fs/ufs/ufs.h

File Facts

System

Linux kernel

Corpus path

fs/ufs/ufs.h

Extension

.h

Size

4931 bytes

Lines

165

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct ufs_sb_private_info
• struct ufs_cg_private_info
• struct ufs_csum
• struct ufs_sb_info
• struct ufs_inode_info
• function ufs_dtog
• function ufs_dtogd

Annotated Snippet

extern const struct file_operations ufs_file_operations;
extern const struct address_space_operations ufs_aops;

/* ialloc.c */
extern void ufs_free_inode (struct inode *inode);
extern struct inode * ufs_new_inode (struct inode *, umode_t);

/* inode.c */
extern struct inode *ufs_iget(struct super_block *, unsigned long);
extern int ufs_write_inode (struct inode *, struct writeback_control *);
extern int ufs_sync_inode (struct inode *);
extern void ufs_evict_inode (struct inode *);
extern int ufs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
		       struct iattr *attr);

/* namei.c */
extern const struct file_operations ufs_dir_operations;

/* super.c */
extern __printf(3, 4)
void ufs_warning(struct super_block *, const char *, const char *, ...);
extern __printf(3, 4)
void ufs_error(struct super_block *, const char *, const char *, ...);
extern __printf(3, 4)
void ufs_panic(struct super_block *, const char *, const char *, ...);
void ufs_mark_sb_dirty(struct super_block *sb);

static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
{
	return sb->s_fs_info;
}

static inline struct ufs_inode_info *UFS_I(struct inode *inode)
{
	return container_of(inode, struct ufs_inode_info, vfs_inode);
}

/*
 * Give cylinder group number for a file system block.
 * Give cylinder group block number for a file system block.
 */
/* #define	ufs_dtog(d)	((d) / uspi->s_fpg) */
static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
{
	do_div(b, uspi->s_fpg);
	return b;
}
/* #define	ufs_dtogd(d)	((d) % uspi->s_fpg) */
static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
{
	return do_div(b, uspi->s_fpg);
}

#endif /* _UFS_UFS_H */

Annotation

• Detected declarations: `struct ufs_sb_private_info`, `struct ufs_cg_private_info`, `struct ufs_csum`, `struct ufs_sb_info`, `struct ufs_inode_info`, `function ufs_dtog`, `function ufs_dtogd`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: pattern implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.