postgresql: fix fails to start on mounted data directories

This commit resolves a bug where the PostgreSQL service failed to start
during the boot process when its data directory ($pgdata) was on a
partition mounted via `/etc/fstab`.
Because the filesystem is already mounted, no hotplug event is ever
triggered, and the PostgreSQL service mistakenly waits for an event
that will never happen.
This fix adds a check to ensure the script does not skip starting the
service if the data directory is on a mount point.

Signed-off-by: Peiying Huang <eiying0517@gmail.com>

libs/postgresql/Makefile

@@ -6,7 +6,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=postgresql
 PKG_VERSION:=17.5
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
 PKG_LICENSE:=PostgreSQL
 PKG_CPE_ID:=cpe:/a:postgresql:postgresql

libs/postgresql/files/postgresql.init

@@ -32,8 +32,12 @@ start_service() {
 	user_exists postgres 5432 || user_add postgres 5432
 	group_exists postgres 5432 || group_add postgres 5432
 
+	local mountpoint="$(procd_get_mountpoints "${pgdata}")"
+
 	[ "$_BOOT" = "1" ] &&
-		[ "$(procd_get_mountpoints $pgdata)" ] && return 0
+		[ "$mountpoint" ] &&
+		! grep -q ".* $mountpoint " /proc/mounts &&
+		return 0
 
 	fix_perms
 	fix_hosts