Store the credential of the mount process so that we can determine
information such as the user namespace.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfs/client.c | 8 +++++++-
fs/nfs/internal.h | 1 +
fs/nfs/nfs3client.c | 1 +
fs/nfs/nfs4client.c | 6 ++++++
include/linux/nfs_fs_sb.h | 3 +++
5 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 3ce44d5088a2..d1c003dd7e43 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -500,7 +500,7 @@ int nfs_create_rpc_client(struct nfs_client *clp,
.program = &nfs_program,
.version = clp->rpc_ops->version,
.authflavor = flavor,
- .cred = current_cred(),
+ .cred = cl_init->cred,
};
if (test_bit(NFS_CS_DISCRTRY, &clp->cl_flags))
@@ -653,6 +653,7 @@ static int nfs_init_server(struct nfs_server *server,
.proto = data->nfs_server.protocol,
.net = data->net,
.timeparms = &timeparms,
+ .cred = server->cred,
};
struct nfs_client *clp;
int error;
@@ -921,6 +922,7 @@ void nfs_free_server(struct nfs_server *server)
ida_destroy(&server->lockowner_id);
ida_destroy(&server->openowner_id);
nfs_free_iostats(server->io_stats);
+ put_cred(server->cred);
kfree(server);
nfs_release_automount_timer();
}
@@ -941,6 +943,8 @@ struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info,
if (!server)
return ERR_PTR(-ENOMEM);
+ server->cred = get_cred(current_cred());
+
error = -ENOMEM;
fattr = nfs_alloc_fattr();
if (fattr == NULL)
@@ -1007,6 +1011,8 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
if (!server)
return ERR_PTR(-ENOMEM);
+ server->cred = get_cred(source->cred);
+
error = -ENOMEM;
fattr_fsinfo = nfs_alloc_fattr();
if (fattr_fsinfo == NULL)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index c7cf23ae6597..22af82091421 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -84,6 +84,7 @@ struct nfs_client_initdata {
u32 minorversion;
struct net *net;
const struct rpc_timeout *timeparms;
+ const struct cred *cred;
};
/*
diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c
index 7879f2a0fcfd..1afdb0f7473f 100644
--- a/fs/nfs/nfs3client.c
+++ b/fs/nfs/nfs3client.c
@@ -91,6 +91,7 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
.proto = ds_proto,
.net = mds_clp->cl_net,
.timeparms = &ds_timeout,
+ .cred = mds_srv->cred,
};
struct nfs_client *clp;
char buf[INET6_ADDRSTRLEN + 1];
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 1339ede979af..3ce246346f02 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -870,6 +870,7 @@ static int nfs4_set_client(struct nfs_server *server,
.minorversion = minorversion,
.net = net,
.timeparms = timeparms,
+ .cred = server->cred,
};
struct nfs_client *clp;
@@ -931,6 +932,7 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_server *mds_srv,
.minorversion = minor_version,
.net = mds_clp->cl_net,
.timeparms = &ds_timeout,
+ .cred = mds_srv->cred,
};
char buf[INET6_ADDRSTRLEN + 1];
@@ -1107,6 +1109,8 @@ struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info,
if (!server)
return ERR_PTR(-ENOMEM);
+ server->cred = get_cred(current_cred());
+
auth_probe = mount_info->parsed->auth_info.flavor_len < 1;
/* set up the general RPC client */
@@ -1143,6 +1147,8 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
parent_server = NFS_SB(data->sb);
parent_client = parent_server->nfs_client;
+ server->cred = get_cred(parent_server->cred);
+
/* Initialise the client representation from the parent server */
nfs_server_copy_userdata(server, parent_server);
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index c827d31298cc..add00f12a340 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -231,6 +231,9 @@ struct nfs_server {
/* XDR related information */
unsigned int read_hdrsize;
+
+ /* User namespace info */
+ const struct cred *cred;
};
/* Server capabilities */
--
2.21.0
