freestanding-wrapper: fix ptpd_netif_read_calibration_data(), check whether…

freestanding-wrapper: fix ptpd_netif_read_calibration_data(), check whether deltaTx and deltaRx pointers are not NULL to prevent memory corruption

freestanding-wrapper: fix ptpd_netif_read_calibration_data(), check whether…
freestanding-wrapper: fix ptpd_netif_read_calibration_data(), check whether deltaTx and deltaRx pointers are not NULL to prevent memory corruption
d9f2709b · Grzegorz Daniluk · 52c309d2 · d9f2709b
Commit d9f2709b authored Jun 01, 2012 by Grzegorz Daniluk
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Showing with 6 additions and 2 deletions

freestanding-wrapper.c libposix/freestanding-wrapper.c +6 -2

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--- a/libposix/freestanding-wrapper.c
+++ b/libposix/freestanding-wrapper.c
@@ -592,14 +592,18 @@ int ptpd_netif_read_calibration_data(const char *ifaceName, uint64_t *deltaTx,
    //check if tx is calibrated,
    // if so read data
    if(state.tx_calibrated)
-      *deltaTx = state.delta_tx;
+    {
+      if(deltaTx) *deltaTx = state.delta_tx;
+    }
    else
      return PTPD_NETIF_NOT_FOUND;

    //check if rx is calibrated,
    // if so read data
    if(state.rx_calibrated)
-      *deltaRx = state.delta_rx;
+    {
+      if(deltaRx) *deltaRx = state.delta_rx;
+    }
    else
      return PTPD_NETIF_NOT_FOUND;