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platform_system_core
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init: use '/system' as the system mount point for force_normal_boot 

We need to keep the right mount points in the fstab for other
processes to access (/ for system-as-root or /system otherwise).
Force_normal_boot devices are defacto not system-as-root,
since they're booting through the recovery ramdisk and therefore must
use /system as the system mount point.

Bug: 114062208
Test: boot pixel from recovery with force_normal_boot
Change-Id: Ib0e4e4f8a29299ecdcd35e8f1415551c4c9745ad
This commit is contained in:
Tom Cherry 2018-09-19 16:25:51 -07:00
parent 3da42a6c05
commit c382957789
1 changed files with 14 additions and 6 deletions
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20
init/first_stage_mount.cpp
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@ -120,14 +120,18 @@ static inline bool IsDtVbmetaCompatible() {
return is_android_dt_value_expected("vbmeta/compatible", "android,vbmeta");
}
static bool IsRecoveryMode() {
static bool ForceNormalBoot() {
static bool force_normal_boot = []() {
std::string cmdline;
android::base::ReadFileToString("/proc/cmdline", &cmdline);
return cmdline.find("androidboot.force_normal_boot=1") != std::string::npos;
}();
return !force_normal_boot && access("/system/bin/recovery", F_OK) == 0;
return force_normal_boot;
}
static bool IsRecoveryMode() {
return !ForceNormalBoot() && access("/system/bin/recovery", F_OK) == 0;
}
static inline bool IsDmLinearEnabled() {
@ -368,11 +372,15 @@ bool FirstStageMount::MountPartitions() {
// this case, we mount system first then pivot to it. From that point on,
// we are effectively identical to a system-as-root device.
auto system_partition =
std::find_if(mount_fstab_recs_.begin(), mount_fstab_recs_.end(), [](const auto& rec) {
return rec->mount_point == "/system"s ||
rec->mount_point == "/system_recovery_mount"s;
});
std::find_if(mount_fstab_recs_.begin(), mount_fstab_recs_.end(),
[](const auto& rec) { return rec->mount_point == "/system"s; });
if (system_partition != mount_fstab_recs_.end()) {
if (ForceNormalBoot()) {
free((*system_partition)->mount_point);
(*system_partition)->mount_point = strdup("/system_recovery_mount");
}
if (!MountPartition(*system_partition)) {
return false;
}