On Wed, 2018-04-11 at 17:45 -0400, Douglas Gilbert wrote: > It is a good bet that some sg based apps in the wild will be using the > old (shifted+masked) SCSI status defines. The basis of the sg_v3 interface > is 'struct sg_io_hdr' and it has two SCSI status fields: 'status' and > 'masked_status'. The latter one matches the old SCSI status defines > that you want to get rid of. I think that it is fine to get rid of > them in the kernel, but not in the user space. > > A suggestion: you create a new header called scsi_legacy.h in the > uapi/linux directory that is only included at the start of scsi.h > when __KERNEL__ is not defined. And in scsi_legacy.h prefix those old > defines with a comment like: ... please use don't use the following > defines, use the ones that start with SAM_STAT_ found in .... instead.
Hello Doug, A change I made in the include/scsi/scsi.h header file in 2015 has not yet made it into the latest glibc /usr/include/scsi/scsi.h header file. So I think we don't have to worry about backwards compatibility in the header files under include/scsi. The glibc maintainers however might appreciate it if we would introduce files under include/uapi/scsi that they can copy instead of having to maintain the glibc SCSI header files themselves. Bart.
