[compiler-rt] eventfd api interception on freebsd. (llvm#76564)

Author: devnexen

compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc

@@ -6785,7 +6785,7 @@ INTERCEPTOR(SSIZE_T, sendto, int fd, void *buf, SIZE_T len, int flags,
 #endif
 
 #if SANITIZER_INTERCEPT_EVENTFD_READ_WRITE
-INTERCEPTOR(int, eventfd_read, int fd, u64 *value) {
+INTERCEPTOR(int, eventfd_read, int fd, __sanitizer_eventfd_t *value) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, eventfd_read, fd, value);
   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
@@ -6796,7 +6796,7 @@ INTERCEPTOR(int, eventfd_read, int fd, u64 *value) {
   }
   return res;
 }
-INTERCEPTOR(int, eventfd_write, int fd, u64 value) {
+INTERCEPTOR(int, eventfd_write, int fd, __sanitizer_eventfd_t value) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, eventfd_write, fd, value);
   if (fd >= 0) {

compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h

@@ -463,7 +463,7 @@
   (SI_LINUX || SI_MAC || SI_WINDOWS || SI_FREEBSD || SI_NETBSD || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_RECV_RECVFROM SI_POSIX
 #define SANITIZER_INTERCEPT_SEND_SENDTO SI_POSIX
-#define SANITIZER_INTERCEPT_EVENTFD_READ_WRITE SI_LINUX
+#define SANITIZER_INTERCEPT_EVENTFD_READ_WRITE (SI_LINUX || SI_FREEBSD)
 
 #define SI_STAT_LINUX (SI_LINUX && __GLIBC_PREREQ(2, 33))
 #define SANITIZER_INTERCEPT_STAT                                        \

compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_freebsd.h

@@ -726,6 +726,8 @@ struct __sanitizer_cpuset {
 
 typedef struct __sanitizer_cpuset __sanitizer_cpuset_t;
 extern unsigned struct_cpuset_sz;
+
+typedef unsigned long long __sanitizer_eventfd_t;
 }  // namespace __sanitizer
 
 #  define CHECK_TYPE_SIZE(TYPE) \

compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h

@@ -938,6 +938,8 @@ struct __sanitizer_cookie_io_functions_t {
   __sanitizer_cookie_io_seek seek;
   __sanitizer_cookie_io_close close;
 };
+
+typedef unsigned long long __sanitizer_eventfd_t;
 #endif
 
 #define IOC_NRBITS 8

compiler-rt/test/msan/Linux/eventfd.cpp renamed to compiler-rt/test/msan/eventfd.cpp

@@ -1,4 +1,7 @@
-// RUN: %clangxx_msan -O0 %s -o %t && %run %t 2>&1
+/* RUN: %clangxx_msan -O0 %s -o %t && %run %t 2>&1
+
+   REQUIRES: target={{.*(linux|freebsd).*}}
+*/
 
 #include <assert.h>
 #include <sys/eventfd.h>