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* Cleanup, added TODO.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29589 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2009-03-18 14:36:19 +00:00
parent d87fd57ea7
commit 941b2f41ec
1 changed files with 30 additions and 20 deletions
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50
src/system/kernel/device_manager/device_manager.cpp
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@ -406,13 +406,16 @@ static status_t
control_device_manager(const char* subsystem, uint32 function, void* buffer,
size_t bufferSize)
{
// TODO: this function passes pointers to userland, and uses pointers
// to device nodes that came from userland - this is completely unsafe
// and should be changed.
switch (function) {
case DM_GET_ROOT:
{
device_node_cookie cookie;
if (!IS_USER_ADDRESS(buffer))
return B_BAD_ADDRESS;
if (bufferSize < sizeof(device_node_cookie))
if (bufferSize != sizeof(device_node_cookie))
return B_BAD_VALUE;
cookie = (device_node_cookie)sRootNode;
@ -424,7 +427,7 @@ control_device_manager(const char* subsystem, uint32 function, void* buffer,
{
if (!IS_USER_ADDRESS(buffer))
return B_BAD_ADDRESS;
if (bufferSize < sizeof(device_node_cookie))
if (bufferSize != sizeof(device_node_cookie))
return B_BAD_VALUE;
device_node_cookie cookie;
@ -448,7 +451,7 @@ control_device_manager(const char* subsystem, uint32 function, void* buffer,
{
if (!IS_USER_ADDRESS(buffer))
return B_BAD_ADDRESS;
if (bufferSize < sizeof(device_node_cookie))
if (bufferSize != sizeof(device_node_cookie))
return B_BAD_VALUE;
device_node_cookie cookie;
@ -458,7 +461,9 @@ control_device_manager(const char* subsystem, uint32 function, void* buffer,
device_node* last = (device_node*)cookie;
if (!last->Parent())
return B_ENTRY_NOT_FOUND;
NodeList::ConstIterator iterator = last->Parent()->Children().GetIterator();
NodeList::ConstIterator iterator
= last->Parent()->Children().GetIterator();
// skip those we already traversed
while (iterator.HasNext()) {
@ -479,16 +484,16 @@ control_device_manager(const char* subsystem, uint32 function, void* buffer,
case DM_GET_NEXT_ATTRIBUTE:
{
struct device_attr_info attr_info;
struct device_attr_info attrInfo;
if (!IS_USER_ADDRESS(buffer))
return B_BAD_ADDRESS;
if (bufferSize < sizeof(struct device_attr_info))
if (bufferSize != sizeof(device_attr_info))
return B_BAD_VALUE;
if (user_memcpy(&attr_info, buffer, sizeof(struct device_attr_info)) < B_OK)
if (user_memcpy(&attrInfo, buffer, sizeof(device_attr_info)) < B_OK)
return B_BAD_ADDRESS;
device_node* node = (device_node*)attr_info.node_cookie;
device_attr* last = (device_attr*)attr_info.cookie;
device_node* node = (device_node*)attrInfo.node_cookie;
device_attr* last = (device_attr*)attrInfo.cookie;
AttributeList::Iterator iterator = node->Attributes().GetIterator();
// skip those we already traversed
while (iterator.HasNext() && last != NULL) {
@ -499,25 +504,30 @@ control_device_manager(const char* subsystem, uint32 function, void* buffer,
}
if (!iterator.HasNext()) {
attr_info.cookie = 0;
attrInfo.cookie = 0;
return B_ENTRY_NOT_FOUND;
}
device_attr* attr = iterator.Next();
attr_info.cookie = (device_node_cookie)attr;
strlcpy(attr_info.name, attr->name, 254);
attr_info.type = attr->type;
switch (attr_info.type) {
attrInfo.cookie = (device_node_cookie)attr;
strlcpy(attrInfo.name, attr->name, 254);
attrInfo.type = attr->type;
switch (attrInfo.type) {
case B_UINT8_TYPE:
attr_info.value.ui8 = attr->value.ui8; break;
attrInfo.value.ui8 = attr->value.ui8;
break;
case B_UINT16_TYPE:
attr_info.value.ui16 = attr->value.ui16; break;
attrInfo.value.ui16 = attr->value.ui16;
break;
case B_UINT32_TYPE:
attr_info.value.ui32 = attr->value.ui32; break;
attrInfo.value.ui32 = attr->value.ui32;
break;
case B_UINT64_TYPE:
attr_info.value.ui64 = attr->value.ui64; break;
attrInfo.value.ui64 = attr->value.ui64;
break;
case B_STRING_TYPE:
strlcpy(attr_info.value.string, attr->value.string, 254); break;
strlcpy(attrInfo.value.string, attr->value.string, 254);
break;
/*case B_RAW_TYPE:
if (attr.value.raw.length > attr_info->attr.value.raw.length)
attr.value.raw.length = attr_info->attr.value.raw.length;
@ -527,7 +537,7 @@ control_device_manager(const char* subsystem, uint32 function, void* buffer,
}
// copy back to user space
return user_memcpy(buffer, &attr_info, sizeof(struct device_attr_info));
return user_memcpy(buffer, &attrInfo, sizeof(device_attr_info));
}
}