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Merge tag 'fs.idmapped.fixes.v6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping
Pull idmapping fixes from Christian Brauner:
- Since Seth joined as co-maintainer for idmapped mounts we decided to
use a shared git tree. Konstantin suggested we use vfs/idmapping.git
on kernel.org under the vfs/ namespace. So this updates the tree in
the maintainers file.
- Ensure that POSIX ACLs checking, getting, and setting works correctly
for filesystems mountable with a filesystem idmapping that want to
support idmapped mounts.
Since no filesystems mountable with an fs_idmapping do yet support
idmapped mounts there is no problem. But this could change in the
future, so add a check to refuse to create idmapped mounts when the
mounter is not privileged over the mount's idmapping.
- Check that caller is privileged over the idmapping that will be
attached to a mount.
Currently no FS_USERNS_MOUNT filesystems support idmapped mounts,
thus this is not a problem as only CAP_SYS_ADMIN in init_user_ns is
allowed to set up idmapped mounts. But this could change in the
future, so add a check to refuse to create idmapped mounts when the
mounter is not privileged over the mount's idmapping.
- Fix POSIX ACLs for ntfs3. While looking at our current POSIX ACL
handling in the context of some overlayfs work I went through a range
of other filesystems checking how they handle them currently and
encountered a few bugs in ntfs3.
I've sent this some time ago and the fixes haven't been picked up
even though the pull request for other ntfs3 fixes got sent after.
This should really be fixed as right now POSIX ACLs are broken in
certain circumstances for ntfs3.
* tag 'fs.idmapped.fixes.v6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping:
ntfs: fix acl handling
fs: require CAP_SYS_ADMIN in target namespace for idmapped mounts
MAINTAINERS: update idmapping tree
acl: handle idmapped mounts for idmapped filesystems
While looking at our current POSIX ACL handling in the context of some
overlayfs work I went through a range of other filesystems checking how they
handle them currently and encountered ntfs3.
The posic_acl_{from,to}_xattr() helpers always need to operate on the
filesystem idmapping. Since ntfs3 can only be mounted in the initial user
namespace the relevant idmapping is init_user_ns.
The posix_acl_{from,to}_xattr() helpers are concerned with translating between
the kernel internal struct posix_acl{_entry} and the uapi struct
posix_acl_xattr_{header,entry} and the kernel internal data structure is cached
filesystem wide.
Additional idmappings such as the caller's idmapping or the mount's idmapping
are handled higher up in the VFS. Individual filesystems usually do not need to
concern themselves with these.
The posix_acl_valid() helper is concerned with checking whether the values in
the kernel internal struct posix_acl can be represented in the filesystem's
idmapping. IOW, if they can be written to disk. So this helper too needs to
take the filesystem's idmapping.
Fixes: be71b5cba2 ("fs/ntfs3: Add attrib operations")
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: ntfs3@lists.linux.dev
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
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Merge tag 'ntfs3_for_6.0' of https://github.com/Paragon-Software-Group/linux-ntfs3
Pull ntfs3 updates from Konstantin Komarov:
- implement FALLOC_FL_INSERT_RANGE
- fix some logic errors
- fixed xfstests (tested on x86_64): generic/064 generic/213
generic/300 generic/361 generic/449 generic/485
- some dead code removed or refactored
* tag 'ntfs3_for_6.0' of https://github.com/Paragon-Software-Group/linux-ntfs3: (39 commits)
fs/ntfs3: uninitialized variable in ntfs_set_acl_ex()
fs/ntfs3: Remove unused function wnd_bits
fs/ntfs3: Make ni_ins_new_attr return error
fs/ntfs3: Create MFT zone only if length is large enough
fs/ntfs3: Refactoring attr_insert_range to restore after errors
fs/ntfs3: Refactoring attr_punch_hole to restore after errors
fs/ntfs3: Refactoring attr_set_size to restore after errors
fs/ntfs3: New function ntfs_bad_inode
fs/ntfs3: Make MFT zone less fragmented
fs/ntfs3: Check possible errors in run_pack in advance
fs/ntfs3: Added comments to frecord functions
fs/ntfs3: Fill duplicate info in ni_add_name
fs/ntfs3: Make static function attr_load_runs
fs/ntfs3: Add new argument is_mft to ntfs_mark_rec_free
fs/ntfs3: Remove unused mi_mark_free
fs/ntfs3: Fix very fragmented case in attr_punch_hole
fs/ntfs3: Fix work with fragmented xattr
fs/ntfs3: Make ntfs_fallocate return -ENOSPC instead of -EFBIG
fs/ntfs3: extend ni_insert_nonresident to return inserted ATTR_LIST_ENTRY
fs/ntfs3: Check reserved size for maximum allowed
...
The goto out calls kfree(value) on an uninitialized pointer. Just
return directly as the other error paths do.
Fixes: 460bbf2990 ("fs/ntfs3: Do not change mode if ntfs_set_ea failed")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Since the function wnd_bits is defined but not called in any file, it is
a useless function, and we delete it in view of the brevity of the code.
Remove some warnings found by running scripts/kernel-doc, which is
caused by using 'make W=1'.
fs/ntfs3/bitmap.c:54:19: warning: unused function 'wnd_bits' [-Wunused-function].
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
- Fix an accounting bug that made NR_FILE_DIRTY grow without limit
when running xfstests
- Convert more of mpage to use folios
- Remove add_to_page_cache() and add_to_page_cache_locked()
- Convert find_get_pages_range() to filemap_get_folios()
- Improvements to the read_cache_page() family of functions
- Remove a few unnecessary checks of PageError
- Some straightforward filesystem conversions to use folios
- Split PageMovable users out from address_space_operations into their
own movable_operations
- Convert aops->migratepage to aops->migrate_folio
- Remove nobh support (Christoph Hellwig)
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Merge tag 'folio-6.0' of git://git.infradead.org/users/willy/pagecache
Pull folio updates from Matthew Wilcox:
- Fix an accounting bug that made NR_FILE_DIRTY grow without limit
when running xfstests
- Convert more of mpage to use folios
- Remove add_to_page_cache() and add_to_page_cache_locked()
- Convert find_get_pages_range() to filemap_get_folios()
- Improvements to the read_cache_page() family of functions
- Remove a few unnecessary checks of PageError
- Some straightforward filesystem conversions to use folios
- Split PageMovable users out from address_space_operations into
their own movable_operations
- Convert aops->migratepage to aops->migrate_folio
- Remove nobh support (Christoph Hellwig)
* tag 'folio-6.0' of git://git.infradead.org/users/willy/pagecache: (78 commits)
fs: remove the NULL get_block case in mpage_writepages
fs: don't call ->writepage from __mpage_writepage
fs: remove the nobh helpers
jfs: stop using the nobh helper
ext2: remove nobh support
ntfs3: refactor ntfs_writepages
mm/folio-compat: Remove migration compatibility functions
fs: Remove aops->migratepage()
secretmem: Convert to migrate_folio
hugetlb: Convert to migrate_folio
aio: Convert to migrate_folio
f2fs: Convert to filemap_migrate_folio()
ubifs: Convert to filemap_migrate_folio()
btrfs: Convert btrfs_migratepage to migrate_folio
mm/migrate: Add filemap_migrate_folio()
mm/migrate: Convert migrate_page() to migrate_folio()
nfs: Convert to migrate_folio
btrfs: Convert btree_migratepage to migrate_folio
mm/migrate: Convert expected_page_refs() to folio_expected_refs()
mm/migrate: Convert buffer_migrate_page() to buffer_migrate_folio()
...
Function ni_ins_new_attr now returns ERR_PTR(err),
so we check it now in other functions like ni_expand_mft_list
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Added comments to code
Added new function run_clone to make a copy of run
Added done and undo labels for restoring after errors
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
There are repetitive steps in case of bad inode
This commit wraps them in function
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Added some comments in frecord.c for more context.
Also changed run_lookup to static because it's an internal function.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
In some cases xattr is too fragmented,
so we need to load it before writing.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
In some cases we need to return ENOSPC
Fixes xfstest generic/213
Fixes: 114346978c ("fs/ntfs3: Check new size for limits")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
ntfs_set_ea can fail with NOSPC, so we don't need to
change mode in this situation.
Fixes xfstest generic/449
Fixes: be71b5cba2 ("fs/ntfs3: Add attrib operations")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Handle the resident case with an explicit generic_writepages call instead
of using the obscure overload that makes mpage_writepages with a NULL
get_block do the same thing.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Improve static type checking by using enum req_op instead of u32 for
block layer request operations.
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-60-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Both submit_bh() and ll_rw_block() accept a request operation type and
request flags as their first two arguments. Micro-optimize these two
functions by combining these first two arguments into a single argument.
This patch does not change the behavior of any of the modified code.
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jan Kara <jack@suse.cz>
Acked-by: Song Liu <song@kernel.org> (for the md changes)
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-48-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
There is no need to initialize with NULL as it'll be rewritten later.
Signed-off-by: Li kunyu <kunyu@nfschina.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
The assignment to variable r is duplicated, the second assignment
is redundant and can be removed.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This error path needs to call up_write(&ni->file.run_lock) and do some
other clean up before returning.
Fixes: aa30eccb24 ("fs/ntfs3: Fallocate (FALLOC_FL_INSERT_RANGE) implementation")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
None of callers check the return value of ntfs_update_mftmirr(), so make
it return void to make code simpler.
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
If ntfs_fill_super() wasn't called then sbi->sb will be equal to NULL.
Code should check this ptr before dereferencing. Syzbot hit this issue
via passing wrong mount param as can be seen from log below
Fail log:
ntfs3: Unknown parameter 'iochvrset'
general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 1 PID: 3589 Comm: syz-executor210 Not tainted 5.18.0-rc3-syzkaller-00016-gb253435746d9 #0
...
Call Trace:
<TASK>
put_ntfs+0x1ed/0x2a0 fs/ntfs3/super.c:463
ntfs_fs_free+0x6a/0xe0 fs/ntfs3/super.c:1363
put_fs_context+0x119/0x7a0 fs/fs_context.c:469
do_new_mount+0x2b4/0xad0 fs/namespace.c:3044
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
Fixes: 82cae269cf ("fs/ntfs3: Add initialization of super block")
Reported-and-tested-by: syzbot+c95173762127ad76a824@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
If read_mapping_page() encounters an error, it returns an errno, not a
page with PageError set, so this is dead code.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Changed logic in ntfs_fallocate - more clear checks in beginning
instead of the middle of function and added FALLOC_FL_INSERT_RANGE.
Fixes xfstest generic/064
Fixes: 4342306f0f ("fs/ntfs3: Add file operations and implementation")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
The "vcn" variable is a 64 bit. The "log->clst_per_page" variable is a
u32. This means that the mask accidentally clears out the high 32 bits
when it was only supposed to clear some low bits. Fix this by adding a
cast to u64.
Fixes: b46acd6a6a ("fs/ntfs3: Add NTFS journal")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
For the readability and unity of the code, adjust the order
Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
Reviewed-by: Kari Argillander <kari.argillander@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This value is checked in indx_read, so it must be initialized
Fixes: 82cae269cf ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Yan Lei <chinayanlei2002@163.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Variable vcn is being assigned a value that is never read, it is
being re-assigned again in the initialization of a for-loop. The
assignment is redundant and can be removed.
Cleans up clang scan build warning:
fs/ntfs3/attrib.c:1176:7: warning: Value stored to 'vcn' during its
initialization is never read [deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Kari Argillander <kari.argillander@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Variable frame is assigned a value that is never read. The
assignment is redundant and can be removed. Cleans up the
clang-scan build warning:
fs/ntfs3/file.c:995:3: warning: Value stored to 'frame' is
never read [deadcode.DeadStores]
frame = pos >> frame_bits;
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
'new_free' has just been allocated by kmalloc() and is known to be not
NULL.
So this pointer can't be equal to a previous memory allocation.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
There is null pointer dereference because i_op == NULL.
The bug happens because we don't initialize i_op for records in $Extend.
Fixes: 82cae269cf ("fs/ntfs3: Add initialization of super block")
Reported-by: Liangbin Lian <jjm2473@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Now we save a copy of primary record for restoration.
Also now we remove all attributes from subrecords.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Pointer to options was freed twice on remount
Fixes xfstest generic/361
Fixes: 82cae269cf ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit makes function a bit more readable
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Merge tag 'ntfs3_for_5.19' of https://github.com/Paragon-Software-Group/linux-ntfs3
Pull ntfs3 updates from Konstantin Komarov:
- fix some memory leaks and panic
- fixed xfstests (tested on x86_64): generic/092 generic/099
generic/228 generic/240 generic/307 generic/444
- fix some typos, dead code, etc
* tag 'ntfs3_for_5.19' of https://github.com/Paragon-Software-Group/linux-ntfs3:
fs/ntfs3: provide block_invalidate_folio to fix memory leak
fs/ntfs3: Fix invalid free in log_replay
fs/ntfs3: Update valid size if -EIOCBQUEUED
fs/ntfs3: Check new size for limits
fs/ntfs3: Fix fiemap + fix shrink file size (to remove preallocated space)
fs/ntfs3: In function ntfs_set_acl_ex do not change inode->i_mode if called from function ntfs_init_acl
fs/ntfs3: Optimize locking in ntfs_save_wsl_perm
fs/ntfs3: Update i_ctime when xattr is added
fs/ntfs3: Restore ntfs_xattr_get_acl and ntfs_xattr_set_acl functions
fs/ntfs3: Keep preallocated only if option prealloc enabled
fs/ntfs3: Fix some memory leaks in an error handling path of 'log_replay()'
The ntfs3 filesystem lacks the 'invalidate_folio' method and it causes
memory leak. If you write to the filesystem and then unmount it, the
cached written data are not freed and they are permanently leaked.
Fixes: 7ba13abbd3 ("fs: Turn block_invalidatepage into block_invalidate_folio")
Reported-by: José Luis Lara Carrascal <manualinux@yahoo.es>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: stable@vger.kernel.org # v5.18
log_read_rst() returns ENOMEM error when there is not enough memory.
In this case, if info is returned without initialization,
it attempts to kfree the uninitialized info->r_page pointer. This patch
moves the memset initialization code to before log_read_rst() is called.
Reported-by: Gerald Lee <sundaywind2004@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
