info.h revision c462eb94f5e4f8b9dcb101ce4e4fcc714ddd7410
1/* Copyright (C) 2008 The Android Open Source Project 2** 3** This software is licensed under the terms of the GNU General Public 4** License version 2, as published by the Free Software Foundation, and 5** may be copied, distributed, and modified under those terms. 6** 7** This program is distributed in the hope that it will be useful, 8** but WITHOUT ANY WARRANTY; without even the implied warranty of 9** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10** GNU General Public License for more details. 11*/ 12#ifndef ANDROID_AVD_INFO_H 13#define ANDROID_AVD_INFO_H 14 15#include "android/utils/ini.h" 16#include "android/avd/hw-config.h" 17#include "android/config/config.h" 18 19/* An Android Virtual Device (AVD for short) corresponds to a 20 * directory containing all kernel/disk images for a given virtual 21 * device, as well as information about its hardware capabilities, 22 * SDK version number, skin, etc... 23 * 24 * Each AVD has a human-readable name and is backed by a root 25 * configuration file and a content directory. For example, an 26 * AVD named 'foo' will correspond to the following: 27 * 28 * - a root configuration file named ~/.android/avd/foo.ini 29 * describing where the AVD's content can be found 30 * 31 * - a content directory like ~/.android/avd/foo/ containing all 32 * disk image and configuration files for the virtual device. 33 * 34 * the 'foo.ini' file should contain at least one line of the form: 35 * 36 * rootPath=<content-path> 37 * 38 * it may also contain other lines that cache stuff found in the 39 * content directory, like hardware properties or SDK version number. 40 * 41 * it is possible to move the content directory by updating the foo.ini 42 * file to point to the new location. This can be interesting when your 43 * $HOME directory is located on a network share or in a roaming profile 44 * (Windows), given that the content directory of a single virtual device 45 * can easily use more than 100MB of data. 46 * 47 */ 48 49 50/* a macro used to define the list of disk images managed by the 51 * implementation. This macro will be expanded several times with 52 * varying definitions of _AVD_IMG 53 */ 54#define AVD_IMAGE_LIST \ 55 _AVD_IMG(KERNEL,"kernel-qemu","kernel") \ 56 _AVD_IMG(RAMDISK,"ramdisk.img","ramdisk") \ 57 _AVD_IMG(INITSYSTEM,"system.img","init system") \ 58 _AVD_IMG(INITDATA,"userdata.img","init data") \ 59 _AVD_IMG(USERSYSTEM,"system-qemu.img","user system") \ 60 _AVD_IMG(USERDATA,"userdata-qemu.img", "user data") \ 61 _AVD_IMG(CACHE,"cache.img","cache") \ 62 _AVD_IMG(SDCARD,"sdcard.img","SD Card") \ 63 _AVD_IMG(SNAPSHOTS,"snapshots.img","snapshots") \ 64 65/* define the enumared values corresponding to each AVD image type 66 * examples are: AVD_IMAGE_KERNEL, AVD_IMAGE_SYSTEM, etc.. 67 */ 68#define _AVD_IMG(x,y,z) AVD_IMAGE_##x , 69typedef enum { 70 AVD_IMAGE_LIST 71 AVD_IMAGE_MAX /* do not remove */ 72} AvdImageType; 73#undef _AVD_IMG 74 75/* AvdInfo is an opaque structure used to model the information 76 * corresponding to a given AVD instance 77 */ 78typedef struct AvdInfo AvdInfo; 79 80/* various flags used when creating an AvdInfo object */ 81typedef enum { 82 /* use to force a data wipe */ 83 AVDINFO_WIPE_DATA = (1 << 0), 84 /* use to ignore the cache partition */ 85 AVDINFO_NO_CACHE = (1 << 1), 86 /* use to wipe cache partition, ignored if NO_CACHE is set */ 87 AVDINFO_WIPE_CACHE = (1 << 2), 88 /* use to ignore ignore SDCard image (default or provided) */ 89 AVDINFO_NO_SDCARD = (1 << 3), 90 /* use to wipe the system image with new initial values */ 91 AVDINFO_WIPE_SYSTEM = (1 << 4), 92 /* use to ignore ignore state snapshot image (default or provided) */ 93 AVDINFO_NO_SNAPSHOTS = (1 << 5), 94} AvdFlags; 95 96typedef struct { 97 unsigned flags; 98 const char* skinName; 99 const char* skinRootPath; 100 const char* forcePaths[AVD_IMAGE_MAX]; 101} AvdInfoParams; 102 103/* Creates a new AvdInfo object from a name. Returns NULL if name is NULL 104 * or contains characters that are not part of the following list: 105 * letters, digits, underscores, dashes and periods 106 */ 107AvdInfo* avdInfo_new( const char* name, AvdInfoParams* params ); 108 109/* A special function used to setup an AvdInfo for use when starting 110 * the emulator from the Android build system. In this specific instance 111 * we're going to create temporary files to hold all writable image 112 * files, and activate all hardware features by default 113 * 114 * 'androidBuildRoot' must be the absolute path to the root of the 115 * Android build system (i.e. the 'android' directory) 116 * 117 * 'androidOut' must be the target-specific out directory where 118 * disk images will be looked for. 119 */ 120AvdInfo* avdInfo_newForAndroidBuild( const char* androidBuildRoot, 121 const char* androidOut, 122 AvdInfoParams* params ); 123 124/* Frees an AvdInfo object and the corresponding strings that may be 125 * returned by its getXXX() methods 126 */ 127void avdInfo_free( AvdInfo* i ); 128 129/* Return the name of the Android Virtual Device 130 */ 131const char* avdInfo_getName( AvdInfo* i ); 132 133/* Return the target API level for this AVD. 134 * Note that this will be some ridiculously large 135 * value (e.g. 1000) if this value cannot be properly 136 * determined (e.g. you're using an AVD from a preview SDK) 137 */ 138int avdInfo_getApiLevel( AvdInfo* i ); 139 140/* Returns the path to various images corresponding to a given AVD. 141 * NULL if the image cannot be found. Returned strings must be freed 142 * by the caller. 143 */ 144char* avdInfo_getKernelPath( AvdInfo* i ); 145char* avdInfo_getRamdiskPath( AvdInfo* i ); 146char* avdInfo_getSdCardPath( AvdInfo* i ); 147char* avdInfo_getSnapStoragePath( AvdInfo* i ); 148 149/* This function returns NULL if the cache image file cannot be found. 150 * Use avdInfo_getDefaultCachePath() to retrieve the default path 151 * if you intend to create the partition file there. 152 */ 153char* avdInfo_getCachePath( AvdInfo* i ); 154char* avdInfo_getDefaultCachePath( AvdInfo* i ); 155 156 157/* avdInfo_getSystemImagePath() will return NULL, except if the AVD content 158 * directory contains a file named "system-qemu.img". 159 */ 160char* avdInfo_getSystemImagePath( AvdInfo* i ); 161 162/* avdInfo_getSystemInitImagePath() retrieves the path to the read-only 163 * initialization image for this disk image. 164 */ 165char* avdInfo_getSystemInitImagePath( AvdInfo* i ); 166 167char* avdInfo_getDataImagePath( AvdInfo* i ); 168char* avdInfo_getDefaultDataImagePath( AvdInfo* i ); 169char* avdInfo_getDataInitImagePath( AvdInfo* i ); 170 171/* Returns the path to a given AVD image file. This will return NULL if 172 * the file cannot be found / does not exist. 173 */ 174const char* avdInfo_getImagePath( AvdInfo* i, AvdImageType imageType ); 175 176/* Returns the default path of a given AVD image file. This only makes sense 177 * if avdInfo_getImagePath() returned NULL. 178 */ 179const char* avdInfo_getImageDefaultPath( AvdInfo* i, AvdImageType imageType ); 180 181 182/* Try to find the path of a given image file, returns NULL 183 * if the corresponding file could not be found. the string 184 * belongs to the AvdInfo object. 185 */ 186const char* avdInfo_getImageFile( AvdInfo* i, AvdImageType imageType ); 187 188/* Return the size of a given image file. Returns 0 if the file 189 * does not exist or could not be accessed. 190 */ 191uint64_t avdInfo_getImageFileSize( AvdInfo* i, AvdImageType imageType ); 192 193/* Returns 1 if the corresponding image file is read-only 194 */ 195int avdInfo_isImageReadOnly( AvdInfo* i, AvdImageType imageType ); 196 197/* lock an image file if it is writable. returns 0 on success, or -1 198 * otherwise. note that if the file is read-only, it doesn't need to 199 * be locked and the function will return success. 200 */ 201int avdInfo_lockImageFile( AvdInfo* i, AvdImageType imageType, int abortOnError); 202 203/* Manually set the path of a given image file. */ 204void avdInfo_setImageFile( AvdInfo* i, AvdImageType imageType, const char* imagePath ); 205 206/* Returns the content path of the virtual device */ 207const char* avdInfo_getContentPath( AvdInfo* i ); 208 209/* Retrieve the AVD's specific skin information. 210 * On exit: 211 * '*pSkinName' points to the skin's name. 212 * '*pSkinDir' points to the skin's directory. 213 * 214 * Note that the skin's content will be under <skinDir>/<skinName>. 215 */ 216void avdInfo_getSkinInfo( AvdInfo* i, char** pSkinName, char** pSkinDir ); 217 218/* Returns TRUE iff in the Android build system */ 219int avdInfo_inAndroidBuild( AvdInfo* i ); 220 221/* Returns the target ABI for the corresponding platform image. 222 * This may return NULL if it cannot be determined. Otherwise this is 223 * a string like "armeabi", "armeabi-v7a" or "x86" that must be freed 224 * by the caller. 225 */ 226char* avdInfo_getTargetAbi( AvdInfo* i ); 227 228/* Reads the AVD's hardware configuration into 'hw'. returns -1 on error, 0 otherwise */ 229int avdInfo_initHwConfig( AvdInfo* i, AndroidHwConfig* hw ); 230 231/* Returns a *copy* of the path used to store trace 'foo'. result must be freed by caller */ 232char* avdInfo_getTracePath( AvdInfo* i, const char* traceName ); 233 234/* Returns the path of the hardware.ini where we will write the AVD's 235 * complete hardware configuration before launching the corresponding 236 * core. 237 */ 238const char* avdInfo_getCoreHwIniPath( AvdInfo* i ); 239 240/* */ 241 242#endif /* ANDROID_AVD_INFO_H */ 243