void fetcher_commit(fetcher_state_t *s, bool commit)
{
fetcher_cam_t *cam;
cam = (fetcher_cam_t *) ker_shm_get( KER_FETCHER_PID, s->map.key);
if( cam == NULL ) return;
if( commit == true ) {
ker_codemem_flush( cam->cm, KER_FETCHER_PID );
} else {
ker_codemem_free( cam->cm );
}
}
static int8_t request_new_module(sos_cam_t key, loader_cam_t *cam, uint8_t size, uint16_t saddr, uint8_t type)
{
cam->code_size = size;
cam->fetcher.fetchtype = type;
cam->fetcher.cm = ker_codemem_alloc(
size * LOADER_SIZE_MULTIPLIER,
CODEMEM_TYPE_EXECUTABLE);
DEBUG_PID( KER_DFT_LOADER_PID, "request new module with size = %d\n",
size * LOADER_SIZE_MULTIPLIER);
if(cam->fetcher.cm == CODEMEM_INVALID) {
return -ENOMEM;
}
if( fetcher_request( KER_DFT_LOADER_PID, key, (uint16_t)size * LOADER_SIZE_MULTIPLIER, saddr )
!= SOS_OK ) {
ker_codemem_free( cam->fetcher.cm );
return -ENOMEM;
}
block_protocol();
return SOS_OK;
}
static void process_version_data( msg_version_data_t *v, uint16_t saddr )
{
uint8_t i;
for( i = 0; i < NUM_LOADER_PARAMS_ENTRIES + NUM_LOADER_MODULE_ENTRIES; i++ ) {
sos_cam_t key = ker_cam_key( KER_DFT_LOADER_PID, i);
loader_cam_t *cam;
uint8_t type;
uint8_t size;
uint8_t ver;
if( i < NUM_LOADER_PARAMS_ENTRIES) {
size = (v->pam_size[i]);
ver = (v->pam_ver[i]);
type = FETCHTYPE_DATA;
} else {
size = (v->mod_size[i - NUM_LOADER_PARAMS_ENTRIES]);
ver = (v->mod_ver[i - NUM_LOADER_PARAMS_ENTRIES]);
type = FETCHTYPE_MODULE;
}
cam = ker_cam_lookup( key );
if( cam == NULL && size == 0 ) {
// We cannot find entry and the size is zero
// skip this slot
continue;
}
if( cam == NULL ) {
// we need to add a new module
cam = (loader_cam_t*) ker_malloc(sizeof(loader_cam_t), KER_DFT_LOADER_PID);
if( cam == NULL) {
return;
}
if( ker_cam_add( key, cam ) != SOS_OK ) {
ker_free( cam );
return;
}
} else {
// we need to replace a module
if( cam->version == ver ) {
continue;
}
//! new version of module found...
if( cam->fetcher.status != FETCHING_DONE ) {
if( cam->fetcher.status == FETCHING_STARTED ) {
st.blocked = 0;
restartInterval( 0 );
}
fetcher_cancel( KER_DFT_LOADER_PID, key );
ker_codemem_free(cam->fetcher.cm);
} else /* if( cam->fetcher.status == FETCHING_DONE ) */ {
ker_codemem_free(cam->fetcher.cm);
}
if( size == 0 ) {
//! an rmmod case
ker_cam_remove( key );
ker_free( cam );
continue;
}
//! an insmod case with cam
}
if( request_new_module( key, cam, size, saddr, type) != SOS_OK ) {
ker_cam_remove( key );
ker_free( cam );
} else {
// another insmod case
cam->version = ver;
// only do one fetching
return;
}
}
}