diff options
Diffstat (limited to 'kernel/bpf/btf.c')
-rw-r--r-- | kernel/bpf/btf.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c index 2322340694cf..eb56ac760547 100644 --- a/kernel/bpf/btf.c +++ b/kernel/bpf/btf.c @@ -2002,7 +2002,7 @@ static int btf_release(struct inode *inode, struct file *filp) return 0; } -static const struct file_operations btf_fops = { +const struct file_operations btf_fops = { .release = btf_release, }; @@ -2047,3 +2047,18 @@ struct btf *btf_get_by_fd(int fd) return btf; } + +int btf_get_info_by_fd(const struct btf *btf, + const union bpf_attr *attr, + union bpf_attr __user *uattr) +{ + void __user *udata = u64_to_user_ptr(attr->info.info); + u32 copy_len = min_t(u32, btf->data_size, + attr->info.info_len); + + if (copy_to_user(udata, btf->data, copy_len) || + put_user(btf->data_size, &uattr->info.info_len)) + return -EFAULT; + + return 0; +} |