kernel.git/fs/udf/namei.c, branch linux-4.6.y

udf: Use separate buffer for copying split names

2016-02-09T12:05:23Z

Code in udf_find_entry() and udf_readdir() used the same buffer for storing filename that was split among blocks and for the resulting filename in utf8. This worked because udf_get_filename() first internally copied the name into a different buffer and only then performed a conversion into the destination buffer. However we want to get rid of intermediate buffers so use separate buffer for converted name and name split between blocks so that we don't have the same source and destination buffer when converting split names. Signed-off-by: Jan Kara

udf: Adjust UDF_NAME_LEN to better reflect actual restrictions

2016-02-09T12:05:23Z

Actual name length restriction is 254 bytes, this is used in 'ustr' structure, and this is what fits into UDF File Ident structures. And in most cases the constant is used as UDF_NAME_LEN-2. So, it's better to just modify the constant to make it closer to reality. Also, in some cases it's useful to have a separate constant for the maximum length of file name field in CS0 encoding in UDF File Ident structures. Also, remove the unused UDF_PATH_LEN constant. Signed-off-by: Andrew Gabbasov Signed-off-by: Jan Kara

udf: Parameterize output length in udf_put_filename

2016-02-09T12:05:23Z

Make the desired output length a parameter rather than have it hard-coded to UDF_NAME_LEN. Although all call sites still have this length the same, this parameterization will make the function more universal and also consistent with udf_get_filename. Signed-off-by: Andrew Gabbasov Signed-off-by: Jan Kara

don't put symlink bodies in pagecache into highmem

2015-12-09T03:41:36Z

kmap() in page_follow_link_light() needed to go - allowing to hold an arbitrary number of kmaps for long is a great way to deadlocking the system. new helper (inode_nohighmem(inode)) needs to be used for pagecache symlinks inodes; done for all in-tree cases. page_follow_link_light() instrumented to yell about anything missed. Signed-off-by: Al Viro

udf: don't duplicate page_symlink_inode_operations

2015-12-07T01:43:26Z

Signed-off-by: Al Viro

UDF: support NFSv2 export

2015-05-18T09:23:08Z

The "fh_len" passed to ->fh_to_* is not guaranteed to be that same as that returned by encode_fh - it may be larger. With NFSv2, the filehandle is fixed length, so it may appear longer than expected and be zero-padded. So we must test that fh_len is at least some value, not exactly equal to it. Signed-off-by: NeilBrown Signed-off-by: Jan Kara

udf: Return error from udf_find_entry()

2015-05-18T09:23:07Z

Return appropriate error from udf_find_entry() instead of just NULL. That way we can distinguish the fact that some error happened when looking up filename (and return error to userspace) from the fact that we just didn't find the filename. Also update callers of udf_find_entry() accordingly. [JK: Improved udf_find_entry() documentation] Suggested-by: Jan Kara Signed-off-by: Fabian Frederick Signed-off-by: Jan Kara

udf: Return -ENOMEM when allocation fails in udf_get_filename()

2015-05-18T09:23:03Z

Return -ENOMEM when allocation fails in udf_get_filename(). Update udf_pc_to_char(), udf_readdir(), and udf_find_entry() to handle the error appropriately. This allows us to pass appropriate error to userspace instead of corrupting symlink contents by omitting some path elements. Signed-off-by: Fabian Frederick Signed-off-by: Jan Kara

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2015-04-27T00:22:07Z

Pull fourth vfs update from Al Viro: "d_inode() annotations from David Howells (sat in for-next since before the beginning of merge window) + four assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: RCU pathwalk breakage when running into a symlink overmounting something fix I_DIO_WAKEUP definition direct-io: only inc/dec inode->i_dio_count for file systems fs/9p: fix readdir() VFS: assorted d_backing_inode() annotations VFS: fs/inode.c helpers: d_inode() annotations VFS: fs/cachefiles: d_backing_inode() annotations VFS: fs library helpers: d_inode() annotations VFS: assorted weird filesystems: d_inode() annotations VFS: normal filesystems (and lustre): d_inode() annotations VFS: security/: d_inode() annotations VFS: security/: d_backing_inode() annotations VFS: net/: d_inode() annotations VFS: net/unix: d_backing_inode() annotations VFS: kernel/: d_inode() annotations VFS: audit: d_backing_inode() annotations VFS: Fix up some ->d_inode accesses in the chelsio driver VFS: Cachefiles should perform fs modifications on the top layer only VFS: AF_UNIX sockets should call mknod on the top layer only

VFS: normal filesystems (and lustre): d_inode() annotations

2015-04-15T19:06:57Z

that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: David Howells Signed-off-by: Al Viro