mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
2bf3e2ef42
There are two files in the tree called libbpf.h which is becoming problematic. Most samples don't actually need the local libbpf.h they simply include it to get to bpf/bpf.h. Include bpf/bpf.h directly instead. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
/* Copyright (c) 2016 Sargun Dhillon <sargun@sargun.me>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of version 2 of the GNU General Public
|
|
* License as published by the Free Software Foundation.
|
|
*/
|
|
|
|
#define _GNU_SOURCE
|
|
#include <stdio.h>
|
|
#include <linux/bpf.h>
|
|
#include <unistd.h>
|
|
#include <bpf/bpf.h>
|
|
#include "bpf_load.h"
|
|
#include <linux/bpf.h>
|
|
#include "cgroup_helpers.h"
|
|
|
|
#define CGROUP_PATH "/my-cgroup"
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
pid_t remote_pid, local_pid = getpid();
|
|
int cg2, idx = 0, rc = 0;
|
|
char filename[256];
|
|
|
|
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
|
|
if (load_bpf_file(filename)) {
|
|
printf("%s", bpf_log_buf);
|
|
return 1;
|
|
}
|
|
|
|
if (setup_cgroup_environment())
|
|
goto err;
|
|
|
|
cg2 = create_and_get_cgroup(CGROUP_PATH);
|
|
|
|
if (!cg2)
|
|
goto err;
|
|
|
|
if (bpf_map_update_elem(map_fd[0], &idx, &cg2, BPF_ANY)) {
|
|
log_err("Adding target cgroup to map");
|
|
goto err;
|
|
}
|
|
|
|
if (join_cgroup(CGROUP_PATH))
|
|
goto err;
|
|
|
|
/*
|
|
* The installed helper program catched the sync call, and should
|
|
* write it to the map.
|
|
*/
|
|
|
|
sync();
|
|
bpf_map_lookup_elem(map_fd[1], &idx, &remote_pid);
|
|
|
|
if (local_pid != remote_pid) {
|
|
fprintf(stderr,
|
|
"BPF Helper didn't write correct PID to map, but: %d\n",
|
|
remote_pid);
|
|
goto err;
|
|
}
|
|
|
|
/* Verify the negative scenario; leave the cgroup */
|
|
if (join_cgroup("/"))
|
|
goto err;
|
|
|
|
remote_pid = 0;
|
|
bpf_map_update_elem(map_fd[1], &idx, &remote_pid, BPF_ANY);
|
|
|
|
sync();
|
|
bpf_map_lookup_elem(map_fd[1], &idx, &remote_pid);
|
|
|
|
if (local_pid == remote_pid) {
|
|
fprintf(stderr, "BPF cgroup negative test did not work\n");
|
|
goto err;
|
|
}
|
|
|
|
goto out;
|
|
err:
|
|
rc = 1;
|
|
|
|
out:
|
|
close(cg2);
|
|
cleanup_cgroup_environment();
|
|
return rc;
|
|
}
|