[PATCH v9 09/11] tools/libxenforeignmemory: reduce xenforeignmemory_restrict code footprint

[Paul Durrant <paul.durrant@citrix.com>]

By using a static inline stub in private.h for OS where this functionality
is not implemented, the various duplicate stubs in the OS-specific source
modules can be avoided.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
---
Cc: Ian Jackson <ian.jackson@eu.citrix.com>

v4:
 - Removed extraneous freebsd code.

v3:
 - Patch added in response to review comments.
---
 tools/libs/foreignmemory/freebsd.c |  7 -------
 tools/libs/foreignmemory/minios.c  |  7 -------
 tools/libs/foreignmemory/netbsd.c  |  7 -------
 tools/libs/foreignmemory/private.h | 12 +++++++++---
 tools/libs/foreignmemory/solaris.c |  7 -------
 5 files changed, 9 insertions(+), 31 deletions(-)

diff --git a/tools/libs/foreignmemory/freebsd.c b/tools/libs/foreignmemory/freebsd.c
index dec447485a..6e6bc4b11f 100644
--- a/tools/libs/foreignmemory/freebsd.c
+++ b/tools/libs/foreignmemory/freebsd.c
@@ -95,13 +95,6 @@ int osdep_xenforeignmemory_unmap(xenforeignmemory_handle *fmem,
     return munmap(addr, num << PAGE_SHIFT);
 }
 
-int osdep_xenforeignmemory_restrict(xenforeignmemory_handle *fmem,
-                                    domid_t domid)
-{
-    errno = -EOPNOTSUPP;
-    return -1;
-}
-
 /*
  * Local variables:
  * mode: C
diff --git a/tools/libs/foreignmemory/minios.c b/tools/libs/foreignmemory/minios.c
index 75f340122e..43341ca301 100644
--- a/tools/libs/foreignmemory/minios.c
+++ b/tools/libs/foreignmemory/minios.c
@@ -58,13 +58,6 @@ int osdep_xenforeignmemory_unmap(xenforeignmemory_handle *fmem,
     return munmap(addr, num << PAGE_SHIFT);
 }
 
-int osdep_xenforeignmemory_restrict(xenforeignmemory_handle *fmem,
-                                    domid_t domid)
-{
-    errno = -EOPNOTSUPP;
-    return -1;
-}
-
 /*
  * Local variables:
  * mode: C
diff --git a/tools/libs/foreignmemory/netbsd.c b/tools/libs/foreignmemory/netbsd.c
index 9bf95ef4f0..54a418ebd6 100644
--- a/tools/libs/foreignmemory/netbsd.c
+++ b/tools/libs/foreignmemory/netbsd.c
@@ -100,13 +100,6 @@ int osdep_xenforeignmemory_unmap(xenforeignmemory_handle *fmem,
     return munmap(addr, num*XC_PAGE_SIZE);
 }
 
-int osdep_xenforeignmemory_restrict(xenforeignmemory_handle *fmem,
-                                    domid_t domid)
-{
-    errno = -EOPNOTSUPP;
-    return -1;
-}
-
 /*
  * Local variables:
  * mode: C
diff --git a/tools/libs/foreignmemory/private.h b/tools/libs/foreignmemory/private.h
index 80b22bdbfc..b5d5f0a354 100644
--- a/tools/libs/foreignmemory/private.h
+++ b/tools/libs/foreignmemory/private.h
@@ -32,9 +32,6 @@ void *osdep_xenforeignmemory_map(xenforeignmemory_handle *fmem,
 int osdep_xenforeignmemory_unmap(xenforeignmemory_handle *fmem,
                                  void *addr, size_t num);
 
-int osdep_xenforeignmemory_restrict(xenforeignmemory_handle *fmem,
-                                    domid_t domid);
-
 #if defined(__NetBSD__) || defined(__sun__)
 /* Strictly compat for those two only only */
 void *compat_mapforeign_batch(xenforeignmem_handle *fmem, uint32_t dom,
@@ -54,6 +51,13 @@ struct xenforeignmemory_resource_handle {
 };
 
 #ifndef __linux__
+static inline int osdep_xenforeignmemory_restrict(xenforeignmemory_handle *fmem,
+                                                  domid_t domid)
+{
+    errno = EOPNOTSUPP;
+    return -1;
+}
+
 static inline int osdep_xenforeignmemory_map_resource(
     xenforeignmemory_handle *fmem, xenforeignmemory_resource_handle *fres)
 {
@@ -67,6 +71,8 @@ static inline int osdep_xenforeignmemory_unmap_resource(
     return 0;
 }
 #else
+int osdep_xenforeignmemory_restrict(xenforeignmemory_handle *fmem,
+                                    domid_t domid);
 int osdep_xenforeignmemory_map_resource(
     xenforeignmemory_handle *fmem, xenforeignmemory_resource_handle *fres);
 int osdep_xenforeignmemory_unmap_resource(
diff --git a/tools/libs/foreignmemory/solaris.c b/tools/libs/foreignmemory/solaris.c
index a33decb4ae..ee8aae4fbd 100644
--- a/tools/libs/foreignmemory/solaris.c
+++ b/tools/libs/foreignmemory/solaris.c
@@ -97,13 +97,6 @@ int osdep_xenforeignmemory_unmap(xenforeignmemory_handle *fmem,
     return munmap(addr, num*XC_PAGE_SIZE);
 }
 
-int osdep_xenforeignmemory_restrict(xenforeignmemory_handle *fmem,
-                                    domid_t domid)
-{
-    errno = -EOPNOTSUPP;
-    return -1;
-}
-
 /*
  * Local variables:
  * mode: C
-- 
2.11.0


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