C System Calls and messages

问题

I am trying to pass a pointer to a system call by passing a message with that call.

The pointer should be to an int[].

However the message definition expects a char pointer to be passed. How can I send an int pointer?

int pidarray[j];
m.m1_p1 = pidarray;

Is it possible to convert the pointer types?

回答1:

Is it possible to convert the pointer types?

Yes this is possible. e.g.:

(char*) intPointer

来源：https://stackoverflow.com/questions/34063927/c-system-calls-and-messages