Date: Sun, 16 Dec 2001 12:17:05 -0700 From: Brad Huntting <huntting@hunkular.glarp.com> To: Bruce M Simpson <bms@spc.org> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: closeing files in detach() Message-ID: <200112161917.fBGJH5u00621@hunkular.glarp.com> In-Reply-To: Your message of "Thu, 13 Dec 2001 23:24:46 GMT." <20011213232446.D17058@spc.org>
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>> There's a mention in the FBSD hacking guide that a detach() routine >> for a device driver can forcably close all open descriptors for >> its device before it unloads. >> >> How does one do this? > Check this out (from one of my USB device drivers I haven't yet > forced upon the world): > > /* nuke the vnodes for any processes attached to us. */ > vp = SLIST_FIRST(&sc->dev->si_hlist); > if (vp) > VOP_REVOKE(vp, REVOKEALL); > destroy_dev(sc->dev); > > This will cause all open fds for that device to be revoked. Er... Something is wrong here. destroy_dev() supposedly takes a dev_t which is typedef u_int32_t in <sys/types.h>. Are we using the same OS? I'm working with 4.4-RELEASE. brad To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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