shared_memory_server.h [plain text]
#ifndef _SHARED_MEMORY_SERVER_H_
#define _SHARED_MEMORY_SERVER_H_
#define SHARED_LIBRARY_SERVER_SUPPORTED
#define GLOBAL_SHARED_TEXT_SEGMENT 0x70000000
#define GLOBAL_SHARED_DATA_SEGMENT 0x80000000
#define GLOBAL_SHARED_SEGMENT_MASK 0xF0000000
#define SHARED_TEXT_REGION_SIZE 0x10000000
#define SHARED_DATA_REGION_SIZE 0x10000000
#define SHARED_ALTERNATE_LOAD_BASE 0x9000000
#define SHARED_TEXT_REGION_MASK 0xFFFFFFF
#define SHARED_DATA_REGION_MASK 0xFFFFFFF
#include <mach/vm_prot.h>
#ifndef MACH_KERNEL
#include <mach/mach.h>
#else
#include <vm/vm_map.h>
#endif
#ifdef MACH_KERNEL_PRIVATE
#include <kern/queue.h>
#include <vm/vm_object.h>
#include <vm/memory_object.h>
extern ipc_port_t shared_text_region_handle;
extern ipc_port_t shared_data_region_handle;
#else
#ifdef KERNEL_PRIVATE
extern mach_port_t shared_text_region_handle;
extern mach_port_t shared_data_region_handle;
#endif
#endif
#ifdef KERNEL_PRIVATE
extern vm_offset_t shared_file_mapping_array;
struct shared_region_task_mappings {
ipc_port_t text_region;
vm_size_t text_size;
ipc_port_t data_region;
vm_size_t data_size;
vm_offset_t region_mappings;
vm_offset_t client_base;
vm_offset_t alternate_base;
vm_offset_t alternate_next;
int flags;
vm_offset_t self;
};
#define SHARED_REGION_SYSTEM 0x1
#define SHARED_REGION_FULL 0x2
typedef struct shared_region_task_mappings *shared_region_task_mappings_t;
#endif
#define SHARED_LIB_ALIAS 0x10
#define ALTERNATE_LOAD_SITE 0x1
#define NEW_LOCAL_SHARED_REGIONS 0x2
#define SF_PREV_LOADED 0x1
#define load_file_hash(file_object, size) \
((((natural_t)file_object) & 0xffffff) % size)
#define VM_PROT_COW 0x8
#define VM_PROT_ZF 0x10
struct sf_mapping {
vm_offset_t mapping_offset;
vm_size_t size;
vm_offset_t file_offset;
vm_prot_t protection;
vm_offset_t cksum;
};
typedef struct sf_mapping sf_mapping_t;
#ifdef MACH_KERNEL_PRIVATE
struct loaded_mapping {
vm_offset_t mapping_offset;
vm_size_t size;
vm_offset_t file_offset;
vm_prot_t protection;
struct loaded_mapping *next;
};
typedef struct loaded_mapping loaded_mapping_t;
struct load_struct {
queue_chain_t links;
shared_region_mapping_t regions_instance;
int depth;
int file_object;
vm_offset_t base_address;
int mapping_cnt;
loaded_mapping_t *mappings;
};
#endif
typedef struct load_struct load_struct_t;
typedef struct load_struct *load_struct_ptr_t;
#ifdef MACH_KERNEL_PRIVATE
struct load_file_ele {
union {
sf_mapping_t mapping;
load_struct_t element;
} u;
};
struct shared_file_info {
mutex_t lock;
queue_head_t *hash;
int hash_size;
boolean_t hash_init;
};
typedef struct shared_file_info shared_file_info_t;
extern kern_return_t
copyin_shared_file(
vm_offset_t mapped_file,
vm_size_t mapped_file_size,
vm_offset_t *base_address,
int map_cnt,
sf_mapping_t *mappings,
memory_object_control_t file_control,
shared_region_task_mappings_t shared_region,
int *flags);
extern kern_return_t
shared_file_init(
ipc_port_t *shared_text_region_handle,
vm_size_t text_region_size,
ipc_port_t *shared_data_region_handle,
vm_size_t data_region_size,
vm_offset_t *shared_file_mapping_array);
extern load_struct_t *
lsf_hash_lookup(
queue_head_t *hash_table,
void *file_object,
int size,
boolean_t alternate,
shared_region_task_mappings_t sm_info);
extern load_struct_t *
lsf_hash_delete(
void *file_object,
vm_offset_t base_offset,
shared_region_task_mappings_t sm_info);
extern void
lsf_hash_insert(
load_struct_t *entry,
shared_region_task_mappings_t sm_info);
extern kern_return_t
lsf_load(
vm_offset_t mapped_file,
vm_size_t mapped_file_size,
vm_offset_t *base_address,
sf_mapping_t *mappings,
int map_cnt,
void *file_object,
int flags,
shared_region_task_mappings_t sm_info);
extern void
lsf_unload(
void *file_object,
vm_offset_t base_offset,
shared_region_task_mappings_t sm_info);
#endif
#endif