#include <sys/mount.h>

sys/mount.h

includes: sys/appleapiopts.h, sys/cdefs.h, sys/attr.h, os/base.h, stdint.h, sys/ucred.h, sys/queue.h, Availability.h, sys/_types/_fsid_t.h, sys/_types/_graftdmg_un.h, sys/_types/_mount_t.h, sys/_types/_vnode_t.h

82 macros · 12 functions · 8 structs · 3 typedefs · 2 enums

structstatfs

size 2168, align 8

uint32_t	f_bsize	fundamental file system block size
int32_t	f_iosize	optimal transfer block size
uint64_t	f_blocks	total data blocks in file system
uint64_t	f_bfree	free blocks in fs
uint64_t	f_bavail	free blocks avail to non-superuser
uint64_t	f_files	total file nodes in file system
uint64_t	f_ffree	free file nodes in fs
fsid_t	f_fsid	file system id
uid_t	f_owner	user that mounted the filesystem
uint32_t	f_type	type of filesystem
uint32_t	f_flags	copy of mount exported flags
uint32_t	f_fssubtype	fs sub-type (flavor)
char[16]	f_fstypename	fs type name
char[1024]	f_mntonname	directory on which mounted
char[1024]	f_mntfromname	mounted filesystem
uint32_t	f_flags_ext	extended flags
uint32_t[7]	f_reserved	For future use

structvfsstatfs

size 2164, align 4

uint32_t	f_bsize	fundamental file system block size
size_t	f_iosize	optimal transfer block size
uint64_t	f_blocks	total data blocks in file system
uint64_t	f_bfree	free blocks in fs
uint64_t	f_bavail	free blocks avail to non-superuser
uint64_t	f_bused	free blocks avail to non-superuser
uint64_t	f_files	total file nodes in file system
uint64_t	f_ffree	free file nodes in fs
fsid_t	f_fsid	file system id
uid_t	f_owner	user that mounted the filesystem
uint64_t	f_flags	copy of mount exported flags
char[16]	f_fstypename	fs type name inclus
char[1024]	f_mntonname	directory on which mounted
char[1024]	f_mntfromname	mounted filesystem
uint32_t	f_fssubtype	fs sub-type (flavor)
void *[2]	f_reserved	For future use == 0

macroMNT_REMOVABLE

#define MNT_REMOVABLE 0x00000200

macroMNT_DOVOLFS

#define MNT_DOVOLFS 0x00008000

FS supports volfs (deprecated flag in Mac OS X 10.5)

macroMNT_DONTBROWSE

#define MNT_DONTBROWSE 0x00100000

file system is not appropriate path to user data

macroMNT_IGNORE_OWNERSHIP

#define MNT_IGNORE_OWNERSHIP 0x00200000

VFS will ignore ownership information on filesystem objects

macroMNT_NOFOLLOW

#define MNT_NOFOLLOW 0x08000000

don't follow symlink when resolving mount point

macroMNT_UNKNOWNPERMISSIONS

backwards compatibility only

#define MNT_UNKNOWNPERMISSIONS MNT_IGNORE_OWNERSHIP

macroMNT_VISFLAGMASK

XXX I think that this could now become (~(MNT_CMDFLAGS)) but the 'mount' program may need changing to handle this.

#define MNT_VISFLAGMASK (MNT_RDONLY	| MNT_SYNCHRONOUS | MNT_NOEXEC	|
	                MNT_NOSUID	| MNT_NODEV	| MNT_UNION	|
	                MNT_ASYNC	| MNT_EXPORTED	| MNT_QUARANTINE |
	                MNT_LOCAL	| MNT_QUOTA | MNT_REMOVABLE |
	                MNT_ROOTFS	| MNT_DOVOLFS	| MNT_DONTBROWSE |
	                MNT_IGNORE_OWNERSHIP | MNT_AUTOMOUNTED | MNT_JOURNALED |
	                MNT_NOUSERXATTR | MNT_DEFWRITE	| MNT_MULTILABEL |
	                MNT_NOFOLLOW | MNT_NOATIME | MNT_STRICTATIME |
	                MNT_SNAPSHOT | MNT_CPROTECT)

macroMNT_CMDFLAGS

#define MNT_CMDFLAGS (MNT_UPDATE|MNT_NOBLOCK|MNT_RELOAD|MNT_FORCE)

macroVFS_NUMMNTOPS

#define VFS_NUMMNTOPS 1

int: total num of vfs mount/unmount operations

macroVFS_CONF

#define VFS_CONF 2

struct: vfsconf for filesystem given as next argument

macroMNT_WAIT

Flags for various system call interfaces. waitfor flags to vfs_sync() and getfsstat()

#define MNT_WAIT 1

synchronized I/O file integrity completion

macroMNT_DWAIT

#define MNT_DWAIT 4

synchronized I/O data integrity completion

structvfsconf

Reserved fields preserve binary compatibility

size 40, align 4

uint32_t	vfc_reserved1	opaque
char[15]	vfc_name	filesystem type name
int	vfc_typenum	historic filesystem type number
int	vfc_refcount	number mounted of this type
int	vfc_flags	permanent flags
uint32_t	vfc_reserved2	opaque
uint32_t	vfc_reserved3	opaque

structvfsidctl

size 80, align 8

int	vc_vers	should be VFSIDCTL_VERS1 (below)
fsid_t	vc_fsid	fsid to operate on.
void *	vc_ptr	pointer to data structure.
size_t	vc_len	sizeof said structure.
u_int32_t[12]	vc_spare	spare (must be zero).

macroVFS_CTL_VERS1

vfsidctl API version.

#define VFS_CTL_VERS1 0x01

macroVFS_CTL_STATFS

Automatically select the correct VFS_CTL_*STATFS* flavor based on what "struct statfs" layout the client will use.

#define VFS_CTL_STATFS VFS_CTL_STATFS64

structvfsquery

size 128, align 4

u_int32_t	vq_flags
u_int32_t[31]	vq_spare

structvfs_server

size 772, align 4

int32_t	vs_minutes	minutes until server goes down.
u_int8_t[768]	vs_server_name	UTF8 server name to display (null terminated)

structnetfs_status

NetFS mount status - returned by VFS_CTL_NSTATUS

size 528, align 8

u_int32_t	ns_status	Current status of mount (vfsquery flags)
char[512]	ns_mountopts	Significant mount options
uint32_t	ns_waittime	Time waiting for reply (sec)
uint32_t	ns_threadcount	Number of threads blocked on network calls
uint64_t[0]	ns_threadids	Thread IDs of those blocked threads

macroVQ_ASSIST

#define VQ_ASSIST 0x0040

filesystem needs assistance from external program

macroVQ_VERYLOWDISK

#define VQ_VERYLOWDISK 0x0200

file system has *very* little disk space left

macroVQ_SYNCEVENT

#define VQ_SYNCEVENT 0x0400

a sync just happened (not set by kernel starting Mac OS X 10.9)

macroVQ_NEARLOWDISK

#define VQ_NEARLOWDISK 0x2000

Above lowdisk and below desired disk space

macroVQ_FREE_SPACE_CHANGE

#define VQ_FREE_SPACE_CHANGE 0x8000

free disk space has significantly changed

macroVQ_PURGEABLE_SPACE_CHANGE

#define VQ_PURGEABLE_SPACE_CHANGE 0x10000

purgeable disk space has significantly changed

macroVQ_IDLE_PURGE_NOTIFY

#define VQ_IDLE_PURGE_NOTIFY 0x20000

Above nearlowdisk and below desired disk space

macroNFS_MAX_FH_SIZE

Generic file handle

#define NFS_MAX_FH_SIZE NFSV4_MAX_FH_SIZE

macroNFSV4_MAX_FH_SIZE

#define NFSV4_MAX_FH_SIZE 128

macroNFSV3_MAX_FH_SIZE

#define NFSV3_MAX_FH_SIZE 64

macroNFSV2_MAX_FH_SIZE

#define NFSV2_MAX_FH_SIZE 32

structfhandle

size 132, align 4

unsigned int	fh_len	length of file handle
unsigned char[128]	fh_data	file handle value

typedeffhandle_t

typedef struct fhandle fhandle_t

macroCRYPTEX_AUTH_STRUCT_VERSION

Cryptex authentication Note: these 2 enums are used in conjunction, graftdmg_type is used for authentication while grafting cryptexes and cryptex_auth_type is currently used for authentication while mounting generic cryptexes. We need to make sure we do not use the reserved values in each for a new authentication type. bump up the version for any change that has kext dependency

#define CRYPTEX_AUTH_STRUCT_VERSION 2

enumgraftdmg_type_t

underlying type uint32_t

GRAFTDMG_CRYPTEX_BOOT	1
GRAFTDMG_CRYPTEX_PREBOOT	2
GRAFTDMG_CRYPTEX_DOWNLEVEL	3
GRAFTDMG_CRYPTEX_AUTH_ENV_GENERIC	4
GRAFTDMG_CRYPTEX_PDI_NONCE	6
GRAFTDMG_CRYPTEX_EFFECTIVE_AP	7
GRAFTDMG_CRYPTEX_MOBILE_ASSET	8
GRAFTDMG_CRYPTEX_MOBILE_ASSET_WITH_CODE	9
GRAFTDMG_CRYPTEX_MAX	9

typedefgraftdmg_type_t

typedef enum graftdmg_type_t graftdmg_type_t;

enumcryptex_auth_type_t

underlying type uint32_t

CRYPTEX1_AUTH_ENV_GENERIC	4
CRYPTEX1_AUTH_ENV_GENERIC_SUPPLEMENTAL	5
CRYPTEX_AUTH_PDI_NONCE	6
CRYPTEX_AUTH_MOBILE_ASSET	8
CRYPTEX_AUTH_MOBILE_ASSET_WITH_CODE	9
CRYPTEX_AUTH_MAX	9

typedefcryptex_auth_type_t

typedef enum cryptex_auth_type_t cryptex_auth_type_t;

functionfhopen

int fhopen(const struct fhandle *, int)

man page · January 9, 2007

fhopen(2) — open a file by file handle

functionfstatfs

__DARWIN_INODE64(fstatfs)
int fstatfs(int, struct statfs *)

man page · August 14, 2008

fstatfs(2) — get file system statistics

functiongetfh

int getfh(const char *, fhandle_t *)

man page · January 9, 2007

getfh(2) — get file handle

functiongetfsstat

__DARWIN_INODE64(getfsstat)
int getfsstat(struct statfs *, int, int)

man page · Oct 28, 2008

getfsstat(2) — get list of all mounted file systems

functiongetmntinfo

__DARWIN_INODE64(getmntinfo)
int getmntinfo(struct statfs **, int)

man page · April 12, 2017

getmntinfo(3) — get information about mounted file systems

functiongetmntinfo_r_np

__DARWIN_INODE64(getmntinfo_r_np) __OSX_AVAILABLE(10.13) __IOS_AVAILABLE(11.0) __TVOS_AVAILABLE(11.0) __WATCHOS_AVAILABLE(4.0)
int getmntinfo_r_np(struct statfs **, int)

man page · April 12, 2017

getmntinfo_r_np(3) — get information about mounted file systems

functionmount

int mount(const char *, const char *, int, void *)

man page · December 11, 1993

mount(2) — mount or dismount a filesystem

functionfmount

__OSX_AVAILABLE(10.13) __IOS_AVAILABLE(11.0) __TVOS_AVAILABLE(11.0) __WATCHOS_AVAILABLE(4.0)
int fmount(const char *, int, int, void *)

man page · December 11, 1993

fmount(2) — mount or dismount a filesystem

functionstatfs

__DARWIN_INODE64(statfs)
int statfs(const char *, struct statfs *)

man page · August 14, 2008

statfs(2) — get file system statistics

functionunmount

int unmount(const char *, int)

man page · December 11, 1993

unmount(2) — mount or dismount a filesystem

functionfunmount

__OSX_AVAILABLE(16.0) __IOS_AVAILABLE(19.0) __TVOS_AVAILABLE(19.0) __WATCHOS_AVAILABLE(12.0)
int funmount(int, int)

man page · December 11, 1993

funmount(2) — mount or dismount a filesystem

functiongetvfsbyname

int getvfsbyname(const char *, struct vfsconf *)

man page · May 4, 1995

getvfsbyname(3) — get information about a filesystem

sys/mount.h

macroMFSNAMELEN

macroMFSTYPENAMELEN

macroMNAMELEN

macroMNT_EXT_ROOT_DATA_VOL

macroMNT_EXT_FSKIT

structstatfs

structvfsstatfs

macroMNT_RDONLY

macroMNT_SYNCHRONOUS

macroMNT_NOEXEC

macroMNT_NOSUID

macroMNT_NODEV

macroMNT_UNION

macroMNT_ASYNC

macroMNT_CPROTECT

macroMNT_EXPORTED

macroMNT_REMOVABLE

macroMNT_QUARANTINE

macroMNT_LOCAL

macroMNT_QUOTA

macroMNT_ROOTFS

macroMNT_DOVOLFS

macroMNT_DONTBROWSE

macroMNT_IGNORE_OWNERSHIP

macroMNT_AUTOMOUNTED

macroMNT_JOURNALED

macroMNT_NOUSERXATTR

macroMNT_DEFWRITE

macroMNT_MULTILABEL

macroMNT_NOFOLLOW

macroMNT_NOATIME

macroMNT_SNAPSHOT

macroMNT_STRICTATIME

macroMNT_UNKNOWNPERMISSIONS

macroMNT_VISFLAGMASK

macroMNT_UPDATE

macroMNT_NOBLOCK

macroMNT_RELOAD

macroMNT_FORCE

macroMNT_CMDFLAGS

macroVFS_GENERIC

macroVFS_NUMMNTOPS

macroVFS_MAXTYPENUM

macroVFS_CONF

macroMNT_WAIT

macroMNT_NOWAIT

macroMNT_DWAIT

structvfsconf

structvfsidctl

macroVFS_CTL_VERS1

macroVFS_CTL_OSTATFS

macroVFS_CTL_UMOUNT

macroVFS_CTL_QUERY

macroVFS_CTL_NEWADDR

macroVFS_CTL_TIMEO

macroVFS_CTL_NOLOCKS

macroVFS_CTL_SADDR

macroVFS_CTL_DISC

macroVFS_CTL_SERVERINFO

macroVFS_CTL_NSTATUS

macroVFS_CTL_STATFS64

macroVFS_CTL_STATFS

structvfsquery

structvfs_server

structnetfs_status

macroVQ_NOTRESP

macroVQ_NEEDAUTH

macroVQ_LOWDISK

macroVQ_MOUNT

macroVQ_UNMOUNT

macroVQ_DEAD

macroVQ_ASSIST

macroVQ_NOTRESPLOCK

macroVQ_UPDATE

macroVQ_VERYLOWDISK

macroVQ_SYNCEVENT

macroVQ_SERVEREVENT

macroVQ_QUOTA

macroVQ_NEARLOWDISK