#define FS_NOTAIL_FL 0x00008000 /* file tail should not be merged */
#define FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
#define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
+#define FS_EXTENT_FL 0x00080000 /* Extents */
+#define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */
#define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
#define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
#include <linux/radix-tree.h>
#include <linux/prio_tree.h>
#include <linux/init.h>
-#include <linux/sched.h>
+#include <linux/pid.h>
#include <linux/mutex.h>
#include <asm/atomic.h>
struct list_head i_dentry;
unsigned long i_ino;
atomic_t i_count;
- umode_t i_mode;
unsigned int i_nlink;
uid_t i_uid;
gid_t i_gid;
dev_t i_rdev;
+ unsigned long i_version;
loff_t i_size;
+#ifdef __NEED_I_SIZE_ORDERED
+ seqcount_t i_size_seqcount;
+#endif
struct timespec i_atime;
struct timespec i_mtime;
struct timespec i_ctime;
unsigned int i_blkbits;
- unsigned long i_version;
blkcnt_t i_blocks;
unsigned short i_bytes;
+ umode_t i_mode;
spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */
struct mutex i_mutex;
struct rw_semaphore i_alloc_sem;
void *i_security;
#endif
void *i_private; /* fs or device private pointer */
-#ifdef __NEED_I_SIZE_ORDERED
- seqcount_t i_size_seqcount;
-#endif
};
/*
I_MUTEX_QUOTA
};
+extern void inode_double_lock(struct inode *inode1, struct inode *inode2);
+extern void inode_double_unlock(struct inode *inode1, struct inode *inode2);
+
/*
* NOTE: in a 32bit arch with a preemptable kernel and
* an UP compile the i_size_read/write must be atomic
* cmpxchg8b without the need of the lock prefix). For SMP compiles
* and 64bit archs it makes no difference if preempt is enabled or not.
*/
-static inline loff_t i_size_read(struct inode *inode)
+static inline loff_t i_size_read(const struct inode *inode)
{
#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
loff_t i_size;
#endif
}
-
+/*
+ * NOTE: unlike i_size_read(), i_size_write() does need locking around it
+ * (normally i_mutex), otherwise on 32bit/SMP an update of i_size_seqcount
+ * can be lost, resulting in subsequent i_size_read() calls spinning forever.
+ */
static inline void i_size_write(struct inode *inode, loff_t i_size)
{
#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
#endif
}
-static inline unsigned iminor(struct inode *inode)
+static inline unsigned iminor(const struct inode *inode)
{
return MINOR(inode->i_rdev);
}
-static inline unsigned imajor(struct inode *inode)
+static inline unsigned imajor(const struct inode *inode)
{
return MAJOR(inode->i_rdev);
}
struct fown_struct {
rwlock_t lock; /* protects pid, uid, euid fields */
- int pid; /* pid or -pgrp where SIGIO should be sent */
+ struct pid *pid; /* pid or -pgrp where SIGIO should be sent */
+ enum pid_type pid_type; /* Kind of process group SIGIO should be sent to */
uid_t uid, euid; /* uid/euid of process setting the owner */
int signum; /* posix.1b rt signal to be delivered on IO */
};
/* only for net: no internal synchronization */
extern void __kill_fasync(struct fasync_struct *, int, int);
+extern int __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);
+extern pid_t f_getown(struct file *filp);
extern int send_sigurg(struct fown_struct *fown);
/*
#define vfs_check_frozen(sb, level) \
wait_event((sb)->s_wait_unfrozen, ((sb)->s_frozen < (level)))
-static inline void get_fs_excl(void)
-{
- atomic_inc(¤t->fs_excl);
-}
-
-static inline void put_fs_excl(void)
-{
- atomic_dec(¤t->fs_excl);
-}
-
-static inline int has_fs_excl(void)
-{
- return atomic_read(¤t->fs_excl);
-}
+#define get_fs_excl() atomic_inc(¤t->fs_excl)
+#define put_fs_excl() atomic_dec(¤t->fs_excl)
+#define has_fs_excl() atomic_read(¤t->fs_excl)
-
-/*
- * Superblock locking.
- */
-static inline void lock_super(struct super_block * sb)
-{
- get_fs_excl();
- mutex_lock(&sb->s_lock);
-}
-
-static inline void unlock_super(struct super_block * sb)
-{
- put_fs_excl();
- mutex_unlock(&sb->s_lock);
-}
+/* not quite ready to be deprecated, but... */
+extern void lock_super(struct super_block *);
+extern void unlock_super(struct super_block *);
/*
* VFS helper functions..
* This allows the kernel to read directories into kernel space or
* to have different dirent layouts depending on the binary type.
*/
-typedef int (*filldir_t)(void *, const char *, int, loff_t, ino_t, unsigned);
+typedef int (*filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
struct block_device_operations {
int (*open) (struct inode *, struct file *);
struct module *owner;
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
- ssize_t (*aio_read) (struct kiocb *, char __user *, size_t, loff_t);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
- ssize_t (*aio_write) (struct kiocb *, const char __user *, size_t, loff_t);
+ ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
+ ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
int (*readdir) (struct file *, void *, filldir_t);
unsigned int (*poll) (struct file *, struct poll_table_struct *);
int (*ioctl) (struct inode *, struct file *, unsigned int, unsigned long);
int (*aio_fsync) (struct kiocb *, int datasync);
int (*fasync) (int, struct file *, int);
int (*lock) (struct file *, int, struct file_lock *);
- ssize_t (*readv) (struct file *, const struct iovec *, unsigned long, loff_t *);
- ssize_t (*writev) (struct file *, const struct iovec *, unsigned long, loff_t *);
ssize_t (*sendfile) (struct file *, loff_t *, size_t, read_actor_t, void *);
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);
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,
+ struct iovec **ret_pointer);
+
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_readv(struct file *, const struct iovec __user *,
__mark_inode_dirty(inode, I_DIRTY_SYNC);
}
-static inline void inode_inc_link_count(struct inode *inode)
+static inline void inc_nlink(struct inode *inode)
{
inode->i_nlink++;
+}
+
+static inline void inode_inc_link_count(struct inode *inode)
+{
+ inc_nlink(inode);
mark_inode_dirty(inode);
}
-static inline void inode_dec_link_count(struct inode *inode)
+static inline void drop_nlink(struct inode *inode)
{
inode->i_nlink--;
+}
+
+static inline void clear_nlink(struct inode *inode)
+{
+ inode->i_nlink = 0;
+}
+
+static inline void inode_dec_link_count(struct inode *inode)
+{
+ drop_nlink(inode);
mark_inode_dirty(inode);
}
extern void __init vfs_caches_init_early(void);
extern void __init vfs_caches_init(unsigned long);
-#define __getname() kmem_cache_alloc(names_cachep, SLAB_KERNEL)
+extern struct kmem_cache *names_cachep;
+
+#define __getname() kmem_cache_alloc(names_cachep, GFP_KERNEL)
#define __putname(name) kmem_cache_free(names_cachep, (void *)(name))
#ifndef CONFIG_AUDITSYSCALL
#define putname(name) __putname(name)
#ifdef CONFIG_BLOCK
extern int ioctl_by_bdev(struct block_device *, unsigned, unsigned long);
extern int blkdev_ioctl(struct inode *, struct file *, unsigned, unsigned long);
+extern int blkdev_driver_ioctl(struct inode *inode, struct file *file,
+ struct gendisk *disk, unsigned cmd,
+ unsigned long arg);
extern long compat_blkdev_ioctl(struct file *, unsigned, unsigned long);
extern int blkdev_get(struct block_device *, mode_t, unsigned);
extern int blkdev_put(struct block_device *);
atomic_inc(&file->f_dentry->d_inode->i_writecount);
}
extern int do_pipe(int *);
+extern struct file *create_read_pipe(struct file *f);
+extern struct file *create_write_pipe(void);
+extern void free_write_pipe(struct file *);
extern int open_namei(int dfd, const char *, int, int, struct nameidata *);
extern int may_open(struct nameidata *, int, int);
extern void clear_inode(struct inode *);
extern void destroy_inode(struct inode *);
extern struct inode *new_inode(struct super_block *);
+extern int __remove_suid(struct dentry *, int);
+extern int should_remove_suid(struct dentry *);
extern int remove_suid(struct dentry *);
extern void remove_dquot_ref(struct super_block *, int, struct list_head *);
extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);
extern int file_read_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size);
extern int file_send_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size);
-extern ssize_t generic_file_read(struct file *, char __user *, size_t, loff_t *);
int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk);
-extern ssize_t generic_file_write(struct file *, const char __user *, size_t, loff_t *);
-extern ssize_t generic_file_aio_read(struct kiocb *, char __user *, size_t, loff_t);
-extern ssize_t __generic_file_aio_read(struct kiocb *, const struct iovec *, unsigned long, loff_t *);
-extern ssize_t generic_file_aio_write(struct kiocb *, const char __user *, size_t, loff_t);
+extern ssize_t generic_file_aio_read(struct kiocb *, const struct iovec *, unsigned long, loff_t);
+extern ssize_t generic_file_aio_write(struct kiocb *, const struct iovec *, unsigned long, loff_t);
extern ssize_t generic_file_aio_write_nolock(struct kiocb *, const struct iovec *,
- unsigned long, loff_t *);
+ unsigned long, loff_t);
extern ssize_t generic_file_direct_write(struct kiocb *, const struct iovec *,
unsigned long *, loff_t, loff_t *, size_t, size_t);
extern ssize_t generic_file_buffered_write(struct kiocb *, const struct iovec *,
unsigned long, loff_t, loff_t *, size_t, ssize_t);
extern ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos);
extern ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos);
-ssize_t generic_file_write_nolock(struct file *file, const struct iovec *iov,
- unsigned long nr_segs, loff_t *ppos);
extern ssize_t generic_file_sendfile(struct file *, loff_t *, size_t, read_actor_t, void *);
extern void do_generic_mapping_read(struct address_space *mapping,
struct file_ra_state *, struct file *,
struct pipe_inode_info *, size_t, unsigned int);
extern ssize_t generic_file_splice_write(struct pipe_inode_info *,
struct file *, loff_t *, size_t, unsigned int);
+extern ssize_t generic_file_splice_write_nolock(struct pipe_inode_info *,
+ struct file *, loff_t *, size_t, unsigned int);
extern ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe,
struct file *out, loff_t *, size_t len, unsigned int flags);
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 ssize_t generic_file_readv(struct file *filp, const struct iovec *iov,
- unsigned long nr_segs, loff_t *ppos);
-ssize_t generic_file_writev(struct file *filp, const struct iovec *iov,
- unsigned long nr_segs, loff_t *ppos);
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 remote_llseek(struct file *file, loff_t offset, int origin);