sys_thread_t sys_thread_new(const char* name, lwip_thread_fn thread, void* arg, int stacksize, int prio) {
LWIP_UNUSED_ARG(name);
LWIP_UNUSED_ARG(stacksize);
LWIP_UNUSED_ARG(prio);
return sys_clone((int (*)(void*)) thread, NULL, CLONE_VM | CLONE_FILES | CLONE_FS | CLONE_SIGHAND, arg);
}
static int local_clone (int (*fn)(void *), void *arg, ...) {
/* Leave 4kB of gap between the callers stack and the new clone. This
* should be more than sufficient for the caller to call waitpid() until
* the cloned thread terminates.
*
* It is important that we set the CLONE_UNTRACED flag, because newer
* versions of "gdb" otherwise attempt to attach to our thread, and will
* attempt to reap its status codes. This subsequently results in the
* caller hanging indefinitely in waitpid(), waiting for a change in
* status that will never happen. By setting the CLONE_UNTRACED flag, we
* prevent "gdb" from stealing events, but we still expect the thread
* lister to fail, because it cannot PTRACE_ATTACH to the process that
* is being debugged. This is OK and the error code will be reported
* correctly.
*/
return sys_clone(fn, (char *)&arg - 4096,
CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_UNTRACED, arg, 0, 0, 0);
}
int init(void) {
tty_read_init();
inode_t* ino_outp;
if(unlikely((ino_outp = vfs_mkdev("tty", 0, S_IFCHR | 0666)) == NULL))
return -1;
inode_t* ino_inp;
if(unlikely((ino_inp = vfs_mkdev("tty", 1, S_IFCHR | 0666)) == NULL))
return -1;
struct tty_context* tio = (struct tty_context*) kmalloc(sizeof(struct tty_context), GFP_KERNEL);
if(unlikely(!tio)) {
kprintf(ERROR "tty: no memory left!");
return -1;
}
memset(tio, 0, sizeof(struct tty_context));
tio->ios.c_iflag = TTYDEF_IFLAG;
tio->ios.c_oflag = TTYDEF_OFLAG;
tio->ios.c_cflag = TTYDEF_CFLAG;
tio->ios.c_lflag = TTYDEF_LFLAG;
tio->ios.c_cc[VEOF] = CEOF;
tio->ios.c_cc[VEOL] = CEOL;
tio->ios.c_cc[VERASE] = CERASE;
tio->ios.c_cc[VINTR] = CINTR;
tio->ios.c_cc[VKILL] = CKILL;
tio->ios.c_cc[VMIN] = CMIN;
tio->ios.c_cc[VQUIT] = CQUIT;
tio->ios.c_cc[VSUSP] = CSUSP;
tio->ios.c_cc[VTIME] = CTIME;
tio->ios.c_cc[VSTART] = CSTART;
tio->ios.c_cc[VSTOP] = CSTOP;
tio->ios.__c_ispeed =
tio->ios.__c_ospeed = TTYDEF_SPEED;
tio->winsize.ws_row = 25;
tio->winsize.ws_col = 80;
tio->winsize.ws_xpixel = 80 * 8;
tio->winsize.ws_ypixel = 25 * 16;
tio->lined = 0;
tio->output = 1;
tio->outlen = 0;
fifo_init(&tio->in, TTY_BUFSIZ, O_NONBLOCK);
fifo_init(&tio->uin, TTY_BUFSIZ, O_NONBLOCK);
ino_outp->read = tty_read;
ino_outp->write = tty_output_write;
ino_outp->ioctl = tty_ioctl;
ino_outp->userdata = (void*) tio;
ino_inp->read = tty_read;
ino_inp->write = tty_input_write;
ino_inp->ioctl = tty_ioctl;
ino_inp->userdata = (void*) tio;
extern int tty_daemon(void*);
if(sys_clone(tty_daemon, NULL, CLONE_VM | CLONE_FILES | CLONE_FS | CLONE_SIGHAND, NULL) < 0)
kprintf(ERROR "tty: daemon could not start! Some actions like keystroke's binding will be disabled\n");
sys_symlink("/dev/tty1", "/dev/stdin");
sys_symlink("/dev/tty0", "/dev/stdout");
sys_symlink("/dev/tty0", "/dev/stderr");
sys_symlink("/dev/tty0", "/dev/tty"); /* fallback */
return 0;
}
