add functions for runtime checking of disk capabilities for embedded devices

SVN revision: 65358

legacy/eeze/ChangeLog

@@ -53,3 +53,7 @@
 
 2011-08-01  Mike Blumenkrantz (discomfitor/zmike)
         * added fix for battery/ac detection with very recent versions of udev
+
+2011-11-17  Mike Blumenkrantz (discomfitor/zmike)
+        * added eeze_disk_can_{mount,unmount,eject} to determine at runtime whether eeze
+          is capable of performing disk operations

legacy/eeze/configure.ac

@@ -116,20 +116,32 @@ if test "x$eeze_mount" = "xyes";then
   PKG_CHECK_MODULES([ECORE_CON], [ecore-con >= 1.1.0])
 
   if test "x$with_mount" = "xdetect";then
-    AC_PATH_PROG([with_mount], [mount], [no])
-    test "x$with_mount" = "xno" && AC_MSG_ERROR([mount binary could not be detected])
+    AC_PATH_PROG([with_mount], [mount], [])
+  fi
+  if test -z "$with_mount" ; then
+    AC_DEFINE_UNQUOTED([MOUNTABLE], [0], [whether mount is available])
+  else
+    AC_DEFINE_UNQUOTED([MOUNTABLE], [1], [whether mount is available])
   fi
   AC_DEFINE_UNQUOTED([EEZE_MOUNT_BIN], ["$with_mount"], [mount bin to use])
 
   if test "x$with_umount" = "xdetect";then
-    AC_PATH_PROG([with_umount], [umount], [no])
-    test "x$with_umount" = "xno" && AC_MSG_ERROR([umount binary could not be detected])
+    AC_PATH_PROG([with_umount], [umount], [])
+  fi
+  if test -z "$with_umount" ; then
+    AC_DEFINE_UNQUOTED([UNMOUNTABLE], [0], [whether umount is available])
+  else
+    AC_DEFINE_UNQUOTED([UNMOUNTABLE], [1], [whether umount is available])
   fi
   AC_DEFINE_UNQUOTED([EEZE_UNMOUNT_BIN], ["$with_umount"], [umount bin to use])
 
   if test "x$with_eject" = "xdetect";then
-    AC_PATH_PROG([with_eject], [eject], [no])
-    test "x$with_eject" = "xno" && AC_MSG_ERROR([eject binary could not be detected])
+    AC_PATH_PROG([with_eject], [eject], [])
+  fi
+  if test -z "$with_eject" ; then
+    AC_DEFINE_UNQUOTED([EJECTABLE], [0], [whether eject is available])
+  else
+    AC_DEFINE_UNQUOTED([EJECTABLE], [1], [whether eject is available])
   fi
   AC_DEFINE_UNQUOTED([EEZE_EJECT_BIN], ["$with_eject"], [eject bin to use])
 fi

legacy/eeze/src/lib/Eeze_Disk.h

@@ -87,6 +87,33 @@ struct _Eeze_Event_Disk_Error
  */
 EAPI void           eeze_disk_function(void);
 
+/**
+ * @brief Return whether mount support is available in eeze
+ *
+ * Use this function to determine whether your Eeze library was compiled with a mount
+ * binary available.
+ * @since 1.1
+ */
+EAPI Eina_Bool      eeze_disk_can_mount(void);
+
+/**
+ * @brief Return whether unmount support is available in eeze
+ *
+ * Use this function to determine whether your Eeze library was compiled with an unmount
+ * binary available.
+ * @since 1.1
+ */
+EAPI Eina_Bool      eeze_disk_can_unmount(void);
+
+/**
+ * @brief Return whether eject support is available in eeze
+ *
+ * Use this function to determine whether your Eeze library was compiled with an eject
+ * binary available.
+ * @since 1.1
+ */
+EAPI Eina_Bool      eeze_disk_can_eject(void);
+
 /**
  * @brief Create a new disk object from a /sys/ path or /dev/ path
  * @param path The /sys/ or /dev path of the disk; CANNOT be #NULL

legacy/eeze/src/lib/eeze_disk.c

@@ -456,3 +456,21 @@ eeze_disk_removable_get(Eeze_Disk *disk)
      }
    return disk->cache.removable;
 }
+
+EAPI Eina_Bool
+eeze_disk_can_mount(void)
+{
+   return MOUNTABLE;
+}
+
+EAPI Eina_Bool
+eeze_disk_can_unmount(void)
+{
+   return UNMOUNTABLE;
+}
+
+EAPI Eina_Bool
+eeze_disk_can_eject(void)
+{
+   return EJECTABLE;
+}