[PATCH v8 01/11] libxl: make libxl_device_disk_local_attach/detach internal functions

[Stefano Stabellini <stefano.stabellini@eu.citrix.com>]

Changes in v8:
- keep libxl__device_disk_local_attach/detach in libxl.c.

Changes in v5:

- remove _hidden from the implementation.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
 tools/libxl/libxl.c            |   11 +++--------
 tools/libxl/libxl.h            |    7 -------
 tools/libxl/libxl_bootloader.c |    4 ++--
 tools/libxl/libxl_internal.h   |    9 +++++++++
 4 files changed, 14 insertions(+), 17 deletions(-)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index e3d05c2..cd870c4 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -1735,9 +1735,9 @@ out:
     return ret;
 }
 
-char * libxl_device_disk_local_attach(libxl_ctx *ctx, libxl_device_disk *disk)
+char * libxl__device_disk_local_attach(libxl__gc *gc, libxl_device_disk *disk)
 {
-    GC_INIT(ctx);
+    libxl_ctx *ctx = gc->owner;
     char *dev = NULL;
     char *ret = NULL;
     int rc;
@@ -1792,11 +1792,10 @@ char * libxl_device_disk_local_attach(libxl_ctx *ctx, libxl_device_disk *disk)
  out:
     if (dev != NULL)
         ret = strdup(dev);
-    GC_FREE;
     return ret;
 }
 
-int libxl_device_disk_local_detach(libxl_ctx *ctx, libxl_device_disk *disk)
+int libxl__device_disk_local_detach(libxl__gc *gc, libxl_device_disk *disk)
 {
     /* Nothing to do for PHYSTYPE_PHY. */
 
@@ -1804,10 +1803,6 @@ int libxl_device_disk_local_detach(libxl_ctx *ctx, libxl_device_disk *disk)
      * For other device types assume that the blktap2 process is
      * needed by the soon to be started domain and do nothing.
      */
-    /*
-     * FIXME
-     * This appears to leak the disk in failure paths
-     */
 
     return 0;
 }
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index 316d290..21e6510 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -686,13 +686,6 @@ int libxl_device_disk_getinfo(libxl_ctx *ctx, uint32_t domid,
  */
 int libxl_cdrom_insert(libxl_ctx *ctx, uint32_t domid, libxl_device_disk *disk);
 
-/*
- * Make a disk available in this (the control) domain. Returns path to
- * a device.
- */
-char * libxl_device_disk_local_attach(libxl_ctx *ctx, libxl_device_disk *disk);
-int libxl_device_disk_local_detach(libxl_ctx *ctx, libxl_device_disk *disk);
-
 /* Network Interfaces */
 int libxl_device_nic_add(libxl_ctx *ctx, uint32_t domid, libxl_device_nic *nic);
 int libxl_device_nic_remove(libxl_ctx *ctx, uint32_t domid,
diff --git a/tools/libxl/libxl_bootloader.c b/tools/libxl/libxl_bootloader.c
index f3a590b..e8950b1 100644
--- a/tools/libxl/libxl_bootloader.c
+++ b/tools/libxl/libxl_bootloader.c
@@ -228,7 +228,7 @@ static void bootloader_cleanup(libxl__egc *egc, libxl__bootloader_state *bl)
     if (bl->outputdir) libxl__remove_directory(gc, bl->outputdir);
 
     if (bl->diskpath) {
-        libxl_device_disk_local_detach(CTX, bl->disk);
+        libxl__device_disk_local_detach(gc, bl->disk);
         free(bl->diskpath);
         bl->diskpath = 0;
     }
@@ -330,7 +330,7 @@ void libxl__bootloader_run(libxl__egc *egc, libxl__bootloader_state *bl)
         goto out;
     }
 
-    bl->diskpath = libxl_device_disk_local_attach(CTX, bl->disk);
+    bl->diskpath = libxl__device_disk_local_attach(gc, bl->disk);
     if (!bl->diskpath) {
         rc = ERROR_FAIL;
         goto out;
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 52f5435..d34e561 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -1260,6 +1260,15 @@ _hidden char *libxl__blktap_devpath(libxl__gc *gc,
  */
 _hidden void libxl__device_destroy_tapdisk(libxl__gc *gc, char *be_path);
 
+/*
+ * Make a disk available in this (the control) domain. Returns path to
+ * a device.
+ */
+_hidden char * libxl__device_disk_local_attach(libxl__gc *gc,
+        libxl_device_disk *disk);
+_hidden int libxl__device_disk_local_detach(libxl__gc *gc,
+        libxl_device_disk *disk);
+
 _hidden char *libxl__uuid2string(libxl__gc *gc, const libxl_uuid uuid);
 
 struct libxl__xen_console_reader {
-- 
1.7.2.5