "\n OVERFLOW! linkedKext %p to %p (%lu) copy %p to %p (%u) <%s>",
- (void *) buf,
- (void *) (buf + size),
- size,
- (void *) (buf + *data_offset),
- (void *) (buf + *data_offset + splitinfolc->datasize),
- splitinfolc->datasize,
- __func__);
- goto finish;
- }
-
+ if (buf + *data_offset > buf + size) {
+ kxld_log(kKxldLogLinking, kKxldLogErr,
+ "\n OVERFLOW! linkedKext %p to %p (%lu) copy %p to %p (%u) <%s>",
+ (void *) buf,
+ (void *) (buf + size),
+ size,
+ (void *) (buf + *data_offset),
+ (void *) (buf + *data_offset + splitinfolc->datasize),
+ splitinfolc->datasize,
+ __func__);
+ goto finish;
+ }
+
// copy in the split info reloc data from kextExecutable. For example dataoff
// in LC_SEGMENT_SPLIT_INFO load command points to the reloc data in the
// __LINKEDIT segment. In this case 65768 into the kextExecutable file is
// dataoff 65768
// datasize 920
-
+
memcpy(buf + *data_offset, linked_object->kextExecutable + splitinfolc->dataoff, splitinfolc->datasize);
#if SPLIT_KEXTS_DEBUG
- u_char *dataPtr = buf + *data_offset;
-
- kxld_log(kKxldLogLinking, kKxldLogErr,
- "\n\n linkedKext %p to %p (%lu) copy %p to %p (%u) <%s>",
- (void *) buf,
- (void *) (buf + size),
- size,
- (void *) (dataPtr),
- (void *) (dataPtr + splitinfolc->datasize),
- splitinfolc->datasize,
- __func__);
-
- if (*(dataPtr + 0) != 0x7F) {
- kxld_log(kKxldLogLinking, kKxldLogErr,
- "\n\n bad LC_SEGMENT_SPLIT_INFO: 0x%02X %02X %02X %02X %02X %02X %02X %02X at %p (buf %p + %lu) <%s>",
- *(dataPtr +0),
- *(dataPtr +1),
- *(dataPtr +2),
- *(dataPtr +3),
- *(dataPtr +4),
- *(dataPtr +5),
- *(dataPtr +6),
- *(dataPtr +7),
- (void *) dataPtr,
- (void *) buf,
- *data_offset, __func__);
- }
+ u_char *dataPtr = buf + *data_offset;
+
+ kxld_log(kKxldLogLinking, kKxldLogErr,
+ "\n\n linkedKext %p to %p (%lu) copy %p to %p (%u) <%s>",
+ (void *) buf,
+ (void *) (buf + size),
+ size,
+ (void *) (dataPtr),
+ (void *) (dataPtr + splitinfolc->datasize),
+ splitinfolc->datasize,
+ __func__);
+
+ if (*(dataPtr + 0) != 0x7F) {
+ kxld_log(kKxldLogLinking, kKxldLogErr,
+ "\n\n bad LC_SEGMENT_SPLIT_INFO: 0x%02X %02X %02X %02X %02X %02X %02X %02X at %p (buf %p + %lu) <%s>",
+ *(dataPtr + 0),
+ *(dataPtr + 1),
+ *(dataPtr + 2),
+ *(dataPtr + 3),
+ *(dataPtr + 4),
+ *(dataPtr + 5),
+ *(dataPtr + 6),
+ *(dataPtr + 7),
+ (void *) dataPtr,
+ (void *) buf,
+ *data_offset, __func__);
+ }
#endif
// update the load command header
finish:
return rval;
}
-
projects / apple / xnu.git / blobdiff