bool PCProcess::getExecFileDescriptor(std::string filename, bool waitForTrap, fileDescriptor &desc)
{
Address mainFileBase = 0;
Dyninst::ProcControlAPI::ExecFileInfo* efi = pcProc_->getExecutableInfo();
desc = fileDescriptor(filename, efi->fileBase, efi->fileBase, false);
desc.setHandles(efi->processHandle, efi->fileHandle);
delete efi;
return true;
}
NZMQT_INLINE SocketNotifierZMQSocket::SocketNotifierZMQSocket(ZMQContext* context_, Type type_)
: super(context_, type_)
, socketNotifyRead_(0)
, socketNotifyWrite_(0)
{
qintptr fd = fileDescriptor();
socketNotifyRead_ = new QSocketNotifier(fd, QSocketNotifier::Read, this);
QObject::connect(socketNotifyRead_, &QSocketNotifier::activated, this, &SocketNotifierZMQSocket::socketReadActivity);
socketNotifyWrite_ = new QSocketNotifier(fd, QSocketNotifier::Write, this);
QObject::connect(socketNotifyWrite_, &QSocketNotifier::activated, this, &SocketNotifierZMQSocket::socketWriteActivity);
}
// processLinkMaps: get a list of all loaded objects in fileDescriptor form.
bool dynamic_linking::processLinkMaps(pdvector<fileDescriptor> &descs) {
int proc_fd = proc->getRepresentativeLWP()->get_fd();
if(!proc_fd){ return false;}
// step 2: get the runtime loader table from the process
Address ldr_base_addr;
ldr_context first;
ldr_module module;
assert(proc->readDataSpace((const void*)LDR_BASE_ADDR,sizeof(Address), &ldr_base_addr, true));
assert(proc->readDataSpace((const void*)ldr_base_addr,sizeof(ldr_context), &first, true));
assert(proc->readDataSpace((const void *) first.head,sizeof(ldr_module), &module, true));
while (module.next != first.head) {
if (module.nregions == 0)
{
assert(proc->readDataSpace((const void *) module.next,sizeof(ldr_module), &module,true));
continue;
}
pdstring obj_name = pdstring(readDataString(proc, module.name));
ldr_region *regions;
regions = (ldr_region *) malloc(module.nregions * sizeof(ldr_region));
assert(proc->readDataSpace((const void *) module.regions,
sizeof(ldr_region)*module.nregions, regions, true));
long offset = regions[0].mapaddr - regions[0].vaddr;
#ifdef notdef
if (offset) {
bperr("*** shared lib at non-default offset **: ");
bperr(" %s\n", obj_name.c_str());
bperr(" offset = %ld\n", offset);
} else {
bperr("*** shared lib **: ");
bperr(" %s\n", obj_name.c_str());
bperr(" at = %ld\n", regions[0].mapaddr);
}
#endif
for (int i=0; i < module.nregions; i++) {
long newoffset = regions[i].mapaddr - regions[i].vaddr;
if (newoffset != offset) {
bperr( "shared lib regions have different offsets\n");
}
regions[i].name = (long unsigned) readDataString(proc,
(void *) regions[i].name);
// bperr(" region %d (%s) ", i, regions[i].name);
// bperr("addr = %lx, ", regions[i].vaddr);
// bperr("mapped at = %lx, ", regions[i].mapaddr);
// bperr("size = %x\n", regions[i].size);
}
descs.push_back(fileDescriptor(obj_name,
offset,
offset,
true));
free(regions);
assert(proc->readDataSpace((const void *) module.next,sizeof(ldr_module), &module,true));
}
return true;
}
// processLinkMaps: This routine is called by getSharedObjects to
// process all shared objects that have been mapped into the process's
// address space. This routine reads the link maps from the application
// process to find the shared object file base mappings. It returns 0 on error.
bool dynamic_linking::processLinkMaps(pdvector<fileDescriptor> &descs) {
r_debug debug_elm;
if(!proc->readDataSpace((caddr_t)(r_debug_addr),
sizeof(r_debug),(caddr_t)&(debug_elm),true)) {
// bperr("read d_ptr_addr failed r_debug_addr = 0x%lx\n",r_debug_addr);
return 0;
}
// get each link_map object
Link_map *next_link_map = debug_elm.r_map;
Address next_addr = (Address)next_link_map;
while(next_addr != 0){
Link_map link_elm;
if(!proc->readDataSpace((caddr_t)(next_addr),
sizeof(Link_map),(caddr_t)&(link_elm),true)) {
logLine("read next_link_map failed\n");
return 0;
}
// get file name
char f_name[256]; // assume no file names greater than 256 chars
// check to see if reading 256 chars will go out of bounds
// of data segment
u_int f_amount = 256;
bool done = false;
for(u_int i=0; (i<256) && (!done); i++){
if(!proc->readDataSpace((caddr_t)((u_int)(link_elm.l_name)+i),
sizeof(char),(caddr_t)(&(f_name[i])),true)){
}
if(f_name[i] == '\0'){
done = true;
f_amount = i+1;
}
}
f_name[f_amount-1] = '\0';
pdstring obj_name = pdstring(f_name);
parsing_cerr <<
"dynamicLinking::processLinkMaps(): file name of next shared obj="
<< obj_name << endl;
// create a mapped_object and add it to the list
// kludge: ignore the entry if it has the same name as the
// executable file...this seems to be the first link-map entry
// VG(09/25/01): also ignore if address is 65536 or name is (unknown)
if(obj_name != proc->getAOut()->fileName() &&
obj_name != proc->getAOut()->fullName() &&
link_elm.l_addr != 65536 &&
obj_name != "(unknown)"
//strncmp(obj_name.c_str(), "(unknown)", 10)
) {
fileDescriptor desc = fileDescriptor(obj_name, link_elm.l_addr,
link_elm.l_addr,
true);
descs.push_back(desc);
}
next_addr = (Address)link_elm.l_next;
}
return true;
}
