/*
 * Copyright (c) 2013
 * Phillip Lougher <phillip@squashfs.org.uk>
 *
 * This work is licensed under the terms of the GNU GPL, version 2. See
 * the COPYING file in the top-level directory.
 */

#include <linux/types.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/buffer_head.h>

#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
#include "decompressor.h"
#include "squashfs.h"

/*
 * This file implements single-threaded decompression in the
 * decompressor framework
 */

struct squashfs_stream {
	void		*stream;
	struct mutex	mutex;
};

void *squashfs_decompressor_create(struct squashfs_sb_info *msblk,
						void *comp_opts)
{
	struct squashfs_stream *stream;
	int err = -ENOMEM;

	stream = kmalloc(sizeof(*stream), GFP_KERNEL);
	if (stream == NULL)
		goto out;

	stream->stream = msblk->decompressor->init(msblk, comp_opts);
	if (IS_ERR(stream->stream)) {
		err = PTR_ERR(stream->stream);
		goto out;
	}

	kfree(comp_opts);
	mutex_init(&stream->mutex);
	return stream;

out:
	kfree(stream);
	return ERR_PTR(err);
}

void squashfs_decompressor_destroy(struct squashfs_sb_info *msblk)
{
	struct squashfs_stream *stream = msblk->stream;

	if (stream) {
		msblk->decompressor->free(stream->stream);
		kfree(stream);
	}
}

int squashfs_decompress(struct squashfs_sb_info *msblk, struct buffer_head **bh,
	int b, int offset, int length, struct squashfs_page_actor *output)
{
	int res;
	struct squashfs_stream *stream = msblk->stream;

	mutex_lock(&stream->mutex);
	res = msblk->decompressor->decompress(msblk, stream->stream, bh, b,
		offset, length, output);
	mutex_unlock(&stream->mutex);

	if (res < 0)
		ERROR("%s decompression failed, data probably corrupt\n",
			msblk->decompressor->name);

	return res;
}

int squashfs_max_decompressors(void)
{
	return 1;
}
t/ip6_route.h?id=0e0694ff1a7791274946b7f51bae692da0001a08'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/include/net/ip6_route.h?id=0e0694ff1a7791274946b7f51bae692da0001a08'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/net/ip6_route.h?id=0e0694ff1a7791274946b7f51bae692da0001a08'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/net/ip6_route.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=0e0694ff1a7791274946b7f51bae692da0001a08'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=0e0694ff1a7791274946b7f51bae692da0001a08'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net?id=0e0694ff1a7791274946b7f51bae692da0001a08'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/ip6_route.h?id=0e0694ff1a7791274946b7f51bae692da0001a08'>ip6_route.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='0e0694ff1a7791274946b7f51bae692da0001a08'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Mauro Carvalho Chehab &lt;mchehab@s-opensource.com&gt;</td><td class='right'>2016-12-26 14:09:28 -0200</td></tr>
<tr><th>committer</th><td>Mauro Carvalho Chehab &lt;mchehab@s-opensource.com&gt;</td><td class='right'>2016-12-26 14:09:28 -0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/ip6_route.h?id=0e0694ff1a7791274946b7f51bae692da0001a08'>0e0694ff1a7791274946b7f51bae692da0001a08</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/ip6_route.h?id=0e0694ff1a7791274946b7f51bae692da0001a08'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=0e0694ff1a7791274946b7f51bae692da0001a08'>53d28f58d793c151aa870f17d38ddec6ac01ec7a</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/ip6_route.h?id=0e0694ff1a7791274946b7f51bae692da0001a08'>include/net/ip6_route.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/ip6_route.h?id=65390ea01ce678379da32b01f39fcfac4903f256'>65390ea01ce678379da32b01f39fcfac4903f256</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/ip6_route.h?id=0e0694ff1a7791274946b7f51bae692da0001a08&amp;id2=65390ea01ce678379da32b01f39fcfac4903f256'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/ip6_route.h?id=c739c0a7c3c2472d7562b8f802cdce44d2597c8b'>c739c0a7c3c2472d7562b8f802cdce44d2597c8b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/ip6_route.h?id=0e0694ff1a7791274946b7f51bae692da0001a08&amp;id2=c739c0a7c3c2472d7562b8f802cdce44d2597c8b'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'patchwork' into v4l_for_linus</div><div class='commit-msg'>* patchwork:
  [media] s5k4ecgx: select CRC32 helper
  [media] dvb: avoid warning in dvb_net
  [media] v4l: tvp5150: Don't override output pinmuxing at stream on/off time
  [media] v4l: tvp5150: Fix comment regarding output pin muxing
  [media] v4l: tvp5150: Reset device at probe time, not in get/set format handlers
  [media] pctv452e: move buffer to heap, no mutex
  [media] media/cobalt: use pci_irq_allocate_vectors
  [media] cec: fix race between configuring and unconfiguring
  [media] cec: move cec_report_phys_addr into cec_config_thread_func
  [media] cec: replace cec_report_features by cec_fill_msg_report_features
  [media] cec: update log_addr[] before finishing configuration
  [media] cec: CEC_MSG_GIVE_FEATURES should abort for CEC version &lt; 2
  [media] cec: when canceling a message, don't overwrite old status info
  [media] cec: fix report_current_latency
  [media] smiapp: Make suspend and resume functions __maybe_unused
  [media] smiapp: Implement power-on and power-off sequences without runtime PM
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=0e0694ff1a7791274946b7f51bae692da0001a08'>Diffstat</a> (limited to 'include/net/ip6_route.h')</div><table summary='diffstat' class='diffstat'>