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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /fs/udf/udftime.c
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'fs/udf/udftime.c')
-rw-r--r--fs/udf/udftime.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/fs/udf/udftime.c b/fs/udf/udftime.c
new file mode 100644
index 000000000..78ecc6336
--- /dev/null
+++ b/fs/udf/udftime.c
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: LGPL-2.0+
+/* Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Paul Eggert (eggert@twinsun.com). */
+
+/*
+ * dgb 10/02/98: ripped this from glibc source to help convert timestamps
+ * to unix time
+ * 10/04/98: added new table-based lookup after seeing how ugly
+ * the gnu code is
+ * blf 09/27/99: ripped out all the old code and inserted new table from
+ * John Brockmeyer (without leap second corrections)
+ * rewrote udf_stamp_to_time and fixed timezone accounting in
+ * udf_time_to_stamp.
+ */
+
+/*
+ * We don't take into account leap seconds. This may be correct or incorrect.
+ * For more NIST information (especially dealing with leap seconds), see:
+ * http://www.boulder.nist.gov/timefreq/pubs/bulletin/leapsecond.htm
+ */
+
+#include "udfdecl.h"
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/time.h>
+
+void
+udf_disk_stamp_to_time(struct timespec64 *dest, struct timestamp src)
+{
+ u16 typeAndTimezone = le16_to_cpu(src.typeAndTimezone);
+ u16 year = le16_to_cpu(src.year);
+ uint8_t type = typeAndTimezone >> 12;
+ int16_t offset;
+
+ if (type == 1) {
+ offset = typeAndTimezone << 4;
+ /* sign extent offset */
+ offset = (offset >> 4);
+ if (offset == -2047) /* unspecified offset */
+ offset = 0;
+ } else
+ offset = 0;
+
+ dest->tv_sec = mktime64(year, src.month, src.day, src.hour, src.minute,
+ src.second);
+ dest->tv_sec -= offset * 60;
+
+ /*
+ * Sanitize nanosecond field since reportedly some filesystems are
+ * recorded with bogus sub-second values.
+ */
+ if (src.centiseconds < 100 && src.hundredsOfMicroseconds < 100 &&
+ src.microseconds < 100) {
+ dest->tv_nsec = 1000 * (src.centiseconds * 10000 +
+ src.hundredsOfMicroseconds * 100 + src.microseconds);
+ } else {
+ dest->tv_nsec = 0;
+ }
+}
+
+void
+udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 ts)
+{
+ time64_t seconds;
+ int16_t offset;
+ struct tm tm;
+
+ offset = -sys_tz.tz_minuteswest;
+
+ dest->typeAndTimezone = cpu_to_le16(0x1000 | (offset & 0x0FFF));
+
+ seconds = ts.tv_sec + offset * 60;
+ time64_to_tm(seconds, 0, &tm);
+ dest->year = cpu_to_le16(tm.tm_year + 1900);
+ dest->month = tm.tm_mon + 1;
+ dest->day = tm.tm_mday;
+ dest->hour = tm.tm_hour;
+ dest->minute = tm.tm_min;
+ dest->second = tm.tm_sec;
+ dest->centiseconds = ts.tv_nsec / 10000000;
+ dest->hundredsOfMicroseconds = (ts.tv_nsec / 1000 -
+ dest->centiseconds * 10000) / 100;
+ dest->microseconds = (ts.tv_nsec / 1000 - dest->centiseconds * 10000 -
+ dest->hundredsOfMicroseconds * 100);
+}
+
+/* EOF */