118 lines
2.3 KiB
C
118 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright (c) 2022, Oracle and/or its affiliates. */
|
|
|
|
#include "vmlinux.h"
|
|
|
|
#include <bpf/bpf_core_read.h>
|
|
#include <bpf/bpf_helpers.h>
|
|
#include <bpf/bpf_tracing.h>
|
|
#include "bpf_misc.h"
|
|
|
|
int uprobe_byname_parm1 = 0;
|
|
int uprobe_byname_ran = 0;
|
|
int uretprobe_byname_rc = 0;
|
|
int uretprobe_byname_ret = 0;
|
|
int uretprobe_byname_ran = 0;
|
|
u64 uprobe_byname2_parm1 = 0;
|
|
int uprobe_byname2_ran = 0;
|
|
u64 uretprobe_byname2_rc = 0;
|
|
int uretprobe_byname2_ran = 0;
|
|
|
|
int test_pid;
|
|
|
|
int a[8];
|
|
|
|
/* This program cannot auto-attach, but that should not stop other
|
|
* programs from attaching.
|
|
*/
|
|
SEC("uprobe")
|
|
int handle_uprobe_noautoattach(struct pt_regs *ctx)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
SEC("uprobe//proc/self/exe:autoattach_trigger_func")
|
|
int BPF_UPROBE(handle_uprobe_byname
|
|
, int arg1
|
|
, int arg2
|
|
, int arg3
|
|
#if FUNC_REG_ARG_CNT > 3
|
|
, int arg4
|
|
#endif
|
|
#if FUNC_REG_ARG_CNT > 4
|
|
, int arg5
|
|
#endif
|
|
#if FUNC_REG_ARG_CNT > 5
|
|
, int arg6
|
|
#endif
|
|
#if FUNC_REG_ARG_CNT > 6
|
|
, int arg7
|
|
#endif
|
|
#if FUNC_REG_ARG_CNT > 7
|
|
, int arg8
|
|
#endif
|
|
)
|
|
{
|
|
uprobe_byname_parm1 = PT_REGS_PARM1_CORE(ctx);
|
|
uprobe_byname_ran = 1;
|
|
|
|
a[0] = arg1;
|
|
a[1] = arg2;
|
|
a[2] = arg3;
|
|
#if FUNC_REG_ARG_CNT > 3
|
|
a[3] = arg4;
|
|
#endif
|
|
#if FUNC_REG_ARG_CNT > 4
|
|
a[4] = arg5;
|
|
#endif
|
|
#if FUNC_REG_ARG_CNT > 5
|
|
a[5] = arg6;
|
|
#endif
|
|
#if FUNC_REG_ARG_CNT > 6
|
|
a[6] = arg7;
|
|
#endif
|
|
#if FUNC_REG_ARG_CNT > 7
|
|
a[7] = arg8;
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
SEC("uretprobe//proc/self/exe:autoattach_trigger_func")
|
|
int BPF_URETPROBE(handle_uretprobe_byname, int ret)
|
|
{
|
|
uretprobe_byname_rc = PT_REGS_RC_CORE(ctx);
|
|
uretprobe_byname_ret = ret;
|
|
uretprobe_byname_ran = 2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
SEC("uprobe/libc.so.6:fopen")
|
|
int BPF_UPROBE(handle_uprobe_byname2, const char *pathname, const char *mode)
|
|
{
|
|
int pid = bpf_get_current_pid_tgid() >> 32;
|
|
|
|
/* ignore irrelevant invocations */
|
|
if (test_pid != pid)
|
|
return 0;
|
|
uprobe_byname2_parm1 = (u64)(long)pathname;
|
|
uprobe_byname2_ran = 3;
|
|
return 0;
|
|
}
|
|
|
|
SEC("uretprobe/libc.so.6:fopen")
|
|
int BPF_URETPROBE(handle_uretprobe_byname2, void *ret)
|
|
{
|
|
int pid = bpf_get_current_pid_tgid() >> 32;
|
|
|
|
/* ignore irrelevant invocations */
|
|
if (test_pid != pid)
|
|
return 0;
|
|
uretprobe_byname2_rc = (u64)(long)ret;
|
|
uretprobe_byname2_ran = 4;
|
|
return 0;
|
|
}
|
|
|
|
char _license[] SEC("license") = "GPL";
|