Bug 15712

Summary: setpriv uid/gid support
Product: Busybox Reporter: Istvan Beregszaszi <pestaa>
Component: Standard ComplianceAssignee: unassigned
Status: NEW ---    
Severity: normal CC: busybox-cvs
Priority: P5    
Version: 1.35.x   
Target Milestone: ---   
Hardware: All   
OS: Linux   
See Also: https://bugzilla.opensuse.org/show_bug.cgi?id=1212571
Host: Target:
Build:

Description Istvan Beregszaszi 2023-08-03 14:29:49 UTC 
util-linux variant supports the following options:

 --ruid <uid|user>           set real uid
 --euid <uid|user>           set effective uid
 --rgid <gid|user>           set real gid
 --egid <gid|group>          set effective gid
 --reuid <uid|user>          set real and effective uid
 --regid <gid|group>         set real and effective gid

https://github.com/util-linux/util-linux/blob/master/sys-utils/setpriv.1.adoc
Comment 1 bitstreamout 2023-08-04 06:23:49 UTC 
Not to forget

```
      --keep-groups
           Preserve supplementary groups. Only useful in conjunction with --rgid, --egid, or --regid.

       --init-groups
           Initialize supplementary groups using initgroups3. Only useful in conjunction with --ruid or --reuid.

```

this in combination is used e.g. in cron jobs as well as in rpm scriplets to create e.g. symbolic links or crate/clean files for system users/groups.