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2014-01-26nfsd: use get_acl and ->set_aclChristoph Hellwig
Remove the boilerplate code to marshall and unmarhall ACL objects into xattrs and operate on the posix_acl objects directly. Also move all the ACL handling code into nfs?acl.c where it belongs. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26fs: remove generic_aclChristoph Hellwig
And instead convert tmpfs to use the new generic ACL code, with two stub methods provided for in-memory filesystems. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26nfs: use generic posix ACL infrastructure for v3 Posix ACLsChristoph Hellwig
This causes a small behaviour change in that we don't bother to set ACLs on file creation if the mode bit can express the access permissions fully, and thus behaving identical to local filesystems. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26um: hostfs: make functions staticJames Hogan
The hostfs_*() callback functions are all only used within hostfs_kern.c, so make them static. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: Richard Weinberger <richard@nod.at>
2014-01-25gfs2: use generic posix ACL infrastructureChristoph Hellwig
This contains some major refactoring for the create path so that inodes are created with the right mode to start with instead of fixing it up later. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25jfs: use generic posix ACL infrastructureChristoph Hellwig
Copy the scheme I introduced to btrfs many years ago to only use the xattr handler for ACLs, but pass plain attrs straight through. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Kleikamp <dave.kleikamp@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25xfs: use generic posix ACL infrastructureChristoph Hellwig
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux, and create inodes with the proper mode instead of fixing it up later. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25reiserfs: use generic posix ACL infrastructureChristoph Hellwig
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25ocfs2: use generic posix ACL infrastructureChristoph Hellwig
This contains some major refactoring for the create path so that inodes are created with the right mode to start with instead of fixing it up later. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25jffs2: use generic posix ACL infrastructureChristoph Hellwig
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25hfsplus: use generic posix ACL infrastructureChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Vyacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25f2fs: use generic posix ACL infrastructureChristoph Hellwig
f2fs has some weird mode bit handling, so still using the old chmod code for now. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25ext2/3/4: use generic posix ACL infrastructureChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25btrfs: use generic posix ACL infrastructureChristoph Hellwig
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: make posix_acl_create more usefulChristoph Hellwig
Rename the current posix_acl_created to __posix_acl_create and add a fully featured helper to set up the ACLs on file creation that uses get_acl(). Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: make posix_acl_chmod more usefulChristoph Hellwig
Rename the current posix_acl_chmod to __posix_acl_chmod and add a fully featured ACL chmod helper that uses the ->set_acl inode operation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: add generic xattr_acl handlersChristoph Hellwig
With the ->set_acl inode operation we can implement the Posix ACL xattr handlers in generic code instead of duplicating them all over the tree. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: add get_acl helperChristoph Hellwig
Factor out the code to get an ACL either from the inode or disk from check_acl, so that it can be used elsewhere later on. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: merge xattr_acl.c into posix_acl.cChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25reiserfs: prefix ACL symbols with reiserfs_Christoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: 1) BPF debugger and asm tool by Daniel Borkmann. 2) Speed up create/bind in AF_PACKET, also from Daniel Borkmann. 3) Correct reciprocal_divide and update users, from Hannes Frederic Sowa and Daniel Borkmann. 4) Currently we only have a "set" operation for the hw timestamp socket ioctl, add a "get" operation to match. From Ben Hutchings. 5) Add better trace events for debugging driver datapath problems, also from Ben Hutchings. 6) Implement auto corking in TCP, from Eric Dumazet. Basically, if we have a small send and a previous packet is already in the qdisc or device queue, defer until TX completion or we get more data. 7) Allow userspace to manage ipv6 temporary addresses, from Jiri Pirko. 8) Add a qdisc bypass option for AF_PACKET sockets, from Daniel Borkmann. 9) Share IP header compression code between Bluetooth and IEEE802154 layers, from Jukka Rissanen. 10) Fix ipv6 router reachability probing, from Jiri Benc. 11) Allow packets to be captured on macvtap devices, from Vlad Yasevich. 12) Support tunneling in GRO layer, from Jerry Chu. 13) Allow bonding to be configured fully using netlink, from Scott Feldman. 14) Allow AF_PACKET users to obtain the VLAN TPID, just like they can already get the TCI. From Atzm Watanabe. 15) New "Heavy Hitter" qdisc, from Terry Lam. 16) Significantly improve the IPSEC support in pktgen, from Fan Du. 17) Allow ipv4 tunnels to cache routes, just like sockets. From Tom Herbert. 18) Add Proportional Integral Enhanced packet scheduler, from Vijay Subramanian. 19) Allow openvswitch to mmap'd netlink, from Thomas Graf. 20) Key TCP metrics blobs also by source address, not just destination address. From Christoph Paasch. 21) Support 10G in generic phylib. From Andy Fleming. 22) Try to short-circuit GRO flow compares using device provided RX hash, if provided. From Tom Herbert. The wireless and netfilter folks have been busy little bees too. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2064 commits) net/cxgb4: Fix referencing freed adapter ipv6: reallocate addrconf router for ipv6 address when lo device up fib_frontend: fix possible NULL pointer dereference rtnetlink: remove IFLA_BOND_SLAVE definition rtnetlink: remove check for fill_slave_info in rtnl_have_link_slave_info qlcnic: update version to 5.3.55 qlcnic: Enhance logic to calculate msix vectors. qlcnic: Refactor interrupt coalescing code for all adapters. qlcnic: Update poll controller code path qlcnic: Interrupt code cleanup qlcnic: Enhance Tx timeout debugging. qlcnic: Use bool for rx_mac_learn. bonding: fix u64 division rtnetlink: add missing IFLA_BOND_AD_INFO_UNSPEC sfc: Use the correct maximum TX DMA ring size for SFC9100 Add Shradha Shah as the sfc driver maintainer. net/vxlan: Share RX skb de-marking and checksum checks with ovs tulip: cleanup by using ARRAY_SIZE() ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called net/cxgb4: Don't retrieve stats during recovery ...
2014-01-25befs: iget_locked() doesn't return an ERR_PTRRakesh Pandit
Also fix befs_iget return value if iget_locked fails. Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: __fget_light() can use __fget() in slow pathOleg Nesterov
The slow path in __fget_light() can use __fget() to avoid the code duplication. Saves 232 bytes. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: factor out common code in fget_light() and fget_raw_light()Oleg Nesterov
Apart from FMODE_PATH check fget_light() and fget_raw_light() are identical, shift the code into the new helper, __fget_light(fd, mask). Saves 208 bytes. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: factor out common code in fget() and fget_raw()Oleg Nesterov
Apart from FMODE_PATH check fget() and fget_raw() are identical, shift the code into the new simple helper, __fget(fd, mask). Saves 160 bytes. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25change close_files() to use rcu_dereference_raw(files->fdt)Oleg Nesterov
put_files_struct() and close_files() do rcu_read_lock() to make rcu_dereference_check_fdtable() happy. This looks a bit ugly, files_fdtable() just reads the pointer, we can simply use rcu_dereference_raw() to avoid the warning. The patch also changes close_files() to return fdt, this avoids another rcu_read_lock()/files_fdtable() in put_files_struct(). I think close_files() needs more cleanups: - we do not need xchg() exactly because we are the last user of this files_struct - "if (file)" should be turned into WARN_ON(!file) Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25introduce __fcheck_files() to fix rcu_dereference_check_fdtable(), kill ↵Oleg Nesterov
rcu_my_thread_group_empty() rcu_dereference_check_fdtable() looks very wrong, 1. rcu_my_thread_group_empty() was added by 844b9a8707f1 "vfs: fix RCU-lockdep false positive due to /proc" but it doesn't really fix the problem. A CLONE_THREAD (without CLONE_FILES) task can hit the same race with get_files_struct(). And otoh rcu_my_thread_group_empty() can suppress the correct warning if the caller is the CLONE_FILES (without CLONE_THREAD) task. 2. files->count == 1 check is not really right too. Even if this files_struct is not shared it is not safe to access it lockless unless the caller is the owner. Otoh, this check is sub-optimal. files->count == 0 always means it is safe to use it lockless even if files != current->files, but put_files_struct() has to take rcu_read_lock(). See the next patch. This patch removes the buggy checks and turns fcheck_files() into __fcheck_files() which uses rcu_dereference_raw(), the "unshared" callers, fget_light() and fget_raw_light(), can use it to avoid the warning from RCU-lockdep. fcheck_files() is trivially reimplemented as rcu_lockdep_assert() plus __fcheck_files(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25kill reiserfs_bdevname()Al Viro
it's never called with NULL argument... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25afs: get rid of junk in fs/afs/proc.cAl Viro
kill pointless method instances and don't bother with ->owner - it's ignored for procfs files anyway, make use of remove_proc_subtree() for removal, get rid of cell->proc_dir. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25nls: have register_nls() set ->ownerAl Viro
pass owner explicitly to __register_nls(), make register_nls() a macro passing THIS_MODULE as the owner argument to __register_nls(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25eventfd_ctx_fdget(): use fdget() instead of fget()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25btrfs: sanitize BTRFS_IOC_FILE_EXTENT_SAMEAl Viro
* don't assume that ->dest_count won't change between copy_from_user() and memdup_user() * use fdget instead of fget * don't bother comparing superblocks when we'd already compared vfsmounts * get rid of excessive goto * use file_inode() instead of open-coding the sucker Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25qnx4: clean qnx4_fill_super() upAl Viro
* pass on-disk superblock to qnx4_chkroot() explicitly * don't leave stale (and unused) pointers in qnx4_super_block * free stuff in ->kill_sb(); ->put_super() becomes empty and dies * simplify failure exits Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25efs: get rid of ->put_super()Al Viro
simplifies failure exits in ->mount()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25cramfs: take headers to fs/cramfsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25cramfs: get rid of ->put_super()Al Viro
failure exits are simpler that way Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25affs: use ->kill_sb() to simplify ->put_super() and failure exits of ->mount()Al Viro
... and return saner errors from ->mount(), while we are at it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25xfs: switch to kfree_put_link()Al Viro
don't bother open-coding it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25ecryptfs: fix failure handling in ->readlink()Al Viro
If ecryptfs_readlink_lower() fails, buf remains an uninitialized pointer and passing it nd_set_link() won't do anything good. Fixed by switching ecryptfs_readlink_lower() to saner API - make it return buf or ERR_PTR(...) and update callers. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-24nfsd4: decrease nfsd4_encode_fattr stack usageJ. Bruce Fields
A struct svc_fh is 320 bytes on x86_64, it'd be better not to have these on the stack. kmalloc'ing them probably isn't ideal either, but this is the simplest thing to do. If it turns out to be a problem in the readdir case then we could add a svc_fh to nfsd4_readdir and pass that in. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-01-24xfs: allow logical-sector sized O_DIRECTEric Sandeen
Some time ago, mkfs.xfs started picking the storage physical sector size as the default filesystem "sector size" in order to avoid RMW costs incurred by doing IOs at logical sector size alignments. However, this means that for a filesystem made with i.e. a 4k sector size on an "advanced format" 4k/512 disk, 512-byte direct IOs are no longer allowed. This means that XFS has essentially turned this AF drive into a hard 4K device, from the filesystem on up. XFS's mkfs-specified "sector size" is really just controlling the minimum size & alignment of filesystem metadata. There is no real need to tightly couple XFS's minimal metadata size to the minimum allowed direct IO size; XFS can continue doing metadata in optimal sizes, but still allow smaller DIOs for apps which issue them, for whatever reason. This patch adds a new field to the xfs_buftarg, so that we now track 2 sizes: 1) The metadata sector size, which is the minimum unit and alignment of IO which will be performed by metadata operations. 2) The device logical sector size The first is used internally by the file system for metadata alignment and IOs. The second is used for the minimum allowed direct IO alignment. This has passed xfstests on filesystems made with 4k sectors, including when run under the patch I sent to ignore XFS_IOC_DIOINFO, and issue 512 DIOs anyway. I also directly tested end of block behavior on preallocated, sparse, and existing files when we do a 512 IO into a 4k file on a 4k-sector filesystem, to be sure there were no unexpected behaviors. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2014-01-24xfs: rename xfs_buftarg structure membersEric Sandeen
In preparation for adding new members to the structure, give these old ones more descriptive names: bt_ssize -> bt_meta_sectorsize bt_smask -> bt_meta_sectormask Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2014-01-24xfs: clean up xfs_buftargEric Sandeen
Clean up the xfs_buftarg structure a bit: - remove bt_bsize which is never used - replace bt_sshift with bt_ssize; we only ever shift it back Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2014-01-23romfs: fix returm err while getting inode in fill_superRui Xiang
Getting an inode by romfs_iget may lead to an err in fill_super, and the err value should be return. And it should return -ENOMEM instead while d_make_root fails, fix it too. Signed-off-by: Rui Xiang <rui.xiang@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23userns: relax the posix_acl_valid() checksAndreas Gruenbacher
So far, POSIX ACLs are using a canonical representation that keeps all ACL entries in a strict order; the ACL_USER and ACL_GROUP entries for specific users and groups are ordered by user and group identifier, respectively. The user-space code provides ACL entries in this order; the kernel verifies that the ACL entry order is correct in posix_acl_valid(). User namespaces allow to arbitrary map user and group identifiers which can cause the ACL_USER and ACL_GROUP entry order to differ between user space and the kernel; posix_acl_valid() would then fail. Work around this by allowing ACL_USER and ACL_GROUP entries to be in any order in the kernel. The effect is only minor: file permission checks will pick the first matching ACL_USER entry, and check all matching ACL_GROUP entries. (The libacl user-space library and getfacl / setfacl tools will not create ACLs with duplicate user or group idenfifiers; they will handle ACLs with entries in an arbitrary order correctly.) Signed-off-by: Andreas Gruenbacher <agruen@linbit.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Theodore Tso <tytso@mit.edu> Cc: Christoph Hellwig <hch@infradead.org> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23fs-ext3-use-rbtree-postorder-iteration-helper-instead-of-opencoding-fixAndrew Morton
use do{}while - more efficient and it squishes a coccinelle warning Reported-by: Fengguang Wu <fengguang.wu@intel.com> Cc: Cody P Schafer <cody@linux.vnet.ibm.com> Cc: Jan Kara <jack@suse.cz> Cc: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23fs/ext3: use rbtree postorder iteration helper instead of opencodingCody P Schafer
Use rbtree_postorder_for_each_entry_safe() to destroy the rbtree instead of opencoding an alternate postorder iteration that modifies the tree Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Cc: Michel Lespinasse <walken@google.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23fs/jffs2: use rbtree postorder iteration helper instead of opencodingCody P Schafer
Use rbtree_postorder_for_each_entry_safe() to destroy the rbtree instead of opencoding an alternate postorder iteration that modifies the tree Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Cc: Michel Lespinasse <walken@google.com> Cc: Jan Kara <jack@suse.cz> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23fs/ext4: use rbtree postorder iteration helper instead of opencodingCody P Schafer
Use rbtree_postorder_for_each_entry_safe() to destroy the rbtree instead of opencoding an alternate postorder iteration that modifies the tree Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Michel Lespinasse <walken@google.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23fs/ubifs: use rbtree postorder iteration helper instead of opencodingCody P Schafer
Use rbtree_postorder_for_each_entry_safe() to destroy the rbtree instead of opencoding an alternate postorder iteration that modifies the tree Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Cc: Michel Lespinasse <walken@google.com> Cc: Jan Kara <jack@suse.cz> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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