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net: implement a SO_DOMAIN getsockoption

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This sockopt goes in line with SO_TYPE and SO_PROTOCOL. It makes it
possible for userspace programs to pass around file descriptors — I
am referring to arguments-to-functions, but it may even work for the
fd passing over UNIX sockets — without needing to also pass the
auxiliary information (PF_INET6/IPPROTO_TCP).

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jan Engelhardt 2009-08-04 07:28:29 +00:00 • committed by David S. Miller
parent 49c794e946
commit 0d6038ee76
20 changed files with 24 additions and 0 deletions
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1
arch/sparc/include/asm/socket.h
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@ -30,6 +30,7 @@
#define SO_ERROR 0x1007
#define SO_TYPE 0x1008
#define SO_PROTOCOL 0x1028
#define SO_DOMAIN 0x1029
/* Linux specific, keep the same. */