diff options
Diffstat (limited to 'fs/nfs/nfs3xdr.c')
| -rw-r--r-- | fs/nfs/nfs3xdr.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index bffc32406fbf..fa6d72131c19 100644 --- 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; |