32 lines
703 B
C
32 lines
703 B
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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char _license[] SEC("license") = "GPL";
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int my_pid;
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int reject_capable;
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int reject_cmd;
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SEC("lsm/bpf_token_capable")
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int BPF_PROG(token_capable, struct bpf_token *token, int cap)
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{
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if (my_pid == 0 || my_pid != (bpf_get_current_pid_tgid() >> 32))
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return 0;
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if (reject_capable)
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return -1;
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return 0;
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}
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SEC("lsm/bpf_token_cmd")
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int BPF_PROG(token_cmd, struct bpf_token *token, enum bpf_cmd cmd)
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{
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if (my_pid == 0 || my_pid != (bpf_get_current_pid_tgid() >> 32))
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return 0;
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if (reject_cmd)
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return -1;
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return 0;
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}
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