From: Christian Brauner <christian.brauner@ubuntu.com> To: Alexander Viro <viro@zeniv.linux.org.uk>, Christoph Hellwig <hch@lst.de>, linux-fsdevel@vger.kernel.org Cc: Lennart Poettering <lennart@poettering.net>, Mimi Zohar <zohar@linux.ibm.com>, James Bottomley <James.Bottomley@hansenpartnership.com>, Andreas Dilger <adilger.kernel@dilger.ca>, containers@lists.linux-foundation.org, Tycho Andersen <tycho@tycho.ws>, Paul Moore <paul@paul-moore.com>, Jonathan Corbet <corbet@lwn.net>, smbarber@chromium.org, linux-ext4@vger.kernel.org, Mrunal Patel <mpatel@redhat.com>, Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>, selinux@vger.kernel.org, Josh Triplett <josh@joshtriplett.org>, Seth Forshee <seth.forshee@canonical.com>, Aleksa Sarai <cyphar@cyphar.com>, Andy Lutomirski <luto@kernel.org>, OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>, Geoffrey Thomas <geofft@ldpreload.com>, David Howells <dhowells@redhat.com>, John Johansen <john.johansen@canonical.com>, Theodore Tso <tytso@mit.edu>, Dmitry Kasatkin <dmitry.kasatkin@gmail.com>, Stephen Smalley <stephen.smalley.work@gmail.com>, linux-xfs@vger.kernel.org, linux-security-module@vger.kernel.org, "Eric W. Biederman" <ebiederm@xmission.com>, linux-api@vger.kernel.org, Casey Schaufler <casey@schaufler-ca.com>, Alban Crequy <alban@kinvolk.io>, linux-integrity@vger.kernel.org, Linus Torvalds <torvalds@linux-foundation.org>, Todd Kjos <tkjos@google.com> Subject: [PATCH v6 01/40] mount: attach mappings to mounts Date: Thu, 21 Jan 2021 14:19:20 +0100 [thread overview] Message-ID: <20210121131959.646623-2-christian.brauner@ubuntu.com> (raw) In-Reply-To: <20210121131959.646623-1-christian.brauner@ubuntu.com> In order to support per-mount idmappings vfsmounts are marked with user namespaces. The idmapping of the user namespace will be used to map the ids of vfs objects when they are accessed through that mount. By default all vfsmounts are marked with the initial user namespace. The initial user namespace is used to indicate that a mount is not idmapped. All operations behave as before. Based on prior discussions we want to attach the whole user namespace and not just a dedicated idmapping struct. This allows us to reuse all the helpers that already exist for dealing with idmappings instead of introducing a whole new range of helpers. In addition, if we decide in the future that we are confident enough to enable unprivileged users to setup idmapped mounts the permission checking can take into account whether the caller is privileged in the user namespace the mount is currently marked with. Later patches enforce that once a mount has been idmapped it can't be remapped. This keeps permission checking and life-cycle management simple. Users wanting to change the idmapped can always create a new detached mount with a different idmapping. Add a new mnt_userns member to vfsmount and two simple helpers to retrieve the mnt_userns from vfsmounts and files. The idea to attach user namespaces to vfsmounts has been floated around in various forms at Linux Plumbers in ~2018 with the original idea tracing back to a discussion in 2017 at a conference in St. Petersburg between Christoph, Tycho, and myself. Link: https://lore.kernel.org/r/20210112220124.837960-10-christian.brauner@ubuntu.com 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 Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> --- /* v2 */ patch introduced - Christoph Hellwig <hch@lst.de>: - Split internal implementation into separate patch and move syscall implementation later. /* v3 */ - David Howells <dhowells@redhat.com>: - Remove MNT_IDMAPPED flag. We can simply check the pointer and use smp_load_acquire() in later patches. - Tycho Andersen <tycho@tycho.pizza>: - Use READ_ONCE() in mnt_user_ns(). /* v4 */ - Serge Hallyn <serge@hallyn.com>: - Use "mnt_userns" to refer to a vfsmount's userns everywhere to make terminology consistent. - Christoph Hellwig <hch@lst.de>: - Drop the READ_ONCE() from this patch. At this point in the series we don't allowing changing the vfsmount's userns. The infra to do that is only introduced as almost the last patch in the series and there we immediately use smp_load_acquire() and smp_store_release(). /* v5 */ unchanged base-commit: 7c53f6b671f4aba70ff15e1b05148b10d58c2837 /* v6 */ base-commit: 19c329f6808995b142b3966301f217c831e7cf31 - Christoph Hellwig <hch@lst.de>: - Move file_mnt_user_ns() helper into this patch. --- fs/namespace.c | 9 +++++++++ include/linux/fs.h | 6 ++++++ include/linux/mount.h | 6 ++++++ 3 files changed, 21 insertions(+) diff --git a/fs/namespace.c b/fs/namespace.c index 9d33909d0f9e..ecdc63ef881c 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -210,6 +210,7 @@ static struct mount *alloc_vfsmnt(const char *name) INIT_HLIST_NODE(&mnt->mnt_mp_list); INIT_LIST_HEAD(&mnt->mnt_umounting); INIT_HLIST_HEAD(&mnt->mnt_stuck_children); + mnt->mnt.mnt_userns = &init_user_ns; } return mnt; @@ -547,6 +548,11 @@ int sb_prepare_remount_readonly(struct super_block *sb) static void free_vfsmnt(struct mount *mnt) { + struct user_namespace *mnt_userns; + + mnt_userns = mnt_user_ns(&mnt->mnt); + if (mnt_userns != &init_user_ns) + put_user_ns(mnt_userns); kfree_const(mnt->mnt_devname); #ifdef CONFIG_SMP free_percpu(mnt->mnt_pcp); @@ -1055,6 +1061,9 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root, mnt->mnt.mnt_flags &= ~(MNT_WRITE_HOLD|MNT_MARKED|MNT_INTERNAL); atomic_inc(&sb->s_active); + mnt->mnt.mnt_userns = mnt_user_ns(&old->mnt); + if (mnt->mnt.mnt_userns != &init_user_ns) + mnt->mnt.mnt_userns = get_user_ns(mnt->mnt.mnt_userns); mnt->mnt.mnt_sb = sb; mnt->mnt.mnt_root = dget(root); mnt->mnt_mountpoint = mnt->mnt.mnt_root; diff --git a/include/linux/fs.h b/include/linux/fs.h index fd47deea7c17..fd0b80e6361d 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -39,6 +39,7 @@ #include <linux/fs_types.h> #include <linux/build_bug.h> #include <linux/stddef.h> +#include <linux/mount.h> #include <asm/byteorder.h> #include <uapi/linux/fs.h> @@ -2231,6 +2232,7 @@ struct file_system_type { #define FS_HAS_SUBTYPE 4 #define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */ #define FS_DISALLOW_NOTIFY_PERM 16 /* Disable fanotify permission events */ +#define FS_ALLOW_IDMAP 32 /* FS has been updated to handle vfs idmappings. */ #define FS_THP_SUPPORT 8192 /* Remove once all fs converted */ #define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */ int (*init_fs_context)(struct fs_context *); @@ -2517,6 +2519,10 @@ struct filename { }; static_assert(offsetof(struct filename, iname) % sizeof(long) == 0); +static inline struct user_namespace *file_mnt_user_ns(struct file *file) +{ + return mnt_user_ns(file->f_path.mnt); +} extern long vfs_truncate(const struct path *, loff_t); extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs, struct file *filp); diff --git a/include/linux/mount.h b/include/linux/mount.h index aaf343b38671..52de25e08319 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -72,8 +72,14 @@ struct vfsmount { struct dentry *mnt_root; /* root of the mounted tree */ struct super_block *mnt_sb; /* pointer to superblock */ int mnt_flags; + struct user_namespace *mnt_userns; } __randomize_layout; +static inline struct user_namespace *mnt_user_ns(const struct vfsmount *mnt) +{ + return mnt->mnt_userns; +} + struct file; /* forward dec */ struct path; -- 2.30.0 _______________________________________________ Containers mailing list Containers@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/containers
WARNING: multiple messages have this Message-ID (diff)
From: Christian Brauner <christian.brauner@ubuntu.com> To: Alexander Viro <viro@zeniv.linux.org.uk>, Christoph Hellwig <hch@lst.de>, 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> Subject: [PATCH v6 01/40] mount: attach mappings to mounts Date: Thu, 21 Jan 2021 14:19:20 +0100 [thread overview] Message-ID: <20210121131959.646623-2-christian.brauner@ubuntu.com> (raw) In-Reply-To: <20210121131959.646623-1-christian.brauner@ubuntu.com> In order to support per-mount idmappings vfsmounts are marked with user namespaces. The idmapping of the user namespace will be used to map the ids of vfs objects when they are accessed through that mount. By default all vfsmounts are marked with the initial user namespace. The initial user namespace is used to indicate that a mount is not idmapped. All operations behave as before. Based on prior discussions we want to attach the whole user namespace and not just a dedicated idmapping struct. This allows us to reuse all the helpers that already exist for dealing with idmappings instead of introducing a whole new range of helpers. In addition, if we decide in the future that we are confident enough to enable unprivileged users to setup idmapped mounts the permission checking can take into account whether the caller is privileged in the user namespace the mount is currently marked with. Later patches enforce that once a mount has been idmapped it can't be remapped. This keeps permission checking and life-cycle management simple. Users wanting to change the idmapped can always create a new detached mount with a different idmapping. Add a new mnt_userns member to vfsmount and two simple helpers to retrieve the mnt_userns from vfsmounts and files. The idea to attach user namespaces to vfsmounts has been floated around in various forms at Linux Plumbers in ~2018 with the original idea tracing back to a discussion in 2017 at a conference in St. Petersburg between Christoph, Tycho, and myself. Link: https://lore.kernel.org/r/20210112220124.837960-10-christian.brauner@ubuntu.com 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 Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> --- /* v2 */ patch introduced - Christoph Hellwig <hch@lst.de>: - Split internal implementation into separate patch and move syscall implementation later. /* v3 */ - David Howells <dhowells@redhat.com>: - Remove MNT_IDMAPPED flag. We can simply check the pointer and use smp_load_acquire() in later patches. - Tycho Andersen <tycho@tycho.pizza>: - Use READ_ONCE() in mnt_user_ns(). /* v4 */ - Serge Hallyn <serge@hallyn.com>: - Use "mnt_userns" to refer to a vfsmount's userns everywhere to make terminology consistent. - Christoph Hellwig <hch@lst.de>: - Drop the READ_ONCE() from this patch. At this point in the series we don't allowing changing the vfsmount's userns. The infra to do that is only introduced as almost the last patch in the series and there we immediately use smp_load_acquire() and smp_store_release(). /* v5 */ unchanged base-commit: 7c53f6b671f4aba70ff15e1b05148b10d58c2837 /* v6 */ base-commit: 19c329f6808995b142b3966301f217c831e7cf31 - Christoph Hellwig <hch@lst.de>: - Move file_mnt_user_ns() helper into this patch. --- fs/namespace.c | 9 +++++++++ include/linux/fs.h | 6 ++++++ include/linux/mount.h | 6 ++++++ 3 files changed, 21 insertions(+) diff --git a/fs/namespace.c b/fs/namespace.c index 9d33909d0f9e..ecdc63ef881c 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -210,6 +210,7 @@ static struct mount *alloc_vfsmnt(const char *name) INIT_HLIST_NODE(&mnt->mnt_mp_list); INIT_LIST_HEAD(&mnt->mnt_umounting); INIT_HLIST_HEAD(&mnt->mnt_stuck_children); + mnt->mnt.mnt_userns = &init_user_ns; } return mnt; @@ -547,6 +548,11 @@ int sb_prepare_remount_readonly(struct super_block *sb) static void free_vfsmnt(struct mount *mnt) { + struct user_namespace *mnt_userns; + + mnt_userns = mnt_user_ns(&mnt->mnt); + if (mnt_userns != &init_user_ns) + put_user_ns(mnt_userns); kfree_const(mnt->mnt_devname); #ifdef CONFIG_SMP free_percpu(mnt->mnt_pcp); @@ -1055,6 +1061,9 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root, mnt->mnt.mnt_flags &= ~(MNT_WRITE_HOLD|MNT_MARKED|MNT_INTERNAL); atomic_inc(&sb->s_active); + mnt->mnt.mnt_userns = mnt_user_ns(&old->mnt); + if (mnt->mnt.mnt_userns != &init_user_ns) + mnt->mnt.mnt_userns = get_user_ns(mnt->mnt.mnt_userns); mnt->mnt.mnt_sb = sb; mnt->mnt.mnt_root = dget(root); mnt->mnt_mountpoint = mnt->mnt.mnt_root; diff --git a/include/linux/fs.h b/include/linux/fs.h index fd47deea7c17..fd0b80e6361d 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -39,6 +39,7 @@ #include <linux/fs_types.h> #include <linux/build_bug.h> #include <linux/stddef.h> +#include <linux/mount.h> #include <asm/byteorder.h> #include <uapi/linux/fs.h> @@ -2231,6 +2232,7 @@ struct file_system_type { #define FS_HAS_SUBTYPE 4 #define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */ #define FS_DISALLOW_NOTIFY_PERM 16 /* Disable fanotify permission events */ +#define FS_ALLOW_IDMAP 32 /* FS has been updated to handle vfs idmappings. */ #define FS_THP_SUPPORT 8192 /* Remove once all fs converted */ #define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */ int (*init_fs_context)(struct fs_context *); @@ -2517,6 +2519,10 @@ struct filename { }; static_assert(offsetof(struct filename, iname) % sizeof(long) == 0); +static inline struct user_namespace *file_mnt_user_ns(struct file *file) +{ + return mnt_user_ns(file->f_path.mnt); +} extern long vfs_truncate(const struct path *, loff_t); extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs, struct file *filp); diff --git a/include/linux/mount.h b/include/linux/mount.h index aaf343b38671..52de25e08319 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -72,8 +72,14 @@ struct vfsmount { struct dentry *mnt_root; /* root of the mounted tree */ struct super_block *mnt_sb; /* pointer to superblock */ int mnt_flags; + struct user_namespace *mnt_userns; } __randomize_layout; +static inline struct user_namespace *mnt_user_ns(const struct vfsmount *mnt) +{ + return mnt->mnt_userns; +} + struct file; /* forward dec */ struct path; -- 2.30.0
next prev parent reply other threads:[~2021-01-21 13:21 UTC|newest] Thread overview: 163+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-21 13:19 [PATCH v6 00/40] idmapped mounts Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` Christian Brauner [this message] 2021-01-21 13:19 ` [PATCH v6 01/40] mount: attach mappings to mounts Christian Brauner 2021-01-21 13:19 ` [PATCH v6 02/40] fs: add id translation helpers Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-03-13 0:05 ` Vivek Goyal 2021-03-13 0:05 ` Vivek Goyal 2021-03-13 14:31 ` Christian Brauner 2021-03-14 22:02 ` Vivek Goyal 2021-03-15 8:40 ` Christoph Hellwig 2021-01-21 13:19 ` [PATCH v6 03/40] fs: add file and path permissions helpers Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 2:55 ` James Morris 2021-01-22 2:55 ` James Morris 2021-01-21 13:19 ` [PATCH v6 04/40] capability: handle idmapped mounts Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 2:57 ` James Morris 2021-01-22 2:57 ` James Morris 2021-01-21 13:19 ` [PATCH v6 05/39] namei: make permission helpers idmapped mount aware Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 3:02 ` James Morris 2021-01-22 3:02 ` James Morris 2021-01-22 22:26 ` J. Bruce Fields 2021-01-22 22:26 ` J. Bruce Fields 2021-01-23 13:09 ` Christian Brauner 2021-01-23 13:09 ` Christian Brauner 2021-01-24 22:18 ` J. Bruce Fields 2021-01-24 22:18 ` J. Bruce Fields 2021-01-24 22:44 ` Christian Brauner 2021-01-24 22:44 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 06/40] inode: make init and " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 3:10 ` James Morris 2021-01-22 3:10 ` James Morris 2021-01-21 13:19 ` [PATCH v6 07/40] attr: handle idmapped mounts Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 08/40] acl: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 09/40] xattr: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 3:21 ` James Morris 2021-01-22 3:21 ` James Morris 2021-01-21 13:19 ` [PATCH v6 10/40] commoncap: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 3:27 ` James Morris 2021-01-22 3:27 ` James Morris 2021-01-21 13:19 ` [PATCH v6 11/40] stat: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 3:28 ` James Morris 2021-01-22 3:28 ` James Morris 2021-01-21 13:19 ` [PATCH v6 12/40] namei: handle idmapped mounts in may_*() helpers Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 3:47 ` James Morris 2021-01-22 3:47 ` James Morris 2021-01-21 13:19 ` [PATCH v6 13/40] namei: introduce struct renamedata Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 14/40] namei: prepare for idmapped mounts Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 15/40] open: handle idmapped mounts in do_truncate() Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 17:20 ` Christoph Hellwig 2021-01-22 17:20 ` Christoph Hellwig 2021-01-21 13:19 ` [PATCH v6 16/40] open: handle idmapped mounts Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 4:14 ` James Morris 2021-01-22 4:14 ` James Morris 2021-01-22 17:21 ` Christoph Hellwig 2021-01-22 17:21 ` Christoph Hellwig 2021-01-21 13:19 ` [PATCH v6 17/40] af_unix: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 4:14 ` James Morris 2021-01-22 4:14 ` James Morris 2021-01-21 13:19 ` [PATCH v6 18/40] utimes: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 4:15 ` James Morris 2021-01-22 4:15 ` James Morris 2021-01-21 13:19 ` [PATCH v6 19/40] fcntl: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 4:17 ` James Morris 2021-01-22 4:17 ` James Morris 2021-01-21 13:19 ` [PATCH v6 20/40] init: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 17:23 ` Christoph Hellwig 2021-01-22 17:23 ` Christoph Hellwig 2021-01-21 13:19 ` [PATCH v6 21/40] ioctl: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 4:33 ` James Morris 2021-01-22 4:33 ` James Morris 2021-01-21 13:19 ` [PATCH v6 22/40] would_dump: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 23/40] exec: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 4:35 ` James Morris 2021-01-22 4:35 ` James Morris 2021-01-25 16:39 ` Eric W. Biederman 2021-01-25 16:39 ` Eric W. Biederman 2021-01-25 16:44 ` Christian Brauner 2021-01-25 16:44 ` Christian Brauner 2021-01-25 17:03 ` Serge E. Hallyn 2021-01-25 17:03 ` Serge E. Hallyn 2021-01-25 17:06 ` Christian Brauner 2021-01-25 17:06 ` Christian Brauner 2021-01-27 5:50 ` Serge E. Hallyn 2021-01-27 5:50 ` Serge E. Hallyn 2021-01-21 13:19 ` [PATCH v6 24/40] fs: make helpers idmap mount aware Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 25/40] apparmor: handle idmapped mounts Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 26/39] ima: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 27/40] ecryptfs: do not mount on top of " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 4:37 ` James Morris 2021-01-22 4:37 ` James Morris 2021-01-21 13:19 ` [PATCH v6 28/40] overlayfs: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 4:38 ` James Morris 2021-01-22 4:38 ` James Morris 2021-01-21 13:19 ` [PATCH v6 29/40] namespace: take lock_mount_hash() directly when changing flags Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 30/40] mount: make {lock,unlock}_mount_hash() static Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 31/40] namespace: only take read lock in do_reconfigure_mnt() Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 32/40] fs: split out functions to hold writers Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 33/40] fs: add attr_flags_to_mnt_flags helper Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 34/40] fs: add mount_setattr() Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 35/40] fs: introduce MOUNT_ATTR_IDMAP Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-22 17:33 ` Christoph Hellwig 2021-01-22 17:33 ` Christoph Hellwig 2021-01-22 17:34 ` Christoph Hellwig 2021-01-22 17:34 ` Christoph Hellwig 2021-01-21 13:19 ` [PATCH v6 36/40] tests: add mount_setattr() selftests Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 37/40] fat: handle idmapped mounts Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 38/40] ext4: support " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-21 13:19 ` [PATCH v6 39/40] xfs: " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-03-01 20:05 ` Darrick J. Wong 2021-03-01 20:05 ` Darrick J. Wong 2021-03-01 20:46 ` Christian Brauner 2021-03-01 20:46 ` Christian Brauner 2021-03-03 7:01 ` Christoph Hellwig 2021-03-03 7:01 ` Christoph Hellwig 2021-01-21 13:19 ` [PATCH v6 40/40] generic/622: add fstests for " Christian Brauner 2021-01-21 13:19 ` Christian Brauner 2021-01-27 5:40 ` [PATCH v6 00/40] " Serge E. Hallyn 2021-01-27 5:40 ` Serge E. Hallyn 2021-03-03 13:24 ` [PATCH v6 09/40] xattr: handle " David Howells 2021-03-03 13:24 ` David Howells 2021-03-03 14:05 ` Christian Brauner 2021-03-03 14:05 ` Christian Brauner 2021-03-03 14:45 ` David Howells 2021-03-03 14:45 ` David Howells 2021-03-03 16:15 ` Christian Brauner 2021-03-03 16:15 ` Christian Brauner
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