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Compilation: write CACHEDIR.TAG

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Write a CACHEDIR.TAG file in the global and local cache directories.
See #8210 for context and #14875 for a previous attempt.

Co-authored-by: Manlio Perillo <manlio.perillo@gmail.com>
This commit is contained in:
Kevin Boulain 2025-06-08 17:18:19 +02:00
parent 93957de6f4
commit 310625e290
1 changed files with 26 additions and 0 deletions
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26
src/Compilation.zig
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@ -1415,6 +1415,7 @@ pub const MiscTask = enum {
analyze_mod,
docs_copy,
docs_wasm,
cachedir_tag,
@"musl crt1.o",
@"musl rcrt1.o",
@ -4601,6 +4602,8 @@ fn performAllTheWork(
comp.link_prog_node.increaseEstimatedTotalItems(comp.link_task_queue.queued_prelink.items.len);
comp.link_task_queue.start(comp);
comp.thread_pool.spawnWg(&work_queue_wait_group, workerTagCacheDirs, .{comp});
if (comp.emit_docs != null) {
dev.check(.docs_emit);
comp.thread_pool.spawnWg(&work_queue_wait_group, workerDocsCopy, .{comp});
@ -5493,6 +5496,29 @@ fn workerDocsWasmFallible(comp: *Compilation, prog_node: std.Progress.Node) SubU
};
}
fn workerTagCacheDirs(comp: *Compilation) void {
for (&[_]Cache.Directory{ comp.dirs.global_cache, comp.dirs.local_cache }) |dir| {
tagCacheDir(dir.handle) catch |err| {
return comp.lockAndSetMiscFailure(
.cachedir_tag,
"unable to create CACHEDIR.TAG file in '{f}': {s}",
.{ dir, @errorName(err) },
);
};
}
}
fn tagCacheDir(dir: fs.Dir) !void {
const file = try dir.createFile("CACHEDIR.TAG", .{});
defer file.close();
try file.writeAll(
\\Signature: 8a477f597d28d172789f06886806bc55
\\# This file is a cache directory tag created by Zig.
\\# For information about cache directory tags, see: http://www.brynosaurus.com/cachedir/
\\
);
}
fn workerUpdateFile(
tid: usize,
comp: *Compilation,