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authorRasmus Villemoes <linux@rasmusvillemoes.dk>2021-03-26 18:14:11 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-04-05 14:17:51 +0300
commitc8a9c285f136f0cc65ac8328cd1710b155ad3df8 (patch)
treea4ebdffe10e58368383040d1f1fdc5c79c77fad7 /fs/debugfs
parent72a91f192da032b68519fafaecce03fd002d669a (diff)
downloadlinux-c8a9c285f136f0cc65ac8328cd1710b155ad3df8.tar.xz
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 <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20210326151411.732220-1-linux@rasmusvillemoes.dk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/debugfs')
-rw-r--r--fs/debugfs/file.c3
1 files changed, 1 insertions, 2 deletions
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);