Daniel Samson
f023f1cfd6
The 11 QEMU-suite fixtures lived mixed into system/services/ with their binaries bundled at /system/tests/<name>. Now the repo path is the boot path, like every real service: test/system/services/<name>. fat-test moves out of the fat server's directory into its own; display-demo stays a boot service. - kernel VFS: setInitialRamdisk derives one read-only initrd mount per top-level tree named by the ramdisk entry paths (/system, /test), registers ancestors generically with self-parented roots, and refuses backend shadowing of any initrd tree - EFI loader: the fallback walk also enumerates \test (optional — a volume without fixtures still boots); manifest and capsule unchanged - path literals: vfs-test self-open + create probe, process-test process_enumerate matches, the args-echo argv[0] expectation; the kvfs case now covers the /test root end to end - docs: DFHS /test rows, tree diagrams, loader prose, and the location convention gain the third home; fixed the input-source link 100/100 QEMU cases pass.
92 lines
3.1 KiB
Zig
92 lines
3.1 KiB
Zig
//! /test/system/services/vfs-test — a ring-3 client that proves the kernel VFS
|
|
//! end to end through the plain `file_system` API: resolve its OWN binary under
|
|
//! the kernel-served /test mount, check its metadata, read its ELF magic, and
|
|
//! list /system/services. On success it heartbeats "vfstest: ok" so the kernel
|
|
//! test can observe it; on failure it reports what went wrong.
|
|
//!
|
|
//! The "park" role (the fat-client-death test): open a file on the FAT volume,
|
|
//! then hold the handle forever without closing — the kill and the fat
|
|
//! server's release-on-death sweep are the point.
|
|
|
|
const std = @import("std");
|
|
const fs = @import("file-system");
|
|
const process = @import("process");
|
|
const time = @import("time");
|
|
const logging = @import("logging");
|
|
|
|
pub fn main(init: process.Init) void {
|
|
if (init.arguments.count > 1) {
|
|
park();
|
|
return;
|
|
}
|
|
|
|
// Our own binary, resolved through the kernel mount table.
|
|
const self_path = "/test/system/services/vfs-test";
|
|
var file = fs.open(self_path, .{}) orelse {
|
|
_ = logging.write("vfstest: open of own binary failed\n");
|
|
return;
|
|
};
|
|
defer file.close();
|
|
|
|
const attributes = file.attributes() orelse {
|
|
_ = logging.write("vfstest: attributes failed\n");
|
|
return;
|
|
};
|
|
if (attributes.kind != .regular or attributes.size == 0) {
|
|
_ = logging.write("vfstest: bad attributes\n");
|
|
return;
|
|
}
|
|
|
|
var header: [4]u8 = undefined;
|
|
const n = file.read(&header) orelse 0;
|
|
if (n != 4 or header[0] != 0x7f or header[1] != 'E' or header[2] != 'L' or header[3] != 'F') {
|
|
_ = logging.write("vfstest: ELF magic mismatch\n");
|
|
return;
|
|
}
|
|
|
|
// The write refusal: the initrd trees are read-only by construction.
|
|
if (file.write("x") != null or fs.open("/test/system/services/new-file", .{ .create = true }) != null) {
|
|
_ = logging.write("vfstest: the initrd tree accepted a write\n");
|
|
return;
|
|
}
|
|
|
|
// Listing: /system/services contains init.
|
|
var saw_init = false;
|
|
if (fs.openDirectory("/system/services")) |listing| {
|
|
var directory = listing;
|
|
defer directory.close();
|
|
var entry: fs.Entry = .{};
|
|
while (directory.next(&entry)) {
|
|
if (std.mem.eql(u8, entry.name(), "init")) saw_init = true;
|
|
}
|
|
}
|
|
if (!saw_init) {
|
|
_ = logging.write("vfstest: /system/services listing missed init\n");
|
|
return;
|
|
}
|
|
|
|
while (true) {
|
|
_ = logging.write("vfstest: ok\n");
|
|
time.sleepMillis(1000);
|
|
}
|
|
}
|
|
|
|
fn park() void {
|
|
// The storage chain (usb -> block -> fat -> mounts) takes a few seconds;
|
|
// retry until the volume appears.
|
|
var parked: ?fs.File = null;
|
|
var tries: u32 = 0;
|
|
while (parked == null and tries < 1000) : (tries += 1) {
|
|
parked = fs.open("/mnt/usb/parked", .{ .create = true });
|
|
if (parked == null) time.sleepMillis(20);
|
|
}
|
|
if (parked == null) {
|
|
_ = logging.write("vfstest: park open failed\n");
|
|
return;
|
|
}
|
|
while (true) {
|
|
_ = logging.write("vfstest: parked\n");
|
|
time.sleepMillis(500);
|
|
}
|
|
}
|