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gnulib/modules/passfd
Eric Blake e55355319e passfd: speed up configure and drop unused code
Ultimately, it would be nice to provide a sendmsg and recvmsg module,
and have those provide a replacement struct msghdr and silently
convert msg_accrights into the replacement struct's msg_control, when
targeting older BSD.  But until that point in time, this is a nice
cleanup.

SCM_RIGHTS really only works on Unix sockets; however, there is
nothing in passfd.c that needs to be hard-coded to this (rather,
the hard-coding of the address family is done externally when
the socket or socketpair is created).

* m4/afunix.m4 (gl_SOCKET_AFUNIX): Rename...
* m4/passfd.m4 (gl_PASSFD): ...to something more fitting of
its use.  Drop test for setting unused HAVE_UNIXSOCKET_SCM_RIGHTS.
Instead of probing at configure for unix_scm_rights_bsd44_way,
instead probe for CMSG_FIRSTHDR at compile time.  Simplify BSD 4.3
check to a struct member probe.
* lib/passfd.c (includes): Nothing here requires <sys/un.h>.
(sendfd, recvfd): Update preprocessor checks.
* modules/passfd (Files): Reflect rename, and drop unused file.
(Depends-on): Drop unused dependency.

Signed-off-by: Eric Blake <eblake@redhat.com>
2011-04-21 14:35:52 -06:00

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Description:
Pass file descriptors along Unix domain sockets
Files:
lib/passfd.h
lib/passfd.c
m4/passfd.m4
Depends-on:
cloexec
sys_socket
socketlib
configure.ac:
gl_PASSFD
Makefile.am:
lib_SOURCES += passfd.c
Include:
"passfd.h"
Link:
$(LIBSOCKET)
License:
LGPLv2+
Maintainer:
Bastien ROUCARIÈS