mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-11 20:16:43 +07:00
4f99ed67cc
Propagate flags such as S_APPEND, S_IMMUTABLE, etc. from i_flags into ext2-specific i_flags. Hence, when someone sets these flags via a different interface than ioctl, they are stored correctly. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
178 lines
5.9 KiB
C
178 lines
5.9 KiB
C
#include <linux/fs.h>
|
|
#include <linux/ext2_fs.h>
|
|
|
|
/*
|
|
* ext2 mount options
|
|
*/
|
|
struct ext2_mount_options {
|
|
unsigned long s_mount_opt;
|
|
uid_t s_resuid;
|
|
gid_t s_resgid;
|
|
};
|
|
|
|
/*
|
|
* second extended file system inode data in memory
|
|
*/
|
|
struct ext2_inode_info {
|
|
__le32 i_data[15];
|
|
__u32 i_flags;
|
|
__u32 i_faddr;
|
|
__u8 i_frag_no;
|
|
__u8 i_frag_size;
|
|
__u16 i_state;
|
|
__u32 i_file_acl;
|
|
__u32 i_dir_acl;
|
|
__u32 i_dtime;
|
|
|
|
/*
|
|
* i_block_group is the number of the block group which contains
|
|
* this file's inode. Constant across the lifetime of the inode,
|
|
* it is ued for making block allocation decisions - we try to
|
|
* place a file's data blocks near its inode block, and new inodes
|
|
* near to their parent directory's inode.
|
|
*/
|
|
__u32 i_block_group;
|
|
|
|
/*
|
|
* i_next_alloc_block is the logical (file-relative) number of the
|
|
* most-recently-allocated block in this file. Yes, it is misnamed.
|
|
* We use this for detecting linearly ascending allocation requests.
|
|
*/
|
|
__u32 i_next_alloc_block;
|
|
|
|
/*
|
|
* i_next_alloc_goal is the *physical* companion to i_next_alloc_block.
|
|
* it the the physical block number of the block which was most-recently
|
|
* allocated to this file. This give us the goal (target) for the next
|
|
* allocation when we detect linearly ascending requests.
|
|
*/
|
|
__u32 i_next_alloc_goal;
|
|
__u32 i_prealloc_block;
|
|
__u32 i_prealloc_count;
|
|
__u32 i_dir_start_lookup;
|
|
#ifdef CONFIG_EXT2_FS_XATTR
|
|
/*
|
|
* Extended attributes can be read independently of the main file
|
|
* data. Taking i_mutex even when reading would cause contention
|
|
* between readers of EAs and writers of regular file data, so
|
|
* instead we synchronize on xattr_sem when reading or changing
|
|
* EAs.
|
|
*/
|
|
struct rw_semaphore xattr_sem;
|
|
#endif
|
|
#ifdef CONFIG_EXT2_FS_POSIX_ACL
|
|
struct posix_acl *i_acl;
|
|
struct posix_acl *i_default_acl;
|
|
#endif
|
|
rwlock_t i_meta_lock;
|
|
struct inode vfs_inode;
|
|
};
|
|
|
|
/*
|
|
* Inode dynamic state flags
|
|
*/
|
|
#define EXT2_STATE_NEW 0x00000001 /* inode is newly created */
|
|
|
|
|
|
/*
|
|
* Function prototypes
|
|
*/
|
|
|
|
/*
|
|
* Ok, these declarations are also in <linux/kernel.h> but none of the
|
|
* ext2 source programs needs to include it so they are duplicated here.
|
|
*/
|
|
|
|
static inline struct ext2_inode_info *EXT2_I(struct inode *inode)
|
|
{
|
|
return container_of(inode, struct ext2_inode_info, vfs_inode);
|
|
}
|
|
|
|
/* balloc.c */
|
|
extern int ext2_bg_has_super(struct super_block *sb, int group);
|
|
extern unsigned long ext2_bg_num_gdb(struct super_block *sb, int group);
|
|
extern int ext2_new_block (struct inode *, unsigned long,
|
|
__u32 *, __u32 *, int *);
|
|
extern void ext2_free_blocks (struct inode *, unsigned long,
|
|
unsigned long);
|
|
extern unsigned long ext2_count_free_blocks (struct super_block *);
|
|
extern unsigned long ext2_count_dirs (struct super_block *);
|
|
extern void ext2_check_blocks_bitmap (struct super_block *);
|
|
extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
|
|
unsigned int block_group,
|
|
struct buffer_head ** bh);
|
|
|
|
/* dir.c */
|
|
extern int ext2_add_link (struct dentry *, struct inode *);
|
|
extern ino_t ext2_inode_by_name(struct inode *, struct dentry *);
|
|
extern int ext2_make_empty(struct inode *, struct inode *);
|
|
extern struct ext2_dir_entry_2 * ext2_find_entry (struct inode *,struct dentry *, struct page **);
|
|
extern int ext2_delete_entry (struct ext2_dir_entry_2 *, struct page *);
|
|
extern int ext2_empty_dir (struct inode *);
|
|
extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **);
|
|
extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *);
|
|
|
|
/* fsync.c */
|
|
extern int ext2_sync_file (struct file *, struct dentry *, int);
|
|
|
|
/* ialloc.c */
|
|
extern struct inode * ext2_new_inode (struct inode *, int);
|
|
extern void ext2_free_inode (struct inode *);
|
|
extern unsigned long ext2_count_free_inodes (struct super_block *);
|
|
extern void ext2_check_inodes_bitmap (struct super_block *);
|
|
extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
|
|
|
|
/* inode.c */
|
|
extern void ext2_read_inode (struct inode *);
|
|
extern int ext2_write_inode (struct inode *, int);
|
|
extern void ext2_put_inode (struct inode *);
|
|
extern void ext2_delete_inode (struct inode *);
|
|
extern int ext2_sync_inode (struct inode *);
|
|
extern void ext2_discard_prealloc (struct inode *);
|
|
extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
|
|
extern void ext2_truncate (struct inode *);
|
|
extern int ext2_setattr (struct dentry *, struct iattr *);
|
|
extern void ext2_set_inode_flags(struct inode *inode);
|
|
extern void ext2_get_inode_flags(struct ext2_inode_info *);
|
|
|
|
/* ioctl.c */
|
|
extern int ext2_ioctl (struct inode *, struct file *, unsigned int,
|
|
unsigned long);
|
|
extern long ext2_compat_ioctl(struct file *, unsigned int, unsigned long);
|
|
|
|
/* namei.c */
|
|
struct dentry *ext2_get_parent(struct dentry *child);
|
|
|
|
/* super.c */
|
|
extern void ext2_error (struct super_block *, const char *, const char *, ...)
|
|
__attribute__ ((format (printf, 3, 4)));
|
|
extern void ext2_warning (struct super_block *, const char *, const char *, ...)
|
|
__attribute__ ((format (printf, 3, 4)));
|
|
extern void ext2_update_dynamic_rev (struct super_block *sb);
|
|
extern void ext2_write_super (struct super_block *);
|
|
|
|
/*
|
|
* Inodes and files operations
|
|
*/
|
|
|
|
/* dir.c */
|
|
extern const struct file_operations ext2_dir_operations;
|
|
|
|
/* file.c */
|
|
extern const struct inode_operations ext2_file_inode_operations;
|
|
extern const struct file_operations ext2_file_operations;
|
|
extern const struct file_operations ext2_xip_file_operations;
|
|
|
|
/* inode.c */
|
|
extern const struct address_space_operations ext2_aops;
|
|
extern const struct address_space_operations ext2_aops_xip;
|
|
extern const struct address_space_operations ext2_nobh_aops;
|
|
|
|
/* namei.c */
|
|
extern const struct inode_operations ext2_dir_inode_operations;
|
|
extern const struct inode_operations ext2_special_inode_operations;
|
|
|
|
/* symlink.c */
|
|
extern const struct inode_operations ext2_fast_symlink_inode_operations;
|
|
extern const struct inode_operations ext2_symlink_inode_operations;
|