https://bugs.kde.org/show_bug.cgi?id=399270
Bug ID: 399270
Summary: File copying ignores setuid bit
Product: dolphin
Version: 17.12.2
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: dolphin-bugs-n...@kde.org
Reporter: i...@kobaltwit.be
CC: elvis.angelac...@kde.org
Target Milestone: ---
SUMMARY
Using dolphin to copy files into a directory which has the group setuid bit
set, will ignore this bit. That means the files copied will have the primary
group set of the user performing the copy instead of the group of the parent
directory.
STEPS TO REPRODUCE
1. Create a directory "test" with following permissions:
rwx rws --- myuser commongroup
That is the directory is accessible and modifyable by myuser and all members of
commongroup. The "s" indicates the group setuid bit is set and should enforce
that each file copied into this directory should get "commongroup" as group
ownership
The exact set of commands to set this up are
- mkdir test
- chmod u+rwx,g+rwxs,o= test
- chgrp commongroup test
Note commongroup must be an existing group which is not the primary group of
user myuser for this test.
2. Start dolphin and copy any file into this test directory
3. Check file ownership via the command line:
- ls -l test
OBSERVED RESULT
The group of the copied file is myuser's primary group
EXPECTED RESULT
The group of the copied file is "commongroup" as per the setuid bit behavior.
SOFTWARE VERSIONS
(available in About System)
KDE Plasma Version: 5.12.6
KDE Frameworks Version: 5.48.0
Qt Version: 5.9.6
ADDITIONAL INFORMATION
A copy on the command line using "cp" does the right thing. This erratic
behavior makes it unnecessarily hard to share files in a networked multi-user
environment.
In the past a similar bug was reported against gwenview: bug 149148. As that
bug is closed and I'm seeing this in dolphin, I chose to create a new bug.
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