Helper function bpf_copy_from_user
Definition
Copyright (c) 2015 The Libbpf Authors. All rights reserved.
Read size bytes from user space address user_ptr and store the data in dst. This is a wrapper of copy_from_user().
Returns
0 on success, or a negative error in case of failure.
static long (* const bpf_copy_from_user)(void *dst, __u32 size, const void *user_ptr) = (void *) 148;
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_KPROBE
- BPF_PROG_TYPE_LSM
- BPF_PROG_TYPE_PERF_EVENT
- BPF_PROG_TYPE_RAW_TRACEPOINT
- BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE
- BPF_PROG_TYPE_SYSCALL
- BPF_PROG_TYPE_TRACEPOINT
- BPF_PROG_TYPE_TRACING
Example
Docs could be improved
This part of the docs is incomplete, contributions are very welcome