net: rtnetlink: validate IFLA_MTU attribute in rtnl_create_link()

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

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 511fbaabf6248b67220c16653e491f74e3f046e7..ea85b870d9729f44436ee9a2ed88d80fe741aa2f 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -72,6 +72,8 @@ extern struct inodes_stat_t inodes_stat;
 extern int leases_enable, lease_break_time;
 extern int sysctl_protected_symlinks;
 extern int sysctl_protected_hardlinks;
+extern int sysctl_protected_fifos;
+extern int sysctl_protected_regular;
 
 typedef __kernel_rwf_t rwf_t;
 
@@ -146,6 +148,9 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
 /* Has write method(s) */
 #define FMODE_CAN_WRITE         ((__force fmode_t)0x40000)
 
+/* File is stream-like */
+#define FMODE_STREAM           ((__force fmode_t)0x200000)
+
 /* File was opened by fanotify and shouldn't generate fanotify events */
 #define FMODE_NONOTIFY         ((__force fmode_t)0x4000000)
 
@@ -1265,6 +1270,7 @@ 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);
@@ -1312,6 +1318,8 @@ extern int send_sigurg(struct fown_struct *fown);
 #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 */
+#define SB_I_MULTIROOT 0x00000010      /* Multiple roots to the dentry tree */
 
 /* sb->s_iflags to limit user namespace mounts */
 #define SB_I_USERNS_VISIBLE            0x00000010 /* fstype already mounted */
@@ -1712,6 +1720,7 @@ 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);
@@ -1782,6 +1791,12 @@ 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_read(struct file *, char __user *, size_t, loff_t *);
 extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *);
@@ -1792,8 +1807,10 @@ extern ssize_t vfs_copy_file_range(struct file *, loff_t , struct file *,
 extern int vfs_clone_file_prep_inodes(struct inode *inode_in, loff_t pos_in,
                                      struct inode *inode_out, loff_t pos_out,
                                      u64 *len, bool is_dedupe);
+extern int do_clone_file_range(struct file *file_in, loff_t pos_in,
+                              struct file *file_out, loff_t pos_out, u64 len);
 extern int vfs_clone_file_range(struct file *file_in, loff_t pos_in,
-               struct file *file_out, loff_t pos_out, u64 len);
+                               struct file *file_out, loff_t pos_out, u64 len);
 extern int vfs_dedupe_file_range_compare(struct inode *src, loff_t srcoff,
                                         struct inode *dest, loff_t destoff,
                                         loff_t len, bool *is_same);
@@ -1832,6 +1849,10 @@ 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
 };
 
 /*
@@ -2201,6 +2222,7 @@ 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;
@@ -2403,6 +2425,7 @@ extern struct file *filp_open(const char *, int, umode_t);
 extern struct file *file_open_root(struct dentry *, struct vfsmount *,
                                   const char *, int, umode_t);
 extern struct file * dentry_open(const struct path *, int, const struct cred *);
+extern struct file *filp_clone_open(struct file *);
 extern int filp_close(struct file *, fl_owner_t id);
 
 extern struct filename *getname_flags(const char __user *, int, int *);
@@ -2481,6 +2504,7 @@ 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;
@@ -2551,7 +2575,7 @@ static inline void unregister_chrdev(unsigned int major, const char *name)
 #define BLKDEV_MAJOR_MAX       512
 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
@@ -2590,6 +2614,8 @@ extern int filemap_flush(struct address_space *);
 extern int filemap_fdatawait_keep_errors(struct address_space *mapping);
 extern int filemap_fdatawait_range(struct address_space *, loff_t lstart,
                                   loff_t lend);
+extern int filemap_fdatawait_range_keep_errors(struct address_space *mapping,
+               loff_t start_byte, loff_t end_byte);
 
 static inline int filemap_fdatawait(struct address_space *mapping)
 {
@@ -2729,19 +2755,6 @@ static inline void file_end_write(struct file *file)
        __sb_end_write(file_inode(file)->i_sb, SB_FREEZE_WRITE);
 }
 
-static inline int do_clone_file_range(struct file *file_in, loff_t pos_in,
-                                     struct file *file_out, loff_t pos_out,
-                                     u64 len)
-{
-       int ret;
-
-       file_start_write(file_out);
-       ret = vfs_clone_file_range(file_in, pos_in, file_out, pos_out, len);
-       file_end_write(file_out);
-
-       return ret;
-}
-
 /*
  * get_write_access() gets write permission for a file.
  * put_write_access() releases this write permission.
@@ -2972,6 +2985,7 @@ extern loff_t no_seek_end_llseek_size(struct file *, loff_t, int, loff_t);
 extern loff_t no_seek_end_llseek(struct file *, loff_t, int);
 extern int generic_file_open(struct inode * inode, struct file * filp);
 extern int nonseekable_open(struct inode * inode, struct file * filp);
+extern int stream_open(struct inode * inode, struct file * filp);
 
 #ifdef CONFIG_BLOCK
 typedef void (dio_submit_t)(struct bio *bio, struct inode *inode,
@@ -2992,6 +3006,7 @@ enum {
 };
 
 void dio_end_io(struct bio *bio);
+void dio_warn_stale_pagecache(struct file *filp);
 
 ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
                             struct block_device *bdev, struct iov_iter *iter,
@@ -3204,7 +3219,7 @@ static inline bool vma_is_fsdax(struct vm_area_struct *vma)
        if (!vma_is_dax(vma))
                return false;
        inode = file_inode(vma->vm_file);
-       if (inode->i_mode == S_IFCHR)
+       if (S_ISCHR(inode->i_mode))
                return false; /* device-dax */
        return true;
 }
@@ -3408,6 +3423,7 @@ 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 */