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import os
import rcMountsDarwin as rcMounts
import resFs as Res
from rcUtilities import qcall, protected_mount, getmount
from rcGlobalEnv import rcEnv
from rcLoopDarwin import file_to_loop
import rcExceptions as ex
from stat import *
def try_umount(self):
cmd = ['diskutil', 'umount', self.mount_point]
(ret, out, err) = self.vcall(cmd, err_to_info=True)
if ret == 0:
return 0
cmd = ['diskutil', 'umount', 'force', self.mount_point]
(ret, out, err) = self.vcall(cmd, err_to_info=True)
if ret == 0:
return 0
cmd = ['umount', self.mount_point]
(ret, out, err) = self.vcall(cmd, err_to_info=True)
if ret == 0:
return 0
""" don't try to kill process using the source of a
protected bind mount
"""
if protected_mount(self.mount_point):
return 1
""" best effort kill of all processes that might block
the umount operation. The priority is given to mass
action reliability, ie don't contest oprator's will
"""
cmd = ['sync']
(ret, out, err) = self.vcall(cmd, err_to_info=True)
for i in range(4):
nb_killed = self.killfuser(self.mount_point)
self.log.info('umount %s'%self.mount_point)
cmd = ['umount', self.mount_point]
ret = qcall(cmd)
if ret == 0 or nb_killed == 0:
break
if ret != 0:
self.log.info("no more process using %s, yet umount fails. try forced umount."%self.mount_point)
cmd = ['umount', '-f', self.mount_point]
(ret, out, err) = self.vcall(cmd, err_to_info=True)
return ret
class Mount(Res.Mount):
""" define FreeBSD mount/umount doAction """
def __init__(self,
rid,
mount_point,
device,
fs_type,
mount_options,
snap_size=None,
**kwargs):
self.Mounts = None
self.loopdevice = None
self.isloop = False
Res.Mount.__init__(self,
rid,
mount_point=mount_point,
device=device,
fs_type=fs_type,
mount_options=mount_options,
snap_size=snap_size,
**kwargs)
self.fsck_h = {
'hfs': {
'bin': 'fsck',
'cmd': ['diskutil', 'repairVolume', self.device]
},
}
def killfuser(self, dir):
cmd = ['fuser', '-kmc', dir]
(ret, out, err) = self.vcall(cmd, err_to_info=True)
""" return the number of process we sent signal to
"""
l = out.split(':')
if len(l) < 2:
return 0
return len(l[1].split())
def is_up(self):
self.Mounts = rcMounts.Mounts()
ret = self.Mounts.has_mount(self.device, self.mount_point)
if ret:
return True
if self.fs_type not in self.netfs:
try:
st = os.stat(self.device)
mode = st[ST_MODE]
except:
self.log.debug("can not stat %s" % self.device)
return False
if S_ISREG(mode):
# might be a loopback mount
devs = file_to_loop(self.device)
for dev in devs:
ret = self.Mounts.has_mount(dev, self.mount_point)
if ret:
return True
return False
def realdev(self):
dev = None
try:
mode = os.stat(self.device)[ST_MODE]
except:
self.log.debug("can not stat %s" % self.device)
return None
if S_ISCHR(mode):
dev = self.device
else:
mnt = getmount(self.device)
if self.Mounts is None:
self.Mounts = rcMounts.Mounts()
m = self.Mounts.has_param("mnt", mnt)
if m is None:
self.log.debug("can't find dev %(dev)s mounted in %(mnt)s in mnttab"%dict(mnt=mnt, dev=self.device))
return None
dev = m.dev
return dev
def disklist(self):
dev = self.realdev()
if dev is None:
return set([])
try:
statinfo = os.stat(dev)
except:
self.log.error("can not stat %s" % dev)
raise ex.excError
return set([dev])
def can_check_writable(self):
return True
def start(self):
if self.Mounts is None:
self.Mounts = rcMounts.Mounts()
Res.Mount.start(self)
if self.fs_type in self.netfs or self.device == "none":
# TODO showmount -e
pass
else:
try:
mode = os.stat(self.device)[ST_MODE]
if S_ISREG(mode):
devs = file_to_loop(self.device)
if len(devs) > 0:
self.loopdevice = devs[0]
self.isloop = True
except:
self.log.debug("can not stat %s" % self.device)
return False
if self.is_up() is True:
self.log.info("%s is already mounted" % self.label)
return 0
if not os.path.exists(self.mount_point):
os.makedirs(self.mount_point, 0o755)
if self.isloop is True:
cmd = ['hdiutil', 'attach', '-mountpoint', self.mount_point , self.device]
(ret, out, err) = self.vcall(cmd)
else:
self.fsck()
try:
cmd = ['diskutil', 'mount', '-mount_point', self.mount_point , self.device]
(ret, out, err) = self.vcall(cmd)
except:
if self.fs_type != "":
fstype = ['-t', self.fs_type]
else:
fstype = []
if self.mount_options != "":
mntopt = ['-o', self.mount_options]
else:
mntopt = []
cmd = ['mount']+fstype+mntopt+[self.device, self.mount_point]
(ret, out, err) = self.vcall(cmd)
if ret != 0:
raise ex.excError
self.Mounts = None
self.can_rollback = True
def stop(self):
if self.Mounts is None:
self.Mounts = rcMounts.Mounts()
if self.is_up() is False:
self.log.info("%s is already umounted" % self.label)
return
for i in range(3):
ret = try_umount(self)
if ret == 0: break
if ret != 0:
self.log.error('failed to umount %s'%self.mount_point)
raise ex.excError
self.Mounts = None
if __name__ == "__main__":
for c in (Mount,) :
help(c)
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