Clearly split the code between `.maps`, `maps` and data maps (bss, data,
rodata). Sprinkle comments.
Remove MapKind which was effectively only needed since we used to have
one variant - BpfSectionKind::Data - to represent all data maps. Instead
add explicit BpfSectionKind::{Data, Rodata, Bss} variants and match on
those when we initialize maps.
Include all new map types which were included in the last libbpf update
(5d13fd5aca).
Fixes: cb28533e2f ("aya-obj: Update `BPF_MAP_TYPE_CGROUP_STORAGE` name to `BPF_MAP_TYPE_CGRP_STORAGE`")
Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>
The crate has few libstd dependencies. Since it should be platform-
independent in principle, making it no_std like the object crate would
seem reasonable.
However, the feature `error_in_core` is not yet stabilized, and the
thiserror crate currently offers no no_std support. When the feature
no_std is selected, we enable the `error_in_core` feature, switch to
thiserror-core and replace the HashMap with the one in hashbrown.
To split the crate into two, several changes were made:
1. Most `pub(crate)` are now `pub` to allow access from Aya;
2. Parts of BpfError are merged into, for example, RelocationError;
3. BTF part of Features is moved into the new crate;
4. `#![deny(missing_docs)]` is removed temporarily;
5. Some other code gets moved into the new crate, mainly:
- aya::{bpf_map_def, BtfMapDef, PinningType},
- aya::programs::{CgroupSock*AttachType},
The new crate is currenly allowing missing_docs. Member visibility
will be adjusted later to minimize exposure of implementation details.
Refs: #473
Alessandro Decina
Michal Rostecki
Shenghui Ye