本文转载自：http://blog.csdn.net/tfslovexizi/article/details/73835594
之前看到过一个人写了4.4上添加U盘升级功能的博客http://blog.csdn.net/kris_fei/article/details/50311885，写得挺好。
我们在5.1上也要做同样的功能，具体修改如下：
diff --git a/bootable/recovery/Android.mk b/bootable/recovery/Android.mk
old mode 100644
new mode 100755
index 5a1f479..8b21040
--- a/bootable/recovery/Android.mk
+++ b/bootable/recovery/Android.mk
@@ -39,7 +39,8 @@ LOCAL_SRC_FILES :=
asn1_decoder.cpp
verifier.cpp
adb_install.cpp
- fuse_sdcard_provider.c
+ fuse_sdcard_provider.c
+ fuse_udisk_provider.c
LOCAL_MODULE := recovery
diff --git a/bootable/recovery/default_device.cpp b/bootable/recovery/default_device.cpp
old mode 100644
new mode 100755
index d92aaf5..f4b10ee
--- a/bootable/recovery/default_device.cpp
+++ b/bootable/recovery/default_device.cpp
@@ -33,6 +33,8 @@ static const char* ITEMS[] = {"reboot system now",
"power down",
"view recovery logs",
"apply update from sdcard",
+ "apply update from udisk",
NULL };
class DefaultDevice : public Device {
@@ -73,6 +75,8 @@ class DefaultDevice : public Device {
case 5: return SHUTDOWN;
case 6: return READ_RECOVERY_LASTLOG;
case 7: return APPLY_EXT;
+ case 8: return APPLY_FROM_UDISK;
default: return NO_ACTION;
}
}
diff --git a/bootable/recovery/device.h b/bootable/recovery/device.h
old mode 100644
new mode 100755
index 8ff4ec0..82a3708
--- a/bootable/recovery/device.h
+++ b/bootable/recovery/device.h
@@ -64,8 +64,8 @@ class Device {
// - do nothing (kNoAction)
// - invoke a specific action (a menu position: any non-negative number)
virtual int HandleMenuKey(int key, int visible) = 0;
-
- enum BuiltinAction { NO_ACTION, REBOOT, APPLY_EXT,
+ enum BuiltinAction { NO_ACTION, REBOOT, APPLY_EXT,APPLY_FROM_UDISK,
APPLY_CACHE, // APPLY_CACHE is deprecated; has no effect
APPLY_ADB_SIDELOAD, WIPE_DATA, WIPE_CACHE,
REBOOT_BOOTLOADER, SHUTDOWN, READ_RECOVERY_LASTLOG };
diff --git a/bootable/recovery/etc/init.rc b/bootable/recovery/etc/init.rc
old mode 100644
new mode 100755
index c78a44a..0fcc49f
--- a/bootable/recovery/etc/init.rc
+++ b/bootable/recovery/etc/init.rc
@@ -20,6 +20,7 @@ on init
symlink /system/etc /etc
mkdir /sdcard
+ mkdir /udisk
mkdir /system
mkdir /data
mkdir /cache
diff --git a/bootable/recovery/fuse_udisk_provider.c b/bootable/recovery/fuse_udisk_provider.c
new file mode 100755
index 0000000..789a6eb
--- /dev/null
+++ b/bootable/recovery/fuse_udisk_provider.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <pthread.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include "fuse_sideload.h"
+
+struct file_data {
+ int fd; // the underlying sdcard file
+
+ uint64_t file_size;
+ uint32_t block_size;
+};
+
+static int read_block_file(void* cookie, uint32_t block, uint8_t* buffer, uint32_t fetch_size) {
+ struct file_data* fd = (struct file_data*)cookie;
+
+ if (lseek(fd->fd, block * fd->block_size, SEEK_SET) < 0) {
+ return -EIO;
+ }
+
+ while (fetch_size > 0) {
+ ssize_t r = read(fd->fd, buffer, fetch_size);
+ if (r < 0) {
+ if (r != -EINTR) {
+ return -EIO;
+ }
+ r = 0;
+ }
+ fetch_size -= r;
+ buffer += r;
+ }
+
+ return 0;
+}
+
+static void close_file(void* cookie) {
+ struct file_data* fd = (struct file_data*)cookie;
+ close(fd->fd);
+}
+
+struct token {
+ pthread_t th;
+ const char* path;
+ int result;
+};
+
+static void* run_udisk_fuse(void* cookie) {
+ struct token* t = (struct token*)cookie;
+
+ struct stat sb;
+ if (stat(t->path, &sb) < 0) {
+ t->result = -1;
+ return NULL;
+ }
+
+ struct file_data fd;
+ struct provider_vtab vtab;
+
+ fd.fd = open(t->path, O_RDONLY);
+ if (fd.fd < 0) {
+ t->result = -1;
+ return NULL;
+ }
+ fd.file_size = sb.st_size;
+ fd.block_size = 65536;
+
+ vtab.read_block = read_block_file;
+ vtab.close = close_file;
+
+ t->result = run_fuse_sideload(&vtab, &fd, fd.file_size, fd.block_size);
+ return NULL;
+}
+
+// How long (in seconds) we wait for the fuse-provided package file to
+// appear, before timing out.
+#define UDISK_INSTALL_TIMEOUT 10
+
+void* start_udisk_fuse(const char* path) {
+ struct token* t = malloc(sizeof(struct token));
+
+ t->path = path;
+ pthread_create(&(t->th), NULL, run_udisk_fuse, t);
+
+ struct stat st;
+ int i;
+ for (i = 0; i < UDISK_INSTALL_TIMEOUT; ++i) {
+ if (stat(FUSE_SIDELOAD_HOST_PATHNAME, &st) != 0) {
+ if (errno == ENOENT && i < UDISK_INSTALL_TIMEOUT-1) {
+ sleep(1);
+ continue;
+ } else {
+ return NULL;
+ }
+ }
+ }
+
+ // The installation process expects to find the sdcard unmounted.
+ // Unmount it with MNT_DETACH so that our open file continues to
+ // work but new references see it as unmounted.
+ umount2("/udisk", MNT_DETACH);
+
+ return t;
+}
+
+void finish_udisk_fuse(void* cookie) {
+ if (cookie == NULL) return;
+ struct token* t = (struct token*)cookie;
+
+ // Calling stat() on this magic filename signals the fuse
+ // filesystem to shut down.
+ struct stat st;
+ stat(FUSE_SIDELOAD_HOST_EXIT_PATHNAME, &st);
+
+ pthread_join(t->th, NULL);
+ free(t);
+}
diff --git a/bootable/recovery/fuse_udisk_provider.h b/bootable/recovery/fuse_udisk_provider.h
new file mode 100755
index 0000000..3313e9b
--- /dev/null
+++ b/bootable/recovery/fuse_udisk_provider.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __FUSE_UDISK_PROVIDER_H
+#define __FUSE_UDISK_PROVIDER_H
+
+void* start_udisk_fuse(const char* path);
+void finish_udisk_fuse(void* token);
+
+#endif
diff --git a/bootable/recovery/recovery.cpp b/bootable/recovery/recovery.cpp
old mode 100644
new mode 100755
index 693ef19..b88364d
--- a/bootable/recovery/recovery.cpp
+++ b/bootable/recovery/recovery.cpp
@@ -47,6 +47,8 @@ extern "C" {
#include "minadbd/adb.h"
#include "fuse_sideload.h"
#include "fuse_sdcard_provider.h"
+#include "fuse_udisk_provider.h"
}
struct selabel_handle *sehandle;
@@ -75,6 +77,8 @@ static const char *LAST_INSTALL_FILE = "/cache/recovery/last_install";
static const char *LOCALE_FILE = "/cache/recovery/last_locale";
static const char *CACHE_ROOT = "/cache";
static const char *SDCARD_ROOT = "/sdcard";
+static const char *UDISK_ROOT = "/udisk";
static const char *TEMPORARY_LOG_FILE = "/tmp/recovery.log";
static const char *TEMPORARY_INSTALL_FILE = "/tmp/last_install";
static const char *LAST_KMSG_FILE = "/cache/recovery/last_kmsg";
@@ -267,6 +271,15 @@ set_sdcard_update_bootloader_message() {
set_bootloader_message(&boot);
}
+static void
+set_udisk_update_bootloader_message() {
+ struct bootloader_message boot;
+ memset(&boot, 0, sizeof(boot));
+ strlcpy(boot.command, "boot-recovery", sizeof(boot.command));
+ strlcpy(boot.recovery, "recovery
", sizeof(boot.recovery));
+ set_bootloader_message(&boot);
+}
// read from kernel log into buffer and write out to file
static void
save_kernel_log(const char *destination) {
@@ -893,6 +906,44 @@ prompt_and_wait(Device* device, int status) {
}
}
break;
+ case Device::APPLY_FROM_UDISK: {
+ ensure_path_mounted(UDISK_ROOT);
+ char* path = browse_directory(UDISK_ROOT, device);
+ if (path == NULL) {
+
+ break;
+ }
+ set_udisk_update_bootloader_message();
+ void* token = start_udisk_fuse(path);
+
+ int status = install_package(FUSE_SIDELOAD_HOST_PATHNAME, &wipe_cache,
+ TEMPORARY_INSTALL_FILE, false);
+
+ finish_udisk_fuse(token);
+ ensure_path_unmounted(UDISK_ROOT);
+ if (status == INSTALL_SUCCESS && wipe_cache) {
+
+ if (erase_volume("/cache")) {
+
+ } else {
+ ui->Print("Cache wipe complete.
");
+ }
+ }
+
+ if (status >= 0) {
+ if (status != INSTALL_SUCCESS) {
+ ui->SetBackground(RecoveryUI::ERROR);
+ ui->Print("Installation aborted.
");
+ } else if (!ui->IsTextVisible()) {
+ return Device::NO_ACTION; // reboot if logs aren't visible
+ } else {
+ ui->Print("
Install from udisk complete.
");
+ }
+ }
+ break;
+ }
+
}
}
}
diff --git a/device/qcom/slm753/recovery.fstab b/device/qcom/slm753/recovery.fstab
index 161a8a8..5632b77 100755
--- a/device/qcom/slm753/recovery.fstab
+++ b/device/qcom/slm753/recovery.fstab
@@ -31,6 +31,8 @@
/dev/block/bootdevice/by-name/cache /cache ext4 noatime,nosuid,nodev,barrier=1,data=ordered wait,check
/dev/block/bootdevice/by-name/userdata /data ext4 noatime,nosuid,nodev,barrier=1,data=ordered,noauto_da_alloc wait,check
/dev/block/mmcblk1p1 /sdcard vfat nosuid,nodev,barrier=1,data=ordered,nodelalloc wait
+/dev/block/sda1 /udisk vfat nosuid,nodev,barrier=1,data=ordered,nodelalloc wait
/dev/block/bootdevice/by-name/boot /boot emmc defaults defaults
/dev/block/bootdevice/by-name/recovery /recovery emmc defaults defaults
/dev/block/bootdevice/by-name/misc /misc emmc defaults defaults
好，代码处理OK，全编译验证通过。有问题可以沟通。