diff options
Diffstat (limited to '')
| -rw-r--r-- | recovery.cpp | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/recovery.cpp b/recovery.cpp index a84d8333a..840e63c42 100644 --- a/recovery.cpp +++ b/recovery.cpp @@ -59,10 +59,11 @@ static const struct option OPTIONS[] = { { NULL, 0, NULL, 0 }, }; +#define LAST_LOG_FILE "/cache/recovery/last_log" + static const char *COMMAND_FILE = "/cache/recovery/command"; static const char *INTENT_FILE = "/cache/recovery/intent"; static const char *LOG_FILE = "/cache/recovery/log"; -static const char *LAST_LOG_FILE = "/cache/recovery/last_log"; 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"; @@ -260,6 +261,21 @@ 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) { + char oldfn[256]; + char newfn[256]; + + int i; + for (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 + rename(oldfn, newfn); + } +} // clear the recovery command and prepare to boot a (hopefully working) system, // copy our log file to cache as well (for the system to read), and @@ -843,6 +859,8 @@ main(int argc, char **argv) { printf("Starting recovery on %s", ctime(&start)); load_volume_table(); + ensure_path_mounted(LAST_LOG_FILE); + rotate_last_logs(5); get_args(&argc, &argv); int previous_runs = 0; |