/*
 * uncompress.c
 *
 * (C) Copyright 1999 Linus Torvalds
 *
 * cramfs interfaces to the uncompression library. There's really just
 * three entrypoints:
 *
 *  - cramfs_uncompress_init() - called to initialize the thing.
 *  - cramfs_uncompress_exit() - tell me when you're done
 *  - cramfs_uncompress_block() - uncompress a block.
 *
 * NOTE NOTE NOTE! The uncompression is entirely single-threaded. We
 * only have one stream, and we'll initialize it only once even if it
 * then is used by multiple filesystems.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/vmalloc.h>
#include <linux/zlib.h>
#include "internal.h"

static z_stream stream;
static int initialized;

/* Returns length of decompressed data. */
int cramfs_uncompress_block(void *dst, int dstlen, void *src, int srclen)
{
	int err;

	stream.next_in = src;
	stream.avail_in = srclen;

	stream.next_out = dst;
	stream.avail_out = dstlen;

	err = zlib_inflateReset(&stream);
	if (err != Z_OK) {
		pr_err("zlib_inflateReset error %d\n", err);
		zlib_inflateEnd(&stream);
		zlib_inflateInit(&stream);
	}

	err = zlib_inflate(&stream, Z_FINISH);
	if (err != Z_STREAM_END)
		goto err;
	return stream.total_out;

err:
	pr_err("Error %d while decompressing!\n", err);
	pr_err("%p(%d)->%p(%d)\n", src, srclen, dst, dstlen);
	return -EIO;
}

int cramfs_uncompress_init(void)
{
	if (!initialized++) {
		stream.workspace = vmalloc(zlib_inflate_workspacesize());
		if (!stream.workspace) {
			initialized = 0;
			return -ENOMEM;
		}
		stream.next_in = NULL;
		stream.avail_in = 0;
		zlib_inflateInit(&stream);
	}
	return 0;
}

void cramfs_uncompress_exit(void)
{
	if (!--initialized) {
		zlib_inflateEnd(&stream);
		vfree(stream.workspace);
	}
}
 href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/ptrace?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/tools/testing/selftests/ptrace?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/ptrace?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/ptrace?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/ptrace'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>testing</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>selftests</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/ptrace?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>ptrace</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='040587af31228d82c52267f717c9fcdb65f36335'/><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>Simon Horman &lt;simon.horman@netronome.com&gt;</td><td class='right'>2017-01-30 16:19:02 +0100</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 16:42:09 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/ptrace?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>040587af31228d82c52267f717c9fcdb65f36335</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/testing/selftests/ptrace?id=040587af31228d82c52267f717c9fcdb65f36335'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>b681c1594f967396fcf3ce80f17444183bb37900</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/testing/selftests/ptrace?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>tools/testing/selftests/ptrace</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/ptrace?h=nds-private-remove&amp;id=0d29ed28da63dd893395c343c7e78b078de93ceb'>0d29ed28da63dd893395c343c7e78b078de93ceb</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/ptrace?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335&amp;id2=0d29ed28da63dd893395c343c7e78b078de93ceb'>diff</a>)</td></tr></table>
<div class='commit-subject'>net/sched: cls_flower: Correct matching on ICMPv6 code</div><div class='commit-msg'>When matching on the ICMPv6 code ICMPV6_CODE rather than
ICMPV4_CODE attributes should be used.

This corrects what appears to be a typo.

Sample usage:

tc qdisc add dev eth0 ingress
tc filter add dev eth0 protocol ipv6 parent ffff: flower \
	indev eth0 ip_proto icmpv6 type 128 code 0 action drop

Without this change the code parameter above is effectively ignored.

Fixes: 7b684884fbfa ("net/sched: cls_flower: Support matching on ICMP type and code")
Signed-off-by: Simon Horman &lt;simon.horman@netronome.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=040587af31228d82c52267f717c9fcdb65f36335'>Diffstat</a> (limited to 'tools/testing/selftests/ptrace')</div><table summary='diffstat' class='diffstat'>