#include <linux/syscalls.h>
#include <linux/errno.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/cred.h>
#include <linux/fcntl.h>
#include <linux/eventpoll.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/sched.h>
#include <linux/file.h>
#include <linux/stat.h>
#include <linux/kernel.h>
#include <linux/ktime.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/pagemap.h>
#include <linux/rxrpc.h>
#include <linux/key.h>
#include <linux/capability.h>
#include <linux/fsnotify.h>
#include <linux/fcntl.h>
+#include <linux/filelock.h>
#include <linux/security.h>
#include <linux/evm.h>
#include <linux/ima.h>
#include <linux/wait.h>
#include <linux/writeback.h>
#include <linux/iversion.h>
+#include <linux/filelock.h>
#include "super.h"
#include "mds_client.h"
#include "super.h"
#include "mds_client.h"
+#include <linux/filelock.h>
#include <linux/ceph/pagelist.h>
static u64 lock_secret;
#include <linux/module.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/mount.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <uapi/linux/cifs/cifs_mount.h>
#include "../smbfs_common/smb2pdu.h"
#include "smb2pdu.h"
+#include <linux/filelock.h>
#define SMB_PATH_MAX 260
#define CIFS_PORT 445
/* want to reuse a stale file handle and only the caller knows the file info */
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/kernel.h>
#include <linux/vfs.h>
#include <linux/slab.h>
*
*/
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/backing-dev.h>
#include <linux/stat.h>
#include <linux/fcntl.h>
*
*/
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
*/
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/miscdevice.h>
#include <linux/poll.h>
#include <linux/dlm.h>
#include <linux/mm.h>
#include <linux/sched/task.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/file.h>
#include <linux/fdtable.h>
#include <linux/capability.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/security.h>
#include <linux/cred.h>
#include <linux/eventpoll.h>
#include <linux/falloc.h>
#include <linux/uio.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
static int fuse_send_open(struct fuse_mount *fm, u64 nodeid,
unsigned int open_flags, int opcode,
#include <linux/mm.h>
#include <linux/mount.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/gfs2_ondisk.h>
#include <linux/falloc.h>
#include <linux/swap.h>
*/
#include <linux/export.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/mm.h>
#include <linux/backing-dev.h>
#include <linux/hash.h>
#include <linux/ethtool.h>
#include <linux/falloc.h>
#include <linux/mount.h>
+#include <linux/filelock.h>
#include "glob.h"
#include "smbfsctl.h"
#include <linux/kernel.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/uaccess.h>
#include <linux/backing-dev.h>
#include <linux/writeback.h>
*/
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/nfs_fs.h>
#include <linux/utsname.h>
#include <linux/freezer.h>
#define __LOCKD_NETNS_H__
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <net/netns/generic.h>
struct lockd_net {
#include <linux/capability.h>
#include <linux/file.h>
#include <linux/fdtable.h>
+#include <linux/filelock.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/security.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/namei.h>
#include <linux/pagemap.h>
#include <linux/sched/mm.h>
#include <linux/swap.h>
#include <linux/uaccess.h>
+#include <linux/filelock.h>
#include "delegation.h"
#include "internal.h"
#define NFS4_MAX_LOOP_ON_RECOVER (10)
#include <linux/seqlock.h>
+#include <linux/filelock.h>
struct idmap;
#include <linux/nfs_page.h>
#include <linux/nfs_mount.h>
#include <linux/export.h>
+#include <linux/filelock.h>
#include "internal.h"
#include "pnfs.h"
#include <linux/freezer.h>
#include <linux/wait.h>
#include <linux/iversion.h>
+#include <linux/filelock.h>
#include <linux/uaccess.h>
#include <linux/sched/mm.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
static unsigned int grace_net_id;
static DEFINE_SPINLOCK(grace_lock);
#include <net/net_namespace.h>
#include <net/netns/generic.h>
+#include <linux/filelock.h>
#include <linux/percpu_counter.h>
#include <linux/siphash.h>
*/
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/fcntl.h>
#include <cluster/masklog.h>
#include <linux/module.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/miscdevice.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/dnotify.h>
#include <linux/compat.h>
#include <linux/mnt_idmapping.h>
+#include <linux/filelock.h>
#include "internal.h"
#include "orangefs-kernel.h"
#include "orangefs-bufmap.h"
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/pagemap.h>
static int flush_racache(struct inode *inode)
#include <linux/security.h>
#include <linux/evm.h>
#include <linux/fsnotify.h>
+#include <linux/filelock.h>
#include "internal.h"
#include <linux/file.h>
#include <linux/seq_file.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/proc_fs.h>
#include <linux/uaccess.h>
#include <linux/compat.h>
#include <asm/unistd.h>
+#include <linux/filelock.h>
static bool nsec_valid(long nsec)
{
Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
*/
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/slab.h>
#include <linux/file.h>
#include <linux/xattr.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/file.h>
+#include <linux/filelock.h>
#include <linux/swap.h>
#include <linux/errno.h>
#include <linux/sched/signal.h>
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_FILELOCK_H
+#define _LINUX_FILELOCK_H
+
+#include <linux/fs.h>
+
+#define FL_POSIX 1
+#define FL_FLOCK 2
+#define FL_DELEG 4 /* NFSv4 delegation */
+#define FL_ACCESS 8 /* not trying to lock, just looking */
+#define FL_EXISTS 16 /* when unlocking, test for existence */
+#define FL_LEASE 32 /* lease held on this file */
+#define FL_CLOSE 64 /* unlock on close */
+#define FL_SLEEP 128 /* A blocking lock */
+#define FL_DOWNGRADE_PENDING 256 /* Lease is being downgraded */
+#define FL_UNLOCK_PENDING 512 /* Lease is being broken */
+#define FL_OFDLCK 1024 /* lock is "owned" by struct file */
+#define FL_LAYOUT 2048 /* outstanding pNFS layout */
+#define FL_RECLAIM 4096 /* reclaiming from a reboot server */
+
+#define FL_CLOSE_POSIX (FL_POSIX | FL_CLOSE)
+
+/*
+ * Special return value from posix_lock_file() and vfs_lock_file() for
+ * asynchronous locking.
+ */
+#define FILE_LOCK_DEFERRED 1
+
+struct file_lock;
+
+struct file_lock_operations {
+ void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
+ void (*fl_release_private)(struct file_lock *);
+};
+
+struct lock_manager_operations {
+ void *lm_mod_owner;
+ fl_owner_t (*lm_get_owner)(fl_owner_t);
+ void (*lm_put_owner)(fl_owner_t);
+ void (*lm_notify)(struct file_lock *); /* unblock callback */
+ int (*lm_grant)(struct file_lock *, int);
+ bool (*lm_break)(struct file_lock *);
+ int (*lm_change)(struct file_lock *, int, struct list_head *);
+ void (*lm_setup)(struct file_lock *, void **);
+ bool (*lm_breaker_owns_lease)(struct file_lock *);
+ bool (*lm_lock_expirable)(struct file_lock *cfl);
+ void (*lm_expire_lock)(void);
+};
+
+struct lock_manager {
+ struct list_head list;
+ /*
+ * NFSv4 and up also want opens blocked during the grace period;
+ * NLM doesn't care:
+ */
+ bool block_opens;
+};
+
+struct net;
+void locks_start_grace(struct net *, struct lock_manager *);
+void locks_end_grace(struct lock_manager *);
+bool locks_in_grace(struct net *);
+bool opens_in_grace(struct net *);
+
+/*
+ * struct file_lock has a union that some filesystems use to track
+ * their own private info. The NFS side of things is defined here:
+ */
+#include <linux/nfs_fs_i.h>
+
+/*
+ * struct file_lock represents a generic "file lock". It's used to represent
+ * POSIX byte range locks, BSD (flock) locks, and leases. It's important to
+ * note that the same struct is used to represent both a request for a lock and
+ * the lock itself, but the same object is never used for both.
+ *
+ * FIXME: should we create a separate "struct lock_request" to help distinguish
+ * these two uses?
+ *
+ * The varous i_flctx lists are ordered by:
+ *
+ * 1) lock owner
+ * 2) lock range start
+ * 3) lock range end
+ *
+ * Obviously, the last two criteria only matter for POSIX locks.
+ */
+struct file_lock {
+ struct file_lock *fl_blocker; /* The lock, that is blocking us */
+ struct list_head fl_list; /* link into file_lock_context */
+ struct hlist_node fl_link; /* node in global lists */
+ struct list_head fl_blocked_requests; /* list of requests with
+ * ->fl_blocker pointing here
+ */
+ struct list_head fl_blocked_member; /* node in
+ * ->fl_blocker->fl_blocked_requests
+ */
+ fl_owner_t fl_owner;
+ unsigned int fl_flags;
+ unsigned char fl_type;
+ unsigned int fl_pid;
+ int fl_link_cpu; /* what cpu's list is this on? */
+ wait_queue_head_t fl_wait;
+ struct file *fl_file;
+ loff_t fl_start;
+ loff_t fl_end;
+
+ struct fasync_struct * fl_fasync; /* for lease break notifications */
+ /* for lease breaks: */
+ unsigned long fl_break_time;
+ unsigned long fl_downgrade_time;
+
+ const struct file_lock_operations *fl_ops; /* Callbacks for filesystems */
+ const struct lock_manager_operations *fl_lmops; /* Callbacks for lockmanagers */
+ union {
+ struct nfs_lock_info nfs_fl;
+ struct nfs4_lock_info nfs4_fl;
+ struct {
+ struct list_head link; /* link in AFS vnode's pending_locks list */
+ int state; /* state of grant or error if -ve */
+ unsigned int debug_id;
+ } afs;
+ struct {
+ struct inode *inode;
+ } ceph;
+ } fl_u;
+} __randomize_layout;
+
+struct file_lock_context {
+ spinlock_t flc_lock;
+ struct list_head flc_flock;
+ struct list_head flc_posix;
+ struct list_head flc_lease;
+};
+
+#define locks_inode(f) file_inode(f)
+
+#ifdef CONFIG_FILE_LOCKING
+int fcntl_getlk(struct file *, unsigned int, struct flock *);
+int fcntl_setlk(unsigned int, struct file *, unsigned int,
+ struct flock *);
+
+#if BITS_PER_LONG == 32
+int fcntl_getlk64(struct file *, unsigned int, struct flock64 *);
+int fcntl_setlk64(unsigned int, struct file *, unsigned int,
+ struct flock64 *);
+#endif
+
+int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
+int fcntl_getlease(struct file *filp);
+
+/* fs/locks.c */
+void locks_free_lock_context(struct inode *inode);
+void locks_free_lock(struct file_lock *fl);
+void locks_init_lock(struct file_lock *);
+struct file_lock * locks_alloc_lock(void);
+void locks_copy_lock(struct file_lock *, struct file_lock *);
+void locks_copy_conflock(struct file_lock *, struct file_lock *);
+void locks_remove_posix(struct file *, fl_owner_t);
+void locks_remove_file(struct file *);
+void locks_release_private(struct file_lock *);
+void posix_test_lock(struct file *, struct file_lock *);
+int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
+int locks_delete_block(struct file_lock *);
+int vfs_test_lock(struct file *, struct file_lock *);
+int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);
+int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
+bool vfs_inode_has_locks(struct inode *inode);
+int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl);
+int __break_lease(struct inode *inode, unsigned int flags, unsigned int type);
+void lease_get_mtime(struct inode *, struct timespec64 *time);
+int generic_setlease(struct file *, long, struct file_lock **, void **priv);
+int vfs_setlease(struct file *, long, struct file_lock **, void **);
+int lease_modify(struct file_lock *, int, struct list_head *);
+
+struct notifier_block;
+int lease_register_notifier(struct notifier_block *);
+void lease_unregister_notifier(struct notifier_block *);
+
+struct files_struct;
+void show_fd_locks(struct seq_file *f,
+ struct file *filp, struct files_struct *files);
+bool locks_owner_has_blockers(struct file_lock_context *flctx,
+ fl_owner_t owner);
+
+static inline struct file_lock_context *
+locks_inode_context(const struct inode *inode)
+{
+ return smp_load_acquire(&inode->i_flctx);
+}
+
+#else /* !CONFIG_FILE_LOCKING */
+static inline int fcntl_getlk(struct file *file, unsigned int cmd,
+ struct flock __user *user)
+{
+ return -EINVAL;
+}
+
+static inline int fcntl_setlk(unsigned int fd, struct file *file,
+ unsigned int cmd, struct flock __user *user)
+{
+ return -EACCES;
+}
+
+#if BITS_PER_LONG == 32
+static inline int fcntl_getlk64(struct file *file, unsigned int cmd,
+ struct flock64 *user)
+{
+ return -EINVAL;
+}
+
+static inline int fcntl_setlk64(unsigned int fd, struct file *file,
+ unsigned int cmd, struct flock64 *user)
+{
+ return -EACCES;
+}
+#endif
+static inline int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
+{
+ return -EINVAL;
+}
+
+static inline int fcntl_getlease(struct file *filp)
+{
+ return F_UNLCK;
+}
+
+static inline void
+locks_free_lock_context(struct inode *inode)
+{
+}
+
+static inline void locks_init_lock(struct file_lock *fl)
+{
+ return;
+}
+
+static inline void locks_copy_conflock(struct file_lock *new, struct file_lock *fl)
+{
+ return;
+}
+
+static inline void locks_copy_lock(struct file_lock *new, struct file_lock *fl)
+{
+ return;
+}
+
+static inline void locks_remove_posix(struct file *filp, fl_owner_t owner)
+{
+ return;
+}
+
+static inline void locks_remove_file(struct file *filp)
+{
+ return;
+}
+
+static inline void posix_test_lock(struct file *filp, struct file_lock *fl)
+{
+ return;
+}
+
+static inline int posix_lock_file(struct file *filp, struct file_lock *fl,
+ struct file_lock *conflock)
+{
+ return -ENOLCK;
+}
+
+static inline int locks_delete_block(struct file_lock *waiter)
+{
+ return -ENOENT;
+}
+
+static inline int vfs_test_lock(struct file *filp, struct file_lock *fl)
+{
+ return 0;
+}
+
+static inline int vfs_lock_file(struct file *filp, unsigned int cmd,
+ struct file_lock *fl, struct file_lock *conf)
+{
+ return -ENOLCK;
+}
+
+static inline int vfs_cancel_lock(struct file *filp, struct file_lock *fl)
+{
+ return 0;
+}
+
+static inline bool vfs_inode_has_locks(struct inode *inode)
+{
+ return false;
+}
+
+static inline int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl)
+{
+ return -ENOLCK;
+}
+
+static inline int __break_lease(struct inode *inode, unsigned int mode, unsigned int type)
+{
+ return 0;
+}
+
+static inline void lease_get_mtime(struct inode *inode,
+ struct timespec64 *time)
+{
+ return;
+}
+
+static inline int generic_setlease(struct file *filp, long arg,
+ struct file_lock **flp, void **priv)
+{
+ return -EINVAL;
+}
+
+static inline int vfs_setlease(struct file *filp, long arg,
+ struct file_lock **lease, void **priv)
+{
+ return -EINVAL;
+}
+
+static inline int lease_modify(struct file_lock *fl, int arg,
+ struct list_head *dispose)
+{
+ return -EINVAL;
+}
+
+struct files_struct;
+static inline void show_fd_locks(struct seq_file *f,
+ struct file *filp, struct files_struct *files) {}
+static inline bool locks_owner_has_blockers(struct file_lock_context *flctx,
+ fl_owner_t owner)
+{
+ return false;
+}
+
+static inline struct file_lock_context *
+locks_inode_context(const struct inode *inode)
+{
+ return NULL;
+}
+
+#endif /* !CONFIG_FILE_LOCKING */
+
+static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
+{
+ return locks_lock_inode_wait(locks_inode(filp), fl);
+}
+
+#ifdef CONFIG_FILE_LOCKING
+static inline int break_lease(struct inode *inode, unsigned int mode)
+{
+ /*
+ * Since this check is lockless, we must ensure that any refcounts
+ * taken are done before checking i_flctx->flc_lease. Otherwise, we
+ * could end up racing with tasks trying to set a new lease on this
+ * file.
+ */
+ smp_mb();
+ if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
+ return __break_lease(inode, mode, FL_LEASE);
+ return 0;
+}
+
+static inline int break_deleg(struct inode *inode, unsigned int mode)
+{
+ /*
+ * Since this check is lockless, we must ensure that any refcounts
+ * taken are done before checking i_flctx->flc_lease. Otherwise, we
+ * could end up racing with tasks trying to set a new lease on this
+ * file.
+ */
+ smp_mb();
+ if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
+ return __break_lease(inode, mode, FL_DELEG);
+ return 0;
+}
+
+static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
+{
+ int ret;
+
+ ret = break_deleg(inode, O_WRONLY|O_NONBLOCK);
+ if (ret == -EWOULDBLOCK && delegated_inode) {
+ *delegated_inode = inode;
+ ihold(inode);
+ }
+ return ret;
+}
+
+static inline int break_deleg_wait(struct inode **delegated_inode)
+{
+ int ret;
+
+ ret = break_deleg(*delegated_inode, O_WRONLY);
+ iput(*delegated_inode);
+ *delegated_inode = NULL;
+ return ret;
+}
+
+static inline int break_layout(struct inode *inode, bool wait)
+{
+ smp_mb();
+ if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
+ return __break_lease(inode,
+ wait ? O_WRONLY : O_WRONLY | O_NONBLOCK,
+ FL_LAYOUT);
+ return 0;
+}
+
+#else /* !CONFIG_FILE_LOCKING */
+static inline int break_lease(struct inode *inode, unsigned int mode)
+{
+ return 0;
+}
+
+static inline int break_deleg(struct inode *inode, unsigned int mode)
+{
+ return 0;
+}
+
+static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
+{
+ return 0;
+}
+
+static inline int break_deleg_wait(struct inode **delegated_inode)
+{
+ BUG();
+ return 0;
+}
+
+static inline int break_layout(struct inode *inode, bool wait)
+{
+ return 0;
+}
+
+#endif /* CONFIG_FILE_LOCKING */
+
+#endif /* _LINUX_FILELOCK_H */
#define MAX_LFS_FILESIZE ((loff_t)LLONG_MAX)
#endif
-#define FL_POSIX 1
-#define FL_FLOCK 2
-#define FL_DELEG 4 /* NFSv4 delegation */
-#define FL_ACCESS 8 /* not trying to lock, just looking */
-#define FL_EXISTS 16 /* when unlocking, test for existence */
-#define FL_LEASE 32 /* lease held on this file */
-#define FL_CLOSE 64 /* unlock on close */
-#define FL_SLEEP 128 /* A blocking lock */
-#define FL_DOWNGRADE_PENDING 256 /* Lease is being downgraded */
-#define FL_UNLOCK_PENDING 512 /* Lease is being broken */
-#define FL_OFDLCK 1024 /* lock is "owned" by struct file */
-#define FL_LAYOUT 2048 /* outstanding pNFS layout */
-#define FL_RECLAIM 4096 /* reclaiming from a reboot server */
-
-#define FL_CLOSE_POSIX (FL_POSIX | FL_CLOSE)
-
-/*
- * Special return value from posix_lock_file() and vfs_lock_file() for
- * asynchronous locking.
- */
-#define FILE_LOCK_DEFERRED 1
-
/* legacy typedef, should eventually be removed */
typedef void *fl_owner_t;
struct file_lock;
-struct file_lock_operations {
- void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
- void (*fl_release_private)(struct file_lock *);
-};
-
-struct lock_manager_operations {
- void *lm_mod_owner;
- fl_owner_t (*lm_get_owner)(fl_owner_t);
- void (*lm_put_owner)(fl_owner_t);
- void (*lm_notify)(struct file_lock *); /* unblock callback */
- int (*lm_grant)(struct file_lock *, int);
- bool (*lm_break)(struct file_lock *);
- int (*lm_change)(struct file_lock *, int, struct list_head *);
- void (*lm_setup)(struct file_lock *, void **);
- bool (*lm_breaker_owns_lease)(struct file_lock *);
- bool (*lm_lock_expirable)(struct file_lock *cfl);
- void (*lm_expire_lock)(void);
-};
-
-struct lock_manager {
- struct list_head list;
- /*
- * NFSv4 and up also want opens blocked during the grace period;
- * NLM doesn't care:
- */
- bool block_opens;
-};
-
-struct net;
-void locks_start_grace(struct net *, struct lock_manager *);
-void locks_end_grace(struct lock_manager *);
-bool locks_in_grace(struct net *);
-bool opens_in_grace(struct net *);
-
-/* that will die - we need it for nfs_lock_info */
-#include <linux/nfs_fs_i.h>
-
-/*
- * struct file_lock represents a generic "file lock". It's used to represent
- * POSIX byte range locks, BSD (flock) locks, and leases. It's important to
- * note that the same struct is used to represent both a request for a lock and
- * the lock itself, but the same object is never used for both.
- *
- * FIXME: should we create a separate "struct lock_request" to help distinguish
- * these two uses?
- *
- * The varous i_flctx lists are ordered by:
- *
- * 1) lock owner
- * 2) lock range start
- * 3) lock range end
- *
- * Obviously, the last two criteria only matter for POSIX locks.
- */
-struct file_lock {
- struct file_lock *fl_blocker; /* The lock, that is blocking us */
- struct list_head fl_list; /* link into file_lock_context */
- struct hlist_node fl_link; /* node in global lists */
- struct list_head fl_blocked_requests; /* list of requests with
- * ->fl_blocker pointing here
- */
- struct list_head fl_blocked_member; /* node in
- * ->fl_blocker->fl_blocked_requests
- */
- fl_owner_t fl_owner;
- unsigned int fl_flags;
- unsigned char fl_type;
- unsigned int fl_pid;
- int fl_link_cpu; /* what cpu's list is this on? */
- wait_queue_head_t fl_wait;
- struct file *fl_file;
- loff_t fl_start;
- loff_t fl_end;
-
- struct fasync_struct * fl_fasync; /* for lease break notifications */
- /* for lease breaks: */
- unsigned long fl_break_time;
- unsigned long fl_downgrade_time;
-
- const struct file_lock_operations *fl_ops; /* Callbacks for filesystems */
- const struct lock_manager_operations *fl_lmops; /* Callbacks for lockmanagers */
- union {
- struct nfs_lock_info nfs_fl;
- struct nfs4_lock_info nfs4_fl;
- struct {
- struct list_head link; /* link in AFS vnode's pending_locks list */
- int state; /* state of grant or error if -ve */
- unsigned int debug_id;
- } afs;
- struct {
- struct inode *inode;
- } ceph;
- } fl_u;
-} __randomize_layout;
-
-struct file_lock_context {
- spinlock_t flc_lock;
- struct list_head flc_flock;
- struct list_head flc_posix;
- struct list_head flc_lease;
-};
-
/* The following constant reflects the upper bound of the file/locking space */
#ifndef OFFSET_MAX
#define OFFSET_MAX type_max(loff_t)
extern void send_sigio(struct fown_struct *fown, int fd, int band);
-#define locks_inode(f) file_inode(f)
-
-#ifdef CONFIG_FILE_LOCKING
-extern int fcntl_getlk(struct file *, unsigned int, struct flock *);
-extern int fcntl_setlk(unsigned int, struct file *, unsigned int,
- struct flock *);
-
-#if BITS_PER_LONG == 32
-extern int fcntl_getlk64(struct file *, unsigned int, struct flock64 *);
-extern int fcntl_setlk64(unsigned int, struct file *, unsigned int,
- struct flock64 *);
-#endif
-
-extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
-extern int fcntl_getlease(struct file *filp);
-
-/* fs/locks.c */
-void locks_free_lock_context(struct inode *inode);
-void locks_free_lock(struct file_lock *fl);
-extern void locks_init_lock(struct file_lock *);
-extern struct file_lock * locks_alloc_lock(void);
-extern void locks_copy_lock(struct file_lock *, struct file_lock *);
-extern void locks_copy_conflock(struct file_lock *, struct file_lock *);
-extern void locks_remove_posix(struct file *, fl_owner_t);
-extern void locks_remove_file(struct file *);
-extern void locks_release_private(struct file_lock *);
-extern void posix_test_lock(struct file *, struct file_lock *);
-extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
-extern int locks_delete_block(struct file_lock *);
-extern int vfs_test_lock(struct file *, struct file_lock *);
-extern int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);
-extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
-bool vfs_inode_has_locks(struct inode *inode);
-extern int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl);
-extern int __break_lease(struct inode *inode, unsigned int flags, unsigned int type);
-extern void lease_get_mtime(struct inode *, struct timespec64 *time);
-extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
-extern int vfs_setlease(struct file *, long, struct file_lock **, void **);
-extern int lease_modify(struct file_lock *, int, struct list_head *);
-
-struct notifier_block;
-extern int lease_register_notifier(struct notifier_block *);
-extern void lease_unregister_notifier(struct notifier_block *);
-
-struct files_struct;
-extern void show_fd_locks(struct seq_file *f,
- struct file *filp, struct files_struct *files);
-extern bool locks_owner_has_blockers(struct file_lock_context *flctx,
- fl_owner_t owner);
-
-static inline struct file_lock_context *
-locks_inode_context(const struct inode *inode)
-{
- return smp_load_acquire(&inode->i_flctx);
-}
-
-#else /* !CONFIG_FILE_LOCKING */
-static inline int fcntl_getlk(struct file *file, unsigned int cmd,
- struct flock __user *user)
-{
- return -EINVAL;
-}
-
-static inline int fcntl_setlk(unsigned int fd, struct file *file,
- unsigned int cmd, struct flock __user *user)
-{
- return -EACCES;
-}
-
-#if BITS_PER_LONG == 32
-static inline int fcntl_getlk64(struct file *file, unsigned int cmd,
- struct flock64 *user)
-{
- return -EINVAL;
-}
-
-static inline int fcntl_setlk64(unsigned int fd, struct file *file,
- unsigned int cmd, struct flock64 *user)
-{
- return -EACCES;
-}
-#endif
-static inline int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
-{
- return -EINVAL;
-}
-
-static inline int fcntl_getlease(struct file *filp)
-{
- return F_UNLCK;
-}
-
-static inline void
-locks_free_lock_context(struct inode *inode)
-{
-}
-
-static inline void locks_init_lock(struct file_lock *fl)
-{
- return;
-}
-
-static inline void locks_copy_conflock(struct file_lock *new, struct file_lock *fl)
-{
- return;
-}
-
-static inline void locks_copy_lock(struct file_lock *new, struct file_lock *fl)
-{
- return;
-}
-
-static inline void locks_remove_posix(struct file *filp, fl_owner_t owner)
-{
- return;
-}
-
-static inline void locks_remove_file(struct file *filp)
-{
- return;
-}
-
-static inline void posix_test_lock(struct file *filp, struct file_lock *fl)
-{
- return;
-}
-
-static inline int posix_lock_file(struct file *filp, struct file_lock *fl,
- struct file_lock *conflock)
-{
- return -ENOLCK;
-}
-
-static inline int locks_delete_block(struct file_lock *waiter)
-{
- return -ENOENT;
-}
-
-static inline int vfs_test_lock(struct file *filp, struct file_lock *fl)
-{
- return 0;
-}
-
-static inline int vfs_lock_file(struct file *filp, unsigned int cmd,
- struct file_lock *fl, struct file_lock *conf)
-{
- return -ENOLCK;
-}
-
-static inline int vfs_cancel_lock(struct file *filp, struct file_lock *fl)
-{
- return 0;
-}
-
-static inline bool vfs_inode_has_locks(struct inode *inode)
-{
- return false;
-}
-
-static inline int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl)
-{
- return -ENOLCK;
-}
-
-static inline int __break_lease(struct inode *inode, unsigned int mode, unsigned int type)
-{
- return 0;
-}
-
-static inline void lease_get_mtime(struct inode *inode,
- struct timespec64 *time)
-{
- return;
-}
-
-static inline int generic_setlease(struct file *filp, long arg,
- struct file_lock **flp, void **priv)
-{
- return -EINVAL;
-}
-
-static inline int vfs_setlease(struct file *filp, long arg,
- struct file_lock **lease, void **priv)
-{
- return -EINVAL;
-}
-
-static inline int lease_modify(struct file_lock *fl, int arg,
- struct list_head *dispose)
-{
- return -EINVAL;
-}
-
-struct files_struct;
-static inline void show_fd_locks(struct seq_file *f,
- struct file *filp, struct files_struct *files) {}
-static inline bool locks_owner_has_blockers(struct file_lock_context *flctx,
- fl_owner_t owner)
-{
- return false;
-}
-
-static inline struct file_lock_context *
-locks_inode_context(const struct inode *inode)
-{
- return NULL;
-}
-
-#endif /* !CONFIG_FILE_LOCKING */
-
static inline struct inode *file_inode(const struct file *f)
{
return f->f_inode;
return d_real(file->f_path.dentry, file_inode(file));
}
-static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
-{
- return locks_lock_inode_wait(locks_inode(filp), fl);
-}
-
struct fasync_struct {
rwlock_t fa_lock;
int magic;
#define MAX_RW_COUNT (INT_MAX & PAGE_MASK)
-#ifdef CONFIG_FILE_LOCKING
-static inline int break_lease(struct inode *inode, unsigned int mode)
-{
- /*
- * Since this check is lockless, we must ensure that any refcounts
- * taken are done before checking i_flctx->flc_lease. Otherwise, we
- * could end up racing with tasks trying to set a new lease on this
- * file.
- */
- smp_mb();
- if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
- return __break_lease(inode, mode, FL_LEASE);
- return 0;
-}
-
-static inline int break_deleg(struct inode *inode, unsigned int mode)
-{
- /*
- * Since this check is lockless, we must ensure that any refcounts
- * taken are done before checking i_flctx->flc_lease. Otherwise, we
- * could end up racing with tasks trying to set a new lease on this
- * file.
- */
- smp_mb();
- if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
- return __break_lease(inode, mode, FL_DELEG);
- return 0;
-}
-
-static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
-{
- int ret;
-
- ret = break_deleg(inode, O_WRONLY|O_NONBLOCK);
- if (ret == -EWOULDBLOCK && delegated_inode) {
- *delegated_inode = inode;
- ihold(inode);
- }
- return ret;
-}
-
-static inline int break_deleg_wait(struct inode **delegated_inode)
-{
- int ret;
-
- ret = break_deleg(*delegated_inode, O_WRONLY);
- iput(*delegated_inode);
- *delegated_inode = NULL;
- return ret;
-}
-
-static inline int break_layout(struct inode *inode, bool wait)
-{
- smp_mb();
- if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
- return __break_lease(inode,
- wait ? O_WRONLY : O_WRONLY | O_NONBLOCK,
- FL_LAYOUT);
- return 0;
-}
-
-#else /* !CONFIG_FILE_LOCKING */
-static inline int break_lease(struct inode *inode, unsigned int mode)
-{
- return 0;
-}
-
-static inline int break_deleg(struct inode *inode, unsigned int mode)
-{
- return 0;
-}
-
-static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
-{
- return 0;
-}
-
-static inline int break_deleg_wait(struct inode **delegated_inode)
-{
- BUG();
- return 0;
-}
-
-static inline int break_layout(struct inode *inode, bool wait)
-{
- return 0;
-}
-
-#endif /* CONFIG_FILE_LOCKING */
-
/* fs/open.c */
struct audit_names;
struct filename {
#define LOCKD_XDR_H
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/nfs.h>
#include <linux/sunrpc/xdr.h>
projects / platform / kernel / linux-rpi.git / commitdiff