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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /fs/ntfs/collate.c
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'fs/ntfs/collate.c')
-rw-r--r--fs/ntfs/collate.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/fs/ntfs/collate.c b/fs/ntfs/collate.c
new file mode 100644
index 000000000..77e340389
--- /dev/null
+++ b/fs/ntfs/collate.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * NTFS kernel collation handling.
+ *
+ * Copyright (c) 2004 Anton Altaparmakov
+ *
+ * Part of this file is based on code from the NTFS-3G.
+ * and is copyrighted by the respective authors below:
+ * Copyright (c) 2004 Anton Altaparmakov
+ * Copyright (c) 2005 Yura Pakhuchiy
+ */
+
+#include "collate.h"
+#include "debug.h"
+#include "ntfs.h"
+
+#include <linux/sort.h>
+
+static int ntfs_collate_binary(struct ntfs_volume *vol,
+ const void *data1, const u32 data1_len,
+ const void *data2, const u32 data2_len)
+{
+ int rc;
+
+ 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;
+ }
+ return rc;
+}
+
+static int ntfs_collate_ntofs_ulong(struct ntfs_volume *vol,
+ const void *data1, const u32 data1_len,
+ const void *data2, const u32 data2_len)
+{
+ int rc;
+ u32 d1 = le32_to_cpup(data1), d2 = le32_to_cpup(data2);
+
+ if (data1_len != data2_len || data1_len != 4)
+ return -EINVAL;
+
+ if (d1 < d2)
+ rc = -1;
+ else {
+ if (d1 == d2)
+ rc = 0;
+ else
+ rc = 1;
+ }
+ return rc;
+}
+
+/*
+ * ntfs_collate_ntofs_ulongs - Which of two le32 arrays should be listed first
+ * @vol: ntfs volume
+ * @data1: first ulong array to collate
+ * @data1_len: length in bytes of @data1
+ * @data2: second ulong array to collate
+ * @data2_len: length in bytes of @data2
+ *
+ * Returns: -1, 0 or 1 depending of how the arrays compare
+ */
+static int ntfs_collate_ntofs_ulongs(struct ntfs_volume *vol,
+ const void *data1, const u32 data1_len,
+ const void *data2, const u32 data2_len)
+{
+ int len;
+ const __le32 *p1 = data1, *p2 = data2;
+ u32 d1, d2;
+
+ if (data1_len != data2_len || data1_len & 3) {
+ ntfs_error(vol->sb, "data1_len or data2_len not valid\n");
+ return -1;
+ }
+
+ len = data1_len;
+ do {
+ d1 = le32_to_cpup(p1);
+ p1++;
+ d2 = le32_to_cpup(p2);
+ p2++;
+ } while (d1 == d2 && (len -= 4) > 0);
+ return cmp_int(d1, d2);
+}
+
+/*
+ * ntfs_collate_file_name - Which of two filenames should be listed first
+ * @vol: ntfs volume
+ * @data1: first filename to collate
+ * @data1_len: length in bytes of @data1(unused)
+ * @data2: second filename to collate
+ * @data2_len: length in bytes of @data2(unused)
+ */
+static int ntfs_collate_file_name(struct ntfs_volume *vol,
+ const void *data1, const u32 data1_len,
+ const void *data2, const u32 data2_len)
+{
+ int rc;
+
+ rc = ntfs_file_compare_values(data1, data2, -EINVAL,
+ IGNORE_CASE, vol->upcase, vol->upcase_len);
+ if (!rc)
+ rc = ntfs_file_compare_values(data1, data2,
+ -EINVAL, CASE_SENSITIVE, vol->upcase, vol->upcase_len);
+ return rc;
+}
+
+/*
+ * 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. return -EINVAL if an error occurred.
+ */
+int ntfs_collate(struct ntfs_volume *vol, __le32 cr,
+ const void *data1, const u32 data1_len,
+ const void *data2, const u32 data2_len)
+{
+ switch (le32_to_cpu(cr)) {
+ case le32_to_cpu(COLLATION_BINARY):
+ return ntfs_collate_binary(vol, data1, data1_len,
+ data2, data2_len);
+ case le32_to_cpu(COLLATION_FILE_NAME):
+ return ntfs_collate_file_name(vol, data1, data1_len,
+ data2, data2_len);
+ case le32_to_cpu(COLLATION_NTOFS_ULONG):
+ return ntfs_collate_ntofs_ulong(vol, data1, data1_len,
+ data2, data2_len);
+ case le32_to_cpu(COLLATION_NTOFS_ULONGS):
+ return ntfs_collate_ntofs_ulongs(vol, data1, data1_len,
+ data2, data2_len);
+ default:
+ ntfs_error(vol->sb, "Unknown collation rule 0x%x",
+ le32_to_cpu(cr));
+ return -EINVAL;
+ }
+}