/**
@brief New process send a startup signal
We copy the startup cmdline to the process
*/
static void process_startup(struct sysreq_process_startup * req)
{
xstring __user cmdline = req->cmdline_buffer;
if (req->func == SYSREQ_PROCESS_STARTUP_FUNC_START)
{
/* The user buffer can be written ? */
if (ke_validate_user_buffer(cmdline, SYSREQ_PROCESS_STARTUP_MAX_SIZE, true) == false)
return;
memcpy(cmdline, (void*)(kt_arch_get_sp0(kt_current()) - KT_ARCH_THREAD_CP0_STACK_SIZE),
SYSREQ_PROCESS_STARTUP_MAX_SIZE);
//printk("cmdline is %s.\n", cmdline);
}
else if (req->func == SYSREQ_PROCESS_STARTUP_FUNC_SET_PATH)
{
/* The user buffer can be written ? */
if (ke_validate_user_buffer(cmdline, SYSREQ_PROCESS_STARTUP_MAX_SIZE, false) == false)
return;
//printk("current dir = %s.\n", cmdline);
kt_current()->current_dir = fss_open(NULL, cmdline);
}
else if (req->func == SYSREQ_PROCESS_STARTUP_FUNC_END)
{
/* Killing main thread will trigger the process destroying */
kt_delete_current();
}
}
static struct ko_section *map_file(struct ko_process *to, xstring name, page_prot_t prot, size_t __out *size)
{
void *fp;
size_t map_size;
struct ko_section *map;
//TODO: 此处应该使用to 的原始启动路径来做当前路径
if (NULL == (fp = fss_open(kt_current()->current_dir, name)))
goto err0;
map_size = fss_get_size(fp);
if (NULL == (map = create_file_map(to, fp, map_size, prot)))
goto err1;
if (size)
*size = map_size;
return map;
err1:
fss_close(fp);
err0:
return NULL;
}
static struct ko_section *map_file(struct ko_process *to, xstring name, page_prot_t prot, unsigned long *map_size)
{
struct ko_section *ks_file;
unsigned long size;
void *fp;
fp = fss_open(kt_current()->current_dir, name);
if (!fp) goto end;
*map_size = size = fss_get_size(fp);
ks_file = ks_create(to, KS_TYPE_FILE, NULL, size, prot);
if (!ks_file)
goto err1;
ks_file->priv.file.file = fp;
return ks_file;
err1:
fss_close(fp);
end:
return NULL;
}