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switch keyctl_instantiate_key_common() to iov_iter

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2015-03-17 09:59:38 -04:00
parent 0504c074b5
commit b353a1f7bb
3 changed files with 39 additions and 71 deletions
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27
security/keys/compat.c
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@@ -31,30 +31,21 @@ static long compat_keyctl_instantiate_key_iov(
key_serial_t ringid)
{
struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
struct iov_iter from;
long ret;
if (!_payload_iov || !ioc)
goto no_payload;
if (!_payload_iov)
ioc = 0;
ret = compat_rw_copy_check_uvector(WRITE, _payload_iov, ioc,
ARRAY_SIZE(iovstack),
iovstack, &iov);
ret = compat_import_iovec(WRITE, _payload_iov, ioc,
ARRAY_SIZE(iovstack), &iov,
&from);
if (ret < 0)
goto err;
if (ret == 0)
goto no_payload_free;
return ret;
ret = keyctl_instantiate_key_common(id, iov, ioc, ret, ringid);
err:
if (iov != iovstack)
kfree(iov);
ret = keyctl_instantiate_key_common(id, &from, ringid);
kfree(iov);
return ret;
no_payload_free:
if (iov != iovstack)
kfree(iov);
no_payload:
return keyctl_instantiate_key_common(id, NULL, 0, 0, ringid);
}
/*