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Chip 1998 February
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tread.c
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C/C++ Source or Header
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1997-09-17
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702b
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39 lines
#include "miscfn.h"
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include "tread.h"
int timedRead(int fd, void * bufptr, int length) {
int bytesRead;
int total = 0;
char * buf = bufptr;
fd_set readSet;
struct timeval tv;
while (total < length) {
FD_ZERO(&readSet);
FD_SET(fd, &readSet);
tv.tv_sec = 5; /* FIXME: this should be configurable */
tv.tv_usec = 0;
if (select(fd + 1, &readSet, NULL, NULL, &tv) != 1)
return total;
bytesRead = read(fd, buf + total, length - total);
if (bytesRead < 0)
return bytesRead;
else if (bytesRead == 0)
return total;
total += bytesRead;
}
return length;
}