1
/* Utility functions for decompression helpers
3
* Copyright (c) 2009 Hans de Goede <hdegoede@redhat.com>
5
* Redistribution and use in source and binary forms, with or without
6
* modification, are permitted provided that the following conditions
8
* 1. Redistributions of source code must retain the above copyright
9
* notice, this list of conditions and the following disclaimer.
10
* 2. Redistributions in binary form must reproduce the above copyright
11
* notice, this list of conditions and the following disclaimer in the
12
* documentation and/or other materials provided with the distribution.
14
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33
static int v4lconvert_helper_write(int fd, const void *b, size_t count,
36
const unsigned char *buf = b;
37
size_t ret, written = 0;
39
while (written < count) {
40
ret = write(fd, buf + written, count - written);
45
if (errno == EPIPE) /* Main program has quited */
48
fprintf(stderr, "%s: error writing: %s\n", progname, strerror(errno));
57
static int v4lconvert_helper_read(int fd, void *b, size_t count,
60
unsigned char *buf = b;
64
ret = read(fd, buf + r, count - r);
69
fprintf(stderr, "%s: error reading: %s\n", progname, strerror(errno));
72
if (ret == 0) /* EOF */