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https://github.com/HeyPuter/gex.git
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velzie
1c3979e9ec
Each builds its program from fixtures/native, runs it and checks the output itself (lib/native.mjs: a musl cross gcc, gexc, and the page's shim through lib/guest.mjs). Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_e0aa53aa95eb4b86910519b4d14812a5 (cherry picked from commit 2cb63262b60e265c94881813f164627631ea2fd0)
39 lines
2.0 KiB
JavaScript
39 lines
2.0 KiB
JavaScript
// A vfork child may spawn (posix_spawn, CLONE_VM | CLONE_VFORK), natively and
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// on the page's shim: Qt's startDetached does, and KDE starts its services
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// so. With gexcc (GEXCC), a wasm32 program's page leg too.
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import { native, trim, tail } from '../lib/native.mjs';
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import { gexcc } from '../lib/gexcc.mjs';
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export const meta = { hosts: ['node'], arches: ['a64'], timeout: 600 };
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// exit 102: posix_spawn's ENOENT (100 + 2); 2: ENOENT from the memory the
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// grandchild shared
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const want = [
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'spawn: exited 0', 'grandchild ran', 'spawn missing: exited 102',
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'fork: exited 0', 'grandchild ran',
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'shared: exited 0', 'grandchild ran', 'shared missing: exited 2'];
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export default async function (t) {
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const n = native(t);
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const c = gexcc(t);
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const seed = n.seed();
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const d = n.dir('vfork-spawn');
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await n.cc(['-O1', '-static', '-o', `${d}/spawn`, n.src('vfork-spawn/spawn.c')]);
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// Its own root: the grandchild execs /proc/self/exe, a guest path. The
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// pipe cases alone: `gexc run` copies a CLONE_VM | CLONE_VFORK child as a
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// fork, so what the grandchild writes before it exits never reaches its
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// parent (and the parent then waits on the pipe for a grandchild that
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// never ran).
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const r = await n.gexc(['run', '--sysroot', d, `${d}/spawn`, 'pipe'], { timeout: 120000 });
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t.eq('native', trim(r.stdout), want.slice(0, 5).join('\n'), tail(r.stderr));
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const p = await n.g.run(seed, `${d}/spawn`, [], { files: { [`${d}/spawn`]: `${d}/spawn` }, cwd: d, env: { GEX_SHARED: '1' } });
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t.eq('page', p.guest, want.join('\n'), tail(p.stderr));
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// No fork: a wasm32 program's fork maps memory, which a vfork child may not.
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const s32 = `${c.dir('vfork-spawn')}/spawn32`;
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await c.build(['-O1', '-o', s32, n.src('vfork-spawn/spawn.c')]);
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const w = await n.g.run(seed, s32, ['nofork'], { files: { [s32]: s32 }, cwd: d, env: { GEX_SHARED: '1' } });
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t.eq('page, wasm32', w.guest, want.filter((l, i) => i !== 3 && i !== 4).join('\n'), tail(w.stderr));
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c.clean();
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n.clean();
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}
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