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isfdtype(3)
NAME
  isfdtype - Test a file descriptor for a specific file type

SYNOPSIS
  #include <sys/stat.h>

  int isfdtype(
	  int filedes,
	  int fd_type );

LIBRARY
  Standard C Library (libc)

STANDARDS
  The isfdtype function supports POSIX.1g Draft 6.6.

  Refer to the standards(5) reference page for more information about
  industry standards and associated tags.

PARAMETERS
  filedes
      Specifies the file descriptor to be tested.

  fd_type
      Specifies the file type to test for. Valid file types are defined in
      the <sys/mode.h> include file.

DESCRIPTION
  The isfdtype() function tests whether a file descriptor has a specific file
  type.

RETURN VALUES
  Upon successful completion, the isfdtype() function returns a 1 if the file
  descriptor has the specific file type or a 0 (zero) if it does not. If the
  isfdtype() function fails, a value of -1 is returned and errno is set to
  indicate the error.

ERRORS
  If the isfdtype() function fails, errno may be set to the following value:

  [EBADF]
      The filedes parameter is not a valid file descriptor.

SEE ALSO
  Functions: socket(2), stat(2), isatty(3).

  Standards: standards(5).

Index for Section 3

Alphabetical listing for I

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