From: Deepa Dinamani <deepa.kernel@gmail.com> To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Cc: arnd@arndb.de, tglx@linutronix.de, gregkh@linuxfoundation.org, akpm@linux-foundation.org, tytso@mit.edu, viro@zeniv.linux.org.uk, y2038@lists.linaro.org, Andreas Dilger <adilger.kernel@dilger.ca>, linux-ext4@vger.kernel.org Subject: [RFC 4/6] ext4: Initialize timestamps limits Date: Wed, 2 Nov 2016 08:04:54 -0700 [thread overview] Message-ID: <1478099096-25637-5-git-send-email-deepa.kernel@gmail.com> (raw) In-Reply-To: <1478099096-25637-1-git-send-email-deepa.kernel@gmail.com> ext4 has different overflow limits for max filesystem timestamps based on the extra bytes available. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: linux-ext4@vger.kernel.org --- fs/ext4/ext4.h | 4 ++++ fs/ext4/super.c | 7 ++++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 6789379..fca339a 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1635,6 +1635,10 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei) #define EXT4_GOOD_OLD_INODE_SIZE 128 +#define EXT4_EXTRA_TIMESTAMP_MAX (((s64)1 << 34) - 1 + S32_MIN) +#define EXT4_NON_EXTRA_TIMESTAMP_MAX Y2038_EXPIRY_TIMESTAMP +#define EXT4_TIMESTAMP_MIN S32_MIN + /* * Feature set definitions */ diff --git a/fs/ext4/super.c b/fs/ext4/super.c index ab00bff..ebd039d 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3633,8 +3633,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_inode_size); goto failed_mount; } - if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) + if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) { sb->s_time_gran = 1 << (EXT4_EPOCH_BITS - 2); + sb->s_time_max = EXT4_EXTRA_TIMESTAMP_MAX; + } else + sb->s_time_max = EXT4_NON_EXTRA_TIMESTAMP_MAX; + + sb->s_time_min = EXT4_TIMESTAMP_MIN; } sbi->s_desc_size = le16_to_cpu(es->s_desc_size); -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Deepa Dinamani <deepa.kernel@gmail.com> To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Cc: tytso@mit.edu, arnd@arndb.de, y2038@lists.linaro.org, gregkh@linuxfoundation.org, Andreas Dilger <adilger.kernel@dilger.ca>, viro@zeniv.linux.org.uk, tglx@linutronix.de, linux-ext4@vger.kernel.org, akpm@linux-foundation.org Subject: [RFC 4/6] ext4: Initialize timestamps limits Date: Wed, 2 Nov 2016 08:04:54 -0700 [thread overview] Message-ID: <1478099096-25637-5-git-send-email-deepa.kernel@gmail.com> (raw) In-Reply-To: <1478099096-25637-1-git-send-email-deepa.kernel@gmail.com> ext4 has different overflow limits for max filesystem timestamps based on the extra bytes available. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: linux-ext4@vger.kernel.org --- fs/ext4/ext4.h | 4 ++++ fs/ext4/super.c | 7 ++++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 6789379..fca339a 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1635,6 +1635,10 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei) #define EXT4_GOOD_OLD_INODE_SIZE 128 +#define EXT4_EXTRA_TIMESTAMP_MAX (((s64)1 << 34) - 1 + S32_MIN) +#define EXT4_NON_EXTRA_TIMESTAMP_MAX Y2038_EXPIRY_TIMESTAMP +#define EXT4_TIMESTAMP_MIN S32_MIN + /* * Feature set definitions */ diff --git a/fs/ext4/super.c b/fs/ext4/super.c index ab00bff..ebd039d 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3633,8 +3633,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_inode_size); goto failed_mount; } - if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) + if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) { sb->s_time_gran = 1 << (EXT4_EPOCH_BITS - 2); + sb->s_time_max = EXT4_EXTRA_TIMESTAMP_MAX; + } else + sb->s_time_max = EXT4_NON_EXTRA_TIMESTAMP_MAX; + + sb->s_time_min = EXT4_TIMESTAMP_MIN; } sbi->s_desc_size = le16_to_cpu(es->s_desc_size); -- 2.7.4 _______________________________________________ Y2038 mailing list Y2038@lists.linaro.org https://lists.linaro.org/mailman/listinfo/y2038
next prev parent reply other threads:[~2016-11-02 15:05 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-11-02 15:04 [RFC 0/6] vfs: Add timestamp range check support Deepa Dinamani 2016-11-02 15:04 ` Deepa Dinamani 2016-11-02 15:04 ` [RFC 1/6] vfs: Add file timestamp range support Deepa Dinamani 2016-11-02 15:04 ` [RFC 2/6] vfs: Add checks for filesystem timestamp limits Deepa Dinamani 2016-11-02 15:04 ` [RFC 3/6] afs: Add time limits in the super block Deepa Dinamani 2016-11-02 15:04 ` Deepa Dinamani [this message] 2016-11-02 15:04 ` [RFC 4/6] ext4: Initialize timestamps limits Deepa Dinamani 2016-11-02 15:04 ` [RFC 5/6] vfs: Add timestamp_truncate() api Deepa Dinamani 2016-11-02 15:04 ` [RFC 6/6] utimes: Clamp the timestamps before update Deepa Dinamani 2016-11-02 22:48 ` [RFC 0/6] vfs: Add timestamp range check support Dave Chinner 2016-11-03 6:54 ` Darrick J. Wong 2016-11-03 20:43 ` Theodore Ts'o 2016-11-03 20:43 ` Theodore Ts'o 2016-11-03 23:48 ` Dave Chinner 2016-11-03 23:48 ` Dave Chinner 2016-11-04 0:27 ` Andreas Dilger 2016-11-06 17:44 ` Deepa Dinamani 2016-11-06 20:28 ` Arnd Bergmann 2016-11-06 20:28 ` Arnd Bergmann 2016-11-06 21:14 ` Deepa Dinamani 2016-11-24 0:47 Deepa Dinamani 2016-11-24 0:47 ` [RFC 4/6] ext4: Initialize timestamps limits Deepa Dinamani 2016-11-24 0:47 ` Deepa Dinamani
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