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Helper function bpf_probe_read

v4.1

Definition

Copyright (c) 2015 The Libbpf Authors. All rights reserved.

For tracing programs, safely attempt to read size bytes from kernel space address unsafe_ptr and store the data in dst.

Generally, use bpf_probe_read_user() or bpf_probe_read_kernel() instead.

Returns

0 on success, or a negative error in case of failure.

static long (* const bpf_probe_read)(void *dst, __u32 size, const void *unsafe_ptr) = (void *) 4;

Usage

Docs could be improved

This part of the docs is incomplete, contributions are very welcome

Program types

This helper call can be used in the following program types:

Example

Docs could be improved

This part of the docs is incomplete, contributions are very welcome