From c8a9c285f136f0cc65ac8328cd1710b155ad3df8 Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Fri, 26 Mar 2021 16:14:11 +0100 Subject: debugfs: drop pointless nul-termination in debugfs_read_file_bool() simple_read_from_buffer() doesn't care about any bytes in the buffer beyond "available". Making the buffer nul-terminated is therefore completely pointless. Signed-off-by: Rasmus Villemoes Link: https://lore.kernel.org/r/20210326151411.732220-1-linux@rasmusvillemoes.dk Signed-off-by: Greg Kroah-Hartman --- fs/debugfs/file.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'fs/debugfs') diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index 686e0ad28788..9979d981e9be 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -773,7 +773,7 @@ EXPORT_SYMBOL_GPL(debugfs_create_atomic_t); ssize_t debugfs_read_file_bool(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { - char buf[3]; + char buf[2]; bool val; int r; struct dentry *dentry = F_DENTRY(file); @@ -789,7 +789,6 @@ ssize_t debugfs_read_file_bool(struct file *file, char __user *user_buf, else buf[0] = 'N'; buf[1] = '\n'; - buf[2] = 0x00; return simple_read_from_buffer(user_buf, count, ppos, buf, 2); } EXPORT_SYMBOL_GPL(debugfs_read_file_bool); -- cgit