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Use statfs to check rootfs

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This helps support adb remount
This commit is contained in:
LoveSy 2023-02-11 16:20:24 +08:00 committed by John Wu
parent 577b5912af
commit b249832571
1 changed files with 2 additions and 5 deletions
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7
native/src/init/twostage.cpp
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@ -3,6 +3,7 @@
#include <magisk.hpp> #include <magisk.hpp>
#include <base.hpp> #include <base.hpp>
#include <socket.hpp> #include <socket.hpp>
#include <sys/vfs.h>
#include "init.hpp" #include "init.hpp"
@ -39,11 +40,7 @@ bool SecondStageInit::prepare() {
argv[0] = (char *) INIT_PATH; argv[0] = (char *) INIT_PATH;
// Some weird devices like meizu, uses 2SI but still have legacy rootfs // Some weird devices like meizu, uses 2SI but still have legacy rootfs
// Check if root and system are on different filesystems if (struct statfs sfs{}; statfs("/", &sfs) == 0 && sfs.f_type == RAMFS_MAGIC) {
struct stat root{}, system{};
xstat("/", &root);
xstat("/system", &system);
if (root.st_dev != system.st_dev) {
// We are still on rootfs, so make sure we will execute the init of the 2nd stage // We are still on rootfs, so make sure we will execute the init of the 2nd stage
unlink("/init"); unlink("/init");
xsymlink(INIT_PATH, "/init"); xsymlink(INIT_PATH, "/init");