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commit: 3fdae66e37713cc8633303fdd3f09032b422b095 |
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Author: Nicolas Iooss <nicolas.iooss <AT> m4x <DOT> org> |
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AuthorDate: Mon Jan 11 18:14:55 2016 +0000 |
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Commit: Jason Zaman <perfinion <AT> gentoo <DOT> org> |
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CommitDate: Sat Jan 30 17:16:56 2016 +0000 |
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URL: https://gitweb.gentoo.org/proj/hardened-refpolicy.git/commit/?id=3fdae66e |
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|
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Allow systemd services to use PrivateNetwork feature |
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|
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systemd creates a new network namespace for services which are using |
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PrivateNetwork=yes. |
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|
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In the implementation, systemd uses a socketpair as a storage buffer for |
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the namespace reference file descriptor (c.f. |
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https://github.com/systemd/systemd/blob/v228/src/core/namespace.c#L660). |
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One end of this socketpair is locked (hence the need of "lock" access to |
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self:unix_dgram_socket for init_t) while systemd opens |
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/proc/self/ns/net, which lives in nsfs. |
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|
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While at it, add filesystem_type attribute to nsfs_t. |
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|
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policy/modules/kernel/filesystem.if | 17 +++++++++++++++++ |
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policy/modules/kernel/filesystem.te | 1 + |
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policy/modules/system/init.te | 3 +++ |
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3 files changed, 21 insertions(+) |
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|
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diff --git a/policy/modules/kernel/filesystem.if b/policy/modules/kernel/filesystem.if |
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index 0db8233..b9b30da 100644 |
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--- a/policy/modules/kernel/filesystem.if |
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+++ b/policy/modules/kernel/filesystem.if |
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@@ -3360,6 +3360,23 @@ interface(`fs_rw_nfsd_fs',` |
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|
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######################################## |
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## <summary> |
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+## Read nsfs inodes (e.g. /proc/pid/ns/uts) |
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+## </summary> |
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+## <param name="domain"> |
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+## <summary> |
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+## Domain allowed access. |
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+## </summary> |
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+## </param> |
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+# |
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+interface(`fs_read_nsfs_files',` |
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+ gen_require(` |
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+ type nsfs_t; |
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+ ') |
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+ |
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+ allow $1 nsfs_t:file read_file_perms; |
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+') |
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+######################################## |
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+## <summary> |
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## Getattr on pstore dirs. |
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## </summary> |
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## <param name="domain"> |
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|
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diff --git a/policy/modules/kernel/filesystem.te b/policy/modules/kernel/filesystem.te |
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index 89de79d..04ea6b6 100644 |
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--- a/policy/modules/kernel/filesystem.te |
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+++ b/policy/modules/kernel/filesystem.te |
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@@ -127,6 +127,7 @@ fs_type(nfsd_fs_t) |
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genfscon nfsd / gen_context(system_u:object_r:nfsd_fs_t,s0) |
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|
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type nsfs_t; |
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+fs_type(nsfs_t) |
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genfscon nsfs / gen_context(system_u:object_r:nsfs_t,s0) |
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|
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type oprofilefs_t; |
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|
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diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te |
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index a7fa7c0..4006e4f 100644 |
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--- a/policy/modules/system/init.te |
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+++ b/policy/modules/system/init.te |
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@@ -199,6 +199,7 @@ ifdef(`init_systemd',` |
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allow init_t self:netlink_kobject_uevent_socket create_socket_perms; |
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allow init_t self:netlink_route_socket create_netlink_socket_perms; |
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allow init_t self:netlink_selinux_socket create_socket_perms; |
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+ allow init_t self:unix_dgram_socket lock; |
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|
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manage_files_pattern(init_t, init_var_run_t, init_var_run_t) |
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manage_lnk_files_pattern(init_t, init_var_run_t, init_var_run_t) |
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@@ -260,6 +261,8 @@ ifdef(`init_systemd',` |
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# mount-setup |
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fs_unmount_autofs(init_t) |
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fs_getattr_pstore_dirs(init_t) |
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+ # for network namespaces |
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+ fs_read_nsfs_files(init_t) |
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|
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# systemd_socket_activated policy |
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mls_socket_write_all_levels(init_t) |
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