android/SukiSU-Ultra
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Use fallback method to mount overlayfs when fsopen one failed

Browse Source 
Co-authored-by: natsumerinchan
This commit is contained in:
weishu
2024-03-04 12:05:05 +08:00
parent cd772fa250
commit 3829894d4d
1 changed files with 20 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
userspace/ksud/src/mount.rs
View File

@@ -109,14 +109,21 @@ pub fn mount_overlayfs(
upperdir,
workdir
);
if let Result::Ok(fs) = fsopen("overlay", FsOpenFlags::FSOPEN_CLOEXEC) {
let upperdir = upperdir
.filter(|up| up.exists())
.map(|e| e.display().to_string());
let workdir = workdir
.filter(|wd| wd.exists())
.map(|e| e.display().to_string());
let result = (|| {
let fs = fsopen("overlay", FsOpenFlags::FSOPEN_CLOEXEC)?;
let fs = fs.as_fd();
fsconfig_set_string(fs, "lowerdir", lowerdir_config)?;
if let (Some(upperdir), Some(workdir)) = (upperdir, workdir) {
if upperdir.exists() && workdir.exists() {
fsconfig_set_string(fs, "upperdir", upperdir.display().to_string())?;
fsconfig_set_string(fs, "workdir", workdir.display().to_string())?;
}
fsconfig_set_string(fs, "lowerdir", &lowerdir_config)?;
if let (Some(upperdir), Some(workdir)) = (&upperdir, &workdir) {
fsconfig_set_string(fs, "upperdir", upperdir)?;
fsconfig_set_string(fs, "workdir", workdir)?;
}
fsconfig_set_string(fs, "source", KSU_OVERLAY_SOURCE)?;
fsconfig_create(fs)?;
@@ -127,17 +134,14 @@ pub fn mount_overlayfs(
CWD,
dest.as_ref(),
MoveMountFlags::MOVE_MOUNT_F_EMPTY_PATH,
)?;
} else {
)
})();
if let Err(e) = result {
warn!("fsopen mount failed: {:#}, fallback to mount", e);
let mut data = format!("lowerdir={lowerdir_config}");
if let (Some(upperdir), Some(workdir)) = (upperdir, workdir) {
if upperdir.exists() && workdir.exists() {
data = format!(
"{data},upperdir={},workdir={}",
upperdir.display(),
workdir.display()
);
}
data = format!("{data},upperdir={upperdir},workdir={workdir}");
}
mount(
KSU_OVERLAY_SOURCE,