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Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

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* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: Change initial mount authflavor only when server returns NFS4ERR_WRONGSEC
  NFS: Fix a signed vs. unsigned secinfo bug
  Revert "net/sunrpc: Use static const char arrays"
This commit is contained in:
Linus Torvalds 2011-04-08 11:47:35 -07:00
commit 94c8a984ae
3 changed files with 27 additions and 37 deletions
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58
fs/nfs/namespace.c
View file

@ -148,67 +148,64 @@ static rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *flavors,
return pseudoflavor;
}
static rpc_authflavor_t nfs_negotiate_security(const struct dentry *parent, const struct dentry *dentry)
static int nfs_negotiate_security(const struct dentry *parent,
const struct dentry *dentry,
rpc_authflavor_t *flavor)
{
int status = 0;
struct page *page;
struct nfs4_secinfo_flavors *flavors;
int (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
rpc_authflavor_t flavor = RPC_AUTH_UNIX;
int ret = -EPERM;
secinfo = NFS_PROTO(parent->d_inode)->secinfo;
if (secinfo != NULL) {
page = alloc_page(GFP_KERNEL);
if (!page) {
status = -ENOMEM;
ret = -ENOMEM;
goto out;
}
flavors = page_address(page);
status = secinfo(parent->d_inode, &dentry->d_name, flavors);
flavor = nfs_find_best_sec(flavors, dentry->d_inode);
ret = secinfo(parent->d_inode, &dentry->d_name, flavors);
*flavor = nfs_find_best_sec(flavors, dentry->d_inode);
put_page(page);
}
return flavor;
out:
status = -ENOMEM;
return status;
return ret;
}
static rpc_authflavor_t nfs_lookup_with_sec(struct nfs_server *server, struct dentry *parent,
struct dentry *dentry, struct path *path,
struct nfs_fh *fh, struct nfs_fattr *fattr)
static int nfs_lookup_with_sec(struct nfs_server *server, struct dentry *parent,
struct dentry *dentry, struct path *path,
struct nfs_fh *fh, struct nfs_fattr *fattr,
rpc_authflavor_t *flavor)
{
rpc_authflavor_t flavor;
struct rpc_clnt *clone;
struct rpc_auth *auth;
int err;
flavor = nfs_negotiate_security(parent, path->dentry);
if (flavor < 0)
err = nfs_negotiate_security(parent, path->dentry, flavor);
if (err < 0)
goto out;
clone = rpc_clone_client(server->client);
auth = rpcauth_create(flavor, clone);
auth = rpcauth_create(*flavor, clone);
if (!auth) {
flavor = -EIO;
err = -EIO;
goto out_shutdown;
}
err = server->nfs_client->rpc_ops->lookup(clone, parent->d_inode,
&path->dentry->d_name,
fh, fattr);
if (err < 0)
flavor = err;
out_shutdown:
rpc_shutdown_client(clone);
out:
return flavor;
return err;
}
#else /* CONFIG_NFS_V4 */
static inline rpc_authflavor_t nfs_lookup_with_sec(struct nfs_server *server,
struct dentry *parent, struct dentry *dentry,
struct path *path, struct nfs_fh *fh,
struct nfs_fattr *fattr)
static inline int nfs_lookup_with_sec(struct nfs_server *server,
struct dentry *parent, struct dentry *dentry,
struct path *path, struct nfs_fh *fh,
struct nfs_fattr *fattr,
rpc_authflavor_t *flavor)
{
return -EPERM;
}
@ -234,7 +231,7 @@ struct vfsmount *nfs_d_automount(struct path *path)
struct nfs_fh *fh = NULL;
struct nfs_fattr *fattr = NULL;
int err;
rpc_authflavor_t flavor = 1;
rpc_authflavor_t flavor = RPC_AUTH_UNIX;
dprintk("--> nfs_d_automount()\n");
@ -255,13 +252,8 @@ struct vfsmount *nfs_d_automount(struct path *path)
err = server->nfs_client->rpc_ops->lookup(server->client, parent->d_inode,
&path->dentry->d_name,
fh, fattr);
if (err == -EPERM) {
flavor = nfs_lookup_with_sec(server, parent, path->dentry, path, fh, fattr);
if (flavor < 0)
err = flavor;
else
err = 0;
}
if (err == -EPERM && NFS_PROTO(parent->d_inode)->secinfo != NULL)
err = nfs_lookup_with_sec(server, parent, path->dentry, path, fh, fattr, &flavor);
dput(parent);
if (err != 0) {
mnt = ERR_PTR(err);

4
fs/nfs/nfs4proc.c
View file

@ -2204,8 +2204,6 @@ static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandl
goto out;
}
ret = nfs4_lookup_root(server, fhandle, info);
if (ret < 0)
ret = -EAGAIN;
out:
return ret;
}
@ -2226,7 +2224,7 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
for (i = 0; i < len; i++) {
status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
if (status == 0)
if (status != -EPERM)
break;
}
if (status == 0)

2
net/sunrpc/auth_gss/gss_krb5_mech.c
View file

@ -427,7 +427,7 @@ static int
context_derive_keys_rc4(struct krb5_ctx *ctx)
{
struct crypto_hash *hmac;
static const char sigkeyconstant[] = "signaturekey";
char sigkeyconstant[] = "signaturekey";
int slen = strlen(sigkeyconstant) + 1; /* include null terminator */
struct hash_desc desc;
struct scatterlist sg[1];