Changes in uspace/srv/bd/file_bd/file_bd.c [6c01702:ed903174] in mainline

File:

• uspace/srv/bd/file_bd/file_bd.c (modified) (4 diffs)

uspace/srv/bd/file_bd/file_bd.c

@@ -48 +48 @@
 #include <devmap.h>
 #include <sys/types.h>
+#include <sys/typefmt.h>
 #include <errno.h>
 #include <bool.h>
@@ -56 +57 @@
 
 static const size_t block_size = 512;
-static bn_t num_blocks;
+static aoff64_t num_blocks;
 static FILE *img;
 
@@ -207 +208 @@
         int rc;
 
+        /* Check whether access is within device address bounds. */
+        if (ba + cnt > num_blocks) {
+                printf(NAME ": Accessed blocks %" PRIuOFF64 "-%" PRIuOFF64 ", while "
+                    "max block number is %" PRIuOFF64 ".\n", ba, ba + cnt - 1,
+                    num_blocks - 1);
+                return ELIMIT;
+        }
+
         fibril_mutex_lock(&dev_lock);
 
@@ -237 +246 @@
         int rc;
 
+        /* Check whether access is within device address bounds. */
+        if (ba + cnt > num_blocks) {
+                printf(NAME ": Accessed blocks %" PRIuOFF64 "-%" PRIuOFF64 ", while "
+                    "max block number is %" PRIuOFF64 ".\n", ba, ba + cnt - 1,
+                    num_blocks - 1);
+                return ELIMIT;
+        }
+
         fibril_mutex_lock(&dev_lock);