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-rw-r--r--fs/nfs/nfs4client.c49
-rw-r--r--fs/nfs/nfs4namespace.c43
-rw-r--r--fs/nfs/nfs4proc.c136
-rw-r--r--fs/nfs/nfs4state.c68
-rw-r--r--fs/nfs/nfs4super.c2
-rw-r--r--fs/nfs/nfs4xdr.c39
-rw-r--r--fs/nfs/super.c80
-rw-r--r--fs/nfsd/nfs4xdr.c24
-rw-r--r--include/linux/nfs_xdr.h24
-rw-r--r--include/linux/sunrpc/auth.h9
-rw-r--r--include/linux/sunrpc/gss_api.h30
-rw-r--r--net/sunrpc/Kconfig1
-rw-r--r--net/sunrpc/auth.c75
-rw-r--r--net/sunrpc/auth_gss/auth_gss.c3
-rw-r--r--net/sunrpc/auth_gss/gss_krb5_mech.c6
-rw-r--r--net/sunrpc/auth_gss/gss_mech_switch.c119
-rw-r--r--net/sunrpc/auth_gss/gss_rpc_upcall.c7
-rw-r--r--net/sunrpc/auth_gss/gss_rpc_upcall.h3
-rw-r--r--net/sunrpc/auth_gss/svcauth_gss.c4
-rw-r--r--net/sunrpc/clnt.c11
20 files changed, 456 insertions, 277 deletions
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index f4d4d4ec6bf7..947b0c908aa9 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -201,7 +201,9 @@ struct nfs_client *nfs4_init_client(struct nfs_client *clp,
if (clp->cl_minorversion != 0)
__set_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags);
__set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
- error = nfs_create_rpc_client(clp, timeparms, authflavour);
+ error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_GSS_KRB5I);
+ if (error == -EINVAL)
+ error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_NULL);
if (error < 0)
goto error;
@@ -302,7 +304,7 @@ int nfs40_walk_client_list(struct nfs_client *new,
struct rpc_cred *cred)
{
struct nfs_net *nn = net_generic(new->cl_net, nfs_net_id);
- struct nfs_client *pos, *n, *prev = NULL;
+ struct nfs_client *pos, *prev = NULL;
struct nfs4_setclientid_res clid = {
.clientid = new->cl_clientid,
.confirm = new->cl_confirm,
@@ -310,10 +312,23 @@ int nfs40_walk_client_list(struct nfs_client *new,
int status = -NFS4ERR_STALE_CLIENTID;
spin_lock(&nn->nfs_client_lock);
- list_for_each_entry_safe(pos, n, &nn->nfs_client_list, cl_share_link) {
+ list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) {
/* If "pos" isn't marked ready, we can't trust the
* remaining fields in "pos" */
- if (pos->cl_cons_state < NFS_CS_READY)
+ if (pos->cl_cons_state > NFS_CS_READY) {
+ atomic_inc(&pos->cl_count);
+ spin_unlock(&nn->nfs_client_lock);
+
+ if (prev)
+ nfs_put_client(prev);
+ prev = pos;
+
+ status = nfs_wait_client_init_complete(pos);
+ spin_lock(&nn->nfs_client_lock);
+ if (status < 0)
+ continue;
+ }
+ if (pos->cl_cons_state != NFS_CS_READY)
continue;
if (pos->rpc_ops != new->rpc_ops)
@@ -425,16 +440,16 @@ int nfs41_walk_client_list(struct nfs_client *new,
struct rpc_cred *cred)
{
struct nfs_net *nn = net_generic(new->cl_net, nfs_net_id);
- struct nfs_client *pos, *n, *prev = NULL;
+ struct nfs_client *pos, *prev = NULL;
int status = -NFS4ERR_STALE_CLIENTID;
spin_lock(&nn->nfs_client_lock);
- list_for_each_entry_safe(pos, n, &nn->nfs_client_list, cl_share_link) {
+ list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) {
/* If "pos" isn't marked ready, we can't trust the
* remaining fields in "pos", especially the client
* ID and serverowner fields. Wait for CREATE_SESSION
* to finish. */
- if (pos->cl_cons_state < NFS_CS_READY) {
+ if (pos->cl_cons_state > NFS_CS_READY) {
atomic_inc(&pos->cl_count);
spin_unlock(&nn->nfs_client_lock);
@@ -442,18 +457,17 @@ int nfs41_walk_client_list(struct nfs_client *new,
nfs_put_client(prev);
prev = pos;
- nfs4_schedule_lease_recovery(pos);
status = nfs_wait_client_init_complete(pos);
- if (status < 0) {
- nfs_put_client(pos);
- spin_lock(&nn->nfs_client_lock);
- continue;
+ if (status == 0) {
+ nfs4_schedule_lease_recovery(pos);
+ status = nfs4_wait_clnt_recover(pos);
}
- status = pos->cl_cons_state;
spin_lock(&nn->nfs_client_lock);
if (status < 0)
continue;
}
+ if (pos->cl_cons_state != NFS_CS_READY)
+ continue;
if (pos->rpc_ops != new->rpc_ops)
continue;
@@ -471,17 +485,18 @@ int nfs41_walk_client_list(struct nfs_client *new,
continue;
atomic_inc(&pos->cl_count);
- spin_unlock(&nn->nfs_client_lock);
+ *result = pos;
+ status = 0;
dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
__func__, pos, atomic_read(&pos->cl_count));
-
- *result = pos;
- return 0;
+ break;
}
/* No matching nfs_client found. */
spin_unlock(&nn->nfs_client_lock);
dprintk("NFS: <-- %s status = %d\n", __func__, status);
+ if (prev)
+ nfs_put_client(prev);
return status;
}
#endif /* CONFIG_NFS_V4_1 */
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 0dd766079e1c..cdb0b41a4810 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -134,33 +134,38 @@ static size_t nfs_parse_server_name(char *string, size_t len,
return ret;
}
+/**
+ * nfs_find_best_sec - Find a security mechanism supported locally
+ * @flavors: List of security tuples returned by SECINFO procedure
+ *
+ * Return the pseudoflavor of the first security mechanism in
+ * "flavors" that is locally supported. Return RPC_AUTH_UNIX if
+ * no matching flavor is found in the array. The "flavors" array
+ * is searched in the order returned from the server, per RFC 3530
+ * recommendation.
+ */
rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *flavors)
{
- struct gss_api_mech *mech;
- struct xdr_netobj oid;
- int i;
- rpc_authflavor_t pseudoflavor = RPC_AUTH_UNIX;
+ rpc_authflavor_t pseudoflavor;
+ struct nfs4_secinfo4 *secinfo;
+ unsigned int i;
for (i = 0; i < flavors->num_flavors; i++) {
- struct nfs4_secinfo_flavor *flavor;
- flavor = &flavors->flavors[i];
-
- if (flavor->flavor == RPC_AUTH_NULL || flavor->flavor == RPC_AUTH_UNIX) {
- pseudoflavor = flavor->flavor;
- break;
- } else if (flavor->flavor == RPC_AUTH_GSS) {
- oid.len = flavor->gss.sec_oid4.len;
- oid.data = flavor->gss.sec_oid4.data;
- mech = gss_mech_get_by_OID(&oid);
- if (!mech)
- continue;
- pseudoflavor = gss_svc_to_pseudoflavor(mech, flavor->gss.service);
- gss_mech_put(mech);
+ secinfo = &flavors->flavors[i];
+
+ switch (secinfo->flavor) {
+ case RPC_AUTH_NULL:
+ case RPC_AUTH_UNIX:
+ case RPC_AUTH_GSS:
+ pseudoflavor = rpcauth_get_pseudoflavor(secinfo->flavor,
+ &secinfo->flavor_info);
+ if (pseudoflavor != RPC_AUTH_MAXFLAVOR)
+ return pseudoflavor;
break;
}
}
- return pseudoflavor;
+ return RPC_AUTH_UNIX;
}
static rpc_authflavor_t nfs4_negotiate_security(struct inode *inode, struct qstr *name)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index c13144911d20..9da4bd55eb30 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -769,6 +769,7 @@ struct nfs4_opendata {
struct iattr attrs;
unsigned long timestamp;
unsigned int rpc_done : 1;
+ unsigned int is_recover : 1;
int rpc_status;
int cancelled;
};
@@ -1101,9 +1102,12 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
/* Save the delegation */
nfs4_stateid_copy(&stateid, &delegation->stateid);
rcu_read_unlock();
- ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
- if (ret != 0)
- goto out;
+ nfs_release_seqid(opendata->o_arg.seqid);
+ if (!opendata->is_recover) {
+ ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
+ if (ret != 0)
+ goto out;
+ }
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
@@ -1543,15 +1547,20 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR &&
+ data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH &&
can_open_delegated(delegation, data->o_arg.fmode))
goto unlock_no_action;
rcu_read_unlock();
}
/* Update client id. */
data->o_arg.clientid = clp->cl_clientid;
- if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) {
- task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
+ switch (data->o_arg.claim) {
+ case NFS4_OPEN_CLAIM_PREVIOUS:
+ case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
+ case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
+ case NFS4_OPEN_CLAIM_FH:
+ task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
}
data->timestamp = jiffies;
@@ -1665,8 +1674,11 @@ static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
data->rpc_done = 0;
data->rpc_status = 0;
data->cancelled = 0;
- if (isrecover)
+ data->is_recover = 0;
+ if (isrecover) {
nfs4_set_sequence_privileged(&o_arg->seq_args);
+ data->is_recover = 1;
+ }
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
@@ -2130,20 +2142,25 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
.rpc_cred = cred,
};
unsigned long timestamp = jiffies;
+ fmode_t fmode;
+ bool truncate;
int status;
nfs_fattr_init(fattr);
- if (state != NULL && nfs4_valid_open_stateid(state)) {
+ /* Servers should only apply open mode checks for file size changes */
+ truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false;
+ fmode = truncate ? FMODE_WRITE : FMODE_READ;
+
+ if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) {
+ /* Use that stateid */
+ } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) {
struct nfs_lockowner lockowner = {
.l_owner = current->files,
.l_pid = current->tgid,
};
nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE,
&lockowner);
- } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode,
- FMODE_WRITE)) {
- /* Use that stateid */
} else
nfs4_stateid_copy(&arg.stateid, &zero_stateid);
@@ -2167,6 +2184,13 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
err = _nfs4_do_setattr(inode, cred, fattr, sattr, state);
switch (err) {
case -NFS4ERR_OPENMODE:
+ if (!(sattr->ia_valid & ATTR_SIZE)) {
+ pr_warn_once("NFSv4: server %s is incorrectly "
+ "applying open mode checks to "
+ "a SETATTR that is not "
+ "changing file size.\n",
+ server->nfs_client->cl_hostname);
+ }
if (state && !(state->state & FMODE_WRITE)) {
err = -EBADF;
if (sattr->ia_valid & ATTR_OPEN)
@@ -2536,7 +2560,7 @@ static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandl
auth = rpcauth_create(flavor, server->client);
if (IS_ERR(auth)) {
- ret = -EIO;
+ ret = -EACCES;
goto out;
}
ret = nfs4_lookup_root(server, fhandle, info);
@@ -2544,27 +2568,36 @@ out:
return ret;
}
+/*
+ * Retry pseudoroot lookup with various security flavors. We do this when:
+ *
+ * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
+ * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
+ *
+ * Returns zero on success, or a negative NFS4ERR value, or a
+ * negative errno value.
+ */
static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
- int i, len, status = 0;
- rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS];
-
- len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array));
- if (len < 0)
- return len;
-
- for (i = 0; i < len; i++) {
- /* AUTH_UNIX is the default flavor if none was specified,
- * thus has already been tried. */
- if (flav_array[i] == RPC_AUTH_UNIX)
- continue;
+ /* Per 3530bis 15.33.5 */
+ static const rpc_authflavor_t flav_array[] = {
+ RPC_AUTH_GSS_KRB5P,
+ RPC_AUTH_GSS_KRB5I,
+ RPC_AUTH_GSS_KRB5,
+ RPC_AUTH_UNIX, /* courtesy */
+ RPC_AUTH_NULL,
+ };
+ int status = -EPERM;
+ size_t i;
+ for (i = 0; i < ARRAY_SIZE(flav_array); i++) {
status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
continue;
break;
}
+
/*
* -EACCESS could mean that the user doesn't have correct permissions
* to access the mount. It could also mean that we tried to mount
@@ -2577,24 +2610,36 @@ static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
return status;
}
-/*
- * get the file handle for the "/" directory on the server
+static int nfs4_do_find_root_sec(struct nfs_server *server,
+ struct nfs_fh *fhandle, struct nfs_fsinfo *info)
+{
+ int mv = server->nfs_client->cl_minorversion;
+ return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info);
+}
+
+/**
+ * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
+ * @server: initialized nfs_server handle
+ * @fhandle: we fill in the pseudo-fs root file handle
+ * @info: we fill in an FSINFO struct
+ *
+ * Returns zero on success, or a negative errno.
*/
int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
- int minor_version = server->nfs_client->cl_minorversion;
- int status = nfs4_lookup_root(server, fhandle, info);
- if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR))
- /*
- * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
- * by nfs4_map_errors() as this function exits.
- */
- status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info);
+ int status;
+
+ status = nfs4_lookup_root(server, fhandle, info);
+ if ((status == -NFS4ERR_WRONGSEC) &&
+ !(server->flags & NFS_MOUNT_SECFLAVOUR))
+ status = nfs4_do_find_root_sec(server, fhandle, info);
+
if (status == 0)
status = nfs4_server_capabilities(server, fhandle);
if (status == 0)
status = nfs4_do_fsinfo(server, fhandle, info);
+
return nfs4_map_errors(status);
}
@@ -3473,12 +3518,21 @@ static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
{
struct nfs4_exception exception = { };
+ unsigned long now = jiffies;
int err;
do {
- err = nfs4_handle_exception(server,
- _nfs4_do_fsinfo(server, fhandle, fsinfo),
- &exception);
+ err = _nfs4_do_fsinfo(server, fhandle, fsinfo);
+ if (err == 0) {
+ struct nfs_client *clp = server->nfs_client;
+
+ spin_lock(&clp->cl_lock);
+ clp->cl_lease_time = fsinfo->lease_time * HZ;
+ clp->cl_last_renewal = now;
+ spin_unlock(&clp->cl_lock);
+ break;
+ }
+ err = nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
return err;
}
@@ -4319,27 +4373,17 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
struct nfs4_setclientid_res *arg,
struct rpc_cred *cred)
{
- struct nfs_fsinfo fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
.rpc_argp = arg,
- .rpc_resp = &fsinfo,
.rpc_cred = cred,
};
- unsigned long now;
int status;
dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
clp->cl_rpcclient->cl_auth->au_ops->au_name,
clp->cl_clientid);
- now = jiffies;
status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
- if (status == 0) {
- spin_lock(&clp->cl_lock);
- clp->cl_lease_time = fsinfo.lease_time * HZ;
- clp->cl_last_renewal = now;
- spin_unlock(&clp->cl_lock);
- }
dprintk("NFS reply setclientid_confirm: %d\n", status);
return status;
}
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index b7796950eceb..0b32f9483b7a 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -154,18 +154,6 @@ struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp)
return cred;
}
-static void nfs4_clear_machine_cred(struct nfs_client *clp)
-{
- struct rpc_cred *cred;
-
- spin_lock(&clp->cl_lock);
- cred = clp->cl_machine_cred;
- clp->cl_machine_cred = NULL;
- spin_unlock(&clp->cl_lock);
- if (cred != NULL)
- put_rpccred(cred);
-}
-
static struct rpc_cred *
nfs4_get_renew_cred_server_locked(struct nfs_server *server)
{
@@ -1776,10 +1764,6 @@ static int nfs4_handle_reclaim_lease_error(struct nfs_client *clp, int status)
clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
return -EPERM;
case -EACCES:
- if (clp->cl_machine_cred == NULL)
- return -EACCES;
- /* Handle case where the user hasn't set up machine creds */
- nfs4_clear_machine_cred(clp);
case -NFS4ERR_DELAY:
case -ETIMEDOUT:
case -EAGAIN:
@@ -1874,31 +1858,18 @@ int nfs4_discover_server_trunking(struct nfs_client *clp,
{
const struct nfs4_state_recovery_ops *ops =
clp->cl_mvops->reboot_recovery_ops;
- rpc_authflavor_t *flavors, flav, save;
struct rpc_clnt *clnt;
struct rpc_cred *cred;
- int i, len, status;
+ int i, status;
dprintk("NFS: %s: testing '%s'\n", __func__, clp->cl_hostname);
- len = NFS_MAX_SECFLAVORS;
- flavors = kcalloc(len, sizeof(*flavors), GFP_KERNEL);
- if (flavors == NULL) {
- status = -ENOMEM;
- goto out;
- }
- len = rpcauth_list_flavors(flavors, len);
- if (len < 0) {
- status = len;
- goto out_free;
- }
clnt = clp->cl_rpcclient;
- save = clnt->cl_auth->au_flavor;
i = 0;
mutex_lock(&nfs_clid_init_mutex);
- status = -ENOENT;
again:
+ status = -ENOENT;
cred = ops->get_clid_cred(clp);
if (cred == NULL)
goto out_unlock;
@@ -1908,12 +1879,6 @@ again:
switch (status) {
case 0:
break;
-
- case -EACCES:
- if (clp->cl_machine_cred == NULL)
- break;
- /* Handle case where the user hasn't set up machine creds */
- nfs4_clear_machine_cred(clp);
case -NFS4ERR_DELAY:
case -ETIMEDOUT:
case -EAGAIN:
@@ -1922,22 +1887,23 @@ again:
dprintk("NFS: %s after status %d, retrying\n",
__func__, status);
goto again;
-
+ case -EACCES:
+ if (i++)
+ break;
case -NFS4ERR_CLID_INUSE:
case -NFS4ERR_WRONGSEC:
- status = -EPERM;
- if (i >= len)
- break;
-
- flav = flavors[i++];
- if (flav == save)
- flav = flavors[i++];
- clnt = rpc_clone_client_set_auth(clnt, flav);
+ clnt = rpc_clone_client_set_auth(clnt, RPC_AUTH_UNIX);
if (IS_ERR(clnt)) {
status = PTR_ERR(clnt);
break;
}
- clp->cl_rpcclient = clnt;
+ /* Note: this is safe because we haven't yet marked the
+ * client as ready, so we are the only user of
+ * clp->cl_rpcclient
+ */
+ clnt = xchg(&clp->cl_rpcclient, clnt);
+ rpc_shutdown_client(clnt);
+ clnt = clp->cl_rpcclient;
goto again;
case -NFS4ERR_MINOR_VERS_MISMATCH:
@@ -1948,13 +1914,15 @@ again:
case -NFS4ERR_NOT_SAME: /* FixMe: implement recovery
* in nfs4_exchange_id */
status = -EKEYEXPIRED;
+ break;
+ default:
+ pr_warn("NFS: %s unhandled error %d. Exiting with error EIO\n",
+ __func__, status);
+ status = -EIO;
}
out_unlock:
mutex_unlock(&nfs_clid_init_mutex);
-out_free:
- kfree(flavors);
-out:
dprintk("NFS: %s: status = %d\n", __func__, status);
return status;
}
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index 569b166cc050..a5e1a3026d48 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -252,6 +252,8 @@ struct dentry *nfs4_try_mount(int flags, const char *dev_name,
dfprintk(MOUNT, "--> nfs4_try_mount()\n");
+ if (data->auth_flavors[0] == RPC_AUTH_MAXFLAVOR)
+ data->auth_flavors[0] = RPC_AUTH_UNIX;
export_path = data->nfs_server.export_path;
data->nfs_server.export_path = "/";
root_mnt = nfs_do_root_mount(&nfs4_remote_fs_type, flags, mount_info,
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index c2cbf0d90a31..3c79c5878c6d 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -530,14 +530,10 @@ static int nfs4_stat_to_errno(int);
decode_setclientid_maxsz)
#define NFS4_enc_setclientid_confirm_sz \
(compound_encode_hdr_maxsz + \
- encode_setclientid_confirm_maxsz + \
- encode_putrootfh_maxsz + \
- encode_fsinfo_maxsz)
+ encode_setclientid_confirm_maxsz)
#define NFS4_dec_setclientid_confirm_sz \
(compound_decode_hdr_maxsz + \
- decode_setclientid_confirm_maxsz + \
- decode_putrootfh_maxsz + \
- decode_fsinfo_maxsz)
+ decode_setclientid_confirm_maxsz)
#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
@@ -2601,12 +2597,9 @@ static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
struct compound_hdr hdr = {
.nops = 0,
};
- const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
encode_compound_hdr(xdr, req, &hdr);
encode_setclientid_confirm(xdr, arg, &hdr);
- encode_putrootfh(xdr, &hdr);
- encode_fsinfo(xdr, lease_bitmap, &hdr);
encode_nops(&hdr);
}
@@ -5198,27 +5191,30 @@ static int decode_delegreturn(struct xdr_stream *xdr)
return decode_op_hdr(xdr, OP_DELEGRETURN);
}
-static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
+static int decode_secinfo_gss(struct xdr_stream *xdr,
+ struct nfs4_secinfo4 *flavor)
{
+ u32 oid_len;
__be32 *p;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
- flavor->gss.sec_oid4.len = be32_to_cpup(p);
- if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
+ oid_len = be32_to_cpup(p);
+ if (oid_len > GSS_OID_MAX_LEN)
goto out_err;
- p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
+ p = xdr_inline_decode(xdr, oid_len);
if (unlikely(!p))
goto out_overflow;
- memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
+ memcpy(flavor->flavor_info.oid.data, p, oid_len);
+ flavor->flavor_info.oid.len = oid_len;
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
- flavor->gss.qop4 = be32_to_cpup(p++);
- flavor->gss.service = be32_to_cpup(p);
+ flavor->flavor_info.qop = be32_to_cpup(p++);
+ flavor->flavor_info.service = be32_to_cpup(p);
return 0;
@@ -5231,10 +5227,10 @@ out_err:
static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
{
- struct nfs4_secinfo_flavor *sec_flavor;
+ struct nfs4_secinfo4 *sec_flavor;
+ unsigned int i, num_flavors;
int status;
__be32 *p;
- int i, num_flavors;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
@@ -6637,8 +6633,7 @@ static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
* Decode SETCLIENTID_CONFIRM response
*/
static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
- struct xdr_stream *xdr,
- struct nfs_fsinfo *fsinfo)
+ struct xdr_stream *xdr)
{
struct compound_hdr hdr;
int status;
@@ -6646,10 +6641,6 @@ static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
status = decode_compound_hdr(xdr, &hdr);
if (!status)
status = decode_setclientid_confirm(xdr);
- if (!status)
- status = decode_putrootfh(xdr);
- if (!status)
- status = decode_fsinfo(xdr, fsinfo);
return status;
}
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 2f8a29db0f1b..eb494f6a4c6b 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -920,7 +920,7 @@ static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void)
data->mount_server.port = NFS_UNSPEC_PORT;
data->nfs_server.port = NFS_UNSPEC_PORT;
data->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- data->auth_flavors[0] = RPC_AUTH_UNIX;
+ data->auth_flavors[0] = RPC_AUTH_MAXFLAVOR;
data->auth_flavor_len = 1;
data->minorversion = 0;
data->need_mount = true;
@@ -1608,49 +1608,57 @@ out_security_failure:
}
/*
- * Match the requested auth flavors with the list returned by
- * the server. Returns zero and sets the mount's authentication
- * flavor on success; returns -EACCES if server does not support
- * the requested flavor.
+ * Select a security flavor for this mount. The selected flavor
+ * is planted in args->auth_flavors[0].
*/
-static int nfs_walk_authlist(struct nfs_parsed_mount_data *args,
- struct nfs_mount_request *request)
+static void nfs_select_flavor(struct nfs_parsed_mount_data *args,
+ struct nfs_mount_request *request)
{
- unsigned int i, j, server_authlist_len = *(request->auth_flav_len);
+ unsigned int i, count = *(request->auth_flav_len);
+ rpc_authflavor_t flavor;
+
+ if (args->auth_flavors[0] != RPC_AUTH_MAXFLAVOR)
+ goto out;
+
+ /*
+ * The NFSv2 MNT operation does not return a flavor list.
+ */
+ if (args->mount_server.version != NFS_MNT3_VERSION)
+ goto out_default;
/*
* Certain releases of Linux's mountd return an empty
- * flavor list. To prevent behavioral regression with
- * these servers (ie. rejecting mounts that used to
- * succeed), revert to pre-2.6.32 behavior (no checking)
- * if the returned flavor list is empty.
+ * flavor list in some cases.
*/
- if (server_authlist_len == 0)
- return 0;
+ if (count == 0)
+ goto out_default;
/*
- * We avoid sophisticated negotiating here, as there are
- * plenty of cases where we can get it wrong, providing
- * either too little or too much security.
- *
* RFC 2623, section 2.7 suggests we SHOULD prefer the
* flavor listed first. However, some servers list
- * AUTH_NULL first. Our caller plants AUTH_SYS, the
- * preferred default, in args->auth_flavors[0] if user
- * didn't specify sec= mount option.
+ * AUTH_NULL first. Avoid ever choosing AUTH_NULL.
*/
- for (i = 0; i < args->auth_flavor_len; i++)
- for (j = 0; j < server_authlist_len; j++)
- if (args->auth_flavors[i] == request->auth_flavs[j]) {
- dfprintk(MOUNT, "NFS: using auth flavor %d\n",
- request->auth_flavs[j]);
- args->auth_flavors[0] = request->auth_flavs[j];
- return 0;
- }
+ for (i = 0; i < count; i++) {
+ struct rpcsec_gss_info info;
+
+ flavor = request->auth_flavs[i];
+ switch (flavor) {
+ case RPC_AUTH_UNIX:
+ goto out_set;
+ case RPC_AUTH_NULL:
+ continue;
+ default:
+ if (rpcauth_get_gssinfo(flavor, &info) == 0)
+ goto out_set;
+ }
+ }
- dfprintk(MOUNT, "NFS: server does not support requested auth flavor\n");
- nfs_umount(request);
- return -EACCES;
+out_default:
+ flavor = RPC_AUTH_UNIX;
+out_set:
+ args->auth_flavors[0] = flavor;
+out:
+ dfprintk(MOUNT, "NFS: using auth flavor %d\n", args->auth_flavors[0]);
}
/*
@@ -1713,12 +1721,8 @@ static int nfs_request_mount(struct nfs_parsed_mount_data *args,
return status;
}
- /*
- * MNTv1 (NFSv2) does not support auth flavor negotiation.
- */
- if (args->mount_server.version != NFS_MNT3_VERSION)
- return 0;
- return nfs_walk_authlist(args, &request);
+ nfs_select_flavor(args, &request);
+ return 0;
}
struct dentry *nfs_try_mount(int flags, const char *dev_name,
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 888a600dad8c..78272185a13d 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3083,10 +3083,9 @@ nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
static __be32
nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp,
- __be32 nfserr,struct svc_export *exp)
+ __be32 nfserr, struct svc_export *exp)
{
- int i = 0;
- u32 nflavs;
+ u32 i, nflavs;
struct exp_flavor_info *flavs;
struct exp_flavor_info def_flavs[2];
__be32 *p;
@@ -3117,30 +3116,29 @@ nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp,
WRITE32(nflavs);
ADJUST_ARGS();
for (i = 0; i < nflavs; i++) {
- u32 flav = flavs[i].pseudoflavor;
- struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav);
+ struct rpcsec_gss_info info;
- if (gm) {
+ if (rpcauth_get_gssinfo(flavs[i].pseudoflavor, &info) == 0) {
RESERVE_SPACE(4);
WRITE32(RPC_AUTH_GSS);
ADJUST_ARGS();
- RESERVE_SPACE(4 + gm->gm_oid.len);
- WRITE32(gm->gm_oid.len);
- WRITEMEM(gm->gm_oid.data, gm->gm_oid.len);
+ RESERVE_SPACE(4 + info.oid.len);
+ WRITE32(info.oid.len);
+ WRITEMEM(info.oid.data, info.oid.len);
ADJUST_ARGS();
RESERVE_SPACE(4);
- WRITE32(0); /* qop */
+ WRITE32(info.qop);
ADJUST_ARGS();
RESERVE_SPACE(4);
- WRITE32(gss_pseudoflavor_to_service(gm, flav));
+ WRITE32(info.service);
ADJUST_ARGS();
- gss_mech_put(gm);
} else {
RESERVE_SPACE(4);
- WRITE32(flav);
+ WRITE32(flavs[i].pseudoflavor);
ADJUST_ARGS();
}
}
+
out:
if (exp)
exp_put(exp);
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index bdc100f66dfb..766c5bc9d441 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -14,9 +14,6 @@
#define NFS_DEF_FILE_IO_SIZE (4096U)
#define NFS_MIN_FILE_IO_SIZE (1024U)
-/* Forward declaration for NFS v3 */
-struct nfs4_secinfo_flavors;
-
struct nfs4_string {
unsigned int len;
char *data;
@@ -1053,25 +1050,14 @@ struct nfs4_fs_locations_res {
struct nfs4_fs_locations *fs_locations;
};
-struct nfs4_secinfo_oid {
- unsigned int len;
- char data[GSS_OID_MAX_LEN];
-};
-
-struct nfs4_secinfo_gss {
- struct nfs4_secinfo_oid sec_oid4;
- unsigned int qop4;
- unsigned int service;
-};
-
-struct nfs4_secinfo_flavor {
- unsigned int flavor;
- struct nfs4_secinfo_gss gss;
+struct nfs4_secinfo4 {
+ u32 flavor;
+ struct rpcsec_gss_info flavor_info;
};
struct nfs4_secinfo_flavors {
- unsigned int num_flavors;
- struct nfs4_secinfo_flavor flavors[0];
+ unsigned int num_flavors;
+ struct nfs4_secinfo4 flavors[0];
};
struct nfs4_secinfo_arg {
diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 58fda1c3c783..0dd00f4f6810 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -22,6 +22,8 @@
/* size of the nodename buffer */
#define UNX_MAXNODENAME 32
+struct rpcsec_gss_info;
+
/* Work around the lack of a VFS credential */
struct auth_cred {
kuid_t uid;
@@ -103,6 +105,9 @@ struct rpc_authops {
int (*pipes_create)(struct rpc_auth *);
void (*pipes_destroy)(struct rpc_auth *);
int (*list_pseudoflavors)(rpc_authflavor_t *, int);
+ rpc_authflavor_t (*info2flavor)(struct rpcsec_gss_info *);
+ int (*flavor2info)(rpc_authflavor_t,
+ struct rpcsec_gss_info *);
};
struct rpc_credops {
@@ -137,6 +142,10 @@ int rpcauth_register(const struct rpc_authops *);
int rpcauth_unregister(const struct rpc_authops *);
struct rpc_auth * rpcauth_create(rpc_authflavor_t, struct rpc_clnt *);
void rpcauth_release(struct rpc_auth *);
+rpc_authflavor_t rpcauth_get_pseudoflavor(rpc_authflavor_t,
+ struct rpcsec_gss_info *);
+int rpcauth_get_gssinfo(rpc_authflavor_t,
+ struct rpcsec_gss_info *);
int rpcauth_list_flavors(rpc_authflavor_t *, int);
struct rpc_cred * rpcauth_lookup_credcache(struct rpc_auth *, struct auth_cred *, int);
void rpcauth_init_cred(struct rpc_cred *, const struct auth_cred *, struct rpc_auth *, const struct rpc_credops *);
diff --git a/include/linux/sunrpc/gss_api.h b/include/linux/sunrpc/gss_api.h
index 04d03bb2de5d..161463e59624 100644
--- a/include/linux/sunrpc/gss_api.h
+++ b/include/linux/sunrpc/gss_api.h
@@ -25,10 +25,21 @@ struct gss_ctx {
#define GSS_C_NO_BUFFER ((struct xdr_netobj) 0)
#define GSS_C_NO_CONTEXT ((struct gss_ctx *) 0)
-#define GSS_C_NULL_OID ((struct xdr_netobj) 0)
+#define GSS_C_QOP_DEFAULT (0)
/*XXX arbitrary length - is this set somewhere? */
#define GSS_OID_MAX_LEN 32
+struct rpcsec_gss_oid {
+ unsigned int len;
+ u8 data[GSS_OID_MAX_LEN];
+};
+
+/* From RFC 3530 */
+struct rpcsec_gss_info {
+ struct rpcsec_gss_oid oid;
+ u32 qop;
+ u32 service;
+};
/* gss-api prototypes; note that these are somewhat simplified versions of
* the prototypes specified in RFC 2744. */
@@ -59,12 +70,14 @@ u32 gss_unwrap(
u32 gss_delete_sec_context(
struct gss_ctx **ctx_id);
-u32 gss_svc_to_pseudoflavor(struct gss_api_mech *, u32 service);
+rpc_authflavor_t gss_svc_to_pseudoflavor(struct gss_api_mech *, u32 qop,
+ u32 service);
u32 gss_pseudoflavor_to_service(struct gss_api_mech *, u32 pseudoflavor);
char *gss_service_to_auth_domain_name(struct gss_api_mech *, u32 service);
struct pf_desc {
u32 pseudoflavor;
+ u32 qop;
u32 service;
char *name;
char *auth_domain_name;
@@ -77,7 +90,7 @@ struct pf_desc {
struct gss_api_mech {
struct list_head gm_list;
struct module *gm_owner;
- struct xdr_netobj gm_oid;
+ struct rpcsec_gss_oid gm_oid;
char *gm_name;
const struct gss_api_ops *gm_ops;
/* pseudoflavors supported by this mechanism: */
@@ -121,7 +134,13 @@ void gss_mech_unregister(struct gss_api_mech *);
/* returns a mechanism descriptor given an OID, and increments the mechanism's
* reference count. */
-struct gss_api_mech * gss_mech_get_by_OID(struct xdr_netobj *);
+struct gss_api_mech * gss_mech_get_by_OID(struct rpcsec_gss_oid *);
+
+/* Given a GSS security tuple, look up a pseudoflavor */
+rpc_authflavor_t gss_mech_info2flavor(struct rpcsec_gss_info *);
+
+/* Given a pseudoflavor, look up a GSS security tuple */
+int gss_mech_flavor2info(rpc_authflavor_t, struct rpcsec_gss_info *);
/* Returns a reference to a mechanism, given a name like "krb5" etc. */
struct gss_api_mech *gss_mech_get_by_name(const char *);
@@ -132,9 +151,6 @@ struct gss_api_mech *gss_mech_get_by_pseudoflavor(u32);
/* Fill in an array with a list of supported pseudoflavors */
int gss_mech_list_pseudoflavors(rpc_authflavor_t *, int);
-/* Just increments the mechanism's reference count and returns its input: */
-struct gss_api_mech * gss_mech_get(struct gss_api_mech *);
-
/* For every successful gss_mech_get or gss_mech_get_by_* call there must be a
* corresponding call to gss_mech_put. */
void gss_mech_put(struct gss_api_mech *);
diff --git a/net/sunrpc/Kconfig b/net/sunrpc/Kconfig
index 262caf03bd5f..241b54f30204 100644
--- a/net/sunrpc/Kconfig
+++ b/net/sunrpc/Kconfig
@@ -3,6 +3,7 @@ config SUNRPC
config SUNRPC_GSS
tristate
+ select OID_REGISTRY
config SUNRPC_BACKCHANNEL
bool
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index f5294047df77..ed2fdd210c0b 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -82,7 +82,7 @@ MODULE_PARM_DESC(auth_hashtable_size, "RPC credential cache hashtable size");
static u32
pseudoflavor_to_flavor(u32 flavor) {
- if (flavor >= RPC_AUTH_MAXFLAVOR)
+ if (flavor > RPC_AUTH_MAXFLAVOR)
return RPC_AUTH_GSS;
return flavor;
}
@@ -124,6 +124,79 @@ rpcauth_unregister(const struct rpc_authops *ops)
EXPORT_SYMBOL_GPL(rpcauth_unregister);
/**
+ * rpcauth_get_pseudoflavor - check if security flavor is supported
+ * @flavor: a security flavor
+ * @info: a GSS mech OID, quality of protection, and service value
+ *
+ * Verifies that an appropriate kernel module is available or already loaded.
+ * Returns an equivalent pseudoflavor, or RPC_AUTH_MAXFLAVOR if "flavor" is
+ * not supported locally.
+ */
+rpc_authflavor_t
+rpcauth_get_pseudoflavor(rpc_authflavor_t flavor, struct rpcsec_gss_info *info)
+{
+ const struct rpc_authops *ops;
+ rpc_authflavor_t pseudoflavor;
+
+ ops = auth_flavors[flavor];
+ if (ops == NULL)
+ request_module("rpc-auth-%u", flavor);
+ spin_lock(&rpc_authflavor_lock);
+ ops = auth_flavors[flavor];
+ if (ops == NULL || !try_module_get(ops->owner)) {
+ spin_unlock(&rpc_authflavor_lock);
+ return RPC_AUTH_MAXFLAVOR;
+ }
+ spin_unlock(&rpc_authflavor_lock);
+
+ pseudoflavor = flavor;
+ if (ops->info2flavor != NULL)
+ pseudoflavor = ops->info2flavor(info);
+
+ module_put(ops->owner);
+ return pseudoflavor;
+}
+EXPORT_SYMBOL_GPL(rpcauth_get_pseudoflavor);
+
+/**
+ * rpcauth_get_gssinfo - find GSS tuple matching a GSS pseudoflavor
+ * @pseudoflavor: GSS pseudoflavor to match
+ * @info: rpcsec_gss_info structure to fill in
+ *
+ * Returns zero and fills in "info" if pseudoflavor matches a
+ * supported mechanism.
+ */
+int
+rpcauth_get_gssinfo(rpc_authflavor_t pseudoflavor, struct rpcsec_gss_info *info)
+{
+ rpc_authflavor_t flavor = pseudoflavor_to_flavor(pseudoflavor);
+ const struct rpc_authops *ops;
+ int result;
+
+ if (flavor >= RPC_AUTH_MAXFLAVOR)
+ return -EINVAL;
+
+ ops = auth_flavors[flavor];
+ if (ops == NULL)
+ request_module("rpc-auth-%u", flavor);
+ spin_lock(&rpc_authflavor_lock);
+ ops = auth_flavors[flavor];
+ if (ops == NULL || !try_module_get(ops->owner)) {
+ spin_unlock(&rpc_authflavor_lock);
+ return -ENOENT;
+ }
+ spin_unlock(&rpc_authflavor_lock);
+
+ result = -ENOENT;
+ if (ops->flavor2info != NULL)
+ result = ops->flavor2info(pseudoflavor, info);
+
+ module_put(ops->owner);
+ return result;
+}
+EXPORT_SYMBOL_GPL(rpcauth_get_gssinfo);
+
+/**
* rpcauth_list_flavors - discover registered flavors and pseudoflavors
* @array: array to fill in
* @size: size of "array"
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 23563e783ec2..a764e227fdde 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -1641,6 +1641,8 @@ static const struct rpc_authops authgss_ops = {
.pipes_create = gss_pipes_dentries_create,
.pipes_destroy = gss_pipes_dentries_destroy,
.list_pseudoflavors = gss_mech_list_pseudoflavors,
+ .info2flavor = gss_mech_info2flavor,
+ .flavor2info = gss_mech_flavor2info,
};
static const struct rpc_credops gss_credops = {
@@ -1733,6 +1735,7 @@ static void __exit exit_rpcsec_gss(void)
rcu_barrier(); /* Wait for completion of call_rcu()'s */
}
+MODULE_ALIAS("rpc-auth-6");
MODULE_LICENSE("GPL");
module_param_named(expired_cred_retry_delay,
gss_expired_cred_retry_delay,
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c
index 3bc4a23938ea..0d3c158ef8fa 100644
--- a/net/sunrpc/auth_gss/gss_krb5_mech.c
+++ b/net/sunrpc/auth_gss/gss_krb5_mech.c
@@ -732,16 +732,19 @@ static const struct gss_api_ops gss_kerberos_ops = {
static struct pf_desc gss_kerberos_pfs[] = {
[0] = {
.pseudoflavor = RPC_AUTH_GSS_KRB5,
+ .qop = GSS_C_QOP_DEFAULT,
.service = RPC_GSS_SVC_NONE,
.name = "krb5",
},
[1] = {
.pseudoflavor = RPC_AUTH_GSS_KRB5I,
+ .qop = GSS_C_QOP_DEFAULT,
.service = RPC_GSS_SVC_INTEGRITY,
.name = "krb5i",
},
[2] = {
.pseudoflavor = RPC_AUTH_GSS_KRB5P,
+ .qop = GSS_C_QOP_DEFAULT,
.service = RPC_GSS_SVC_PRIVACY,
.name = "krb5p",
},
@@ -753,11 +756,12 @@ MODULE_ALIAS("rpc-auth-gss-krb5p");
MODULE_ALIAS("rpc-auth-gss-390003");
MODULE_ALIAS("rpc-auth-gss-390004");
MODULE_ALIAS("rpc-auth-gss-390005");
+MODULE_ALIAS("rpc-auth-gss-1.2.840.113554.1.2.2");
static struct gss_api_mech gss_kerberos_mech = {
.gm_name = "krb5",
.gm_owner = THIS_MODULE,
- .gm_oid = {9, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02"},
+ .gm_oid = { 9, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02" },
.gm_ops = &gss_kerberos_ops,
.gm_pf_num = ARRAY_SIZE(gss_kerberos_pfs),
.gm_pfs = gss_kerberos_pfs,
diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c
index 43fd5bbf92c6..defa9d33925c 100644
--- a/net/sunrpc/auth_gss/gss_mech_switch.c
+++ b/net/sunrpc/auth_gss/gss_mech_switch.c
@@ -36,6 +36,7 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/oid_registry.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/gss_asn1.h>
#include <linux/sunrpc/auth_gss.h>
@@ -102,8 +103,13 @@ out:
return status;
}
-int
-gss_mech_register(struct gss_api_mech *gm)
+/**
+ * gss_mech_register - register a GSS mechanism
+ * @gm: GSS mechanism handle
+ *
+ * Returns zero if successful, or a negative errno.
+ */
+int gss_mech_register(struct gss_api_mech *gm)
{
int status;
@@ -116,11 +122,14 @@ gss_mech_register(struct gss_api_mech *gm)
dprintk("RPC: registered gss mechanism %s\n", gm->gm_name);
return 0;
}
-
EXPORT_SYMBOL_GPL(gss_mech_register);
-void
-gss_mech_unregister(struct gss_api_mech *gm)
+/**
+ * gss_mech_unregister - release a GSS mechanism
+ * @gm: GSS mechanism handle
+ *
+ */
+void gss_mech_unregister(struct gss_api_mech *gm)
{
spin_lock(&registered_mechs_lock);
list_del(&gm->gm_list);
@@ -128,18 +137,14 @@ gss_mech_unregister(struct gss_api_mech *gm)
dprintk("RPC: unregistered gss mechanism %s\n", gm->gm_name);
gss_mech_free(gm);
}
-
EXPORT_SYMBOL_GPL(gss_mech_unregister);
-struct gss_api_mech *
-gss_mech_get(struct gss_api_mech *gm)
+static struct gss_api_mech *gss_mech_get(struct gss_api_mech *gm)
{
__module_get(gm->gm_owner);
return gm;
}
-EXPORT_SYMBOL_GPL(gss_mech_get);
-
static struct gss_api_mech *
_gss_mech_get_by_name(const char *name)
{
@@ -169,12 +174,16 @@ struct gss_api_mech * gss_mech_get_by_name(const char *name)
}
return gm;
}
-EXPORT_SYMBOL_GPL(gss_mech_get_by_name);
-struct gss_api_mech *
-gss_mech_get_by_OID(struct xdr_netobj *obj)
+struct gss_api_mech *gss_mech_get_by_OID(struct rpcsec_gss_oid *obj)
{
struct gss_api_mech *pos, *gm = NULL;
+ char buf[32];
+
+ if (sprint_oid(obj->data, obj->len, buf, sizeof(buf)) < 0)
+ return NULL;
+ dprintk("RPC: %s(%s)\n", __func__, buf);
+ request_module("rpc-auth-gss-%s", buf);
spin_lock(&registered_mechs_lock);
list_for_each_entry(pos, &registered_mechs, gm_list) {
@@ -188,11 +197,8 @@ gss_mech_get_by_OID(struct xdr_netobj *obj)
}
spin_unlock(&registered_mechs_lock);
return gm;
-
}
-EXPORT_SYMBOL_GPL(gss_mech_get_by_OID);
-
static inline int
mech_supports_pseudoflavor(struct gss_api_mech *gm, u32 pseudoflavor)
{
@@ -237,8 +243,6 @@ gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
return gm;
}
-EXPORT_SYMBOL_GPL(gss_mech_get_by_pseudoflavor);
-
/**
* gss_mech_list_pseudoflavors - Discover registered GSS pseudoflavors
* @array: array to fill in
@@ -268,19 +272,82 @@ int gss_mech_list_pseudoflavors(rpc_authflavor_t *array_ptr, int size)
return i;
}
-u32
-gss_svc_to_pseudoflavor(struct gss_api_mech *gm, u32 service)
+/**
+ * gss_svc_to_pseudoflavor - map a GSS service number to a pseudoflavor
+ * @gm: GSS mechanism handle
+ * @qop: GSS quality-of-protection value
+ * @service: GSS service value
+ *
+ * Returns a matching security flavor, or RPC_AUTH_MAXFLAVOR if none is found.
+ */
+rpc_authflavor_t gss_svc_to_pseudoflavor(struct gss_api_mech *gm, u32 qop,
+ u32 service)
{
int i;
for (i = 0; i < gm->gm_pf_num; i++) {
- if (gm->gm_pfs[i].service == service) {
+ if (gm->gm_pfs[i].qop == qop &&
+ gm->gm_pfs[i].service == service) {
return gm->gm_pfs[i].pseudoflavor;
}
}
- return RPC_AUTH_MAXFLAVOR; /* illegal value */
+ return RPC_AUTH_MAXFLAVOR;
+}
+
+/**
+ * gss_mech_info2flavor - look up a pseudoflavor given a GSS tuple
+ * @info: a GSS mech OID, quality of protection, and service value
+ *
+ * Returns a matching pseudoflavor, or RPC_AUTH_MAXFLAVOR if the tuple is
+ * not supported.
+ */
+rpc_authflavor_t gss_mech_info2flavor(struct rpcsec_gss_info *info)
+{
+ rpc_authflavor_t pseudoflavor;
+ struct gss_api_mech *gm;
+
+ gm = gss_mech_get_by_OID(&info->oid);
+ if (gm == NULL)
+ return RPC_AUTH_MAXFLAVOR;
+
+ pseudoflavor = gss_svc_to_pseudoflavor(gm, info->qop, info->service);
+
+ gss_mech_put(gm);
+ return pseudoflavor;
+}
+
+/**
+ * gss_mech_flavor2info - look up a GSS tuple for a given pseudoflavor
+ * @pseudoflavor: GSS pseudoflavor to match
+ * @info: rpcsec_gss_info structure to fill in
+ *
+ * Returns zero and fills in "info" if pseudoflavor matches a
+ * supported mechanism. Otherwise a negative errno is returned.
+ */
+int gss_mech_flavor2info(rpc_authflavor_t pseudoflavor,
+ struct rpcsec_gss_info *info)
+{
+ struct gss_api_mech *gm;
+ int i;
+
+ gm = gss_mech_get_by_pseudoflavor(pseudoflavor);
+ if (gm == NULL)
+ return -ENOENT;
+
+ for (i = 0; i < gm->gm_pf_num; i++) {
+ if (gm->gm_pfs[i].pseudoflavor == pseudoflavor) {
+ memcpy(info->oid.data, gm->gm_oid.data, gm->gm_oid.len);
+ info->oid.len = gm->gm_oid.len;
+ info->qop = gm->gm_pfs[i].qop;
+ info->service = gm->gm_pfs[i].service;
+ gss_mech_put(gm);
+ return 0;
+ }
+ }
+
+ gss_mech_put(gm);
+ return -ENOENT;
}
-EXPORT_SYMBOL_GPL(gss_svc_to_pseudoflavor);
u32
gss_pseudoflavor_to_service(struct gss_api_mech *gm, u32 pseudoflavor)
@@ -294,8 +361,6 @@ gss_pseudoflavor_to_service(struct gss_api_mech *gm, u32 pseudoflavor)
return 0;
}
-EXPORT_SYMBOL_GPL(gss_pseudoflavor_to_service);
-
char *
gss_service_to_auth_domain_name(struct gss_api_mech *gm, u32 service)
{
@@ -308,8 +373,6 @@ gss_service_to_auth_domain_name(struct gss_api_mech *gm, u32 service)
return NULL;
}
-EXPORT_SYMBOL_GPL(gss_service_to_auth_domain_name);
-
void
gss_mech_put(struct gss_api_mech * gm)
{
@@ -317,8 +380,6 @@ gss_mech_put(struct gss_api_mech * gm)
module_put(gm->gm_owner);
}
-EXPORT_SYMBOL_GPL(gss_mech_put);
-
/* The mech could probably be determined from the token instead, but it's just
* as easy for now to pass it in. */
int
diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.c b/net/sunrpc/auth_gss/gss_rpc_upcall.c
index 3f874d704859..c63273604ddc 100644
--- a/net/sunrpc/auth_gss/gss_rpc_upcall.c
+++ b/net/sunrpc/auth_gss/gss_rpc_upcall.c
@@ -220,7 +220,6 @@ static int gssp_call(struct net *net, struct rpc_message *msg)
/* numbers somewhat arbitrary but large enough for current needs */
#define GSSX_MAX_OUT_HANDLE 128
-#define GSSX_MAX_MECH_OID 16
#define GSSX_MAX_SRC_PRINC 256
#define GSSX_KMEMBUF (GSSX_max_output_handle_sz + \
GSSX_max_oid_sz + \
@@ -242,7 +241,7 @@ int gssp_accept_sec_context_upcall(struct net *net,
* buffers but let the xdr code kmalloc them:
*/
.exported_context_token.len = GSSX_max_output_handle_sz,
- .mech.len = GSSX_max_oid_sz,
+ .mech.len = GSS_OID_MAX_LEN,
.src_name.display_name.len = GSSX_max_princ_sz
};
struct gssx_res_accept_sec_context res = {
@@ -272,7 +271,9 @@ int gssp_accept_sec_context_upcall(struct net *net,
data->minor_status = res.status.minor_status;
if (res.context_handle) {
data->out_handle = rctxh.exported_context_token;
- data->mech_oid = rctxh.mech;
+ data->mech_oid.len = rctxh.mech.len;
+ memcpy(data->mech_oid.data, rctxh.mech.data,
+ data->mech_oid.len);
client_name = rctxh.src_name.display_name;
}
diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.h b/net/sunrpc/auth_gss/gss_rpc_upcall.h
index 4c2caaa7e84e..1e542aded90a 100644
--- a/net/sunrpc/auth_gss/gss_rpc_upcall.h
+++ b/net/sunrpc/auth_gss/gss_rpc_upcall.h
@@ -21,6 +21,7 @@
#ifndef _GSS_RPC_UPCALL_H
#define _GSS_RPC_UPCALL_H
+#include <linux/sunrpc/gss_api.h>
#include <linux/sunrpc/auth_gss.h>
#include "gss_rpc_xdr.h"
#include "../netns.h"
@@ -30,7 +31,7 @@ struct gssp_upcall_data {
struct gssp_in_token in_token;
struct xdr_netobj out_handle;
struct xdr_netobj out_token;
- struct xdr_netobj mech_oid;
+ struct rpcsec_gss_oid mech_oid;
struct svc_cred creds;
int found_creds;
int major_status;
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index 58f5bc329408..1c66a3b78329 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -1544,7 +1544,9 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
svcdata->rsci = rsci;
cache_get(&rsci->h);
rqstp->rq_cred.cr_flavor = gss_svc_to_pseudoflavor(
- rsci->mechctx->mech_type, gc->gc_svc);
+ rsci->mechctx->mech_type,
+ GSS_C_QOP_DEFAULT,
+ gc->gc_svc);
ret = SVC_OK;
goto out;
}
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index ac74399e8899..3f7930f938cc 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -304,10 +304,8 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
err = rpciod_up();
if (err)
goto out_no_rpciod;
- err = -EINVAL;
- if (!xprt)
- goto out_no_xprt;
+ err = -EINVAL;
if (args->version >= program->nrvers)
goto out_err;
version = program->version[args->version];
@@ -382,10 +380,9 @@ out_no_principal:
out_no_stats:
kfree(clnt);
out_err:
- xprt_put(xprt);
-out_no_xprt:
rpciod_down();
out_no_rpciod:
+ xprt_put(xprt);
return ERR_PTR(err);
}
@@ -516,7 +513,7 @@ static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args,
new = rpc_new_client(args, xprt);
if (IS_ERR(new)) {
err = PTR_ERR(new);
- goto out_put;
+ goto out_err;
}
atomic_inc(&clnt->cl_count);
@@ -529,8 +526,6 @@ static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args,
new->cl_chatty = clnt->cl_chatty;
return new;
-out_put:
- xprt_put(xprt);
out_err:
dprintk("RPC: %s: returned error %d\n", __func__, err);
return ERR_PTR(err);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 22:42:13 +0000