Revision tags: v5.14.4, v5.10.65 |
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#
2f765205 |
| 14-Sep-2021 |
Maxime Ripard <maxime@cerno.tech> |
Merge drm/drm-next into drm-misc-next
Kickstart new drm-misc-next cycle.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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Revision tags: v5.14.3, v5.10.64 |
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c2f4954c |
| 10-Sep-2021 |
Thomas Gleixner <tglx@linutronix.de> |
Merge branch 'linus' into smp/urgent
Ensure that all usage sites of get/put_online_cpus() except for the struggler in drivers/thermal are gone. So the last user and the deprecated inlines can be rem
Merge branch 'linus' into smp/urgent
Ensure that all usage sites of get/put_online_cpus() except for the struggler in drivers/thermal are gone. So the last user and the deprecated inlines can be removed.
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Revision tags: v5.14.2, v5.10.63, v5.14.1, v5.10.62 |
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815409a1 |
| 02-Sep-2021 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'ovl-update-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs update from Miklos Szeredi:
- Copy up immutable/append/sync/noatime attributes (Amir Goldst
Merge tag 'ovl-update-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs update from Miklos Szeredi:
- Copy up immutable/append/sync/noatime attributes (Amir Goldstein)
- Improve performance by enabling RCU lookup.
- Misc fixes and improvements
The reason this touches so many files is that the ->get_acl() method now gets a "bool rcu" argument. The ->get_acl() API was updated based on comments from Al and Linus:
Link: https://lore.kernel.org/linux-fsdevel/CAJfpeguQxpd6Wgc0Jd3ks77zcsAv_bn0q17L3VNnnmPKu11t8A@mail.gmail.com/
* tag 'ovl-update-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: enable RCU'd ->get_acl() vfs: add rcu argument to ->get_acl() callback ovl: fix BUG_ON() in may_delete() when called from ovl_cleanup() ovl: use kvalloc in xattr copy-up ovl: update ctime when changing fileattr ovl: skip checking lower file's i_writecount on truncate ovl: relax lookup error on mismatch origin ftype ovl: do not set overlay.opaque for new directories ovl: add ovl_allow_offline_changes() helper ovl: disable decoding null uuid with redirect_dir ovl: consistent behavior for immutable/append-only inodes ovl: copy up sync/noatime fileattr flags ovl: pass ovl_fs to ovl_check_setxattr() fs: add generic helper for filling statx attribute flags
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#
87045e65 |
| 31-Aug-2021 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'for-5.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba: "The highlights of this round are integrations with fs-verity and idmap
Merge tag 'for-5.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba: "The highlights of this round are integrations with fs-verity and idmapped mounts, the rest is usual mix of minor improvements, speedups and cleanups.
There are some patches outside of btrfs, namely updating some VFS interfaces, all straightforward and acked.
Features:
- fs-verity support, using standard ioctls, backward compatible with read-only limitation on inodes with previously enabled fs-verity
- idmapped mount support
- make mount with rescue=ibadroots more tolerant to partially damaged trees
- allow raid0 on a single device and raid10 on two devices, degenerate cases but might be useful as an intermediate step during conversion to other profiles
- zoned mode block group auto reclaim can be disabled via sysfs knob
Performance improvements:
- continue readahead of node siblings even if target node is in memory, could speed up full send (on sample test +11%)
- batching of delayed items can speed up creating many files
- fsync/tree-log speedups - avoid unnecessary work (gains +2% throughput, -2% run time on sample load) - reduced lock contention on renames (on dbench +4% throughput, up to -30% latency)
Fixes:
- various zoned mode fixes
- preemptive flushing threshold tuning, avoid excessive work on almost full filesystems
Core:
- continued subpage support, preparation for implementing remaining features like compression and defragmentation; with some limitations, write is now enabled on 64K page systems with 4K sectors, still considered experimental - no readahead on compressed reads - inline extents disabled - disabled raid56 profile conversion and mount
- improved flushing logic, fixing early ENOSPC on some workloads
- inode flags have been internally split to read-only and read-write incompat bit parts, used by fs-verity
- new tree items for fs-verity - descriptor item - Merkle tree item
- inode operations extended to be namespace-aware
- cleanups and refactoring
Generic code changes:
- fs: new export filemap_fdatawrite_wbc
- fs: removed sync_inode
- block: bio_trim argument type fixups
- vfs: add namespace-aware lookup"
* tag 'for-5.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (114 commits) btrfs: reset replace target device to allocation state on close btrfs: zoned: fix ordered extent boundary calculation btrfs: do not do preemptive flushing if the majority is global rsv btrfs: reduce the preemptive flushing threshold to 90% btrfs: tree-log: check btrfs_lookup_data_extent return value btrfs: avoid unnecessarily logging directories that had no changes btrfs: allow idmapped mount btrfs: handle ACLs on idmapped mounts btrfs: allow idmapped INO_LOOKUP_USER ioctl btrfs: allow idmapped SUBVOL_SETFLAGS ioctl btrfs: allow idmapped SET_RECEIVED_SUBVOL ioctls btrfs: relax restrictions for SNAP_DESTROY_V2 with subvolids btrfs: allow idmapped SNAP_DESTROY ioctls btrfs: allow idmapped SNAP_CREATE/SUBVOL_CREATE ioctls btrfs: check whether fsgid/fsuid are mapped during subvolume creation btrfs: allow idmapped permission inode op btrfs: allow idmapped setattr inode op btrfs: allow idmapped tmpfile inode op btrfs: allow idmapped symlink inode op btrfs: allow idmapped mkdir inode op ...
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Revision tags: v5.14, v5.10.61, v5.10.60 |
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#
4a8b34af |
| 27-Jul-2021 |
Christian Brauner <christian.brauner@ubuntu.com> |
btrfs: handle ACLs on idmapped mounts
Make the ACL code idmapped mount aware. The POSIX default and POSIX access ACLs are the only ACLs other than some specific xattrs that take DAC permissions into
btrfs: handle ACLs on idmapped mounts
Make the ACL code idmapped mount aware. The POSIX default and POSIX access ACLs are the only ACLs other than some specific xattrs that take DAC permissions into account. On an idmapped mount they need to be translated according to the mount's userns. The main change is done to __btrfs_set_acl() which is responsible for translating POSIX ACLs to their final on-disk representation.
The btrfs_init_acl() helper does not need to take the idmapped mount into account since it is called in the context of file creation operations (mknod, create, mkdir, symlink, tmpfile) and is used for btrfs_init_inode_security() to copy POSIX default and POSIX access permissions from the parent directory. These ACLs need to be inherited unmodified from the parent directory. This is identical to what we do for ext4 and xfs.
Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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#
0cad6246 |
| 18-Aug-2021 |
Miklos Szeredi <mszeredi@redhat.com> |
vfs: add rcu argument to ->get_acl() callback
Add a rcu argument to the ->get_acl() callback to allow get_cached_acl_rcu() to call the ->get_acl() method in the next patch.
Signed-off-by: Miklos Sz
vfs: add rcu argument to ->get_acl() callback
Add a rcu argument to the ->get_acl() callback to allow get_cached_acl_rcu() to call the ->get_acl() method in the next patch.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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Revision tags: v5.10.53, v5.10.52, v5.10.51, v5.10.50, v5.10.49, v5.13, v5.10.46, v5.10.43, v5.10.42, v5.10.41, v5.10.40, v5.10.39, v5.4.119, v5.10.36, v5.10.35 |
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d0034a7a |
| 04-May-2021 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 5.13 merge window.
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Revision tags: v5.10.34, v5.4.116, v5.10.33, v5.12, v5.10.32 |
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b7f8f259 |
| 18-Apr-2021 |
Tyler Hicks <code@tyhicks.com> |
Merge tag 'v5.12-rc7' into ecryptfs/next
Required to pick up idmapped mount changes which changed some function parameters.
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Revision tags: v5.10.31, v5.10.30, v5.10.27 |
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5acac83b |
| 25-Mar-2021 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v5.12-rc4' into next
Sync up with the mainline to bring in newest APIs.
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Revision tags: v5.10.26, v5.10.25, v5.10.24 |
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f8bade6c |
| 16-Mar-2021 |
Maxime Ripard <maxime@cerno.tech> |
Merge drm/drm-next into drm-misc-next
Noralf needs some patches in 5.12-rc3, and we've been delaying the 5.12 merge due to the swap issue so it looks like a good time.
Signed-off-by: Maxime Ripard
Merge drm/drm-next into drm-misc-next
Noralf needs some patches in 5.12-rc3, and we've been delaying the 5.12 merge due to the swap issue so it looks like a good time.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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#
b470ebc9 |
| 14-Mar-2021 |
Thomas Gleixner <tglx@linutronix.de> |
Merge tag 'irqchip-fixes-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- More compatible strings for the Ingenic
Merge tag 'irqchip-fixes-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- More compatible strings for the Ingenic irqchip (introducing the JZ4760B SoC) - Select GENERIC_IRQ_MULTI_HANDLER on the ARM ep93xx platform - Drop all GENERIC_IRQ_MULTI_HANDLER selections from the irqchip Kconfig, now relying on the architecture to get it right - Drop the debugfs_file field from struct irq_domain, now that debugfs can track things on its own
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Revision tags: v5.10.23 |
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#
35bb28ec |
| 11-Mar-2021 |
Jani Nikula <jani.nikula@intel.com> |
Merge drm/drm-next into drm-intel-next
Sync up with upstream.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Revision tags: v5.10.22 |
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009ef05f |
| 08-Mar-2021 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
Merge remote-tracking branch 'torvalds/master' into perf/core
To pick up the fixes sent for v5.12 and continue development based on v5.12-rc2, i.e. without the swap on file bug.
This also gets a sl
Merge remote-tracking branch 'torvalds/master' into perf/core
To pick up the fixes sent for v5.12 and continue development based on v5.12-rc2, i.e. without the swap on file bug.
This also gets a slightly newer and better tools/perf/arch/arm/util/cs-etm.c patch version, using the BIT() macro, that had already been slated to v5.13 but ended up going to v5.12-rc1 on an older version.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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4c9f4865 |
| 08-Mar-2021 |
Tony Lindgren <tony@atomide.com> |
Merge branch 'fixes-rc2' into fixes
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Revision tags: v5.10.21, v5.10.20 |
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#
9b838a3c |
| 02-Mar-2021 |
Takashi Iwai <tiwai@suse.de> |
Merge tag 'tags/sound-sdw-kconfig-fixes' into for-linus
ALSA/ASoC/SOF/SoundWire: fix Kconfig issues
In January, Intel kbuild bot and Arnd Bergmann reported multiple issues with randconfig. This pat
Merge tag 'tags/sound-sdw-kconfig-fixes' into for-linus
ALSA/ASoC/SOF/SoundWire: fix Kconfig issues
In January, Intel kbuild bot and Arnd Bergmann reported multiple issues with randconfig. This patchset builds on Arnd's suggestions to
a) expose ACPI and PCI devices in separate modules, while sof-acpi-dev and sof-pci-dev become helpers. This will result in minor changes required for developers/testers, i.e. modprobe snd-sof-pci will no longer result in a probe. The SOF CI was already updated to deal with this module dependency change and introduction of new modules.
b) Fix SOF/SoundWire/DSP_config dependencies by moving the code required to detect SoundWire presence in ACPI tables to sound/hda.
Link: https://lore.kernel.org/r/20210302003125.1178419-1-pierre-louis.bossart@linux.intel.com
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Revision tags: v5.10.19, v5.4.101 |
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#
7d6beb71 |
| 23-Feb-2021 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull idmapped mounts from Christian Brauner: "This introduces idmapped mounts which has been in the
Merge tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull idmapped mounts from Christian Brauner: "This introduces idmapped mounts which has been in the making for some time. Simply put, different mounts can expose the same file or directory with different ownership. This initial implementation comes with ports for fat, ext4 and with Christoph's port for xfs with more filesystems being actively worked on by independent people and maintainers.
Idmapping mounts handle a wide range of long standing use-cases. Here are just a few:
- Idmapped mounts make it possible to easily share files between multiple users or multiple machines especially in complex scenarios. For example, idmapped mounts will be used in the implementation of portable home directories in systemd-homed.service(8) where they allow users to move their home directory to an external storage device and use it on multiple computers where they are assigned different uids and gids. This effectively makes it possible to assign random uids and gids at login time.
- It is possible to share files from the host with unprivileged containers without having to change ownership permanently through chown(2).
- It is possible to idmap a container's rootfs and without having to mangle every file. For example, Chromebooks use it to share the user's Download folder with their unprivileged containers in their Linux subsystem.
- It is possible to share files between containers with non-overlapping idmappings.
- Filesystem that lack a proper concept of ownership such as fat can use idmapped mounts to implement discretionary access (DAC) permission checking.
- They allow users to efficiently changing ownership on a per-mount basis without having to (recursively) chown(2) all files. In contrast to chown (2) changing ownership of large sets of files is instantenous with idmapped mounts. This is especially useful when ownership of a whole root filesystem of a virtual machine or container is changed. With idmapped mounts a single syscall mount_setattr syscall will be sufficient to change the ownership of all files.
- Idmapped mounts always take the current ownership into account as idmappings specify what a given uid or gid is supposed to be mapped to. This contrasts with the chown(2) syscall which cannot by itself take the current ownership of the files it changes into account. It simply changes the ownership to the specified uid and gid. This is especially problematic when recursively chown(2)ing a large set of files which is commong with the aforementioned portable home directory and container and vm scenario.
- Idmapped mounts allow to change ownership locally, restricting it to specific mounts, and temporarily as the ownership changes only apply as long as the mount exists.
Several userspace projects have either already put up patches and pull-requests for this feature or will do so should you decide to pull this:
- systemd: In a wide variety of scenarios but especially right away in their implementation of portable home directories.
https://systemd.io/HOME_DIRECTORY/
- container runtimes: containerd, runC, LXD:To share data between host and unprivileged containers, unprivileged and privileged containers, etc. The pull request for idmapped mounts support in containerd, the default Kubernetes runtime is already up for quite a while now: https://github.com/containerd/containerd/pull/4734
- The virtio-fs developers and several users have expressed interest in using this feature with virtual machines once virtio-fs is ported.
- ChromeOS: Sharing host-directories with unprivileged containers.
I've tightly synced with all those projects and all of those listed here have also expressed their need/desire for this feature on the mailing list. For more info on how people use this there's a bunch of talks about this too. Here's just two recent ones:
https://www.cncf.io/wp-content/uploads/2020/12/Rootless-Containers-in-Gitpod.pdf https://fosdem.org/2021/schedule/event/containers_idmap/
This comes with an extensive xfstests suite covering both ext4 and xfs:
https://git.kernel.org/brauner/xfstests-dev/h/idmapped_mounts
It covers truncation, creation, opening, xattrs, vfscaps, setid execution, setgid inheritance and more both with idmapped and non-idmapped mounts. It already helped to discover an unrelated xfs setgid inheritance bug which has since been fixed in mainline. It will be sent for inclusion with the xfstests project should you decide to merge this.
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 and this is verified in the testsuite.
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.
The user namespace the mount will be marked with can be specified by passing a file descriptor refering to the user namespace as an argument to the new mount_setattr() syscall together with the new MOUNT_ATTR_IDMAP flag. The system call follows the openat2() pattern of extensibility.
The following conditions must be met in order to create an idmapped mount:
- The caller must currently have the CAP_SYS_ADMIN capability in the user namespace the underlying filesystem has been mounted in.
- The underlying filesystem must support idmapped mounts.
- The mount must not already be idmapped. This also implies that the idmapping of a mount cannot be altered once it has been idmapped.
- The mount must be a detached/anonymous mount, i.e. it must have been created by calling open_tree() with the OPEN_TREE_CLONE flag and it must not already have been visible in the filesystem.
The last two points guarantee easier semantics for userspace and the kernel and make the implementation significantly simpler.
By default vfsmounts are marked with the initial user namespace and no behavioral or performance changes are observed.
The manpage with a detailed description can be found here:
https://git.kernel.org/brauner/man-pages/c/1d7b902e2875a1ff342e036a9f866a995640aea8
In order to support idmapped mounts, filesystems need to be changed and mark themselves with the FS_ALLOW_IDMAP flag in fs_flags. The patches to convert individual filesystem are not very large or complicated overall as can be seen from the included fat, ext4, and xfs ports. Patches for other filesystems are actively worked on and will be sent out separately. The xfstestsuite can be used to verify that port has been done correctly.
The mount_setattr() syscall is motivated independent of the idmapped mounts patches and it's been around since July 2019. One of the most valuable features of the new mount api is the ability to perform mounts based on file descriptors only.
Together with the lookup restrictions available in the openat2() RESOLVE_* flag namespace which we added in v5.6 this is the first time we are close to hardened and race-free (e.g. symlinks) mounting and path resolution.
While userspace has started porting to the new mount api to mount proper filesystems and create new bind-mounts it is currently not possible to change mount options of an already existing bind mount in the new mount api since the mount_setattr() syscall is missing.
With the addition of the mount_setattr() syscall we remove this last restriction and userspace can now fully port to the new mount api, covering every use-case the old mount api could. We also add the crucial ability to recursively change mount options for a whole mount tree, both removing and adding mount options at the same time. This syscall has been requested multiple times by various people and projects.
There is a simple tool available at
https://github.com/brauner/mount-idmapped
that allows to create idmapped mounts so people can play with this patch series. I'll add support for the regular mount binary should you decide to pull this in the following weeks:
Here's an example to a simple idmapped mount of another user's home directory:
u1001@f2-vm:/$ sudo ./mount --idmap both:1000:1001:1 /home/ubuntu/ /mnt
u1001@f2-vm:/$ ls -al /home/ubuntu/ total 28 drwxr-xr-x 2 ubuntu ubuntu 4096 Oct 28 22:07 . drwxr-xr-x 4 root root 4096 Oct 28 04:00 .. -rw------- 1 ubuntu ubuntu 3154 Oct 28 22:12 .bash_history -rw-r--r-- 1 ubuntu ubuntu 220 Feb 25 2020 .bash_logout -rw-r--r-- 1 ubuntu ubuntu 3771 Feb 25 2020 .bashrc -rw-r--r-- 1 ubuntu ubuntu 807 Feb 25 2020 .profile -rw-r--r-- 1 ubuntu ubuntu 0 Oct 16 16:11 .sudo_as_admin_successful -rw------- 1 ubuntu ubuntu 1144 Oct 28 00:43 .viminfo
u1001@f2-vm:/$ ls -al /mnt/ total 28 drwxr-xr-x 2 u1001 u1001 4096 Oct 28 22:07 . drwxr-xr-x 29 root root 4096 Oct 28 22:01 .. -rw------- 1 u1001 u1001 3154 Oct 28 22:12 .bash_history -rw-r--r-- 1 u1001 u1001 220 Feb 25 2020 .bash_logout -rw-r--r-- 1 u1001 u1001 3771 Feb 25 2020 .bashrc -rw-r--r-- 1 u1001 u1001 807 Feb 25 2020 .profile -rw-r--r-- 1 u1001 u1001 0 Oct 16 16:11 .sudo_as_admin_successful -rw------- 1 u1001 u1001 1144 Oct 28 00:43 .viminfo
u1001@f2-vm:/$ touch /mnt/my-file
u1001@f2-vm:/$ setfacl -m u:1001:rwx /mnt/my-file
u1001@f2-vm:/$ sudo setcap -n 1001 cap_net_raw+ep /mnt/my-file
u1001@f2-vm:/$ ls -al /mnt/my-file -rw-rwxr--+ 1 u1001 u1001 0 Oct 28 22:14 /mnt/my-file
u1001@f2-vm:/$ ls -al /home/ubuntu/my-file -rw-rwxr--+ 1 ubuntu ubuntu 0 Oct 28 22:14 /home/ubuntu/my-file
u1001@f2-vm:/$ getfacl /mnt/my-file getfacl: Removing leading '/' from absolute path names # file: mnt/my-file # owner: u1001 # group: u1001 user::rw- user:u1001:rwx group::rw- mask::rwx other::r--
u1001@f2-vm:/$ getfacl /home/ubuntu/my-file getfacl: Removing leading '/' from absolute path names # file: home/ubuntu/my-file # owner: ubuntu # group: ubuntu user::rw- user:ubuntu:rwx group::rw- mask::rwx other::r--"
* tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: (41 commits) xfs: remove the possibly unused mp variable in xfs_file_compat_ioctl xfs: support idmapped mounts ext4: support idmapped mounts fat: handle idmapped mounts tests: add mount_setattr() selftests fs: introduce MOUNT_ATTR_IDMAP fs: add mount_setattr() fs: add attr_flags_to_mnt_flags helper fs: split out functions to hold writers namespace: only take read lock in do_reconfigure_mnt() mount: make {lock,unlock}_mount_hash() static namespace: take lock_mount_hash() directly when changing flags nfs: do not export idmapped mounts overlayfs: do not mount on top of idmapped mounts ecryptfs: do not mount on top of idmapped mounts ima: handle idmapped mounts apparmor: handle idmapped mounts fs: make helpers idmap mount aware exec: handle idmapped mounts would_dump: handle idmapped mounts ...
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Revision tags: v5.10.18, v5.10.17, v5.11, v5.10.16, v5.10.15, v5.10.14 |
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#
549c7297 |
| 21-Jan-2021 |
Christian Brauner <christian.brauner@ubuntu.com> |
fs: make helpers idmap mount aware
Extend some inode methods with an additional user namespace argument. A filesystem that is aware of idmapped mounts will receive the user namespace the mount has b
fs: make helpers idmap mount aware
Extend some inode methods with an additional user namespace argument. A filesystem that is aware of idmapped mounts will receive the user namespace the mount has been marked with. This can be used for additional permission checking and also to enable filesystems to translate between uids and gids if they need to. We have implemented all relevant helpers in earlier patches.
As requested we simply extend the exisiting inode method instead of introducing new ones. This is a little more code churn but it's mostly mechanical and doesnt't leave us with additional inode methods.
Link: https://lore.kernel.org/r/20210121131959.646623-25-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>
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#
e65ce2a5 |
| 21-Jan-2021 |
Christian Brauner <christian.brauner@ubuntu.com> |
acl: handle idmapped mounts
The posix acl permission checking helpers determine whether a caller is privileged over an inode according to the acls associated with the inode. Add helpers that make it
acl: handle idmapped mounts
The posix acl permission checking helpers determine whether a caller is privileged over an inode according to the acls associated with the inode. Add helpers that make it possible to handle acls on idmapped mounts.
The vfs and the filesystems targeted by this first iteration make use of posix_acl_fix_xattr_from_user() and posix_acl_fix_xattr_to_user() to translate basic posix access and default permissions such as the ACL_USER and ACL_GROUP type according to the initial user namespace (or the superblock's user namespace) to and from the caller's current user namespace. Adapt these two helpers to handle idmapped mounts whereby we either map from or into the mount's user namespace depending on in which direction we're translating. Similarly, cap_convert_nscap() is used by the vfs to translate user namespace and non-user namespace aware filesystem capabilities from the superblock's user namespace to the caller's user namespace. Enable it to handle idmapped mounts by accounting for the mount's user namespace.
In addition the fileystems targeted in the first iteration of this patch series make use of the posix_acl_chmod() and, posix_acl_update_mode() helpers. Both helpers perform permission checks on the target inode. Let them handle idmapped mounts. These two helpers are called when posix acls are set by the respective filesystems to handle this case we extend the ->set() method to take an additional user namespace argument to pass the mount's user namespace down.
Link: https://lore.kernel.org/r/20210121131959.646623-9-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>
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Revision tags: v5.10, v5.8.17, v5.8.16, v5.8.15, v5.9, v5.8.14, v5.8.13, v5.8.12, v5.8.11, v5.8.10, v5.8.9, v5.8.8, v5.8.7, v5.8.6, v5.4.62, v5.8.5, v5.8.4, v5.4.61, v5.8.3, v5.4.60, v5.8.2, v5.4.59, v5.8.1, v5.4.58, v5.4.57, v5.4.56, v5.8, v5.7.12, v5.4.55, v5.7.11, v5.4.54, v5.7.10, v5.4.53, v5.4.52, v5.7.9, v5.7.8, v5.4.51, v5.4.50, v5.7.7, v5.4.49, v5.7.6, v5.7.5, v5.4.48, v5.7.4, v5.7.3, v5.4.47, v5.4.46, v5.7.2, v5.4.45, v5.7.1, v5.4.44, v5.7, v5.4.43, v5.4.42, v5.4.41, v5.4.40, v5.4.39, v5.4.38, v5.4.37, v5.4.36, v5.4.35, v5.4.34, v5.4.33, v5.4.32, v5.4.31, v5.4.30, v5.4.29, v5.6, v5.4.28, v5.4.27, v5.4.26, v5.4.25, v5.4.24, v5.4.23, v5.4.22, v5.4.21, v5.4.20, v5.4.19, v5.4.18, v5.4.17, v5.4.16, v5.5, v5.4.15, v5.4.14, v5.4.13, v5.4.12, v5.4.11, v5.4.10, v5.4.9, v5.4.8, v5.4.7, v5.4.6, v5.4.5, v5.4.4, v5.4.3, v5.3.15, v5.4.2, v5.4.1, v5.3.14, v5.4, v5.3.13, v5.3.12, v5.3.11, v5.3.10, v5.3.9, v5.3.8, v5.3.7, v5.3.6, v5.3.5, v5.3.4, v5.3.3, v5.3.2, v5.3.1, v5.3, v5.2.14, v5.3-rc8, v5.2.13, v5.2.12, v5.2.11, v5.2.10, v5.2.9, v5.2.8, v5.2.7, v5.2.6, v5.2.5, v5.2.4, v5.2.3, v5.2.2 |
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c39f2d9d |
| 19-Jul-2019 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare second round of input updates for 5.3 merge window.
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ecb41832 |
| 15-Jul-2019 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v5.2' into next
Sync up with mainline to resolve conflicts in iforce driver.
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Revision tags: v5.2.1 |
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59747372 |
| 11-Jul-2019 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 5.3 merge window.
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74acee30 |
| 09-Jul-2019 |
Jiri Kosina <jkosina@suse.cz> |
Merge branches 'for-5.2/fixes', 'for-5.3/doc', 'for-5.3/ish', 'for-5.3/logitech' and 'for-5.3/wacom' into for-linus
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Revision tags: v5.2, v5.1.16 |
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355a47ae |
| 26-Jun-2019 |
Maarten Lankhorst <maarten.lankhorst@linux.intel.com> |
Merge remote-tracking branch 'drm/drm-next' into drm-misc-next-fixes
Some fixes have been accidentally pushed to this, so I cannot fost-forward. Required to pull in the remove-fbcon-notifiers fixes.
Merge remote-tracking branch 'drm/drm-next' into drm-misc-next-fixes
Some fixes have been accidentally pushed to this, so I cannot fost-forward. Required to pull in the remove-fbcon-notifiers fixes.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
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Revision tags: v5.1.15, v5.1.14, v5.1.13, v5.1.12, v5.1.11, v5.1.10, v5.1.9, v5.1.8, v5.1.7 |
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860dbce3 |
| 02-Jun-2019 |
Yoshinori Sato <ysato@users.sourceforge.jp> |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
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Revision tags: v5.1.6 |
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2491b544 |
| 28-May-2019 |
Jani Nikula <jani.nikula@intel.com> |
Merge drm/drm-next into drm-intel-next-queued
Get the HDR dependencies originally merged via drm-misc. Sync up all i915 changes applied via other trees. And get v5.2-rc2 as the baseline.
Signed-off
Merge drm/drm-next into drm-intel-next-queued
Get the HDR dependencies originally merged via drm-misc. Sync up all i915 changes applied via other trees. And get v5.2-rc2 as the baseline.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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