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Message-ID: <155862828182.26654.5120276809942525177.stgit@warthog.procyon.org.uk>
Date: Thu, 23 May 2019 17:18:01 +0100
From: David Howells <dhowells@...hat.com>
To: trond.myklebust@...merspace.com, anna.schumaker@...app.com
Cc: Al Viro <viro@...iv.linux.org.uk>, dhowells@...hat.com,
viro@...iv.linux.org.uk, linux-nfs@...r.kernel.org,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 15/23] nfs: get rid of ->set_security()
From: Al Viro <viro@...iv.linux.org.uk>
it's always either nfs_set_sb_security() or nfs_clone_sb_security(),
the choice being controlled by mount_info->cloned != NULL. No need
to add methods, especially when both instances live right next to
the caller and are never accessed anywhere else.
Reviewed-by: David Howells <dhowells@...hat.com>
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
fs/nfs/internal.h | 3 --
fs/nfs/namespace.c | 1 -
fs/nfs/nfs4super.c | 3 --
fs/nfs/super.c | 69 ++++++++++++++++------------------------------------
4 files changed, 21 insertions(+), 55 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 61a480c06a76..1665e0935241 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -144,7 +144,6 @@ struct nfs_mount_request {
struct nfs_mount_info {
unsigned int inherited_bsize;
- int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct nfs_parsed_mount_data *parsed;
struct nfs_clone_mount *cloned;
struct nfs_server *server;
@@ -398,8 +397,6 @@ extern struct file_system_type nfs4_referral_fs_type;
#endif
bool nfs_auth_info_match(const struct nfs_auth_info *, rpc_authflavor_t);
struct dentry *nfs_try_mount(int, const char *, struct nfs_mount_info *);
-int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
-int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
void nfs_kill_super(struct super_block *);
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 26f99ac5f5be..1c4cb8914b20 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -229,7 +229,6 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
};
struct nfs_mount_info mount_info = {
.inherited_bsize = sb->s_blocksize_bits,
- .set_security = nfs_clone_sb_security,
.cloned = &mountdata,
.mntfh = fh,
.nfs_mod = NFS_SB(sb)->nfs_client->cl_nfs_mod,
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index aaae3b6f93b6..513861b38b72 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -200,8 +200,6 @@ struct dentry *nfs4_try_mount(int flags, const char *dev_name,
struct nfs_parsed_mount_data *data = mount_info->parsed;
struct dentry *res;
- mount_info->set_security = nfs_set_sb_security;
-
dfprintk(MOUNT, "--> nfs4_try_mount()\n");
res = do_nfs4_mount(nfs4_create_server(mount_info),
@@ -223,7 +221,6 @@ static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
{
struct nfs_clone_mount *data = raw_data;
struct nfs_mount_info mount_info = {
- .set_security = nfs_clone_sb_security,
.cloned = data,
.nfs_mod = &nfs_v4,
};
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index a78f409e7634..37e922324e99 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2518,52 +2518,6 @@ static void nfs_get_cache_cookie(struct super_block *sb,
}
#endif
-int nfs_set_sb_security(struct super_block *s, struct dentry *mntroot,
- struct nfs_mount_info *mount_info)
-{
- int error;
- unsigned long kflags = 0, kflags_out = 0;
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
- kflags |= SECURITY_LSM_NATIVE_LABELS;
-
- error = security_sb_set_mnt_opts(s, mount_info->parsed->lsm_opts,
- kflags, &kflags_out);
- if (error)
- goto err;
-
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
- !(kflags_out & SECURITY_LSM_NATIVE_LABELS))
- NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
-err:
- return error;
-}
-EXPORT_SYMBOL_GPL(nfs_set_sb_security);
-
-int nfs_clone_sb_security(struct super_block *s, struct dentry *mntroot,
- struct nfs_mount_info *mount_info)
-{
- int error;
- unsigned long kflags = 0, kflags_out = 0;
-
- /* clone any lsm security options from the parent to the new sb */
- if (d_inode(mntroot)->i_fop != &nfs_dir_operations)
- return -ESTALE;
-
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
- kflags |= SECURITY_LSM_NATIVE_LABELS;
-
- error = security_sb_clone_mnt_opts(mount_info->cloned->sb, s, kflags,
- &kflags_out);
- if (error)
- return error;
-
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
- !(kflags_out & SECURITY_LSM_NATIVE_LABELS))
- NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
- return 0;
-}
-EXPORT_SYMBOL_GPL(nfs_clone_sb_security);
-
static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
struct nfs_mount_info *mount_info)
{
@@ -2571,6 +2525,7 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
struct dentry *mntroot = ERR_PTR(-ENOMEM);
int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
struct nfs_server *server = mount_info->server;
+ unsigned long kflags = 0, kflags_out = 0;
struct nfs_sb_mountdata sb_mntdata = {
.mntflags = flags,
.server = server,
@@ -2631,7 +2586,26 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
if (IS_ERR(mntroot))
goto error_splat_super;
- error = mount_info->set_security(s, mntroot, mount_info);
+
+ if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
+ kflags |= SECURITY_LSM_NATIVE_LABELS;
+ if (mount_info->cloned) {
+ if (d_inode(mntroot)->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(mount_info->cloned->sb, s, kflags,
+ &kflags_out);
+ } else {
+ error = security_sb_set_mnt_opts(s, mount_info->parsed->lsm_opts,
+ 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;
if (error)
goto error_splat_root;
@@ -2656,7 +2630,6 @@ struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data)
{
struct nfs_mount_info mount_info = {
- .set_security = nfs_set_sb_security,
};
struct dentry *mntroot = ERR_PTR(-ENOMEM);
struct nfs_subversion *nfs_mod;
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