commit 74bc41511af5c389cd9f37956bd6e7fd7de35c49
author Roger Pau Monne <roger.pau@citrix.com> Fri May 23 17:57:47 2014 +0200
committer Stefano Stabellini <stefano.stabellini@eu.citrix.com> Fri Aug 01 15:57:28 2014 +0000
tree 3ac3141be2dad8be31e92eb75dce281cdd5a314f
parent 541bbb07eb197a870661ed702ae1f15c7d46aea6

xen: fix usage of ENODATA

ENODATA doesn't exist on FreeBSD, so ENODATA errors returned by the
hypervisor are translated to ENOENT.

Also, the error code is returned in errno if the call returns -1, so
compare the error code with the value in errno instead of the value
returned by the function.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Anthony Perard <anthony.perard@citrix.com>

xen-hvm.c

diff --git a/xen-hvm.c b/xen-hvm.c
index a2486cf..91de2e2 100644
--- a/xen-hvm.c
+++ b/xen-hvm.c
@@ -513,11 +513,14 @@
                                  start_addr >> TARGET_PAGE_BITS, npages,
                                  bitmap);
     if (rc < 0) {
-        if (rc != -ENODATA) {
+#ifndef ENODATA
+#define ENODATA  ENOENT
+#endif
+        if (errno == ENODATA) {
             memory_region_set_dirty(framebuffer, 0, size);
             DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
                     ", 0x" TARGET_FMT_plx "): %s\n",
-                    start_addr, start_addr + size, strerror(-rc));
+                    start_addr, start_addr + size, strerror(errno));
         }
         return;
     }