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// 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";
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