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utimes: Clamp the timestamps in notify_change()

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commit eb31e2f63d85d1bec4f7b136f317e03c03db5503 upstream.

Push clamping timestamps into notify_change(), so in-kernel
callers like nfsd and overlayfs will get similar timestamp
set behavior as utimes.

AV: get rid of clamping in ->setattr() instances; we don't need
to bother with that there, with notify_change() doing normalization
in all cases now (it already did for implicit case, since current_time()
clamps).

Suggested-by: Miklos Szeredi <[email protected]>
Fixes: 42e729b9dd ("utimes: Clamp the timestamps before update")
Cc: [email protected] # v5.4
Cc: Deepa Dinamani <[email protected]>
Cc: Jeff Layton <[email protected]>
Signed-off-by: Amir Goldstein <[email protected]>
Signed-off-by: Al Viro <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Amir Goldstein 2019-11-24 21:31:45 +02:00 • committed by Greg Kroah-Hartman
commit cb33e477a5
6 changed files with 34 additions and 56 deletions
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9
fs/configfs/inode.c
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@ -76,14 +76,11 @@ int configfs_setattr(struct dentry * dentry, struct iattr * iattr)
if (ia_valid & ATTR_GID)
sd_iattr->ia_gid = iattr->ia_gid;
if (ia_valid & ATTR_ATIME)
sd_iattr->ia_atime = timestamp_truncate(iattr->ia_atime,
inode);
sd_iattr->ia_atime = iattr->ia_atime;
if (ia_valid & ATTR_MTIME)
sd_iattr->ia_mtime = timestamp_truncate(iattr->ia_mtime,
inode);
sd_iattr->ia_mtime = iattr->ia_mtime;
if (ia_valid & ATTR_CTIME)
sd_iattr->ia_ctime = timestamp_truncate(iattr->ia_ctime,
inode);
sd_iattr->ia_ctime = iattr->ia_ctime;
if (ia_valid & ATTR_MODE) {
umode_t mode = iattr->ia_mode;