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__all__ = ('mount', 'umount')
import ctypes
import os
from ctypes.util import find_library
from . import supported_systems
# mount flags synced from sys/mount.h, see the mount(2) man page for details.
MS_RDONLY = 1
MS_NOSUID = 2
MS_NODEV = 4
MS_NOEXEC = 8
MS_SYNCHRONOUS = 16
MS_REMOUNT = 32
MS_MANDLOCK = 64
MS_DIRSYNC = 128
MS_NOATIME = 1024
MS_NODIRATIME = 2048
MS_BIND = 4096
MS_MOVE = 8192
MS_REC = 16384
MS_SILENT = 32768
MS_POSIXACL = 1 << 16
MS_UNBINDABLE = 1 << 17
MS_PRIVATE = 1 << 18
MS_SLAVE = 1 << 19
MS_SHARED = 1 << 20
MS_RELATIME = 1 << 21
MS_KERNMOUNT = 1 << 22
MS_I_VERSION = 1 << 23
MS_STRICTATIME = 1 << 24
MS_ACTIVE = 1 << 30
MS_NOUSER = 1 << 31
# umount2 flags synced from sys/mount.h, see the umount2 man page for details.
MNT_FORCE = 1
MNT_DETACH = 2
MNT_EXPIRE = 4
UMOUNT_NOFOLLOW = 8
@supported_systems('linux')
def mount(source, target, fstype, flags, data=None):
"""Call mount(2); see the man page for details."""
libc = ctypes.CDLL(find_library('c'), use_errno=True)
source = source.encode() if isinstance(source, str) else source
target = target.encode() if isinstance(target, str) else target
fstype = fstype.encode() if isinstance(fstype, str) else fstype
if libc.mount(source, target, fstype, ctypes.c_ulong(flags), data) != 0:
e = ctypes.get_errno()
raise OSError(e, os.strerror(e))
@supported_systems('linux')
def umount(target, flags=None):
"""Call umount or umount2; see the umount(2) man page for details."""
libc = ctypes.CDLL(find_library('c'), use_errno=True)
target = target.encode() if isinstance(target, str) else target
args = []
func = libc.umount
if flags is not None:
args.append(ctypes.c_ulong(flags))
func = libc.umount2
if func(target, *args) != 0:
e = ctypes.get_errno()
raise OSError(e, os.strerror(e))
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