Manual page for isastream(3C)
isastream - test a file descriptor
SYNOPSIS
#include <stropts.h>
int isastream(int fildes);
MT-LEVEL
MT-Safe
DESCRIPTION
The function
isastream()
determines if a file descriptor represents
a STREAMS file.
fildes refers to an open file descriptor.
RETURN VALUES
If successful,
isastream()
returns
1
if fildes represents a STREAMS file, and
0
if not. On failure,
isastream()
returns
-1
with errno set to
indicate an error.
ERRORS
Under the following conditions,
isastream()
fails and sets errno to:
- EBADF
-
fildes is not a valid file descriptor.
SEE ALSO
streamio.7i
Created by unroff & hp-tools.
© by Hans-Peter Bischof. All Rights Reserved (1997).
Last modified 21/April/97
