| 1 | /*
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| 2 | * Copyright (c) 2010 Lenka Trochtova
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup libdrv
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #include <ipc/ipc.h>
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| 36 | #include <async.h>
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| 37 | #include <errno.h>
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| 38 |
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| 39 | #include "ioctl.h"
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| 40 | #include "driver.h"
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| 41 |
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| 42 | static void remote_ioctl(device_t *dev, void *iface, ipc_callid_t callid, ipc_call_t *call);
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| 43 |
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| 44 | /** Remote ioctl interface operations.
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| 45 | */
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| 46 | static remote_iface_func_ptr_t remote_ioctl_iface_ops [] = {
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| 47 | &remote_ioctl
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| 48 | };
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| 49 |
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| 50 | /** Remote ioctl interface structure.
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| 51 | * Interface for processing request from remote clients addressed to the ioctl interface.
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| 52 | */
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| 53 | remote_iface_t remote_char_iface = {
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| 54 | .method_count = sizeof(remote_ioctl_iface_ops) / sizeof(remote_iface_func_ptr_t),
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| 55 | .methods = remote_ioctl_iface_ops
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| 56 | };
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| 57 |
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| 58 | static void remote_ioctl(device_t *dev, void *iface, ipc_callid_t callid, ipc_call_t *call)
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| 59 | {
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| 60 | ioctl_iface_t *ioctl_iface = (ioctl_iface_t *)iface;
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| 61 |
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| 62 | ipc_callid_t cidin, cidout;
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| 63 | int ctlcode;
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| 64 | size_t inlen = 0, outlen = 0, retlen = 0;
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| 65 | void *inbuf, *outbuf;
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| 66 | int ret;
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| 67 |
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| 68 |
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| 69 | if (!async_data_read_receive(&cidin, &inlen)) {
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| 70 | // TODO handle protocol error
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| 71 | ipc_answer_0(callid, EINVAL);
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| 72 | return;
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| 73 | }
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| 74 |
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| 75 | if (!async_data_write_receive(&cidout, &outlen)) {
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| 76 | // TODO handle protocol error
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| 77 | ipc_answer_0(callid, EINVAL);
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| 78 | return;
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| 79 | }
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| 80 |
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| 81 | if (NULL == ioctl_iface->ioctl) {
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| 82 | async_data_read_finalize(cidin, NULL, 0);
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| 83 | async_data_write_finalize(cidout, NULL, 0);
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| 84 | ipc_answer_0(callid, ENOTSUP);
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| 85 | return;
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| 86 | }
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| 87 |
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| 88 | inbuf = malloc(inlen);
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| 89 | if (NULL == inbuf) {
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| 90 | async_data_read_finalize(cidin, NULL, 0);
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| 91 | async_data_write_finalize(cidout, NULL, 0);
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| 92 | ipc_answer_0(callid, ENOMEM);
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| 93 | return;
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| 94 | }
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| 95 |
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| 96 | outbuf = malloc(outlen);
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| 97 | if (NULL == outbuf) {
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| 98 | free(inbuf);
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| 99 | async_data_read_finalize(cidin, NULL, 0);
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| 100 | async_data_write_finalize(cidout, NULL, 0);
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| 101 | ipc_answer_0(callid, ENOMEM);
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| 102 | }
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| 103 |
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| 104 | ctlcode = (int)IPC_GET_ARG1(*call);
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| 105 |
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| 106 | async_data_read_finalize(cidin, inbuf, inlen);
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| 107 | ret = (*ioctl_iface->ioctl)(dev, ctlcode, inbuf, inlen, outbuf, outlen, &retlen);
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| 108 | async_data_write_finalize(cidout, outbuf, retlen);
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| 109 | ipc_answer_1(callid, ret, retlen);
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| 110 | free(outbuf);
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| 111 | free(inbuf);
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| 112 | }
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| 113 |
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| 114 | /**
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| 115 | * @}
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| 116 | */ |
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