mirrors/poky
1
0
Fork 0
mirror of https://git.yoctoproject.org/poky synced 2026-04-30 21:32:13 +02:00
Code Issues Packages Projects Releases Wiki Activity

mount-copybind: add MOUNT_COPYBIND_AVOID_OVERLAYFS env var to skip OverlayFS

Browse Source 
In some cases we don't want to even attempt to set up OverlayFS, for
example because SELinux in enforcing mode would kill the process
attempting to use the mount. See:

https://lore.kernel.org/all/CA+FmFJBDwt52Z-dVGfuUcnRMiMtGPhK4cCQJ=J_fg0r3x-b6ng@mail.gmail.com/T/#mef98aa406324096d1889d3d467251f30456f403c

If MOUNT_COPYBIND_AVOID_OVERLAYFS=1 is set, skip directly to copy and
bind mount.

(From OE-Core rev: a8e7dca69054798b1c9843a0de889cef3e261c4f)

Signed-off-by: Luca Boccassi <luca.boccassi@microsoft.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Luca Boccassi
2022-03-25 18:40:32 +00:00
committed by Richard Purdie
parent 23ef894641
commit 52cad1fe64
1 changed files with 4 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
meta/recipes-core/volatile-binds/files/mount-copybind
View File

@@ -2,6 +2,9 @@
#
# Perform a bind mount, copying existing files as we do so to ensure the
# overlaid path has the necessary content.
# If the target is a directory and overlayfs is available (and the environment
# variable MOUNT_COPYBIND_AVOID_OVERLAYFS=1 is not set), then an overlay mount
# will be attempted first.
if [ $# -lt 2 ]; then
echo >&2 "Usage: $0 spec mountpoint [OPTIONS]"
@@ -51,7 +54,7 @@ if [ -d "$mountpoint" ]; then
mountcontext=",rootcontext=$(matchpathcon -n "$mountpoint")"
fi
fi
if ! mount -t overlay overlay -olowerdir="$mountpoint",upperdir="$spec",workdir="$overlay_workdir""$mountcontext" "$mountpoint" > /dev/null 2>&1; then
if [ "$MOUNT_COPYBIND_AVOID_OVERLAYFS" = 1 ] || ! mount -t overlay overlay -olowerdir="$mountpoint",upperdir="$spec",workdir="$overlay_workdir""$mountcontext" "$mountpoint" > /dev/null 2>&1; then
if [ "$specdir_existed" != "yes" ]; then
cp -aPR "$mountpoint"/. "$spec/"