Module Name: src Committed By: msaitoh Date: Mon Dec 22 03:32:23 UTC 2014
Modified Files: src/sys/ufs/ufs [netbsd-7]: extattr.h Log Message: Pull up following revision(s) (requested by manu in ticket #350): sys/ufs/ufs/extattr.h: revision 1.11 Bump UFS1 extended attribute max name length to 256 For extended attribute name max length, kernel filesystem-independant code use either EXTATTR_MAXNAMELEN (BSD API) or XATTR_NAME_MAX (Linux API), which are both defined as KERNEL_NAME_MAX and fits Linux limit of 255 without training \0. UFS1 code had a lower limit that broke Linux compatibility. We can bump the limit without sacrifying backward compatibility, because: 1) There is no API exposing this limit outside the kernel. Upper kernel layers have a larger limit handle the increase without a hitch 2) Each attribute has its own backing store in the fileystem, the name of the backing store matching the attribute name. A newer kernel can create/read/write backing store for longer attribute names and will have no problem with existing shorter names. To generate a diff of this commit: cvs rdiff -u -r1.10 -r1.10.28.1 src/sys/ufs/ufs/extattr.h Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/ufs/ufs/extattr.h diff -u src/sys/ufs/ufs/extattr.h:1.10 src/sys/ufs/ufs/extattr.h:1.10.28.1 --- src/sys/ufs/ufs/extattr.h:1.10 Sun Oct 9 21:15:34 2011 +++ src/sys/ufs/ufs/extattr.h Mon Dec 22 03:32:23 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: extattr.h,v 1.10 2011/10/09 21:15:34 chs Exp $ */ +/* $NetBSD: extattr.h,v 1.10.28.1 2014/12/22 03:32:23 msaitoh Exp $ */ /*- * Copyright (c) 1999-2001 Robert N. M. Watson @@ -43,7 +43,7 @@ #define UFS_EXTATTR_FSROOTSUBDIR ".attribute" #define UFS_EXTATTR_SUBDIR_SYSTEM "system" #define UFS_EXTATTR_SUBDIR_USER "user" -#define UFS_EXTATTR_MAXEXTATTRNAME 65 /* including null */ +#define UFS_EXTATTR_MAXEXTATTRNAME 256 /* including null */ #define UFS_EXTATTR_ATTR_FLAG_INUSE 0x00000001 /* attr has been set */ #define UFS_EXTATTR_PERM_KERNEL 0x00000000