Udev watches all the fixed_disks and udevadm watches the runtime dir.
udevd[3010]: inotify_add_watch(6, /dev/sde, 10) failed: Permission denied
avc: denied { watch } for pid=4669 comm="udevadm" path="/run/udev" dev="tmpfs" ino=19464 scontext=system_u:system_r:udevadm_t:s0 tcontext=system_u:object_r:udev_runtime_t:s0 tclass=dir permissive=0
avc: denied { watch } for pid=3022 comm="udevd" path="/dev/loop3" dev="devtmpfs" ino=10247 scontext=system_u:system_r:udev_t:s0-s0:c0.c1023 tcontext=system_u:object_r:fixed_disk_device_t:s0 tclass=blk_file permissive=0
Signed-off-by: Jason Zaman <jason@xxxxxxxxxxxxx>
---
policy/modules/kernel/storage.if | 20 ++++++++++++++++++++
policy/modules/system/udev.te | 3 +++
2 files changed, 23 insertions(+)
diff --git a/policy/modules/kernel/storage.if b/policy/modules/kernel/storage.if
index c14bb13b..f9dcbaf5 100644
--- a/policy/modules/kernel/storage.if
+++ b/policy/modules/kernel/storage.if
@@ -364,6 +364,26 @@ interface(`storage_swapon_fixed_disk',`
allow $1 fixed_disk_device_t:blk_file getattr;
')
+########################################
+## <summary>
+## Watch fixed disk device nodes.
+## </summary>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+#
+interface(`storage_watch_fixed_disk',`
+ gen_require(`
+ type fixed_disk_device_t;
+ ')
+
+ dev_list_all_dev_nodes($1)
+ allow $1 fixed_disk_device_t:blk_file watch;
+ allow $1 fixed_disk_device_t:chr_file watch;
+')
+
########################################
## <summary>
## Allow the caller to get the attributes
diff --git a/policy/modules/system/udev.te b/policy/modules/system/udev.te
index 0ccbcb51..e0e27a9d 100644
--- a/policy/modules/system/udev.te
+++ b/policy/modules/system/udev.te
@@ -154,6 +154,8 @@ selinux_compute_create_context(udev_t)
selinux_compute_relabel_context(udev_t)
selinux_compute_user_contexts(udev_t)
+storage_watch_fixed_disk(udev_t)
+
auth_read_pam_console_data(udev_t)
auth_domtrans_pam_console(udev_t)
auth_use_nsswitch(udev_t)
@@ -401,6 +403,7 @@ delete_files_pattern(udevadm_t, udev_runtime_t, udev_runtime_t)
delete_lnk_files_pattern(udevadm_t, udev_runtime_t, udev_runtime_t)
list_dirs_pattern(udevadm_t, udev_runtime_t, udev_runtime_t)
read_files_pattern(udevadm_t, udev_runtime_t, udev_runtime_t)
+allow udevadm_t udev_runtime_t:dir watch;
list_dirs_pattern(udevadm_t, udev_tbl_t, udev_tbl_t)
read_files_pattern(udevadm_t, udev_tbl_t, udev_tbl_t)
--
2.24.1
