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topjohnwu
2023-03-16 04:13:45 -07:00
committed by John Wu
parent 4e2b88b3d0
commit 76405bd984
2 changed files with 9 additions and 0 deletions
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4
native/src/init/mount.cpp
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@@ -129,6 +129,10 @@ static void mount_preinit_dir(string path, dev_t preinit_dev) {
}
}
// Since we are mounting the block device directly, make sure to ONLY mount the partitions
// as read-only, or else the kernel might crash due to crappy drivers.
// After the device boots up, magiskd will properly bind mount the correct partition
// on to PREINITMIRR as writable. For more details, check bootstages.cpp
if (mounted || mount(PREINITDEV, PREINITMNT, "ext4", MS_RDONLY, nullptr) == 0 ||
mount(PREINITDEV, PREINITMNT, "f2fs", MS_RDONLY, nullptr) == 0) {
string preinit_dir = resolve_preinit_dir(PREINITMNT);