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From: Frank Sorenson <sorenson@redhat.com>
To: linux-fsdevel@vger.kernel.org
Cc: hirofumi@mail.parknet.co.jp
Subject: [PATCH V4 4/4] fat: truncate inode timestamp updates in setattr
Date: Wed, 26 Sep 2018 17:43:35 -0500	[thread overview]
Message-ID: <20180926224335.5919-5-sorenson@redhat.com> (raw)
In-Reply-To: <20180926224335.5919-1-sorenson@redhat.com>

setattr_copy can't truncate timestamps correctly for
msdos/vfat, so truncate and copy them ourselves.

Signed-off-by: Frank Sorenson <sorenson@redhat.com>
---
 fs/fat/file.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/fs/fat/file.c b/fs/fat/file.c
index 4b5438405415..13935ee99e1e 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -542,6 +542,18 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
 		up_write(&MSDOS_I(inode)->truncate_lock);
 	}
 
+	/*
+	 * setattr_copy can't truncate these appropriately, so we'll
+	 * copy them ourselves
+	 */
+	if (attr->ia_valid & ATTR_ATIME)
+		fat_truncate_time(inode, &attr->ia_atime, S_ATIME);
+	if (attr->ia_valid & ATTR_CTIME)
+		fat_truncate_time(inode, &attr->ia_ctime, S_CTIME);
+	if (attr->ia_valid & ATTR_MTIME)
+		fat_truncate_time(inode, &attr->ia_mtime, S_MTIME);
+	attr->ia_valid &= ~(ATTR_ATIME|ATTR_CTIME|ATTR_MTIME);
+
 	setattr_copy(inode, attr);
 	mark_inode_dirty(inode);
 out:
-- 
2.14.4

      parent reply	other threads:[~2018-09-27  4:58 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-26 22:43 [PATCH V4 0/4] fat: timestamp updates Frank Sorenson
2018-09-26 22:43 ` [PATCH V4 1/4] fat: create a function to calculate the timezone offest Frank Sorenson
2018-09-26 22:43 ` [PATCH V2 2/4] fat: add functions to update and truncate timestamps appropriately Frank Sorenson
2018-09-28 10:31   ` OGAWA Hirofumi
2018-09-26 22:43 ` [PATCH V4 3/4] fat: change timestamp updates to use fat_truncate_time Frank Sorenson
2018-09-26 22:43 ` Frank Sorenson [this message]

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