[openwrt/openwrt] busybox: add check for capabilities file

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/aa6fe00a4804c782b2ad4afc894ea62109bc8d91

commit aa6fe00a4804c782b2ad4afc894ea62109bc8d91
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Fri Nov 27 23:45:54 2020 +0000

    busybox: add check for capabilities file
    
    Similar to the previous commit adding a check to the init script of
    umdns, do a similar change for sysntpd, just to be on the safe side.
    
    Inspired-by: 520403cd49 ("umdns: add check for seccomp list")
    
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 package/utils/busybox/Makefile      | 2 +-
 package/utils/busybox/files/sysntpd | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/package/utils/busybox/Makefile b/package/utils/busybox/Makefile
index 71bd888c71..38ef4d33bd 100644
--- a/package/utils/busybox/Makefile
+++ b/package/utils/busybox/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=busybox
 PKG_VERSION:=1.31.1
-PKG_RELEASE:=6
+PKG_RELEASE:=7
 PKG_FLAGS:=essential
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
diff --git a/package/utils/busybox/files/sysntpd b/package/utils/busybox/files/sysntpd
index db5fc6c034..19571a2306 100755
--- a/package/utils/busybox/files/sysntpd
+++ b/package/utils/busybox/files/sysntpd
@@ -55,7 +55,7 @@ start_ntpd_instance() {
 		procd_append_param command -p $peer
 	done
 	procd_set_param respawn
-	[ -x /sbin/ujail ] && {
+	[ -x /sbin/ujail -a -e /etc/capabilities/ntpd.json ] && {
 		procd_add_jail ntpd
 		procd_set_param capabilities /etc/capabilities/ntpd.json
 		procd_set_param user ntp