libxc: Move xg_memalign() into a proper source file, so that it

definitely does not leak out of tools/libxc. Return to the
ioemu/osdep.c way of checking for posix_memalign() as this works on
Solaris.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/tools/libxc/xg_private.c b/tools/libxc/xg_private.c
index 37bc587477..02c0ff70a6 100644
--- a/tools/libxc/xg_private.c
+++ b/tools/libxc/xg_private.c
@@ -8,6 +8,8 @@
 #include <unistd.h>
 #include <zlib.h>
 #include <strings.h>
+#include <stdlib.h>
+#include <malloc.h>
 
 #include "xg_private.h"
 
@@ -198,6 +200,22 @@ __attribute__((weak))
     return -1;
 }
 
+void *xg_memalign(size_t alignment, size_t size)
+{
+#if defined(_POSIX_C_SOURCE) && !defined(__sun__)
+    int ret;
+    void *ptr;
+    ret = posix_memalign(&ptr, alignment, size);
+    if (ret != 0)
+        return NULL;
+    return ptr;
+#elif defined(_BSD)
+    return valloc(size);
+#else
+    return memalign(alignment, size);
+#endif
+}
+
 /*
  * Local variables:
  * mode: C