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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020 Facebook */
/* "undefine" structs in vmlinux.h, because we "override" them below */
#define bpf_iter_meta bpf_iter_meta___not_used
#define bpf_iter__task_file bpf_iter__task_file___not_used
#include "vmlinux.h"
#undef bpf_iter_meta
#undef bpf_iter__task_file
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
char _license[] SEC("license") = "GPL";
struct bpf_iter_meta {
struct seq_file *seq;
__u64 session_id;
__u64 seq_num;
} __attribute__((preserve_access_index));
struct bpf_iter__task_file {
struct bpf_iter_meta *meta;
struct task_struct *task;
__u32 fd;
struct file *file;
} __attribute__((preserve_access_index));
SEC("iter/task_file")
int dump_task_file(struct bpf_iter__task_file *ctx)
{
struct seq_file *seq = ctx->meta->seq;
struct task_struct *task = ctx->task;
__u32 fd = ctx->fd;
struct file *file = ctx->file;
if (task == (void *)0 || file == (void *)0)
return 0;
if (ctx->meta->seq_num == 0)
BPF_SEQ_PRINTF(seq, " tgid gid fd file\n");
BPF_SEQ_PRINTF(seq, "%8d %8d %8d %lx\n", task->tgid, task->pid, fd,
(long)file->f_op);
return 0;
}
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