* Copyright 2023, Haiku Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#include <OS.h>
#include <vm_defs.h>
#include "strace.h"
#include "Syscall.h"
#include "TypeHandler.h"
#define FLAG_INFO_ENTRY(name) \
{ name, #name }
static const FlagsTypeHandler::FlagInfo kAreaProtectionFlagInfos[] = {
FLAG_INFO_ENTRY(B_READ_AREA),
FLAG_INFO_ENTRY(B_WRITE_AREA),
FLAG_INFO_ENTRY(B_EXECUTE_AREA),
FLAG_INFO_ENTRY(B_STACK_AREA),
FLAG_INFO_ENTRY(B_CLONEABLE_AREA),
FLAG_INFO_ENTRY(B_OVERCOMMITTING_AREA),
{ 0, NULL }
};
struct enum_info {
unsigned int index;
const char *name;
};
#define ENUM_INFO_ENTRY(name) \
{ name, #name }
static const enum_info kAddressSpecs[] = {
ENUM_INFO_ENTRY(B_ANY_ADDRESS),
ENUM_INFO_ENTRY(B_EXACT_ADDRESS),
ENUM_INFO_ENTRY(B_BASE_ADDRESS),
ENUM_INFO_ENTRY(B_CLONE_ADDRESS),
ENUM_INFO_ENTRY(B_ANY_KERNEL_ADDRESS),
ENUM_INFO_ENTRY(B_RANDOMIZED_ANY_ADDRESS),
ENUM_INFO_ENTRY(B_RANDOMIZED_BASE_ADDRESS),
{ 0, NULL }
};
static const enum_info kAreaMappings[] = {
ENUM_INFO_ENTRY(REGION_NO_PRIVATE_MAP),
ENUM_INFO_ENTRY(REGION_PRIVATE_MAP),
{ 0, NULL }
};
static FlagsTypeHandler::FlagsList kAreaProtectionFlags;
static EnumTypeHandler::EnumMap kAddressSpecsMap;
static EnumTypeHandler::EnumMap kAreaMappingMap;
void
patch_area()
{
for (int i = 0; kAreaProtectionFlagInfos[i].name != NULL; i++) {
kAreaProtectionFlags.push_back(kAreaProtectionFlagInfos[i]);
}
for (int i = 0; kAddressSpecs[i].name != NULL; i++) {
kAddressSpecsMap[kAddressSpecs[i].index] = kAddressSpecs[i].name;
}
for (int i = 0; kAreaMappings[i].name != NULL; i++) {
kAreaMappingMap[kAreaMappings[i].index] = kAreaMappings[i].name;
}
Syscall *create = get_syscall("_kern_create_area");
create->GetParameter("address")->SetInOut(true);
create->GetParameter("addressSpec")->SetHandler(
new EnumTypeHandler(kAddressSpecsMap));
create->GetParameter("protection")->SetHandler(
new FlagsTypeHandler(kAreaProtectionFlags));
Syscall *transfer = get_syscall("_kern_transfer_area");
transfer->GetParameter("_address")->SetInOut(true);
transfer->GetParameter("addressSpec")->SetHandler(
new EnumTypeHandler(kAddressSpecsMap));
Syscall *clone = get_syscall("_kern_clone_area");
clone->GetParameter("_address")->SetInOut(true);
clone->GetParameter("addressSpec")->SetHandler(
new EnumTypeHandler(kAddressSpecsMap));
clone->GetParameter("protection")->SetHandler(
new FlagsTypeHandler(kAreaProtectionFlags));
Syscall *reserve_address_range = get_syscall("_kern_reserve_address_range");
reserve_address_range->GetParameter("_address")->SetInOut(true);
reserve_address_range->GetParameter("addressSpec")->SetHandler(
new EnumTypeHandler(kAddressSpecsMap));
Syscall *set_area_protection = get_syscall("_kern_set_area_protection");
set_area_protection->GetParameter("newProtection")->SetHandler(
new FlagsTypeHandler(kAreaProtectionFlags));
Syscall *map_file = get_syscall("_kern_map_file");
map_file->GetParameter("address")->SetInOut(true);
map_file->GetParameter("addressSpec")->SetHandler(
new EnumTypeHandler(kAddressSpecsMap));
map_file->GetParameter("protection")->SetHandler(
new FlagsTypeHandler(kAreaProtectionFlags));
map_file->GetParameter("mapping")->SetHandler(
new EnumTypeHandler(kAreaMappingMap));
Syscall *set_memory_protection = get_syscall("_kern_set_memory_protection");
set_memory_protection->GetParameter("protection")->SetHandler(
new FlagsTypeHandler(kAreaProtectionFlags));
}
