diff options
| -rw-r--r-- | adb_install.cpp | 2 | ||||
| -rw-r--r-- | common.h | 1 | ||||
| -rw-r--r-- | install.cpp | 2 | ||||
| -rw-r--r-- | recovery.cpp | 37 |
4 files changed, 33 insertions, 9 deletions
diff --git a/adb_install.cpp b/adb_install.cpp index 6d6dbb1..ed15938 100644 --- a/adb_install.cpp +++ b/adb_install.cpp @@ -74,6 +74,8 @@ maybe_restart_adbd() { int apply_from_adb(RecoveryUI* ui_, bool* wipe_cache, const char* install_file) { + modified_flash = true; + ui = ui_; stop_adbd(); @@ -40,6 +40,7 @@ extern "C" { #define STRINGIFY(x) #x #define EXPAND(x) STRINGIFY(x) +extern bool modified_flash; typedef struct fstab_rec Volume; // fopen a file, mounting volumes and making parent dirs as necessary. diff --git a/install.cpp b/install.cpp index 63b1d38..662f81c 100644 --- a/install.cpp +++ b/install.cpp @@ -256,6 +256,8 @@ int install_package(const char* path, bool* wipe_cache, const char* install_file, bool needs_mount) { + modified_flash = true; + FILE* install_log = fopen_path(install_file, "w"); if (install_log) { fputs(path, install_log); diff --git a/recovery.cpp b/recovery.cpp index 0ba4d1e..2f8654a 100644 --- a/recovery.cpp +++ b/recovery.cpp @@ -92,6 +92,7 @@ char* locale = NULL; char recovery_version[PROPERTY_VALUE_MAX+1]; char* stage = NULL; char* reason = NULL; +bool modified_flash = false; /* * The recovery tool communicates with the main system through /cache files. @@ -337,13 +338,18 @@ copy_log_file(const char* source, const char* destination, int append) { // Rename last_log -> last_log.1 -> last_log.2 -> ... -> last_log.$max // Overwrites any existing last_log.$max. -static void -rotate_last_logs(int max) { +static void rotate_last_logs(int max) { + // Logs should only be rotated once. + static bool rotated = false; + if (rotated) { + return; + } + rotated = true; + ensure_path_mounted(LAST_LOG_FILE); + char oldfn[256]; char newfn[256]; - - int i; - for (i = max-1; i >= 0; --i) { + for (int i = max-1; i >= 0; --i) { snprintf(oldfn, sizeof(oldfn), (i==0) ? LAST_LOG_FILE : (LAST_LOG_FILE ".%d"), i); snprintf(newfn, sizeof(newfn), LAST_LOG_FILE ".%d", i+1); // ignore errors @@ -351,8 +357,17 @@ rotate_last_logs(int max) { } } -static void -copy_logs() { +static void copy_logs() { + // We only rotate and record the log of the current session if there are + // actual attempts to modify the flash, such as wipes, installs from BCB + // or menu selections. This is to avoid unnecessary rotation (and + // possible deletion) of log files, if it does not do anything loggable. + if (!modified_flash) { + return; + } + + rotate_last_logs(KEEP_LOG_COUNT); + // Copy logs to cache so the system can find out what happened. copy_log_file(TEMPORARY_LOG_FILE, LOG_FILE, true); copy_log_file(TEMPORARY_LOG_FILE, LAST_LOG_FILE, false); @@ -692,6 +707,8 @@ static bool wipe_data(int should_confirm, Device* device) { return false; } + modified_flash = true; + ui->Print("\n-- Wiping data...\n"); if (device->WipeData() == 0 && erase_volume("/data") == 0 && erase_volume("/cache") == 0) { ui->Print("Data wipe complete.\n"); @@ -708,6 +725,8 @@ static bool wipe_cache(bool should_confirm, Device* device) { return false; } + modified_flash = true; + ui->Print("\n-- Wiping cache...\n"); if (erase_volume("/cache") == 0) { ui->Print("Cache wipe complete.\n"); @@ -816,6 +835,8 @@ static void choose_recovery_file(Device* device) { } static int apply_from_sdcard(Device* device, bool* wipe_cache) { + modified_flash = true; + if (ensure_path_mounted(SDCARD_ROOT) != 0) { ui->Print("\n-- Couldn't mount %s.\n", SDCARD_ROOT); return INSTALL_ERROR; @@ -990,8 +1011,6 @@ main(int argc, char **argv) { printf("Starting recovery (pid %d) on %s", getpid(), ctime(&start)); load_volume_table(); - ensure_path_mounted(LAST_LOG_FILE); - rotate_last_logs(KEEP_LOG_COUNT); get_args(&argc, &argv); const char *send_intent = NULL; |