libxc: move foreign memory functions to xc_foreign_memory.c

Now that this file exists it is a better home for these than xc_misc.c

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/tools/libxc/xc_foreign_memory.c b/tools/libxc/xc_foreign_memory.c
index 907c02bd7e..2c6d8d3952 100644
--- a/tools/libxc/xc_foreign_memory.c
+++ b/tools/libxc/xc_foreign_memory.c
@@ -20,6 +20,37 @@
 
 #include "xc_private.h"
 
+void *xc_map_foreign_pages(xc_interface *xch, uint32_t dom, int prot,
+                           const xen_pfn_t *arr, int num)
+{
+    void *res;
+    int i, *err;
+
+    if (num < 0) {
+        errno = -EINVAL;
+        return NULL;
+    }
+
+    err = malloc(num * sizeof(*err));
+    if (!err)
+        return NULL;
+
+    res = xc_map_foreign_bulk(xch, dom, prot, arr, err, num);
+    if (res) {
+        for (i = 0; i < num; i++) {
+            if (err[i]) {
+                errno = -err[i];
+                munmap(res, num * PAGE_SIZE);
+                res = NULL;
+                break;
+            }
+        }
+    }
+
+    free(err);
+    return res;
+}
+
 void *xc_map_foreign_range(xc_interface *xch, uint32_t dom,
                            int size, int prot, unsigned long mfn)
 {
@@ -49,6 +80,47 @@ void *xc_map_foreign_bulk(xc_interface *xch, uint32_t dom, int prot,
                                                 dom, prot, arr, err, num);
 }
 
+/* stub for all not yet converted OSes */
+void *xc_map_foreign_bulk_compat(xc_interface *xch, xc_osdep_handle h,
+                                 uint32_t dom, int prot,
+                                 const xen_pfn_t *arr, int *err, unsigned int num)
+{
+    xen_pfn_t *pfn;
+    unsigned int i;
+    void *ret;
+
+    if ((int)num <= 0) {
+        errno = EINVAL;
+        return NULL;
+    }
+
+    pfn = malloc(num * sizeof(*pfn));
+    if (!pfn) {
+        errno = ENOMEM;
+        return NULL;
+    }
+
+    memcpy(pfn, arr, num * sizeof(*arr));
+    ret = xc_map_foreign_batch(xch, dom, prot, pfn, num);
+
+    if (ret) {
+        for (i = 0; i < num; ++i)
+            switch (pfn[i] ^ arr[i]) {
+            case 0:
+                err[i] = 0;
+                break;
+            default:
+                err[i] = -EINVAL;
+                break;
+            }
+    } else
+        memset(err, 0, num * sizeof(*err));
+
+    free(pfn);
+
+    return ret;
+}
+
 /*
  * Local variables:
  * mode: C