Merge "Move the FORTIFY_SOURCE helpers over to .cpp."

libc/Android.mk

@@ -178,7 +178,7 @@ libc_common_src_files := \
 	bionic/eventfd.c \
 	bionic/fcntl.c \
 	bionic/fdprintf.c \
-	bionic/__fgets_chk.c \
+	bionic/__fgets_chk.cpp \
 	bionic/flockfile.c \
 	bionic/fork.c \
 	bionic/fstatfs.c \
@@ -205,12 +205,12 @@ libc_common_src_files := \
 	bionic/md5.c \
 	bionic/memccpy.c \
 	bionic/memchr.c \
-	bionic/__memcpy_chk.c \
+	bionic/__memcpy_chk.cpp \
 	bionic/memmem.c \
-	bionic/__memmove_chk.c \
+	bionic/__memmove_chk.cpp \
 	bionic/memmove_words.c \
 	bionic/memrchr.c \
-	bionic/__memset_chk.c \
+	bionic/__memset_chk.cpp \
 	bionic/memswap.c \
 	bionic/mmap.c \
 	bionic/openat.c \
@@ -252,19 +252,17 @@ libc_common_src_files := \
 	bionic/sigsuspend.c \
 	bionic/sigwait.c \
 	bionic/sleep.c \
-	bionic/__snprintf_chk.c \
-	bionic/__sprintf_chk.c \
 	bionic/statfs.c \
-	bionic/__strcat_chk.c \
+	bionic/__strcat_chk.cpp \
 	bionic/strcoll.c \
-	bionic/__strcpy_chk.c \
+	bionic/__strcpy_chk.cpp \
 	bionic/strerror.cpp \
 	bionic/strerror_r.cpp \
-	bionic/__strlcat_chk.c \
-	bionic/__strlcpy_chk.c \
-	bionic/__strlen_chk.c \
-	bionic/__strncat_chk.c \
-	bionic/__strncpy_chk.c \
+	bionic/__strlcat_chk.cpp \
+	bionic/__strlcpy_chk.cpp \
+	bionic/__strlen_chk.cpp \
+	bionic/__strncat_chk.cpp \
+	bionic/__strncpy_chk.cpp \
 	bionic/strndup.c \
 	bionic/strnlen.c \
 	bionic/strntoimax.c \
@@ -279,14 +277,14 @@ libc_common_src_files := \
 	bionic/thread_atexit.c \
 	bionic/time64.c \
 	bionic/tmpfile.cpp \
-	bionic/__umask_chk.c \
+	bionic/__umask_chk.cpp \
 	bionic/umount.c \
 	bionic/unlockpt.c \
 	bionic/usleep.c \
 	bionic/utime.c \
 	bionic/utmp.c \
-	bionic/__vsnprintf_chk.c \
-	bionic/__vsprintf_chk.c \
+	bionic/__vsnprintf_chk.cpp \
+	bionic/__vsprintf_chk.cpp \
 	bionic/wait.c \
 	bionic/wchar.c \
 	bionic/wcscoll.c \

libc/bionic/__fgets_chk.c → libc/bionic/__fgets_chk.cpp

@@ -41,7 +41,7 @@
  * This fgets check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-char *__fgets_chk(char *dest, int supplied_size,
+extern "C" char *__fgets_chk(char *dest, int supplied_size,
                   FILE *stream, size_t dest_len_from_compiler)
 {
     if (supplied_size < 0) {

libc/bionic/__memcpy_chk.c → libc/bionic/__memcpy_chk.cpp

@@ -42,7 +42,7 @@
  * This memcpy check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-void *__memcpy_chk(void *dest, const void *src,
+extern "C" void *__memcpy_chk(void *dest, const void *src,
               size_t copy_amount, size_t dest_len)
 {
     if (__builtin_expect(copy_amount > dest_len, 0)) {

libc/bionic/__memmove_chk.c → libc/bionic/__memmove_chk.cpp

@@ -41,7 +41,7 @@
  * This memmove check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-void *__memmove_chk (void *dest, const void *src,
+extern "C" void *__memmove_chk (void *dest, const void *src,
               size_t len, size_t dest_len)
 {
     if (len > dest_len) {

libc/bionic/__memset_chk.c → libc/bionic/__memset_chk.cpp

@@ -41,8 +41,7 @@
  * This memset check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-void *__memset_chk (void *dest, int c, size_t n, size_t dest_len)
-{
+extern "C" void *__memset_chk (void *dest, int c, size_t n, size_t dest_len) {
     if (n > dest_len) {
         __libc_android_log_print(ANDROID_LOG_FATAL, "libc",
             "*** memset buffer overflow detected ***\n");

libc/bionic/__strcat_chk.c → libc/bionic/__strcat_chk.cpp

@@ -42,8 +42,7 @@
  * This strcat check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-char *__strcat_chk (char *dest, const char *src, size_t dest_buf_size)
-{
+extern "C" char *__strcat_chk (char *dest, const char *src, size_t dest_buf_size) {
     // TODO: optimize so we don't scan src/dest twice.
     size_t src_len  = strlen(src);
     size_t dest_len = strlen(dest);

libc/bionic/__strcpy_chk.c → libc/bionic/__strcpy_chk.cpp

@@ -41,8 +41,7 @@
  * This strcpy check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-char *__strcpy_chk (char *dest, const char *src, size_t dest_len)
-{
+extern "C" char *__strcpy_chk (char *dest, const char *src, size_t dest_len) {
     // TODO: optimize so we don't scan src twice.
     size_t src_len = strlen(src) + 1;
     if (src_len > dest_len) {

libc/bionic/__strlcat_chk.c → libc/bionic/__strlcat_chk.cpp

@@ -42,7 +42,7 @@
  * This strlcat check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-size_t __strlcat_chk(char *dest, const char *src,
+extern "C" size_t __strlcat_chk(char *dest, const char *src,
               size_t supplied_size, size_t dest_len_from_compiler)
 {
     if (supplied_size > dest_len_from_compiler) {

libc/bionic/__strlcpy_chk.c → libc/bionic/__strlcpy_chk.cpp

@@ -42,7 +42,7 @@
  * This strlcpy check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-size_t __strlcpy_chk(char *dest, const char *src,
+extern "C" size_t __strlcpy_chk(char *dest, const char *src,
               size_t supplied_size, size_t dest_len_from_compiler)
 {
     if (supplied_size > dest_len_from_compiler) {

libc/bionic/__strlen_chk.c → libc/bionic/__strlen_chk.cpp

@@ -53,8 +53,7 @@
  *
  * or anytime strlen reads beyond an object boundary.
  */
-size_t __strlen_chk(const char *s, size_t s_len)
-{
+extern "C" size_t __strlen_chk(const char *s, size_t s_len) {
     size_t ret = strlen(s);
 
     if (__builtin_expect(ret >= s_len, 0)) {

libc/bionic/__strncat_chk.c → libc/bionic/__strncat_chk.cpp

@@ -42,7 +42,7 @@
  * This strncat check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-char *__strncat_chk (char *dest, const char *src,
+extern "C" char *__strncat_chk (char *dest, const char *src,
               size_t len, size_t dest_buf_size)
 {
     // TODO: optimize so we don't scan src/dest twice.

libc/bionic/__strncpy_chk.c → libc/bionic/__strncpy_chk.cpp

@@ -41,7 +41,7 @@
  * This strncpy check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-char *__strncpy_chk (char *dest, const char *src,
+extern "C" char *__strncpy_chk (char *dest, const char *src,
               size_t len, size_t dest_len)
 {
     if (len > dest_len) {

libc/bionic/__umask_chk.c → libc/bionic/__umask_chk.cpp

@@ -41,8 +41,7 @@
  * This umask check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-mode_t __umask_chk(mode_t mode)
-{
+extern "C" mode_t __umask_chk(mode_t mode) {
     if ((mode & 0777) != mode) {
         __libc_android_log_print(ANDROID_LOG_FATAL, "libc",
             "*** FORTIFY_SOURCE: umask called with invalid mask ***\n");

libc/bionic/__vsnprintf_chk.c → libc/bionic/__vsnprintf_chk.cpp

@@ -42,10 +42,10 @@
  * This vsnprintf check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-int __vsnprintf_chk(
+extern "C" int __vsnprintf_chk(
         char *dest,
         size_t supplied_size,
-        int flags,
+        int /*flags*/,
         size_t dest_len_from_compiler,
         const char *format,
         va_list va)
@@ -58,3 +58,32 @@ int __vsnprintf_chk(
 
     return vsnprintf(dest, supplied_size, format, va);
 }
+
+/*
+ * Runtime implementation of __builtin____snprintf_chk.
+ *
+ * See
+ *   http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html
+ *   http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html
+ * for details.
+ *
+ * This snprintf check is called if _FORTIFY_SOURCE is defined and
+ * greater than 0.
+ */
+extern "C" int __snprintf_chk(
+        char *dest,
+        size_t supplied_size,
+        int flags,
+        size_t dest_len_from_compiler,
+        const char *format, ...)
+{
+    va_list va;
+    int retval;
+
+    va_start(va, format);
+    retval = __vsnprintf_chk(dest, supplied_size, flags,
+                             dest_len_from_compiler, format, va);
+    va_end(va);
+
+    return retval;
+}

libc/bionic/__vsprintf_chk.c → libc/bionic/__vsprintf_chk.cpp

@@ -42,9 +42,9 @@
  * This vsprintf check is called if _FORTIFY_SOURCE is defined and
  * greater than 0.
  */
-int __vsprintf_chk(
+extern "C" int __vsprintf_chk(
         char *dest,
-        int flags,
+        int /*flags*/,
         size_t dest_len_from_compiler,
         const char *format,
         va_list va)
@@ -59,3 +59,31 @@ int __vsprintf_chk(
 
     return ret;
 }
+
+/*
+ * Runtime implementation of __builtin____sprintf_chk.
+ *
+ * See
+ *   http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html
+ *   http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html
+ * for details.
+ *
+ * This sprintf check is called if _FORTIFY_SOURCE is defined and
+ * greater than 0.
+ */
+extern "C" int __sprintf_chk(
+        char *dest,
+        int flags,
+        size_t dest_len_from_compiler,
+        const char *format, ...)
+{
+    va_list va;
+    int retval;
+
+    va_start(va, format);
+    retval = __vsprintf_chk(dest, flags,
+                             dest_len_from_compiler, format, va);
+    va_end(va);
+
+    return retval;
+}