libsanitizer: Use pre-computed size of struct ustat for Linux

Cherry-pick compiler-rt revision 333213:

<sys/ustat.h> has been removed from glibc 2.28 by:

commit cf2478d53ad7071e84c724a986b56fe17f4f4ca7
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Sun Mar 18 11:28:59 2018 +0800

    Deprecate ustat syscall interface

This patch uses pre-computed size of struct ustat for Linux.

	PR sanitizer/85835
	* sanitizer_common/sanitizer_platform_limits_posix.cc: Don't
	include <sys/ustat.h> for Linux.
	(SIZEOF_STRUCT_USTAT): New.
	(struct_ustat_sz): Use SIZEOF_STRUCT_USTAT for Linux.

From-SVN: r260688

diff --git a/libsanitizer/ChangeLog b/libsanitizer/ChangeLog
index 07096babbdad54e35e4987bdaeea84e89e2cc889..d472d15324b33e9add5a891485221bbc1861b070 100644 (file)
--- a/libsanitizer/ChangeLog
+++ b/libsanitizer/ChangeLog
@@ -1,3 +1,11 @@
+2018-05-24  H.J. Lu  <hongjiu.lu@intel.com>
+
+       PR sanitizer/85835
+       * sanitizer_common/sanitizer_platform_limits_posix.cc: Don't
+       include <sys/ustat.h> for Linux.
+       (SIZEOF_STRUCT_USTAT): New.
+       (struct_ustat_sz): Use SIZEOF_STRUCT_USTAT for Linux.
+
 2018-04-24  Martin Liska  <mliska@suse.cz>
 
        Backport from mainline

diff --git a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
index 31a5e697eae31b92e742a29ca35c12b5fcb7e021..8017afd21c53db55c3a9bc8e0e4f229d1729e949 100644 (file)
--- a/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
+++ b/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
@@ -154,7 +154,6 @@ typedef struct user_fpregs elf_fpregset_t;
 # include <sys/procfs.h>
 #endif
 #include <sys/user.h>
-#include <sys/ustat.h>
 #include <linux/cyclades.h>
 #include <linux/if_eql.h>
 #include <linux/if_plip.h>
@@ -247,7 +246,19 @@ namespace __sanitizer {
 #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
 
 #if SANITIZER_LINUX && !SANITIZER_ANDROID
-  unsigned struct_ustat_sz = sizeof(struct ustat);
+  // Use pre-computed size of struct ustat to avoid <sys/ustat.h> which
+  // has been removed from glibc 2.28.
+#if defined(__aarch64__) || defined(__s390x__) || defined (__mips64) \
+  || defined(__powerpc64__) || defined(__arch64__) || defined(__sparcv9) \
+  || defined(__x86_64__)
+#define SIZEOF_STRUCT_USTAT 32
+#elif defined(__arm__) || defined(__i386__) || defined(__mips__) \
+  || defined(__powerpc__) || defined(__s390__)
+#define SIZEOF_STRUCT_USTAT 20
+#else
+#error Unknown size of struct ustat
+#endif
+  unsigned struct_ustat_sz = SIZEOF_STRUCT_USTAT;
   unsigned struct_rlimit64_sz = sizeof(struct rlimit64);
   unsigned struct_statvfs64_sz = sizeof(struct statvfs64);
 #endif // SANITIZER_LINUX && !SANITIZER_ANDROID