blob: 5c29a6e7731a791b79a9754e6a7cac6eb214b1b7 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/*
* libraw1394 - library for raw access to the 1394 bus with the Linux subsystem.
*
* Copyright (C) 1999,2000 Andreas Bombe
*
* This library is licensed under the GNU Lesser General Public License (LGPL),
* version 2.1 or later. See the file COPYING.LIB in the distribution for
* details.
*/
#include <config.h>
#include <errno.h>
#include <unistd.h>
#include "raw1394.h"
#include "kernel-raw1394.h"
#include "raw1394_private.h"
static int do_fcp_listen(struct raw1394_handle *handle, int startstop)
{
struct sync_cb_data sd = { 0, 0 };
struct raw1394_reqhandle rh = { (req_callback_t)_raw1394_sync_cb, &sd };
int err;
struct raw1394_request *req = &handle->req;
CLEAR_REQ(req);
req->type = RAW1394_REQ_FCP_LISTEN;
req->generation = handle->generation;
req->misc = startstop;
req->tag = ptr2int(&rh);
req->recvb = ptr2int(handle->buffer);
req->length = 512;
err = write(handle->fd, req, sizeof(*req));
while (!sd.done) {
if (err < 0) return err;
err = raw1394_loop_iterate(handle);
}
switch (sd.errcode) {
case RAW1394_ERROR_ALREADY:
errno = EALREADY;
return -1;
case RAW1394_ERROR_INVALID_ARG:
errno = EINVAL;
return -1;
default:
errno = 0;
return sd.errcode;
}
}
int raw1394_start_fcp_listen(struct raw1394_handle *handle)
{
return do_fcp_listen(handle, 1);
}
int raw1394_stop_fcp_listen(struct raw1394_handle *handle)
{
return do_fcp_listen(handle, 0);
}
|
