Date: Sun, 30 Dec 2001 12:29:38 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Sheldon Hearn <sheldonh@starjuice.net> Cc: Michal Mertl <mime@traveller.cz>, current@FreeBSD.ORG, bmilekic@FreeBSD.ORG Subject: Re: ntfs and sendfile problem (corrupted data) Message-ID: <200112302029.fBUKTcR16908@apollo.backplane.com> References: <91552.1009724501@axl.seasidesoftware.co.za>
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Oops, sorry, that patch was for smbfs on -stable. Not -current.
ntfs has a similar problem. It implements VOP_BMAP but fakes it,
and ntfs_read() doesn't *USE* the buffer cache, so again sendfile()
believes that a UIO_NOCOPY read will work when it won't. And, again
there is no coherency. This is even worse then what smbfs() does.
I think the solution for ntfs is the same as for smbfs... create a
vop_createvobject tag that does not set VOBJBUF and, as with smbfs,
this will cause mmap() to fail.
-Matt
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