Add qemu_strndup: qemu_strdup with length limit.
Also optimise qemu_strdup by using memcpy - using pstrcpy is usually
suboptimal.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5653 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/qemu-malloc.c b/qemu-malloc.c
index 3bffae1..dc74efe 100644
--- a/qemu-malloc.c
+++ b/qemu-malloc.c
@@ -60,6 +60,20 @@
ptr = qemu_malloc(len + 1);
if (!ptr)
return NULL;
- pstrcpy(ptr, len + 1, str);
+ memcpy(ptr, str, len + 1);
return ptr;
}
+
+char *qemu_strndup(const char *str, size_t size)
+{
+ const char *end = memchr(str, 0, size);
+ char *new;
+
+ if (end)
+ size = end - str;
+
+ new = qemu_malloc(size + 1);
+ new[size] = 0;
+
+ return memcpy(new, str, size);
+}
