Robert Watson d0e723a10c 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
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dup	Introduce a new F_DUP2FD command to fcntl(2), for compatibility with	2008-03-08 22:02:21 +00:00
flock	Re-implement the client side of rpc.lockd in the kernel. This implementation	2008-06-26 10:21:54 +00:00
ftruncate
newfileops_on_fork	Add a regresion test to determine whether or not a file descriptor is	2009-02-11 13:44:27 +00:00