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[Xen-devel] [PATCH 1/2] 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 Monnà <roger.pau@xxxxxxxxxx>
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Cc: Anthony Perard <anthony.perard@xxxxxxxxxx>
---
 xen-all.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/xen-all.c b/xen-all.c
index 0b4d934..4026b7b 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -499,11 +499,15 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
                                  start_addr >> TARGET_PAGE_BITS, npages,
                                  bitmap);
     if (rc < 0) {
-        if (rc != -ENODATA) {
+#ifdef ENODATA
+        if (errno == ENODATA) {
+#else
+        if (errno == ENOENT) {
+#endif
             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;
     }
-- 
1.7.7.5 (Apple Git-26)


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