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Allow containers to access shared public content #422

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ba55984
Allow containers to access shared public content
ipilcher Dec 5, 2025
3e8e230
Add new booleans to container_selinux(8) man page
ipilcher Dec 5, 2025
35d9a07
Fix typo in container_selinux(8) man page
ipilcher Dec 5, 2025
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24 changes: 24 additions & 0 deletions container.te
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Original file line number Diff line number Diff line change
Expand Up @@ -83,6 +83,22 @@ gen_tunable(container_use_cephfs, false)
## </desc>
gen_tunable(container_use_ecryptfs, false)

## <desc>
## <p>
## Allow containers to read shared public files
## (public_content_t & public_content_rw_t)
## </p>
## </desc>
gen_tunable(container_read_public_content, false)

## <desc>
## <p>
## Allow containers to read and write shared public
## files (public_content_rw_t)
## </p>
## </desc>
gen_tunable(container_manage_public_content, false)

attribute container_runtime_domain;
container_runtime_domain_template(container_runtime)
typealias container_runtime_t alias docker_t;
Expand Down Expand Up @@ -1452,6 +1468,14 @@ tunable_policy(`virt_sandbox_use_sys_admin',`
allow container_init_t self:cap_userns sys_admin;
')

tunable_policy(`container_read_public_content',`
miscfiles_read_public_files(container_domain)
')

tunable_policy(`container_manage_public_content',`
miscfiles_manage_public_files(container_domain)
')

allow container_init_domain self:netlink_audit_socket nlmsg_relay;

# container_engine_t is for running a container engine within a container
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18 changes: 17 additions & 1 deletion container_selinux.8
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Expand Up @@ -87,6 +87,22 @@ If you want to allow sandbox containers to use sys_admin system calls, for examp

.EE

.PP
If you want to allow containers to read shared public files (public_content_t and public_content_rw_t), set the container_read_public_content boolean. Disabled by default.

.EX
.B setsebool -P container_read_public_content 1

.EE

.PP
If you want to allow containers to read and write shared public files (public_content_rw_t), set the container_manage_public_content boolean. Disabled by default.

.EX
.B setsebool -P container_manage_public_content 1

.EE

.SH PORT TYPES
SELinux defines port types to represent TCP and UDP ports.
.PP
Expand Down Expand Up @@ -461,4 +477,4 @@ This manual page was auto-generated using
.B "sepolicy manpage".

.SH "SEE ALSO"
selinux(8), container(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8), container_auth_selinux(8), container_auth_selinux(8), container_device_selinux(8), container_device_selinux(8), container_device_plugin_selinux(8), container_device_plugin_selinux(8), container_device_plugin_init_selinux(8), container_device_plugin_init_selinux(8), container_engine_selinux(8), container_engine_selinux(8), container_init_selinux(8), container_init_selinux(8), container_kvm_selinux(8), container_kvm_selinux(8), container_logreader_selinux(8), container_logreader_selinux(8), container_logwriter_selinux(8), container_logwriter_selinux(8), container_runtime_selinux(8), container_runtime_selinux(8), container_user_selinux(8), container_user_selinux(8), container_userns_selinux(8), container_userns_selinux(8)
selinux(8), container(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8), container_auth_selinux(8), container_auth_selinux(8), container_device_selinux(8), container_device_selinux(8), container_device_plugin_selinux(8), container_device_plugin_selinux(8), container_device_plugin_init_selinux(8), container_device_plugin_init_selinux(8), container_engine_selinux(8), container_engine_selinux(8), container_init_selinux(8), container_init_selinux(8), container_kvm_selinux(8), container_kvm_selinux(8), container_logreader_selinux(8), container_logreader_selinux(8), container_logwriter_selinux(8), container_logwriter_selinux(8), container_runtime_selinux(8), container_runtime_selinux(8), container_user_selinux(8), container_user_selinux(8), container_userns_selinux(8), container_userns_selinux(8)