[openwrt/openwrt] procd: add missing dependency and fix empty mount triggers

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/5c13177c55d068dec3e58f8f37c1c78502f73d3d

commit 5c13177c55d068dec3e58f8f37c1c78502f73d3d
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Sun Aug 15 17:41:59 2021 +0100

    procd: add missing dependency and fix empty mount triggers
    
    procd.sh:
     Instead of triggering on every mount.add event, there should be no
     mount trigger at all in case none of the directories passed to
     procd_add_*_mount_trigger() are located on a mountpoint configured in
     /etc/config/fstab.
    
    uxc:
     add missing dependency on rpcd.
    
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 package/system/procd/Makefile       | 2 +-
 package/system/procd/files/procd.sh | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/package/system/procd/Makefile b/package/system/procd/Makefile
index e55d7755eb..98f1ed1775 100644
--- a/package/system/procd/Makefile
+++ b/package/system/procd/Makefile
@@ -90,7 +90,7 @@ endef
 define Package/uxc
   SECTION:=base
   CATEGORY:=Base system
-  DEPENDS:=+procd-ujail +libubus +libubox +libblobmsg-json +blockd
+  DEPENDS:=+procd-ujail +libubus +libubox +libblobmsg-json +blockd +rpcd
   TITLE:=OpenWrt container management
   MAINTAINER:=Daniel Golle <daniel at makrotopia.org>
 endef
diff --git a/package/system/procd/files/procd.sh b/package/system/procd/files/procd.sh
index 14314bec95..3549a5a914 100644
--- a/package/system/procd/files/procd.sh
+++ b/package/system/procd/files/procd.sh
@@ -394,11 +394,15 @@ procd_get_mountpoints() {
 }
 
 _procd_add_restart_mount_trigger() {
-	_procd_add_action_mount_trigger restart $(procd_get_mountpoints "$@")
+	local mountpoints="$(procd_get_mountpoints "$@")"
+	[ "${mountpoints//[[:space:]]}" ] &&
+		_procd_add_action_mount_trigger restart $mountpoints
 }
 
 _procd_add_reload_mount_trigger() {
-	_procd_add_action_mount_trigger reload $(procd_get_mountpoints "$@")
+	local mountpoints="$(procd_get_mountpoints "$@")"
+	[ "${mountpoints//[[:space:]]}" ] &&
+		_procd_add_action_mount_trigger reload $mountpoints
 }
 
 _procd_add_raw_trigger() {