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Support fuse prog types

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When fuse-bpf lands in the kernel, support reading its bpf program type
from /sys/fs/fuse/bpf_prog_type_fuse and load such programs.

This is to allow development of fuse-bpf to continue, and is needed
until such time as fuse-bpf is upstreamed and this value is fixed.

Bug: 202785178
Test: Along with change to bpfprogs, prog_fuse_media_fuse_media appears
in /sys/fs/bpf

Change-Id: I83636f25b0a0c678b3ee48c6450d9c8dc157387b
This commit is contained in:
Paul Lawrence 2021-11-09 16:32:43 +00:00 • committed by Maciej Żenczykowski
commit 9548f9fbed
1 changed files with 9 additions and 2 deletions
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11
libbpf_android/Loader.cpp
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@ -28,9 +28,9 @@
#include <sys/utsname.h>
#include <unistd.h>
// This is BpfLoader v0.7
// This is BpfLoader v0.8
#define BPFLOADER_VERSION_MAJOR 0u
#define BPFLOADER_VERSION_MINOR 7u
#define BPFLOADER_VERSION_MINOR 8u
#define BPFLOADER_VERSION ((BPFLOADER_VERSION_MAJOR << 16) | BPFLOADER_VERSION_MINOR)
#include "../progs/include/bpf_map_def.h"
@ -283,6 +283,13 @@ static enum bpf_prog_type getSectionType(string& name) {
for (auto& snt : sectionNameTypes)
if (StartsWith(name, snt.name)) return snt.type;
// TODO Remove this code when fuse-bpf is upstream and this BPF_PROG_TYPE_FUSE is fixed
if (StartsWith(name, "fuse/")) {
int result = BPF_PROG_TYPE_UNSPEC;
ifstream("/sys/fs/fuse/bpf_prog_type_fuse") >> result;
return static_cast<bpf_prog_type>(result);
}
return BPF_PROG_TYPE_UNSPEC;
}