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1// SPDX-License-Identifier: GPL-2.02/* Copyright (c) 2020 Facebook */3#include "bpf_iter.h"4#include <bpf/bpf_helpers.h>5 6char _license[] SEC("license") = "GPL";7 8int count = 0;9int tgid = 0;10int last_tgid = 0;11int unique_tgid_count = 0;12 13SEC("iter/task_file")14int dump_task_file(struct bpf_iter__task_file *ctx)15{16 struct seq_file *seq = ctx->meta->seq;17 struct task_struct *task = ctx->task;18 struct file *file = ctx->file;19 __u32 fd = ctx->fd;20 21 if (task == (void *)0 || file == (void *)0)22 return 0;23 24 if (ctx->meta->seq_num == 0) {25 count = 0;26 BPF_SEQ_PRINTF(seq, " tgid gid fd file\n");27 }28 29 if (tgid == task->tgid && task->tgid != task->pid)30 count++;31 32 if (last_tgid != task->tgid) {33 last_tgid = task->tgid;34 unique_tgid_count++;35 }36 37 BPF_SEQ_PRINTF(seq, "%8d %8d %8d %lx\n", task->tgid, task->pid, fd,38 (long)file->f_op);39 return 0;40}41