Date: Fri, 12 Jun 2009 08:51:32 -0400 From: John Baldwin <jhb@freebsd.org> To: Dmitry Morozovsky <marck@rinet.ru> Cc: svn-src-stable@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, svn-src-stable-7@freebsd.org Subject: Re: svn commit: r194040 - stable/7/lib/libc/gen Message-ID: <200906120851.32846.jhb@freebsd.org> In-Reply-To: <alpine.BSF.2.00.0906121412110.31121@woozle.rinet.ru> References: <200906112137.n5BLbO2S060767@svn.freebsd.org> <alpine.BSF.2.00.0906121412110.31121@woozle.rinet.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
On Friday 12 June 2009 6:13:08 am Dmitry Morozovsky wrote: > On Thu, 11 Jun 2009, John Baldwin wrote: > > JB> Author: jhb > JB> Date: Thu Jun 11 21:37:23 2009 > JB> New Revision: 194040 > JB> URL: http://svn.freebsd.org/changeset/base/194040 > JB> > JB> Log: > JB> If the running kernel has support for shm_open() and shm_unlink() as > JB> system calls (i.e. 8.0+), then invoke the system calls instead of using > JB> open/fcntl/unlink. This is a direct commit instead of an MFC since libc > JB> in 8.0 always uses the system calls directly. > > So it could help running RELENG_7 jails under 8 host? In that case it probably doesn't matter either way. The goal is that if you have an 8.x binary and a 7.x binary that are both using shm_open() with a path to open a SHM region for IPC, they will both access the same object. If you have all 8.x binaries or all < 8.x binaries in the group that shares access to a named SHM region then that case would work regardless. -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200906120851.32846.jhb>