Daniel Samson
d63a008148
fat was one binary doing four jobs; the three that are not FAT-specific move to library/kernel/file-system-harness, a Server(comptime Engine) generic over the engine type: the badge-scoped open-node table, the nine vfs handlers, the not-mounted politeness, the exit sweep, mount registration, and durable-on- close. A filesystem is now an engine plus a main that hands the harness a mounted volume; a second engine reuses the harness wholesale. Placement note: the plan said library/file-system, but the harness is a specialization of `service` (its sibling) and needs nothing from the device domain, so it lives beside service in library/kernel and stays block-free — durability rides a caller closure (Volume.flush), no backwards kernel->device dependency, no new-domain scaffolding. The engine type is inferred from resolve()'s return, so engine.zig is untouched (its Node stays module-scope). fat keeps only its FAT-specific bring-up (acquireVolume, DMA, engine.mount, the attach/detach round trip) and the three mount prefixes as data. Behavior- neutral: 13/13 across the fat/vfs/logger/IOMMU surface, nothing observable changed. This lands first so every later phase touches the harness once.
35 lines
1.3 KiB
Zig
35 lines
1.3 KiB
Zig
//! The fat service as a binary package (docs/build-packages-plan.md):
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//! this file names the binary and EXACTLY the modules its source imports —
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//! build-support resolves each name from the domains this zon declares.
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const std = @import("std");
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const build_support = @import("build-support");
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pub fn build(b: *std.Build) void {
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const exe = build_support.userBinary(b, .{
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.name = "fat",
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.root_source_file = b.path("fat.zig"),
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.imports = &.{
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"block", "channel", "device-manager-protocol",
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"driver", "envelope", "file-system-harness",
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"ipc", "logging", "memory",
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},
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});
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b.installArtifact(exe);
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// Standalone `zig build test`; the root aggregate depends on this step.
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const test_step = b.step("test", "Run the fat unit tests");
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for ([_][]const u8{
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"on-disk.zig", // FAT on-disk struct sizes + type detection
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"engine.zig", // FAT read/write over a RAM-backed image
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}) |test_root| {
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const unit_tests = b.addTest(.{
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.root_module = b.createModule(.{
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.root_source_file = b.path(test_root),
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.target = b.resolveTargetQuery(.{}),
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}),
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});
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test_step.dependOn(&b.addRunArtifact(unit_tests).step);
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}
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}
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