net: implement a SO_DOMAIN getsockoption
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>
diff --git a/arch/alpha/include/asm/socket.h b/arch/alpha/include/asm/socket.h
index 2f8b4d3..26773e3 100644
--- a/arch/alpha/include/asm/socket.h
+++ b/arch/alpha/include/asm/socket.h
@@ -33,6 +33,7 @@
#define SO_SNDTIMEO 0x1013
#define SO_ACCEPTCONN 0x1014
#define SO_PROTOCOL 0x1028
+#define SO_DOMAIN 0x1029
/* linux-specific, might as well be the same as on i386 */
#define SO_NO_CHECK 11
diff --git a/arch/arm/include/asm/socket.h b/arch/arm/include/asm/socket.h
index 7f47454..92ac61d 100644
--- a/arch/arm/include/asm/socket.h
+++ b/arch/arm/include/asm/socket.h
@@ -58,5 +58,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_SOCKET_H */
diff --git a/arch/avr32/include/asm/socket.h b/arch/avr32/include/asm/socket.h
index 6af2866..fe863f9 100644
--- a/arch/avr32/include/asm/socket.h
+++ b/arch/avr32/include/asm/socket.h
@@ -58,5 +58,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* __ASM_AVR32_SOCKET_H */
diff --git a/arch/cris/include/asm/socket.h b/arch/cris/include/asm/socket.h
index f3859fb..45ec49b 100644
--- a/arch/cris/include/asm/socket.h
+++ b/arch/cris/include/asm/socket.h
@@ -60,6 +60,7 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_SOCKET_H */
diff --git a/arch/frv/include/asm/socket.h b/arch/frv/include/asm/socket.h
index 8dab348..2dea726 100644
--- a/arch/frv/include/asm/socket.h
+++ b/arch/frv/include/asm/socket.h
@@ -58,6 +58,7 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_SOCKET_H */
diff --git a/arch/h8300/include/asm/socket.h b/arch/h8300/include/asm/socket.h
index ba770d0..1547f01 100644
--- a/arch/h8300/include/asm/socket.h
+++ b/arch/h8300/include/asm/socket.h
@@ -58,5 +58,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_SOCKET_H */
diff --git a/arch/ia64/include/asm/socket.h b/arch/ia64/include/asm/socket.h
index 091cd9d..0b0d5ff 100644
--- a/arch/ia64/include/asm/socket.h
+++ b/arch/ia64/include/asm/socket.h
@@ -67,5 +67,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_IA64_SOCKET_H */
diff --git a/arch/m32r/include/asm/socket.h b/arch/m32r/include/asm/socket.h
index d36f592..3390a86 100644
--- a/arch/m32r/include/asm/socket.h
+++ b/arch/m32r/include/asm/socket.h
@@ -58,5 +58,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_M32R_SOCKET_H */
diff --git a/arch/m68k/include/asm/socket.h b/arch/m68k/include/asm/socket.h
index 060cb7e..eee01cc 100644
--- a/arch/m68k/include/asm/socket.h
+++ b/arch/m68k/include/asm/socket.h
@@ -58,5 +58,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_SOCKET_H */
diff --git a/arch/microblaze/include/asm/socket.h b/arch/microblaze/include/asm/socket.h
index 96bf8bf..7361ae7 100644
--- a/arch/microblaze/include/asm/socket.h
+++ b/arch/microblaze/include/asm/socket.h
@@ -67,5 +67,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_MICROBLAZE_SOCKET_H */
diff --git a/arch/mips/include/asm/socket.h b/arch/mips/include/asm/socket.h
index 289ce5f..ae05acc 100644
--- a/arch/mips/include/asm/socket.h
+++ b/arch/mips/include/asm/socket.h
@@ -43,6 +43,7 @@
#define SO_RCVTIMEO 0x1006 /* receive timeout */
#define SO_ACCEPTCONN 0x1009
#define SO_PROTOCOL 0x1028 /* protocol type */
+#define SO_DOMAIN 0x1029 /* domain/socket family */
/* linux-specific, might as well be the same as on i386 */
#define SO_NO_CHECK 11
diff --git a/arch/mn10300/include/asm/socket.h b/arch/mn10300/include/asm/socket.h
index 19d7cf7..4df75af 100644
--- a/arch/mn10300/include/asm/socket.h
+++ b/arch/mn10300/include/asm/socket.h
@@ -58,5 +58,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_SOCKET_H */
diff --git a/arch/parisc/include/asm/socket.h b/arch/parisc/include/asm/socket.h
index a658b09..960b1e5 100644
--- a/arch/parisc/include/asm/socket.h
+++ b/arch/parisc/include/asm/socket.h
@@ -25,6 +25,7 @@
#define SO_ERROR 0x1007
#define SO_TYPE 0x1008
#define SO_PROTOCOL 0x1028
+#define SO_DOMAIN 0x1029
#define SO_PEERNAME 0x2000
#define SO_NO_CHECK 0x400b
diff --git a/arch/powerpc/include/asm/socket.h b/arch/powerpc/include/asm/socket.h
index 609049d..3ab8b3e 100644
--- a/arch/powerpc/include/asm/socket.h
+++ b/arch/powerpc/include/asm/socket.h
@@ -65,5 +65,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_POWERPC_SOCKET_H */
diff --git a/arch/s390/include/asm/socket.h b/arch/s390/include/asm/socket.h
index 65baa9a..e42df89 100644
--- a/arch/s390/include/asm/socket.h
+++ b/arch/s390/include/asm/socket.h
@@ -66,5 +66,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_SOCKET_H */
diff --git a/arch/sparc/include/asm/socket.h b/arch/sparc/include/asm/socket.h
index 9cbbfaf..3a5ae3d 100644
--- a/arch/sparc/include/asm/socket.h
+++ b/arch/sparc/include/asm/socket.h
@@ -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. */
diff --git a/arch/x86/include/asm/socket.h b/arch/x86/include/asm/socket.h
index 1077d25..b2a8c74 100644
--- a/arch/x86/include/asm/socket.h
+++ b/arch/x86/include/asm/socket.h
@@ -58,5 +58,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _ASM_X86_SOCKET_H */
diff --git a/arch/xtensa/include/asm/socket.h b/arch/xtensa/include/asm/socket.h
index e47f172..beb3a6b 100644
--- a/arch/xtensa/include/asm/socket.h
+++ b/arch/xtensa/include/asm/socket.h
@@ -69,5 +69,6 @@
#define SCM_TIMESTAMPING SO_TIMESTAMPING
#define SO_PROTOCOL 38
+#define SO_DOMAIN 39
#endif /* _XTENSA_SOCKET_H */