mathiasandClaude Opus 5.5
27a01dd2af
readExcerpt, ReadNote and ReadScoped now read through brainfs (os.Root, regular files only, type checked on the opened handle), so a symlink swapped in after a check is not followed and a FIFO does not hang the reader. ReadRegularMax bounds the read itself with io.LimitReader(max+1). notes.Target carries the brain root. Refs #157. Adversarial review round 2: PASS (round 1 BLOCKED: unbounded read, rule-9 test names). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Mathias <mthbqv@gmail.com>
41 lines
1.4 KiB
Go
41 lines
1.4 KiB
Go
package notes
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import (
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/mathiasbq/hyperguild/ingestion/internal/brainfs/brainfstest"
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)
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// hyperguild#157 slice 2: ReadScoped (brain_read) Lstat-checked the final
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// component, then reopened by name with os.ReadFile: a swap after the check
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// was followed, and a FIFO blocked the read. It now reads through brainfs.
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func TestReadScopedRefusesSymlinksAndSurvivesSwapRaces(t *testing.T) {
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brain := t.TempDir()
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facts := filepath.Join(brain, "wiki", "w", "facts")
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require.NoError(t, os.MkdirAll(facts, 0o755))
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p := filepath.Join(facts, "r.md")
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read := func() string {
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b, _ := ReadScoped(brain, "wiki/w/facts/r.md", ScopeNotes)
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return string(b)
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}
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require.NoError(t, os.WriteFile(p, []byte("inside"), 0o644))
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assert.Equal(t, "inside", read())
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brainfstest.AssertNoLeak(t, p, "inside", 1500*time.Millisecond, read)
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brainfstest.AssertNoHang(t, p, "inside", 1500*time.Millisecond, 6*time.Second, func() { _ = read() })
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}
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func TestReadScopedRefusesANoteOverMaxNoteBytes(t *testing.T) {
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brain := t.TempDir()
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facts := filepath.Join(brain, "wiki", "w", "facts")
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require.NoError(t, os.MkdirAll(facts, 0o755))
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require.NoError(t, os.WriteFile(filepath.Join(facts, "big.md"), make([]byte, maxNoteBytes+1), 0o644))
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_, err := ReadScoped(brain, "wiki/w/facts/big.md", ScopeNotes)
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assert.ErrorIs(t, err, ErrTooLarge)
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}
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