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     ˆÄÃƒÂwÂ¿Æ #    /* 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 {
	long f_type;
	long f_bsize;
	u64 f_blocks;
	u64 f_bfree;
	u64 f_bavail;
	u64 f_files;
	u64 f_ffree;
	__kernel_fsid_t f_fsid;
	long f_namelen;
	long f_frsize;
	long f_flags;
	long f_spare[4];
};

/*
 * 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	0x0001	/* mount read-only */
#define ST_NOSUID	0x0002	/* ignore suid and sgid bits */
#define ST_NODEV	0x0004	/* disallow access to device special files */
#define ST_NOEXEC	0x0008	/* disallow program execution */
#define ST_SYNCHRONOUS	0x0010	/* writes are synced at once */
#define ST_VALID	0x0020	/* f_flags support is implemented */
#define ST_MANDLOCK	0x0040	/* allow mandatory locks on an FS */
/* 0x0080 used for ST_WRITE in glibc */
/* 0x0100 used for ST_APPEND in glibc */
/* 0x0200 used for ST_IMMUTABLE in glibc */
#define ST_NOATIME	0x0400	/* do not update access times */
#define ST_NODIRATIME	0x0800	/* do not update directory access times */
#define ST_RELATIME	0x1000	/* update atime relative to mtime/ctime */
#define ST_NOSYMFOLLOW	0x2000	/* do not follow symlinks */

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

static inline __kernel_fsid_t u64_to_fsid(u64 v)
{
	return (__kernel_fsid_t){.val = {(u32)v, (u32)(v>>32)}};
}

/* Fold 16 bytes uuid to 64 bit fsid */
static inline __kernel_fsid_t uuid_to_fsid(__u8 *uuid)
{
	return u64_to_fsid(le64_to_cpup((void *)uuid) ^
		le64_to_cpup((void *)(uuid + sizeof(u64))));
}

#endif
     ˆÄÃƒy§Â¿Æ !    /* SPDX-License-Identifier: GPL-2.0 */
/*
 * This is <linux/capability.h>
 *
 * Andrew G. Morgan <morgan@kernel.org>
 * Alexander Kjeldaas <astor@guardian.no>
 * with help from Aleph1, Roland Buresund and Andrew Main.
 *
 * See here for the libcap library ("POSIX draft" compliance):
 *
 * ftp://www.kernel.org/pub/linux/libs/security/linux-privs/kernel-2.6/
 */
#ifndef _LINUX_CAPABILITY_H
#define _LINUX_CAPABILITY_H

#include <uapi/linux/capability.h>
#include <linux/uidgid.h>

#define _KERNEL_CAPABILITY_VERSION _LINUX_CAPABILITY_VERSION_3
#define _KERNEL_CAPABILITY_U32S    _LINUX_CAPABILITY_U32S_3

extern int file_caps_enabled;

typedef struct kernel_cap_struct {
	__u32 cap[_KERNEL_CAPABILITY_U32S];
} kernel_cap_t;

/* same as vfs_ns_cap_data but in cpu endian and always filled completely */
struct cpu_vfs_cap_data {
	__u32 magic_etc;
	kernel_cap_t permitted;
	kernel_cap_t inheritable;
	kuid_t rootid;
};

#define _USER_CAP_HEADER_SIZE  (sizeof(struct __user_cap_header_struct))
#define _KERNEL_CAP_T_SIZE     (sizeof(kernel_cap_t))


struct file;
struct inode;
struct dentry;
struct task_struct;
struct user_namespace;
struct mnt_idmap;

extern const kernel_cap_t __cap_empty_set;
extern const kernel_cap_t __cap_init_eff_set;

/*
 * Internal kernel functions only
 */

#define CAP_FOR_EACH_U32(__capi)  \
	for (__capi = 0; __capi < _KERNEL_CAPABILITY_U32S; ++__capi)

/*
 * CAP_FS_MASK and CAP_NFSD_MASKS:
 *
 * The fs mask is all the privileges that fsuid==0 historically meant.
 * At one time in the past, that included CAP_MKNOD and CAP_LINUX_IMMUTABLE.
 *
 * It has never meant setting security.* and trusted.* xattrs.
 *
 * We could also define fsmask as follows:
 *   1. CAP_FS_MASK is the privilege to bypass all fs-related DAC permissions
 *   2. The security.* and trusted.* xattrs are fs-related MAC permissions
 */

# define CAP_FS_MASK_B0     (CAP_TO_MASK(CAP_CHOWN)		\
			    | CAP_TO_MASK(CAP_MKNOD)		\
			    | CAP_TO_MASK(CAP_DAC_OVERRIDE)	\
			    | CAP_TO_MASK(CAP_DAC_READ_SEARCH)	\
			    | CAP_TO_MASK(CAP_FOWNER)		\
			    | CAP_TO_MASK(CAP_FSETID))

# define CAP_FS_MASK_B1     (CAP_TO_MASK(CAP_MAC_OVERRIDE))

#if _KERNEL_CA