static void read_metadata(input_stream *inp, size_t *count,
grpc_metadata **metadata, call_state *cs) {
*count = next_byte(inp);
*metadata = gpr_malloc(*count * sizeof(**metadata));
memset(*metadata, 0, *count * sizeof(**metadata));
for (size_t i = 0; i < *count; i++) {
(*metadata)[i].key = read_string(inp);
read_buffer(inp, (char **)&(*metadata)[i].value,
&(*metadata)[i].value_length);
(*metadata)[i].flags = read_uint32(inp);
add_to_free(cs, (void *)(*metadata)[i].key);
add_to_free(cs, (void *)(*metadata)[i].value);
}
add_to_free(cs, *metadata);
}
int deleteFile(const char* fileName){
CVFS *vfs=getVFS();
FT *trav = vfs->myft;
FT *prev = NULL;
//traverse till the required file
while(trav!=NULL){
if(strcmp(trav->name,fileName)==0){
BLOCK *del = trav->data,*next;
//add data block of the file to free data blocks
while(del!=NULL){
next = del->next;
add_to_free(del);
del = next;
}
if(prev == NULL)
vfs->myft = trav->next;
else
prev->next = trav->next;
//printf("root %d %d\n",vfs->free->offset,vfs->free->size);
del = vfs->free;
//combine adjacent data blocks in the free to overcome fragmentation of data blocks in free
while(del->next != NULL){
if(del->offset+del->size == del->next->offset){
del->size += del->next->size;
next = del->next;
del->next = del->next->next;
free(next);
}
del = del->next;
if(del==NULL)
break;
}
//free the data entry
free(trav);
return SUCCESS;
}
prev = trav;
trav = trav->next;
}
return NOTFOUND;
}