UBUNTU: SAUCE: Import aufs driver

[mirror_ubuntu-artful-kernel.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 6e1fd5d2124877c16bbbfab4487a772c8f7e37ee..a25f28560a8d9a4ba6ec1621cc065a3048bb93ec 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -907,9 +907,9 @@ static inline struct file *get_file(struct file *f)
 /* Page cache limit. The filesystems should put that into their s_maxbytes 
    limits, otherwise bad things can happen in VM. */ 
 #if BITS_PER_LONG==32
-#define MAX_LFS_FILESIZE       (((loff_t)PAGE_SIZE << (BITS_PER_LONG-1))-1)
+#define MAX_LFS_FILESIZE       ((loff_t)ULONG_MAX << PAGE_SHIFT)
 #elif BITS_PER_LONG==64
-#define MAX_LFS_FILESIZE       ((loff_t)0x7fffffffffffffffLL)
+#define MAX_LFS_FILESIZE       ((loff_t)LLONG_MAX)
 #endif
 
 #define FL_POSIX       1
@@ -1262,6 +1262,7 @@ extern void fasync_free(struct fasync_struct *);
 /* can be called from interrupts */
 extern void kill_fasync(struct fasync_struct **, int, int);
 
+extern int setfl(int fd, struct file * filp, unsigned long arg);
 extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
 extern int f_setown(struct file *filp, unsigned long arg, int force);
 extern void f_delown(struct file *filp);
@@ -1284,6 +1285,7 @@ struct mm_struct;
 #define SB_I_CGROUPWB  0x00000001      /* cgroup-aware writeback enabled */
 #define SB_I_NOEXEC    0x00000002      /* Ignore executables on this fs */
 #define SB_I_NODEV     0x00000004      /* Ignore devices on this fs */
+#define SB_I_NOSUID    0x00000008      /* Ignore suid on this fs */
 
 /* sb->s_iflags to limit user namespace mounts */
 #define SB_I_USERNS_VISIBLE            0x00000010 /* fstype already mounted */
@@ -1683,6 +1685,7 @@ struct file_operations {
        ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
        unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
        int (*check_flags)(int);
+       int (*setfl)(struct file *, unsigned long);
        int (*flock) (struct file *, int, struct file_lock *);
        ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
        ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
@@ -1753,6 +1756,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
                              struct iovec *fast_pointer,
                              struct iovec **ret_pointer);
 
+typedef ssize_t (*vfs_readf_t)(struct file *, char __user *, size_t, loff_t *);
+typedef ssize_t (*vfs_writef_t)(struct file *, const char __user *, size_t,
+                               loff_t *);
+vfs_readf_t vfs_readf(struct file *file);
+vfs_writef_t vfs_writef(struct file *file);
+
 extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
 extern ssize_t __vfs_write(struct file *, const char __user *, size_t, loff_t *);
 extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
@@ -1806,6 +1815,10 @@ struct super_operations {
                                  struct shrink_control *);
        long (*free_cached_objects)(struct super_block *,
                                    struct shrink_control *);
+#if defined(CONFIG_BLK_DEV_LOOP) ||  defined(CONFIG_BLK_DEV_LOOP_MODULE)
+       /* and aufs */
+       struct file *(*real_loop)(struct file *);
+#endif
 };
 
 /*
@@ -2157,6 +2170,7 @@ extern int current_umask(void);
 extern void ihold(struct inode * inode);
 extern void iput(struct inode *);
 extern int generic_update_time(struct inode *, struct timespec *, int);
+extern int update_time(struct inode *, struct timespec *, int);
 
 /* /sys/fs */
 extern struct kobject *fs_kobj;
@@ -2437,6 +2451,7 @@ static inline bool sb_is_blkdev_sb(struct super_block *sb)
        return false;
 }
 #endif
+extern int __sync_filesystem(struct super_block *, int);
 extern int sync_filesystem(struct super_block *);
 extern const struct file_operations def_blk_fops;
 extern const struct file_operations def_chr_fops;
@@ -2503,7 +2518,7 @@ static inline void unregister_chrdev(unsigned int major, const char *name)
 #define BLKDEV_MAJOR_HASH_SIZE 255
 extern const char *__bdevname(dev_t, char *buffer);
 extern const char *bdevname(struct block_device *bdev, char *buffer);
-extern struct block_device *lookup_bdev(const char *);
+extern struct block_device *lookup_bdev(const char *, int mask);
 extern void blkdev_show(struct seq_file *,off_t);
 
 #else
@@ -3328,6 +3343,7 @@ static inline bool dir_relax_shared(struct inode *inode)
 }
 
 extern bool path_noexec(const struct path *path);
+extern bool path_nosuid(const struct path *path);
 extern void inode_nohighmem(struct inode *inode);
 
 #endif /* _LINUX_FS_H */