f6dc6f6875
If it understands TIOCGETD, then it is a tty, else it isn't one. This seems to help Basic's input statement so I can see the prompt before I enter my input.
12 lines
277 B
C
12 lines
277 B
C
/*
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* XXX - can't #include <sys/ioctl.h> because libcc.ansi and libsys
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* both provide it, and we might find the wrong one.
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*/
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#define TIOCGETD 0x5424
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int ioctl(int fd, unsigned long, ...);
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int isatty(int fd)
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{
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int line_disc;
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return 0 <= ioctl(fd, TIOCGETD, &line_disc);
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}
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