79 lines
1.3 KiB
C
79 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
// Copyright (c) 2020 Anton Protopopov
|
|
//
|
|
// Based on vfsstat(8) from BCC by Brendan Gregg
|
|
#include <vmlinux.h>
|
|
#include <bpf/bpf_helpers.h>
|
|
#include <bpf/bpf_tracing.h>
|
|
#include "vfsstat.h"
|
|
|
|
__u64 stats[S_MAXSTAT] = {};
|
|
|
|
static __always_inline int inc_stats(int key)
|
|
{
|
|
__atomic_add_fetch(&stats[key], 1, __ATOMIC_RELAXED);
|
|
return 0;
|
|
}
|
|
|
|
SEC("kprobe/vfs_read")
|
|
int BPF_KPROBE(kprobe_vfs_read)
|
|
{
|
|
return inc_stats(S_READ);
|
|
}
|
|
|
|
SEC("kprobe/vfs_write")
|
|
int BPF_KPROBE(kprobe_vfs_write)
|
|
{
|
|
return inc_stats(S_WRITE);
|
|
}
|
|
|
|
SEC("kprobe/vfs_fsync")
|
|
int BPF_KPROBE(kprobe_vfs_fsync)
|
|
{
|
|
return inc_stats(S_FSYNC);
|
|
}
|
|
|
|
SEC("kprobe/vfs_open")
|
|
int BPF_KPROBE(kprobe_vfs_open)
|
|
{
|
|
return inc_stats(S_OPEN);
|
|
}
|
|
|
|
SEC("kprobe/vfs_create")
|
|
int BPF_KPROBE(kprobe_vfs_create)
|
|
{
|
|
return inc_stats(S_CREATE);
|
|
}
|
|
|
|
SEC("fentry/vfs_read")
|
|
int BPF_PROG(fentry_vfs_read)
|
|
{
|
|
return inc_stats(S_READ);
|
|
}
|
|
|
|
SEC("fentry/vfs_write")
|
|
int BPF_PROG(fentry_vfs_write)
|
|
{
|
|
return inc_stats(S_WRITE);
|
|
}
|
|
|
|
SEC("fentry/vfs_fsync")
|
|
int BPF_PROG(fentry_vfs_fsync)
|
|
{
|
|
return inc_stats(S_FSYNC);
|
|
}
|
|
|
|
SEC("fentry/vfs_open")
|
|
int BPF_PROG(fentry_vfs_open)
|
|
{
|
|
return inc_stats(S_OPEN);
|
|
}
|
|
|
|
SEC("fentry/vfs_create")
|
|
int BPF_PROG(fentry_vfs_create)
|
|
{
|
|
return inc_stats(S_CREATE);
|
|
}
|
|
|
|
char LICENSE[] SEC("license") = "GPL";
|