On Wed, 28 Feb 2024 at 15:41, Hou Tao wrote:
>
> From: Hou Tao
>
> Factor out more common methods for bounce buffer of fuse args:
>
> 1) virtio_fs_argbuf_setup_sg: set-up sgs for bounce buffer
> 2) virtio_fs_argbuf_copy_from_in_arg: copy each in-arg to bounce buffer
> 3)
On Wed, 28 Feb 2024 at 15:40, Hou Tao wrote:
> So instead of limiting both the values of max_read and max_write in
> kernel, capping the maximal length of kvec iter IO by using max_pages in
> fuse_direct_io() just like it does for ubuf/iovec iter IO. Now the max
> value for max_pages is 256, so
On Wed, 3 Jan 2024 at 11:58, Hou Tao wrote:
>
> From: Hou Tao
>
> When trying to insert a 10MB kernel module kept in a virtiofs with cache
> disabled, the following warning was reported:
>
> [ cut here ]
> WARNING: CPU: 2 PID: 439 at mm/page_alloc.c:4544 ..
>
On Wed, 10 Jan 2024 at 16:19, Ahelenia Ziemiańska
wrote:
> > We need to find an alternative to refusing splice, since this is not
> > going to fly, IMO.
> The alternative is to not hold the lock. See the references in the
> cover letter for why this wasn't done. IMO a potential slight perf
> hit
On Thu, 21 Dec 2023 at 04:09, Ahelenia Ziemiańska
wrote:
>
> Potentially-blocking splice_reads are allowed for normal filesystems
> like NFS because they're blessed by root.
>
> FUSE is commonly used suid-root, and allows anyone to trivially create
> a file that, when spliced from, will just
On Wed, Apr 14, 2021 at 2:22 PM Peng Tao wrote:
>
> > --- a/fs/fuse/file.c
> > +++ b/fs/fuse/file.c
> > @@ -1117,17 +1117,12 @@ static ssize_t fuse_send_write_pages(str
> > count = ia->write.out.size;
> > for (i = 0; i < ap->num_pages; i++) {
> > struct page *page =
On Thu, Mar 25, 2021 at 4:19 PM Vivek Goyal wrote:
>
>
> Hi,
>
> This is V2 of the patchset. Posted V1 here.
>
> https://lore.kernel.org/linux-fsdevel/20210319195547.427371-1-vgo...@redhat.com/
>
> Changes since V1:
>
> - Dropped the helper to determine if SGID should be cleared and open
>
On Wed, Apr 14, 2021 at 11:22 AM Baolin Wang
wrote:
>
>
>
> 在 2021/4/14 17:02, Miklos Szeredi 写道:
> > On Wed, Apr 14, 2021 at 10:42 AM Baolin Wang
> > wrote:
> >
> >> Sorry I missed this patch before, and I've tested this patch, it seems
> &g
On Wed, Apr 14, 2021 at 10:42 AM Baolin Wang
wrote:
> Sorry I missed this patch before, and I've tested this patch, it seems
> can solve the deadlock issue I met before.
Great, thanks for testing.
> But look at this patch in detail, I think this patch only reduced the
> deadlock window, but
On Tue, Apr 13, 2021 at 4:46 PM Matthew Wilcox wrote:
>
> On Thu, Mar 25, 2021 at 08:37:38PM +0100, Miklos Szeredi wrote:
> > @@ -107,6 +110,8 @@ fiemap: no
> > update_time: no
> > atomic_open: shared (exclusive if O_CREAT is set in open flags)
> > tmp
On Thu, Feb 11, 2021 at 7:09 PM Miklos Szeredi wrote:
>
> Pushed to
>
> git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git#fs_fuse_split
>
> There's still room for improvement, but I guess this can wait after
> MUSE integration.
Hi Richard,
Have you ha
On Mon, Apr 12, 2021 at 3:23 PM Baolin Wang
wrote:
>
> Hi Miklos,
>
> 在 2021/3/27 14:36, Baolin Wang 写道:
> > We can meet below deadlock scenario when writing back dirty pages, and
> > writing files at the same time. The deadlock scenario can be reproduced
> > by:
> >
> > - A writeback worker
On Wed, Mar 17, 2021 at 9:43 AM Luis Henriques wrote:
>
> When accidentally passing twice the same tag to qemu, kmemleak ended up
> reporting a memory leak in virtiofs. Also, looking at the log I saw the
> following error (that's when I realised the duplicated tag):
>
> virtiofs: probe of
Hi Al,
Fixed fileattr branch pushed to:
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git fileattr_v6
Thanks,
Miklos
On Mon, Apr 12, 2021 at 1:47 PM Stephen Rothwell wrote:
>
> Hi all,
>
> After merging the vfs tree, today's linux-next build (htmldocs) produced
> this warning:
On Tue, Mar 23, 2021 at 5:07 PM Miklos Szeredi wrote:
>
> Overlayfs does not cache ACL's to avoid double caching with all its
> problems. Instead it just calls the underlying filesystem's
> i_op->get_acl(), which will return the cached value, if possible.
>
> In r
oup_exit+0x135/0x380
>__do_sys_exit_group.isra.0+0x20/0x20
>__x64_sys_exit_group+0x3c/0x50
>do_syscall_64+0x45/0x70
>entry_SYSCALL_64_after_hwframe+0x44/0xae
> ...
> VFS: Busy inodes after unmount of overlay. Self-destruct in 5 seconds.
> Have a nice day...
v1:
- rebased on 5.12-rc1 (mnt_userns churn)
- fixed LSM hook on overlayfs
----
Miklos Szeredi (23):
vfs: add fileattr ops
ecryptfs: stack fileattr ops
ovl: stack fileattr ops
btrfs: convert to fileattr
ext2: conv
On Mon, Mar 29, 2021 at 11:14 AM Stephen Rothwell wrote:
>
> Hi all,
>
> After merging the overlayfs tree, today's linux-next build (htmldocs)
Hi Stephen,
I think you mixed up drivers/of/overlay.c with fs/overlay/.
Thanks,
Miklos
On Sun, Mar 28, 2021 at 8:09 PM Al Viro wrote:
>
> On Thu, Mar 25, 2021 at 08:37:40PM +0100, Miklos Szeredi wrote:
> > Add stacking for the fileattr operations.
> >
> > Add hack for calling security_file_ioctl() for now. Probably better to
> > have a pair of speci
On Sun, Mar 28, 2021 at 8:08 PM Al Viro wrote:
>
> On Thu, Mar 25, 2021 at 08:37:38PM +0100, Miklos Szeredi wrote:
>
> > +int vfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
> > +{
> > + struct inode *inode = d_inode(dentry);
> > +
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: "Theodore Ts'o"
---
fs/ext4/ext4.h | 12 +--
fs/ext4/file.c | 2 +
fs/ext4/ioctl.c | 208 ++--
fs/ext4/namei.c
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: David Sterba
---
fs/btrfs/ctree.h | 3 +
fs/btrfs/inode.c | 4 +
fs/btrfs/ioctl.c | 226 +++
3 files changed, 41 insertions
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Jaegeuk Kim
---
fs/f2fs/f2fs.h | 3 +
fs/f2fs/file.c | 216 +---
fs/f2fs/namei.c | 2 +
3 files changed, 43 insertions
all filesystems are converted, the fallback can be
removed.
32bit compat ioctls are now handled by the generic code as well.
Signed-off-by: Miklos Szeredi
---
Documentation/filesystems/locking.rst | 5 +
Documentation/filesystems/vfs.rst | 15 ++
fs/ioctl.c
Add stacking for the fileattr operations.
Add hack for calling security_file_ioctl() for now. Probably better to
have a pair of specific hooks for these operations.
Signed-off-by: Miklos Szeredi
---
fs/overlayfs/dir.c | 2 ++
fs/overlayfs/inode.c | 77
Add stacking for the fileattr operations.
Signed-off-by: Miklos Szeredi
Cc: Tyler Hicks
---
fs/ecryptfs/inode.c | 22 ++
1 file changed, 22 insertions(+)
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 18e9285fbb4c..7169ea873347 100644
--- a/fs/ecryptfs
Remove vfs_ioc_setflags_prepare(), vfs_ioc_fssetxattr_check() and
simple_fill_fsxattr(), which are no longer used.
Signed-off-by: Miklos Szeredi
Reviewed-by: Darrick J. Wong
---
fs/inode.c | 87 --
include/linux/fs.h | 12 ---
2 files
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Joel Becker
---
fs/ocfs2/file.c| 2 ++
fs/ocfs2/ioctl.c | 59 ++
fs/ocfs2/ioctl.h | 3 +++
fs/ocfs2/namei.c
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Richard Weinberger
---
fs/ubifs/dir.c | 2 ++
fs/ubifs/file.c | 2 ++
fs/ubifs/ioctl.c | 74
fs/ubifs/ubifs.h | 3
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Jan Kara
---
fs/reiserfs/file.c | 2 +
fs/reiserfs/ioctl.c| 121 +++--
fs/reiserfs/namei.c| 2 +
fs/reiserfs/reiserfs.h
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Ryusuke Konishi
---
fs/nilfs2/file.c | 2 ++
fs/nilfs2/ioctl.c | 61 ++-
fs/nilfs2/namei.c | 2 ++
fs/nilfs2/nilfs.h | 3
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Darrick J. Wong
---
fs/xfs/libxfs/xfs_fs.h | 4 -
fs/xfs/xfs_ioctl.c | 252 +
fs/xfs/xfs_ioctl.h | 11 ++
fs/xfs
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Matthew Garrett
---
fs/efivarfs/file.c | 77 -
fs/efivarfs/inode.c | 44 ++
2 files changed, 44
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Mike Marshall
---
fs/orangefs/file.c | 79 -
fs/orangefs/inode.c | 50
2 files changed, 50
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
---
fs/hfsplus/dir.c| 2 +
fs/hfsplus/hfsplus_fs.h | 14 ++-
fs/hfsplus/inode.c | 54 ++
fs/hfsplus/ioctl.c | 84
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Dave Kleikamp
---
fs/jfs/file.c | 6 +--
fs/jfs/ioctl.c | 105 ++--
fs/jfs/jfs_dinode.h | 7 ---
fs/jfs/jfs_inode.h
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Jan Kara
---
fs/ext2/ext2.h | 7 ++--
fs/ext2/file.c | 2 ++
fs/ext2/ioctl.c | 88 ++---
fs/ext2/namei.c | 2 ++
4 files
Use the fileattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Andreas Gruenbacher
---
fs/gfs2/file.c | 57 -
fs/gfs2/inode.c | 4
fs/gfs2/inode.h | 3 +++
3 files changed, 21
here:
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git#fileattr_v3
Miklos Szeredi (18):
vfs: add fileattr ops
ecryptfs: stack fileattr ops
ovl: stack fileattr ops
btrfs: convert to fileattr
ext2: convert to fileattr
ext4: convert to fileattr
f2fs: convert to fileattr
gfs2: conver
On Tue, Mar 23, 2021 at 1:24 AM Eric Biggers wrote:
> > +int vfs_miscattr_set(struct dentry *dentry, struct miscattr *ma)
> > +{
> > + struct inode *inode = d_inode(dentry);
> > + struct miscattr old_ma = {};
> > + int err;
> > +
> > + if (d_is_special(dentry))
> > +
On Wed, Mar 24, 2021 at 4:09 PM Connor Kuehl wrote:
>
> On 3/18/21 10:17 AM, Miklos Szeredi wrote:
> > I removed the conditional compilation and renamed the limit. Also made
> > virtio_fs_get_tree() bail out if it hit the WARN_ON(). Updated patch below.
>
> Hi Miklos,
On Tue, Feb 2, 2021 at 5:41 AM Huang Jianan via fuse-devel
wrote:
>
> We found the following deadlock situations in low memory scenarios:
> Thread A Thread B
> - __writeback_single_inode
> - fuse_write_inode
> - fuse_simple_request
>- __fuse_request_send
> -
On Wed, Mar 24, 2021 at 1:28 PM Al Viro wrote:
>
> On Wed, Mar 24, 2021 at 09:45:02AM +0100, Miklos Szeredi wrote:
> > Isn't structure initialization supposed to zero everything not
> > explicitly initialized?
>
> All fields, but not the padding...
Ah... while t
#syz fix: fuse: fix live lock in fuse_iget()
On Wed, Mar 24, 2021 at 6:03 AM Al Viro wrote:
>
> On Mon, Mar 22, 2021 at 03:48:59PM +0100, Miklos Szeredi wrote:
>
> minor nit: copy_fsxattr_{to,from}_user() might be better.
>
> > +int fsxattr_copy_to_user(const struct miscattr *ma, struct fsxattr __user
> > *u
eric case of a cache miss, only in case of
ACL_DONT_CACHE.
Reported-by: garyhuang
Signed-off-by: Miklos Szeredi
---
fs/9p/acl.c | 2 +-
fs/9p/acl.h | 2 +-
fs/bad_inode.c| 2 +-
fs/btrfs/acl.c| 2 +-
fs/btrfs/ctree.h
On Fri, Mar 19, 2021 at 4:06 PM Alessio Balsini wrote:
>
> With commit f8425c939663 ("fuse: 32-bit user space ioctl compat for fuse
> device") the matching constraints for the FUSE_DEV_IOC_CLONE ioctl
> command are relaxed, limited to the testing of command type and number.
> As Arnd noticed,
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Richard Weinberger
---
fs/ubifs/dir.c | 2 ++
fs/ubifs/file.c | 2 ++
fs/ubifs/ioctl.c | 74
fs/ubifs/ubifs.h | 3
Remove vfs_ioc_setflags_prepare(), vfs_ioc_fssetxattr_check() and
simple_fill_fsxattr(), which are no longer used.
Signed-off-by: Miklos Szeredi
---
fs/inode.c | 87 --
include/linux/fs.h | 12 ---
2 files changed, 99 deletions(-)
diff
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Jan Kara
---
fs/reiserfs/file.c | 2 +
fs/reiserfs/ioctl.c| 121 +++--
fs/reiserfs/namei.c| 2 +
fs/reiserfs/reiserfs.h
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Joel Becker
---
fs/ocfs2/file.c| 2 ++
fs/ocfs2/ioctl.c | 59 ++
fs/ocfs2/ioctl.h | 3 +++
fs/ocfs2/namei.c
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Darrick J. Wong
---
fs/xfs/libxfs/xfs_fs.h | 4 -
fs/xfs/xfs_ioctl.c | 316 -
fs/xfs/xfs_ioctl.h | 11 ++
fs/xfs
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Ryusuke Konishi
---
fs/nilfs2/file.c | 2 ++
fs/nilfs2/ioctl.c | 61 ++-
fs/nilfs2/namei.c | 2 ++
fs/nilfs2/nilfs.h | 3
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Dave Kleikamp
---
fs/jfs/file.c | 6 +--
fs/jfs/ioctl.c | 105 ++--
fs/jfs/jfs_dinode.h | 7 ---
fs/jfs/jfs_inode.h
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
---
fs/hfsplus/dir.c| 2 +
fs/hfsplus/hfsplus_fs.h | 14 ++-
fs/hfsplus/inode.c | 54 ++
fs/hfsplus/ioctl.c | 84
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: "Theodore Ts'o"
---
fs/ext4/ext4.h | 12 +--
fs/ext4/file.c | 2 +
fs/ext4/ioctl.c | 210 ++--
fs/ext4/namei.c
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Jan Kara
---
fs/ext2/ext2.h | 7 ++--
fs/ext2/file.c | 2 ++
fs/ext2/ioctl.c | 88 ++---
fs/ext2/namei.c | 2 ++
4 files
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Andreas Gruenbacher
---
fs/gfs2/file.c | 57 -
fs/gfs2/inode.c | 4
fs/gfs2/inode.h | 3 +++
3 files changed, 21
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Matthew Garrett
---
fs/efivarfs/file.c | 77 -
fs/efivarfs/inode.c | 44 ++
2 files changed, 44
Add stacking for the miscattr operations.
Add hack for calling security_file_ioctl() for now. Probably better to
have a pair of specific hooks for these operations.
Signed-off-by: Miklos Szeredi
---
fs/overlayfs/dir.c | 2 ++
fs/overlayfs/inode.c | 77
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: David Sterba
---
fs/btrfs/ctree.h | 3 +
fs/btrfs/inode.c | 4 +
fs/btrfs/ioctl.c | 249 +--
3 files changed, 52 insertions
Add stacking for the miscattr operations.
Signed-off-by: Miklos Szeredi
Cc: Tyler Hicks
---
fs/ecryptfs/inode.c | 22 ++
1 file changed, 22 insertions(+)
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 18e9285fbb4c..b7d18583c50f 100644
--- a/fs/ecryptfs
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Jaegeuk Kim
---
fs/f2fs/f2fs.h | 3 +
fs/f2fs/file.c | 213
fs/f2fs/namei.c | 2 +
3 files changed, 40 insertions
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Mike Marshall
---
fs/orangefs/file.c | 79 -
fs/orangefs/inode.c | 50
2 files changed, 50
all filesystems are converted, the fallback can be
removed.
32bit compat ioctls are now handled by the generic code as well.
Signed-off-by: Miklos Szeredi
---
Documentation/filesystems/locking.rst | 5 +
Documentation/filesystems/vfs.rst | 15 ++
fs/ioctl.c
on 5.12-rc1 (mnt_userns churn)
- fixed LSM hook on overlayfs
Git tree is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git#miscattr_v2
Thanks,
Miklos
---
Miklos Szeredi (18):
vfs: add miscattr ops
ecryptfs: stack miscattr ops
ovl: stack miscattr ops
btrfs
it is decomposed into a scattergather list and avoid violating section
2.6.5.3.1 of the virtio spec.
Signed-off-by: Connor Kuehl
Signed-off-by: Miklos Szeredi
---
fs/fuse/fuse_i.h|3 +++
fs/fuse/inode.c |3 ++-
fs/fuse/virtio_fs.c | 19 +--
3 files changed, 22 insert
[CC linux-mm]
On Thu, Mar 18, 2021 at 10:25 AM Luis Henriques wrote:
>
> (I thought Vlastimil was already on CC...)
>
> On Mon, Mar 15, 2021 at 11:06:59AM +, Matthew Wilcox wrote:
> > On Mon, Mar 15, 2021 at 09:47:45AM +, Luis Henriques wrote:
> > > On Fri, Mar 12, 2021 at 01:11:23PM
Hi Linus,
Please pull from:
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git
tags/fuse-fixes-5.12-rc4
Fix a deadlock and a couple of other bugs.
Thanks,
Miklos
Alessio Balsini (1):
fuse: 32-bit user space
On Mon, Mar 15, 2021 at 2:41 PM David Howells wrote:
>
> Miklos Szeredi wrote:
>
> > > (2) We can use the file position to represent the mnt_id and can jump to
> > > it directly - ie. using seek() to jump to a mount object by its ID.
> >
> > W
On Mon, Mar 15, 2021 at 1:07 PM David Howells wrote:
>
>
> Hi Al, Miklós,
>
> Can we consider replacing the "insert cursor" approach we're currently
> using for proc files to scan the current namespace's mount list[1] with
> something that uses an xarray of mounts indexed by mnt_id?
>
> This has
On Fri, Mar 12, 2021 at 9:51 AM Luis Henriques wrote:
>
> Hi Miklos,
>
> I've seen a bug report (5.10.16 kernel splat below) that seems to be
> reproducible in kernels as early as 5.4.
>
> The commit that caught my attention when looking at what was merged in 5.4
> was e4648309b85a ("fuse:
On Tue, Mar 2, 2021 at 5:26 PM Vivek Goyal wrote:
> > I still feel that it should probably be fixed in virtiofsd, given fuse
> > client
> > is expecting file server to take care of any change of mode (file
> > permission bits).
>
> Havid said that, there is one disadvantage of relying on server
On Fri, Feb 19, 2021 at 8:05 AM Peng Tao wrote:
>
> On Wed, Feb 17, 2021 at 9:41 PM Miklos Szeredi wrote:
> > What I think would be useful is to have an explicit
> > FUSE_DEV_IOC_PASSTHROUGH_CLOSE ioctl, that would need to be called
> > once the fuse server
On Mon, Jan 25, 2021 at 4:31 PM Alessio Balsini wrote:
>
> Enabling FUSE passthrough for mmap-ed operations not only affects
> performance, but has also been shown as mandatory for the correct
> functioning of FUSE passthrough.
> yanwu noticed [1] that a FUSE file with passthrough enabled may
On Mon, Jan 25, 2021 at 4:31 PM Alessio Balsini wrote:
>
> All the read and write operations performed on fuse_files which have the
> passthrough feature enabled are forwarded to the associated lower file
> system file via VFS.
>
> Sending the request directly to the lower file system avoids the
On Mon, Jan 25, 2021 at 4:31 PM Alessio Balsini wrote:
>
> Implement the FUSE passthrough ioctl that associates the lower
> (passthrough) file system file with the fuse_file.
>
> The file descriptor passed to the ioctl by the FUSE daemon is used to
> access the relative file pointer, that will be
On Mon, Jan 25, 2021 at 4:31 PM Alessio Balsini wrote:
>
> Expose the FUSE_PASSTHROUGH interface to user space and declare all the
> basic data structures and functions as the skeleton on top of which the
> FUSE passthrough functionality will be built.
>
> As part of this, introduce the new FUSE
On Mon, Jan 25, 2021 at 4:31 PM Alessio Balsini wrote:
>
> With a 64-bit kernel build the FUSE device cannot handle ioctl requests
> coming from 32-bit user space.
> This is due to the ioctl command translation that generates different
> command identifiers that thus cannot be used for direct
On Wed, Feb 10, 2021 at 12:16 PM Miklos Szeredi wrote:
>
> On Wed, Feb 10, 2021 at 11:12 AM Miklos Szeredi wrote:
>
> > But this is just a start. From the big structures still left in
> > CUSE only uses the following fields:
> >
> > fc: .minor, max_read, max
On Wed, Feb 10, 2021 at 11:12 AM Miklos Szeredi wrote:
> But this is just a start. From the big structures still left in
> CUSE only uses the following fields:
>
> fc: .minor, max_read, max_write, rcu, release, initialized, num_waiting
> fm: .fc
> ff: .fm
> fud: .fc
>
&
On Tue, Feb 9, 2021 at 10:39 PM Richard Weinberger wrote:
>
> Miklos,
>
> - Ursprüngliche Mail -
> > If you look at fuse_do_ioctl() it does variable length input and
> > output at the same time. I guess you need something similar to that.
>
> I'm not sure whether I understand correctly.
s trivial: create and alloc function for the
fm, and create accessor functions for the accessed fields.
Dealing with fc properly is probably a bit more involved, but does not
seem to be too compex at first glance.
Do you want to take a stab at cleaning this up further?
Thanks,
Miklos
commit 6bc38f
On Tue, Feb 9, 2021 at 6:46 PM Luca Risolia
wrote:
>
> On 09/02/21 17:50, Richard Weinberger wrote:
> > Well, I think having a generic mmap() for CUSE is hard to achieve.
>
> Hard or not it did work for what I can tell you. I was not the original
> author but I certainly contributed with testing
On Tue, Feb 9, 2021 at 4:10 PM Luca Risolia
wrote:
>
> Hi guys,
>
> a bit OT probably: is there any chance for you to also implement mmap()
> for CUSE? That would be much appreciated.
That's an old one.
No, I don't have plans, but patches are welcome, of course.
Thanks,
Miklos
On Mon, Jan 25, 2021 at 12:21 AM Richard Weinberger wrote:
>
> I'm happy to announce the first non-RFC version of this patch set.
> Over the xmas holidays I found some time to experiment with various userspace
> implementations of MTDs and gave the kernel side more fine-tuning.
>
> Rationale:
>
On Mon, Feb 8, 2021 at 3:02 PM Matthew Wilcox wrote:
>
> On Mon, Feb 08, 2021 at 09:25:22AM +0100, Miklos Szeredi wrote:
> > On Mon, Feb 8, 2021 at 3:00 AM Dave Chinner wrote:
> > >
> > > On Wed, Feb 03, 2021 at 04:03:06PM +0100, Miklos Szeredi wrote:
> >
On Mon, Feb 8, 2021 at 3:00 AM Dave Chinner wrote:
>
> On Wed, Feb 03, 2021 at 04:03:06PM +0100, Miklos Szeredi wrote:
> > On Wed, Feb 3, 2021 at 3:56 PM Matthew Wilcox wrote:
> >
> > > But let's talk specifics. What does CIFS need to contact the server for?
>
On Fri, Feb 5, 2021 at 12:49 AM Vivek Goyal wrote:
> > +int ovl_miscattr_set(struct dentry *dentry, struct miscattr *ma)
> > +{
> > + struct inode *inode = d_inode(dentry);
> > + struct dentry *upperdentry;
> > + const struct cred *old_cred;
> > + int err;
> > +
> > + err =
On Fri, Feb 5, 2021 at 4:25 PM Miklos Szeredi wrote:
>
> On Fri, Feb 5, 2021 at 12:49 AM Vivek Goyal wrote:
>
> > > +int ovl_miscattr_set(struct dentry *dentry, struct miscattr *ma)
> > > +{
> > > + struct inode *inode = d_inode(dentry);
&g
) bug.
- Clean up security xattr copy-up (related to a SELinux regression).
Thanks,
Miklos
---
Amir Goldstein (1):
ovl: skip getxattr of security labels
Liangyan (1):
ovl: fix dentry leak in ovl_get_redirect
Miklos Szeredi (4):
ovl: add warning on user_ns mismatch
ovl
On Wed, Feb 3, 2021 at 4:05 PM Jan Kara wrote:
[...]
> > +/**
> > + * miscattr_fill_xflags - initialize miscattr with xflags
> > + * @ma: miscattr pointer
> > + * @xflags: FS_XFLAG_* flags
> > + *
> > + * Set ->fsx_xflags, ->xattr_valid and ->flags (translated xflags). All
> > + *
On Wed, Feb 3, 2021 at 3:56 PM Matthew Wilcox wrote:
> But let's talk specifics. What does CIFS need to contact the server for?
> Could it be cached earlier?
I don't understand what CIFS is doing, and I don't really care. This
is the sort of operation where adding a couple of network
On Wed, Feb 3, 2021 at 3:28 PM Matthew Wilcox wrote:
>
> On Wed, Feb 03, 2021 at 03:13:29PM +0100, Miklos Szeredi wrote:
> > On Wed, Feb 3, 2021 at 2:58 PM Matthew Wilcox wrote:
> >
> > > Network filesystems frequently need to use the credentials attached to
&
On Wed, Feb 3, 2021 at 2:58 PM Matthew Wilcox wrote:
> Network filesystems frequently need to use the credentials attached to
> a struct file in order to communicate with the server. There's no point
> fighting this reality.
IDGI. Credentials can be taken from the file and from the task. In
On Wed, Feb 3, 2021 at 2:08 PM Matthew Wilcox wrote:
>
> On Wed, Feb 03, 2021 at 01:40:54PM +0100, Miklos Szeredi wrote:
> > This series adds the infrastructure and conversion of filesystems to the
> > new API.
> >
> > Two filesystems are not converted:
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Jaegeuk Kim
---
fs/f2fs/f2fs.h | 2 +
fs/f2fs/file.c | 212
fs/f2fs/namei.c | 2 +
3 files changed, 38 insertions
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Matthew Garrett
---
fs/efivarfs/file.c | 77 -
fs/efivarfs/inode.c | 43 +
2 files changed, 43
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
Cc: Darrick J. Wong
---
fs/xfs/libxfs/xfs_fs.h | 4 -
fs/xfs/xfs_ioctl.c | 294 -
fs/xfs/xfs_ioctl.h | 10 ++
fs/xfs
Use the miscattr API to let the VFS handle locking, permission checking and
conversion.
Signed-off-by: Miklos Szeredi
---
fs/hfsplus/dir.c| 2 +
fs/hfsplus/hfsplus_fs.h | 13 +--
fs/hfsplus/inode.c | 53 ++
fs/hfsplus/ioctl.c | 84
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