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>,
"Amir Goldstein" <amir73il@gmail.com>,
"Miklos Szeredi" <miklos@szeredi.hu>,
"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>,
"Jann Horn" <jannh@google.com>,
"Seth Forshee" <seth.forshee@canonical.com>,
"Stéphane Graber" <stgraber@ubuntu.com>,
"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>,
"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-unionfs@vger.kernel.org,
linux-audit@redhat.com, linux-integrity@vger.kernel.org,
selinux@vger.kernel.org,
"Christian Brauner" <christian.brauner@ubuntu.com>
Subject: [PATCH 22/34] af_unix: handle idmapped mounts
Date: Thu, 29 Oct 2020 01:32:40 +0100 [thread overview]
Message-ID: <20201029003252.2128653-23-christian.brauner@ubuntu.com> (raw)
In-Reply-To: <20201029003252.2128653-1-christian.brauner@ubuntu.com>
When binding a non-abstract AF_UNIX socket it will gain a representation in the
filesystem. Enable the socket infrastructure to handle idmapped mounts by using
the new vfs_mapped_mknod() helper. Non-idmapped mounts will not see any altered
behavior.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
net/unix/af_unix.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 41c3303c3357..f79f7ce3243f 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -996,7 +996,7 @@ static int unix_mknod(const char *sun_path, umode_t mode, struct path *res)
*/
err = security_path_mknod(&path, dentry, mode, 0);
if (!err) {
- err = vfs_mknod(d_inode(path.dentry), dentry, mode, 0);
+ err = vfs_mapped_mknod(mnt_user_ns(path.mnt), d_inode(path.dentry), dentry, mode, 0);
if (!err) {
res->mnt = mntget(path.mnt);
res->dentry = dget(dentry);
--
2.29.0
next prev parent reply other threads:[~2020-10-29 0:37 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-29 0:32 [PATCH 00/34] fs: idmapped mounts Christian Brauner
2020-10-29 0:32 ` [PATCH 01/34] namespace: take lock_mount_hash() directly when changing flags Christian Brauner
2020-11-01 14:41 ` Christoph Hellwig
2020-11-02 13:33 ` Christian Brauner
2020-10-29 0:32 ` [PATCH 02/34] namespace: only take read lock in do_reconfigure_mnt() Christian Brauner
2020-10-29 0:32 ` [PATCH 03/34] fs: add mount_setattr() Christian Brauner
2020-11-01 14:42 ` Christoph Hellwig
2020-11-02 13:34 ` Christian Brauner
2020-10-29 0:32 ` [PATCH 04/34] tests: add mount_setattr() selftests Christian Brauner
2020-10-29 0:32 ` [PATCH 05/34] fs: introduce MOUNT_ATTR_IDMAP Christian Brauner
2020-11-01 14:45 ` Christoph Hellwig
2020-11-02 13:29 ` Christian Brauner
2020-10-29 0:32 ` [PATCH 06/34] fs: add id translation helpers Christian Brauner
2020-11-01 14:46 ` Christoph Hellwig
2020-11-02 13:25 ` Christian Brauner
2020-10-29 0:32 ` [PATCH 07/34] capability: handle idmapped mounts Christian Brauner
2020-11-01 14:48 ` Christoph Hellwig
2020-11-02 13:23 ` Christian Brauner
2020-10-29 0:32 ` [PATCH 08/34] namei: add idmapped mount aware permission helpers Christian Brauner
2020-10-29 0:32 ` [PATCH 09/34] inode: add idmapped mount aware init and " Christian Brauner
2020-10-29 0:32 ` [PATCH 10/34] attr: handle idmapped mounts Christian Brauner
2020-10-29 0:32 ` [PATCH 11/34] acl: " Christian Brauner
2020-10-29 0:32 ` [PATCH 12/34] xattr: " Christian Brauner
2020-10-29 0:32 ` [PATCH 13/34] selftests: add idmapped mounts xattr selftest Christian Brauner
2020-10-29 0:32 ` [PATCH 14/34] commoncap: handle idmapped mounts Christian Brauner
2020-10-29 0:32 ` [PATCH 15/34] stat: add mapped_generic_fillattr() Christian Brauner
2020-10-29 0:32 ` [PATCH 16/34] namei: handle idmapped mounts in may_*() helpers Christian Brauner
2020-10-29 0:32 ` [PATCH 17/34] namei: introduce struct renamedata Christian Brauner
2020-10-29 0:32 ` [PATCH 18/34] namei: prepare for idmapped mounts Christian Brauner
2020-10-29 0:32 ` [PATCH 19/34] namei: add lookup helpers with idmapped mounts aware permission checking Christian Brauner
2020-10-29 0:32 ` [PATCH 20/34] open: handle idmapped mounts in do_truncate() Christian Brauner
2020-10-29 0:32 ` [PATCH 21/34] open: handle idmapped mounts Christian Brauner
2020-10-29 0:32 ` Christian Brauner [this message]
2020-10-29 0:32 ` [PATCH 23/34] utimes: " Christian Brauner
2020-10-29 0:32 ` [PATCH 24/34] would_dump: " Christian Brauner
2020-10-29 0:32 ` [PATCH 25/34] exec: " Christian Brauner
2020-10-29 0:32 ` [PATCH 26/34] fs: add helpers for idmap mounts Christian Brauner
2020-10-29 0:32 ` [PATCH 27/34] apparmor: handle idmapped mounts Christian Brauner
2020-10-29 0:32 ` [PATCH 28/34] audit: " Christian Brauner
2020-10-29 0:32 ` [PATCH 29/34] ima: " Christian Brauner
2020-10-29 0:32 ` [PATCH 30/34] ext4: support " Christian Brauner
2020-10-29 0:32 ` [PATCH 31/34] expfs: handle " Christian Brauner
2020-10-29 0:32 ` [PATCH 32/34] overlayfs: handle idmapped lower directories Christian Brauner
2020-10-30 11:10 ` Amir Goldstein
2020-10-30 11:52 ` Christian Brauner
2020-10-29 0:32 ` [PATCH 33/34] overlayfs: handle idmapped merged mounts Christian Brauner
2020-10-30 9:57 ` Amir Goldstein
2020-10-29 0:32 ` [PATCH 34/34] fat: handle idmapped mounts Christian Brauner
2020-10-29 2:27 ` [PATCH 00/34] fs: " Dave Chinner
2020-10-29 16:19 ` Christian Brauner
2020-10-29 7:20 ` Sargun Dhillon
2020-10-29 15:47 ` Eric W. Biederman
2020-10-29 15:51 ` Aleksa Sarai
2020-10-29 16:37 ` Eric W. Biederman
2020-10-30 2:18 ` Serge E. Hallyn
2020-10-30 15:07 ` Seth Forshee
2020-10-30 16:03 ` Serge E. Hallyn
2020-11-03 14:10 ` Alban Crequy
2020-10-29 16:05 ` Lennart Poettering
2020-10-29 16:36 ` Sargun Dhillon
2020-10-29 16:54 ` Eric W. Biederman
[not found] ` <20201029161231.GA108315@cisco>
2020-10-29 16:23 ` Serge E. Hallyn
2020-10-29 16:44 ` Eric W. Biederman
2020-10-29 18:04 ` Stéphane Graber
2020-10-29 21:58 ` Andy Lutomirski
2020-10-30 12:01 ` Christian Brauner
2020-10-30 16:17 ` Serge E. Hallyn
2020-10-31 17:43 ` Andy Lutomirski
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