def prepare_unshared_proccess():
for cmd in setup_user_map:
try:
with catch_and_die([CalledProcessError], debug='forked child'):
check_call(cmd)
except FileNotFoundError as exc:
utils.die(
'newuidmap/newgidmap not found in PATH, please install it (package typically called `uidmap` or `shadow-utils`)'
)
def get_subs(query_user, subfile):
'get subuids or subgids for a user'
try:
with open(subfile) as f:
read = f.readline()
user, start, count = read.split(':')
if user == query_user:
return int(start), int(count)
except FileNotFoundError:
pass
die('please configure a subgid/uid range for the user {} in /etc/subuid and /etc/subgid'
.format(repr(query_user)))
def die_with_errno(calling, extra=''):
myerrno = ctypes.get_errno()
errno_str = errno.errorcode.get(myerrno, myerrno)
die('calling {} returned {} {}'.format(calling, errno_str, extra))