add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/ocfs2/namei.c
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@@ -1,3 +1,4 @@
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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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@@ -19,21 +20,6 @@
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  *   linux/fs/minix/dir.c
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  *
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  *   Copyright (C) 1991, 1992 Linux Torvalds
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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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 #include <linux/fs.h>
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@@ -212,6 +198,7 @@
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 	 * callers. */
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 	if (S_ISDIR(mode))
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 		set_nlink(inode, 2);
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+	mode = mode_strip_sgid(dir, mode);
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 	inode_init_owner(inode, dir, mode);
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 	status = dquot_initialize(inode);
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 	if (status)
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@@ -245,6 +232,7 @@
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 	handle_t *handle = NULL;
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 	struct ocfs2_super *osb;
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 	struct ocfs2_dinode *dirfe;
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+	struct ocfs2_dinode *fe = NULL;
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 	struct buffer_head *new_fe_bh = NULL;
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 	struct inode *inode = NULL;
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 	struct ocfs2_alloc_context *inode_ac = NULL;
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@@ -254,6 +242,7 @@
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 	int want_meta = 0;
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 	int xattr_credits = 0;
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 	struct ocfs2_security_xattr_info si = {
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+		.name = NULL,
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 		.enable = 1,
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 	};
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 	int did_quota_inode = 0;
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@@ -395,6 +384,7 @@
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 		goto leave;
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 	}
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+	fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
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 	if (S_ISDIR(mode)) {
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 		status = ocfs2_fill_new_dir(osb, handle, dir, inode,
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 					    new_fe_bh, data_ac, meta_ac);
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@@ -420,7 +410,7 @@
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 	if (status < 0) {
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 		mlog_errno(status);
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-		goto leave;
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+		goto roll_back;
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 	}
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 	if (si.enable) {
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@@ -428,7 +418,7 @@
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 						 meta_ac, data_ac);
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 		if (status < 0) {
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 			mlog_errno(status);
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-			goto leave;
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+			goto roll_back;
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 		}
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 	}
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@@ -441,7 +431,7 @@
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 					  OCFS2_I(dir)->ip_blkno);
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 	if (status) {
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 		mlog_errno(status);
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-		goto leave;
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+		goto roll_back;
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 	}
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 	dl = dentry->d_fsdata;
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@@ -451,17 +441,27 @@
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 				 &lookup);
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 	if (status < 0) {
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 		mlog_errno(status);
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-		goto leave;
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+		goto roll_back;
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 	}
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 	insert_inode_hash(inode);
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 	d_instantiate(dentry, inode);
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 	status = 0;
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+
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+roll_back:
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+	if (status < 0 && S_ISDIR(mode)) {
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+		ocfs2_add_links_count(dirfe, -1);
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+		drop_nlink(dir);
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+	}
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+
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 leave:
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 	if (status < 0 && did_quota_inode)
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 		dquot_free_inode(inode);
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-	if (handle)
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+	if (handle) {
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+		if (status < 0 && fe)
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+			ocfs2_set_links_count(fe, 0);
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 		ocfs2_commit_trans(osb, handle);
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+	}
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 	ocfs2_inode_unlock(dir, 1);
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 	if (did_block_signals)
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@@ -600,8 +600,7 @@
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 			mlog_errno(status);
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 	}
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-	oi->i_sync_tid = handle->h_transaction->t_tid;
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-	oi->i_datasync_tid = handle->h_transaction->t_tid;
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+	ocfs2_update_inode_fsync_trans(handle, inode, 1);
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 leave:
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 	if (status < 0) {
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@@ -639,18 +638,9 @@
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 		return status;
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 	}
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-	status = __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh,
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+	return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh,
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 				    parent_fe_bh, handle, inode_ac,
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 				    fe_blkno, suballoc_loc, suballoc_bit);
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-	if (status < 0) {
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-		u64 bg_blkno = ocfs2_which_suballoc_group(fe_blkno, suballoc_bit);
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-		int tmp = ocfs2_free_suballoc_bits(handle, inode_ac->ac_inode,
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-				inode_ac->ac_bh, suballoc_bit, bg_blkno, 1);
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-		if (tmp)
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-			mlog_errno(tmp);
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-	}
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-
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-	return status;
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 }
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 static int ocfs2_mkdir(struct inode *dir,
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@@ -1542,6 +1532,10 @@
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 		status = ocfs2_add_entry(handle, new_dentry, old_inode,
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 					 OCFS2_I(old_inode)->ip_blkno,
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 					 new_dir_bh, &target_insert);
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+		if (status < 0) {
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+			mlog_errno(status);
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+			goto bail;
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+		}
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 	}
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 	old_inode->i_ctime = current_time(old_inode);
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@@ -1812,6 +1806,7 @@
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 	int want_clusters = 0;
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 	int xattr_credits = 0;
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 	struct ocfs2_security_xattr_info si = {
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+		.name = NULL,
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 		.enable = 1,
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 	};
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 	int did_quota = 0, did_quota_inode = 0;
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@@ -2031,8 +2026,11 @@
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 					ocfs2_clusters_to_bytes(osb->sb, 1));
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 	if (status < 0 && did_quota_inode)
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 		dquot_free_inode(inode);
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-	if (handle)
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+	if (handle) {
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+		if (status < 0 && fe)
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+			ocfs2_set_links_count(fe, 0);
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 		ocfs2_commit_trans(osb, handle);
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+	}
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 	ocfs2_inode_unlock(dir, 1);
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 	if (did_block_signals)
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@@ -2500,14 +2498,13 @@
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 	struct inode *inode = NULL;
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 	struct inode *orphan_dir = NULL;
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 	struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
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-	struct ocfs2_dinode *di = NULL;
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 	handle_t *handle = NULL;
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 	char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
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 	struct buffer_head *parent_di_bh = NULL;
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 	struct buffer_head *new_di_bh = NULL;
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 	struct ocfs2_alloc_context *inode_ac = NULL;
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 	struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
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-	u64 uninitialized_var(di_blkno), suballoc_loc;
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+	u64 di_blkno, suballoc_loc;
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 	u16 suballoc_bit;
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 	status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
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@@ -2566,7 +2563,6 @@
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 		goto leave;
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 	}
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-	di = (struct ocfs2_dinode *)new_di_bh->b_data;
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 	status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name,
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 				  &orphan_insert, orphan_dir, false);
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 	if (status < 0) {