d_make_root will call iput on failure, so we
shouldn't try to do that ourselves.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 77923821
Change-Id: I1abb4afb0f894ab917b7c6be8c833676f436beb7
When an sdcardfs dentry is destroyed, it may not yet
have its fsdata initialized. It must be checked before
we try to access the paths in its private data.
Additionally, when cleaning up the superblock after
a failure, we don't have our sb private data, so
check for that case.
Bug: 77923821
Change-Id: I89caf6e121ed86480b42024664453fe0031bbcf3
Signed-off-by: Daniel Rosenberg <drosen@google.com>
If the top is changed while we're attempting to use it, it's
possible that the reference will be put while we are in the
process of grabbing a reference.
Now we grab a spinlock to protect grabbing our reference count.
Additionally, we now set the inode_info's top value to point to
it's own data when initializing, which makes tracking changes
easier.
Change-Id: If15748c786ce4c0480ab8c5051a92523aff284d2
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Moving default_normal from mount info to superblock info
as it doesn't need to change between mount points.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 72158116
Change-Id: I16c6a0577c601b4f7566269f7e189fcf697afd4e
The default_normal option causes mounts with the gid set to
AID_SDCARD_RW to have user specific gids, as in the normal case.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Change-Id: I9619b8ac55f41415df943484dc8db1ea986cef6f
Bug: 64672411
This moves the code to adjust the gid/uid of lower filesystem
files under the mount flag derive_gid.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Change-Id: I44eaad4ef67c7fcfda3b6ea3502afab94442610c
Bug: 63245673
Use the VFS mount_nodev instead of customized mount_nodev_with_options
and fix generic_shutdown_super to kill_anon_super because of set_anon_super
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Change-Id: Ibe46647aa2ce49d79291aa9d0295e9625cfccd80
Move top, and the associated data, to its own struct.
This way, we can properly track refcounts on top
without interfering with the inode's accounting.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 38045152
Change-Id: I1968e480d966c3f234800b72e43670ca11e1d3fd
This fixes various spacing and bracket related issues
pointed out by checkpatch.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 35331000
Change-Id: I6e248833a7a04e3899f3ae9462d765cfcaa70c96
This switches sdcardfs over to using permission2.
Instead of mounting several sdcardfs instances onto
the same underlaying directory, you bind mount a
single mount several times, and remount with the
options you want. These are stored in the private
mount data, allowing you to maintain the same tree,
but have different permissions for different mount
points.
Warning functions have been added for permission,
as it should never be called, and the correct
behavior is unclear.
Change-Id: I841b1d70ec60cf2b866fa48edeb74a0b0f8334f5
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Adds support for mount2, remount2, and the functions
to allocate/clone/copy the private data
The next patch will switch over to actually using it.
Change-Id: I8a43da26021d33401f655f0b2784ead161c575e3
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Adding packages to the package list and moving files
takes a large amount of locks, and is currently a
heavy operation. This adds a 'top' field to the
inode_info, which points to the inode for the top
most directory whose owner you would like to match.
On permission checks and get_attr, we look up the
owner based on the information at top. When we change
a package mapping, we need only modify the information
in the corresponding top inode_info's. When renaming,
we must ensure top is set correctly in all children.
This happens when an app specific folder gets moved
outside of the folder for that app.
Change-Id: Ib749c60b568e9a45a46f8ceed985c1338246ec6c
Signed-off-by: Daniel Rosenberg <drosen@google.com>
CONFIG_SDCARD_FS_CI_SEARCH only guards a define for
LOOKUP_CASE_INSENSITIVE, which is never used in the
kernel. Remove both, along with the option matching
that supports it.
Change-Id: I363a8f31de8ee7a7a934d75300cc9ba8176e2edf
Signed-off-by: Daniel Rosenberg <drosen@google.com>
In M, the workings of sdcardfs were changed significantly.
This brings sdcardfs into line with the changes.
Change-Id: I10e91a84a884c838feef7aa26c0a2b21f02e052e
Only included the source code as is for kernel 3.0. Following patches
take care of porting this file system to version 3.10.
Change-Id: I09e76db77cd98a059053ba5b6fd88572a4b75b5b
Signed-off-by: Daniel Campello <campello@google.com>
