33 lines
1.0 KiB
Go
33 lines
1.0 KiB
Go
//go:build unix
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package agent
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import (
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"os"
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"syscall"
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"testing"
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)
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// writeTestExecutable writes content to path with exec perms while holding
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// syscall.ForkLock.RLock, so no concurrent t.Parallel() sibling can fork
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// between our OpenFile and Close. Without this, Linux ETXTBSY fires when
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// the sibling's fork child inherits our still-open write fd and the
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// subsequent exec of the file sees "text file busy" (seen on CI as
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// TestKimiBackendInvokesACPSubcommand: fork/exec ... text file busy).
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func writeTestExecutable(tb testing.TB, path string, content []byte) {
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tb.Helper()
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syscall.ForkLock.RLock()
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defer syscall.ForkLock.RUnlock()
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f, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o755)
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if err != nil {
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tb.Fatalf("write test executable %s: open: %v", path, err)
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}
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if _, err := f.Write(content); err != nil {
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_ = f.Close()
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tb.Fatalf("write test executable %s: write: %v", path, err)
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}
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if err := f.Close(); err != nil {
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tb.Fatalf("write test executable %s: close: %v", path, err)
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}
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}
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