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mcoverlayfs: support mount options(nocopyupw, nofscheck)

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This commit is contained in:
Yoichi Umezawa
2015-11-25 15:34:58 +09:00
parent 544971d665
commit 65dda3f24e
3 changed files with 82 additions and 31 deletions
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26
executer/kernel/mcoverlayfs/inode.c
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@@ -345,20 +345,22 @@ static int ovl_dentry_open(struct dentry *dentry, struct file *file,
bool want_write = false;
type = ovl_path_real(dentry, &realpath);
if (ovl_open_need_copy_up(file->f_flags, type, realpath.dentry)) {
want_write = true;
err = ovl_want_write(dentry);
if (err)
goto out;
if (!ovl_is_nocopyupw(dentry)) {
if (ovl_open_need_copy_up(file->f_flags, type, realpath.dentry)) {
want_write = true;
err = ovl_want_write(dentry);
if (err)
goto out;
if (file->f_flags & O_TRUNC)
err = ovl_copy_up_last(dentry, NULL, true);
else
err = ovl_copy_up(dentry);
if (err)
goto out_drop_write;
if (file->f_flags & O_TRUNC)
err = ovl_copy_up_last(dentry, NULL, true);
else
err = ovl_copy_up(dentry);
if (err)
goto out_drop_write;
ovl_path_upper(dentry, &realpath);
ovl_path_upper(dentry, &realpath);
}
}
err = vfs_open(&realpath, file, cred);