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-rw-r--r--lib/sanitizer_common/sanitizer_platform_limits_linux.cpp108
1 files changed, 108 insertions, 0 deletions
diff --git a/lib/sanitizer_common/sanitizer_platform_limits_linux.cpp b/lib/sanitizer_common/sanitizer_platform_limits_linux.cpp
new file mode 100644
index 000000000000..842bc789f479
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+++ b/lib/sanitizer_common/sanitizer_platform_limits_linux.cpp
@@ -0,0 +1,108 @@
+//===-- sanitizer_platform_limits_linux.cpp -------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of Sanitizer common code.
+//
+// Sizes and layouts of linux kernel data structures.
+//===----------------------------------------------------------------------===//
+
+// This is a separate compilation unit for linux headers that conflict with
+// userspace headers.
+// Most "normal" includes go in sanitizer_platform_limits_posix.cpp
+
+#include "sanitizer_platform.h"
+#if SANITIZER_LINUX
+
+#include "sanitizer_internal_defs.h"
+#include "sanitizer_platform_limits_posix.h"
+
+// For offsetof -> __builtin_offsetof definition.
+#include <stddef.h>
+
+// With old kernels (and even new kernels on powerpc) asm/stat.h uses types that
+// are not defined anywhere in userspace headers. Fake them. This seems to work
+// fine with newer headers, too.
+#include <linux/posix_types.h>
+#if defined(__x86_64__) || defined(__mips__)
+#include <sys/stat.h>
+#else
+#define ino_t __kernel_ino_t
+#define mode_t __kernel_mode_t
+#define nlink_t __kernel_nlink_t
+#define uid_t __kernel_uid_t
+#define gid_t __kernel_gid_t
+#define off_t __kernel_off_t
+#define time_t __kernel_time_t
+// This header seems to contain the definitions of _kernel_ stat* structs.
+#include <asm/stat.h>
+#undef ino_t
+#undef mode_t
+#undef nlink_t
+#undef uid_t
+#undef gid_t
+#undef off_t
+#endif
+
+#include <linux/aio_abi.h>
+
+#if !SANITIZER_ANDROID
+#include <sys/statfs.h>
+#include <linux/perf_event.h>
+#endif
+
+using namespace __sanitizer;
+
+namespace __sanitizer {
+#if !SANITIZER_ANDROID
+ unsigned struct_statfs64_sz = sizeof(struct statfs64);
+#endif
+} // namespace __sanitizer
+
+#if !defined(__powerpc64__) && !defined(__x86_64__) && !defined(__aarch64__)\
+ && !defined(__mips__) && !defined(__s390__)\
+ && !defined(__sparc__)
+COMPILER_CHECK(struct___old_kernel_stat_sz == sizeof(struct __old_kernel_stat));
+#endif
+
+COMPILER_CHECK(struct_kernel_stat_sz == sizeof(struct stat));
+
+#if defined(__i386__)
+COMPILER_CHECK(struct_kernel_stat64_sz == sizeof(struct stat64));
+#endif
+
+CHECK_TYPE_SIZE(io_event);
+CHECK_SIZE_AND_OFFSET(io_event, data);
+CHECK_SIZE_AND_OFFSET(io_event, obj);
+CHECK_SIZE_AND_OFFSET(io_event, res);
+CHECK_SIZE_AND_OFFSET(io_event, res2);
+
+#if !SANITIZER_ANDROID
+COMPILER_CHECK(sizeof(struct __sanitizer_perf_event_attr) <=
+ sizeof(struct perf_event_attr));
+CHECK_SIZE_AND_OFFSET(perf_event_attr, type);
+CHECK_SIZE_AND_OFFSET(perf_event_attr, size);
+#endif
+
+COMPILER_CHECK(iocb_cmd_pread == IOCB_CMD_PREAD);
+COMPILER_CHECK(iocb_cmd_pwrite == IOCB_CMD_PWRITE);
+#if !SANITIZER_ANDROID
+COMPILER_CHECK(iocb_cmd_preadv == IOCB_CMD_PREADV);
+COMPILER_CHECK(iocb_cmd_pwritev == IOCB_CMD_PWRITEV);
+#endif
+
+CHECK_TYPE_SIZE(iocb);
+CHECK_SIZE_AND_OFFSET(iocb, aio_data);
+// Skip aio_key, it's weird.
+CHECK_SIZE_AND_OFFSET(iocb, aio_lio_opcode);
+CHECK_SIZE_AND_OFFSET(iocb, aio_reqprio);
+CHECK_SIZE_AND_OFFSET(iocb, aio_fildes);
+CHECK_SIZE_AND_OFFSET(iocb, aio_buf);
+CHECK_SIZE_AND_OFFSET(iocb, aio_nbytes);
+CHECK_SIZE_AND_OFFSET(iocb, aio_offset);
+
+#endif // SANITIZER_LINUX