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path: root/fs/btrfs/sysfs.h
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2016-01-21btrfs: sysfs: introduce helper for syncing bits with sysfs filesDavid Sterba
The files under /sys/fs/UUID/features get out of sync with the actual incompat bits set for the filesystem if they change after mount. We're going to sync them and need a helper to do that. Signed-off-by: David Sterba <dsterba@suse.com>
2016-01-20btrfs: sysfs: fix typo in compat_ro attribute definitionDavid Sterba
Signed-off-by: David Sterba <dsterba@suse.com>
2015-09-29Btrfs: rename btrfs_kobj_rm_device to btrfs_sysfs_rm_device_linkAnand Jain
Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2015-09-29Btrfs: rename btrfs_kobj_add_device to btrfs_sysfs_add_device_linkAnand Jain
Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2015-05-27Btrfs: sysfs: btrfs_sysfs_remove_fsid() make it non staticAnand Jain
Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz>
2015-05-27Btrfs: sysfs: make btrfs_sysfs_add_device() non staticAnand Jain
Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz>
2015-05-27Btrfs: sysfs: make btrfs_sysfs_add_fsid() non staticAnand Jain
Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz>
2015-05-27Btrfs: sysfs btrfs_kobj_rm_device() pass fs_devices instead of fs_infoAnand Jain
since btrfs_kobj_rm_device() does nothing with fs_info Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz>
2015-05-27Btrfs: sysfs btrfs_kobj_add_device() pass fs_devices instead of fs_infoAnand Jain
btrfs_kobj_add_device() does not need fs_info any more. Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz>
2015-03-03btrfs: switch helper macros to static inlines in sysfs.hDavid Sterba
The conversion macros use nested container_of that leads to a warning fs/btrfs/sysfs.c: In function 'btrfs_feature_visible': fs/btrfs/sysfs.c:183:8: warning: declaration of '__mptr' shadows a previous local fs/btrfs/sysfs.c:183:8: warning: shadowed declaration is here Use of functions will add proper type checking. Signed-off-by: David Sterba <dsterba@suse.cz>
2014-09-17btrfs: code optimize: BTRFS_ATTR_RW could set the modeAnand Jain
BTRFS_ATTR_RW could set the mode and be inline with BTRFS_ATTR Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: Chris Mason <clm@fb.com>
2014-09-17btrfs: code optimize: BTRFS_ATTR could handle the modeAnand Jain
All that uses BTRFS_ATTR want mode to be set at 0444 so just do it at the define. And few spacing alignments. Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: Chris Mason <clm@fb.com>
2014-06-28btrfs: dev add should add its sysfs entryAnand Jain
we would need the device links to be created, when device is added. Signed-off-by: Anand Jain <Anand.Jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
2014-06-28btrfs: dev delete should remove sysfs entryAnand Jain
when we delete the device from the mounted btrfs, we would need its corresponding sysfs enty to be removed as well. Signed-off-by: Anand Jain <Anand.Jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
2014-03-10btrfs: add simple debugfs interfaceDavid Sterba
Help during debugging to export various interesting infromation and tunables without the need of extra mount options or ioctls. Usage: * declare your variable in sysfs.h, and include where you need it * define the variable in sysfs.c and make it visible via debugfs_create_TYPE Depends on CONFIG_DEBUG_FS. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Josef Bacik <jbacik@fb.com>
2014-01-28btrfs: publish allocation data in sysfsJeff Mahoney
While trying to debug ENOSPC issues, it's helpful to understand what the kernel's view of the available space is. We export this information via ioctl, but sysfs files are more easily used. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
2014-01-28btrfs: use feature attribute names to print better error messagesJeff Mahoney
Now that we have the feature name strings available in the kernel via the sysfs attributes, we can use them for printing better failure messages from the ioctl path. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
2014-01-28btrfs: add ability to change features via sysfsJeff Mahoney
This patch adds the ability to change (set/clear) features while the file system is mounted. A bitmask is added for each feature set for the support to set and clear the bits. A message indicating which bit has been set or cleared is issued when it's been changed and also when permission or support for a particular bit has been denied. Since the the attributes can now be writable, we need to introduce another struct attribute to hold the different permissions. If neither set or clear is supported, the file will have 0444 permissions. If either set or clear is supported, the file will have 0644 permissions and the store handler will filter out the write based on the bitmask. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
2014-01-28btrfs: publish per-super attributes in sysfsJeff Mahoney
This patch adds per-super attributes to sysfs. It doesn't publish any attributes yet, but does the proper lifetime handling as well as the basic infrastructure to add new attributes. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
2014-01-28btrfs: publish supported featured in sysfsJeff Mahoney
This patch adds the ability to publish supported features to sysfs under /sys/fs/btrfs/features. The files are module-wide and export which features the kernel supports. The content, for now, is just "0\n". Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com>
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