Changeset 17731

Timestamp:

10/10/11 10:21:26 (20 months ago)

Author:

eko

Message:

ttraff: automatic remove of old date if nvram space runs low

File:

• src/router/rc/ttraff.c (modified) (4 diffs)

src/router/rc/ttraff.c

@@ -8 +8 @@
 #include <stdio.h>
 #include <time.h>
+#include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -16 +17 @@
 #include <syslog.h>
 #include <utils.h>
+
+
+void
+remove_oldest_entry(int cur_month, int cur_year)
+{
+        char old[32];
+        int month, year;
+        int len = 0;
+
+        for (year = 2008; year <= cur_year; year++) {
+                for (month = 1; month <= 12; month++) {
+                        if (month == cur_month && year == cur_year) {
+                                return;
+                        }
+                        sprintf(old, "traff-%02u-%u", month, year);
+                        len = strlen(nvram_safe_get(old));
+                        if (len > 0) {
+                                dd_syslog(LOG_DEBUG, 
+                                        "ttraff: old data for %d-%d removed, freeing %d bytes of nvram\n", month, year, len + 15);
+                                nvram_unset(old);
+                                return;
+                        }               
+                }
+        }
+
+        return;
+}
 
 void
@@ -37 +65 @@
         memset(buffer, 0, 2048);
         sprintf(tq, "traff-%02u-%u", month, year);
+
+        /* keep some nvram free by removing oldest traf data */         
+        int space = 0;
+        int used = nvram_used(&space);
+        if ((space - used) < 2048) { /* 2048 bytes to be on a safe side */
+                remove_oldest_entry(month, year);
+        }
+        
         tdata = nvram_safe_get(tq);
         
@@ -89 +125 @@
         return;
 }
+
 
 int main(int argc, char **argv)