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Subject[PATCH] isofs: prevent file time rollover after year 2038
Date
From: Thomas Schmitt <scdbackup@gmx.net>

Change the return type of function iso_date() from int to time64_t,
to avoid truncating to the 1902..2038 date range.

After this patch, the reported timestamps should fall into the
range reported in the s_time_min/s_time_max fields.

Signed-off-by: Thomas Schmitt <scdbackup@gmx.net>
Cc: stable@vger.kernel.org
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=800627
Fixes: 34be4dbf87fc ("isofs: fix timestamps beyond 2027")
Fixes: 5ad32b3acded ("isofs: Initialize filesystem timestamp ranges")
[arnd: expand changelog text slightly]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
fs/isofs/isofs.h | 2 +-
fs/isofs/util.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h
index dcdc191ed183..c3473ca3f686 100644
--- a/fs/isofs/isofs.h
+++ b/fs/isofs/isofs.h
@@ -106,7 +106,7 @@ static inline unsigned int isonum_733(u8 *p)
/* Ignore bigendian datum due to broken mastering programs */
return get_unaligned_le32(p);
}
-extern int iso_date(u8 *, int);
+extern time64_t iso_date(u8 *, int);

struct inode; /* To make gcc happy */

diff --git a/fs/isofs/util.c b/fs/isofs/util.c
index e88dba721661..348af786a8a4 100644
--- a/fs/isofs/util.c
+++ b/fs/isofs/util.c
@@ -16,10 +16,10 @@
* to GMT. Thus we should always be correct.
*/

-int iso_date(u8 *p, int flag)
+time64_t iso_date(u8 *p, int flag)
{
int year, month, day, hour, minute, second, tz;
- int crtime;
+ time64_t crtime;

year = p[0];
month = p[1];
--
2.29.2
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