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bpfilter: switch to kernel_write

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While pipes don't really need sb_writers projection, __kernel_write is an
interface better kept private, and the additional rw_verify_area does not
hurt here.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2020-05-13 08:46:58 +02:00
parent 13c164b1a1
commit 6955a76fbc
1 changed files with 1 additions and 1 deletions
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2
net/bpfilter/bpfilter_kern.c
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@ -50,7 +50,7 @@ static int __bpfilter_process_sockopt(struct sock *sk, int optname,
req.len = optlen; req.len = optlen;
if (!bpfilter_ops.info.pid) if (!bpfilter_ops.info.pid)
goto out; goto out;
n = __kernel_write(bpfilter_ops.info.pipe_to_umh, &req, sizeof(req), n = kernel_write(bpfilter_ops.info.pipe_to_umh, &req, sizeof(req),
&pos); &pos);
if (n != sizeof(req)) { if (n != sizeof(req)) {
pr_err("write fail %zd\n", n); pr_err("write fail %zd\n", n);