Module Name: src
Committed By: christos
Date: Sun May 19 16:04:46 UTC 2024
Modified Files:
src/lib/libc/sys: dup.2
Log Message:
Amend for oldfd == newfd returning EINVAL in dup3
To generate a diff of this commit:
cvs rdiff -u -r1.33 -r1.34 src/lib/libc/sys/dup.2
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/lib/libc/sys/dup.2
diff -u src/lib/libc/sys/dup.2:1.33 src/lib/libc/sys/dup.2:1.34
--- src/lib/libc/sys/dup.2:1.33 Mon Jul 3 17:32:50 2017
+++ src/lib/libc/sys/dup.2 Sun May 19 12:04:46 2024
@@ -1,4 +1,4 @@
-.\" $NetBSD: dup.2,v 1.33 2017/07/03 21:32:50 wiz Exp $
+.\" $NetBSD: dup.2,v 1.34 2024/05/19 16:04:46 christos Exp $
.\"
.\" Copyright (c) 1980, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
@@ -29,7 +29,7 @@
.\"
.\" @(#)dup.2 8.1 (Berkeley) 6/4/93
.\"
-.Dd December 24, 2013
+.Dd May 19, 2024
.Dt DUP 2
.Os
.Sh NAME
@@ -117,7 +117,14 @@ and can to some extent be adjusted with
.Pp
The
.Fn dup3
-call includes an additional
+call fails and returns
+.Er EINVAL
+if the numeric value in the
+.Ar oldfd
+argument is equal to the one in the
+.Ar newfd
+argument.
+It also includes an additional
.Fa flags
argument supporting a subset of the
.Xr open 2
@@ -207,11 +214,15 @@ and
.Fa newfd
is not in the range of valid file descriptors.
.It Bq Er EINVAL
-.Fa flags
-contained an invalid value.
-Only
+In the
.Fn dup3
-can generate this error.
+call either the
+.Fa flags
+argument contained an invalid value or the
+.Ar oldfd
+argument is equal to the
+.Ar newfd
+argument.
.It Bq Er EMFILE
Too many descriptors are active.
Only
