ITEM: K1281L

strconf and ioctl problems.

Question:

When you use the ioctl command in a 'C' program it gives you a
return value of 1 and dbx reveals it is error 22 as an invalid
argument.

The testcase follows:
.................................................................
 \#include \ 
 \#include \ 
 \#include \ 
 \#include \ 
 \#include \ 
 \#include \ 
 \#include \ 
 \#include \

main(int argc,char *argv[], char *envp[]) {
        int fd,ret;
        char *t;
        t = ttyname(0);
        printf("device name: %s0,t);
        if ((fd = open(t,O_RDWR)) \< 0)
                exit(-1);
        ret = ioctl(fd, I_LIST, 0);
        printf("return code from ioctl = %d, errno = %d0, ret, errno);
        close(fd); }
......................................................................
Answer:
  The problem is being caused by the ioctl you are trying to perform. 
 It is an ioctl for a streams based i/o stream, which the tty subsystem 
 in AIX 3.2.x is not. Given that, it is perfectly appropriate for 
 EINVAL to be returned.  

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