diff options
| -rw-r--r-- | kernel/bpf/inode.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c index 81e2f6995adb..bf6da59ae0d0 100644 --- a/kernel/bpf/inode.c +++ b/kernel/bpf/inode.c @@ -178,6 +178,9 @@ static int bpf_mkmap(struct dentry *dentry, umode_t mode, void *arg) static struct dentry * bpf_lookup(struct inode *dir, struct dentry *dentry, unsigned flags) { + /* Dots in names (e.g. "/sys/fs/bpf/foo.bar") are reserved for future + * extensions. + */ if (strchr(dentry->d_name.name, '.')) return ERR_PTR(-EPERM); |