tools: acrn-crashlog: replace fdisk and losetup with api
Use api in loop.c to replace fdisk and losetup. There is no functional change. Signed-off-by: Liu, Xinwu <xinwu.liu@intel.com> Acked-by: Chen Gang <gang.c.chen@intel.com>
This commit is contained in:
Liu, Xinwu
lijinxia
parent
134e79aca2
commit
ea8cb410c5
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@ -17,10 +17,11 @@
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#include "log_sys.h"
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#include "fsutils.h"
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#include "history.h"
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#include "loop.h"
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#define VM_WARNING_LINES 2000
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#define LOOP_DEV_MAX 8
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#define ANDROID_DATA_PAR_NAME "data"
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#define ANDROID_EVT_KEY_LEN 20
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static const char *android_img = "/data/android/android.img";
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@ -452,137 +453,51 @@ static void get_last_line_synced(const struct sender_t *sender)
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}
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}
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static int is_data_partition(char *loop_dev)
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{
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int ret = 0;
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char *out = exec_out2mem("debugfs -R \"ls\" %s", loop_dev);
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if (!out) {
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LOGE("debugfs -R ls %s failed, error (%s)\n", loop_dev,
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strerror(errno));
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return 0;
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}
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if (strstr(out, "app-lib") &&
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strstr(out, "tombstones") &&
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strstr(out, "dalvik-cache")) {
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ret = 1;
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}
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free(out);
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return ret;
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}
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static char *setup_loop_dev(void)
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{
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/* Currently UOS image(/data/android/android.img) mounted by
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* launch_UOS.sh, we need mount its data partition to loop device
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*/
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char *out;
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char *end;
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char loop_dev_tmp[32];
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int i;
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int res;
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int devnr;
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if (!file_exists(android_img)) {
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LOGW("img(%s) is not available\n", android_img);
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return NULL;
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}
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loop_dev = exec_out2mem("losetup -f");
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if (!loop_dev) {
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/* get cmd out fail */
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LOGE("losetup -f failed, error (%s)\n",
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strerror(errno));
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return NULL;
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} else if (strncmp(loop_dev, "/dev/loop", strlen("/dev/loop"))) {
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/* it's not a loop dev */
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LOGE("get error loop dev (%s)\n", loop_dev);
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goto free_loop_dev;
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} else if (strncmp(loop_dev, "/dev/loop0", strlen("/dev/loop0"))) {
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/* it's not loop0, was img mounted? */
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for (i = 0; i < LOOP_DEV_MAX; i++) {
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snprintf(loop_dev_tmp, ARRAY_SIZE(loop_dev_tmp),
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"/dev/loop%d", i);
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if (is_data_partition(loop_dev_tmp)) {
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free(loop_dev);
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loop_dev = strdup(loop_dev_tmp);
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if (!loop_dev) {
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LOGE("out of memory\n");
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return NULL;
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}
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return loop_dev;
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devnr = loopdev_num_get_free();
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for (i = 0; i < devnr; i++) {
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snprintf(loop_dev_tmp, ARRAY_SIZE(loop_dev_tmp),
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"/dev/loop%d", i);
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if (loopdev_check_parname(loop_dev_tmp,
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ANDROID_DATA_PAR_NAME)) {
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loop_dev = strdup(loop_dev_tmp);
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if (!loop_dev) {
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LOGE("out of memory\n");
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return NULL;
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}
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}
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}
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end = strchr(loop_dev, '\n');
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if (end)
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*end = 0;
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out = exec_out2mem("fdisk -lu %s", android_img);
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if (!out) {
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LOGE("fdisk -lu %s failed, error (%s)\n", android_img,
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strerror(errno));
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goto free_loop_dev;
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}
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/* find data partition, sector unit = 512 bytes */
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char partition_start[32];
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char sectors[32];
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unsigned long pstart;
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char *partition;
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const char * const partition_fmt =
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IGN_ONEWORD "%31[^ ]" IGN_SPACES
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IGN_ONEWORD "%31[^ ]" IGN_RESTS;
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char *cursor = out;
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int ret;
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while (cursor &&
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(partition = strstr(cursor, android_img))) {
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cursor = strchr(partition, '\n');
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ret = sscanf(partition, partition_fmt,
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partition_start, sectors);
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if (ret != 2)
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continue;
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LOGD("start (%s) sectors(%s)\n", partition_start, sectors);
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/* size < 1G */
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if (atoi(sectors) < 1 * 2 * 1024 * 1024)
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continue;
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pstart = atol(partition_start) * 512;
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if (pstart == 0)
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continue;
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ret = exec_out2file(NULL, "losetup -o %lu %s %s",
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pstart, loop_dev, android_img);
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/* if error occurs, is_data_partition will return false,
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* only print error message here.
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*/
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if (ret != 0)
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LOGE("(losetup -o %lu %s %s) failed, return %d\n",
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pstart, loop_dev, android_img, ret);
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if (is_data_partition(loop_dev)) {
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goto success;
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} else {
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ret = exec_out2file(NULL, "losetup -d %s", loop_dev);
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/* may lose a loop dev */
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if (ret != 0)
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LOGE("(losetup -d %s) failed, return %d\n",
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loop_dev, ret);
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sleep(1);
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return loop_dev;
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}
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}
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free(out);
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free_loop_dev:
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free(loop_dev);
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res = asprintf(&loop_dev, "/dev/loop%d", devnr);
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if (res == -1) {
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LOGE("out of memory\n");
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return NULL;
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}
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return NULL;
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res = loopdev_set_img_par(loop_dev, android_img, ANDROID_DATA_PAR_NAME);
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if (res == -1) {
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LOGE("failed to setup loopdev.\n");
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free(loop_dev);
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loop_dev = NULL;
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return NULL;
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}
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success:
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free(out);
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return loop_dev;
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}
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