diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 41 |
1 files changed, 22 insertions, 19 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 408fb1e77a0a..74a907b8b950 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -44,6 +44,7 @@ struct vm_area_struct; struct vfsmount; struct cred; struct swap_info_struct; +struct seq_file; extern void __init inode_init(void); extern void __init inode_init_early(void); @@ -300,7 +301,7 @@ size_t iov_iter_copy_from_user(struct page *page, struct iov_iter *i, unsigned long offset, size_t bytes); void iov_iter_advance(struct iov_iter *i, size_t bytes); int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes); -size_t iov_iter_single_seg_count(struct iov_iter *i); +size_t iov_iter_single_seg_count(const struct iov_iter *i); static inline void iov_iter_init(struct iov_iter *i, const struct iovec *iov, unsigned long nr_segs, @@ -768,7 +769,7 @@ struct file { } f_u; struct path f_path; #define f_dentry f_path.dentry -#define f_vfsmnt f_path.mnt + struct inode *f_inode; /* cached value */ const struct file_operations *f_op; /* @@ -1444,10 +1445,6 @@ static inline void sb_start_intwrite(struct super_block *sb) extern bool inode_owner_or_capable(const struct inode *inode); -/* not quite ready to be deprecated, but... */ -extern void lock_super(struct super_block *); -extern void unlock_super(struct super_block *); - /* * VFS helper functions.. */ @@ -1543,6 +1540,7 @@ struct file_operations { int (*setlease)(struct file *, long, struct file_lock **); long (*fallocate)(struct file *file, int mode, loff_t offset, loff_t len); + int (*show_fdinfo)(struct seq_file *m, struct file *f); }; struct inode_operations { @@ -1563,7 +1561,6 @@ struct inode_operations { int (*mknod) (struct inode *,struct dentry *,umode_t,dev_t); int (*rename) (struct inode *, struct dentry *, struct inode *, struct dentry *); - void (*truncate) (struct inode *); int (*setattr) (struct dentry *, struct iattr *); int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *); int (*setxattr) (struct dentry *, const char *,const void *,size_t,int); @@ -1578,8 +1575,6 @@ struct inode_operations { umode_t create_mode, int *opened); } ____cacheline_aligned; -struct seq_file; - ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, unsigned long nr_segs, unsigned long fast_segs, struct iovec *fast_pointer, @@ -1810,7 +1805,8 @@ struct file_system_type { #define FS_REQUIRES_DEV 1 #define FS_BINARY_MOUNTDATA 2 #define FS_HAS_SUBTYPE 4 -#define FS_REVAL_DOT 16384 /* Check the paths ".", ".." for staleness */ +#define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */ +#define FS_USERNS_DEV_MOUNT 16 /* A userns mount does not imply MNT_NODEV */ #define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */ struct dentry *(*mount) (struct file_system_type *, int, const char *, void *); @@ -1997,6 +1993,7 @@ struct filename { bool separate; /* should "name" be freed? */ }; +extern long vfs_truncate(struct path *, loff_t); extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs, struct file *filp); extern int do_fallocate(struct file *file, int mode, loff_t offset, @@ -2219,6 +2216,11 @@ static inline bool execute_ok(struct inode *inode) return (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode); } +static inline struct inode *file_inode(struct file *f) +{ + return f->f_inode; +} + /* * get_write_access() gets write permission for a file. * put_write_access() releases this write permission. @@ -2241,7 +2243,7 @@ static inline int get_write_access(struct inode *inode) } static inline int deny_write_access(struct file *file) { - struct inode *inode = file->f_path.dentry->d_inode; + struct inode *inode = file_inode(file); return atomic_dec_unless_positive(&inode->i_writecount) ? 0 : -ETXTBSY; } static inline void put_write_access(struct inode * inode) @@ -2251,7 +2253,7 @@ static inline void put_write_access(struct inode * inode) static inline void allow_write_access(struct file *file) { if (file) - atomic_inc(&file->f_path.dentry->d_inode->i_writecount); + atomic_inc(&file_inode(file)->i_writecount); } #ifdef CONFIG_IMA static inline void i_readcount_dec(struct inode *inode) @@ -2276,6 +2278,7 @@ static inline void i_readcount_inc(struct inode *inode) extern int do_pipe_flags(int *, int); extern int kernel_read(struct file *, loff_t, char *, unsigned long); +extern ssize_t kernel_write(struct file *, const char *, size_t, loff_t); extern struct file * open_exec(const char *); /* fs/dcache.c -- generic fs support functions */ @@ -2286,9 +2289,9 @@ extern ino_t find_inode_number(struct dentry *, struct qstr *); #include <linux/err.h> /* needed for stackable file system support */ -extern loff_t default_llseek(struct file *file, loff_t offset, int origin); +extern loff_t default_llseek(struct file *file, loff_t offset, int whence); -extern loff_t vfs_llseek(struct file *file, loff_t offset, int origin); +extern loff_t vfs_llseek(struct file *file, loff_t offset, int whence); extern int inode_init_always(struct super_block *, struct inode *); extern void inode_init_once(struct inode *); @@ -2396,11 +2399,11 @@ extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, extern void file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping); -extern loff_t noop_llseek(struct file *file, loff_t offset, int origin); -extern loff_t no_llseek(struct file *file, loff_t offset, int origin); -extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin); +extern loff_t noop_llseek(struct file *file, loff_t offset, int whence); +extern loff_t no_llseek(struct file *file, loff_t offset, int whence); +extern loff_t generic_file_llseek(struct file *file, loff_t offset, int whence); extern loff_t generic_file_llseek_size(struct file *file, loff_t offset, - int origin, loff_t maxsize, loff_t eof); + int whence, loff_t maxsize, loff_t eof); extern int generic_file_open(struct inode * inode, struct file * filp); extern int nonseekable_open(struct inode * inode, struct file * filp); @@ -2465,7 +2468,7 @@ extern int page_symlink(struct inode *inode, const char *symname, int len); extern const struct inode_operations page_symlink_inode_operations; extern int generic_readlink(struct dentry *, char __user *, int); extern void generic_fillattr(struct inode *, struct kstat *); -extern int vfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); +extern int vfs_getattr(struct path *, struct kstat *); void __inode_add_bytes(struct inode *inode, loff_t bytes); void inode_add_bytes(struct inode *inode, loff_t bytes); void inode_sub_bytes(struct inode *inode, loff_t bytes); |