GROUP_H_SIZE
GROUP_H_SIZE, sizeof(evt), dnode, m->node,
int blks = tsk_blocks(GROUP_H_SIZE + dlen);
msg_set_hdr_sz(hdr, GROUP_H_SIZE);
int blks = tsk_blocks(GROUP_H_SIZE + dlen);
msg_set_hdr_sz(hdr, GROUP_H_SIZE);
int blks = tsk_blocks(GROUP_H_SIZE + dlen);