From f2bea4da2e65b5d91a23a01fb2062bcec33974aa Mon Sep 17 00:00:00 2001 From: Zack Weinberg Date: Wed, 13 Jul 2016 15:20:29 -0400 Subject: Installed-header hygiene (BZ#20366): conditionally defined structures. Several network-related structures are defined conditionally under __USE_MISC, but unconditionally used by other headers. The path of least resistance is usually to condition the uses on __USE_MISC as well. * sysdeps/mach/hurd/net/if_ppp.h * sysdeps/unix/sysv/linux/net/if_ppp.h: Only define struct ifpppstatsreq and struct ifpppcstatsreq if __USE_MISC is defined, to ensure struct ifreq is declared. * inet/netinet/ether.h: Condition all function prototypes on __USE_MISC, to ensure struct ether_addr is declared. sys/socket.h defines struct osockaddr only under __USE_MISC, whereas protocols/talkd.h requires it unconditionally. Here it doesn't make sense to condition the entire body of protocols/talkd.h on __USE_MISC. Rather than complicate sys/socket.h with a __need macro or duplicate the definition, I am introducing a new concept: tiny headers named bits/types/TYPE.h that define TYPE and nothing else. This can, I hope, ultimately replace *all* the __need macros. The guard macro for such headers will be __TYPE_defined, just in case application or third-party library code is looking at them. * socket/bits/types/struct_osockaddr.h: New header. * include/bits/types/struct_osockaddr.h: New wrapper. * socket/Makefile: Install the new header. * socket/sys/socket.h, inet/protocols/talkd.h: Refer to bits/types/struct_osockaddr.h for the definition of struct osockaddr. --- socket/Makefile | 3 ++- socket/bits/types/struct_osockaddr.h | 12 ++++++++++++ socket/sys/socket.h | 8 +------- 3 files changed, 15 insertions(+), 8 deletions(-) create mode 100644 socket/bits/types/struct_osockaddr.h (limited to 'socket') diff --git a/socket/Makefile b/socket/Makefile index 92450e8522..6be5ec78f7 100644 --- a/socket/Makefile +++ b/socket/Makefile @@ -23,7 +23,8 @@ subdir := socket include ../Makeconfig headers := sys/socket.h sys/un.h bits/sockaddr.h bits/socket.h \ - bits/socket2.h sys/socketvar.h net/if.h + bits/socket2.h bits/types/struct_osockaddr.h \ + sys/socketvar.h net/if.h routines := accept bind connect getpeername getsockname getsockopt \ listen recv recvfrom recvmsg send sendmsg sendto \ diff --git a/socket/bits/types/struct_osockaddr.h b/socket/bits/types/struct_osockaddr.h new file mode 100644 index 0000000000..e0bf59d383 --- /dev/null +++ b/socket/bits/types/struct_osockaddr.h @@ -0,0 +1,12 @@ +#ifndef __osockaddr_defined +#define __osockaddr_defined 1 + +/* This is the 4.3 BSD `struct sockaddr' format, which is used as wire + format in the grotty old 4.3 `talk' protocol. */ +struct osockaddr +{ + unsigned short int sa_family; + unsigned char sa_data[14]; +}; + +#endif diff --git a/socket/sys/socket.h b/socket/sys/socket.h index c9f0f5080d..5be1b91a93 100644 --- a/socket/sys/socket.h +++ b/socket/sys/socket.h @@ -38,13 +38,7 @@ __BEGIN_DECLS #include #ifdef __USE_MISC -/* This is the 4.3 BSD `struct sockaddr' format, which is used as wire - format in the grotty old 4.3 `talk' protocol. */ -struct osockaddr - { - unsigned short int sa_family; - unsigned char sa_data[14]; - }; +# include #endif /* The following constants should be used for the second parameter of -- cgit 1.4.1