From: Changqing Li <changqing...@windriver.com>
Steps:
1. build out rootfs core-image-minimal-qemux86-64.tar.bz2
2. docker import core-image-minimal-qemux86-64.tar.bz2 poky:latest
3. docker run -it --rm poky:latest /bin/sh
4.
/var # ls -al
drwxr-xr-x 8 root root 4096 Mar 9 2018 .
drwxr-xr-x 1 root root 4096 Aug 5 06:59 ..
drwxr-xr-x 2 root root 4096 Mar 9 2018 backups
drwxr-xr-x 2 root root 4096 Mar 9 2018 cache
drwxr-xr-x 5 root root 4096 Mar 9 2018 lib
drwxr-xr-x 2 root root 4096 Mar 9 2018 local
lrwxrwxrwx 1 root root 11 Mar 9 2018 lock -> ../run/lock
lrwxrwxrwx 1 root root 12 Mar 9 2018 log -> volatile/log
lrwxrwxrwx 1 root root 6 Mar 9 2018 run -> ../run
drwxr-xr-x 3 root root 4096 Mar 9 2018 spool
lrwxrwxrwx 1 root root 12 Mar 9 2018 tmp -> volatile/tmp
drwxr-xr-x 2 root root 4096 Mar 9 2018 volatile
/var # cd log
/bin/sh: cd: can't cd to log: No such file or directory
/var # cd tmp
/bin/sh: cd: can't cd to tmp: No such file or directory
/var # cd volatile/
/var/volatile # ls -al
drwxr-xr-x 2 root root 4096 Mar 9 2018 .
drwxr-xr-x 8 root root 4096 Mar 9 2018 ..
In step3, because we don't launch container with init system,
volatile/tmp is not created during startup, and the dad link will cause
error. Supporting persistent /var/tmp can resolve this problem.
To support persistent /var/tmp, rename VOLATILE_LOG_DIR
to VOLATILE_DIR
Don't use VOLATILE_LOG_DIR/VOLATILE_TMP_DIR
to control it separately since it will make things complicated,
we need to make kinds of fs-perms*.txt for kinds of combination
of the two variables.
Signed-off-by: Changqing Li <changqing...@windriver.com>
---
meta/conf/bitbake.conf | 10 ++++++----
...erms-persistent-log.txt => fs-perms-persistent.txt} | 2 --
meta/recipes-core/base-files/base-files_3.0.14.bb | 7 ++++---
.../recipes-core/initscripts/initscripts-1.0/volatiles | 3 ---
meta/recipes-core/initscripts/initscripts_1.0.bb | 7 +++++--
meta/recipes-core/systemd/systemd_249.1.bb | 5 +++--
meta/recipes-core/udev/eudev_3.2.10.bb | 3 +++
7 files changed, 21 insertions(+), 16 deletions(-)
rename meta/files/{fs-perms-persistent-log.txt => fs-perms-persistent.txt}
(95%)
diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 821dae2ba6..e93c0b7893 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -86,9 +86,11 @@ USRBINPATH_class-nativesdk = "/usr/bin"
# Root home directory
ROOT_HOME ??= "/home/root"
-# If set to boolean true ('yes', 'y', 'true', 't', '1'), /var/log links to /var/volatile/log.
-# If set to boolean false ('no', 'n', 'false', 'f', '0'), /var/log is on
persistent storage.
-VOLATILE_LOG_DIR ?= "yes"
+# If set to boolean true ('yes', 'y', 'true', 't', '1'), /var/log links to
+# /var/volatile/log, /var/tmp links to /var/volatile/tmp
+# If set to boolean false ('no', 'n', 'false', 'f', '0'), /var/log and /var/tmp
+# is on persistent storage.
+VOLATILE_DIR ?= "yes"
##################################################################
# Architecture-dependent build variables.
@@ -349,7 +351,7 @@ FILESEXTRAPATHS ?= "__default:"
# datadir, sysconfdir, servicedir, sharedstatedir, localstatedir, infodir,
# mandir, docdir, bindir, sbindir, libexecdir, libdir, includedir and
# oldincludedir
-FILESYSTEM_PERMS_TABLES ?= "${@'files/fs-perms.txt' if
oe.types.boolean(d.getVar('VOLATILE_LOG_DIR')) else
'files/fs-perms-persistent-log.txt'}"
+FILESYSTEM_PERMS_TABLES ?= "${@'files/fs-perms.txt' if
oe.types.boolean(d.getVar('VOLATILE_DIR')) else 'files/fs-perms-persistent.txt'}"
##################################################################
# General work and output directories for the build system.
diff --git a/meta/files/fs-perms-persistent-log.txt
b/meta/files/fs-perms-persistent.txt
similarity index 95%
rename from meta/files/fs-perms-persistent-log.txt
rename to meta/files/fs-perms-persistent.txt
index 518c1be3c9..326c0ed092 100644
--- a/meta/files/fs-perms-persistent-log.txt
+++ b/meta/files/fs-perms-persistent.txt
@@ -47,7 +47,6 @@ ${oldincludedir} 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 - - -
@@ -57,7 +56,6 @@ ${localstatedir}/local 0755 root root
false - - -
# Special permissions from base-files
# Set 1777
/tmp 01777 root root false - - -
-${localstatedir}/volatile/tmp 01777 root root false - - -
# Set 0700
${ROOT_HOME} 0700 root root false - - -
diff --git a/meta/recipes-core/base-files/base-files_3.0.14.bb
b/meta/recipes-core/base-files/base-files_3.0.14.bb
index 94299431f6..0e06629bbd 100644
--- a/meta/recipes-core/base-files/base-files_3.0.14.bb
+++ b/meta/recipes-core/base-files/base-files_3.0.14.bb
@@ -29,7 +29,7 @@ S = "${WORKDIR}"
INHIBIT_DEFAULT_DEPS = "1"
docdir_append = "/${P}"
-dirs1777 = "/tmp ${localstatedir}/volatile/tmp"
+dirs1777 = "/tmp ${localstatedir}/${@'volatile/' if
oe.types.boolean('${VOLATILE_DIR}') else ''}tmp"
dirs2775 = ""
dirs555 = "/sys /proc"
dirs755 = "/boot /dev ${base_bindir} ${base_sbindir} ${base_libdir} \
@@ -42,7 +42,7 @@ dirs755 = "/boot /dev ${base_bindir} ${base_sbindir}
${base_libdir} \
${localstatedir}/backups ${localstatedir}/lib \
${localstatedir}/lib/misc ${localstatedir}/spool \
${localstatedir}/volatile \
- ${localstatedir}/${@'volatile/' if
oe.types.boolean('${VOLATILE_LOG_DIR}') else ''}log \
+ ${localstatedir}/${@'volatile/' if
oe.types.boolean('${VOLATILE_DIR}') else ''}log \
/home ${prefix}/src ${localstatedir}/local \
/media"
@@ -53,7 +53,8 @@ dirs755-lsb = "/srv \
${prefix}/lib/locale"
dirs2775-lsb = "/var/mail"
-volatiles = "${@'log' if oe.types.boolean('${VOLATILE_LOG_DIR}') else ''} tmp"
+volatiles = "${@'log' if oe.types.boolean('${VOLATILE_DIR}') else ''} \
+ ${@'tmp' if oe.types.boolean('${VOLATILE_DIR}') else ''}"
conffiles = "${sysconfdir}/debian_version ${sysconfdir}/host.conf \
${sysconfdir}/issue /${sysconfdir}/issue.net \
${sysconfdir}/nsswitch.conf ${sysconfdir}/profile \
diff --git a/meta/recipes-core/initscripts/initscripts-1.0/volatiles
b/meta/recipes-core/initscripts/initscripts-1.0/volatiles
index cd8a4be05f..eeeb8905da 100644
--- a/meta/recipes-core/initscripts/initscripts-1.0/volatiles
+++ b/meta/recipes-core/initscripts/initscripts-1.0/volatiles
@@ -24,11 +24,8 @@
# a link will be created at /var/test pointing to /tmp/testfile and due to
this
# link the file defined as /var/test will actually be created as
/tmp/testfile.
d root root 1777 /run/lock none
-d root root 0755 /var/volatile/log none
-d root root 1777 /var/volatile/tmp none
l root root 1777 /var/lock /run/lock
l root root 0755 /var/run /run
-l root root 1777 /var/tmp /var/volatile/tmp
l root root 1777 /tmp /var/tmp
d root root 0755 /var/lock/subsys none
f root root 0664 /var/log/wtmp none
diff --git a/meta/recipes-core/initscripts/initscripts_1.0.bb
b/meta/recipes-core/initscripts/initscripts_1.0.bb
index 65f9c0ae8d..cc079024f4 100644
--- a/meta/recipes-core/initscripts/initscripts_1.0.bb
+++ b/meta/recipes-core/initscripts/initscripts_1.0.bb
@@ -105,9 +105,12 @@ do_install () {
install -m 0755 ${WORKDIR}/read-only-rootfs-hook.sh
${D}${sysconfdir}/init.d
install -m 0755 ${WORKDIR}/save-rtc.sh ${D}${sysconfdir}/init.d
install -m 0644 ${WORKDIR}/volatiles
${D}${sysconfdir}/default/volatiles/00_core
- if [ ${@ oe.types.boolean('${VOLATILE_LOG_DIR}') } = True ]; then
- sed -i -e '\@^d root root 0755 /var/volatile/log none$@ a\l
root root 0755 /var/log /var/volatile/log' \
+ if [ ${@ oe.types.boolean('${VOLATILE_DIR}') } = True ]; then
+ sed -i -e '\@^# link the file@ a\d root root 0755
/var/volatile/log none\nd root root 1777 /var/volatile/tmp none\nl root root
0755 /var/tmp /var/volatile/tmp\nl root root 0755 /var/log /var/volatile/log' \
${D}${sysconfdir}/default/volatiles/00_core
+ else
+ sed -i -e
's;TMPROOT="${ROOT_DIR}/var/volatile/tmp";TMPROOT="${ROOT_DIR}/var/tmp";g' \
+ ${D}${sysconfdir}/init.d/populate-volatile.sh
fi
install -m 0755 ${WORKDIR}/dmesg.sh ${D}${sysconfdir}/init.d
install -m 0644 ${WORKDIR}/logrotate-dmesg.conf ${D}${sysconfdir}/
diff --git a/meta/recipes-core/systemd/systemd_249.1.bb
b/meta/recipes-core/systemd/systemd_249.1.bb
index 9bfb12249c..0914b7e0b2 100644
--- a/meta/recipes-core/systemd/systemd_249.1.bb
+++ b/meta/recipes-core/systemd/systemd_249.1.bb
@@ -251,8 +251,9 @@ do_install() {
install -m 0644 $rule ${D}${sysconfdir}/udev/rules.d/
done
- install -m 0644 ${WORKDIR}/00-create-volatile.conf ${D}${sysconfdir}/tmpfiles.d/
-
+ if [ ${@ oe.types.boolean('${VOLATILE_DIR}') } = True ]; then
+ install -m 0644 ${WORKDIR}/00-create-volatile.conf
${D}${sysconfdir}/tmpfiles.d/
+ fi
if
${@bb.utils.contains('DISTRO_FEATURES','sysvinit','true','false',d)}; then
install -d ${D}${sysconfdir}/init.d
install -m 0755 ${WORKDIR}/init
${D}${sysconfdir}/init.d/systemd-udevd
diff --git a/meta/recipes-core/udev/eudev_3.2.10.bb
b/meta/recipes-core/udev/eudev_3.2.10.bb
index a5d2115f80..3761fd748e 100644
--- a/meta/recipes-core/udev/eudev_3.2.10.bb
+++ b/meta/recipes-core/udev/eudev_3.2.10.bb
@@ -42,6 +42,9 @@ do_install_append() {
install -d ${D}${sysconfdir}/init.d
install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/udev
sed -i s%@UDEVD@%${base_sbindir}/udevd% ${D}${sysconfdir}/init.d/udev
+ if [ ${@ oe.types.boolean('${VOLATILE_DIR}') } = False ]; then
+ sed -i -e 's%mkdir -m 1777 -p /var/volatile/tmp%mkdir -m 1777
-p /var/tmp%g' ${D}${sysconfdir}/init.d/udev
+ fi
install -d ${D}${sysconfdir}/udev/rules.d
install -m 0644 ${WORKDIR}/local.rules
${D}${sysconfdir}/udev/rules.d/local.rules
