LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: David Howells <dhowells@redhat.com>
To: trond.myklebust@hammerspace.com, anna.schumaker@netapp.com
Cc: Al Viro <viro@zeniv.linux.org.uk>,
	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 15/23] nfs: get rid of ->set_security()
Date: Thu, 23 May 2019 17:18:01 +0100	[thread overview]
Message-ID: <155862828182.26654.5120276809942525177.stgit@warthog.procyon.org.uk> (raw)
In-Reply-To: <155862813755.26654.563679411147031501.stgit@warthog.procyon.org.uk>

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 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;


  parent reply	other threads:[~2019-05-23 16:18 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-23 16:15 [PATCH 00/23] nfs: Mount API conversion David Howells
2019-05-23 16:15 ` [PATCH 01/23] saner calling conventions for nfs_fs_mount_common() David Howells
2019-05-23 16:16 ` [PATCH 02/23] nfs: stash server into struct nfs_mount_info David Howells
2019-05-23 16:16 ` [PATCH 03/23] nfs: lift setting mount_info from nfs4_remote{, _referral}_mount David Howells
2019-05-23 16:16 ` [PATCH 04/23] nfs: fold nfs4_remote_fs_type and nfs4_remote_referral_fs_type David Howells
2019-05-23 16:16 ` [PATCH 05/23] nfs: don't bother setting/restoring export_path around do_nfs_root_mount() David Howells
2019-05-23 16:16 ` [PATCH 06/23] nfs4: fold nfs_do_root_mount/nfs_follow_remote_path David Howells
2019-05-23 16:16 ` [PATCH 07/23] nfs: lift setting mount_info from nfs_xdev_mount() David Howells
2019-05-23 16:17 ` [PATCH 08/23] nfs: stash nfs_subversion reference into nfs_mount_info David Howells
2019-05-23 16:17 ` [PATCH 09/23] nfs: don't bother passing nfs_subversion to ->try_mount() and nfs_fs_mount_common() David Howells
2019-05-23 16:17 ` [PATCH 10/23] nfs: merge xdev and remote file_system_type David Howells
2019-05-23 16:17 ` [PATCH 11/23] nfs: unexport nfs_fs_mount_common() David Howells
2019-05-23 16:17 ` [PATCH 12/23] nfs: don't pass nfs_subversion to ->create_server() David Howells
2019-05-23 16:17 ` [PATCH 13/23] nfs: get rid of mount_info ->fill_super() David Howells
2019-05-23 16:17 ` [PATCH 14/23] nfs_clone_sb_security(): simplify the check for server bogosity David Howells
2019-05-23 16:18 ` David Howells [this message]
2019-05-23 16:18 ` [PATCH 16/23] NFS: Move mount parameterisation bits into their own file David Howells
2019-05-23 16:18 ` [PATCH 17/23] NFS: Constify mount argument match tables David Howells
2019-05-23 16:18 ` [PATCH 18/23] NFS: Rename struct nfs_parsed_mount_data to struct nfs_fs_context David Howells
2019-05-23 16:18 ` [PATCH 19/23] NFS: Split nfs_parse_mount_options() David Howells
2019-05-23 16:18 ` [PATCH 20/23] NFS: Deindent nfs_fs_context_parse_option() David Howells
2019-05-23 16:18 ` [PATCH 21/23] NFS: Add a small buffer in nfs_fs_context to avoid string dup David Howells
2019-05-23 16:18 ` [PATCH 22/23] NFS: Do some tidying of the parsing code David Howells
2019-05-23 16:19 ` [PATCH 23/23] NFS: Add fs_context support David Howells
2019-05-25 23:08   ` Al Viro
2019-05-29 21:18   ` Schumaker, Anna
2019-06-06  9:41   ` David Howells

Reply instructions:

You may reply publicly 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=155862828182.26654.5120276809942525177.stgit@warthog.procyon.org.uk \
    --to=dhowells@redhat.com \
    --cc=anna.schumaker@netapp.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 \
    --subject='Re: [PATCH 15/23] nfs: get rid of ->set_security()' \
    /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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).