android修改RAM和ROM在设置中的显示 |
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所有存储设备约定成俗，实际容量会比显示容量小。比如，1TB厂商会以1000GB计算，而不是1024GB，所以显示的是1000/1024=976GB。 android设备也是如此，对外规格有1+8和2+16，故客户希望显示实际的值。 RAM android RAM是直接读取/proc/meminfo里的数值，修改的接口是在framework层，仅需在此修改即可解决设置中显示的数值。 这里需要注意的是，无法针对第三方检测软件，因为第三方无需root也能直接读取/proc/meminfo的值。 P2000L:/ $ cat /proc/meminfo MemTotal: 1930740 kB MemFree: 212328 kB Buffers: 31960 kB Cached: 808864 kB SwapCached: 0 kB Active: 786688 kB Inactive: 500180 kB Active(anon): 446392 kB Inactive(anon): 1124 kB Active(file): 340296 kB Inactive(file): 499056 kB Unevictable: 256 kB Mlocked: 256 kB SwapTotal: 524284 kB SwapFree: 524284 kB Dirty: 0 kB Writeback: 0 kB AnonPages: 446340 kB Mapped: 279252 kB Shmem: 1488 kB Slab: 255676 kB SReclaimable: 40900 kB SUnreclaim: 214776 kB KernelStack: 21264 kB PageTables: 29404 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 1489652 kB Committed_AS: 40764468 kB VmallocTotal: 251658176 kB VmallocUsed: 103424 kB VmallocChunk: 251454644 kB通过指令可以获取MemTotal、MemFree等数值，上层在读取之后构建数组分别存储这些数值。 在存储时做特殊的修改即可。 这里需要注意，只要是系统直接读取/proc/meminfo的地方都需要修改，目前作者在测试的协助下找到2处。 Index: frameworks/base/core/jni/android_os_Debug.cpp =================================================================== --- frameworks/base/core/jni/android_os_Debug.cpp (版本 491) +++ frameworks/base/core/jni/android_os_Debug.cpp (工作副本) @@ -737,6 +737,11 @@ }; long mem[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; + // @ + for BUG # { + static const long RAM_1G = 1048576L; + static const long RAM_2G = 2097152L; + // @ + for BUG # } + char* p = buffer; while (*p && numFound < (sizeof(tagsLen) / sizeof(tagsLen[0]))) { int i = 0; @@ -751,6 +756,15 @@ p++; } mem[i] = atoll(num); + // @ + for BUG # { + if (i == 0) { + if (mem[i] < RAM_1G) { + mem[i] = RAM_1G; + } else if (mem[i] > RAM_1G && mem[i] < RAM_2G) { + mem[i] = RAM_2G; + } + } + // @ + for BUG # } numFound++; break; } Index: frameworks/base/core/jni/android_util_Process.cpp =================================================================== --- frameworks/base/core/jni/android_util_Process.cpp (版本 491) +++ frameworks/base/core/jni/android_util_Process.cpp (工作副本) @@ -609,6 +609,11 @@ size_t numFound = 0; jlong mem = 0; + + // @ + for BUG # { + static const long RAM_1G = 1048576L * 1024; + static const long RAM_2G = 2097152L * 1024; + // @ + for BUG # } char* p = buffer; while (*p && numFound < num) { @@ -625,6 +630,15 @@ if (*p == 0) p--; } mem += atoll(num) * 1024; + // @ + for BUG # { + if (i == 0) { + if (mem < RAM_1G) { + mem = RAM_1G; + } else if (mem > RAM_1G && mem < RAM_2G) { + mem = RAM_2G; + } + } + // @ + for BUG # } numFound++; break; }ROM android rom实现的机制没有深究，在android N之前的该法： Index: frameworks/base/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java =================================================================== --- frameworks/base/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java (版本 495) +++ frameworks/base/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java (工作副本) @@ -222,9 +222,15 @@ try { final StructStatVfs stat = Os.statvfs(path); - final long totalSize = stat.f_blocks * stat.f_bsize; - final long availSize = stat.f_bavail * stat.f_bsize; - return new long[] { totalSize, availSize }; + if ("/data".equals(path)) { // @ + + final long totalSize = 8589934592L; // set totalSize (ROM) to 8Gb. + final long availSize = stat.f_bavail * stat.f_bsize; + return new long[] { totalSize, availSize }; + } else { + final long totalSize = stat.f_blocks * stat.f_bsize; + final long availSize = stat.f_bavail * stat.f_bsize; + return new long[] { totalSize, availSize }; + } } catch (ErrnoException e) { throw new IllegalStateException(e); }android N之后的该法： Index: frameworks/base/core/java/android/os/storage/StorageManager.java =================================================================== --- frameworks/base/core/java/android/os/storage/StorageManager.java (版本 495) +++ frameworks/base/core/java/android/os/storage/StorageManager.java (工作副本) @@ -142,11 +142,8 @@ }; private static final int INTERNAL_STORAGE_SECTOR_SIZE = 512; - // @ + for BUG # { - private static final long TOTAL_8G = 8589934592L; - private static final long TOTAL_16G = 17179869184L; - // @ + for BUG # } + private final Context mContext; private final ContentResolver mResolver; @@ -939,14 +936,6 @@ for (String path : INTERNAL_STORAGE_SIZE_PATHS) { final long numberBlocks = readLong(path); if (numberBlocks > 0) { - // @ + for BUG # { - if (numberBlocks * INTERNAL_STORAGE_SECTOR_SIZE < TOTAL_8G) { - return TOTAL_8G; - } else if (numberBlocks * INTERNAL_STORAGE_SECTOR_SIZE > TOTAL_8G && - numberBlocks * INTERNAL_STORAGE_SECTOR_SIZE < TOTAL_16G) { - return TOTAL_16G; - } - // @ +- for BUG # } return numberBlocks * INTERNAL_STORAGE_SECTOR_SIZE; } } |
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