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libmtp: Filter ro storage at the python level for better debugging

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Kovid Goyal 2012-08-25 09:01:25 +05:30
parent efd41d87ed
commit 34efc911ae
2 changed files with 8 additions and 9 deletions
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1
src/calibre/devices/mtp/unix/driver.py
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@ -146,6 +146,7 @@ class MTP_DEVICE(MTPDeviceBase):
raise OpenFailed('')
storage = sorted(self.dev.storage_info, key=operator.itemgetter('id'))
storage = [x for x in storage if x.get('rw', False)]
if not storage:
self.blacklisted_devices.add(connected_device)
raise OpenFailed('No storage found for device %s'%(connected_device,))

16
src/calibre/devices/mtp/unix/libmtp.c
View File

@ -347,28 +347,26 @@ static PyObject *
libmtp_Device_storage_info(libmtp_Device *self, void *closure) {
PyObject *ans, *loc;
LIBMTP_devicestorage_t *storage;
int ro = 0;
ENSURE_DEV(NULL); ENSURE_STORAGE(NULL);
ans = PyList_New(0);
if (ans == NULL) { PyErr_NoMemory(); return NULL; }
for (storage = self->device->storage; storage != NULL; storage = storage->next) {
// Ignore read only storage
if (storage->StorageType == ST_FixedROM || storage->StorageType == ST_RemovableROM) continue;
// Storage IDs with the lower 16 bits 0x0000 are not supposed to be
// writeable.
if ((storage->id & 0x0000FFFFU) == 0x00000000U) continue;
// Also check the access capability to avoid e.g. deletable only storages
if (storage->AccessCapability == AC_ReadOnly || storage->AccessCapability == AC_ReadOnly_with_Object_Deletion) continue;
ro = 0;
// Check if read only storage
if (storage->StorageType == ST_FixedROM || storage->StorageType == ST_RemovableROM || (storage->id & 0x0000FFFFU) == 0x00000000U || storage->AccessCapability == AC_ReadOnly || storage->AccessCapability == AC_ReadOnly_with_Object_Deletion) ro = 1;
loc = Py_BuildValue("{s:k,s:O,s:K,s:K,s:K,s:s,s:s}",
loc = Py_BuildValue("{s:k,s:O,s:K,s:K,s:K,s:s,s:s,s:O}",
"id", storage->id,
"removable", ((storage->StorageType == ST_RemovableRAM) ? Py_True : Py_False),
"capacity", storage->MaxCapacity,
"freespace_bytes", storage->FreeSpaceInBytes,
"freespace_objects", storage->FreeSpaceInObjects,
"name", storage->StorageDescription,
"volume_id", storage->VolumeIdentifier
"volume_id", storage->VolumeIdentifier,
"rw", (ro) ? Py_False : Py_True
);
if (loc == NULL) return NULL;