Linux-NFS Archive on lore.kernel.org
 help / color / Atom feed
From: Scott Mayhew <smayhew@redhat.com>
To: anna.schumaker@netapp.com, trond.myklebust@hammerspace.com
Cc: dhowells@redhat.com, viro@zeniv.linux.org.uk,
	linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v4 15/26] nfs: get rid of ->set_security()
Date: Fri, 13 Sep 2019 08:17:37 -0400
Message-ID: <20190913121748.25391-16-smayhew@redhat.com> (raw)
In-Reply-To: <20190913121748.25391-1-smayhew@redhat.com>

From: Al Viro <viro@zeniv.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@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.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 fa737e37f7c9..d512ec394559 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -145,7 +145,6 @@ 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;
@@ -399,8 +398,6 @@ 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 7bc5b9b8f5ea..72a99f9c7390 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -230,7 +230,6 @@ 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 d387c3c3b600..38f2eec7e1ad 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -201,8 +201,6 @@ 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),
@@ -224,7 +222,6 @@ 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 6f4983fc3937..d8702e57f7fc 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2541,52 +2541,6 @@ 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)
 {
@@ -2594,6 +2548,7 @@ 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,
@@ -2654,7 +2609,26 @@ 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;
 
@@ -2679,7 +2653,6 @@ 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;
-- 
2.17.2


  parent reply index

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-13 12:17 [PATCH v4 00/26] nfs: Mount API conversion Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 01/26] saner calling conventions for nfs_fs_mount_common() Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 02/26] nfs: stash server into struct nfs_mount_info Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 03/26] nfs: lift setting mount_info from nfs4_remote{,_referral}_mount Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 04/26] nfs: fold nfs4_remote_fs_type and nfs4_remote_referral_fs_type Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 05/26] nfs: don't bother setting/restoring export_path around do_nfs_root_mount() Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 06/26] nfs4: fold nfs_do_root_mount/nfs_follow_remote_path Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 07/26] nfs: lift setting mount_info from nfs_xdev_mount() Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 08/26] nfs: stash nfs_subversion reference into nfs_mount_info Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 09/26] nfs: don't bother passing nfs_subversion to ->try_mount() and nfs_fs_mount_common() Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 10/26] nfs: merge xdev and remote file_system_type Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 11/26] nfs: unexport nfs_fs_mount_common() Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 12/26] nfs: don't pass nfs_subversion to ->create_server() Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 13/26] nfs: get rid of mount_info ->fill_super() Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 14/26] nfs_clone_sb_security(): simplify the check for server bogosity Scott Mayhew
2019-09-13 12:17 ` Scott Mayhew [this message]
2019-09-13 12:17 ` [PATCH v4 16/26] NFS: Move mount parameterisation bits into their own file Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 17/26] NFS: Constify mount argument match tables Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 18/26] NFS: Rename struct nfs_parsed_mount_data to struct nfs_fs_context Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 19/26] NFS: Split nfs_parse_mount_options() Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 20/26] NFS: Deindent nfs_fs_context_parse_option() Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 21/26] NFS: Add a small buffer in nfs_fs_context to avoid string dup Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 22/26] NFS: Do some tidying of the parsing code Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 23/26] NFS: rename nfs_fs_context pointer arg in a few functions Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 24/26] NFS: Convert mount option parsing to use functionality from fs_parser.h Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 25/26] NFS: Add fs_context support Scott Mayhew
2019-09-13 12:17 ` [PATCH v4 26/26] NFS: Attach supplementary error information to fs_context Scott Mayhew

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190913121748.25391-16-smayhew@redhat.com \
    --to=smayhew@redhat.com \
    --cc=anna.schumaker@netapp.com \
    --cc=dhowells@redhat.com \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=trond.myklebust@hammerspace.com \
    --cc=viro@zeniv.linux.org.uk \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-NFS Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-nfs/0 linux-nfs/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-nfs linux-nfs/ https://lore.kernel.org/linux-nfs \
		linux-nfs@vger.kernel.org
	public-inbox-index linux-nfs

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-nfs


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git