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added error check for mmap() call

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Frank Mori Hess 2002-11-26 20:06:22 +00:00
parent 7f188a8354
commit 28cbcb99d8
1 changed files with 4 additions and 0 deletions
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4
demo/mmap.c
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@ -54,6 +54,10 @@ int main(int argc, char *argv[])
map=mmap(NULL,size,PROT_READ,MAP_SHARED,comedi_fileno(dev),0);
fprintf(stderr,"map=%p\n",map);
if( map == MAP_FAILED ){
perror( "mmap" );
exit(1);
}
for(i=0;i<n_chan;i++){
chanlist[i]=CR_PACK(channel+i,range,aref);