NAME    [Toc]    [Back]

     isfdtype - determine whether a file descriptor is of a  specific type

SYNOPSIS    [Toc]    [Back]

     #include <sys/stat.h>

     int
     isfdtype(int fd, int fdtype);

DESCRIPTION    [Toc]    [Back]

     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    [Toc]    [Back]

     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    [Toc]    [Back]

     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    [Toc]    [Back]

     stat(2)

STANDARDS    [Toc]    [Back]

     The isfdtype() function is  expected  to  conform  to  POSIX
1003.1g.

HISTORY    [Toc]    [Back]

     The isfdtype() function first appeared in OpenBSD 3.3.

OpenBSD      3.6                         October     15,     2002