#include <lzma.h>
#include <stdio.h>
#include <linux/compiler.h>
#include "util.h"
#include "debug.h"

#define BUFSIZE 8192

static const char *lzma_strerror(lzma_ret ret)
{
	switch ((int) ret) {
	case LZMA_MEM_ERROR:
		return "Memory allocation failed";
	case LZMA_OPTIONS_ERROR:
		return "Unsupported decompressor flags";
	case LZMA_FORMAT_ERROR:
		return "The input is not in the .xz format";
	case LZMA_DATA_ERROR:
		return "Compressed file is corrupt";
	case LZMA_BUF_ERROR:
		return "Compressed file is truncated or otherwise corrupt";
	default:
		return "Unknown error, possibly a bug";
	}
}

int lzma_decompress_to_file(const char *input, int output_fd)
{
	lzma_action action = LZMA_RUN;
	lzma_stream strm   = LZMA_STREAM_INIT;
	lzma_ret ret;
	int err = -1;

	u8 buf_in[BUFSIZE];
	u8 buf_out[BUFSIZE];
	FILE *infile;

	infile = fopen(input, "rb");
	if (!infile) {
		pr_err("lzma: fopen failed on %s: '%s'\n",
		       input, strerror(errno));
		return -1;
	}

	ret = lzma_stream_decoder(&strm, UINT64_MAX, LZMA_CONCATENATED);
	if (ret != LZMA_OK) {
		pr_err("lzma: lzma_stream_decoder failed %s (%d)\n",
			lzma_strerror(ret), ret);
		goto err_fclose;
	}

	strm.next_in   = NULL;
	strm.avail_in  = 0;
	strm.next_out  = buf_out;
	strm.avail_out = sizeof(buf_out);

	while (1) {
		if (strm.avail_in == 0 && !feof(infile)) {
			strm.next_in  = buf_in;
			strm.avail_in = fread(buf_in, 1, sizeof(buf_in), infile);

			if (ferror(infile)) {
				pr_err("lzma: read error: %s\n", strerror(errno));
				goto err_fclose;
			}

			if (feof(infile))
				action = LZMA_FINISH;
		}

		ret = lzma_code(&strm, action);

		if (strm.avail_out == 0 || ret == LZMA_STREAM_END) {
			ssize_t write_size = sizeof(buf_out) - strm.avail_out;

			if (writen(output_fd, buf_out, write_size) != write_size) {
				pr_err("lzma: write error: %s\n", strerror(errno));
				goto err_fclose;
			}

			strm.next_out  = buf_out;
			strm.avail_out = sizeof(buf_out);
		}

		if (ret != LZMA_OK) {
			if (ret == LZMA_STREAM_END)
				break;

			pr_err("lzma: failed %s\n", lzma_strerror(ret));
			goto err_fclose;
		}
	}

	err = 0;
err_fclose:
	fclose(infile);
	return err;
}
td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/atm/protocols.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/atm?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'>atm</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/atm/protocols.h?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'>protocols.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'/><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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-16 09:34:37 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-16 09:34:37 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/atm/protocols.h?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'>2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/atm/protocols.h?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'>4d8ea8e6ca52f1938269937834641205d8d888f0</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/atm/protocols.h?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'>net/atm/protocols.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/atm/protocols.h?id=49def1853334396f948dcb4cedb9347abb318df5'>49def1853334396f948dcb4cedb9347abb318df5</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/atm/protocols.h?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc&amp;id2=49def1853334396f948dcb4cedb9347abb318df5'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/atm/protocols.h?id=ce1ca7d2d140a1f4aaffd297ac487f246963dd2f'>ce1ca7d2d140a1f4aaffd297ac487f246963dd2f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/atm/protocols.h?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc&amp;id2=ce1ca7d2d140a1f4aaffd297ac487f246963dd2f'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'nfsd-4.10-1' of git://linux-nfs.org/~bfields/linux</div><div class='commit-msg'>Pull nfsd fixes from Bruce Fields:
 "Miscellaneous nfsd bugfixes, one for a 4.10 regression, three for
  older bugs"

* tag 'nfsd-4.10-1' of git://linux-nfs.org/~bfields/linux:
  svcrdma: avoid duplicate dma unmapping during error recovery
  sunrpc: don't call sleeping functions from the notifier block callbacks
  svcrpc: don't leak contexts on PROC_DESTROY
  nfsd: fix supported attributes for acl &amp; labels
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=2eabb8b8d68bc9c7779ba8b04bec8d4f8baed0bc'>Diffstat</a> (limited to 'net/atm/protocols.h')</div><table summary='diffstat' class='diffstat'>