nfs3client.c

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#include <linux/nfs_fs.h>
#include <linux/nfs_mount.h>
#include "internal.h"

#ifdef CONFIG_NFS_V3_ACL
static struct rpc_stat      nfsacl_rpcstat = { &nfsacl_program };
static const struct rpc_version *nfsacl_version[] = {
    [3]         = &nfsacl_version3,
};

const struct rpc_program nfsacl_program = {
    .name           = "nfsacl",
    .number         = NFS_ACL_PROGRAM,
    .nrvers         = ARRAY_SIZE(nfsacl_version),
    .version        = nfsacl_version,
    .stats          = &nfsacl_rpcstat,
};

/*
 * Initialise an NFSv3 ACL client connection
 */
static void nfs_init_server_aclclient(struct nfs_server *server)
{
    if (server->flags & NFS_MOUNT_NOACL)
        goto out_noacl;

    server->client_acl = rpc_bind_new_program(server->client, &nfsacl_program, 3);
    if (IS_ERR(server->client_acl))
        goto out_noacl;

    /* No errors! Assume that Sun nfsacls are supported */
    server->caps |= NFS_CAP_ACLS;
    return;

out_noacl:
    server->caps &= ~NFS_CAP_ACLS;
}
#else
static inline void nfs_init_server_aclclient(struct nfs_server *server)
{
    server->flags &= ~NFS_MOUNT_NOACL;
    server->caps &= ~NFS_CAP_ACLS;
}
#endif

struct nfs_server *nfs3_create_server(struct nfs_mount_info *mount_info,
                      struct nfs_subversion *nfs_mod)
{
    struct nfs_server *server = nfs_create_server(mount_info, nfs_mod);
    /* Create a client RPC handle for the NFS v3 ACL management interface */
    if (!IS_ERR(server))
        nfs_init_server_aclclient(server);
    return server;
}

struct nfs_server *nfs3_clone_server(struct nfs_server *source,
                     struct nfs_fh *fh,
                     struct nfs_fattr *fattr,
                     rpc_authflavor_t flavor)
{
    struct nfs_server *server = nfs_clone_server(source, fh, fattr, flavor);
    if (!IS_ERR(server) && !IS_ERR(source->client_acl))
        nfs_init_server_aclclient(server);
    return server;
}