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#include "arch/x86_64/hal/obj.h"
#include "hal/memory.h"
#include "jove.h"
#include "lib/printf.h"
#include "syscall.h"
static int
s_syscall_untyped_split(
jove_owned_obj_t *objdir,
jove_owned_obj_t *target_obj,
size_t payload_bytes,
void *payload_data)
{
int bytes_needed = sizeof(struct syscall_untyped_split);
CHECK_TOOSMALL(bytes_needed, payload_bytes, "Message is too small for payload!");
struct syscall_untyped_split *payload = payload_data;
bytes_needed += payload->dest_pathlen * 2;
CHECK_TOOSMALL(bytes_needed, payload_bytes, "Message is too small for destination path!");
jove_owned_obj_t *dst_obj = objdir_getobj(objdir, payload->dest_path, payload->dest_pathlen);
CHECK_OBJTYPE(dst_obj, JOVE_OBJ_NONE, "Destination path is occupied!");
return untyped_split(target_obj, dst_obj, payload->bytes);
}
static int
s_syscall_untyped_merge(
jove_owned_obj_t *objdir,
jove_owned_obj_t *target_obj,
size_t payload_bytes,
void *payload_data)
{
int bytes_needed = sizeof(struct syscall_generic_objpath);
CHECK_TOOSMALL(bytes_needed, payload_bytes, "Message is too small for payload!");
struct syscall_generic_objpath *payload = payload_data;
bytes_needed += payload->pathlen * 2;
CHECK_TOOSMALL(bytes_needed, payload_bytes, "Message is too small for second path!");
jove_owned_obj_t *snd_obj = objdir_getobj(objdir, payload->path, payload->pathlen);
CHECK_OBJTYPE(snd_obj, JOVE_OBJ_UNTYPED, "Second object is not an untyped!");
return untyped_merge(target_obj, snd_obj);
}
int _syscall_handle_untyped(
jove_owned_obj_t* pcb_obj,
jove_owned_obj_t* objdir,
jove_owned_obj_t* message_obj,
jove_owned_obj_t* target_obj,
struct syscall_header* header,
size_t payload_bytes,
void* payload)
{
switch(header->callid) {
case SYSCALL_UNTYPED_SIZE:
return untyped_size(target_obj);
case SYSCALL_UNTYPED_ALIGN:
return untyped_align(target_obj);
case SYSCALL_UNTYPED_SPLIT:
return s_syscall_untyped_split(objdir, target_obj, payload_bytes, payload);
default:
kprintf("syscall_untyped: Untyped object does not support syscall %i\n", header->callid);
return EBADARG;
}
return 0;
}
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