support "sideload over ADB" mode
Rather than depending on the existence of some place to store a file
that is accessible to users on an an unbootable device (eg, a physical
sdcard, external USB drive, etc.), add support for sideloading
packages sent to the device with adb.
This change adds a "minimal adbd" which supports nothing but receiving
a package over adb (with the "adb sideload" command) and storing it to
a fixed filename in the /tmp ramdisk, from where it can be verified
and sideloaded in the usual way. This should be leave available even
on locked user-build devices.
The user can select "apply package from ADB" from the recovery menu,
which starts minimal-adb mode (shutting down any real adbd that may be
running). Once minimal-adb has received a package it exits
(restarting real adbd if appropriate) and then verification and
installation of the received package proceeds.
Change-Id: I6fe13161ca064a98d06fa32104e1f432826582f5
diff --git a/recovery.cpp b/recovery.cpp
index da9334a..726442b 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -40,6 +40,10 @@
#include "ui.h"
#include "screen_ui.h"
#include "device.h"
+#include "adb_install.h"
+extern "C" {
+#include "minadbd/adb.h"
+}
static const struct option OPTIONS[] = {
{ "send_intent", required_argument, NULL, 's' },
@@ -725,6 +729,21 @@
}
}
break;
+
+ case Device::APPLY_ADB_SIDELOAD:
+ ensure_path_mounted(CACHE_ROOT);
+ status = apply_from_adb(ui, &wipe_cache, TEMPORARY_INSTALL_FILE);
+ if (status >= 0) {
+ if (status != INSTALL_SUCCESS) {
+ ui->SetBackground(RecoveryUI::ERROR);
+ ui->Print("Installation aborted.\n");
+ } else if (!ui->IsTextVisible()) {
+ return; // reboot if logs aren't visible
+ } else {
+ ui->Print("\nInstall from ADB complete.\n");
+ }
+ }
+ break;
}
}
}
@@ -741,6 +760,19 @@
// If these fail, there's not really anywhere to complain...
freopen(TEMPORARY_LOG_FILE, "a", stdout); setbuf(stdout, NULL);
freopen(TEMPORARY_LOG_FILE, "a", stderr); setbuf(stderr, NULL);
+
+ // If this binary is started with the single argument "--adbd",
+ // instead of being the normal recovery binary, it turns into kind
+ // of a stripped-down version of adbd that only supports the
+ // 'sideload' command. Note this must be a real argument, not
+ // anything in the command file or bootloader control block; the
+ // only way recovery should be run with this argument is when it
+ // starts a copy of itself from the apply_from_adb() function.
+ if (argc == 2 && strcmp(argv[1], "--adbd") == 0) {
+ adb_main();
+ return 0;
+ }
+
printf("Starting recovery on %s", ctime(&start));
Device* device = make_device();