Btrfs: fix btrfs acl #ifdef checks

The btrfs acl code was #ifdefing for a define
that didn't exist. This correctly matches it
to the values used by the Kconfig file.

Signed

Btrfs: fix btrfs acl #ifdef checks

The btrfs acl code was #ifdefing for a define
that didn't exist. This correctly matches it
to the values used by the Kconfig file.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Btrfs: Use CONFIG_BTRFS_POSIX_ACL to enable ACL code

We've already defined CONFIG_BTRFS_POSIX_ACL in Kconfig, but we're
currently not using it and are testing CONFIG_FS_POSIX_ACL instead

Btrfs: Use CONFIG_BTRFS_POSIX_ACL to enable ACL code

We've already defined CONFIG_BTRFS_POSIX_ACL in Kconfig, but we're
currently not using it and are testing CONFIG_FS_POSIX_ACL instead.
CONFIG_FS_POSIX_ACL states "Never use this symbol for ifdefs".

Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Btrfs: join the transaction in __btrfs_setxattr

With selinux on we end up calling __btrfs_setxattr when we create an inode,
which calls btrfs_start_transaction(). The problem is we've a

Btrfs: join the transaction in __btrfs_setxattr

With selinux on we end up calling __btrfs_setxattr when we create an inode,
which calls btrfs_start_transaction(). The problem is we've already called
that in btrfs_new_inode, and in btrfs_start_transaction we end up doing a
wait_current_trans(). If btrfs-transaction has started committing it will wait
for all handles to finish, while the other process is waiting for the
transaction to commit. This is fixed by using btrfs_join_transaction, which
won't wait for the transaction to commit. Thanks,

Signed-off-by: Josef Bacik <jbacik@redhat.com>

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Btrfs: selinux support
Add call to LSM security initialization and save
resulting security xattr for new inodes.

Add xattr support to symlink inode ops.

Set inode->i_op for

Btrfs: selinux support
Add call to LSM security initialization and save
resulting security xattr for new inodes.

Add xattr support to symlink inode ops.

Set inode->i_op for existing special files.

Signed-off-by: jim owens <jowens@hp.com>

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Btrfs: cleanup xattr code

Andrew's review of the xattr code revealed some minor issues that this patch
addresses. Just an error return fix, got rid of a useless statement and
commen

Btrfs: cleanup xattr code

Andrew's review of the xattr code revealed some minor issues that this patch
addresses. Just an error return fix, got rid of a useless statement and
commented one of the trickier parts of __btrfs_getxattr.

Signed-off-by: Josef Bacik <jbacik@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Btrfs: Fix checkpatch.pl warnings

There were many, most are fixed now. struct-funcs.c generates some warnings
but these are bogus.

Signed-off-by: Chris Mason <chris.mason@oracl

Btrfs: Fix checkpatch.pl warnings

There were many, most are fixed now. struct-funcs.c generates some warnings
but these are bogus.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Btrfs: fix return value from btrfs_listxattr when buffer size is too small

The return value was being overwritten.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>

Btrfs: optimize btrget/set/removexattr

btrfs actually stores the whole xattr name, including the prefix ondisk,
so using the generic resolver that strips off the prefix is not very
h

Btrfs: optimize btrget/set/removexattr

btrfs actually stores the whole xattr name, including the prefix ondisk,
so using the generic resolver that strips off the prefix is not very
helpful. Instead do the real ondisk xattrs manually and only use the
generic resolver for synthetic xattrs like ACLs.

(Sorry Josef for guiding you towards the wrong direction here intially)

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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btrfs: optmize listxattr

The ->list handler is really not useful at all, because we always call
btrfs_xattr_generic_list anyway. After this is done
find_btrfs_xattr_handler becomes

btrfs: optmize listxattr

The ->list handler is really not useful at all, because we always call
btrfs_xattr_generic_list anyway. After this is done
find_btrfs_xattr_handler becomes unused, and it becomes obvious that the
temporary name buffer allocation isn't needed but we can directly copy
into the supplied buffer.

Tested with various getfattr -d calls on varying xattr lists.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Btrfs: Add ACL support

Signed-off-by: Chris Mason <chris.mason@oracle.com>

Btrfs: Remove unused xattr code

Signed-off-by: Chris Mason <chris.mason@oracle.com>

Btrfs: Replace the big fs_mutex with a collection of other locks

Extent alloctions are still protected by a large alloc_mutex.
Objectid allocations are covered by a objectid mutex
Ot

Btrfs: Replace the big fs_mutex with a collection of other locks

Extent alloctions are still protected by a large alloc_mutex.
Objectid allocations are covered by a objectid mutex
Other btree operations are protected by a lock on individual btree nodes

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Btrfs: Dislable acl xattr handlers

The acl code is not yet complete, and the xattr handlers are causing
problems for cp -p on some distros.

Signed-off-by: Chris Mason <chris.mas

Btrfs: Dislable acl xattr handlers

The acl code is not yet complete, and the xattr handlers are causing
problems for cp -p on some distros.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Btrfs: Fix compile on kernel without ACLs enabled

Signed-off-by: Chris Mason <chris.mason@oracle.com>

Btrfs: Change magic string to reflect new format

Signed-off-by: Chris Mason <chris.mason@oracle.com>

Btrfs: Implement ACLs setting and getting

ACLs are stored but not used for permission checks (yet)

Signed-off-by: Chris Mason <chris.mason@oracle.com>

Btrfs: xattr fixes

This fixes two typos that Yan pointed out to me. Thanks much,

Signed-off-by: Chris Mason <chris.mason@oracle.com>

Btrfs: Make ACLs return EOPNOTSUPP for now

There was a slight problem with ACL's returning EINVAL when you tried to set an
ACL. This isn't correct, we should be returning EOPNOTSUPP, so

Btrfs: Make ACLs return EOPNOTSUPP for now

There was a slight problem with ACL's returning EINVAL when you tried to set an
ACL. This isn't correct, we should be returning EOPNOTSUPP, so I did a very
ugly thing and just commented everybody out and made them return EOPNOTSUPP.
This is only temporary, I'm going back to implement ACL's, but Chris wants to
push out a release so this will suffice for now.

Also Yan suggested setting reada to -1 in the delete case to enable backwards
readahead, and in the listxattr case I moved path->reada = 2; to after the if
(!path) check so we can avoid a possible null dereference. Thank you,

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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xattr support for btrfs

Signed-off-by: Chris Mason <chris.mason@oracle.com>