Commit Graph

5 Commits

Author SHA1 Message Date
Allan McRae d4697bc93d Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
Joseph Myers 568035b787 Update copyright notices with scripts/update-copyrights. 2013-01-02 19:05:09 +00:00
Mike Frysinger a277af22ea split assume pipe2/dup3/sock_cloexec knobs
We can't assume sock_cloexec and pipe2 are bound together as the former
defines are found in glibc only while the latter are a combo of kernel
headers and glibc.  So if we do a runtime detection of SOCK_CLOEXEC, but
pipe2() is a stub inside of glibc, we hit a problem.  For example:

main()
{
	getgrnam("portage");
	if (!popen("ls", "r"))
		perror("popen()");
}

getgrnam() will detect that the kernel supports SOCK_CLOEXEC and then set
both __have_sock_cloexec and __have_pipe2 to true.  But if glibc was built
against older kernel headers where __NR_pipe2 does not exist, glibc will
have a ENOSYS stub for it.  So popen() will always fail as glibc assumes
pipe2() works.

While this isn't too much of an issue for some arches as they added the
functionality to the kernel at the same time, not all arches are that
lucky.

Since the code already has dedicated names for each feature, delete the
defines wiring these three features together and make each one a proper
dedicated knob.

We've been carrying this in Gentoo since glibc-2.9.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-08-18 00:35:47 -04:00
Paul Eggert 59ba27a63a Replace FSF snail mail address with URLs. 2012-02-09 23:18:22 +00:00
Ulrich Drepper 8ccf22f934 * include/rpc/clnt.h: Declare __libc_clntudp_bufcreate and
__libc_clntudp_bufcreate_internal.
	* include/sys/socket.h: Declare __have_sock_cloexec.
	* socket/Makefile (aux): Add have_sock_cloexec.
	* socket/have_sock_cloexec.c: New file.
	* sunrpc/clnt_udp.h (clntudp_bufcreate): Now a wrapper around
	__libc_clntudp_bufcreate.
	(__libc_clntudp_bufcreate): Former implementation of clntudp_bufcreate
	which takes an additional parameter.  Create socket with non-blocking
	mode and close-on-exec flag set, if wanted.
	* sunrpc/Versions: Export __libc_clntudp_bufcreate@GLIBC_PRIVATE.
	* nis/ypclnt.c (yp_bind_client_create): Use __libc_clntpudp_bufcreate
	instead of clntudp_create.  The socket has already the close-on-exec
	flag set if SOCK_CLOEXEC is defined.
2008-07-25 17:06:50 +00:00