On Fri, 21 May 1999, Bruce Evans wrote: > >> How do you guarantuee that the errno is positive? Add an assert > >> somewhere, like checking whether ENXIO >= PRIORITY_FAIL? > > > >They just are positive and have always been positive :-) > > > >Changing that (making errnos negative) would break so much code I don't > >even want to think about it. > > >From errno.h: > > #ifdef KERNEL > /* pseudo-errors returned inside kernel to modify return to process */ > #define ERESTART (-1) /* restart syscall */ > #define EJUSTRETURN (-2) /* don't modify regs, just > return */ > #define ENOIOCTL (-3) /* ioctl not handled by this > layer */ > #endif
They aren't real errnos, just signals to the kernel. -- Doug Rabson Mail: d...@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message
