Add /mnt/vendor rw mount point for vendor partitions.
Changes to init's behavior during early mount:
1. Mounting of tmpfs on /mnt is moved from init stage to early mount.
2. init creates /mnt/vendor used to mount vendor partitions.
3. If a device tree fstab entry for early mount specifies a mount point
under /mnt/vendor e.g. /mnt/vendor/foo, init will create
/mnt/vendor/foo mount point.
Bug: 64905218
Test: change dt fstab entry to mount persist to /mnt/vendor/persist;
mount point is created correctly, and partition is mounted in early
mount. See go/pag/1069774
Test: device boots with /mnt/vendor and previous contents of /mnt present,
and selinux label "mnt_vendor_file" is applied correctly.
Test: cts-tradefed run commandAndExit cts --skip-all-system-status-check
--primary-abi-only --skip-preconditions -m CtsAppSecurityHostTestCases
-t android.appsecurity.cts.PermissionsHostTest
Change-Id: I3739130739eadf508355c7f2531366fcaed74175
Merged-In: I3739130739eadf508355c7f2531366fcaed74175
(cherry picked from commit b51147566461d411ad452df81d54dc800c554e06)
diff --git a/init/init.cpp b/init/init.cpp
index 2f3b28a..40b7e87 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -624,6 +624,14 @@
mknod("/dev/random", S_IFCHR | 0666, makedev(1, 8));
mknod("/dev/urandom", S_IFCHR | 0666, makedev(1, 9));
+ // Mount staging areas for devices managed by vold
+ // See storage config details at http://source.android.com/devices/storage/
+ mount("tmpfs", "/mnt", "tmpfs", MS_NOEXEC | MS_NOSUID | MS_NODEV,
+ "mode=0755,uid=0,gid=1000");
+ // /mnt/vendor is used to mount vendor-specific partitions that can not be
+ // part of the vendor partition, e.g. because they are mounted read-write.
+ mkdir("/mnt/vendor", 0755);
+
// Now that tmpfs is mounted on /dev and we have /dev/kmsg, we can actually
// talk to the outside world...
InitKernelLogging(argv);
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 1462570..2d64144 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -21,9 +21,6 @@
# Set the security context of /adb_keys if present.
restorecon /adb_keys
- # Shouldn't be necessary, but sdcard won't start without it. http://b/22568628.
- mkdir /mnt 0775 root system
-
# Set the security context of /postinstall if present.
restorecon /postinstall
@@ -80,9 +77,6 @@
chmod 0664 /dev/stune/top-app/tasks
chmod 0664 /dev/stune/rt/tasks
- # Mount staging areas for devices managed by vold
- # See storage config details at http://source.android.com/tech/storage/
- mount tmpfs tmpfs /mnt nodev noexec nosuid mode=0755,uid=0,gid=1000
restorecon_recursive /mnt
mount configfs none /config nodev noexec nosuid