1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright (c) 2020 Facebook */
 3#include <vmlinux.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}

 1// SPDX-License-Identifier: GPL-2.0
 2/* 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}