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LoveSy 2024-07-17 00:34:35 +08:00 committed by John Wu
parent 0db6314661
commit 2754b1dcf8
1 changed files with 11 additions and 0 deletions
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11
native/src/core/mount.rs
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@ -133,6 +133,12 @@ pub fn setup_mounts() {
};
}
// when partitions have the same fs type, the order is:
// - preinit: it's selected previously, so it's always the first
// - data: it has sufficient space and can be safely written
// - cache: size is limited, but still can be safely written
// - metadata: size is limited, and it might cause unexpected behavior if written
// - persist: it's the last resort, as it's dangerous to write to it
#[derive(PartialEq, Eq, PartialOrd, Ord)]
enum PartId {
PreInit,
@ -165,6 +171,7 @@ pub fn find_preinit_device() -> String {
let mut matched_info = parse_mount_info("self")
.into_iter()
.filter_map(|info| {
// if preinit is already mounted, choose it unconditionally
if info.target.ends_with(PREINITMIRR) {
return Some((PartId::PreInit, info));
}
@ -185,6 +192,8 @@ pub fn find_preinit_device() -> String {
} else {
return None;
}
// take data iff it's not encrypted or file-based encrypted without metadata
// other partitions are always taken
match info.target.as_str() {
"/persist" | "/mnt/vendor/persist" => Some((PartId::Persist, info)),
"/metadata" => Some((PartId::Metadata, info)),
@ -206,8 +215,10 @@ pub fn find_preinit_device() -> String {
at.as_str() == "ext4",
bt.as_str() == "ext4",
) {
// take ext4 over others (f2fs) because f2fs has a kernel bug that causes kernel panic
(true, false) => Less,
(false, true) => Greater,
// if both has the same fs type, compare the mount point
_ => ap.cmp(bp),
},
);