From 34be4dbf87fc3e474a842305394534216d428f5d Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Thu, 19 Oct 2017 16:47:48 +0200
Subject: [PATCH] isofs: fix timestamps beyond 2027
Git-commit: 34be4dbf87fc3e474a842305394534216d428f5d
Patch-mainline: v4.15-rc1
References: bsc#1052766
isofs uses a 'char' variable to load the number of years since
1900 for an inode timestamp. On architectures that use a signed
char type by default, this results in an invalid date for
anything beyond 2027.
This changes the function argument to a 'u8' array, which
is defined the same way on all architectures, and unambiguously
lets us use years until 2155.
This should be backported to all kernels that might still be
in use by that date.
Cc: stable@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Jan Kara <jack@suse.cz>
---
fs/isofs/isofs.h | 2 +-
fs/isofs/rock.h | 2 +-
fs/isofs/util.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h
index 133a456b0425..bd4047585431 100644
--- a/fs/isofs/isofs.h
+++ b/fs/isofs/isofs.h
@@ -106,7 +106,7 @@ static inline unsigned int isonum_733(char *p)
/* Ignore bigendian datum due to broken mastering programs */
return get_unaligned_le32(p);
}
-extern int iso_date(char *, int);
+extern int iso_date(u8 *, int);
struct inode; /* To make gcc happy */
diff --git a/fs/isofs/rock.h b/fs/isofs/rock.h
index ed09e2b08637..f835976ce033 100644
--- a/fs/isofs/rock.h
+++ b/fs/isofs/rock.h
@@ -65,7 +65,7 @@ struct RR_PL_s {
};
struct stamp {
- char time[7];
+ __u8 time[7]; /* actually 6 unsigned, 1 signed */
} __attribute__ ((packed));
struct RR_TF_s {
diff --git a/fs/isofs/util.c b/fs/isofs/util.c
index 005a15cfd30a..37860fea364d 100644
--- a/fs/isofs/util.c
+++ b/fs/isofs/util.c
@@ -15,7 +15,7 @@
* to GMT. Thus we should always be correct.
*/
-int iso_date(char * p, int flag)
+int iso_date(u8 *p, int flag)
{
int year, month, day, hour, minute, second, tz;
int crtime;
--
2.13.6