Name
isfdtype — test file type of a file descriptor
Synopsis
#include <sys/stat.h> #include <sys/socket.h>
int
isfdtype( |
int fd, |
int fdtype); |
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Note | |||||
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DESCRIPTION
The isfdtype() function
tests whether the file descriptor fd refers to a file of type
fdtype. The
fdtype argument
specifies one of the S_IF*
constants defined in <sys/stat.h>
and documented in stat(2) (e.g., S_IFREG).
RETURN VALUE
The isfdtype() function
returns 1 if the file descriptor fd is of type fdtype and 0 if it is not. On
error, -1 is returned and errno
is set to indicate the cause.
CONFORMING TO
The isfdtype() function is
not specified in any standard, but did appear in the draft
POSIX.1g standard. It is present on OpenBSD and Tru64 UNIX
(where the required header file in both cases is just
<sys/stat.h>
as shown in the POSIX.1g draft), and possibly other
systems.
COLOPHON
This page is part of release 4.07 of the Linux man-pages project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man−pages/.
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