The psplash program has a mechanism for showing updates graphically in the form of a progress bar. The program is told when and how much to fill the progress bar via text messages sent through a fifo. If the fifo doesn't exist when the psplash program starts, it tries to create it. If the fifo doesn't exist or can't be created, the psplash program will refuse to run.
In various circumstances when a system is booted for the very first time, the filesystem is mounted, initially, read-only. As a result the psplash program is not able to run. On systems where the root filesystem is not meant to be read-only, it will eventually be mounted read-write. Therefore the psplash program can run on shutdown, and all subsequent boots. Only the first boot is affected. If a fifo is created and included in the filesystem as part of the recipe, then filesystems that are meant to be read-only will have psplash work, as well as the cases where (on first boot) a read-write filesystem is initially mounted read-only. NOTE: this is only an issue with sysvinit, and non-qemu machines. systemd-based systems don't suffer from this first-boot issue, and neither do the qemu machines. NOTE 2: when psplash is done, it removes the fifo. Therefore the fifo used for communicating with psplash doesn't hang around unnecessarily in the filesystem. Signed-off-by: Trevor Woerner <twoer...@gmail.com> --- meta/recipes-core/psplash/psplash_git.bb | 8 +++++++- meta/recipes-core/sysvinit/sysvinit/rc | 1 - meta/recipes-core/sysvinit/sysvinit/rcS-default | 2 +- 3 files changed, 8 insertions(+), 3 deletions(-) diff --git a/meta/recipes-core/psplash/psplash_git.bb b/meta/recipes-core/psplash/psplash_git.bb index 44f0007daf..0a19a664c0 100644 --- a/meta/recipes-core/psplash/psplash_git.bb +++ b/meta/recipes-core/psplash/psplash_git.bb @@ -4,7 +4,7 @@ HOMEPAGE = "http://git.yoctoproject.org/cgit/cgit.cgi/psplash"; SECTION = "base" LICENSE = "GPLv2+" LIC_FILES_CHKSUM = "file://psplash.h;beginline=1;endline=8;md5=8f232c1e95929eacab37f00900580224" -DEPENDS = "gdk-pixbuf-native" +DEPENDS = "gdk-pixbuf-native coreutils-native" SRCREV = "0a902f7cd875ccf018456451be369f05fa55f962" PV = "0.1+git${SRCPV}" @@ -102,6 +102,10 @@ do_install_append() { if ${@bb.utils.contains('DISTRO_FEATURES', 'sysvinit', 'true', 'false', d)}; then install -d ${D}${sysconfdir}/init.d/ install -m 0755 ${WORKDIR}/psplash-init ${D}${sysconfdir}/init.d/psplash.sh + + # make fifo for psplash + install -d ${D}/mnt + mkfifo ${D}/mnt/psplash_fifo fi if ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'true', 'false', d)}; then @@ -122,3 +126,5 @@ SYSTEMD_SERVICE_${PN} += "${@bb.utils.contains('PACKAGECONFIG', 'systemd', 'pspl INITSCRIPT_NAME = "psplash.sh" INITSCRIPT_PARAMS = "start 0 S . stop 20 0 1 6 ." + +FILES_${PN} += "/mnt" diff --git a/meta/recipes-core/sysvinit/sysvinit/rc b/meta/recipes-core/sysvinit/sysvinit/rc index c9f6558115..8e76f987c1 100755 --- a/meta/recipes-core/sysvinit/sysvinit/rc +++ b/meta/recipes-core/sysvinit/sysvinit/rc @@ -175,6 +175,5 @@ startup() { if [ "x$runlevel" != "xS" ] && [ ! -x /etc/rc${runlevel}.d/S??xserver-nodm ]; then if type psplash-write >/dev/null 2>&1; then psplash-write "QUIT" || true - umount -l /mnt/.psplash fi fi diff --git a/meta/recipes-core/sysvinit/sysvinit/rcS-default b/meta/recipes-core/sysvinit/sysvinit/rcS-default index c576ff0678..76af22b359 100644 --- a/meta/recipes-core/sysvinit/sysvinit/rcS-default +++ b/meta/recipes-core/sysvinit/sysvinit/rcS-default @@ -31,4 +31,4 @@ ROOTFS_READ_ONLY=no # need to have specific behavior depending on init system INIT_SYSTEM=sysvinit # set the psplash fifo directory -PSPLASH_FIFO_DIR=/mnt/.psplash +PSPLASH_FIFO_DIR=/mnt -- 2.30.0.rc0
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