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Merge pull request #1076 from cmorty/pull/serialdump

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Make EINVAL handling more robust and revert binary
This commit is contained in:
Simon Duquennoy 2015-08-28 23:54:43 +02:00
parent 7d8940f380 e38bc3bdcd
commit cc3bcbefd4
2 changed files with 12 additions and 4 deletions
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BIN
tools/sky/serialdump-linux
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16
tools/sky/serialdump.c
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@ -164,13 +164,21 @@ main(int argc, char **argv)
} }
fprintf(stderr, "connecting to %s (%s)", device, speedname); fprintf(stderr, "connecting to %s (%s)", device, speedname);
#ifdef O_SYNC
#ifndef O_SYNC
#define O_SYNC 0
#endif
#ifdef O_DIRECT
fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_DIRECT | O_SYNC); fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_DIRECT | O_SYNC);
if(fd < 0 && errno == EINVAL){ // O_SYNC not supported (e.g. raspberian) /* Some systems do not support certain parameters (e.g. raspbian)
fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_DIRECT); * Just do some random testing. Not sure whether there is a better way
* of doing this. */
if(fd < 0 && errno == EINVAL){
fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_SYNC);
} }
#else #else
fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_SYNC ); fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_SYNC);
#endif #endif
if(fd < 0) { if(fd < 0) {
fprintf(stderr, "\n"); fprintf(stderr, "\n");