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-rw-r--r--fs/nfs/Kconfig2
-rw-r--r--fs/nfs/client.c1
-rw-r--r--fs/nfs/dir.c2
-rw-r--r--fs/nfs/dns_resolve.c11
-rw-r--r--fs/nfs/fs_context.c9
-rw-r--r--fs/nfs/fscache.c2
-rw-r--r--fs/nfs/getroot.c39
-rw-r--r--fs/nfs/namespace.c2
-rw-r--r--fs/nfs/nfs4client.c1
-rw-r--r--fs/nfs/nfs4proc.c12
-rw-r--r--fs/nfs/super.c25
11 files changed, 59 insertions, 47 deletions
diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
index 40b6c5ac46c0..88e1763e02f3 100644
--- a/fs/nfs/Kconfig
+++ b/fs/nfs/Kconfig
@@ -164,7 +164,7 @@ config ROOT_NFS
If you want your system to mount its root file system via NFS,
choose Y here. This is common practice for managing systems
without local permanent storage. For details, read
- <file:Documentation/filesystems/nfs/nfsroot.txt>.
+ <file:Documentation/admin-guide/nfs/nfsroot.rst>.
Most people say N here.
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 989c30c98511..f1ff3076e4a4 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -153,6 +153,7 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL)
goto error_0;
+ clp->cl_minorversion = cl_init->minorversion;
clp->cl_nfs_mod = cl_init->nfs_mod;
if (!try_module_get(clp->cl_nfs_mod->owner))
goto error_dealloc;
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 193d6fb363b7..d4b839b6cf89 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2489,7 +2489,7 @@ static int nfs_access_get_cached_rcu(struct inode *inode, const struct cred *cre
rcu_read_lock();
if (nfsi->cache_validity & NFS_INO_INVALID_ACCESS)
goto out;
- lh = rcu_dereference(nfsi->access_cache_entry_lru.prev);
+ lh = rcu_dereference(list_tail_rcu(&nfsi->access_cache_entry_lru));
cache = list_entry(lh, struct nfs_access_entry, lru);
if (lh == &nfsi->access_cache_entry_lru ||
cred_fscmp(cred, cache->cred) != 0)
diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c
index 89bd5581f317..963800037609 100644
--- a/fs/nfs/dns_resolve.c
+++ b/fs/nfs/dns_resolve.c
@@ -152,12 +152,13 @@ static int nfs_dns_upcall(struct cache_detail *cd,
struct cache_head *ch)
{
struct nfs_dns_ent *key = container_of(ch, struct nfs_dns_ent, h);
- int ret;
- ret = nfs_cache_upcall(cd, key->hostname);
- if (ret)
- ret = sunrpc_cache_pipe_upcall(cd, ch);
- return ret;
+ if (test_and_set_bit(CACHE_PENDING, &ch->flags))
+ return 0;
+ if (!nfs_cache_upcall(cd, key->hostname))
+ return 0;
+ clear_bit(CACHE_PENDING, &ch->flags);
+ return sunrpc_cache_pipe_upcall_timeout(cd, ch);
}
static int nfs_dns_match(struct cache_head *ca,
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index e1b938457ab9..e113fcb4bb4c 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -832,6 +832,8 @@ static int nfs_parse_source(struct fs_context *fc,
if (len > maxnamlen)
goto out_hostname;
+ kfree(ctx->nfs_server.hostname);
+
/* N.B. caller will free nfs_server.hostname in all cases */
ctx->nfs_server.hostname = kmemdup_nul(dev_name, len, GFP_KERNEL);
if (!ctx->nfs_server.hostname)
@@ -1240,6 +1242,13 @@ static int nfs_fs_context_validate(struct fs_context *fc)
}
ctx->nfs_mod = nfs_mod;
}
+
+ /* Ensure the filesystem context has the correct fs_type */
+ if (fc->fs_type != ctx->nfs_mod->nfs_fs) {
+ module_put(fc->fs_type->owner);
+ __module_get(ctx->nfs_mod->nfs_fs->owner);
+ fc->fs_type = ctx->nfs_mod->nfs_fs;
+ }
return 0;
out_no_device_name:
diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index 52270bfac120..1abf126c2df4 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -31,6 +31,7 @@ static DEFINE_SPINLOCK(nfs_fscache_keys_lock);
struct nfs_server_key {
struct {
uint16_t nfsversion; /* NFS protocol version */
+ uint32_t minorversion; /* NFSv4 minor version */
uint16_t family; /* address family */
__be16 port; /* IP port */
} hdr;
@@ -55,6 +56,7 @@ void nfs_fscache_get_client_cookie(struct nfs_client *clp)
memset(&key, 0, sizeof(key));
key.hdr.nfsversion = clp->rpc_ops->version;
+ key.hdr.minorversion = clp->cl_minorversion;
key.hdr.family = clp->cl_addr.ss_family;
switch (clp->cl_addr.ss_family) {
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index b012c2668a1f..aaeeb4659bff 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -73,6 +73,7 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
struct inode *inode;
char *name;
int error = -ENOMEM;
+ unsigned long kflags = 0, kflags_out = 0;
name = kstrdup(fc->source, GFP_KERNEL);
if (!name)
@@ -83,11 +84,14 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
if (fsinfo.fattr == NULL)
goto out_name;
+ fsinfo.fattr->label = nfs4_label_alloc(server, GFP_KERNEL);
+ if (IS_ERR(fsinfo.fattr->label))
+ goto out_fattr;
error = server->nfs_client->rpc_ops->getroot(server, ctx->mntfh, &fsinfo);
if (error < 0) {
dprintk("nfs_get_root: getattr error = %d\n", -error);
nfs_errorf(fc, "NFS: Couldn't getattr on root");
- goto out_fattr;
+ goto out_label;
}
inode = nfs_fhget(s, ctx->mntfh, fsinfo.fattr, NULL);
@@ -95,12 +99,12 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
dprintk("nfs_get_root: get root inode failed\n");
error = PTR_ERR(inode);
nfs_errorf(fc, "NFS: Couldn't get root inode");
- goto out_fattr;
+ goto out_label;
}
error = nfs_superblock_set_dummy_root(s, inode);
if (error != 0)
- goto out_fattr;
+ goto out_label;
/* root dentries normally start off anonymous and get spliced in later
* if the dentry tree reaches them; however if the dentry already
@@ -111,7 +115,7 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
dprintk("nfs_get_root: get root dentry failed\n");
error = PTR_ERR(root);
nfs_errorf(fc, "NFS: Couldn't get root dentry");
- goto out_fattr;
+ goto out_label;
}
security_d_instantiate(root, inode);
@@ -123,12 +127,39 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
}
spin_unlock(&root->d_lock);
fc->root = root;
+ if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
+ kflags |= SECURITY_LSM_NATIVE_LABELS;
+ if (ctx->clone_data.sb) {
+ if (d_inode(fc->root)->i_fop != &nfs_dir_operations) {
+ error = -ESTALE;
+ goto error_splat_root;
+ }
+ /* clone lsm security options from the parent to the new sb */
+ error = security_sb_clone_mnt_opts(ctx->clone_data.sb,
+ s, kflags, &kflags_out);
+ } else {
+ error = security_sb_set_mnt_opts(s, fc->security,
+ kflags, &kflags_out);
+ }
+ if (error)
+ goto error_splat_root;
+ if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
+ !(kflags_out & SECURITY_LSM_NATIVE_LABELS))
+ NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
+
+ nfs_setsecurity(inode, fsinfo.fattr, fsinfo.fattr->label);
error = 0;
+out_label:
+ nfs4_label_free(fsinfo.fattr->label);
out_fattr:
nfs_free_fattr(fsinfo.fattr);
out_name:
kfree(name);
out:
return error;
+error_splat_root:
+ dput(fc->root);
+ fc->root = NULL;
+ goto out_label;
}
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index ad6077404947..f3ece8ed3203 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -153,7 +153,7 @@ struct vfsmount *nfs_d_automount(struct path *path)
/* Open a new filesystem context, transferring parameters from the
* parent superblock, including the network namespace.
*/
- fc = fs_context_for_submount(&nfs_fs_type, path->dentry);
+ fc = fs_context_for_submount(path->mnt->mnt_sb->s_type, path->dentry);
if (IS_ERR(fc))
return ERR_CAST(fc);
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 0cd767e5c977..0bd77cc1f639 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -216,7 +216,6 @@ struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init)
INIT_LIST_HEAD(&clp->cl_ds_clients);
rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client");
clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED;
- clp->cl_minorversion = cl_init->minorversion;
clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion];
clp->cl_mig_gen = 1;
#if IS_ENABLED(CONFIG_NFS_V4_1)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 69b7ab7a5815..cb34e840e4fb 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4002,7 +4002,7 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh,
{
int error;
struct nfs_fattr *fattr = info->fattr;
- struct nfs4_label *label = NULL;
+ struct nfs4_label *label = fattr->label;
error = nfs4_server_capabilities(server, mntfh);
if (error < 0) {
@@ -4010,23 +4010,17 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh,
return error;
}
- label = nfs4_label_alloc(server, GFP_KERNEL);
- if (IS_ERR(label))
- return PTR_ERR(label);
-
error = nfs4_proc_getattr(server, mntfh, fattr, label, NULL);
if (error < 0) {
dprintk("nfs4_get_root: getattr error = %d\n", -error);
- goto err_free_label;
+ goto out;
}
if (fattr->valid & NFS_ATTR_FATTR_FSID &&
!nfs_fsid_equal(&server->fsid, &fattr->fsid))
memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
-err_free_label:
- nfs4_label_free(label);
-
+out:
return error;
}
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index dada09b391c6..bb14bede6da5 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1179,7 +1179,6 @@ int nfs_get_tree_common(struct fs_context *fc)
struct super_block *s;
int (*compare_super)(struct super_block *, struct fs_context *) = nfs_compare_super;
struct nfs_server *server = ctx->server;
- unsigned long kflags = 0, kflags_out = 0;
int error;
ctx->server = NULL;
@@ -1239,26 +1238,6 @@ int nfs_get_tree_common(struct fs_context *fc)
goto error_splat_super;
}
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
- kflags |= SECURITY_LSM_NATIVE_LABELS;
- if (ctx->clone_data.sb) {
- if (d_inode(fc->root)->i_fop != &nfs_dir_operations) {
- error = -ESTALE;
- goto error_splat_root;
- }
- /* clone any lsm security options from the parent to the new sb */
- error = security_sb_clone_mnt_opts(ctx->clone_data.sb, s, kflags,
- &kflags_out);
- } else {
- error = security_sb_set_mnt_opts(s, fc->security,
- kflags, &kflags_out);
- }
- if (error)
- goto error_splat_root;
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
- !(kflags_out & SECURITY_LSM_NATIVE_LABELS))
- NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
-
s->s_flags |= SB_ACTIVE;
error = 0;
@@ -1268,10 +1247,6 @@ out:
out_err_nosb:
nfs_free_server(server);
goto out;
-
-error_splat_root:
- dput(fc->root);
- fc->root = NULL;
error_splat_super:
deactivate_locked_super(s);
goto out;
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