Messages in this thread | | | From | "Albert D. Cahalan" <> | Subject | Re: Mailbox | Date | Fri, 2 Jul 1999 22:10:41 -0400 (EDT) |
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Keith Owens writes:
> Does any implementation exist for VMS mailbox ?
Nope.
> If not, wouldn't it be a good thing to patch kernel with such IPC ?
Maybe. It ought to be fun at least. It might help with NT compatibility. If you need a file type, I've been collecting a list:
hex name ls octal description 0000 000000 BSD unknown type (not used for inode) 1000 S_IFIFO p| 010000 fifo (named pipe) 2000 S_IFCHR c 020000 character special 3000 S_IFMPC 030000 multiplexed character device (Coherent) 4000 S_IFDIR d/ 040000 directory 5000 S_IFNAM 050000 XENIX special named file 6000 S_IFBLK b 060000 block special 7000 S_IFMPB 070000 multiplexed block device (Coherent) 8000 S_IFREG - 110000 regular 9000 S_IFCMP 110000 VxFS compressed (file?) a000 S_IFLNK l@ 120000 symbolic link b000 S_IFSHAD 130000 Solaris shadow inode for ACL c000 S_IFSOCK s= 140000 socket (also "S_IFSOC" on VxFS) d000 S_IFDOOR D 150000 Solaris door e000 S_IFWHT % 160000 BSD whiteout (not used for inode) f000 S_IFMT 170000 mask (not used for inode)
I think you can steal S_IFMPC and S_IFMPB, along with either S_IFCMP or S_IFSHAD. (since S_IFCMP and S_IFSHAD seem to be internal and do not exist on the same filesystem, one can be mapped to the other)
I'd be interested in knowing more about S_IFNAM, the "available" type codes, and anything missing from the table above. People with S/390 Open Edition, NT, and OpenVMS might have interesting files.
Perhaps these values ought to go into kernel developer documentation.
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