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Fix EINVAL handling and O_DIRECT
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parent
60a301ef9f
commit
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@ -164,10 +164,18 @@ main(int argc, char **argv)
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}
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}
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fprintf(stderr, "connecting to %s (%s)", device, speedname);
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fprintf(stderr, "connecting to %s (%s)", device, speedname);
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#ifdef O_SYNC
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#ifndef O_SYNC
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#define O_SYNC 0
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#endif
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#ifdef O_DIRECT
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fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_DIRECT | O_SYNC);
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fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_DIRECT | O_SYNC);
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if(fd < 0 && errno == EINVAL){ // O_SYNC not supported (e.g. raspberian)
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// Some system do not support certain parameters (e.g. raspberian)
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fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_DIRECT);
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// Just do some random testing. Not sure wheter ther is a better way
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// of doing this.
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if(fd < 0 && errno == EINVAL){
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fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_SYNC);
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}
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}
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#else
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#else
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fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_SYNC);
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fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_SYNC);
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