libxc: break xc_get_physmem out into os-dependent files

NetBSD doesn't have sysconf(_SC_PHYS_PAGES).

Factor physmem() out into os-dependent files and rename it to
xc_get_physmem() so as not to pollute the namespace.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/tools/libxc/xc_netbsd.c b/tools/libxc/xc_netbsd.c
index 8c82e36645..76d80595e8 100644
--- a/tools/libxc/xc_netbsd.c
+++ b/tools/libxc/xc_netbsd.c
@@ -23,6 +23,9 @@
 #include <xen/sys/evtchn.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/sysctl.h>
 
 static xc_osdep_handle netbsd_privcmd_open(xc_interface *xch)
 {
@@ -351,6 +354,24 @@ void discard_file_cache(xc_interface *xch, int fd, int flush)
     errno = saved_errno;
 }
 
+uint64_t xc_get_physmem(void)
+{
+    int mib[2], rc;
+    size_t len;
+    uint64_t physmem;
+
+    mib[0] = CTL_HW;
+    mib[1] = HW_PHYSMEM64;
+    rc = sysctl(mib, 2, &physmem, &len, NULL, 0);
+
+    if (rc == -1) {
+        /* PERROR("%s: Failed to get hw.physmem64: %s\n", strerror(errno)); */
+        return 0;
+    }
+
+    return physmem;
+}
+
 static struct xc_osdep_ops *netbsd_osdep_init(xc_interface *xch, enum xc_osdep_type type)
 {
     switch ( type )