atrace: use creat instead of truncate
Change-Id: Ie25c704f33c419c0c542249ae2841393862df0ab
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@ -176,13 +176,18 @@ static bool fileIsWritable(const char* filename) {
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// Truncate a file.
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static bool truncateFile(const char* path)
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{
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int err = truncate(path, 0);
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if (err != 0) {
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// This uses creat rather than truncate because some of the debug kernel
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// device nodes (e.g. k_ftraceFilterPath) currently aren't changed by
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// calls to truncate, but they are cleared by calls to creat.
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int traceFD = creat(path, 0);
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if (traceFD == -1) {
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fprintf(stderr, "error truncating %s: %s (%d)\n", path,
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strerror(errno), errno);
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strerror(errno), errno);
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return false;
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}
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close(traceFD);
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return true;
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}
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