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Subject[2.6.22.y] {16/17} - nfsv4-MAXNAME-fix.diff - series for stable kernel #2
mainline: a16e92edcd0a2846455a30823e1bac964e743baa


--
Thanks,
Oliver
From: J. Bruce Fields <bfields@citi.umich.edu>
Date: Fri, 28 Sep 2007 16:45:51 -0400
Subject: knfsd: query filesystem for NFSv4 getattr of FATTR4_MAXNAME
References: 271803
Patch-mainline: 2.6.24 (likely)

Without this we always return 2^32-1 as the the maximum namelength.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>

---
fs/nfsd/nfs4xdr.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
--- linux-2.6.22.orig/fs/nfsd/nfs4xdr.c
+++ linux-2.6.22/fs/nfsd/nfs4xdr.c
@@ -1453,7 +1453,8 @@ nfsd4_encode_fattr(struct svc_fh *fhp, s
err = vfs_getattr(exp->ex_mnt, dentry, &stat);
if (err)
goto out_nfserr;
- if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) ||
+ if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
+ FATTR4_WORD0_MAXNAME)) ||
(bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
FATTR4_WORD1_SPACE_TOTAL))) {
err = vfs_statfs(dentry, &statfs);
@@ -1699,7 +1700,7 @@ out_acl:
if (bmval0 & FATTR4_WORD0_MAXNAME) {
if ((buflen -= 4) < 0)
goto out_resource;
- WRITE32(~(u32) 0);
+ WRITE32(statfs.f_namelen);
}
if (bmval0 & FATTR4_WORD0_MAXREAD) {
if ((buflen -= 8) < 0)
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