fuse: verify write return
commit5.4-rM2-2.2.x-imx-squashed8aab336b14
upstream. Make sure filesystem is not returning a bogus number of bytes written. Fixes:ea9b9907b8
("fuse: implement perform_write") Cc: <stable@vger.kernel.org> # v2.6.26 Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ba916a1310
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8aa5c23ef8
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@ -1098,6 +1098,8 @@ static ssize_t fuse_send_write_pages(struct fuse_io_args *ia,
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ia->write.in.flags = fuse_write_flags(iocb);
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err = fuse_simple_request(fc, &ap->args);
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if (!err && ia->write.out.size > count)
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err = -EIO;
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offset = ap->descs[0].offset;
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count = ia->write.out.size;
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