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KFunc bpf_cgroup_read_xattr

v6.17

Read xattr of a cGroup's node in cGroup file system.

Definition

Get xattr name__str of cgroup and store the output in value_ptr. For security reasons, only name__str with prefix "user." is allowed.

Parameters

cgroup: cgroup to get xattr from

name__str: name of the xattr

value_p: output buffer of the xattr value

Returns

Length of the xattr value on success, a negative value on error.

Signature

int bpf_cgroup_read_xattr(struct cgroup *cgroup, const char *name__str, struct bpf_dynptr *value_p)

Usage

Docs could be improved

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

Program types

The following program types can make use of this kfunc:

Example

Docs could be improved

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