64 lines
1.8 KiB
Markdown
64 lines
1.8 KiB
Markdown
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Mounting gocryptfs on login using pam_mount
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===========================================
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This works on Fedora 24 with active SELinux. Feedback on other platforms
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is welcome.
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gocryptfs
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---------
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Copy the `gocryptfs` binary and `gocryptfs_pam_mount.bash` into
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`/usr/local/bin` .
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The bash wrapper is neccessary because of the different calling
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conventions between pam_mount and gocryptfs.
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Create a gocryptfs filesystem:
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```
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$ mkdir /home/testuser/cipher /home/testuser/plain
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$ gocryptfs -init /home/testuser/cipher
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```
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pam_mount config
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----------------
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Put the following into `/etc/security/pam_mount.conf.xml`, just before
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the closing `</pam_mount>` tag at the bottom:
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```
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<volume user="testuser" fstype="fuse" options="defaults"
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path="/usr/local/bin/gocryptfs_pam_mount.bash#/home/%(USER)/cipher"
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mountpoint="/home/%(USER)/plain" />
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```
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If you want to disable the display of the masterkey on mount, replace
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`options="defaults"` with `options="quiet"`.
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PAM config
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----------
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An example `/etc/pam.d/login` on Fedora 24 is shown below. pam_mount
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MUST be called AFTER `pam_selinux.so open` because that puts us in the
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right SELinux context.
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```
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#%PAM-1.0
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auth substack system-auth
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auth include postlogin
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account required pam_nologin.so
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account include system-auth
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password include system-auth
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session required pam_selinux.so close
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session required pam_loginuid.so
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session optional pam_console.so
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session required pam_selinux.so open
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session required pam_namespace.so
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# vvv insert pam_mount here
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session optional pam_mount.so
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# ^^^ insert pam_mount here
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session optional pam_keyinit.so force revoke
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session include system-auth
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session include postlogin
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-session optional pam_ck_connector.so
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```
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