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| author | Zack Weinberg <zackw@panix.com> | 2016-07-13 15:20:29 -0400 |
|---|---|---|
| committer | Zack Weinberg <zackw@panix.com> | 2016-09-23 08:43:56 -0400 |
| commit | f2bea4da2e65b5d91a23a01fb2062bcec33974aa (patch) | |
| tree | 466d8cc7eb9f7baa3a54a3aed84c12264d40bceb /socket | |
| parent | 11160cb76f56e0a711686e34881a4eaf1ad2fa0e (diff) | |
| download | glibc-f2bea4da2e65b5d91a23a01fb2062bcec33974aa.zip glibc-f2bea4da2e65b5d91a23a01fb2062bcec33974aa.tar.gz glibc-f2bea4da2e65b5d91a23a01fb2062bcec33974aa.tar.bz2 | |
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.
Diffstat (limited to 'socket')
| -rw-r--r-- | socket/Makefile | 3 | ||||
| -rw-r--r-- | socket/bits/types/struct_osockaddr.h | 12 | ||||
| -rw-r--r-- | socket/sys/socket.h | 8 |
3 files changed, 15 insertions, 8 deletions
diff --git a/socket/Makefile b/socket/Makefile index 92450e8..6be5ec7 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 0000000..e0bf59d --- /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 c9f0f50..5be1b91 100644 --- a/socket/sys/socket.h +++ b/socket/sys/socket.h @@ -38,13 +38,7 @@ __BEGIN_DECLS #include <bits/socket.h> #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 <bits/types/struct_osockaddr.h> #endif /* The following constants should be used for the second parameter of |