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
failure, −1 is returned and errno is set to indicate the error.
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 5.11 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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Copyright (C) 2014 Michael Kerrisk <mtk.manpagesgmail.com> %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END |