[PATCH] Add check for totalram, mem_unit in struct sysinfo.

[Evgeny Litvinenko]

Signed-off-by: Evgeny Litvinenko <evgeny.v.litvinenko at gmail.com>

diff --git a/configure.ac b/configure.ac
index 4829648c3a..a2404aeb74 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2215,6 +2215,7 @@ AC_CHECK_FUNCS(\
 	strtold \
 	symlink \
 	sysinfo \
+	sysconf \
 	tcdrain \
 	thr_kill2 \
 	usleep
@@ -2662,6 +2663,12 @@ AC_CHECK_MEMBERS([struct ifreq.ifr_hwaddr],,,
 # include <net/if.h>
 #endif])
 
+dnl Check for struct sysinfo members totalram and mem_unit
+AC_CHECK_MEMBERS([struct sysinfo.totalram, struct sysinfo.mem_unit],,,
+[#ifdef HAVE_SYS_SYSINFO_H
+# include <sys/sysinfo.h>
+#endif])
+
 dnl Check for isfinite
 ac_save_LIBS="$LIBS"
 LIBS="$LIBS -lm"
diff --git a/dlls/ntdll/unix/virtual.c b/dlls/ntdll/unix/virtual.c
index d16259e5ae..0dd72e445f 100644
--- a/dlls/ntdll/unix/virtual.c
+++ b/dlls/ntdll/unix/virtual.c
@@ -43,6 +43,9 @@
 #ifdef HAVE_SYS_SYSINFO_H
 # include <sys/sysinfo.h>
 #endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
 #ifdef HAVE_VALGRIND_VALGRIND_H
 # include <valgrind/valgrind.h>
 #endif
@@ -2475,22 +2478,30 @@ ULONG_PTR get_system_affinity_mask(void)
  */
 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
 {
-#ifdef HAVE_SYSINFO
+#if defined(HAVE_STRUCT_SYSINFO_TOTALRAM) && defined(HAVE_STRUCT_SYSINFO_MEM_UNIT)
     struct sysinfo sinfo;
+#elif defined(HAVE_SYSCONF) && defined(_SC_PHYS_PAGES)
+    LONG64 phys_pages;
 #endif
 
     info->unknown                 = 0;
     info->KeMaximumIncrement      = 0;  /* FIXME */
     info->PageSize                = page_size;
     info->MmLowestPhysicalPage    = 1;
-    info->MmHighestPhysicalPage   = 0x7fffffff / page_size;
-#ifdef HAVE_SYSINFO
+
+#if defined(HAVE_STRUCT_SYSINFO_TOTALRAM) && defined(HAVE_STRUCT_SYSINFO_MEM_UNIT)
     if (!sysinfo(&sinfo))
     {
         ULONG64 total = (ULONG64)sinfo.totalram * sinfo.mem_unit;
         info->MmHighestPhysicalPage = max(1, total / page_size);
     }
+#elif defined(HAVE_SYSCONF) && defined(_SC_PHYS_PAGES)
+    phys_pages = sysconf( _SC_PHYS_PAGES );
+    info->MmHighestPhysicalPage = max(1, phys_pages);
+#else
+    info->MmHighestPhysicalPage = 0x7fffffff / page_size;
 #endif
+
     info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
     info->AllocationGranularity   = granularity_mask + 1;
     info->LowestUserAddress       = (void *)0x10000;
-- 
2.25.4