fs/internal.h

File Facts

System

Linux kernel

Corpus path

fs/internal.h

Extension

.h

Size

11722 bytes

Lines

365

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 super_block
• struct file_system_type
• struct iomap
• struct iomap_ops
• struct linux_binprm
• struct path
• struct mount
• struct shrink_control
• struct fs_context
• struct pipe_inode_info
• struct iov_iter
• struct mnt_idmap
• struct ns_common
• struct open_flags
• struct xattr_name
• struct kernel_xattr_ctx
• struct stashed_operations
• function bdev_cache_init
• function file_put_write_access
• function put_file_access
• function mnt_is_readonly
• function mnt_is_readonly
• function do_set_acl
• function do_get_acl
• function path_mounted

Annotated Snippet

extern const struct file_operations pipefifo_fops;

/*
 * fs_pin.c
 */
extern void group_pin_kill(struct hlist_head *p);
extern void mnt_pin_kill(struct mount *m);

/*
 * fs/nsfs.c
 */
extern const struct dentry_operations ns_dentry_operations;
int open_namespace(struct ns_common *ns);
struct file *open_namespace_file(struct ns_common *ns);

/*
 * fs/stat.c:
 */

int do_statx(int dfd, struct filename *filename, unsigned int flags,
	     unsigned int mask, struct statx __user *buffer);
int do_statx_fd(int fd, unsigned int flags, unsigned int mask,
		struct statx __user *buffer);

/*
 * fs/splice.c:
 */
ssize_t splice_file_to_pipe(struct file *in,
			    struct pipe_inode_info *opipe,
			    loff_t *offset,
			    size_t len, unsigned int flags);

/*
 * fs/xattr.c:
 */
struct xattr_name {
	char name[XATTR_NAME_MAX + 1];
};

struct kernel_xattr_ctx {
	/* Value of attribute */
	union {
		const void __user *cvalue;
		void __user *value;
	};
	void *kvalue;
	size_t size;
	/* Attribute name */
	struct xattr_name *kname;
	unsigned int flags;
};

ssize_t file_getxattr(struct file *file, struct kernel_xattr_ctx *ctx);
ssize_t filename_getxattr(int dfd, struct filename *filename,
			  unsigned int lookup_flags, struct kernel_xattr_ctx *ctx);
int file_setxattr(struct file *file, struct kernel_xattr_ctx *ctx);
int filename_setxattr(int dfd, struct filename *filename,
		      unsigned int lookup_flags, struct kernel_xattr_ctx *ctx);
int setxattr_copy(const char __user *name, struct kernel_xattr_ctx *ctx);
int import_xattr_name(struct xattr_name *kname, const char __user *name);

int may_write_xattr(struct mnt_idmap *idmap, struct inode *inode);

#ifdef CONFIG_FS_POSIX_ACL
int do_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
	       const char *acl_name, const void *kvalue, size_t size);
ssize_t do_get_acl(struct mnt_idmap *idmap, struct dentry *dentry,
		   const char *acl_name, void *kvalue, size_t size);
#else
static inline int do_set_acl(struct mnt_idmap *idmap,
			     struct dentry *dentry, const char *acl_name,
			     const void *kvalue, size_t size)
{
	return -EOPNOTSUPP;
}
static inline ssize_t do_get_acl(struct mnt_idmap *idmap,
				 struct dentry *dentry, const char *acl_name,
				 void *kvalue, size_t size)
{
	return -EOPNOTSUPP;
}
#endif

ssize_t __kernel_write_iter(struct file *file, struct iov_iter *from, loff_t *pos);

/*
 * fs/attr.c
 */
struct mnt_idmap *alloc_mnt_idmap(struct user_namespace *mnt_userns);
struct mnt_idmap *mnt_idmap_get(struct mnt_idmap *idmap);

Annotation

• Detected declarations: `struct super_block`, `struct file_system_type`, `struct iomap`, `struct iomap_ops`, `struct linux_binprm`, `struct path`, `struct mount`, `struct shrink_control`, `struct fs_context`, `struct pipe_inode_info`.
• 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.