Changeset 3385dd3 in mainline for uspace/srv/klog/klog.c

Timestamp:

2014-12-11T11:58:23Z (9 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b336613f

Parents:

f42adef

Message:

klog: Read entry length from a possibly unaligned address safely

File:

• uspace/srv/klog/klog.c (modified) (2 diffs)

uspace/srv/klog/klog.c

@@ -53 +53 @@
 #define NAME       "klog"
 
+typedef size_t __attribute__ ((aligned(1))) unaligned_size_t;
+
 typedef struct {
         size_t entry_len;
@@ -109 +111 @@
         size_t offset = 0;
         while (offset < len) {
-                size_t entry_len = *((size_t *) (buffer + offset));
+                size_t entry_len = *((unaligned_size_t *) (buffer + offset));
                 
                 if (offset + entry_len > len || entry_len < sizeof(log_entry_t))