bitbake.conf: drop VOLATILE_TMP_DIR, use FILESYSTEM_PERMS_TABLES instead

* Drop VOLATILE_TMP_DIR, use FILESYSTEM_PERMS_TABLES instead. By default,
FILESYSTEM_PERMS_TABLES ?=  "files/fs-perms.txt \
                             files/fs-perms-volatile-log.txt \
                             files/fs-perms-volatile-tmp.txt"
it contains 'files/fs-perms-volatile-tmp.txt', which means volatile tmp
is enabled. User can disable volatile tmp by remove
'files/fs-perms-volatile-tmp.txt' from FILESYSTEM_PERMS_TABLES.
* If volatile tmp is disabled, both /tmp and /var/tmp are persistent

(From OE-Core rev: 8d1ae67b89c45f78162e070228086c7ef88c3264)

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/conf/bitbake.conf

@@ -86,10 +86,6 @@ USRBINPATH:class-nativesdk = "/usr/bin"
 # Root home directory
 ROOT_HOME ??= "/home/root"
 
-# if set to 'yes': /tmp links to /var/tmp which links to /var/volatile/tmp
-# otherwise:       /tmp is on persistent storage
-VOLATILE_TMP_DIR ?= "yes"
-
 BB_RENAMED_VARIABLES[PNBLACKLIST] = "SKIP_RECIPE"
 BB_RENAMED_VARIABLES[CVE_CHECK_PN_WHITELIST] = "CVE_CHECK_SKIP_RECIPE"
 BB_RENAMED_VARIABLES[CVE_CHECK_WHITELIST] = "CVE_CHECK_IGNORE"
@@ -381,7 +377,8 @@ FILESEXTRAPATHS ?= "__default:"
 #  datadir, sysconfdir, servicedir, sharedstatedir, localstatedir, infodir,
 #  mandir, docdir, bindir, sbindir, libexecdir, libdir and includedir
 FILESYSTEM_PERMS_TABLES ?=  "files/fs-perms.txt \
-                             files/fs-perms-volatile-log.txt"
+                             files/fs-perms-volatile-log.txt \
+                             files/fs-perms-volatile-tmp.txt"
 
 ##################################################################
 # General work and output directories for the build system.

meta/files/fs-perms-volatile-tmp.txt

@@ -0,0 +1,38 @@
+# This file contains a list of files and directories with known permissions.
+# It is used by the packaging class to ensure that the permissions, owners and
+# group of listed files and directories are in sync across the system.
+#
+# The format of this file 
+#
+#<path>	<mode>	<uid>	<gid>	<walk>	<fmode>	<fuid>	<fgid>
+#
+# or
+#
+#<path> link <target>
+#
+# <path>: directory path
+# <mode>: mode for directory
+# <uid>:  uid for directory
+# <gid>:  gid for directory
+# <walk>: recursively walk the directory?  true or false
+# <fmode>: if walking, new mode for files
+# <fuid>:  if walking, new uid for files
+# <fgid>:  if walking, new gid for files
+# <target>: turn the directory into a symlink point to target
+#
+# in mode, uid or gid, a "-" means don't change any existing values
+#
+# /usr/src		0755	root	root	false	-	-	-
+# /usr/share/man	0755	root	root	true	0644	root	root
+
+# Note: all standard config directories are automatically assigned "0755 root root false - - -"
+
+# Documentation should always be corrected
+
+# Items from base-files
+# Links
+${localstatedir}/tmp	link	volatile/tmp
+
+# Special permissions from base-files
+# Set 1777
+${localstatedir}/volatile/tmp	01777	root	root	false - - -

meta/files/fs-perms.txt

@@ -46,7 +46,6 @@ ${includedir}		0755	root	root	true	0644	root	root
 # Links
 ${localstatedir}/run	link	/run
 ${localstatedir}/lock	link	/run/lock
-${localstatedir}/tmp	link	volatile/tmp
 
 /home				0755	root	root	false - - -
 /srv				0755	root	root	false - - -
@@ -56,7 +55,6 @@ ${localstatedir}/local		0755	root	root	false - - -
 # Special permissions from base-files
 # Set 1777
 /tmp				01777	root	root	false - - -
-${localstatedir}/volatile/tmp	01777	root	root	false - - -
 
 # Set 0700
 ${ROOT_HOME}			0700	root	root	false - - -

meta/recipes-core/base-files/base-files_3.0.14.bb

@@ -31,7 +31,7 @@ UNPACKDIR = "${S}"
 INHIBIT_DEFAULT_DEPS = "1"
 
 docdir:append = "/${P}"
-dirs1777 = "/tmp ${localstatedir}/volatile/tmp"
+dirs1777 = "/tmp ${localstatedir}/${@bb.utils.contains('FILESYSTEM_PERMS_TABLES', 'files/fs-perms-volatile-tmp.txt', 'volatile/', '', d)}tmp"
 dirs2775 = ""
 dirs555 = "/sys /proc"
 dirs755 = "/boot /dev ${base_bindir} ${base_sbindir} ${base_libdir} \
@@ -55,7 +55,8 @@ dirs755-lsb = "/srv  \
                ${prefix}/lib/locale"
 dirs2775-lsb = "/var/mail"
 
-volatiles = "${@bb.utils.contains('FILESYSTEM_PERMS_TABLES', 'files/fs-perms-volatile-log.txt', 'log', '', d)} tmp"
+volatiles = "${@bb.utils.contains('FILESYSTEM_PERMS_TABLES', 'files/fs-perms-volatile-log.txt', 'log', '', d)} \
+             ${@bb.utils.contains('FILESYSTEM_PERMS_TABLES', 'files/fs-perms-volatile-tmp.txt', 'tmp', '', d)}"
 conffiles = "${sysconfdir}/debian_version ${sysconfdir}/host.conf \
              ${sysconfdir}/issue /${sysconfdir}/issue.net \
              ${sysconfdir}/nsswitch.conf ${sysconfdir}/profile \

meta/recipes-core/initscripts/initscripts_1.0.bb

@@ -110,7 +110,7 @@ do_install () {
 		sed -i -e '\@^d root root 0755 /var/volatile/log none$@ a\l root root 0755 /var/log /var/volatile/log' \
 			${D}${sysconfdir}/default/volatiles/00_core
 	fi
-	if [ "${VOLATILE_TMP_DIR}" != "yes" ]; then
+	if ! ${@bb.utils.contains('FILESYSTEM_PERMS_TABLES', 'files/fs-perms-volatile-tmp.txt', 'true', 'false', d)}; then
 		sed -i -e "/\<tmp\>/d" ${D}${sysconfdir}/default/volatiles/00_core
 	fi
 	install -m 0755    ${S}/dmesg.sh		${D}${sysconfdir}/init.d

meta/recipes-core/systemd/systemd_256.5.bb

@@ -327,7 +327,7 @@ do_install() {
 
 	# if the user requests /tmp be on persistent storage (i.e. not volatile)
 	# then don't use a tmpfs for /tmp
-	if [ "${VOLATILE_TMP_DIR}" != "yes" ]; then
+	if ! ${@bb.utils.contains('FILESYSTEM_PERMS_TABLES', 'files/fs-perms-volatile-tmp.txt', 'true', 'false', d)}; then
 		rm -f ${D}${rootlibexecdir}/systemd/system/tmp.mount
 		rm -f ${D}${rootlibexecdir}/systemd/system/local-fs.target.wants/tmp.mount
 	fi