1 files changed, 7 insertions, 25 deletions

diff --git a/hosts/vidhar/borg/copy.py b/hosts/vidhar/borg/copy.py
index 96426682..6adaa817 100755
--- a/hosts/vidhar/borg/copy.py
+++ b/hosts/vidhar/borg/copy.py
@@ -21,7 +21,6 @@ from xdg import xdg_runtime_dir
 import pathlib
 
 import unshare
-import pyprctl
 
 import signal
 from time import sleep
@@ -94,38 +93,21 @@ def copy_archive(src_repo_path, dst_repo_path, entry):
         child = os.fork()
         if child == 0:
             # print('unshare/chroot', file=stderr)
-            uid, gid = os.geteuid(), os.getegid()
-            unshare.unshare(unshare.CLONE_NEWNS | unshare.CLONE_NEWUSER)
-            ps_effective = set() # {pyprctl.Cap.SETUID, pyprctl.Cap.SETGID}
-            ps_ambient = {pyprctl.Cap.SYS_ADMIN}
-            pyprctl.cap_permitted.add(*(ps_effective | ps_ambient))
-            pyprctl.cap_effective.add(*(ps_effective | ps_ambient))
-            pyprctl.cap_inheritable.add(*ps_ambient)
-            pyprctl.cap_ambient.add(*ps_ambient)
-            with open('/proc/self/setgroups', 'w') as setgroups:
-                setgroups.write('deny')
-            with open('/proc/self/uid_map', 'w') as uid_map:
-                uid_map.write(f'0 {uid} 1')
-            with open('/proc/self/gid_map', 'w') as gid_map:
-                gid_map.write(f'0 {gid} 1')
+            unshare.unshare(unshare.CLONE_NEWNS)
             subprocess.run(['mount', '--make-rprivate', '/'], check=True)
             chroot = pathlib.Path(tmpdir) / 'chroot'
-            chroot.mkdir()
-            # upper = pathlib.Path(tmpdir) / 'upper'
-            # work = pathlib.Path(tmpdir) / 'work'
-            # for path in [chroot,upper,work]:
-            #     path.mkdir()
-            # print(f'euid={os.getuid()}', file=stderr)
-            # subprocess.run(['stat', '/', upper, work, chroot], check=True)
-            # subprocess.run(['mount', '-t', 'overlay', 'overlay', '-o', f'lowerdir=/,upperdir={upper},workdir={work}', chroot], check=True)
-            bindMounts = ['etc', 'nix', 'run', 'proc', 'dev', 'sys', pathlib.Path(os.path.expanduser('~')).relative_to('/')]
+            upper = pathlib.Path(tmpdir) / 'upper'
+            work = pathlib.Path(tmpdir) / 'work'
+            for path in [chroot,upper,work]:
+                path.mkdir()
+            subprocess.run(['mount', '-t', 'overlay', 'overlay', '-o', f'lowerdir=/,upperdir={upper},workdir={work}', chroot], check=True)
+            bindMounts = ['nix', 'run', 'proc', 'dev', 'sys', pathlib.Path(os.path.expanduser('~')).relative_to('/')]
             if not ":" in src_repo_path:
                 bindMounts.append(pathlib.Path(src_repo_path).relative_to('/'))
             if 'SSH_AUTH_SOCK' in os.environ:
                 bindMounts.append(pathlib.Path(os.environ['SSH_AUTH_SOCK']).parent.relative_to('/'))
             for bindMount in bindMounts:
                 (chroot / bindMount).mkdir(parents=True,exist_ok=True)
-                print(*['mount', '--bind', pathlib.Path('/') / bindMount, chroot / bindMount], file=stderr)
                 subprocess.run(['mount', '--bind', pathlib.Path('/') / bindMount, chroot / bindMount], check=True)
             os.chroot(chroot)
             os.chdir('/')