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-rw-r--r--include/linux/fs.h128
1 files changed, 73 insertions, 55 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 8793d43cfd5a..731262c3fbb7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -31,6 +31,7 @@
#include <linux/blk_types.h>
#include <linux/workqueue.h>
#include <linux/percpu-rwsem.h>
+#include <linux/delayed_call.h>
#include <asm/byteorder.h>
#include <uapi/linux/fs.h>
@@ -1042,7 +1043,7 @@ 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 file_lock_context *ctx);
+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);
@@ -1103,7 +1104,7 @@ static inline int fcntl_getlease(struct file *filp)
}
static inline void
-locks_free_lock_context(struct file_lock_context *ctx)
+locks_free_lock_context(struct inode *inode)
{
}
@@ -1629,16 +1630,21 @@ struct file_operations {
#ifndef CONFIG_MMU
unsigned (*mmap_capabilities)(struct file *);
#endif
+ ssize_t (*copy_file_range)(struct file *, loff_t, struct file *,
+ loff_t, size_t, unsigned int);
+ int (*clone_file_range)(struct file *, loff_t, struct file *, loff_t,
+ u64);
+ ssize_t (*dedupe_file_range)(struct file *, u64, u64, struct file *,
+ u64);
};
struct inode_operations {
struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
- const char * (*follow_link) (struct dentry *, void **);
+ const char * (*get_link) (struct dentry *, struct inode *, struct delayed_call *);
int (*permission) (struct inode *, int);
struct posix_acl * (*get_acl)(struct inode *, int);
int (*readlink) (struct dentry *, char __user *,int);
- void (*put_link) (struct inode *, void *);
int (*create) (struct inode *,struct dentry *, umode_t, bool);
int (*link) (struct dentry *,struct inode *,struct dentry *);
@@ -1680,6 +1686,12 @@ extern ssize_t vfs_readv(struct file *, const struct iovec __user *,
unsigned long, loff_t *);
extern ssize_t vfs_writev(struct file *, const struct iovec __user *,
unsigned long, loff_t *);
+extern ssize_t vfs_copy_file_range(struct file *, loff_t , struct file *,
+ loff_t, size_t, unsigned int);
+extern int vfs_clone_file_range(struct file *file_in, loff_t pos_in,
+ struct file *file_out, loff_t pos_out, u64 len);
+extern int vfs_dedupe_file_range(struct file *file,
+ struct file_dedupe_range *same);
struct super_operations {
struct inode *(*alloc_inode)(struct super_block *sb);
@@ -2027,12 +2039,9 @@ extern struct kobject *fs_kobj;
#define MAX_RW_COUNT (INT_MAX & PAGE_CACHE_MASK)
-#define FLOCK_VERIFY_READ 1
-#define FLOCK_VERIFY_WRITE 2
-
-#ifdef CONFIG_FILE_LOCKING
+#ifdef CONFIG_MANDATORY_FILE_LOCKING
extern int locks_mandatory_locked(struct file *);
-extern int locks_mandatory_area(int, struct inode *, struct file *, loff_t, size_t);
+extern int locks_mandatory_area(struct inode *, struct file *, loff_t, loff_t, unsigned char);
/*
* Candidates for mandatory locking have the setgid bit set
@@ -2062,19 +2071,59 @@ static inline int locks_verify_locked(struct file *file)
}
static inline int locks_verify_truncate(struct inode *inode,
- struct file *filp,
+ struct file *f,
loff_t size)
{
- if (inode->i_flctx && mandatory_lock(inode))
- return locks_mandatory_area(
- FLOCK_VERIFY_WRITE, inode, filp,
- size < inode->i_size ? size : inode->i_size,
- (size < inode->i_size ? inode->i_size - size
- : size - inode->i_size)
- );
+ if (!inode->i_flctx || !mandatory_lock(inode))
+ return 0;
+
+ if (size < inode->i_size) {
+ return locks_mandatory_area(inode, f, size, inode->i_size - 1,
+ F_WRLCK);
+ } else {
+ return locks_mandatory_area(inode, f, inode->i_size, size - 1,
+ F_WRLCK);
+ }
+}
+
+#else /* !CONFIG_MANDATORY_FILE_LOCKING */
+
+static inline int locks_mandatory_locked(struct file *file)
+{
+ return 0;
+}
+
+static inline int locks_mandatory_area(struct inode *inode, struct file *filp,
+ loff_t start, loff_t end, unsigned char type)
+{
+ return 0;
+}
+
+static inline int __mandatory_lock(struct inode *inode)
+{
+ return 0;
+}
+
+static inline int mandatory_lock(struct inode *inode)
+{
+ return 0;
+}
+
+static inline int locks_verify_locked(struct file *file)
+{
+ return 0;
+}
+
+static inline int locks_verify_truncate(struct inode *inode, struct file *filp,
+ size_t size)
+{
return 0;
}
+#endif /* CONFIG_MANDATORY_FILE_LOCKING */
+
+
+#ifdef CONFIG_FILE_LOCKING
static inline int break_lease(struct inode *inode, unsigned int mode)
{
/*
@@ -2136,39 +2185,6 @@ static inline int break_layout(struct inode *inode, bool wait)
}
#else /* !CONFIG_FILE_LOCKING */
-static inline int locks_mandatory_locked(struct file *file)
-{
- return 0;
-}
-
-static inline int locks_mandatory_area(int rw, struct inode *inode,
- struct file *filp, loff_t offset,
- size_t count)
-{
- return 0;
-}
-
-static inline int __mandatory_lock(struct inode *inode)
-{
- return 0;
-}
-
-static inline int mandatory_lock(struct inode *inode)
-{
- return 0;
-}
-
-static inline int locks_verify_locked(struct file *file)
-{
- return 0;
-}
-
-static inline int locks_verify_truncate(struct inode *inode, struct file *filp,
- size_t size)
-{
- return 0;
-}
-
static inline int break_lease(struct inode *inode, unsigned int mode)
{
return 0;
@@ -2738,14 +2754,14 @@ extern const struct file_operations generic_ro_fops;
extern int readlink_copy(char __user *, int, const char *);
extern int page_readlink(struct dentry *, char __user *, int);
-extern const char *page_follow_link_light(struct dentry *, void **);
-extern void page_put_link(struct inode *, void *);
+extern const char *page_get_link(struct dentry *, struct inode *,
+ struct delayed_call *);
+extern void page_put_link(void *);
extern int __page_symlink(struct inode *inode, const char *symname, int len,
int nofs);
extern int page_symlink(struct inode *inode, const char *symname, int len);
extern const struct inode_operations page_symlink_inode_operations;
-extern void kfree_put_link(struct inode *, void *);
-extern void free_page_put_link(struct inode *, void *);
+extern void kfree_link(void *);
extern int generic_readlink(struct dentry *, char __user *, int);
extern void generic_fillattr(struct inode *, struct kstat *);
int vfs_getattr_nosec(struct path *path, struct kstat *stat);
@@ -2756,7 +2772,8 @@ void __inode_sub_bytes(struct inode *inode, loff_t bytes);
void inode_sub_bytes(struct inode *inode, loff_t bytes);
loff_t inode_get_bytes(struct inode *inode);
void inode_set_bytes(struct inode *inode, loff_t bytes);
-const char *simple_follow_link(struct dentry *, void **);
+const char *simple_get_link(struct dentry *, struct inode *,
+ struct delayed_call *);
extern const struct inode_operations simple_symlink_inode_operations;
extern int iterate_dir(struct file *, struct dir_context *);
@@ -3025,5 +3042,6 @@ static inline bool dir_relax(struct inode *inode)
}
extern bool path_noexec(const struct path *path);
+extern void inode_nohighmem(struct inode *inode);
#endif /* _LINUX_FS_H */
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