add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/configfs/inode.c
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..
@@ -1,29 +1,15 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /* -*- mode: c; c-basic-offset: 8; -*-
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  * vim: noexpandtab sw=8 ts=8 sts=0:
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  *
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  * inode.c - basic inode and dentry operations.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public
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- * License as published by the Free Software Foundation; either
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- * version 2 of the License, or (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public
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- * License along with this program; if not, write to the
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- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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- * Boston, MA 021110-1307, USA.
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  *
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  * Based on sysfs:
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  * 	sysfs is Copyright (C) 2001, 2002, 2003 Patrick Mochel
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  *
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  * configfs Copyright (C) 2005 Oracle.  All rights reserved.
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  *
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- * Please see Documentation/filesystems/configfs/configfs.txt for more
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+ * Please see Documentation/filesystems/configfs.rst for more
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  * information.
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  */
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15
 
..
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@@ -90,14 +76,11 @@
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 	if (ia_valid & ATTR_GID)
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 		sd_iattr->ia_gid = iattr->ia_gid;
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 	if (ia_valid & ATTR_ATIME)
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-		sd_iattr->ia_atime = timespec64_trunc(iattr->ia_atime,
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-						      inode->i_sb->s_time_gran);
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+		sd_iattr->ia_atime = iattr->ia_atime;
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 	if (ia_valid & ATTR_MTIME)
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-		sd_iattr->ia_mtime = timespec64_trunc(iattr->ia_mtime,
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-						      inode->i_sb->s_time_gran);
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+		sd_iattr->ia_mtime = iattr->ia_mtime;
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 	if (ia_valid & ATTR_CTIME)
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-		sd_iattr->ia_ctime = timespec64_trunc(iattr->ia_ctime,
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-						      inode->i_sb->s_time_gran);
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+		sd_iattr->ia_ctime = iattr->ia_ctime;
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 	if (ia_valid & ATTR_MODE) {
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 		umode_t mode = iattr->ia_mode;
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@@ -178,41 +161,27 @@
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 #endif /* CONFIG_LOCKDEP */
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-int configfs_create(struct dentry * dentry, umode_t mode, void (*init)(struct inode *))
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+struct inode *configfs_create(struct dentry *dentry, umode_t mode)
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 {
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-	int error = 0;
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 	struct inode *inode = NULL;
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 	struct configfs_dirent *sd;
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 	struct inode *p_inode;
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 	if (!dentry)
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-		return -ENOENT;
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+		return ERR_PTR(-ENOENT);
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 	if (d_really_is_positive(dentry))
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-		return -EEXIST;
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+		return ERR_PTR(-EEXIST);
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 	sd = dentry->d_fsdata;
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 	inode = configfs_new_inode(mode, sd, dentry->d_sb);
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 	if (!inode)
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-		return -ENOMEM;
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+		return ERR_PTR(-ENOMEM);
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 	p_inode = d_inode(dentry->d_parent);
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 	p_inode->i_mtime = p_inode->i_ctime = current_time(p_inode);
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 	configfs_set_inode_lock_class(sd, inode);
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-
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-	init(inode);
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-	if (S_ISDIR(mode) || S_ISLNK(mode)) {
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-		/*
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-		 * ->symlink(), ->mkdir(), configfs_register_subsystem() or
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-		 * create_default_group() - already hashed.
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-		 */
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-		d_instantiate(dentry, inode);
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-		dget(dentry);  /* pin link and directory dentries in core */
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-	} else {
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-		/* ->lookup() */
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-		d_add(dentry, inode);
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-	}
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-	return error;
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+	return inode;
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 }
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 /*