iokit/Kernel/IOHibernateIO.cpp

638 	vars->bufferHalf   = 0;
912 	    bcopy(bytes, vars->buffer + vars->bufferHalf + vars->bufferOffset, copy);
916 	    bzero(vars->buffer + vars->bufferHalf + vars->bufferOffset, copy);
946                 aes_encrypt_cbc(vars->buffer + vars->bufferHalf + encryptStart,
949                                 vars->buffer + vars->bufferHalf + encryptStart,
958                 bcopy(vars->buffer + vars->bufferHalf + encryptStart + encryptLen - AES_BLOCK_SIZE,
974 	    err = IOHibernatePollerIO(vars, kIOPolledWrite, vars->bufferHalf, offset, length);
992 	    vars->bufferHalf = vars->bufferHalf ? 0 : vars->bufferSize;
1025 	    bcopy(vars->buffer + vars->bufferHalf + vars->bufferOffset, bytes, copy);
1076 		err = IOHibernatePollerIO(vars, kIOPolledRead, vars->bufferHalf, offset, length);
1082 	    vars->bufferHalf = vars->bufferHalf ? 0 : vars->bufferSize;
1093                 bcopy(vars->buffer + vars->bufferHalf + lastReadLength - AES_BLOCK_SIZE,
1099                 aes_decrypt_cbc(vars->buffer + vars->bufferHalf,
1102                                 vars->buffer + vars->bufferHalf,
2799     vars->fileVars->bufferHalf   = 0;