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-.TH DIRFD 3 2010-09-26 "Linux" "Linux Programmer's Manual"
+.TH DIRFD 3 2013-04-19 "Linux" "Linux Programmer's Manual"
.SH NAME
dirfd \- get directory stream file descriptor
.SH SYNOPSIS
is called.
.SH RETURN VALUE
On success, a nonnegative file descriptor is returned.
-On error, \-1 is returned.
+On error, \-1 is returned, and
+.I errno
+is set to indicate the cause of the error.
.SH ERRORS
POSIX.1-2008 specifies two errors,
neither of which is returned by the current