aboutsummaryrefslogtreecommitdiffstats
path: root/fs
diff options
context:
space:
mode:
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/inode.c179
1 files changed, 105 insertions, 74 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index ea784969fb85..32ddcf69e9ac 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -366,13 +366,15 @@ nfs_create_client(struct nfs_server *server, const struct nfs_mount_data *data)
xprt = xprt_create_proto(tcp ? IPPROTO_TCP : IPPROTO_UDP,
&server->addr, &timeparms);
if (IS_ERR(xprt)) {
- printk(KERN_WARNING "NFS: cannot create RPC transport.\n");
+ dprintk("%s: cannot create RPC transport. Error = %ld\n",
+ __FUNCTION__, PTR_ERR(xprt));
return (struct rpc_clnt *)xprt;
}
clnt = rpc_create_client(xprt, server->hostname, &nfs_program,
server->rpc_ops->version, data->pseudoflavor);
if (IS_ERR(clnt)) {
- printk(KERN_WARNING "NFS: cannot create RPC client.\n");
+ dprintk("%s: cannot create RPC client. Error = %ld\n",
+ __FUNCTION__, PTR_ERR(xprt));
goto out_fail;
}
@@ -426,21 +428,16 @@ nfs_fill_super(struct super_block *sb, struct nfs_mount_data *data, int silent)
/* Check NFS protocol revision and initialize RPC op vector
* and file handle pool. */
- if (server->flags & NFS_MOUNT_VER3) {
#ifdef CONFIG_NFS_V3
+ if (server->flags & NFS_MOUNT_VER3) {
server->rpc_ops = &nfs_v3_clientops;
server->caps |= NFS_CAP_READDIRPLUS;
- if (data->version < 4) {
- printk(KERN_NOTICE "NFS: NFSv3 not supported by mount program.\n");
- return -EIO;
- }
-#else
- printk(KERN_NOTICE "NFS: NFSv3 not supported.\n");
- return -EIO;
-#endif
} else {
server->rpc_ops = &nfs_v2_clientops;
}
+#else
+ server->rpc_ops = &nfs_v2_clientops;
+#endif
/* Fill in pseudoflavor for mount version < 5 */
if (!(data->flags & NFS_MOUNT_SECFLAVOUR))
@@ -1384,74 +1381,94 @@ static struct super_block *nfs_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data)
{
int error;
- struct nfs_server *server;
+ struct nfs_server *server = NULL;
struct super_block *s;
struct nfs_fh *root;
struct nfs_mount_data *data = raw_data;
- if (!data) {
- printk("nfs_read_super: missing data argument\n");
- return ERR_PTR(-EINVAL);
+ s = ERR_PTR(-EINVAL);
+ if (data == NULL) {
+ dprintk("%s: missing data argument\n", __FUNCTION__);
+ goto out_err;
+ }
+ if (data->version <= 0 || data->version > NFS_MOUNT_VERSION) {
+ dprintk("%s: bad mount version\n", __FUNCTION__);
+ goto out_err;
}
+ switch (data->version) {
+ case 1:
+ data->namlen = 0;
+ case 2:
+ data->bsize = 0;
+ case 3:
+ if (data->flags & NFS_MOUNT_VER3) {
+ dprintk("%s: mount structure version %d does not support NFSv3\n",
+ __FUNCTION__,
+ data->version);
+ goto out_err;
+ }
+ data->root.size = NFS2_FHSIZE;
+ memcpy(data->root.data, data->old_root.data, NFS2_FHSIZE);
+ case 4:
+ if (data->flags & NFS_MOUNT_SECFLAVOUR) {
+ dprintk("%s: mount structure version %d does not support strong security\n",
+ __FUNCTION__,
+ data->version);
+ goto out_err;
+ }
+ case 5:
+ memset(data->context, 0, sizeof(data->context));
+ }
+#ifndef CONFIG_NFS_V3
+ /* If NFSv3 is not compiled in, return -EPROTONOSUPPORT */
+ s = ERR_PTR(-EPROTONOSUPPORT);
+ if (data->flags & NFS_MOUNT_VER3) {
+ dprintk("%s: NFSv3 not compiled into kernel\n", __FUNCTION__);
+ goto out_err;
+ }
+#endif /* CONFIG_NFS_V3 */
+ s = ERR_PTR(-ENOMEM);
server = kmalloc(sizeof(struct nfs_server), GFP_KERNEL);
if (!server)
- return ERR_PTR(-ENOMEM);
+ goto out_err;
memset(server, 0, sizeof(struct nfs_server));
/* Zero out the NFS state stuff */
init_nfsv4_state(server);
- if (data->version != NFS_MOUNT_VERSION) {
- printk("nfs warning: mount version %s than kernel\n",
- data->version < NFS_MOUNT_VERSION ? "older" : "newer");
- if (data->version < 2)
- data->namlen = 0;
- if (data->version < 3)
- data->bsize = 0;
- if (data->version < 4) {
- data->flags &= ~NFS_MOUNT_VER3;
- data->root.size = NFS2_FHSIZE;
- memcpy(data->root.data, data->old_root.data, NFS2_FHSIZE);
- }
- if (data->version < 5)
- data->flags &= ~NFS_MOUNT_SECFLAVOUR;
- }
-
root = &server->fh;
if (data->flags & NFS_MOUNT_VER3)
root->size = data->root.size;
else
root->size = NFS2_FHSIZE;
+ s = ERR_PTR(-EINVAL);
if (root->size > sizeof(root->data)) {
- printk("nfs_get_sb: invalid root filehandle\n");
- kfree(server);
- return ERR_PTR(-EINVAL);
+ dprintk("%s: invalid root filehandle\n", __FUNCTION__);
+ goto out_err;
}
memcpy(root->data, data->root.data, root->size);
/* We now require that the mount process passes the remote address */
memcpy(&server->addr, &data->addr, sizeof(server->addr));
if (server->addr.sin_addr.s_addr == INADDR_ANY) {
- printk("NFS: mount program didn't pass remote address!\n");
- kfree(server);
- return ERR_PTR(-EINVAL);
+ dprintk("%s: mount program didn't pass remote address!\n",
+ __FUNCTION__);
+ goto out_err;
}
- s = sget(fs_type, nfs_compare_super, nfs_set_super, server);
-
- if (IS_ERR(s) || s->s_root) {
- kfree(server);
- return s;
+ /* Fire up rpciod if not yet running */
+ s = ERR_PTR(rpciod_up());
+ if (IS_ERR(s)) {
+ dprintk("%s: couldn't start rpciod! Error = %ld\n",
+ __FUNCTION__, PTR_ERR(s));
+ goto out_err;
}
- s->s_flags = flags;
+ s = sget(fs_type, nfs_compare_super, nfs_set_super, server);
+ if (IS_ERR(s) || s->s_root)
+ goto out_rpciod_down;
- /* Fire up rpciod if not yet running */
- if (rpciod_up() != 0) {
- printk(KERN_WARNING "NFS: couldn't start rpciod!\n");
- kfree(server);
- return ERR_PTR(-EIO);
- }
+ s->s_flags = flags;
error = nfs_fill_super(s, data, flags & MS_VERBOSE ? 1 : 0);
if (error) {
@@ -1461,6 +1478,11 @@ static struct super_block *nfs_get_sb(struct file_system_type *fs_type,
}
s->s_flags |= MS_ACTIVE;
return s;
+out_rpciod_down:
+ rpciod_down();
+out_err:
+ kfree(server);
+ return s;
}
static void nfs_kill_super(struct super_block *s)
@@ -1593,15 +1615,19 @@ static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data,
clp = nfs4_get_client(&server->addr.sin_addr);
if (!clp) {
- printk(KERN_WARNING "NFS: failed to create NFS4 client.\n");
+ dprintk("%s: failed to create NFS4 client.\n", __FUNCTION__);
return -EIO;
}
/* Now create transport and client */
authflavour = RPC_AUTH_UNIX;
if (data->auth_flavourlen != 0) {
- if (data->auth_flavourlen > 1)
- printk(KERN_INFO "NFS: cannot yet deal with multiple auth flavours.\n");
+ if (data->auth_flavourlen != 1) {
+ dprintk("%s: Invalid number of RPC auth flavours %d.\n",
+ __FUNCTION__, data->auth_flavourlen);
+ err = -EINVAL;
+ goto out_fail;
+ }
if (copy_from_user(&authflavour, data->auth_flavours, sizeof(authflavour))) {
err = -EFAULT;
goto out_fail;
@@ -1613,16 +1639,18 @@ static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data,
xprt = xprt_create_proto(proto, &server->addr, &timeparms);
if (IS_ERR(xprt)) {
up_write(&clp->cl_sem);
- printk(KERN_WARNING "NFS: cannot create RPC transport.\n");
err = PTR_ERR(xprt);
+ dprintk("%s: cannot create RPC transport. Error = %d\n",
+ __FUNCTION__, err);
goto out_fail;
}
clnt = rpc_create_client(xprt, server->hostname, &nfs_program,
server->rpc_ops->version, authflavour);
if (IS_ERR(clnt)) {
up_write(&clp->cl_sem);
- printk(KERN_WARNING "NFS: cannot create RPC client.\n");
err = PTR_ERR(clnt);
+ dprintk("%s: cannot create RPC client. Error = %d\n",
+ __FUNCTION__, err);
goto out_fail;
}
clnt->cl_intr = 1;
@@ -1654,20 +1682,22 @@ static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data,
clp = NULL;
if (IS_ERR(clnt)) {
- printk(KERN_WARNING "NFS: cannot create RPC client.\n");
- return PTR_ERR(clnt);
+ err = PTR_ERR(clnt);
+ dprintk("%s: cannot create RPC client. Error = %d\n",
+ __FUNCTION__, err);
+ return err;
}
server->client = clnt;
if (server->nfs4_state->cl_idmap == NULL) {
- printk(KERN_WARNING "NFS: failed to create idmapper.\n");
+ dprintk("%s: failed to create idmapper.\n", __FUNCTION__);
return -ENOMEM;
}
if (clnt->cl_auth->au_flavor != authflavour) {
if (rpcauth_create(authflavour, clnt) == NULL) {
- printk(KERN_WARNING "NFS: couldn't create credcache!\n");
+ dprintk("%s: couldn't create credcache!\n", __FUNCTION__);
return -ENOMEM;
}
}
@@ -1728,8 +1758,12 @@ static struct super_block *nfs4_get_sb(struct file_system_type *fs_type,
struct nfs4_mount_data *data = raw_data;
void *p;
- if (!data) {
- printk("nfs_read_super: missing data argument\n");
+ if (data == NULL) {
+ dprintk("%s: missing data argument\n", __FUNCTION__);
+ return ERR_PTR(-EINVAL);
+ }
+ if (data->version <= 0 || data->version > NFS4_MOUNT_VERSION) {
+ dprintk("%s: bad mount version\n", __FUNCTION__);
return ERR_PTR(-EINVAL);
}
@@ -1740,11 +1774,6 @@ static struct super_block *nfs4_get_sb(struct file_system_type *fs_type,
/* Zero out the NFS state stuff */
init_nfsv4_state(server);
- if (data->version != NFS4_MOUNT_VERSION) {
- printk("nfs warning: mount version %s than kernel\n",
- data->version < NFS4_MOUNT_VERSION ? "older" : "newer");
- }
-
p = nfs_copy_user_string(NULL, &data->hostname, 256);
if (IS_ERR(p))
goto out_err;
@@ -1771,11 +1800,20 @@ static struct super_block *nfs4_get_sb(struct file_system_type *fs_type,
}
if (server->addr.sin_family != AF_INET ||
server->addr.sin_addr.s_addr == INADDR_ANY) {
- printk("NFS: mount program didn't pass remote IP address!\n");
+ dprintk("%s: mount program didn't pass remote IP address!\n",
+ __FUNCTION__);
s = ERR_PTR(-EINVAL);
goto out_free;
}
+ /* Fire up rpciod if not yet running */
+ s = ERR_PTR(rpciod_up());
+ if (IS_ERR(s)) {
+ dprintk("%s: couldn't start rpciod! Error = %ld\n",
+ __FUNCTION__, PTR_ERR(s));
+ goto out_free;
+ }
+
s = sget(fs_type, nfs4_compare_super, nfs_set_super, server);
if (IS_ERR(s) || s->s_root)
@@ -1783,13 +1821,6 @@ static struct super_block *nfs4_get_sb(struct file_system_type *fs_type,
s->s_flags = flags;
- /* Fire up rpciod if not yet running */
- if (rpciod_up() != 0) {
- printk(KERN_WARNING "NFS: couldn't start rpciod!\n");
- s = ERR_PTR(-EIO);
- goto out_free;
- }
-
error = nfs4_fill_super(s, data, flags & MS_VERBOSE ? 1 : 0);
if (error) {
up_write(&s->s_umount);