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51 lines
2.1 KiB
Rust
51 lines
2.1 KiB
Rust
#![no_std]
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#![warn(clippy::cast_lossless, clippy::cast_sign_loss)]
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pub use aya_log_ebpf_macros::{debug, error, info, log, trace, warn};
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#[doc(hidden)]
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pub mod macro_support {
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#[cfg(target_arch = "bpf")]
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use aya_ebpf::macros::map;
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use aya_ebpf::maps::{PerCpuArray, RingBuf};
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use aya_log_common::LogValueLength;
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pub use aya_log_common::{
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DefaultFormatter, DisplayHint, IpFormatter, Level, LowerHexFormatter, LowerMacFormatter,
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UpperHexFormatter, UpperMacFormatter, WriteToBuf, write_record_header,
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};
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const LOG_BUF_CAPACITY: LogValueLength = 8192;
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#[repr(C)]
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pub struct LogBuf {
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pub buf: [u8; LOG_BUF_CAPACITY as usize],
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}
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// This cfg_attr prevents compilation failures on macOS where the generated section name doesn't
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// meet mach-o's requirements. We wouldn't ordinarily build this crate for macOS, but we do so
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// because the integration-test crate depends on this crate transitively. See comment in
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// test/integration-test/Cargo.toml.
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#[cfg_attr(target_arch = "bpf", map)]
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pub static AYA_LOG_BUF: PerCpuArray<LogBuf> = PerCpuArray::with_max_entries(1, 0);
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// This cfg_attr prevents compilation failures on macOS where the generated section name doesn't
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// meet mach-o's requirements. We wouldn't ordinarily build this crate for macOS, but we do so
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// because the integration-test crate depends on this crate transitively. See comment in
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// test/integration-test/Cargo.toml.
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#[cfg_attr(target_arch = "bpf", map)]
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pub static AYA_LOGS: RingBuf = RingBuf::with_byte_size((LOG_BUF_CAPACITY as u32) << 4, 0);
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/// Global log level controlling which log statements are active.
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///
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/// Userspace may patch this symbol before load via `EbpfLoader::set_global`.
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#[unsafe(no_mangle)]
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pub static AYA_LOG_LEVEL: u8 = 0xff;
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/// Returns `true` if the provided level is enabled according to [`AYA_LOG_LEVEL`].
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#[inline(always)]
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pub fn level_enabled(level: Level) -> bool {
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let current_level = unsafe { core::ptr::read_volatile(&AYA_LOG_LEVEL) };
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level as u8 <= current_level
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}
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}
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