fs/nfs/nfs3client.c

   1 #include <linux/nfs_fs.h>
   2 #include <linux/nfs_mount.h>
   3 #include "internal.h"
   4
   5 #ifdef CONFIG_NFS_V3_ACL
   6 static struct rpc_stat          nfsacl_rpcstat = { &nfsacl_program };
   7 static const struct rpc_version *nfsacl_version[] = {
   8         [3]                     = &nfsacl_version3,
   9 };
  10
  11 const struct rpc_program nfsacl_program = {
  12         .name                   = "nfsacl",
  13         .number                 = NFS_ACL_PROGRAM,
  14         .nrvers                 = ARRAY_SIZE(nfsacl_version),
  15         .version                = nfsacl_version,
  16         .stats                  = &nfsacl_rpcstat,
  17 };
  18
  19 /*
  20  * Initialise an NFSv3 ACL client connection
  21  */
  22 static void nfs_init_server_aclclient(struct nfs_server *server)
  23 {
  24         if (server->flags & NFS_MOUNT_NOACL)
  25                 goto out_noacl;
  26
  27         server->client_acl = rpc_bind_new_program(server->client, &nfsacl_program, 3);
  28         if (IS_ERR(server->client_acl))
  29                 goto out_noacl;
  30
  31         /* No errors! Assume that Sun nfsacls are supported */
  32         server->caps |= NFS_CAP_ACLS;
  33         return;
  34
  35 out_noacl:
  36         server->caps &= ~NFS_CAP_ACLS;
  37 }
  38 #else
  39 static inline void nfs_init_server_aclclient(struct nfs_server *server)
  40 {
  41         server->flags &= ~NFS_MOUNT_NOACL;
  42         server->caps &= ~NFS_CAP_ACLS;
  43 }
  44 #endif
  45
  46 struct nfs_server *nfs3_create_server(struct nfs_mount_info *mount_info,
  47                                       struct nfs_subversion *nfs_mod)
  48 {
  49         struct nfs_server *server = nfs_create_server(mount_info, nfs_mod);
  50         /* Create a client RPC handle for the NFS v3 ACL management interface */
  51         if (!IS_ERR(server))
  52                 nfs_init_server_aclclient(server);
  53         return server;
  54 }
  55
  56 struct nfs_server *nfs3_clone_server(struct nfs_server *source,
  57                                      struct nfs_fh *fh,
  58                                      struct nfs_fattr *fattr,
  59                                      rpc_authflavor_t flavor)
  60 {
  61         struct nfs_server *server = nfs_clone_server(source, fh, fattr, flavor);
  62         if (!IS_ERR(server) && !IS_ERR(source->client_acl))
  63                 nfs_init_server_aclclient(server);
  64         return server;
  65 }