NAME
isfdtype —
determine whether a file descriptor is
of a specific type
SYNOPSIS
#include
<sys/stat.h>
int
isfdtype(int
fd, int
fdtype);
DESCRIPTION
The
isfdtype()
function checks whether or not the file descriptor fd
is of type fdtype.
A list of possible file types may be found in
stat(2) and
the <sys/stat.h> include
file.
RETURN VALUES
The isfdtype() function returns 1 if
fd is of type fdtype and 0 if it
is not. If isfdtype() fails, a value of -1 is
returned and the global variable errno is set to
indicate the error.
ERRORS
The following error codes may be set in errno:
- [
EBADF] - fd is not a valid open file descriptor.
- [
EIO] - An I/O error occurred while reading from or writing to the file system.
SEE ALSO
HISTORY
The isfdtype() function first appeared in
OpenBSD 3.3.