fs/smb/server/mgmt/share_config.h

File Facts

System

Linux kernel

Corpus path

fs/smb/server/mgmt/share_config.h

Extension

.h

Size

1926 bytes

Lines

78

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: implementation source

Status

source 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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/workqueue.h
• linux/hashtable.h
• linux/path.h
• linux/unicode.h

Detected Declarations

• struct ksmbd_work
• struct ksmbd_share_config
• function share_config_create_mode
• function share_config_directory_mode
• function test_share_config_flag
• function ksmbd_share_config_put

Annotated Snippet

struct ksmbd_share_config {
	char			*name;
	char			*path;

	unsigned int		path_sz;
	unsigned int		flags;
	struct list_head	veto_list;

	struct path		vfs_path;

	atomic_t		refcount;
	struct hlist_node	hlist;
	unsigned short		create_mask;
	unsigned short		directory_mask;
	unsigned short		force_create_mode;
	unsigned short		force_directory_mode;
	unsigned short		force_uid;
	unsigned short		force_gid;
};

#define KSMBD_SHARE_INVALID_UID	((__u16)-1)
#define KSMBD_SHARE_INVALID_GID	((__u16)-1)

static inline umode_t
share_config_create_mode(struct ksmbd_share_config *share,
			 umode_t posix_mode)
{
	umode_t mode = (posix_mode ?: (umode_t)-1) & share->create_mask;

	return mode | share->force_create_mode;
}

static inline umode_t
share_config_directory_mode(struct ksmbd_share_config *share,
			    umode_t posix_mode)
{
	umode_t mode = (posix_mode ?: (umode_t)-1) & share->directory_mask;

	return mode | share->force_directory_mode;
}

static inline int test_share_config_flag(struct ksmbd_share_config *share,
					 int flag)
{
	return share->flags & flag;
}

void ksmbd_share_config_del(struct ksmbd_share_config *share);
void __ksmbd_share_config_put(struct ksmbd_share_config *share);

static inline void ksmbd_share_config_put(struct ksmbd_share_config *share)
{
	if (!atomic_dec_and_test(&share->refcount))
		return;
	__ksmbd_share_config_put(share);
}

struct ksmbd_share_config *ksmbd_share_config_get(struct ksmbd_work *work,
						  const char *name);
bool ksmbd_share_veto_filename(struct ksmbd_share_config *share,
			       const char *filename);
#endif /* __SHARE_CONFIG_MANAGEMENT_H__ */

Annotation

• Immediate include surface: `linux/workqueue.h`, `linux/hashtable.h`, `linux/path.h`, `linux/unicode.h`.
• Detected declarations: `struct ksmbd_work`, `struct ksmbd_share_config`, `function share_config_create_mode`, `function share_config_directory_mode`, `function test_share_config_flag`, `function ksmbd_share_config_put`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.