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When metadata directories are enabled, the rt and quota inodes are no
longer pointed to by the superblock, so it doesn't make sense to check
these.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Enhance the inode link count online fsck code alter their behavior when
they detect metadata directory tree roots, just like they do for the
regular root directory.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Teach online scrub about the metadata directory tree.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Make a report to the health monitoring subsystem any time we encounter
something in the metadata directory tree that looks like corruption.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Add a few helper functions so that it's possible to allocate
xfs_imeta_path objects dynamically, along with dynamically allocated
path components. Eventually we're going to want to support paths of the
form "/realtime/$rtgroup.rmap", and this is necessary for that.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Allow the V5 bulkstat ioctl to return information about metadata
directory files so that xfs_scrub can find and scrub them, since they
are otherwise ordinary directories.
(Metadata files of course require per-file scrub code and hence do not
need exposure.)
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Advertise the existence of the metadata directory feature; this will be
used by scrub to decide if it needs to scan the metadir too.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Metadata inodes are private files and therefore cannot be exposed to
userspace. This means no bulkstat, no open-by-handle, no linking them
into the directory tree, and no feeding them to LSMs. As such, we mark
them S_PRIVATE, which stops all that.
While we're at it, put them in a separate lockdep class so that it won't
get confused by "recursive" i_rwsem locking such as what happens when we
write to a rt file and need to allocate from the rt bitmap file.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Ideally, we'd put all the metadata inodes in one place if we could, so
that the metadata all stay reasonably close together instead of
spreading out over the disk. Furthermore, if the log is internal we'd
probably prefer to keep the metadata near the log. Therefore, disable
AGI rotoring for metadata inode allocations.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Since xfs_imeta_create can create new metadata files arbitrarily deep in
the metadata directory tree, we must supply a function that can ensure
that all directories in a path exist, and call it before the quota
functions create the quota inodes.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Plumb in the bits we need to look up metadata inode numbers from the
metadata inode directory and save them back.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Add checks for the metadata inode flag so that we don't ever leak
metadata inodes out to userspace, and we don't ever try to read a
regular inode as metadata.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Convert the magic metadata inode lookup keys to use actual strings
for paths.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Load the metadata directory root inode into memory at mount time and
release it at unmount time. We also make sure that the obsolete inode
pointers in the superblock are not logged or read from the superblock.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Update the new metadata inode transaction reservations to handle
metadata directories if that feature is enabled.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Define the on-disk layout and feature flags for the metadata inode
directory feature.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create a xfs_iget_meta function for metadata inodes to ensure that we
always check that the inobt thinks a metadata inode is in use.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Convert all open-coded sb metadata inode pointer logging to use
xfs_imeta_log.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Refactor the group and project quota inode pointer switcheroo that
happens only on v4 filesystems into a separate function prior to
enhancing the xfs_qm_qino_alloc function.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create transaction reservation types and block reservation helpers to
help us calculate transaction requirements. Right now the reservations
are the same as always; we're just separating the symbols for a future
patch.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create some helper routines to get and set metadata inode numbers
instead of open-coding them throughout xfs.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Currently, the XFS_SB_CRC_OFF macro uses the incore superblock struct
(xfs_sb) to compute the address of sb_crc within the ondisk superblock
struct (xfs_dsb). This is a landmine if we ever change the layout of
the incore superblock (as we're about to do), so redefine the macro
to use xfs_dsb to compute the layout of xfs_dsb.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Get rid of the largely pointless xfs_cross_rename now that we've
refactored its parent.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create a new libxfs function to rename two directory entries. The
upcoming metadata directory feature will need this to replace a metadata
inode directory entry.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create a new libxfs function to exchange two directory entries.
The upcoming metadata directory feature will need this to replace a
metadata inode directory entry.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create a new libxfs function to remove a (name, inode) entry from a
directory. The upcoming metadata directory feature will need this to
create a metadata directory tree.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create a libxfs helper function that marks an inode free on disk.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create a new libxfs function to link an existing inode into a directory.
The upcoming metadata directory feature will need this to create a
metadata directory tree.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create a new libxfs function to link a newly created inode into a
directory. The upcoming metadata directory feature will need this to
create a metadata directory tree.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Move xfs_bumplink and xfs_droplink to libxfs.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Move xfs_iunlink and xfs_iunlink_remove to libxfs.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Create a helper that calls dqalloc to allocate and grab a reference to
dquots for the user, group, and project ids listed in an icreate
structure. This simplifies the creat-related dqalloc callsites
scattered around the code base.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Move the initialization of the xfs_icreate_args structure out of
xfs_create and xfs_create_tempfile into their callers so that we can set
the new inode's attributes in one place and pass that through instead of
open coding the collection of attributes all over the code.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Move all the code that initializes a new inode's attributes from the
icreate_args structure and the parent directory into libxfs.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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There are two parts to initializing a newly allocated inode: setting up
the incore structures, and initializing the new inode core based on the
parent inode and the current user's environment. The initialization
code is not specific to the kernel, so we would like to share that with
userspace by hoisting it to libxfs. Therefore, split xfs_icreate into
separate functions to prepare for the next few patches.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Use xfs_trans_ichgtime to set the inode times when allocating an inode,
instead of open-coding them here.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Enable xfs_trans_ichgtime to change the inode access time so that we can
use this function to set inode times when allocating inodes instead of
open-coding it.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Callers that want to create an inode currently pass all possible file
attribute values for the new inode into xfs_init_new_inode as ten
separate parameters. This causes two code maintenance issues: first, we
have large multi-line call sites which programmers must read carefully
to make sure they did not accidentally invert a value. Second, all
three file id parameters must be passed separately to the quota
functions; any discrepancy results in quota count errors.
Clean this up by creating a new icreate_args structure to hold all this
information, some helpers to initialize them properly, and make the
callers pass this structure through to the creation function, whose name
we shorten to xfs_icreate. This eliminates the issues, enables us to
keep the inode init code in sync with userspace via libxfs, and is
needed for future metadata directory tree management.
(A subsequent cleanup will also fix the quota alloc calls.)
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Move the project id get and set functions into libxfs.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Hoist the inode flag conversion functions into libxfs so that we can
keep them in sync. Do this by creating a new xfs_inode_util.c file in
libxfs.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Move the extent size helpers to xfs_bmap.c in libxfs since they're used
there already.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Move these inode predicate functions to xfs_inode.[ch] since they're not
reflink functions.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Teach the AGI repair code to rebuild the unlinked buckets and lists.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Save ~460 bytes of stack space by moving all the repair context to a
heap object. We're going to add even more context data in the next
patch, which is why we really need to do this now.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Look for corruptions in the AGI unlinked bucket chains.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Alter the definition of i_prev_unlinked slightly to make it more obvious
when an inode with 0 link count is not part of the iunlink bucket lists
rooted in the AGI. An upcoming enhancement to the online AGI fsck code
will need to make this distinction to check and rebuild the AGI unlinked
buckets.
This distinction is necessary because it is not sufficient to check
xfs_inode.i_nlink to decide if an inode is on the unlinked list.
Updates to i_nlink can happen while holding only ILOCK_EXCL, but updates
to an inode's position in the AGI unlinked list requires both ILOCK_EXCL
and the AGI buffer lock.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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If a symbolic link target looks bad, try to sift through the rubble to
find as much of the target buffer that we can, and stage a new target
(short or remote format as needed) in a temporary file and use the
atomic extent swapping mechanism to commit the results.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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When the orphanage adopts a file, that file becomes a child of the
orphanage. The dentry cache may have entries for the orphanage
directory and the name we've chosen, so (1) make sure we abort if the
dcache has a positive entry because something's not right; and (2)
invalidate and purge negative dentries if the adoption goes through.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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If we encounter an inode with a nonzero link count but zero observed
links, move it to the orphanage.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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If we can't find a parent for a file, move it to the orphanage.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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