diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 239 |
1 files changed, 142 insertions, 97 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 1eb29399a4f..cdf9495df20 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -34,9 +34,9 @@ #define SEEK_MAX SEEK_END struct fstrim_range { - uint64_t start; - uint64_t len; - uint64_t minlen; + __u64 start; + __u64 len; + __u64 minlen; }; /* And dynamically-tunable limits and defaults: */ @@ -102,6 +102,9 @@ struct inodes_stat_t { /* File is huge (eg. /dev/kmem): treat loff_t as unsigned */ #define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000) +/* File is opened with O_PATH; almost nothing can be done with it */ +#define FMODE_PATH ((__force fmode_t)0x4000) + /* File was opened by fanotify and shouldn't generate fanotify events */ #define FMODE_NONOTIFY ((__force fmode_t)0x1000000) @@ -135,16 +138,10 @@ struct inodes_stat_t { * block layer could (in theory) choose to ignore this * request if it runs into resource problems. * WRITE A normal async write. Device will be plugged. - * WRITE_SYNC_PLUG Synchronous write. Identical to WRITE, but passes down + * WRITE_SYNC Synchronous write. Identical to WRITE, but passes down * the hint that someone will be waiting on this IO - * shortly. The device must still be unplugged explicitly, - * WRITE_SYNC_PLUG does not do this as we could be - * submitting more writes before we actually wait on any - * of them. - * WRITE_SYNC Like WRITE_SYNC_PLUG, but also unplugs the device - * immediately after submission. The write equivalent - * of READ_SYNC. - * WRITE_ODIRECT_PLUG Special case write for O_DIRECT only. + * shortly. The write equivalent of READ_SYNC. + * WRITE_ODIRECT Special case write for O_DIRECT only. * WRITE_FLUSH Like WRITE_SYNC but with preceding cache flush. * WRITE_FUA Like WRITE_SYNC but data is guaranteed to be on * non-volatile media on completion. @@ -160,18 +157,14 @@ struct inodes_stat_t { #define WRITE RW_MASK #define READA RWA_MASK -#define READ_SYNC (READ | REQ_SYNC | REQ_UNPLUG) +#define READ_SYNC (READ | REQ_SYNC) #define READ_META (READ | REQ_META) -#define WRITE_SYNC_PLUG (WRITE | REQ_SYNC | REQ_NOIDLE) -#define WRITE_SYNC (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG) -#define WRITE_ODIRECT_PLUG (WRITE | REQ_SYNC) +#define WRITE_SYNC (WRITE | REQ_SYNC | REQ_NOIDLE) +#define WRITE_ODIRECT (WRITE | REQ_SYNC) #define WRITE_META (WRITE | REQ_META) -#define WRITE_FLUSH (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ - REQ_FLUSH) -#define WRITE_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ - REQ_FUA) -#define WRITE_FLUSH_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ - REQ_FLUSH | REQ_FUA) +#define WRITE_FLUSH (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FLUSH) +#define WRITE_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FUA) +#define WRITE_FLUSH_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FLUSH | REQ_FUA) #define SEL_IN 1 #define SEL_OUT 2 @@ -242,6 +235,7 @@ struct inodes_stat_t { #define S_SWAPFILE 256 /* Do not truncate: swapon got its bmaps */ #define S_PRIVATE 512 /* Inode is fs-internal */ #define S_IMA 1024 /* Inode has an associated IMA struct */ +#define S_AUTOMOUNT 2048 /* Automount/referral quasi-directory */ /* * Note that nosuid etc flags are inode-specific: setting some file-system @@ -277,6 +271,7 @@ struct inodes_stat_t { #define IS_SWAPFILE(inode) ((inode)->i_flags & S_SWAPFILE) #define IS_PRIVATE(inode) ((inode)->i_flags & S_PRIVATE) #define IS_IMA(inode) ((inode)->i_flags & S_IMA) +#define IS_AUTOMOUNT(inode) ((inode)->i_flags & S_AUTOMOUNT) /* the read-only stuff doesn't really belong here, but any other place is probably as bad and I don't want to create yet another include file. */ @@ -362,6 +357,7 @@ struct inodes_stat_t { #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_NOCOW_FL 0x00800000 /* Do not cow file */ #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ #define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ @@ -382,7 +378,6 @@ struct inodes_stat_t { #include <linux/path.h> #include <linux/stat.h> #include <linux/cache.h> -#include <linux/kobject.h> #include <linux/list.h> #include <linux/radix-tree.h> #include <linux/prio_tree.h> @@ -392,6 +387,7 @@ struct inodes_stat_t { #include <linux/capability.h> #include <linux/semaphore.h> #include <linux/fiemap.h> +#include <linux/rculist_bl.h> #include <asm/atomic.h> #include <asm/byteorder.h> @@ -401,6 +397,7 @@ struct hd_geometry; struct iovec; struct nameidata; struct kiocb; +struct kobject; struct pipe_inode_info; struct poll_table_struct; struct kstatfs; @@ -467,7 +464,7 @@ struct iattr { struct timespec ia_ctime; /* - * Not an attribute, but an auxilary info for filesystems wanting to + * Not an attribute, but an auxiliary info for filesystems wanting to * implement an ftruncate() like method. NOTE: filesystem should * check for (ia_valid & ATTR_FILE), and not for (ia_file != NULL). */ @@ -580,7 +577,6 @@ typedef int (*read_actor_t)(read_descriptor_t *, struct page *, struct address_space_operations { int (*writepage)(struct page *page, struct writeback_control *wbc); int (*readpage)(struct file *, struct page *); - void (*sync_page)(struct page *); /* Write back some dirty pages from this mapping. */ int (*writepages)(struct address_space *, struct writeback_control *); @@ -602,6 +598,7 @@ struct address_space_operations { sector_t (*bmap)(struct address_space *, sector_t); void (*invalidatepage) (struct page *, unsigned long); int (*releasepage) (struct page *, gfp_t); + void (*freepage)(struct page *); ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov, loff_t offset, unsigned long nr_segs); int (*get_xip_mem)(struct address_space *, pgoff_t, int, @@ -615,6 +612,8 @@ struct address_space_operations { int (*error_remove_page)(struct address_space *, struct page *); }; +extern const struct address_space_operations empty_aops; + /* * pagecache_write_begin/pagecache_write_end must be used by general code * to write into the pagecache. @@ -645,25 +644,27 @@ struct address_space { spinlock_t private_lock; /* for use by the address_space */ struct list_head private_list; /* ditto */ struct address_space *assoc_mapping; /* ditto */ + struct mutex unmap_mutex; /* to protect unmapping */ } __attribute__((aligned(sizeof(long)))); /* * On most architectures that alignment is already the case; but - * must be enforced here for CRIS, to let the least signficant bit + * must be enforced here for CRIS, to let the least significant bit * of struct page's "mapping" pointer be used for PAGE_MAPPING_ANON. */ struct block_device { dev_t bd_dev; /* not a kdev_t - it's a search key */ + int bd_openers; struct inode * bd_inode; /* will die */ struct super_block * bd_super; - int bd_openers; struct mutex bd_mutex; /* open/close mutex */ struct list_head bd_inodes; void * bd_claiming; void * bd_holder; int bd_holders; + bool bd_write_holder; #ifdef CONFIG_SYSFS - struct list_head bd_holder_list; + struct list_head bd_holder_disks; #endif struct block_device * bd_contains; unsigned bd_block_size; @@ -732,16 +733,31 @@ struct posix_acl; #define ACL_NOT_CACHED ((void *)(-1)) struct inode { + /* RCU path lookup touches following: */ + umode_t i_mode; + uid_t i_uid; + gid_t i_gid; + const struct inode_operations *i_op; + struct super_block *i_sb; + + spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ + unsigned int i_flags; + struct mutex i_mutex; + + unsigned long i_state; + unsigned long dirtied_when; /* jiffies of first dirtying */ + struct hlist_node i_hash; struct list_head i_wb_list; /* backing dev IO list */ struct list_head i_lru; /* inode LRU list */ struct list_head i_sb_list; - struct list_head i_dentry; + union { + struct list_head i_dentry; + struct rcu_head i_rcu; + }; unsigned long i_ino; atomic_t i_count; unsigned int i_nlink; - uid_t i_uid; - gid_t i_gid; dev_t i_rdev; unsigned int i_blkbits; u64 i_version; @@ -754,13 +770,8 @@ struct inode { struct timespec i_ctime; 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; - const struct inode_operations *i_op; const struct file_operations *i_fop; /* former ->i_op->default_file_ops */ - struct super_block *i_sb; struct file_lock *i_flock; struct address_space *i_mapping; struct address_space i_data; @@ -781,14 +792,8 @@ struct inode { struct hlist_head i_fsnotify_marks; #endif - unsigned long i_state; - unsigned long dirtied_when; /* jiffies of first dirtying */ - - unsigned int i_flags; - #ifdef CONFIG_IMA - /* protected by i_lock */ - unsigned int i_readcount; /* struct files open RO */ + atomic_t i_readcount; /* struct files open RO */ #endif atomic_t i_writecount; #ifdef CONFIG_SECURITY @@ -967,6 +972,13 @@ struct file { #endif }; +struct file_handle { + __u32 handle_bytes; + int handle_type; + /* file identifier */ + unsigned char f_handle[0]; +}; + #define get_file(x) atomic_long_inc(&(x)->f_count) #define fput_atomic(x) atomic_long_add_unless(&(x)->f_count, -1, 1) #define file_count(x) atomic_long_read(&(x)->f_count) @@ -1056,10 +1068,8 @@ struct lock_manager_operations { int (*fl_compare_owner)(struct file_lock *, struct file_lock *); void (*fl_notify)(struct file_lock *); /* unblock callback */ int (*fl_grant)(struct file_lock *, struct file_lock *, int); - void (*fl_copy_lock)(struct file_lock *, struct file_lock *); void (*fl_release_private)(struct file_lock *); void (*fl_break)(struct file_lock *); - int (*fl_mylease)(struct file_lock *, struct file_lock *); int (*fl_change)(struct file_lock **, int); }; @@ -1372,13 +1382,13 @@ struct super_block { const struct xattr_handler **s_xattr; struct list_head s_inodes; /* all inodes */ - struct hlist_head s_anon; /* anonymous dentries for (nfs) exporting */ + struct hlist_bl_head s_anon; /* anonymous dentries for (nfs) exporting */ #ifdef CONFIG_SMP struct list_head __percpu *s_files; #else struct list_head s_files; #endif - /* s_dentry_lru and s_nr_dentry_unused are protected by dcache_lock */ + /* s_dentry_lru, s_nr_dentry_unused protected by dcache.c lru locks */ struct list_head s_dentry_lru; /* unused dentry lru */ int s_nr_dentry_unused; /* # of dentry on lru */ @@ -1392,6 +1402,7 @@ struct super_block { wait_queue_head_t s_wait_unfrozen; char s_id[32]; /* Informational name */ + u8 s_uuid[16]; /* UUID */ void *s_fs_info; /* Filesystem private info */ fmode_t s_mode; @@ -1417,6 +1428,7 @@ struct super_block { * generic_show_options() */ char __rcu *s_options; + const struct dentry_operations *s_d_op; /* default d_op for dentries */ }; extern struct timespec current_fs_time(struct super_block *sb); @@ -1437,8 +1449,13 @@ enum { #define put_fs_excl() atomic_dec(¤t->fs_excl) #define has_fs_excl() atomic_read(¤t->fs_excl) -#define is_owner_or_cap(inode) \ - ((current_fsuid() == (inode)->i_uid) || capable(CAP_FOWNER)) +/* + * until VFS tracks user namespaces for inodes, just make all files + * belong to init_user_ns + */ +extern struct user_namespace init_user_ns; +#define inode_userns(inode) (&init_user_ns) +extern bool inode_owner_or_capable(const struct inode *inode); /* not quite ready to be deprecated, but... */ extern void lock_super(struct super_block *); @@ -1474,8 +1491,8 @@ struct fiemap_extent_info { unsigned int fi_flags; /* Flags as passed from user */ unsigned int fi_extents_mapped; /* Number of mapped extents */ unsigned int fi_extents_max; /* Size of fiemap_extent array */ - struct fiemap_extent *fi_extents_start; /* Start of fiemap_extent - * array */ + struct fiemap_extent __user *fi_extents_start; /* Start of + fiemap_extent array */ }; int fiemap_fill_next_extent(struct fiemap_extent_info *info, u64 logical, u64 phys, u64 len, u32 flags); @@ -1543,11 +1560,22 @@ struct file_operations { 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); int (*setlease)(struct file *, long, struct file_lock **); + long (*fallocate)(struct file *file, int mode, loff_t offset, + loff_t len); }; +#define IPERM_FLAG_RCU 0x0001 + struct inode_operations { - int (*create) (struct inode *,struct dentry *,int, struct nameidata *); struct dentry * (*lookup) (struct inode *,struct dentry *, struct nameidata *); + void * (*follow_link) (struct dentry *, struct nameidata *); + int (*permission) (struct inode *, int, unsigned int); + int (*check_acl)(struct inode *, int, unsigned int); + + int (*readlink) (struct dentry *, char __user *,int); + void (*put_link) (struct dentry *, struct nameidata *, void *); + + int (*create) (struct inode *,struct dentry *,int, struct nameidata *); int (*link) (struct dentry *,struct inode *,struct dentry *); int (*unlink) (struct inode *,struct dentry *); int (*symlink) (struct inode *,struct dentry *,const char *); @@ -1556,12 +1584,7 @@ struct inode_operations { int (*mknod) (struct inode *,struct dentry *,int,dev_t); int (*rename) (struct inode *, struct dentry *, struct inode *, struct dentry *); - int (*readlink) (struct dentry *, char __user *,int); - void * (*follow_link) (struct dentry *, struct nameidata *); - void (*put_link) (struct dentry *, struct nameidata *, void *); void (*truncate) (struct inode *); - int (*permission) (struct inode *, int); - int (*check_acl)(struct inode *, int); 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); @@ -1569,11 +1592,9 @@ struct inode_operations { ssize_t (*listxattr) (struct dentry *, char *, size_t); int (*removexattr) (struct dentry *, const char *); void (*truncate_range)(struct inode *, loff_t, loff_t); - long (*fallocate)(struct inode *inode, int mode, loff_t offset, - loff_t len); int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start, u64 len); -}; +} ____cacheline_aligned; struct seq_file; @@ -1607,17 +1628,18 @@ struct super_operations { void (*umount_begin) (struct super_block *); int (*show_options)(struct seq_file *, struct vfsmount *); + int (*show_devname)(struct seq_file *, struct vfsmount *); + int (*show_path)(struct seq_file *, struct vfsmount *); int (*show_stats)(struct seq_file *, struct vfsmount *); #ifdef CONFIG_QUOTA ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t); ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t); #endif int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t); - int (*trim_fs) (struct super_block *, struct fstrim_range *); }; /* - * Inode state bits. Protected by inode_lock. + * Inode state bits. Protected by inode->i_lock * * Three bits determine the dirty state of the inode, I_DIRTY_SYNC, * I_DIRTY_DATASYNC and I_DIRTY_PAGES. @@ -1771,8 +1793,6 @@ int sync_inode_metadata(struct inode *inode, int wait); struct file_system_type { const char *name; int fs_flags; - int (*get_sb) (struct file_system_type *, int, - const char *, void *, struct vfsmount *); struct dentry *(*mount) (struct file_system_type *, int, const char *, void *); void (*kill_sb) (struct super_block *); @@ -1795,24 +1815,12 @@ extern struct dentry *mount_ns(struct file_system_type *fs_type, int flags, extern struct dentry *mount_bdev(struct file_system_type *fs_type, int flags, const char *dev_name, void *data, int (*fill_super)(struct super_block *, void *, int)); -extern int get_sb_bdev(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data, - int (*fill_super)(struct super_block *, void *, int), - struct vfsmount *mnt); extern struct dentry *mount_single(struct file_system_type *fs_type, int flags, void *data, int (*fill_super)(struct super_block *, void *, int)); -extern int get_sb_single(struct file_system_type *fs_type, - int flags, void *data, - int (*fill_super)(struct super_block *, void *, int), - struct vfsmount *mnt); extern struct dentry *mount_nodev(struct file_system_type *fs_type, int flags, void *data, int (*fill_super)(struct super_block *, void *, int)); -extern int get_sb_nodev(struct file_system_type *fs_type, - int flags, void *data, - int (*fill_super)(struct super_block *, void *, int), - struct vfsmount *mnt); void generic_shutdown_super(struct super_block *sb); void kill_block_super(struct super_block *sb); void kill_anon_super(struct super_block *sb); @@ -1825,8 +1833,9 @@ struct super_block *sget(struct file_system_type *type, int (*set)(struct super_block *,void *), void *data); extern struct dentry *mount_pseudo(struct file_system_type *, char *, - const struct super_operations *ops, unsigned long); -extern void simple_set_mnt(struct vfsmount *mnt, struct super_block *sb); + const struct super_operations *ops, + const struct dentry_operations *dops, + unsigned long); static inline void sb_mark_dirty(struct super_block *sb) { @@ -1859,6 +1868,8 @@ extern void drop_collected_mounts(struct vfsmount *); extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *, struct vfsmount *); extern int vfs_statfs(struct path *, struct kstatfs *); +extern int user_statfs(const char __user *, struct kstatfs *); +extern int fd_statfs(int, struct kstatfs *); extern int statfs_by_dentry(struct dentry *, struct kstatfs *); extern int freeze_super(struct super_block *super); extern int thaw_super(struct super_block *super); @@ -1975,6 +1986,8 @@ extern int do_fallocate(struct file *file, int mode, loff_t offset, extern long do_sys_open(int dfd, const char __user *filename, int flags, int mode); extern struct file *filp_open(const char *, int, int); +extern struct file *file_open_root(struct dentry *, struct vfsmount *, + const char *, int); extern struct file * dentry_open(struct dentry *, struct vfsmount *, int, const struct cred *); extern int filp_close(struct file *, fl_owner_t id); @@ -2007,7 +2020,6 @@ extern struct block_device *bdgrab(struct block_device *bdev); extern void bd_set_size(struct block_device *, loff_t size); extern void bd_forget(struct inode *inode); extern void bdput(struct block_device *); -extern struct block_device *open_by_devnum(dev_t, fmode_t); extern void invalidate_bdev(struct block_device *); extern int sync_blockdev(struct block_device *bdev); extern struct super_block *freeze_bdev(struct block_device *); @@ -2038,16 +2050,26 @@ extern const struct file_operations def_fifo_fops; extern int ioctl_by_bdev(struct block_device *, unsigned, unsigned long); extern int blkdev_ioctl(struct block_device *, fmode_t, unsigned, unsigned long); extern long compat_blkdev_ioctl(struct file *, unsigned, unsigned long); -extern int blkdev_get(struct block_device *, fmode_t); -extern int blkdev_put(struct block_device *, fmode_t); -extern int bd_claim(struct block_device *, void *); -extern void bd_release(struct block_device *); +extern int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder); +extern struct block_device *blkdev_get_by_path(const char *path, fmode_t mode, + void *holder); +extern struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, + void *holder); +extern int blkdev_put(struct block_device *bdev, fmode_t mode); #ifdef CONFIG_SYSFS -extern int bd_claim_by_disk(struct block_device *, void *, struct gendisk *); -extern void bd_release_from_disk(struct block_device *, struct gendisk *); +extern int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk); +extern void bd_unlink_disk_holder(struct block_device *bdev, + struct gendisk *disk); #else -#define bd_claim_by_disk(bdev, holder, disk) bd_claim(bdev, holder) -#define bd_release_from_disk(bdev, disk) bd_release(bdev) +static inline int bd_link_disk_holder(struct block_device *bdev, + struct gendisk *disk) +{ + return 0; +} +static inline void bd_unlink_disk_holder(struct block_device *bdev, + struct gendisk *disk) +{ +} #endif #endif @@ -2083,8 +2105,6 @@ static inline void unregister_chrdev(unsigned int major, const char *name) 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 *open_bdev_exclusive(const char *, fmode_t, void *); -extern void close_bdev_exclusive(struct block_device *, fmode_t); extern void blkdev_show(struct seq_file *,off_t); #else @@ -2118,7 +2138,7 @@ extern void check_disk_size_change(struct gendisk *disk, struct block_device *bdev); extern int revalidate_disk(struct gendisk *); extern int check_disk_change(struct block_device *); -extern int __invalidate_device(struct block_device *); +extern int __invalidate_device(struct block_device *, bool); extern int invalidate_partition(struct gendisk *, int); #endif unsigned long invalidate_mapping_pages(struct address_space *mapping, @@ -2159,8 +2179,8 @@ extern sector_t bmap(struct inode *, sector_t); #endif extern int notify_change(struct dentry *, struct iattr *); extern int inode_permission(struct inode *, int); -extern int generic_permission(struct inode *, int, - int (*check_acl)(struct inode *, int)); +extern int generic_permission(struct inode *, int, unsigned int, + int (*check_acl)(struct inode *, int, unsigned int)); static inline bool execute_ok(struct inode *inode) { @@ -2178,15 +2198,31 @@ static inline void allow_write_access(struct file *file) if (file) atomic_inc(&file->f_path.dentry->d_inode->i_writecount); } +#ifdef CONFIG_IMA +static inline void i_readcount_dec(struct inode *inode) +{ + BUG_ON(!atomic_read(&inode->i_readcount)); + atomic_dec(&inode->i_readcount); +} +static inline void i_readcount_inc(struct inode *inode) +{ + atomic_inc(&inode->i_readcount); +} +#else +static inline void i_readcount_dec(struct inode *inode) +{ + return; +} +static inline void i_readcount_inc(struct inode *inode) +{ + return; +} +#endif extern int do_pipe_flags(int *, int); extern struct file *create_read_pipe(struct file *f, int flags); extern struct file *create_write_pipe(int flags); extern void free_write_pipe(struct file *); -extern struct file *do_filp_open(int dfd, const char *pathname, - int open_flag, int mode, int acc_mode); -extern int may_open(struct path *, int, int); - extern int kernel_read(struct file *, loff_t, char *, unsigned long); extern struct file * open_exec(const char *); @@ -2204,6 +2240,7 @@ extern loff_t vfs_llseek(struct file *file, loff_t offset, int origin); extern int inode_init_always(struct super_block *, struct inode *); extern void inode_init_once(struct inode *); +extern void address_space_init_once(struct address_space *mapping); extern void ihold(struct inode * inode); extern void iput(struct inode *); extern struct inode * igrab(struct inode *); @@ -2231,6 +2268,7 @@ extern void iget_failed(struct inode *); extern void end_writeback(struct inode *); extern void __destroy_inode(struct inode *); extern struct inode *new_inode(struct super_block *); +extern void free_inode_nonrcu(struct inode *inode); extern int should_remove_suid(struct dentry *); extern int file_remove_suid(struct file *); @@ -2447,6 +2485,10 @@ static inline ino_t parent_ino(struct dentry *dentry) { ino_t res; + /* + * Don't strictly need d_lock here? If the parent ino could change + * then surely we'd have a deeper race in the caller? + */ spin_lock(&dentry->d_lock); res = dentry->d_parent->d_inode->i_ino; spin_unlock(&dentry->d_lock); @@ -2529,9 +2571,12 @@ int proc_nr_inodes(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); int __init get_filesystem_list(char *buf); +#define __FMODE_EXEC ((__force int) FMODE_EXEC) +#define __FMODE_NONOTIFY ((__force int) FMODE_NONOTIFY) + #define ACC_MODE(x) ("\004\002\006\006"[(x)&O_ACCMODE]) #define OPEN_FMODE(flag) ((__force fmode_t)(((flag + 1) & O_ACCMODE) | \ - (flag & FMODE_NONOTIFY))) + (flag & __FMODE_NONOTIFY))) #endif /* __KERNEL__ */ #endif /* _LINUX_FS_H */ |