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Check file modification times before strip and dump

This commit is contained in:
Michael Vines 2020-11-05 08:56:35 -08:00
parent d2b26a65e9
commit 5a435a4342
1 changed files with 26 additions and 5 deletions
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31
sdk/cargo-build-bpf/src/main.rs
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@ -179,12 +179,33 @@ fn build_bpf(config: Config) {
let program_dump = bpf_out_dir.join(&format!("{}-dump.txt", program_name));
let program_so = bpf_out_dir.join(&format!("{}.so", program_name));
spawn(
&config.bpf_sdk.join("scripts/strip.sh"),
&[&program_unstripped_so, &program_so],
);
fn file_older_or_missing(prerequisite_file: &Path, target_file: &Path) -> bool {
let prerequisite_metadata = fs::metadata(prerequisite_file).unwrap_or_else(|err| {
eprintln!(
"Unable to get file metadata for {}: {}",
prerequisite_file.display(),
err
);
exit(1);
});
if config.dump {
if let Ok(target_metadata) = fs::metadata(target_file) {
use std::time::UNIX_EPOCH;
prerequisite_metadata.modified().unwrap_or(UNIX_EPOCH)
> target_metadata.modified().unwrap_or(UNIX_EPOCH)
} else {
true
}
}
if file_older_or_missing(&program_unstripped_so, &program_so) {
spawn(
&config.bpf_sdk.join("scripts/strip.sh"),
&[&program_unstripped_so, &program_so],
);
}
if config.dump && file_older_or_missing(&program_unstripped_so, &program_dump) {
spawn(
&config.bpf_sdk.join("scripts/dump.sh"),
&[&program_unstripped_so, &program_dump],