Merge tag 'trace-3.15-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...

[firefly-linux-kernel-4.4.55.git] / fs / nfs / nfs3xdr.c

diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index bffc32406fbf81b764d43a298e12489b5fa37faf..fa6d72131c19e64565df105eeb9ed472bb180bf0 100644 (file)
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -592,13 +592,13 @@ static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
 
        if (attr->ia_valid & ATTR_UID) {
                *p++ = xdr_one;
-               *p++ = cpu_to_be32(attr->ia_uid);
+               *p++ = cpu_to_be32(from_kuid(&init_user_ns, attr->ia_uid));
        } else
                *p++ = xdr_zero;
 
        if (attr->ia_valid & ATTR_GID) {
                *p++ = xdr_one;
-               *p++ = cpu_to_be32(attr->ia_gid);
+               *p++ = cpu_to_be32(from_kgid(&init_user_ns, attr->ia_gid));
        } else
                *p++ = xdr_zero;
 
@@ -657,8 +657,12 @@ static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
 
        fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode;
        fattr->nlink = be32_to_cpup(p++);
-       fattr->uid = be32_to_cpup(p++);
-       fattr->gid = be32_to_cpup(p++);
+       fattr->uid = make_kuid(&init_user_ns, be32_to_cpup(p++));
+       if (!uid_valid(fattr->uid))
+               goto out_uid;
+       fattr->gid = make_kgid(&init_user_ns, be32_to_cpup(p++));
+       if (!gid_valid(fattr->gid))
+               goto out_gid;
 
        p = xdr_decode_size3(p, &fattr->size);
        p = xdr_decode_size3(p, &fattr->du.nfs3.used);
@@ -675,6 +679,12 @@ static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
 
        fattr->valid |= NFS_ATTR_FATTR_V3;
        return 0;
+out_uid:
+       dprintk("NFS: returned invalid uid\n");
+       return -EINVAL;
+out_gid:
+       dprintk("NFS: returned invalid gid\n");
+       return -EINVAL;
 out_overflow:
        print_overflow_msg(__func__, xdr);
        return -EIO;