Helper function bpf_probe_read
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:
BPF_PROG_TYPE_KPROBEBPF_PROG_TYPE_LSMBPF_PROG_TYPE_PERF_EVENTBPF_PROG_TYPE_RAW_TRACEPOINTBPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLEBPF_PROG_TYPE_SYSCALLBPF_PROG_TYPE_TRACEPOINTBPF_PROG_TYPE_TRACING
Example
Docs could be improved
This part of the docs is incomplete, contributions are very welcome