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Merge "remount: Auto remount option (-R) also tries to gain root" into main

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Treehugger Robot 2024-02-05 23:47:54 +00:00 committed by Gerrit Code Review
commit eadf6b4bda
1 changed files with 14 additions and 1 deletions
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15
fs_mgr/fs_mgr_remount.cpp
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@ -42,6 +42,7 @@
#include <fstab/fstab.h>
#include <libavb_user/libavb_user.h>
#include <libgsi/libgsid.h>
#include <private/android_filesystem_config.h>
#include "fs_mgr_overlayfs_control.h"
#include "fs_mgr_overlayfs_mount.h"
@ -608,7 +609,19 @@ int main(int argc, char* argv[]) {
}
// Make sure we are root.
if (::getuid() != 0) {
if (const auto uid = ::getuid(); uid != AID_ROOT) {
// If requesting auto reboot, also try to auto gain root.
if (auto_reboot && uid == AID_SHELL && access("/system/xbin/su", F_OK) == 0) {
std::vector<char*> args{const_cast<char*>("/system/xbin/su"),
const_cast<char*>("root")};
for (int i = 0; i < argc; ++i) {
args.push_back(argv[i]);
}
args.push_back(nullptr);
LOG(INFO) << "Attempting to gain root with \"su root\"";
execv(args[0], args.data());
PLOG(ERROR) << "Failed to execute \"su root\"";
}
LOG(ERROR) << "Not running as root. Try \"adb root\" first.";
return EXIT_FAILURE;
}