ACL stands for access control list. ACLs extend permissions on files beyond the traditional user-group-others triple.

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197 views

Change who is able to chmod

Is there a way to change who can chmod (change the permissions of) a particular file? It is only the owner of the file (without sudo-ing it), if my experimentation has been correct? But what I want ...
3
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1answer
2k views

How do I make all current and future files in a directory readable by a certain group/user?

I have a "Drop Box" directory for students to submit assignments. Its permissions are set to "drwx-wx---" where all of the students belong to the group. This lets them write to but not read from the ...
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27 views

Git with multiple users on other systems using setfacl?

I'm setting up a git environment where multiple developers will work with per project. We have 1 server running git, and 2 seperate servers, 1 live and 1 dev. on dev I created a group and added the ...
3
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1answer
41 views

ACL not working on directories

For some reason when I create new file from Windows I can change the permissions just fine but when I create a folder it won't let me change the permissions, I get this error: A device attached to ...
3
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240 views

Does Samba 4 actually respect Unix file acls?

After researching the subject on the internet I drew a conclusion that Samba should take into account Unix file acls. During my tests I found the opposite. Only Unix file mode bits are respected, and ...
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92 views

acl not overriding unix rights?

I have a folder with UNIX rights that forbid access to me : ls -l Sources-labo drwxrwxrw-+ 6 nobody applications 73728 févr. 25 13:25 Sources-labo groups users vault but the ACL are set so that ...
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725 views

“Operation not supported” for setfacl inside a python script [closed]

I've programmed a script using python which logs in as root on the host machine and executes some commands. Therefore it uses ssh. I want to setup acl. If I do following commands in the command line, ...
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2answers
1k views

Installing `setfacl` on Cent OS 6

My apologies if this is the wrong Stack Exchange for this sort of question — it seems like the most appropriate. Which yum package should I install to get the setfacl command on my linux virtual ...
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2answers
318 views

setting default permissions with setfacl

I am trying to set default permissions on my directory structure using acl. I would like to have following default permissions for directories and for files respectively: drwx--x--- -rw-r----- but ...
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2answers
45 views

how to restrict a user to access the file

I have created a file which resides inside my directory on a unix server. People have sudo privileges. How can I restrict them to read that file (even when they have sudo previleges) ?
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1answer
116 views

How can I use setfacl to give no access to “other” users?

The command setfacl -dm g::rwx mydir sets permissions for groups to read-write-execute. I'd like to run a similar command such that other users (i.e. not the owner) have no access whatsoever, but ...
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2answers
47 views

Specialized access control for directories in RedHat

I have a requirement where I want to change permissions for a directory so that the directory owner (user/group) would be able to create files inside the directory and modify them, but won't be able ...
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2answers
936 views

HPUX setacl leaves uid behind

I have a shell script that I execute after uninstalling a web application. The script is meant to clean up permissions that were needed during the execution of the application. find /opt/path -exec ...
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1answer
989 views

How does ACL calculate the effective permissions on a file?

I ran the following command to give the wheel group rwx permissions on new files and subdirectories created: [belmin@server1]$ ls -la total 24 drwxr-sr-x+ 2 guards guards 4096 Aug 27 15:30 . ...
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3answers
178 views

User with read access to /home

Pardon my ignorance but I can't seem to come up with a solution to this one. I'd like to create a user that has read access to every user's home catalog located in /home. Do I need acl's for this or ...
2
votes
1answer
561 views

OpenLDAP Centos 6

I am trying to set up some ACLs (starting off with a simple userpassword ACL) on a new OpenLdap deployment. I am trying to get to grips with the new conf.d configuration format - but am struggling. ...
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1answer
148 views

Using ACL Permissions without allowing other groups to access a directory?

0. Add user bkupusr to group extbk leeand00@hostname:/home/leeand00/$ sudo groupadd extbk leeand00@hostname:/home/leeand00/$ sudo usermod -G extbk bkupusr 1. Created directory structure: ...
2
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1answer
26 views

Can I use permissions or facls to limit the creation of files in a directory without limiting the creation of directories?

I have some directories with quite permissive permissions, which get cluttered up with files (scripts) created by lots of different users. I try to encourage people to create their own sub-directory ...
2
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1answer
426 views

How to add a read only group permission to a folder that already has a default group, and have it inherited for all newly created files & folders?

In Windows this is easy. I never fully figured out Linux permissions, I have a directory such as this: /Photos The current ACL permissions are as follows: owner: root - full access group: photos ...
2
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1answer
2k views

setfacl default --x on directories and r— on files for user

Having the following directory structure [sr@server directory]$ tree . ├── folder1 │   ├── fileA │   └── fileB └── folder2 └── fileC 2 directories, 3 files I want to set a default facl on ...
2
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1answer
47 views

ACL group permission still not allowing write permissions

There's a file called '/etc/file.conf' on my filesystem. $ getfacl /etc/file.conf getfacl: Removing leading '/' from absolute path names # file: etc/file.conf # owner: root # group: root user::rw- ...
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1answer
60 views

How can I use ACL to give one user control over a directory and all its contents

Two users, Foo and Bar. Foo wants Bar to work on a project in Foo's home dir. [foo]$ mkdir project [foo]$ # Set defaults [foo]$ setfacl -m d:u::rwx,d:g::rwx,d:o::--- project [foo]$ # Set defaults ...
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1answer
244 views

Who can change ACL permissions?

I'm using ACL to control access to individual roots of webs for different instances of Apache and different groups of admins. I've got a Unix group admins-web22 for admins of a particular website and ...
2
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1answer
757 views

Set group ownership on FTP upload via an ACL

I am interested in setting an ACL which will chown all the files I upload through FTP to the www-data group. However, after performing chown -R user:www-data /var/www/website.com/public_html/ ...
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2answers
6k views

ACL defaults not being obeyed on copy over NFS

I have an Arch Linux box that has a folder from an Ubuntu server mounted via NFS. I've set up an Access Control List on the folder on the server such that any new files should have their permissions ...
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1answer
2k views

How to use Extended ACL's on AIX?

Using AIX (6.1) FTPD, a user needs to log in and it should only reach 2 directories (read/write) in the system, ex.: /foo/sth1 and /foo2/sth2 Besised the users home directory it shouldn't reach ...
2
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1answer
509 views

Issues while untaring tarball with acl

I am getting an error “Unknown file type 'A', extracted as normal file” while un-taring a set of files which has acl permissions set. I had created the tar file in Solaris with tar -cpfv ...
2
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1answer
89 views

Get rights for specific user on file/dir

I'm searching for a command that essentially would do the following: check which rights a user has on a file/dir (including ACL) and return it. E.g. say you have the following directory: -rw-r--r-- ...
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49 views

Permissions (ACL) to allow creation of new files only - are extended attributes also needed?

I want to use a directory as a sort of drop-off point, similar to the Public folder in each Mac OS X home directory, that is: certain users (or everyone) should be able to create new files inside this ...
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0answers
68 views

What is the effect of ACLs/umask on the permissions of the executable file generated by gcc?

I have been wondering how gcc determines the resulting file permissions of the executable file being generated. To gain some insight, I considered a minimalistic program test.c #include ...
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77 views

Cross-NFS file move adds ACL

Moving a file from one NFS4 mount to another adds an ACL. The reason, if I understand the process correctly, is that mv queries the system.nfs4_acl extended attribute of the source file, and uses the ...
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184 views

How do I recursively apply default ACLs of a directory to its descendants?

If I have a directory with default ACL entries assigned to it, but some or all of its descendant files and sub-directories have access or default ACLs that do not agree with those defaults, how do I ...
2
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1answer
117 views

Using FACLs to restrict default group but allow others

So, I'm running RHEL 6.x with acls enabled, etc. and I've been fighting this ACL issue for a bit now and I can't seem to get it down. I'm trying to make it so that: /var/www/html/* are owned ...
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0answers
2k views

CentOS 6.5 sound permissions

I am trying to configure ALSA for a CentOS 6.5 minimal install, my problem is non-root users do not have permission to access the sound devices in /dev/snd because the files are missing access control ...
2
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0answers
253 views

New files getting wrong permissions from setacl

I'm trying to create a file from windows on a mapped samba share, but after creating the file, I'm unable to edit it. For some reason the mask is changing to rw- even though my default is set to rwx. ...
2
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1answer
109 views

Copying a file on a JFS filesystem, does not follow ACL guidelines

I have a JFS filesystem /dev/md2 on /mnt/hd2 type jfs (rw) to which I'm trying to copy some folders into target folder /mnt/hd2/videos/movies/. NOTE: I'm actually not using this target folder ...
2
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1answer
232 views

Chown and the risk of corrupting the backup disk

I am about to modify the file ownership recursively in a filesystem that uses ACLs. Because it is my backup disk, I thought I'd solicit comments on the script before I run it. #!/bin/bash # Replace ...
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2answers
625 views

UNIX ACL disadvantages [closed]

I have read a lot about how great UNIX ACLs are. For example, one good example can be viewed here. However, are there any disadvantages or configurations that cannot be expressed using ACL?
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3answers
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exim4 on debian: why does this ACL work when testing with -bh but not in actual use?

I've got local_acl_check_data to reject the typical spammer tactic of using the same address as From: and To:, but since some less-spammy sources, such as Yahoo Groups, do this, I'm using a whitelist ...
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3answers
65 views

Predefined group ids across Linux distros?

In order to successfully implement w/r access via ACL for external storage with ext4 fs I need to assign default group id for files on storage. LSB_5.0.0 say: This specification makes no attempt to ...
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1answer
769 views

Set sticky bit by default for new directories via ACL?

I want to set up a directory where all new files and directories have a certain access mask and also the directories have the sticky bit set (the t one, which restricts deletion of files inside those ...
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vote
1answer
334 views

AWS Outbound ACL Rules impact on incoming ssh connections

I am making a bastion ssh server on CentOS 7 in an AWS EC2 instance. When I use the following rules in its ACL, I am able to connect to the server just fine: Inbound Rules Allow traffic on port 22 ...
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1answer
3k views

What does the “flags” field in getfacl mean?

I'm trying to set permissions on a server between users using ACLs. When I'm checking their status on one of directories using getfacl dir10, it shows: root@svn:/srv/resources/somedir# getfacl dir10 ...
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2answers
75 views

How to Backup and Compare File Permissions?

Is there a way you can setup a list of receipts of folders and directories of their correct default permissions that can be used as a backup to compare the correct permissions and be used to fix ...
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1answer
449 views

can’t set ACLs on FreeBSD UFS

$ sysctl -a | grep acl kern.features.ufs_acl: 1 vfs.acl_nfs4_old_semantics: 0 $ mount /dev/ada0p2 on / (ufs, local, journaled soft-updates) devfs on /dev (devfs, local, multilabel) devfs on ...
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1answer
124 views

What is the difference between these two sets of command for configuring ACL permissions?

Hi I am wondering what is the difference between the two sets of commands below: 1) To allow Davis to access and modify all files and folders in the the home directory of John # setfacl -m ...
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2answers
3k views

How to give permissions to user (regarding an NFS share)

There are two machines: "A" and "B". OS is SLES 9.4. "A" is the NFS server, "B" is the NFS client. "A" has exported an FS to "B". "B" mounted the NFS share. On both machines I have root permission. ...
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1answer
179 views

Why can't ACLs block users from having access to their own home directory?

CentOS 6.x In the process of studying ACLs, I came across this blurb in my training documentation: However with ACLs, you can't deny access for a user to his home directory While I can't think ...
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1answer
12 views

rsync fails/hangs when copying from a Linux ext4 to a FreeBSD ZFS (via SSH)

When I try to copy directories from an ext4 on Linux to a ZFS on FreeBSD (via SSH), rsync immediately fails without copying anything: # rsync -haxHAX /mnt/source/ root@lethe:/mnt/dest/ -vvv opening ...
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1answer
45 views

How to give write / create right to not yet existing files w/o write access of the parent directory?

I don't know if this is even possible so I need to ask. I'd like to allow a single file to be created by a user (a flag-file) but only that file should be able to be created. As I have the parent ...