/*
* collate.c - NTFS kernel collation handling. Part of the Linux-NTFS project.
*
* Copyright (c) 2004 Anton Altaparmakov
*
* This program/include file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program/include file is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (in the main directory of the Linux-NTFS
* distribution in the file COPYING); if not, write to the Free Software
* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "collate.h"
#include "debug.h"
#include "ntfs.h"
static int ntfs_collate_binary(ntfs_volume *vol,
const void *data1, const int data1_len,
const void *data2, const int data2_len)
{
int rc;
ntfs_debug("Entering.");
rc = memcmp(data1, data2, min(data1_len, data2_len));
if (!rc && (data1_len != data2_len)) {
if (data1_len < data2_len)
rc = -1;
else
rc = 1;
}
ntfs_debug("Done, returning %i", rc);
return rc;
}
static int ntfs_collate_ntofs_ulong(ntfs_volume *vol,
const void *data1, const int data1_len,
const void *data2, const int data2_len)
{
int rc;
u32 d1, d2;
ntfs_debug("Entering.");
// FIXME: We don't really want to bug here.
BUG_ON(data1_len != data2_len);
BUG_ON(data1_len != 4);
d1 = le32_to_cpup(data1);
d2 = le32_to_cpup(data2);
if (d1 < d2)
rc = -1;
else {
if (d1 == d2)
rc = 0;
else
rc = 1;
}
ntfs_debug("Done, returning %i", rc);
return rc;
}
typedef int (*ntfs_collate_func_t)(ntfs_volume *, const void *, const int,
const void *, const int);
static ntfs_collate_func_t ntfs_do_collate0x0[3] = {
ntfs_collate_binary,
NULL/*ntfs_collate_file_name*/,
NULL/*ntfs_collate_unicode_string*/,
};
static ntfs_collate_func_t ntfs_do_collate0x1[4] = {
ntfs_collate_ntofs_ulong,
NULL/*ntfs_collate_ntofs_sid*/,
NULL/*ntfs_collate_ntofs_security_hash*/,
NULL/*ntfs_collate_ntofs_ulongs*/,
};
/**
* ntfs_collate - collate two data items using a specified collation rule
* @vol: ntfs volume to which the data items belong
* @cr: collation rule to use when comparing the items
* @data1: first data item to collate
* @data1_len: length in bytes of @data1
* @data2: second data item to collate
* @data2_len: length in bytes of @data2
*
* Collate the two data items @data1 and @data2 using the collation rule @cr
* and return -1, 0, ir 1 if @data1 is found, respectively, to collate before,
* to match, or to collate after @data2.
*
* For speed we use the collation rule @cr as an index into two tables of
* function pointers to call the appropriate collation function.
*/
int ntfs_collate(ntfs_volume *vol, COLLATION_RULE cr,
const void *data1, const int data1_len,
const void *data2, const int data2_len) {
int i;
ntfs_debug("Entering.");
/*
* FIXME: At the moment we only support COLLATION_BINARY and
* COLLATION_NTOFS_ULONG, so we BUG() for everything else for now.
*/
BUG_ON(cr != COLLATION_BINARY && cr != COLLATION_NTOFS_ULONG);
i = le32_to_cpu(cr);
BUG_ON(i < 0);
if (i <= 0x02)
return ntfs_do_collate0x0[i](vol, data1, data1_len,
data2, data2_len);
BUG_ON(i < 0x10);
i -= 0x10;
if (likely(i <= 3))
return ntfs_do_collate0x1[i](vol, data1, data1_len,
data2, data2_len);
BUG();
return 0;
}
'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>Alexander Stein <alexander.stein@systec-electronic.com></td><td class='right'>2017-01-30 12:35:28 +0100</td></tr>
<tr><th>committer</th><td>Linus Walleij <linus.walleij@linaro.org></td><td class='right'>2017-01-30 15:53:57 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools?h=nds-private-remove&id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>cdca06e4e85974d8a3503ab15709dbbaf90d3dd1</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools?id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>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&id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>268b0c01070a957006db97c88dccb5fb061440ff</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools?h=nds-private-remove&id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>tools</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools?h=nds-private-remove&id=1b89970d81bbd52720fc64a3fe9572ee33588363'>1b89970d81bbd52720fc64a3fe9572ee33588363</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools?h=nds-private-remove&id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1&id2=1b89970d81bbd52720fc64a3fe9572ee33588363'>diff</a>)</td></tr></table>
<div class='commit-subject'>pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler</div><div class='commit-msg'>According to VLI64 Intel Atom E3800 Specification Update (#329901)
concurrent read accesses may result in returning 0xffffffff and write
accesses may be dropped silently.
To workaround all accesses must be protected by locks.
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>Diffstat</a> (limited to 'tools')</div><table summary='diffstat' class='diffstat'>