From 964f8363a1aba6cb4198bfaaac538b08f1c538f1 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 3 May 2018 19:17:52 +0300 Subject: debugfs: Re-use kstrtobool_from_user() Re-use kstrtobool_from_user() instead of open coded variant. Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- fs/debugfs/file.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) (limited to 'fs/debugfs') diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index 1f99678ff5d3..4fce1da7db23 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -796,19 +796,13 @@ EXPORT_SYMBOL_GPL(debugfs_read_file_bool); ssize_t debugfs_write_file_bool(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { - char buf[32]; - size_t buf_size; bool bv; int r; bool *val = file->private_data; struct dentry *dentry = F_DENTRY(file); - buf_size = min(count, (sizeof(buf)-1)); - if (copy_from_user(buf, user_buf, buf_size)) - return -EFAULT; - - buf[buf_size] = '\0'; - if (strtobool(buf, &bv) == 0) { + r = kstrtobool_from_user(user_buf, count, &bv); + if (!r) { r = debugfs_file_get(dentry); if (unlikely(r)) return r; -- cgit