Root directory and system-related files change ownership to the current user when the user changes

[LeiCraft]

Expected Behavior

Ownership should not change

Actual Behavior

When switching to a non-root user, the ownership of almost all files and directories changes

Steps to Reproduce the Problem

1. Download and install Proot
2. Run proot -0 -rootfs "<path>" -b /dev -b /sys -b /proc
3. add another user with useradd -s /bin/bash <username>
4. Run sudo su <username> to change User
5. Run ls -l / to see the issue

Specifications

• Proot/Care version: v5.4.0
• Kernel version: 5.10.0-29-cloud-amd64
• Host distribution: Ubuntu 24.04
• Guest distribution: Debian 11

Command Output

root@hostname:/# ls -l /
total 60
lrwxrwxrwx   1 root root    7 May 17 05:24 bin -> usr/bin
drwxr-xr-x   2 root root 4096 Jan 28 21:20 boot
drwxr-xr-x   5 root root  360 May 17 14:14 dev
drwxr-xr-x  53 root root 4096 May 17 12:27 etc
drwxr-xr-x   4 root root 4096 May 17 12:27 home
-rwxr-xr-x   1 root root 3163 May 17 12:25 install.sh
lrwxrwxrwx   1 root root    7 May 17 05:24 lib -> usr/lib
lrwxrwxrwx   1 root root    9 May 17 05:24 lib32 -> usr/lib32
lrwxrwxrwx   1 root root    9 May 17 05:24 lib64 -> usr/lib64
lrwxrwxrwx   1 root root   10 May 17 05:24 libx32 -> usr/libx32
drwxr-xr-x   2 root root 4096 May 17 05:24 media
drwxr-xr-x   2 root root 4096 May 17 05:24 mnt
drwxr-xr-x   2 root root 4096 May 17 05:24 opt
dr-xr-xr-x 166 root root    0 May 17 14:14 proc
drwx------   2 root root 4096 May 17 15:28 root
drwxr-xr-x   3 root root 4096 May 17 14:14 run
lrwxrwxrwx   1 root root    8 May 17 05:24 sbin -> usr/sbin
drwxr-xr-x   2 root root 4096 May 17 05:24 srv
dr-xr-xr-x  13 root root    0 May 17 14:14 sys
drwxr-xr-x   2 root root 4096 May 17 12:26 tmp
drwxr-xr-x  14 root root 4096 May 17 05:24 usr
drwxr-xr-x  11 root root 4096 May 17 05:24 var
root@hostname:/# su leicraft
leicraft@hostname:/$ ls -l /
total 60
lrwxrwxrwx   1 leicraft leicraft    7 May 17 05:24 bin -> usr/bin
drwxr-xr-x   2 leicraft leicraft 4096 Jan 28 21:20 boot
drwxr-xr-x   5 root     root      360 May 17 14:14 dev
drwxr-xr-x  53 leicraft leicraft 4096 May 17 12:27 etc
drwxr-xr-x   4 leicraft leicraft 4096 May 17 12:27 home
-rwxr-xr-x   1 leicraft leicraft 3163 May 17 12:25 install.sh
lrwxrwxrwx   1 leicraft leicraft    7 May 17 05:24 lib -> usr/lib
lrwxrwxrwx   1 leicraft leicraft    9 May 17 05:24 lib32 -> usr/lib32
lrwxrwxrwx   1 leicraft leicraft    9 May 17 05:24 lib64 -> usr/lib64
lrwxrwxrwx   1 leicraft leicraft   10 May 17 05:24 libx32 -> usr/libx32
drwxr-xr-x   2 leicraft leicraft 4096 May 17 05:24 media
drwxr-xr-x   2 leicraft leicraft 4096 May 17 05:24 mnt
drwxr-xr-x   2 leicraft leicraft 4096 May 17 05:24 opt
dr-xr-xr-x 168 root     root        0 May 17 14:14 proc
drwx------   2 leicraft leicraft 4096 May 17 15:28 root
drwxr-xr-x   3 leicraft leicraft 4096 May 17 14:14 run
lrwxrwxrwx   1 leicraft leicraft    8 May 17 05:24 sbin -> usr/sbin
drwxr-xr-x   2 leicraft leicraft 4096 May 17 05:24 srv
dr-xr-xr-x  13 root     root        0 May 17 14:14 sys
drwxr-xr-x   2 leicraft leicraft 4096 May 17 12:26 tmp
drwxr-xr-x  14 leicraft leicraft 4096 May 17 05:24 usr
drwxr-xr-x  11 leicraft leicraft 4096 May 17 05:24 var