From: Christian Brauner <christian.brauner@ubuntu.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
Christoph Hellwig <hch@infradead.org>,
linux-fsdevel@vger.kernel.org
Cc: "John Johansen" <john.johansen@canonical.com>,
"James Morris" <jmorris@namei.org>,
"Mimi Zohar" <zohar@linux.ibm.com>,
"Dmitry Kasatkin" <dmitry.kasatkin@gmail.com>,
"Stephen Smalley" <stephen.smalley.work@gmail.com>,
"Casey Schaufler" <casey@schaufler-ca.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Andreas Dilger" <adilger.kernel@dilger.ca>,
"OGAWA Hirofumi" <hirofumi@mail.parknet.co.jp>,
"Geoffrey Thomas" <geofft@ldpreload.com>,
"Mrunal Patel" <mpatel@redhat.com>,
"Josh Triplett" <josh@joshtriplett.org>,
"Andy Lutomirski" <luto@kernel.org>,
"Theodore Tso" <tytso@mit.edu>, "Alban Crequy" <alban@kinvolk.io>,
"Tycho Andersen" <tycho@tycho.ws>,
"David Howells" <dhowells@redhat.com>,
"James Bottomley" <James.Bottomley@hansenpartnership.com>,
"Seth Forshee" <seth.forshee@canonical.com>,
"Stéphane Graber" <stgraber@ubuntu.com>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Aleksa Sarai" <cyphar@cyphar.com>,
"Lennart Poettering" <lennart@poettering.net>,
"Eric W. Biederman" <ebiederm@xmission.com>,
smbarber@chromium.org, "Phil Estes" <estesp@gmail.com>,
"Serge Hallyn" <serge@hallyn.com>,
"Kees Cook" <keescook@chromium.org>,
"Todd Kjos" <tkjos@google.com>,
"Paul Moore" <paul@paul-moore.com>,
"Jonathan Corbet" <corbet@lwn.net>,
containers@lists.linux-foundation.org,
linux-security-module@vger.kernel.org, linux-api@vger.kernel.org,
linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
linux-integrity@vger.kernel.org, selinux@vger.kernel.org,
"Christian Brauner" <christian.brauner@ubuntu.com>,
"Christoph Hellwig" <hch@lst.de>
Subject: [PATCH v5 25/42] utimes: handle idmapped mounts
Date: Tue, 12 Jan 2021 23:01:07 +0100 [thread overview]
Message-ID: <20210112220124.837960-26-christian.brauner@ubuntu.com> (raw)
In-Reply-To: <20210112220124.837960-1-christian.brauner@ubuntu.com>
Enable the vfs_utimes() helper to handle idmapped mounts by passing down
the mount's user namespace. If the initial user namespace is passed
nothing changes so non-idmapped mounts will see identical behavior as
before.
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
/* v2 */
unchanged
/* v3 */
unchanged
/* v4 */
- Serge Hallyn <serge@hallyn.com>:
- Use "mnt_userns" to refer to a vfsmount's userns everywhere to make
terminology consistent.
/* v5 */
base-commit: 7c53f6b671f4aba70ff15e1b05148b10d58c2837
---
fs/utimes.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/utimes.c b/fs/utimes.c
index 1a4130bee157..33fa753bab3a 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -22,6 +22,7 @@ int vfs_utimes(const struct path *path, struct timespec64 *times)
struct iattr newattrs;
struct inode *inode = path->dentry->d_inode;
struct inode *delegated_inode = NULL;
+ struct user_namespace *mnt_userns;
if (times) {
if (!nsec_valid(times[0].tv_nsec) ||
@@ -61,8 +62,9 @@ int vfs_utimes(const struct path *path, struct timespec64 *times)
newattrs.ia_valid |= ATTR_TOUCH;
}
retry_deleg:
+ mnt_userns = mnt_user_ns(path->mnt);
inode_lock(inode);
- error = notify_change(&init_user_ns, path->dentry, &newattrs, &delegated_inode);
+ error = notify_change(mnt_userns, path->dentry, &newattrs, &delegated_inode);
inode_unlock(inode);
if (delegated_inode) {
error = break_deleg_wait(&delegated_inode);
--
2.30.0
next prev parent reply other threads:[~2021-01-12 22:17 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 22:00 [PATCH v5 00/42] idmapped mounts Christian Brauner
2021-01-12 22:00 ` [PATCH v5 01/42] namespace: take lock_mount_hash() directly when changing flags Christian Brauner
2021-01-12 22:00 ` [PATCH v5 02/42] mount: make {lock,unlock}_mount_hash() static Christian Brauner
2021-01-12 22:00 ` [PATCH v5 03/42] namespace: only take read lock in do_reconfigure_mnt() Christian Brauner
2021-01-12 22:00 ` [PATCH v5 04/42] fs: split out functions to hold writers Christian Brauner
2021-01-12 22:00 ` [PATCH v5 05/42] fs: add attr_flags_to_mnt_flags helper Christian Brauner
2021-01-12 22:00 ` [PATCH v5 06/42] fs: add mount_setattr() Christian Brauner
2021-01-12 22:00 ` [PATCH v5 07/42] tests: add mount_setattr() selftests Christian Brauner
2021-01-12 22:00 ` [PATCH v5 08/42] fs: add id translation helpers Christian Brauner
2021-01-12 22:00 ` [PATCH v5 09/42] mount: attach mappings to mounts Christian Brauner
2021-01-19 9:20 ` Christoph Hellwig
2021-01-12 22:00 ` [PATCH v5 10/42] capability: handle idmapped mounts Christian Brauner
2021-01-19 9:22 ` Christoph Hellwig
2021-01-12 22:00 ` [PATCH v5 11/42] namei: make permission helpers idmapped mount aware Christian Brauner
2021-01-19 9:23 ` Christoph Hellwig
2021-01-12 22:00 ` [PATCH v5 12/42] inode: make init and " Christian Brauner
2021-01-19 9:24 ` Christoph Hellwig
2021-01-12 22:00 ` [PATCH v5 13/42] attr: handle idmapped mounts Christian Brauner
2021-01-19 9:25 ` Christoph Hellwig
2021-01-12 22:00 ` [PATCH v5 14/42] acl: " Christian Brauner
2021-01-19 9:26 ` Christoph Hellwig
2021-01-12 22:00 ` [PATCH v5 15/42] fs: add file_user_ns() helper Christian Brauner
2021-01-19 9:27 ` Christoph Hellwig
2021-01-19 15:05 ` Jann Horn
2021-01-20 12:03 ` Christian Brauner
2021-01-12 22:00 ` [PATCH v5 16/42] xattr: handle idmapped mounts Christian Brauner
2021-01-19 9:31 ` Christoph Hellwig
2021-01-12 22:00 ` [PATCH v5 17/42] commoncap: " Christian Brauner
2021-01-19 9:31 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 18/42] stat: " Christian Brauner
2021-01-19 9:32 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 19/42] namei: handle idmapped mounts in may_*() helpers Christian Brauner
2021-01-19 9:33 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 20/42] namei: introduce struct renamedata Christian Brauner
2021-01-19 9:34 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 21/42] namei: prepare for idmapped mounts Christian Brauner
2021-01-19 9:34 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 22/42] open: handle idmapped mounts in do_truncate() Christian Brauner
2021-01-19 9:37 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 23/42] open: handle idmapped mounts Christian Brauner
2021-01-19 9:38 ` Christoph Hellwig
2021-01-19 14:57 ` Christian Brauner
2021-01-12 22:01 ` [PATCH v5 24/42] af_unix: " Christian Brauner
2021-01-19 9:39 ` Christoph Hellwig
2021-01-12 22:01 ` Christian Brauner [this message]
2021-01-19 9:40 ` [PATCH v5 25/42] utimes: " Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 26/42] fcntl: " Christian Brauner
2021-01-19 9:41 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 27/42] notify: " Christian Brauner
2021-01-19 9:42 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 28/42] init: " Christian Brauner
2021-01-12 22:01 ` [PATCH v5 29/42] ioctl: " Christian Brauner
2021-01-19 9:44 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 30/42] would_dump: " Christian Brauner
2021-01-19 9:44 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 31/42] exec: " Christian Brauner
2021-01-19 9:45 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 33/42] apparmor: " Christian Brauner
2021-01-12 22:01 ` [PATCH v5 34/42] ima: " Christian Brauner
2021-01-12 22:01 ` [PATCH v5 35/42] fat: " Christian Brauner
2021-01-12 22:01 ` [PATCH v5 36/42] ext4: support " Christian Brauner
2021-01-12 22:01 ` [PATCH v5 37/42] xfs: " Christian Brauner
2021-01-14 20:51 ` Dave Chinner
2021-01-14 22:10 ` Christian Brauner
2021-01-17 21:06 ` Dave Chinner
2021-01-15 16:22 ` Christoph Hellwig
2021-01-12 22:01 ` [PATCH v5 38/42] ecryptfs: do not mount on top of " Christian Brauner
2021-01-12 22:01 ` [PATCH v5 39/42] overlayfs: " Christian Brauner
2021-01-12 22:01 ` [PATCH v5 40/42] fs: introduce MOUNT_ATTR_IDMAP Christian Brauner
2021-01-19 9:47 ` Christoph Hellwig
2021-01-19 11:43 ` Christian Brauner
2021-01-12 22:01 ` [PATCH v5 41/42] tests: extend mount_setattr tests Christian Brauner
2021-01-13 0:32 ` Randy Dunlap
2021-01-14 17:12 ` [PATCH v5 00/42] idmapped mounts Darrick J. Wong
2021-01-14 17:54 ` Christian Brauner
2021-01-14 20:43 ` Dave Chinner
2021-01-15 16:24 ` Christoph Hellwig
2021-01-15 17:51 ` Theodore Ts'o
2021-01-16 0:27 ` Christian Brauner
[not found] ` <20210112220124.837960-33-christian.brauner@ubuntu.com>
2021-01-19 9:45 ` [PATCH v5 32/42] fs: make helpers idmap mount aware Christoph Hellwig
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