* Added helper for support CD/DVD mount, umount, eject etc.

mvc/src/utils/deviceHelper.py

@@ -0,0 +1,84 @@
+# This Python file uses the following encoding: utf-8
+"""
+device (cd, dvd) helper
+"""
+
+import string
+import os
+import popen2
+
+def volname(mntp):
+    """read volume name from cd/dvd"""
+    dev = mountpoint_to_dev(mntp)
+    if dev != None:
+        try:
+            a = open(dev,"rb")
+            a.seek(32808)
+            b = a.read(32).strip()
+            a.close()
+        except:
+            return None
+        return b
+    return None
+    
+def volmount(mntp):
+    """mount device, return True/False"""
+    _in,_out,_err = popen2.popen3("mount %s" % mntp)
+    inf = _err.readlines()
+    if len(inf) > 0:
+        for i in inf:
+            i.strip()
+        return i
+    else:
+        return 'ok'
+
+def volumount(mntp):
+    """mount device, return True/False"""
+    _in,_out,_err = popen2.popen3("umount %s" % mntp)
+    inf = _err.readlines()
+    if len(inf) > 0:
+        for error in inf:
+            error.strip()
+            
+        if error.strip()[:7] == 'umount:':
+            return error.strip()
+    return 'ok'
+    
+def check_mount(dev):
+    """Refresh the entries from fstab or mount."""
+    mounts = os.popen('mount')
+    for line in mounts.readlines():
+        parts = line.split()
+        device, txt1, mount_point, txt2, filesystem, options = parts
+        if device == dev:
+            return True
+    return False
+
+def mountpoint_to_dev(mntp):
+    """guess mountpoint from fstab"""
+    fstab = open("/etc/fstab")
+    for line in fstab.readlines():
+        a = line.split()
+        try:
+            if a[1] == mntp and a[0][0] != '#':
+                fstab.close()
+                return a[0]
+        except:
+            pass
+    fstab.close()
+    return None
+    
+def eject_cd(eject_app,cd):
+    """mount device, return True/False"""
+    if len(eject_app) > 0:
+        _in,_out,_err = popen2.popen3("%s %s" %(eject_app,cd))
+        inf = _err.readlines()
+        error = ''
+        for error in inf:
+            error.strip()
+        
+        if error.strip()[:6] == 'eject:':
+            return error.strip()
+        else:
+            return 'ok'
+    return "Mount point does'nt exist in fstab"