1 /*
2 * Copyright (c) 2008-2015 Travis Geiselbrecht
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files
6 * (the "Software"), to deal in the Software without restriction,
7 * including without limitation the rights to use, copy, modify, merge,
8 * publish, distribute, sublicense, and/or sell copies of the Software,
9 * and to permit persons to whom the Software is furnished to do so,
10 * subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23 #include <lib/io.h>
24
25 #include <uapi/err.h>
26 #include <ctype.h>
27 #include <assert.h>
28
io_write(io_handle_t * io,const char * buf,size_t len)29 ssize_t io_write(io_handle_t *io, const char *buf, size_t len)
30 {
31 DEBUG_ASSERT(io->magic == IO_HANDLE_MAGIC);
32
33 if (!io->hooks->write)
34 return ERR_NOT_SUPPORTED;
35
36 return io->hooks->write(io, buf, len);
37 }
38
io_write_commit(io_handle_t * io)39 void io_write_commit(io_handle_t *io)
40 {
41 DEBUG_ASSERT(io->magic == IO_HANDLE_MAGIC);
42
43 if (io->hooks->write_commit)
44 io->hooks->write_commit(io);
45 }
46
io_lock(io_handle_t * io)47 void io_lock(io_handle_t *io)
48 {
49 DEBUG_ASSERT(io->magic == IO_HANDLE_MAGIC);
50
51 if (io->hooks->lock)
52 io->hooks->lock(io);
53 }
54
io_unlock(io_handle_t * io)55 void io_unlock(io_handle_t *io)
56 {
57 DEBUG_ASSERT(io->magic == IO_HANDLE_MAGIC);
58
59 if (io->hooks->unlock)
60 io->hooks->unlock(io);
61 }
62
io_read(io_handle_t * io,char * buf,size_t len)63 ssize_t io_read(io_handle_t *io, char *buf, size_t len)
64 {
65 DEBUG_ASSERT(io->magic == IO_HANDLE_MAGIC);
66
67 if (!io->hooks->read)
68 return ERR_NOT_SUPPORTED;
69
70 return io->hooks->read(io, buf, len);
71 }
72