Bug 207971
| Summary: | Wrong permissions with cp -a and reiserfs mounted with acl | ||
|---|---|---|---|
| Product: | File System | Reporter: | Marco (marco) |
| Component: | ReiserFS | Assignee: | ReiseFS developers team (reiserfs-devel) |
| Status: | NEW --- | ||
| Severity: | high | CC: | kernel, marco |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | >=4.13.0 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
I also tried with kernel: 5.14.10 5.15-rc4 but the problem persists. |
Copying files with the command cp -a source destination where destination is a filesystem with reiserfs format "3.6" with mount options noatime,user_xattr,acl failed to preserve permissions. I tested this behaviour with Ubuntu 16.04.6 LTS, Ubuntu 18.04.4 LTS and some Gentoo custom installations. Ubuntu kernel tested: 4.4.0-157-generic ok 4.8.0-58-generic ok 4.10.0-42-generic ok 4.12.14-041214-generic ok 4.13.0-45-generic broken permissions 4.13.1-041301-generic broken permissions 4.15.0-76-generic broken permissions 4.15.0-101-generic broken permissions 5.3.0-53-generic broken permissions 5.6.14-050614-generic broken permissions Steps to reproduce the problem (you need lot of files and i used kernel sources) and a device /dev/sdb formatted with reierfs: apt-get install --no-install-recommends linux-source-4.15.0 tar -jxf /usr/src/linux-source-4.15.0/linux-source-4.15.0.tar.bz2 -C /usr/src/ mkfs.reiserfs -f /dev/sdb mount -o noatime,user_xattr,acl /dev/sdb /mnt myk=/usr/src/linux-source-4.15.0 #Next command should return no files find $myk -type f -perm 600 myt=/mnt/test2 #Copy the files cp -a $myk $myt #Next command should return some files find $myt -type f -perm 600 #example of differences tempfile=`find $myt -type f -perm 600 | head -n 1` ls -la ${myk}${tempfile#$myt} $tempfile Example of broken permissions: -rw------- 1 root root 67421 May 11 12:07 /mnt/test2/fs/nfs/dir.c -rw-r--r-- 1 root root 67421 May 11 12:07 /usr/src/linux-source-4.15.0/fs/nfs/dir.c Expected permissions: -rw-r--r-- 1 root root 67421 May 11 12:07 /mnt/test2/fs/nfs/dir.c -rw-r--r-- 1 root root 67421 May 11 12:07 /usr/src/linux-source-4.15.0/fs/nfs/dir.c