linux/include/linux/statfs.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_STATFS_H
#define _LINUX_STATFS_H

#include <linux/types.h>
#include <asm/statfs.h>
#include <asm/byteorder.h>

struct kstatfs { … };

/*
 * Definitions for the flag in f_flag.
 *
 * Generally these flags are equivalent to the MS_ flags used in the mount
 * ABI.  The exception is ST_VALID which has the same value as MS_REMOUNT
 * which doesn't make any sense for statfs.
 */
#define ST_RDONLY …
#define ST_NOSUID …
#define ST_NODEV …
#define ST_NOEXEC …
#define ST_SYNCHRONOUS …
#define ST_VALID …
#define ST_MANDLOCK …
/* 0x0080 used for ST_WRITE in glibc */
/* 0x0100 used for ST_APPEND in glibc */
/* 0x0200 used for ST_IMMUTABLE in glibc */
#define ST_NOATIME …
#define ST_NODIRATIME …
#define ST_RELATIME …
#define ST_NOSYMFOLLOW …

struct dentry;
extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid);

static inline __kernel_fsid_t u64_to_fsid(u64 v)
{ … }

/* Fold 16 bytes uuid to 64 bit fsid */
static inline __kernel_fsid_t uuid_to_fsid(__u8 *uuid)
{ … }

#endif