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Diffstat (limited to 'samples/bpf/test_probe_write_user.bpf.c')
-rw-r--r--samples/bpf/test_probe_write_user.bpf.c52
1 files changed, 0 insertions, 52 deletions
diff --git a/samples/bpf/test_probe_write_user.bpf.c b/samples/bpf/test_probe_write_user.bpf.c
deleted file mode 100644
index a4f3798b7fb0..000000000000
--- a/samples/bpf/test_probe_write_user.bpf.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/* 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.
- */
-#include "vmlinux.h"
-#include <string.h>
-#include <linux/version.h>
-#include <bpf/bpf_helpers.h>
-#include <bpf/bpf_tracing.h>
-#include <bpf/bpf_core_read.h>
-
-struct {
- __uint(type, BPF_MAP_TYPE_HASH);
- __type(key, struct sockaddr_in);
- __type(value, struct sockaddr_in);
- __uint(max_entries, 256);
-} dnat_map SEC(".maps");
-
-/* kprobe is NOT a stable ABI
- * kernel functions can be removed, renamed or completely change semantics.
- * Number of arguments and their positions can change, etc.
- * In such case this bpf+kprobe example will no longer be meaningful
- *
- * This example sits on a syscall, and the syscall ABI is relatively stable
- * of course, across platforms, and over time, the ABI may change.
- */
-SEC("ksyscall/connect")
-int BPF_KSYSCALL(bpf_prog1, int fd, struct sockaddr_in *uservaddr,
- int addrlen)
-{
- struct sockaddr_in new_addr, orig_addr = {};
- struct sockaddr_in *mapped_addr;
-
- if (addrlen > sizeof(orig_addr))
- return 0;
-
- if (bpf_probe_read_user(&orig_addr, sizeof(orig_addr), uservaddr) != 0)
- return 0;
-
- mapped_addr = bpf_map_lookup_elem(&dnat_map, &orig_addr);
- if (mapped_addr != NULL) {
- memcpy(&new_addr, mapped_addr, sizeof(new_addr));
- bpf_probe_write_user(uservaddr, &new_addr,
- sizeof(new_addr));
- }
- return 0;
-}
-
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;