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From: Eitan Adler <eadler@FreeBSD.org>
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Subject: svn commit: r234966 - stable/9/lib/libc/sys
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Author: eadler
Date: Thu May  3 16:31:21 2012
New Revision: 234966
URL: http://svn.freebsd.org/changeset/base/234966

Log:
  MFC r234131:
  	Return EBADF instead of EMFILE from dup2 when the second argument is
  	outside the range of valid file descriptors
  
  PR:		kern/164970
  Approved by:	cperciva (implicit)

Modified:
  stable/9/lib/libc/sys/dup.2
  stable/9/lib/libc/sys/fcntl.2
Directory Properties:
  stable/9/lib/libc/   (props changed)
  stable/9/lib/libc/sys/   (props changed)

Modified: stable/9/lib/libc/sys/dup.2
==============================================================================
--- stable/9/lib/libc/sys/dup.2	Thu May  3 16:21:26 2012	(r234965)
+++ stable/9/lib/libc/sys/dup.2	Thu May  3 16:31:21 2012	(r234966)
@@ -128,20 +128,27 @@ indicates the cause of the error.
 .Sh ERRORS
 The
 .Fn dup
-and
-.Fn dup2
-system calls fail if:
+system call fails if:
 .Bl -tag -width Er
 .It Bq Er EBADF
 The
 .Fa oldd
-or
-.Fa newd
 argument
 is not a valid active descriptor
 .It Bq Er EMFILE
 Too many descriptors are active.
 .El
+The
+.Fn dup2
+system call fails if:
+.Bl -tag -width Er
+.It Bq Er EBADF
+The
+.Fa oldd
+argument is not a valid active descriptor or the
+.Fa newd
+argument is negative or exceeds the maximum allowable descriptor number
+.El
 .Sh SEE ALSO
 .Xr accept 2 ,
 .Xr cap_new 2 ,

Modified: stable/9/lib/libc/sys/fcntl.2
==============================================================================
--- stable/9/lib/libc/sys/fcntl.2	Thu May  3 16:21:26 2012	(r234965)
+++ stable/9/lib/libc/sys/fcntl.2	Thu May  3 16:31:21 2012	(r234966)
@@ -539,8 +539,6 @@ The argument
 .Fa cmd
 is
 .Dv F_DUPFD
-or
-.Dv F_DUP2FD
 and the maximum number of file descriptors permitted for the
 process are already in use,
 or no file descriptors greater than or equal to