Public bug reported: After upgrading to kernel 4.15.0-24-generic (on Ubuntu 18.04 LTS) NFSv4.2 mounts ignore the umask when creating files and directories. Files get permissions 666 and directories get 777. Therefore, a umask of 000 is seemingly being forced when creating files/directories in NFS mounts. Mounting with noacl does not resolve the issue.
How to replicate: 1. Mount an NFS share (defaults to NFSv4.2) 2. Ensure restrictive umask: umask 022 3. Create directory: mkdir test_dir 4. Create file: touch test_file 5. List: ls -l The result will be: drwxrwxrwx 2 user user 2 Jul 2 12:16 test_dir -rw-rw-rw- 1 user user 0 Jul 2 12:16 test_file while the expected result would be drwxr-xr-x 2 user user 2 Jul 2 12:16 test_dir -rw-r--r-- 1 user user 0 Jul 2 12:16 test_file Bug does not occur when mounting with any of: vers=3 vers=4.0 vers=4.1 I have a suspicion this is related to: https://tools.ietf.org/id/draft-ietf-nfsv4-umask-03.html But since the server does not have ACL's enabled, and mounting with noacl does not resolve the issue this is unexpected behavior. Both server and client are running kernel 4.15.0-24-generic on Ubuntu 18.04 LTS. NFS package versions are: nfs-kernel-server 1:1.3.4-2.1ubuntu5 nfs-common 1:1.3.4-2.1ubuntu5 ** Affects: nfs-utils (Ubuntu) Importance: Undecided Status: New ** Description changed: After upgrading to kernel 4.15.0-24-generic (on Ubuntu 18.04 LTS) NFSv4.2 mounts ignore the umask when creating files and directories. Files get permissions 666 and directories get 777. Therefore, a umask of 000 is seemingly being forced when creating files/directories in NFS mounts. Mounting with noacl does not resolve the issue. How to replicate: 1. Mount an NFS share (defaults to NFSv4.2) 2. Ensure restrictive umask: umask 022 3. Create directory: mkdir test_dir 4. Create file: mkdir test_file 5. List: ls -l The result will be: drwxrwxrwx 2 user user 2 Jul 2 12:16 test_dir -rw-rw-rw- 1 user user 0 Jul 2 12:16 test_file while the expected result would be drwxr-xr-x 2 user user 2 Jul 2 12:16 test_dir -rw-r--r-- 1 user user 0 Jul 2 12:16 test_file - Bug does not occur when mounting with: - - * vers=3 - * vers=4.0 - * vers=4.1 + Bug does not occur when mounting with any of: + vers=3 + vers=4.0 + vers=4.1 I have a suspicion this is related to: https://tools.ietf.org/id/draft-ietf-nfsv4-umask-03.html But since the server does not have ACL's enabled, and mounting with noacl does not resolve the issue this is unexpected behavior. Both server and client are running kernel 4.15.0-24-generic on Ubuntu 18.04 LTS. NFS package versions are: nfs-kernel-server 1:1.3.4-2.1ubuntu5 nfs-common 1:1.3.4-2.1ubuntu5 ** Description changed: After upgrading to kernel 4.15.0-24-generic (on Ubuntu 18.04 LTS) NFSv4.2 mounts ignore the umask when creating files and directories. Files get permissions 666 and directories get 777. Therefore, a umask of 000 is seemingly being forced when creating files/directories in NFS mounts. Mounting with noacl does not resolve the issue. How to replicate: 1. Mount an NFS share (defaults to NFSv4.2) 2. Ensure restrictive umask: umask 022 3. Create directory: mkdir test_dir - 4. Create file: mkdir test_file + 4. Create file: touch test_file 5. List: ls -l The result will be: drwxrwxrwx 2 user user 2 Jul 2 12:16 test_dir -rw-rw-rw- 1 user user 0 Jul 2 12:16 test_file while the expected result would be drwxr-xr-x 2 user user 2 Jul 2 12:16 test_dir -rw-r--r-- 1 user user 0 Jul 2 12:16 test_file Bug does not occur when mounting with any of: - vers=3 - vers=4.0 - vers=4.1 + vers=3 + vers=4.0 + vers=4.1 I have a suspicion this is related to: https://tools.ietf.org/id/draft-ietf-nfsv4-umask-03.html But since the server does not have ACL's enabled, and mounting with noacl does not resolve the issue this is unexpected behavior. Both server and client are running kernel 4.15.0-24-generic on Ubuntu 18.04 LTS. NFS package versions are: nfs-kernel-server 1:1.3.4-2.1ubuntu5 nfs-common 1:1.3.4-2.1ubuntu5 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1779736 Title: umask ignored on NFSv4.2 mounts To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1779736/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
