From b732a73bc773789894466b0e5320b2f1fe42c7e9 Mon Sep 17 00:00:00 2001
From: John Denker <jsd@av8n.com>
Date: Fri, 1 Jun 2012 18:58:45 -0700
Subject: original, as downloaded from
 http://www.qmail.org/netqmail-1.06.tar.gz

---
 fd_copy.3 | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 fd_copy.3

(limited to 'fd_copy.3')

diff --git a/fd_copy.3 b/fd_copy.3
new file mode 100644
index 0000000..758a7e7
--- /dev/null
+++ b/fd_copy.3
@@ -0,0 +1,44 @@
+.TH fd_copy 3
+.SH NAME
+fd_copy \- duplicate a descriptor
+.SH SYNTAX
+.B #include <fd.h>
+
+int \fBfd_copy\fP(\fIto\fR,\fIfrom\fR);
+
+int \fIto\fR;
+.br
+int \fIfrom\fR;
+.SH DESCRIPTION
+.B fd_copy
+copies 
+descriptor
+.I from
+to descriptor
+.IR to .
+If
+.I to
+was already open,
+.B fd_copy
+closes it.
+.B fd_copy
+always leaves
+.I from
+intact;
+if
+.I to
+and
+.I from
+are the same number,
+.B fd_copy
+does nothing.
+
+.B fd_copy
+returns 0 on success, -1 on error.
+.B fd_copy
+does not guarantee that
+.I to
+will remain open, if it was open, in case of error.
+.SH "SEE ALSO"
+dup(2),
+fd_move(3)
-- 
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