From: NeilBrown <neilb@suse.de>
Date: Fri, 30 Jun 2006 08:56:10 +0000 (-0700)
Subject: [PATCH] knfsd: improve the test for cross-device-rename in nfsd
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a56f39375a7bd183149c18286389e4a58ac9bc95;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] knfsd: improve the test for cross-device-rename in nfsd

Just testing the i_sb isn't really enough, at least the vfsmnt must be the
same.  Thanks Al.

Cc: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 245eaa1fb59b..b653ede37e66 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1553,7 +1553,7 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
 	tdir = tdentry->d_inode;
 
 	err = (rqstp->rq_vers == 2) ? nfserr_acces : nfserr_xdev;
-	if (fdir->i_sb != tdir->i_sb)
+	if (ffhp->fh_export != tfhp->fh_export)
 		goto out;
 
 	err = nfserr_perm;