rust-analyzer: Enable check all targets on save

This switches off the panic_handler in ebpf code using conditional
compilation... and fixes a lot of suppressed lints.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>

.vim/coc-settings.json

@@ -1,4 +1,3 @@
 {
-  "rust-analyzer.checkOnSave.allTargets": false,
   "rust-analyzer.checkOnSave.command": "clippy"
 }

.vscode/settings.json

@@ -1,4 +1,3 @@
 {
-  "rust-analyzer.checkOnSave.allTargets": false,
   "rust-analyzer.checkOnSave.command": "clippy"
 }

Cargo.toml

@@ -6,7 +6,7 @@ members = [
     # ebpf crates
     "bpf/aya-bpf", "bpf/aya-bpf-bindings", "bpf/aya-log-ebpf", "test/integration-ebpf"
 ]
-default-members = ["aya", "aya-tool", "aya-log", "aya-bpf-macros", "aya-log-ebpf-macros"]
+default-members = ["aya", "aya-common", "aya-tool", "aya-log", "aya-bpf-macros", "aya-log-ebpf-macros"]
 
 [profile.dev]
 panic = "abort"

aya-log/src/lib.rs

@@ -480,7 +480,6 @@ mod test {
     use super::*;
     use aya_log_common::{write_record_header, WriteToBuf};
     use log::logger;
-    use testing_logger;
 
     fn new_log(args: usize) -> Result<(usize, Vec<u8>), ()> {
         let mut buf = vec![0; 8192];

aya/src/obj/mod.rs

@@ -1488,7 +1488,6 @@ mod tests {
             map_flags: 5,
             id: 0,
             pinning: PinningType::None,
-            ..Default::default()
         };
 
         assert_eq!(
@@ -1507,7 +1506,6 @@ mod tests {
             map_flags: 5,
             id: 6,
             pinning: PinningType::ByName,
-            ..Default::default()
         };
 
         assert_eq!(parse_map_def("foo", bytes_of(&def)).unwrap(), def);
@@ -1523,7 +1521,6 @@ mod tests {
             map_flags: 5,
             id: 6,
             pinning: PinningType::ByName,
-            ..Default::default()
         };
         let mut buf = [0u8; 128];
         unsafe { ptr::write_unaligned(buf.as_mut_ptr() as *mut _, def) };
@@ -1554,7 +1551,6 @@ mod tests {
                         map_flags: 5,
                         id: 0,
                         pinning: PinningType::None,
-                        ..Default::default()
                     })
                 ),
                 "foo"
@@ -2223,7 +2219,6 @@ mod tests {
                     map_flags: BPF_F_RDONLY_PROG,
                     id: 1,
                     pinning: PinningType::None,
-                    ..Default::default()
                 },
                 section_index: 1,
                 symbol_index: 1,

bpf/aya-bpf/src/programs/usdt.rs

@@ -5,7 +5,6 @@ use aya_common::{
 };
 
 use crate::{
-    args::FromPtRegs,
     helpers::{bpf_probe_read_kernel, bpf_probe_read_user},
     macros::map,
     maps::{Array, HashMap},
@@ -18,6 +17,9 @@ use crate::bindings::pt_regs;
 #[cfg(bpf_target_arch = "aarch64")]
 use crate::bindings::user_pt_regs as pt_regs;
 
+#[cfg(not(feature = "cookie"))]
+use crate::args::FromPtRegs;
+
 #[map(name = "__bpf_usdt_specs")]
 static USDT_SPECS: Array<UsdtSpec> = Array::with_max_entries(USDT_MAX_SPEC_COUNT, 0);
 
@@ -46,6 +48,7 @@ impl UsdtContext {
     }
 
     /// Access the register that holds the next instruction pointer.
+    #[cfg(not(feature = "cookie"))]
     #[inline(always)]
     fn ip<T: FromPtRegs>(&self) -> Option<T> {
         T::from_ip(unsafe { &*self.regs })
@@ -80,7 +83,7 @@ impl UsdtContext {
         if n > USDT_MAX_ARG_COUNT {
             return Err(UsdtError::MaxArgCount);
         }
-        let spec_id = self.spec_id()?;
+        let spec_id = self.spec_id().map_err(|_| UsdtError::SpecIdNotFound)?;
         let spec = USDT_SPECS.get(spec_id).ok_or(UsdtError::SpecIdNotFound)?;
 
         if n > (spec.arg_count as usize) {

test/integration-ebpf/src/map_test.rs

@@ -26,6 +26,7 @@ unsafe fn try_pass(_ctx: XdpContext) -> Result<u32, u32> {
     Ok(xdp_action::XDP_PASS)
 }
 
+#[cfg(target_arch = "bpf")]
 #[panic_handler]
 fn panic(_info: &core::panic::PanicInfo) -> ! {
     unsafe { core::hint::unreachable_unchecked() }

test/integration-ebpf/src/name_test.rs

@@ -15,6 +15,7 @@ unsafe fn try_pass(_ctx: XdpContext) -> Result<u32, u32> {
     Ok(xdp_action::XDP_PASS)
 }
 
+#[cfg(target_arch = "bpf")]
 #[panic_handler]
 fn panic(_info: &core::panic::PanicInfo) -> ! {
     unsafe { core::hint::unreachable_unchecked() }

test/integration-ebpf/src/pass.rs

@@ -15,6 +15,7 @@ unsafe fn try_pass(_ctx: XdpContext) -> Result<u32, u32> {
     Ok(xdp_action::XDP_PASS)
 }
 
+#[cfg(target_arch = "bpf")]
 #[panic_handler]
 fn panic(_info: &core::panic::PanicInfo) -> ! {
     unsafe { core::hint::unreachable_unchecked() }

test/integration-ebpf/src/test.rs

@@ -15,6 +15,7 @@ unsafe fn try_pass(_ctx: XdpContext) -> Result<u32, u32> {
     Ok(xdp_action::XDP_PASS)
 }
 
+#[cfg(target_arch = "bpf")]
 #[panic_handler]
 fn panic(_info: &core::panic::PanicInfo) -> ! {
     unsafe { core::hint::unreachable_unchecked() }