diff options
Diffstat (limited to 'fs/nfs_common/nfsacl.c')
| -rw-r--r-- | fs/nfs_common/nfsacl.c | 41 |
1 files changed, 26 insertions, 15 deletions
diff --git a/fs/nfs_common/nfsacl.c b/fs/nfs_common/nfsacl.c index 6940439bd60..ed628f71274 100644 --- a/fs/nfs_common/nfsacl.c +++ b/fs/nfs_common/nfsacl.c @@ -38,8 +38,8 @@ struct nfsacl_encode_desc { unsigned int count; struct posix_acl *acl; int typeflag; - uid_t uid; - gid_t gid; + kuid_t uid; + kgid_t gid; }; struct nfsacl_simple_acl { @@ -60,14 +60,16 @@ xdr_nfsace_encode(struct xdr_array2_desc *desc, void *elem) *p++ = htonl(entry->e_tag | nfsacl_desc->typeflag); switch(entry->e_tag) { case ACL_USER_OBJ: - *p++ = htonl(nfsacl_desc->uid); + *p++ = htonl(from_kuid(&init_user_ns, nfsacl_desc->uid)); break; case ACL_GROUP_OBJ: - *p++ = htonl(nfsacl_desc->gid); + *p++ = htonl(from_kgid(&init_user_ns, nfsacl_desc->gid)); break; case ACL_USER: + *p++ = htonl(from_kuid(&init_user_ns, entry->e_uid)); + break; case ACL_GROUP: - *p++ = htonl(entry->e_id); + *p++ = htonl(from_kgid(&init_user_ns, entry->e_gid)); break; default: /* Solaris depends on that! */ *p++ = 0; @@ -148,6 +150,7 @@ xdr_nfsace_decode(struct xdr_array2_desc *desc, void *elem) (struct nfsacl_decode_desc *) desc; __be32 *p = elem; struct posix_acl_entry *entry; + unsigned int id; if (!nfsacl_desc->acl) { if (desc->array_len > NFS_ACL_MAX_ENTRIES) @@ -160,14 +163,22 @@ xdr_nfsace_decode(struct xdr_array2_desc *desc, void *elem) entry = &nfsacl_desc->acl->a_entries[nfsacl_desc->count++]; entry->e_tag = ntohl(*p++) & ~NFS_ACL_DEFAULT; - entry->e_id = ntohl(*p++); + id = ntohl(*p++); entry->e_perm = ntohl(*p++); switch(entry->e_tag) { - case ACL_USER_OBJ: case ACL_USER: - case ACL_GROUP_OBJ: + entry->e_uid = make_kuid(&init_user_ns, id); + if (!uid_valid(entry->e_uid)) + return -EINVAL; + break; case ACL_GROUP: + entry->e_gid = make_kgid(&init_user_ns, id); + if (!gid_valid(entry->e_gid)) + return -EINVAL; + break; + case ACL_USER_OBJ: + case ACL_GROUP_OBJ: case ACL_OTHER: if (entry->e_perm & ~S_IRWXO) return -EINVAL; @@ -190,9 +201,13 @@ cmp_acl_entry(const void *x, const void *y) if (a->e_tag != b->e_tag) return a->e_tag - b->e_tag; - else if (a->e_id > b->e_id) + else if ((a->e_tag == ACL_USER) && uid_gt(a->e_uid, b->e_uid)) + return 1; + else if ((a->e_tag == ACL_USER) && uid_lt(a->e_uid, b->e_uid)) + return -1; + else if ((a->e_tag == ACL_GROUP) && gid_gt(a->e_gid, b->e_gid)) return 1; - else if (a->e_id < b->e_id) + else if ((a->e_tag == ACL_GROUP) && gid_lt(a->e_gid, b->e_gid)) return -1; else return 0; @@ -213,22 +228,18 @@ posix_acl_from_nfsacl(struct posix_acl *acl) sort(acl->a_entries, acl->a_count, sizeof(struct posix_acl_entry), cmp_acl_entry, NULL); - /* Clear undefined identifier fields and find the ACL_GROUP_OBJ - and ACL_MASK entries. */ + /* Find the ACL_GROUP_OBJ and ACL_MASK entries. */ FOREACH_ACL_ENTRY(pa, acl, pe) { switch(pa->e_tag) { case ACL_USER_OBJ: - pa->e_id = ACL_UNDEFINED_ID; break; case ACL_GROUP_OBJ: - pa->e_id = ACL_UNDEFINED_ID; group_obj = pa; break; case ACL_MASK: mask = pa; /* fall through */ case ACL_OTHER: - pa->e_id = ACL_UNDEFINED_ID; break; } } |