diff options
author | Vyacheslav Yurkov <v.yurkov@precitec.de> | 2022-09-07 21:51:38 +0200 |
---|---|---|
committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2022-09-09 12:24:43 +0100 |
commit | c3ec554ba5dbe5abcba35724f039baba8a4c27eb (patch) | |
tree | 21cbf0bdffae328b0351bfa4fd33bfe8a63c3b3f /meta/files | |
parent | d99391f03576de2392b9a35f663390c284eb7dce (diff) | |
download | poky-c3ec554ba5dbe5abcba35724f039baba8a4c27eb.tar.gz |
classes: files: Extend overlayfs-etc class
Add the ability to expose the lower layer of /etc when mounting overlay.
This is the similar to what overlayroot script from initramfs-framework does.
By default, this option is turned off to keep an old behavior intact.
(From OE-Core rev: 791e8a8bacce5a7f31f4d7bcbfb17df2967fd258)
Signed-off-by: Vyacheslav Yurkov <v.yurkov@precitec.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/files')
-rw-r--r-- | meta/files/overlayfs-etc-preinit.sh.in | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/meta/files/overlayfs-etc-preinit.sh.in b/meta/files/overlayfs-etc-preinit.sh.in index 0e80849f12..8db076f4ba 100644 --- a/meta/files/overlayfs-etc-preinit.sh.in +++ b/meta/files/overlayfs-etc-preinit.sh.in | |||
@@ -18,6 +18,7 @@ mount -t sysfs sysfs /sys | |||
18 | BASE_OVERLAY_ETC_DIR={OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc | 18 | BASE_OVERLAY_ETC_DIR={OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc |
19 | UPPER_DIR=$BASE_OVERLAY_ETC_DIR/upper | 19 | UPPER_DIR=$BASE_OVERLAY_ETC_DIR/upper |
20 | WORK_DIR=$BASE_OVERLAY_ETC_DIR/work | 20 | WORK_DIR=$BASE_OVERLAY_ETC_DIR/work |
21 | LOWER_DIR=$BASE_OVERLAY_ETC_DIR/lower | ||
21 | 22 | ||
22 | mkdir -p {OVERLAYFS_ETC_MOUNT_POINT} | 23 | mkdir -p {OVERLAYFS_ETC_MOUNT_POINT} |
23 | if mount -n -t {OVERLAYFS_ETC_FSTYPE} \ | 24 | if mount -n -t {OVERLAYFS_ETC_FSTYPE} \ |
@@ -26,6 +27,14 @@ if mount -n -t {OVERLAYFS_ETC_FSTYPE} \ | |||
26 | then | 27 | then |
27 | mkdir -p $UPPER_DIR | 28 | mkdir -p $UPPER_DIR |
28 | mkdir -p $WORK_DIR | 29 | mkdir -p $WORK_DIR |
30 | |||
31 | if {OVERLAYFS_ETC_EXPOSE_LOWER}; then | ||
32 | mkdir -p $LOWER_DIR | ||
33 | |||
34 | # provide read-only access to original /etc content | ||
35 | mount -o bind,ro /etc $LOWER_DIR | ||
36 | fi | ||
37 | |||
29 | mount -n -t overlay \ | 38 | mount -n -t overlay \ |
30 | -o upperdir=$UPPER_DIR \ | 39 | -o upperdir=$UPPER_DIR \ |
31 | -o lowerdir=/etc \ | 40 | -o lowerdir=/etc \ |