freebsd-nq/tools/regression/file/newfileops_on_fork/Makefile

# $FreeBSD$

PROG=	newfileops_on_fork
NO_MAN=
WARNS?=	6
LDFLAGS=	-lpthread

.include <bsd.prog.mk>
Add a regresion test to determine whether or not a file descriptor is allocated in a fork(2)-inheritable way at the beginning or end of an accept(2) system call. This test creates a test thread and blocks it in accept(2), then forks a child process which tests to see if the next available file descriptor is defined or not (EBADF vs EINVAL for ftruncate(2)). This detects a regression introduced during the network stack locking work, in which a very narrow race during which fork(2) from one thread during accept(2) in a second thread lead to an extra inherited file descriptor turned into a very wide race ensuring that a descriptor was leaked into the child even though it hadn't been returned. PR: kern/130348 2009-02-11 13:44:27 +00:00			`# $FreeBSD$`

			`PROG= newfileops_on_fork`
			`NO_MAN=`
			`WARNS?= 6`
			`LDFLAGS= -lpthread`

			`.include <bsd.prog.mk>`