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#include <unistd.h>
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#include <fcntl.h>
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#include "open.h"
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#ifndef O_NDELAY
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#define O_NDELAY 0
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#endif
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int open_trunc(const char *filename) {
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return open(filename,O_WRONLY|O_NDELAY|O_TRUNC|O_CREAT,0644);
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}
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