aya: fix bindings for PERF_EVENT_IOC_{ENABLE|DISABLE|SET_BPF}

aya/include/linux_wrapper.h

@@ -4,3 +4,8 @@
 #include <linux/if_link.h>
 #include <linux/rtnetlink.h>
 #include <asm-generic/socket.h>
+
+/* workaround the fact that bindgen can't parse the IOC macros */
+int AYA_PERF_EVENT_IOC_ENABLE = PERF_EVENT_IOC_ENABLE;
+int AYA_PERF_EVENT_IOC_DISABLE = PERF_EVENT_IOC_DISABLE;
+int AYA_PERF_EVENT_IOC_SET_BPF = PERF_EVENT_IOC_SET_BPF;

aya/src/bpf.rs

@@ -2,13 +2,17 @@ use std::{
     collections::HashMap,
     error::Error,
     fs, io,
+    os::raw::c_int,
     path::{Path, PathBuf},
 };
 
 use thiserror::Error;
 
 use crate::{
-    generated::bpf_map_type::BPF_MAP_TYPE_PERF_EVENT_ARRAY,
+    generated::{
+        bpf_map_type::BPF_MAP_TYPE_PERF_EVENT_ARRAY, AYA_PERF_EVENT_IOC_DISABLE,
+        AYA_PERF_EVENT_IOC_ENABLE, AYA_PERF_EVENT_IOC_SET_BPF,
+    },
     maps::{Map, MapError, MapLock, MapRef, MapRefMut},
     obj::{
         btf::{Btf, BtfError},
@@ -24,10 +28,9 @@ use crate::{
 
 pub(crate) const BPF_OBJ_NAME_LEN: usize = 16;
 
-/* FIXME: these are arch dependent */
-pub(crate) const PERF_EVENT_IOC_ENABLE: libc::c_ulong = 9216;
-pub(crate) const PERF_EVENT_IOC_DISABLE: libc::c_ulong = 9217;
-pub(crate) const PERF_EVENT_IOC_SET_BPF: libc::c_ulong = 1074013192;
+pub(crate) const PERF_EVENT_IOC_ENABLE: c_int = AYA_PERF_EVENT_IOC_ENABLE;
+pub(crate) const PERF_EVENT_IOC_DISABLE: c_int = AYA_PERF_EVENT_IOC_DISABLE;
+pub(crate) const PERF_EVENT_IOC_SET_BPF: c_int = AYA_PERF_EVENT_IOC_SET_BPF;
 
 pub unsafe trait Pod: Copy + 'static {}
 

aya/src/generated/linux_bindings_aarch64.rs

@@ -1519,3 +1519,6 @@ pub struct ifinfomsg {
     pub ifi_flags: ::std::os::raw::c_uint,
     pub ifi_change: ::std::os::raw::c_uint,
 }
+pub const AYA_PERF_EVENT_IOC_ENABLE: ::std::os::raw::c_int = 9216;
+pub const AYA_PERF_EVENT_IOC_DISABLE: ::std::os::raw::c_int = 9217;
+pub const AYA_PERF_EVENT_IOC_SET_BPF: ::std::os::raw::c_int = 1074013192;

aya/src/generated/linux_bindings_x86_64.rs

@@ -1518,3 +1518,6 @@ pub struct ifinfomsg {
     pub ifi_flags: ::std::os::raw::c_uint,
     pub ifi_change: ::std::os::raw::c_uint,
 }
+pub const AYA_PERF_EVENT_IOC_ENABLE: ::std::os::raw::c_int = 9216;
+pub const AYA_PERF_EVENT_IOC_DISABLE: ::std::os::raw::c_int = 9217;
+pub const AYA_PERF_EVENT_IOC_SET_BPF: ::std::os::raw::c_int = 1074013192;

aya/src/sys/mod.rs

@@ -36,7 +36,7 @@ pub(crate) enum Syscall<'a> {
     },
     PerfEventIoctl {
         fd: c_int,
-        request: c_ulong,
+        request: c_int,
         arg: c_int,
     },
 }

aya/src/sys/perf_event.rs

@@ -79,7 +79,7 @@ pub(crate) fn perf_event_open_trace_point(id: u32) -> SysResult {
     })
 }
 
-pub(crate) fn perf_event_ioctl(fd: c_int, request: c_ulong, arg: c_int) -> SysResult {
+pub(crate) fn perf_event_ioctl(fd: c_int, request: c_int, arg: c_int) -> SysResult {
     let call = Syscall::PerfEventIoctl { fd, request, arg };
     #[cfg(not(test))]
     return syscall(call);

xtask/src/codegen/aya.rs

@@ -98,6 +98,8 @@ fn codegen_bindings(opts: &Options) -> Result<(), anyhow::Error> {
         // PERF
         "PERF_FLAG_.*",
         "PERF_EVENT_.*",
+        // see linux_wrapper.h, these are to workaround the IOC macros
+        "AYA_PERF_EVENT_.*",
         // NETLINK
         "NLMSG_ALIGNTO",
         "IFLA_XDP_FD",