Libc-498.tar.gz

[apple/libc.git] / include / secure / _string.h

diff --git a/include/secure/_string.h b/include/secure/_string.h
new file mode 100644 (file)
index 0000000..d85d91d
--- /dev/null
+++ b/include/secure/_string.h
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2007 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef _STRING_H_
+# error "Never use <secure/_string.h> directly; include <string.h> instead."
+#endif
+
+#ifndef _SECURE__STRING_H_
+#define _SECURE__STRING_H_
+
+#include <secure/_common.h>
+
+#if _USE_FORTIFY_LEVEL > 0
+
+/* memcpy, mempcpy, memmove, memset, strcpy, stpcpy, strncpy, strcat
+   and strncat */
+
+#undef memcpy
+#undef memmove
+#undef memset
+#undef strcpy
+#undef stpcpy
+#undef strncpy
+#undef strcat
+#undef strncat
+
+#define memcpy(dest, src, len)                                 \
+  ((__darwin_obsz0 (dest) != (size_t) -1)                              \
+   ? __builtin___memcpy_chk (dest, src, len, __darwin_obsz0 (dest))    \
+   : __inline_memcpy_chk (dest, src, len))
+
+static inline void *
+__inline_memcpy_chk (void *__dest, const void *__src, size_t __len)
+{
+  return __builtin___memcpy_chk (__dest, __src, __len, __darwin_obsz0(__dest));
+}
+
+#define memmove(dest, src, len)                                        \
+  ((__darwin_obsz0 (dest) != (size_t) -1)                              \
+   ? __builtin___memmove_chk (dest, src, len, __darwin_obsz0 (dest))   \
+   : __inline_memmove_chk (dest, src, len))
+
+static inline void *
+__inline_memmove_chk (void *__dest, const void *__src, size_t __len)
+{
+  return __builtin___memmove_chk (__dest, __src, __len, __darwin_obsz0(__dest));
+}
+
+#define memset(dest, val, len)                                 \
+  ((__darwin_obsz0 (dest) != (size_t) -1)                              \
+   ? __builtin___memset_chk (dest, val, len, __darwin_obsz0 (dest))    \
+   : __inline_memset_chk (dest, val, len))
+
+static inline void *
+__inline_memset_chk (void *__dest, int __val, size_t __len)
+{
+  return __builtin___memset_chk (__dest, __val, __len, __darwin_obsz0(__dest));
+}
+
+#define strcpy(dest, src)                                      \
+  ((__darwin_obsz0 (dest) != (size_t) -1)                              \
+   ? __builtin___strcpy_chk (dest, src, __darwin_obsz (dest))          \
+   : __inline_strcpy_chk (dest, src))
+
+static inline char *
+__inline_strcpy_chk (char *__restrict __dest, const char *__restrict __src)
+{
+  return __builtin___strcpy_chk (__dest, __src, __darwin_obsz(__dest));
+}
+
+#define stpcpy(dest, src)                                      \
+  ((__darwin_obsz0 (dest) != (size_t) -1)                              \
+   ? __builtin___stpcpy_chk (dest, src, __darwin_obsz (dest))          \
+   : __inline_stpcpy_chk (dest, src))
+
+static inline char *
+__inline_stpcpy_chk (char *__dest, const char *__src)
+{
+  return __builtin___stpcpy_chk (__dest, __src, __darwin_obsz(__dest));
+}
+
+#define strncpy(dest, src, len)                                        \
+  ((__darwin_obsz0 (dest) != (size_t) -1)                              \
+   ? __builtin___strncpy_chk (dest, src, len, __darwin_obsz (dest))    \
+   : __inline_strncpy_chk (dest, src, len))
+
+static inline char *
+__inline_strncpy_chk (char *__restrict __dest, const char *__restrict __src,
+                     size_t __len)
+{
+  return __builtin___strncpy_chk (__dest, __src, __len, __darwin_obsz(__dest));
+}
+
+#define strcat(dest, src)                                      \
+  ((__darwin_obsz0 (dest) != (size_t) -1)                              \
+   ? __builtin___strcat_chk (dest, src, __darwin_obsz (dest))          \
+   : __inline_strcat_chk (dest, src))
+
+static inline char *
+__inline_strcat_chk (char *__restrict __dest, const char *__restrict __src)
+{
+  return __builtin___strcat_chk (__dest, __src, __darwin_obsz(__dest));
+}
+
+#define strncat(dest, src, len)                                        \
+  ((__darwin_obsz0 (dest) != (size_t) -1)                              \
+   ? __builtin___strcat_chk (dest, src, __darwin_obsz (dest))          \
+   : __inline_strncat_chk (dest, src, len))
+
+static inline char *
+__inline_strncat_chk (char *__restrict __dest, const char *__restrict __src,
+                     size_t __len)
+{
+  return __builtin___strncat_chk (__dest, __src, __len, __darwin_obsz(__dest));
+}
+
+#endif
+#endif