diff options
Diffstat (limited to 'target/linux/generic/pending-4.4/052-01-ubifs-Implement-O_TMPFILE.patch')
-rw-r--r-- | target/linux/generic/pending-4.4/052-01-ubifs-Implement-O_TMPFILE.patch | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/target/linux/generic/pending-4.4/052-01-ubifs-Implement-O_TMPFILE.patch b/target/linux/generic/pending-4.4/052-01-ubifs-Implement-O_TMPFILE.patch deleted file mode 100644 index 1c55a89acf..0000000000 --- a/target/linux/generic/pending-4.4/052-01-ubifs-Implement-O_TMPFILE.patch +++ /dev/null @@ -1,99 +0,0 @@ -From: Richard Weinberger <richard@nod.at> -Date: Tue, 13 Sep 2016 16:18:55 +0200 -Subject: [PATCH] ubifs: Implement O_TMPFILE - -This patchs adds O_TMPFILE support to UBIFS. -A temp file is a reference to an unlinked inode, a user -holding the reference can use it. As soon it is being closed -all data vanishes. - -Signed-off-by: Richard Weinberger <richard@nod.at> ---- - ---- a/fs/ubifs/dir.c -+++ b/fs/ubifs/dir.c -@@ -301,6 +301,76 @@ out_budg: - return err; - } - -+static int ubifs_tmpfile(struct inode *dir, struct dentry *dentry, -+ umode_t mode) -+{ -+ struct inode *inode; -+ struct ubifs_info *c = dir->i_sb->s_fs_info; -+ struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1}; -+ struct ubifs_budget_req ino_req = { .dirtied_ino = 1 }; -+ struct ubifs_inode *ui, *dir_ui = ubifs_inode(dir); -+ int err, instantiated = 0; -+ -+ /* -+ * Budget request settings: new dirty inode, new direntry, -+ * budget for dirtied inode will be released via writeback. -+ */ -+ -+ dbg_gen("dent '%pd', mode %#hx in dir ino %lu", -+ dentry, mode, dir->i_ino); -+ -+ err = ubifs_budget_space(c, &req); -+ if (err) -+ return err; -+ -+ err = ubifs_budget_space(c, &ino_req); -+ if (err) { -+ ubifs_release_budget(c, &req); -+ return err; -+ } -+ -+ inode = ubifs_new_inode(c, dir, mode); -+ if (IS_ERR(inode)) { -+ err = PTR_ERR(inode); -+ goto out_budg; -+ } -+ ui = ubifs_inode(inode); -+ -+ err = ubifs_init_security(dir, inode, &dentry->d_name); -+ if (err) -+ goto out_inode; -+ -+ mutex_lock(&ui->ui_mutex); -+ insert_inode_hash(inode); -+ d_tmpfile(dentry, inode); -+ ubifs_assert(ui->dirty); -+ instantiated = 1; -+ mutex_unlock(&ui->ui_mutex); -+ -+ mutex_lock(&dir_ui->ui_mutex); -+ err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 1, 0); -+ if (err) -+ goto out_cancel; -+ mutex_unlock(&dir_ui->ui_mutex); -+ -+ ubifs_release_budget(c, &req); -+ -+ return 0; -+ -+out_cancel: -+ mutex_unlock(&dir_ui->ui_mutex); -+out_inode: -+ make_bad_inode(inode); -+ if (!instantiated) -+ iput(inode); -+out_budg: -+ ubifs_release_budget(c, &req); -+ if (!instantiated) -+ ubifs_release_budget(c, &ino_req); -+ ubifs_err(c, "cannot create temporary file, error %d", err); -+ return err; -+} -+ - /** - * vfs_dent_type - get VFS directory entry type. - * @type: UBIFS directory entry type -@@ -1195,6 +1265,7 @@ const struct inode_operations ubifs_dir_ - #ifdef CONFIG_UBIFS_ATIME_SUPPORT - .update_time = ubifs_update_time, - #endif -+ .tmpfile = ubifs_tmpfile, - }; - - const struct file_operations ubifs_dir_operations = { |