Helper function bpf_sysctl_get_name
Definition
Copyright (c) 2015 The Libbpf Authors. All rights reserved.
Get name of sysctl in /proc/sys/ and copy it into provided by program buffer buf of size buf_len.
The buffer is always NUL terminated, unless it's zero-sized.
If flags is zero, full name (e.g. "net/ipv4/tcp_mem") is copied. Use BPF_F_SYSCTL_BASE_NAME flag to copy base name only (e.g. "tcp_mem").
Returns
Number of character copied (not including the trailing NUL).
-E2BIG if the buffer wasn't big enough (buf will contain truncated name in this case).
static long (* const bpf_sysctl_get_name)(struct bpf_sysctl *ctx, char *buf, unsigned long buf_len, __u64 flags) = (void *) 101;
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