Zachary Miller wrote: > If write() is interrupted by a signal after it successfully writes > some data, it shall return the number of bytes written. > > consider SIGSTOP, which is non-maskable. when the process continues, wouldn't > this be a situation where the write was interrupted and thus could > legitimately > return fewer bytes?
I am going to get myself in trouble by responding from memory instead of researching and quoting W. Richard Stevens but... When reading and writing there is a concept of high speed devices and slow speed devices. As I recall high speed devices include filesystems (slow speed would be tty devices) and high speed devices as I recall cannot be interrupted. Therefore as a practical matter this could never appear when reading or writing a file on a filesystem. This could only appear when reading or writing a "slow" device such as a serial port or tty or other. Assuming I recall this correctly of course. Bob
