From adf2314fe667565258f304a04990d334defabeaf Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 10 Dec 2019 07:31:03 -0500 Subject: nfs: get rid of ->set_security() 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 Signed-off-by: Al Viro Signed-off-by: Anna Schumaker --- 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 65c8e353cb6b..a467e43fc682 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -137,7 +137,6 @@ 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; @@ -391,8 +390,6 @@ 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 30331558bd8e..bfe607374feb 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -233,7 +233,6 @@ 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 5020a43b31c9..f1c2d294073a 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 bec6c341f72c..de00f89dbe6e 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2550,52 +2550,6 @@ 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 void nfs_set_readahead(struct backing_dev_info *bdi, unsigned long iomax_pages) { @@ -2610,6 +2564,7 @@ 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, @@ -2670,7 +2625,26 @@ 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; @@ -2695,7 +2669,6 @@ 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; -- cgit v1.2.3