Name
Name::deepCopy() const
{
Name copiedName(*this);
copiedName.m_nameBlock.resetWire();
copiedName.wireEncode(); // "compress" the underlying buffer
return copiedName;
}
status_t
CoreFile::_ReadThreadsNote(const void* data, uint32 dataSize)
{
if (dataSize < 3 * sizeof(uint32)) {
WARNING("Threads note too short\n");
return B_BAD_DATA;
}
uint32 threadCount = _ReadValue<uint32>(data, dataSize);
uint32 entrySize = _ReadValue<uint32>(data, dataSize);
uint32 cpuStateSize = _ReadValue<uint32>(data, dataSize);
if (cpuStateSize > 1024 * 1024) {
WARNING("Threads note: unreasonable CPU state size: %" B_PRIu32 "\n",
cpuStateSize);
return B_BAD_DATA;
}
typedef typename ElfClass::NoteThreadEntry Entry;
if (threadCount == 0)
return B_OK;
size_t totalEntrySize = entrySize + cpuStateSize;
// check entry size and thread count
if (entrySize == 0 || dataSize == 0 || threadCount > dataSize
|| entrySize > dataSize || cpuStateSize > dataSize
|| dataSize - 1 < totalEntrySize
|| threadCount * totalEntrySize >= dataSize) {
WARNING("Threads note: too short or invalid entry size (%" B_PRIu32
")\n", entrySize);
return B_BAD_DATA;
}
// check, if strings are null-terminated
const char* strings = (const char*)data + threadCount * totalEntrySize;
size_t stringsSize = dataSize - threadCount * totalEntrySize;
if (stringsSize == 0 || strings[stringsSize - 1] != '\0') {
WARNING("Threads note strings not terminated\n");
return B_BAD_DATA;
}
for (uint64 i = 0; i < threadCount; i++) {
// get entry values
Entry entry = {};
_ReadEntry(data, dataSize, entry, entrySize);
int32 id = Get(entry.nth_id);
int32 state = Get(entry.nth_state);
int32 priority = Get(entry.nth_priority);
uint64 stackBase = Get(entry.nth_stack_base);
uint64 stackEnd = Get(entry.nth_stack_end);
// get name
if (stringsSize == 0) {
WARNING("Thread %" B_PRIu64 " (ID %#" B_PRIx32 ") has no name\n",
i, id);
continue;
}
const char* name = strings;
size_t nameSize = strlen(name) + 1;
strings += nameSize;
stringsSize -= nameSize;
BString copiedName(name);
if (name[0] != '\0' && copiedName.Length() == 0)
return B_NO_MEMORY;
// create and add thread
CoreFileThreadInfo* thread = new(std::nothrow) CoreFileThreadInfo(id,
state, priority, stackBase, stackEnd, copiedName);
if (thread == NULL || !fThreadInfos.AddItem(thread)) {
delete thread;
return B_NO_MEMORY;
}
// get CPU state
if (!thread->SetCpuState(data, cpuStateSize))
return B_NO_MEMORY;
_Advance(data, dataSize, cpuStateSize);
}
return B_OK;
}
status_t
CoreFile::_ReadImagesNote(const void* data, uint32 dataSize)
{
if (dataSize < 2 * sizeof(uint32)) {
WARNING("Images note too short\n");
return B_BAD_DATA;
}
uint32 imageCount = _ReadValue<uint32>(data, dataSize);
uint32 entrySize = _ReadValue<uint32>(data, dataSize);
typedef typename ElfClass::NoteImageEntry Entry;
if (imageCount == 0)
return B_OK;
// check entry size and image count
if (entrySize == 0 || dataSize == 0 || imageCount > dataSize
|| dataSize - 1 < entrySize || imageCount * entrySize >= dataSize) {
WARNING("Images note: too short or invalid entry size (%" B_PRIu32
")\n", entrySize);
return B_BAD_DATA;
}
// check, if strings are null-terminated
const char* strings = (const char*)data + imageCount * entrySize;
size_t stringsSize = dataSize - imageCount * entrySize;
if (stringsSize == 0 || strings[stringsSize - 1] != '\0') {
WARNING("Images note strings not terminated\n");
return B_BAD_DATA;
}
for (uint64 i = 0; i < imageCount; i++) {
// get entry values
Entry entry = {};
_ReadEntry(data, dataSize, entry, entrySize);
int32 id = Get(entry.ni_id);
int32 type = Get(entry.ni_type);
uint64 initRoutine = Get(entry.ni_init_routine);
uint64 termRoutine = Get(entry.ni_term_routine);
uint64 textBase = Get(entry.ni_text_base);
uint64 textSize = Get(entry.ni_text_size);
int64 textDelta = Get(entry.ni_text_delta);
uint64 dataBase = Get(entry.ni_data_base);
uint64 dataSize = Get(entry.ni_data_size);
int32 deviceId = Get(entry.ni_device);
int64 nodeId = Get(entry.ni_node);
uint64 symbolTable = Get(entry.ni_symbol_table);
uint64 symbolHash = Get(entry.ni_symbol_hash);
uint64 stringTable = Get(entry.ni_string_table);
// get name
if (stringsSize == 0) {
WARNING("Image %" B_PRIu64 " (ID %#" B_PRIx32 ") has no name\n",
i, id);
continue;
}
const char* name = strings;
size_t nameSize = strlen(name) + 1;
strings += nameSize;
stringsSize -= nameSize;
BString copiedName(name);
if (name[0] != '\0' && copiedName.Length() == 0)
return B_NO_MEMORY;
// create and add image
CoreFileAreaInfo* textArea = _FindArea(textBase);
CoreFileAreaInfo* dataArea = _FindArea(dataBase);
CoreFileImageInfo* image = new(std::nothrow) CoreFileImageInfo(id, type,
initRoutine, termRoutine, textBase, textSize, textDelta, dataBase,
dataSize, deviceId, nodeId, symbolTable, symbolHash, stringTable,
textArea, dataArea, copiedName);
if (image == NULL || !fImageInfos.AddItem(image)) {
delete image;
return B_NO_MEMORY;
}
}
return B_OK;
}
status_t
CoreFile::_ReadAreasNote(const void* data, uint32 dataSize)
{
if (dataSize < 2 * sizeof(uint32)) {
WARNING("Areas note too short\n");
return B_BAD_DATA;
}
uint32 areaCount = _ReadValue<uint32>(data, dataSize);
uint32 entrySize = _ReadValue<uint32>(data, dataSize);
typedef typename ElfClass::NoteAreaEntry Entry;
if (areaCount == 0)
return B_OK;
// check entry size and area count
if (entrySize == 0 || dataSize == 0 || areaCount > dataSize
|| dataSize - 1 < entrySize || areaCount * entrySize >= dataSize) {
WARNING("Areas note: too short or invalid entry size (%" B_PRIu32 ")\n",
entrySize);
return B_BAD_DATA;
}
// check, if strings are null-terminated
const char* strings = (const char*)data + areaCount * entrySize;
size_t stringsSize = dataSize - areaCount * entrySize;
if (stringsSize == 0 || strings[stringsSize - 1] != '\0') {
WARNING("Areas note strings not terminated\n");
return B_BAD_DATA;
}
for (uint64 i = 0; i < areaCount; i++) {
// get entry values
Entry entry = {};
_ReadEntry(data, dataSize, entry, entrySize);
int32 id = Get(entry.na_id);
uint64 baseAddress = Get(entry.na_base);
uint64 size = Get(entry.na_size);
uint64 ramSize = Get(entry.na_ram_size);
uint32 lock = Get(entry.na_lock);
uint32 protection = Get(entry.na_protection);
// get name
if (stringsSize == 0) {
WARNING("Area %" B_PRIu64 " (ID %#" B_PRIx32 " @ %#" B_PRIx64
") has no name\n", i, id, baseAddress);
continue;
}
const char* name = strings;
size_t nameSize = strlen(name) + 1;
strings += nameSize;
stringsSize -= nameSize;
BString copiedName(name);
if (name[0] != '\0' && copiedName.Length() == 0)
return B_NO_MEMORY;
// create and add area
ElfSegment* segment = _FindAreaSegment(baseAddress);
if (segment == NULL) {
WARNING("No matching segment found for area %" B_PRIu64 " (ID %#"
B_PRIx32 " @ %#" B_PRIx64 ", name: '%s')", i, id, baseAddress,
name);
continue;
}
CoreFileAreaInfo* area = new(std::nothrow) CoreFileAreaInfo(segment, id,
baseAddress, size, ramSize, lock, protection, copiedName);
if (area == NULL || !fAreaInfos.AddItem(area)) {
delete area;
return B_NO_MEMORY;
}
}
return B_OK;
}