From: Rhys Kidd <rhyskidd@gmail.com>
Date: Wed, 1 Apr 2015 12:15:49 +0000 (+0000)
Subject: Fix Darwin: -v does not show kernel version
X-Git-Tag: svn/VALGRIND_3_11_0~536
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=537b3dfeeb59c91ed464f3240d0b21d3e6fafec1;p=thirdparty%2Fvalgrind.git

Fix Darwin: -v does not show kernel version
bz#201435

Before:

== 590 tests, 237 stderr failures, 22 stdout failures, 0 stderrB failures, 0 stdoutB failures, 31 post failures ==

After:

== 590 tests, 237 stderr failures, 22 stdout failures, 0 stderrB failures, 0 stdoutB failures, 31 post failures ==


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15056
---

diff --git a/NEWS b/NEWS
index 4d71003014..657fa9da50 100644
--- a/NEWS
+++ b/NEWS
@@ -62,6 +62,7 @@ where XXXXXX is the bug number as listed below.
 116002  VG_(printf): Problems with justification of strings and integers
 155125  avoid cutting away file:lineno after long function name
 197259  Unsupported arch_prtctl PR_SET_GS option
+201435  Fix Darwin: -v does not show kernel version
 211926  Avoid compilation warnings in valgrind.h with -pedantic
 226609  Crediting upstream authors in man page
 269360  s390x: Fix addressing mode selection for compare-and-swap
diff --git a/coregrind/m_libcproc.c b/coregrind/m_libcproc.c
index f69d74084a..f3f40704cc 100644
--- a/coregrind/m_libcproc.c
+++ b/coregrind/m_libcproc.c
@@ -387,6 +387,18 @@ Int VG_(system) ( const HChar* cmd )
    }
 }
 
+Int VG_(sysctl)(Int *name, UInt namelen, void *oldp, SizeT *oldlenp, void *newp, SizeT newlen)
+{
+   SysRes res;
+#  if defined(VGO_darwin)
+   res = VG_(do_syscall6)(__NR___sysctl,
+                           name, namelen, oldp, oldlenp, newp, newlen);
+#  else
+   res = VG_(mk_SysRes_Error)(VKI_ENOSYS);
+#  endif
+   return sr_isError(res) ? -1 : sr_Res(res);
+}
+
 /* ---------------------------------------------------------------------
    Resource limits
    ------------------------------------------------------------------ */
diff --git a/coregrind/m_main.c b/coregrind/m_main.c
index 365bb8212e..732e60e14a 100644
--- a/coregrind/m_main.c
+++ b/coregrind/m_main.c
@@ -1444,7 +1444,9 @@ static void print_preamble ( Bool logging_to_fd,
       VG_(umsg)("\n");
 
    if (VG_(clo_verbosity) > 1) {
+# if !defined(VGO_darwin)
       SysRes fd;
+# endif
       VexArch vex_arch;
       VexArchInfo vex_archinfo;
       if (!logging_to_fd)
@@ -1456,6 +1458,7 @@ static void print_preamble ( Bool logging_to_fd,
                      * (HChar**) VG_(indexXA)( VG_(args_for_valgrind), i ));
       }
 
+# if !defined(VGO_darwin)
       VG_(message)(Vg_DebugMsg, "Contents of /proc/version:\n");
       fd = VG_(open) ( "/proc/version", VKI_O_RDONLY, 0 );
       if (sr_isError(fd)) {
@@ -1477,6 +1480,18 @@ static void print_preamble ( Bool logging_to_fd,
          VG_(message)(Vg_DebugMsg, "\n");
          VG_(close)(fdno);
       }
+# else
+      VG_(message)(Vg_DebugMsg, "Output from sysctl({CTL_KERN,KERN_VERSION}):\n");
+      /* Note: preferable to use sysctlbyname("kern.version", kernelVersion, &len, NULL, 0)
+         however that syscall is OS X 10.10+ only. */
+      Int mib[] = {CTL_KERN, KERN_VERSION};
+      SizeT len;
+      VG_(sysctl)(mib, sizeof(mib)/sizeof(Int), NULL, &len, NULL, 0);
+      HChar *kernelVersion = VG_(malloc)("main.pp.1", len);
+      VG_(sysctl)(mib, sizeof(mib)/sizeof(Int), kernelVersion, &len, NULL, 0);
+      VG_(message)(Vg_DebugMsg, "  %s\n", kernelVersion);
+      VG_(free)( kernelVersion );
+# endif
 
       VG_(machine_get_VexArchInfo)( &vex_arch, &vex_archinfo );
       VG_(message)(
diff --git a/include/pub_tool_libcproc.h b/include/pub_tool_libcproc.h
index cbd159f133..0e2afdccfa 100644
--- a/include/pub_tool_libcproc.h
+++ b/include/pub_tool_libcproc.h
@@ -59,6 +59,7 @@ extern Int  VG_(waitpid)( Int pid, Int *status, Int options );
 extern Int  VG_(system) ( const HChar* cmd );
 extern Int  VG_(fork)   ( void);
 extern void VG_(execv)  ( const HChar* filename, HChar** argv );
+extern Int  VG_(sysctl) ( Int *name, UInt namelen, void *oldp, SizeT *oldlenp, void *newp, SizeT newlen );
 
 /* ---------------------------------------------------------------------
    Resource limits and capabilities