From: Konstantin Belousov <k...@freebsd.org> Its use is for cases where some filler is needed for cmd, or we need an indication that there were no cmd supplied, and so on.
Reviewed by: jhb Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D29935 --- newlib/libc/sys/rtems/include/sys/ioccom.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/newlib/libc/sys/rtems/include/sys/ioccom.h b/newlib/libc/sys/rtems/include/sys/ioccom.h index adaa30797..7b78db8e9 100644 --- a/newlib/libc/sys/rtems/include/sys/ioccom.h +++ b/newlib/libc/sys/rtems/include/sys/ioccom.h @@ -84,6 +84,9 @@ typedef unsigned long ioctl_command_t; #define IOCPARM_IVAL(x) ((int)(intptr_t)(void *)*(caddr_t *)(void *)(x)) #endif +#define _IOC_INVALID (_IOC_VOID|_IOC_INOUT) /* Never valid cmd value, + use as filler */ + #endif __BEGIN_DECLS -- 2.35.3 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
