From: Anthony PERARD <anthony.perard@citrix.com>
To: <selinux-refpolicy@vger.kernel.org>
Cc: Anthony PERARD <anthony.perard@citrix.com>
Subject: [PATCH v2] xen: Allow xenstored to map /proc/xen/xsd_kva
Date: Tue, 27 Oct 2020 17:22:28 +0000 [thread overview]
Message-ID: <20201027172228.528204-1-anthony.perard@citrix.com> (raw)
xenstored is using mmap() on /proc/xen/xsd_kva, and when the SELinux
boolean "domain_can_mmap_files" in CentOS is set to false the mmap()
call fails.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
v2: Declare an interface instead of using allow in xen.te directly.
---
policy/modules/kernel/filesystem.if | 18 ++++++++++++++++++
policy/modules/system/xen.te | 1 +
2 files changed, 19 insertions(+)
diff --git a/policy/modules/kernel/filesystem.if b/policy/modules/kernel/filesystem.if
index b52fc769236b..b85ae2f6e851 100644
--- a/policy/modules/kernel/filesystem.if
+++ b/policy/modules/kernel/filesystem.if
@@ -5310,6 +5310,24 @@ interface(`fs_manage_xenfs_files',`
manage_files_pattern($1, xenfs_t, xenfs_t)
')
+########################################
+## <summary>
+## Map files a XENFS filesystem.
+## </summary>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+#
+interface(`fs_mmap_xenfs_files',`
+ gen_require(`
+ type xenfs_t;
+ ')
+
+ allow $1 xenfs_t:file map;
+')
+
########################################
## <summary>
## Do not audit attempts to create,
diff --git a/policy/modules/system/xen.te b/policy/modules/system/xen.te
index 2c95d0ca3bbd..82328cbbbaa3 100644
--- a/policy/modules/system/xen.te
+++ b/policy/modules/system/xen.te
@@ -459,6 +459,7 @@ files_read_usr_files(xenstored_t)
fs_search_xenfs(xenstored_t)
fs_manage_xenfs_files(xenstored_t)
+fs_mmap_xenfs_files(xenstored_t)
term_use_generic_ptys(xenstored_t)
--
Anthony PERARD
next reply other threads:[~2020-10-27 17:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-27 17:22 Anthony PERARD [this message]
2020-11-05 11:55 ` [PATCH v2] xen: Allow xenstored to map /proc/xen/xsd_kva Chris PeBenito
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