mirror of
https://github.com/borgbackup/borg.git
synced 2026-04-28 09:40:07 -04:00
e17fe2b295
this refactors umount code we already used for the testsuite into the platform module's namespace. also, it exposes that functionality via the cli api, so users can use it via "borg umount <mountpoint>", which is more consistent than using borg to mount and fusermount -u (or umount) to un-mount.
86 lines
2.5 KiB
Cython
86 lines
2.5 KiB
Cython
import os
|
|
from .helpers import user2uid, group2gid, safe_decode, safe_encode
|
|
|
|
API_VERSION = 3
|
|
|
|
cdef extern from "sys/acl.h":
|
|
ctypedef struct _acl_t:
|
|
pass
|
|
ctypedef _acl_t *acl_t
|
|
|
|
int acl_free(void *obj)
|
|
acl_t acl_get_link_np(const char *path, int type)
|
|
acl_t acl_set_link_np(const char *path, int type, acl_t acl)
|
|
acl_t acl_from_text(const char *buf)
|
|
char *acl_to_text(acl_t acl, ssize_t *len_p)
|
|
int ACL_TYPE_EXTENDED
|
|
|
|
|
|
def _remove_numeric_id_if_possible(acl):
|
|
"""Replace the user/group field with the local uid/gid if possible
|
|
"""
|
|
entries = []
|
|
for entry in safe_decode(acl).split('\n'):
|
|
if entry:
|
|
fields = entry.split(':')
|
|
if fields[0] == 'user':
|
|
if user2uid(fields[2]) is not None:
|
|
fields[1] = fields[3] = ''
|
|
elif fields[0] == 'group':
|
|
if group2gid(fields[2]) is not None:
|
|
fields[1] = fields[3] = ''
|
|
entries.append(':'.join(fields))
|
|
return safe_encode('\n'.join(entries))
|
|
|
|
|
|
def _remove_non_numeric_identifier(acl):
|
|
"""Remove user and group names from the acl
|
|
"""
|
|
entries = []
|
|
for entry in safe_decode(acl).split('\n'):
|
|
if entry:
|
|
fields = entry.split(':')
|
|
if fields[0] in ('user', 'group'):
|
|
fields[2] = ''
|
|
entries.append(':'.join(fields))
|
|
else:
|
|
entries.append(entry)
|
|
return safe_encode('\n'.join(entries))
|
|
|
|
|
|
def acl_get(path, item, st, numeric_owner=False):
|
|
cdef acl_t acl = NULL
|
|
cdef char *text = NULL
|
|
try:
|
|
acl = acl_get_link_np(<bytes>os.fsencode(path), ACL_TYPE_EXTENDED)
|
|
if acl == NULL:
|
|
return
|
|
text = acl_to_text(acl, NULL)
|
|
if text == NULL:
|
|
return
|
|
if numeric_owner:
|
|
item[b'acl_extended'] = _remove_non_numeric_identifier(text)
|
|
else:
|
|
item[b'acl_extended'] = text
|
|
finally:
|
|
acl_free(text)
|
|
acl_free(acl)
|
|
|
|
|
|
def acl_set(path, item, numeric_owner=False):
|
|
cdef acl_t acl = NULL
|
|
try:
|
|
try:
|
|
if numeric_owner:
|
|
acl = acl_from_text(item[b'acl_extended'])
|
|
else:
|
|
acl = acl_from_text(<bytes>_remove_numeric_id_if_possible(item[b'acl_extended']))
|
|
except KeyError:
|
|
return
|
|
if acl == NULL:
|
|
return
|
|
if acl_set_link_np(<bytes>os.fsencode(path), ACL_TYPE_EXTENDED, acl):
|
|
return
|
|
finally:
|
|
acl_free(acl)
|
|
|