l?rdag 06 august 2005, 21:15, skrev Johannes Stezenbach: > Kenneth Aafl?y wrote: > > Under linux/include/linux/errno.h there is a comment about ERESTARTSYS > > and other errno values, that specifically states that those are not > > to be seen by userspace programs. > > > > However, this value is frequently returned as the return value from > > down_interruptible. This even though include/asm-i386 and some other > > include/asm-*'s say that it returns -EINTR, which makes sense, since > > the only thing that can innterupt it is a signal. > > > > Would you say that it would be okay to replace all ERESTARTSYS with > > EINTR? > > No. The VFS layer handles ERESTARTSYS and, depending on the SA_RESTART > flag (see sigaction(2)) either restarts the syscall or returns EINTR > to userspace. (The code that actually does this is in > linux/arch/i386/kernel/signal.c). I didn't know this, thanks a lot. Kenneth
