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| author | Su Yanjun <suyanjun218@gmail.com> | 2019-12-25 11:37:57 +0800 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2020-01-15 10:54:33 -0500 |
| commit | fe1e8dbec11fcad3ae7a34e95fe483d4a2b018fc (patch) | |
| tree | 97ddfcfee8598ec79a13cf5696a6e140656eb636 /fs/nfs/nfs3proc.c | |
| parent | d826e5b827641ae1bebb33d23a774f4e9bb8e94f (diff) | |
| download | lwn-fe1e8dbec11fcad3ae7a34e95fe483d4a2b018fc.tar.gz lwn-fe1e8dbec11fcad3ae7a34e95fe483d4a2b018fc.zip | |
NFSv3: FIx bug when using chacl and chmod to change acl
We find a bug when running test under nfsv3 as below.
1)
chacl u::r--,g::rwx,o:rw- file1
2)
chmod u+w file1
3)
chacl -l file1
We expect u::rw-, but it shows u::r--, more likely it returns the
cached acl in inode.
We dig the code find that the code path is different.
chacl->..->__nfs3_proc_setacls->nfs_zap_acl_cache
Then nfs_zap_acl_cache clears the NFS_INO_INVALID_ACL in
NFS_I(inode)->cache_validity.
chmod->..->nfs3_proc_setattr
Because NFS_INO_INVALID_ACL has been cleared by chacl path,
nfs_zap_acl_cache wont be called.
nfs_setattr_update_inode will set NFS_INO_INVALID_ACL so let it
before nfs_zap_acl_cache call.
Signed-off-by: Su Yanjun <suyanjun218@gmail.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/nfs3proc.c')
| -rw-r--r-- | fs/nfs/nfs3proc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 19f3d1b2807e..4c93a8bca7dc 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -145,9 +145,9 @@ nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, nfs_fattr_init(fattr); status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); if (status == 0) { + nfs_setattr_update_inode(inode, sattr, fattr); if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) nfs_zap_acl_cache(inode); - nfs_setattr_update_inode(inode, sattr, fattr); } dprintk("NFS reply setattr: %d\n", status); return status; |