[Xen-changelog] Fix libxc warnings with gcc-4.1 and glibc-2.3.90.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 316fafc6d74392358e85abd60eda5c6dbb991794
# Parent  dfa7ba9c1296c232ceced197cee88f9d02237a68
Fix libxc warnings with gcc-4.1 and glibc-2.3.90.

Signed-off-by: Charles Coffing <ccoffing@xxxxxxxxxx>

diff -r dfa7ba9c1296 -r 316fafc6d743 tools/libxc/xc_core.c
--- a/tools/libxc/xc_core.c     Thu Mar  2 20:35:17 2006
+++ b/tools/libxc/xc_core.c     Thu Mar  2 20:36:03 2006
@@ -71,8 +71,12 @@
                                          (sizeof(vcpu_guest_context_t) * 
nr_vcpus) +
                                          (nr_pages * sizeof(unsigned long)));
 
-    write(dump_fd, &header, sizeof(struct xc_core_header));
-    write(dump_fd, &ctxt, sizeof(ctxt[0]) * nr_vcpus);
+    if (write(dump_fd, &header, sizeof(struct xc_core_header)) < 0 ||
+        write(dump_fd, &ctxt, sizeof(ctxt[0]) * nr_vcpus) < 0)
+    {
+        PERROR("write failed");
+        goto error_out;
+    }
 
     if ((page_array = malloc(nr_pages * sizeof(unsigned long))) == NULL) {
         printf("Could not allocate memory\n");
@@ -82,7 +86,11 @@
         printf("Could not get the page frame list\n");
         goto error_out;
     }
-    write(dump_fd, page_array, nr_pages * sizeof(unsigned long));
+    if (write(dump_fd, page_array, nr_pages * sizeof(unsigned long)) < 0)
+    {
+        PERROR("write failed");
+        goto error_out;
+    }
     lseek(dump_fd, header.xch_pages_offset, SEEK_SET);
     for (dump_mem = dump_mem_start, i = 0; i < nr_pages; i++) {
         copy_from_domain_page(xc_handle, domid, page_array, i, dump_mem);

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