diff options
| -rw-r--r-- | kernel/bpf/token.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/kernel/bpf/token.c b/kernel/bpf/token.c index 17212efcde60..a86fccd57e2d 100644 --- a/kernel/bpf/token.c +++ b/kernel/bpf/token.c @@ -152,6 +152,15 @@ int bpf_token_create(union bpf_attr *attr) goto out_path; } + mnt_opts = path.dentry->d_sb->s_fs_info; + if (mnt_opts->delegate_cmds == 0 && + mnt_opts->delegate_maps == 0 && + mnt_opts->delegate_progs == 0 && + mnt_opts->delegate_attachs == 0) { + err = -ENOENT; /* no BPF token delegation is set up */ + goto out_path; + } + mode = S_IFREG | ((S_IRUSR | S_IWUSR) & ~current_umask()); inode = bpf_get_inode(path.mnt->mnt_sb, NULL, mode); if (IS_ERR(inode)) { @@ -181,7 +190,6 @@ int bpf_token_create(union bpf_attr *attr) /* remember bpffs owning userns for future ns_capable() checks */ token->userns = get_user_ns(userns); - mnt_opts = path.dentry->d_sb->s_fs_info; token->allowed_cmds = mnt_opts->delegate_cmds; token->allowed_maps = mnt_opts->delegate_maps; token->allowed_progs = mnt_opts->delegate_progs; |