sandbox: support logfile rotation

Fixes bug 12032; bugfix on 0.2.5.1-alpha

2 files changed, 24 insertions, 0 deletions

diff --git a/src/common/log.c b/src/common/log.c
index 592dc2c5d..517fa4faa 100644
--- a/src/common/log.c
+++ b/src/common/log.c
@@ -562,6 +562,27 @@ tor_log_update_sigsafe_err_fds(void)
   UNLOCK_LOGS();
 }
 
+/** Add to <b>out</b> a copy of every currently configured log file name. Used
+ * to enable access to these filenames with the sandbox code. */
+void
+tor_log_get_logfile_names(smartlist_t *out)
+{
+  logfile_t *lf;
+  tor_assert(out);
+
+  LOCK_LOGS();
+
+  for (lf = logfiles; lf; lf = lf->next) {
+    if (lf->is_temporary || lf->is_syslog || lf->callback)
+      continue;
+    if (lf->filename == NULL)
+      continue;
+    smartlist_add(out, tor_strdup(lf->filename));
+  }
+
+  UNLOCK_LOGS();
+}
+
 /** Output a message to the log, prefixed with a function name <b>fn</b>. */
 #ifdef __GNUC__
 /** GCC-based implementation of the log_fn backend, used when we have
diff --git a/src/common/torlog.h b/src/common/torlog.h
index f6ddca5d4..34f70f3c0 100644
--- a/src/common/torlog.h
+++ b/src/common/torlog.h
@@ -156,6 +156,9 @@ void tor_log_err_sigsafe(const char *m, ...);
 int tor_log_get_sigsafe_err_fds(const int **out);
 void tor_log_update_sigsafe_err_fds(void);
 
+struct smartlist_t;
+void tor_log_get_logfile_names(struct smartlist_t *out);
+
 extern int log_global_min_severity_;
 
 #if defined(__GNUC__) || defined(RUNNING_DOXYGEN)