ACPR/android_system_core
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init: delete code that sets ro.recovery_id

Browse source 
It looks like this code is dead currently.  From history, this was
meant to be used as a way to check that the recovery image is what was
expected during runtime, but that effort never completed, and we have
full verification of the recovery image when booting into recovery
anyway.

The code is functionally dead as is too, since /recovery doesn't
actually exist in any fstab, since recovery is either mounted as a
ramdisk during recovery or not mounted during normal boot.

Test: boot
Change-Id: I48cd324ef0d5a163db2df2648f6042174b83f10e
This commit is contained in:
Tom Cherry 2019-01-28 10:49:55 -08:00
parent 561498e357
commit d6c2feb9fa
3 changed files with 0 additions and 48 deletions
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36
init/property_service.cpp
View file

@ -49,8 +49,6 @@
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <bootimg.h>
#include <fs_mgr.h>
#include <property_info_parser/property_info_parser.h>
#include <property_info_serializer/property_info_serializer.h>
#include <selinux/android.h>
@ -79,8 +77,6 @@ using android::properties::ParsePropertyInfoFile;
using android::properties::PropertyInfoAreaFile;
using android::properties::PropertyInfoEntry;
#define RECOVERY_MOUNT_POINT "/recovery"
namespace android {
namespace init {
@ -732,37 +728,6 @@ void load_persist_props(void) {
property_set("ro.persistent_properties.ready", "true");
}
void load_recovery_id_prop() {
std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(),
fs_mgr_free_fstab);
if (!fstab) {
PLOG(ERROR) << "unable to read default fstab";
return;
}
fstab_rec* rec = fs_mgr_get_entry_for_mount_point(fstab.get(), RECOVERY_MOUNT_POINT);
if (rec == NULL) {
LOG(ERROR) << "/recovery not specified in fstab";
return;
}
int fd = open(rec->blk_device, O_RDONLY | O_CLOEXEC);
if (fd == -1) {
PLOG(ERROR) << "error opening block device " << rec->blk_device;
return;
}
boot_img_hdr hdr;
if (android::base::ReadFully(fd, &hdr, sizeof(hdr))) {
std::string hex = bytes_to_hex(reinterpret_cast<uint8_t*>(hdr.id), sizeof(hdr.id));
property_set("ro.recovery_id", hex);
} else {
PLOG(ERROR) << "error reading /recovery";
}
close(fd);
}
void property_load_boot_defaults() {
// TODO(b/117892318): merge prop.default and build.prop files into one
// TODO(b/122864654): read the prop files from all partitions and then
@ -783,7 +748,6 @@ void property_load_boot_defaults() {
load_properties_from_file("/odm/build.prop", NULL);
load_properties_from_file("/vendor/build.prop", NULL);
load_properties_from_file("/factory/factory.prop", "ro.*");
load_recovery_id_prop();
update_sys_usb_config();
}

11
init/util.cpp
View file

@ -34,7 +34,6 @@
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <android-base/unique_fd.h>
#include <cutils/sockets.h>
@ -268,16 +267,6 @@ bool make_dir(const std::string& path, mode_t mode) {
return rc == 0;
}
/*
* Writes hex_len hex characters (1/2 byte) to hex from bytes.
*/
std::string bytes_to_hex(const uint8_t* bytes, size_t bytes_len) {
std::string hex("0x");
for (size_t i = 0; i < bytes_len; i++)
android::base::StringAppendF(&hex, "%02x", bytes[i]);
return hex;
}
/*
* Returns true is pathname is a directory
*/

1
init/util.h
View file

@ -51,7 +51,6 @@ int wait_for_file(const char *filename, std::chrono::nanoseconds timeout);
void import_kernel_cmdline(bool in_qemu,
const std::function<void(const std::string&, const std::string&, bool)>&);
bool make_dir(const std::string& path, mode_t mode);
std::string bytes_to_hex(const uint8_t *bytes, size_t bytes_len);
bool is_dir(const char* pathname);
bool expand_props(const std::string& src, std::string* dst);