linux.git/fs/udf/ialloc.c, branch v4.6

udf: saner calling conventions for udf_new_inode()

2014-09-04T19:37:41+00:00

Signed-off-by: Al Viro 
Signed-off-by: Jan Kara

udf: fix the udf_iget() vs. udf_new_inode() races

2014-09-04T19:37:41+00:00

Currently udf_iget() (triggered by NFS) can race with udf_new_inode()
leading to two inode structures with the same inode number:

nfsd: iget_locked() creates inode
nfsd: try to read from disk, block on that.
udf_new_inode(): allocate inode with that inumber
udf_new_inode(): insert it into icache, set it up and dirty
udf_write_inode(): write inode into buffer cache
nfsd: get CPU again, look into buffer cache, see nice and sane on-disk
  inode, set the in-core inode from it

Fix the problem by putting inode into icache in locked state (I_NEW set)
and unlocking it only after it's fully set up.

Signed-off-by: Al Viro 
Signed-off-by: Jan Kara

udf: Set i_generation field

2014-09-04T19:37:40+00:00

Currently UDF doesn't initialize i_generation in any way and thus NFS
can easily get reallocated inodes from stale file handles. Luckily UDF
already has a unique object identifier associated with each inode -
i_unique. Use that for initialization of i_generation.

Signed-off-by: Jan Kara

udf: Fortify LVID loading

2013-09-24T09:23:33+00:00

A user has reported an oops in udf_statfs() that was caused by
numOfPartitions entry in LVID structure being corrupted. Fix the problem
by verifying whether numOfPartitions makes sense at least to the extent
that LVID fits into a single block as it should.

Reported-by: Juergen Weigert 
Signed-off-by: Jan Kara

udf: Init/maintain file entry checkpoint field

2012-02-29T20:53:46+00:00

In accordance with ECMA 1.67 Part 4, 14.9.15, the checkpoint field
should be initialized to 1 at creation. (Zero is *not* a valid value.)

Signed-off-by: Steven P. Nickel 
Signed-off-by: Jan Kara

udf: propagate umode_t

2012-01-04T03:55:08+00:00

note re mount options: fmask and dmask are explicitly truncated to 12bit,
UDF_INVALID_MODE just needs to be guaranteed to differ from any such value.
And umask is used only in &= with umode_t, so we ignore other bits anyway.

Signed-off-by: Al Viro

udf: Move handling of uniqueID into a helper function and protect it by a s_alloc_mutex

2011-01-06T16:03:55+00:00

uniqueID handling has been duplicated in three places. Move it into a common
helper. Since we modify an LVID buffer with uniqueID update, we take
sbi->s_alloc_mutex to protect agaist other modifications of the structure.

Signed-off-by: Jan Kara

switch udf to ->evict_inode()

2010-08-09T20:48:19+00:00

Signed-off-by: Al Viro

udf: Remove dead quota code

2010-05-24T12:10:19+00:00

Quota on UDF is non-functional at least since 2.6.16 (I'm too lazy to
do more archeology) because it does not provide .quota_write and .quota_read
functions and thus quotaon(8) just returns EINVAL. Since nobody complained
for all those years and quota support is not even in UDF standard just nuke
it.

Signed-off-by: Jan Kara

udf: replace inode uid,gid,mode init with helper

2010-05-21T22:31:27+00:00

Acked-by: Jan Kara 
Signed-off-by: Dmitry Monakhov 
Signed-off-by: Al Viro