void KCrash::startDrKonqi(const char *argv[], int argc)
{
int socket = openSocket();
if(socket < -1)
{
startDirectly(argv, argc);
return;
}
klauncher_header header;
header.cmd = LAUNCHER_EXEC_NEW;
const int BUFSIZE = 8192; // make sure this is big enough
char buffer[BUFSIZE + 10];
int pos = 0;
long argcl = argc;
memcpy(buffer + pos, &argcl, sizeof(argcl));
pos += sizeof(argcl);
for(int i = 0; i < argc; ++i)
{
int len = strlen(argv[i]) + 1; // include terminating \0
if(pos + len > BUFSIZE)
{
fprintf(stderr, "BUFSIZE in KCrash not big enough!\n");
startDirectly(argv, argc);
return;
}
memcpy(buffer + pos, argv[i], len);
pos += len;
}
long env = 0;
memcpy(buffer + pos, &env, sizeof(env));
pos += sizeof(env);
long avoid_loops = 0;
memcpy(buffer + pos, &avoid_loops, sizeof(avoid_loops));
pos += sizeof(avoid_loops);
header.arg_length = pos;
write_socket(socket, (char *)&header, sizeof(header));
write_socket(socket, buffer, pos);
if(read_socket(socket, (char *)&header, sizeof(header)) < 0 || header.cmd != LAUNCHER_OK)
{
startDirectly(argv, argc);
return;
}
long pid;
read_socket(socket, buffer, header.arg_length);
pid = *((long *)buffer);
alarm(0); // Seems we made it....
for(;;)
{
if(kill(pid, 0) < 0)
_exit(253);
sleep(1);
// the debugger should stop this process anyway
}
}
static bool startProcessInternal(int argc, const char *argv[], bool waitAndExit, bool directly)
{
#ifndef EMSCRIPTEN
fprintf(stderr, "KCrash: Attempting to start %s %s\n", argv[0], directly ? "directly" : "from kdeinit");
pid_t pid = directly ? startDirectly(argv) : startFromKdeinit(argc, argv);
if (pid > 0 && waitAndExit) {
// Seems we made it....
alarm(0); //stop the pending alarm that was set at the top of the defaultCrashHandler
// Wait forever until the started process exits. This code path is executed
// when launching drkonqi. Note that drkonqi will stop this process in the meantime.
if (directly) {
//if the process was started directly, use waitpid(), as it's a child...
while(waitpid(-1, NULL, 0) != pid) {}
} else {
#ifdef Q_OS_LINUX
// Declare the process that will be debugging the crashed KDE app (#245529)
#ifndef PR_SET_PTRACER
# define PR_SET_PTRACER 0x59616d61
#endif
prctl(PR_SET_PTRACER, pid, 0, 0, 0);
#endif
//...else poll its status using kill()
while(kill(pid, 0) >= 0) {
sleep(1);
}
}
_exit(253);
}
return (pid > 0); //return true on success
#else
return false;
#endif
}
