def inafs(path):
"""Return True if a path is in AFS."""
try:
whichcell(path)
except OSError, e:
if e.errno in (errno.EINVAL, errno.ENOENT):
return False
def inafs(path):
"""Return True if a path is in AFS."""
try:
whichcell(path)
except OSError, e:
if e.errno in (errno.EINVAL, errno.ENOENT):
return False
def whichcell(path):
"""Return the cell name or None if the path is not in AFS"""
try:
return _fs.whichcell(path)
except OSError as e:
if e.errno == errno.EINVAL:
return None
else:
raise
def mkmount(directory,volume,cell=None,rw=0):
"""Mount an AFS volume"""
cellularMount=0
if cell:
cellularMount=1
if len(volume) > 64:
raise Exception, 'volume name too long (length must be < 64 characters)'
""" Check for a cell name in volume spec. and complain if it doesn't match
what was specified with the cell option """
if ':' in volume:
tmpCell,tmpVolumeName=volume.split(':',1)
if not tmpCell == cell:
raise Exception, 'cell names do not match'
else:
volume=tmpVolume
cell=tmpCell
""" Make sure parent of directory is in afs """
parentPath=os.path.dirname(os.path.normpath(directory))
if not inafs(parentPath):
raise Exception, 'parent directory is not in afs'
""" If no cell has been defined thus far use the cell of the parent dir """
if not cell:
cell=whichcell(parentPath)
""" Handle explicit rw volume mounts """
mountTypeChar='#'
if rw == 1:
mountTypeChar='%' # if -rw specified
""" For volume specs containing a cell name """
cellularMountString=''
if cellularMount:
cellularMountString='%s:' % (cell)
""" Create the mount by ways of a symbolic link """
symlinkName='%s%s%s.' % (mountTypeChar,cellularMountString,volume)
os.symlink(symlinkName,directory)
