int
ethernet_open (struct device *dev)
{
error_t err;
device_t master_device;
struct ether_device *edev = (struct ether_device *) dev->priv;
assert (edev->ether_port == MACH_PORT_NULL);
err = ports_create_port (etherreadclass, etherport_bucket,
sizeof (struct port_info), &edev->readpt);
assert_perror (err);
edev->readptname = ports_get_right (edev->readpt);
mach_port_insert_right (mach_task_self (), edev->readptname, edev->readptname,
MACH_MSG_TYPE_MAKE_SEND);
mach_port_set_qlimit (mach_task_self (), edev->readptname, MACH_PORT_QLIMIT_MAX);
master_device = file_name_lookup (dev->name, O_READ | O_WRITE, 0);
if (master_device != MACH_PORT_NULL)
{
/* The device name here is the path of a device file. */
err = device_open (master_device, D_WRITE | D_READ, "eth", &edev->ether_port);
mach_port_deallocate (mach_task_self (), master_device);
if (err)
error (2, err, "device_open on %s", dev->name);
err = device_set_filter (edev->ether_port, ports_get_right (edev->readpt),
MACH_MSG_TYPE_MAKE_SEND, 0,
bpf_ether_filter, bpf_ether_filter_len);
if (err)
error (2, err, "device_set_filter on %s", dev->name);
}
else
{
/* No, perhaps a Mach device? */
int file_errno = errno;
err = get_privileged_ports (0, &master_device);
if (err)
{
error (0, file_errno, "file_name_lookup %s", dev->name);
error (2, err, "and cannot get device master port");
}
err = device_open (master_device, D_WRITE | D_READ, dev->name, &edev->ether_port);
mach_port_deallocate (mach_task_self (), master_device);
if (err)
{
error (0, file_errno, "file_name_lookup %s", dev->name);
error (2, err, "device_open(%s)", dev->name);
}
err = device_set_filter (edev->ether_port, ports_get_right (edev->readpt),
MACH_MSG_TYPE_MAKE_SEND, 0,
ether_filter, ether_filter_len);
if (err)
error (2, err, "device_set_filter on %s", dev->name);
}
return 0;
}
int ethernet_open (char *dev_name, device_t master_device,
struct port_bucket *etherport_bucket,
struct port_class *etherreadclass)
{
error_t err;
assert (ether_port == MACH_PORT_NULL);
err = ports_create_port (etherreadclass, etherport_bucket,
sizeof (struct port_info), &readpt);
if (err)
error (2, err, "ports_create_port");
readptname = ports_get_right (readpt);
mach_port_insert_right (mach_task_self (), readptname, readptname,
MACH_MSG_TYPE_MAKE_SEND);
mach_port_set_qlimit (mach_task_self (), readptname, MACH_PORT_QLIMIT_MAX);
err = device_open (master_device, D_WRITE | D_READ, "eth", ðer_port);
mach_port_deallocate (mach_task_self (), master_device);
if (err)
error (2, err, "device_open: %s", dev_name);
err = device_set_filter (ether_port, ports_get_right (readpt),
MACH_MSG_TYPE_MAKE_SEND, 0,
(unsigned short *)ether_filter, ether_filter_len);
if (err)
error (2, err, "device_set_filter: %s", dev_name);
set_promisc (dev_name, ether_port, 1);
return 0;
}
/* Callback function needed for calls to fshelp_fetch_root. See
<hurd/fshelp.h> for the interface description. */
static error_t
_netfs_translator_callback2_fn (void *cookie1, void *cookie2, int flags,
mach_port_t *underlying,
mach_msg_type_name_t *underlying_type)
{
error_t err;
struct protid *cred;
struct node *node = cookie1;
struct iouser *user;
err = iohelp_create_simple_iouser (&user, node->nn_stat.st_uid,
node->nn_stat.st_gid);
if (err)
return err;
cred = netfs_make_protid (netfs_make_peropen (node, flags, cookie2),
user);
if (cred)
{
*underlying = ports_get_right (cred);
*underlying_type = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (cred);
return 0;
}
else
{
iohelp_free_iouser (user);
return errno;
}
}
/* Implement io_duplicate as described in <hurd/io.defs>. */
kern_return_t
diskfs_S_io_duplicate (struct protid *cred,
mach_port_t *port,
mach_msg_type_name_t *portpoly)
{
error_t err;
struct protid *newpi;
if (!cred)
return EOPNOTSUPP;
mutex_lock (&cred->po->np->lock);
err = diskfs_create_protid (cred->po, cred->user, &newpi);
if (! err)
{
*port = ports_get_right (newpi);
*portpoly = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (newpi);
}
mutex_unlock (&cred->po->np->lock);
return err;
}
error_t
fshelp_get_identity (struct port_bucket *bucket,
ino_t fileno,
mach_port_t *pt)
{
struct idspec *i;
error_t err = 0;
error_t check_port (void *arg)
{
struct idspec *i = arg;
if (i->fileno == fileno)
{
*pt = ports_get_right (i);
return 1;
}
else
return 0;
}
mutex_lock (&idlock);
if (!idclass)
id_initialize ();
*pt = MACH_PORT_NULL;
ports_class_iterate (idclass, check_port);
if (*pt != MACH_PORT_NULL)
{
mutex_unlock (&idlock);
return 0;
}
err = ports_create_port (idclass, bucket, sizeof (struct idspec), &i);
if (err)
{
mutex_unlock (&idlock);
return err;
}
i->fileno = fileno;
*pt = ports_get_right (i);
ports_port_deref (i);
mutex_unlock (&idlock);
return 0;
}
/* Return a new connection from a socket previously listened. */
error_t
S_socket_accept (struct sock_user *user,
mach_port_t *port, mach_msg_type_name_t *port_type,
mach_port_t *peer_addr_port,
mach_msg_type_name_t *peer_addr_port_type)
{
error_t err;
struct sock *sock;
if (!user)
return EOPNOTSUPP;
sock = user->sock;
err = ensure_connq (sock);
if (!err)
{
struct timespec noblock = {0, 0};
struct sock *peer_sock;
err = connq_listen (sock->listen_queue,
(sock->flags & PFLOCAL_SOCK_NONBLOCK) ? &noblock : NULL,
&peer_sock);
if (!err)
{
struct addr *peer_addr;
*port_type = MACH_MSG_TYPE_MAKE_SEND;
err = sock_create_port (peer_sock, port);
if (!err)
err = sock_get_addr (peer_sock, &peer_addr);
if (!err)
{
*peer_addr_port = ports_get_right (peer_addr);
*peer_addr_port_type = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (peer_addr);
}
else
{
/* TEAR DOWN THE CONNECTION XXX */
}
}
}
return err;
}
/* Find out the name of a socket. */
error_t
S_socket_name (struct sock_user *user,
mach_port_t *addr_port, mach_msg_type_name_t *addr_port_type)
{
error_t err;
struct addr *addr;
if (!user)
return EOPNOTSUPP;
err = sock_get_addr (user->sock, &addr);
if (err)
return err;
*addr_port = ports_get_right (addr);
*addr_port_type = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (addr);
return 0;
}
error_t
netfs_S_dir_mkfile (struct protid *diruser, int flags, mode_t mode,
mach_port_t *newfile, mach_msg_type_name_t *newfiletype)
{
error_t err;
struct node *np;
struct iouser *user;
struct protid *newpi;
pthread_mutex_lock (&diruser->po->np->lock);
err = netfs_attempt_mkfile (diruser->user, diruser->po->np, mode, &np);
if (!err)
{
/* the dir is now unlocked and NP is locked */
flags &= OPENONLY_STATE_MODES;
err = iohelp_dup_iouser (&user, diruser->user);
if (! err)
{
newpi = netfs_make_protid (netfs_make_peropen (np, flags,
diruser->po),
user);
if (newpi)
{
*newfile = ports_get_right (newpi);
*newfiletype = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (newpi);
}
else
{
err = errno;
iohelp_free_iouser (user);
}
}
netfs_nput (np);
}
return err;
}
error_t
netfs_S_io_restrict_auth (struct protid *user,
mach_port_t *newport,
mach_msg_type_name_t *newporttype,
uid_t *uids,
mach_msg_type_number_t nuids,
gid_t *gids,
mach_msg_type_number_t ngids)
{
error_t err;
struct protid *newpi;
struct iouser *new_user;
if (!user)
return EOPNOTSUPP;
err = iohelp_restrict_iouser (&new_user, user->user,
uids, nuids, gids, ngids);
if (err)
return err;
refcount_ref (&user->po->refcnt);
newpi = netfs_make_protid (user->po, new_user);
if (newpi)
{
*newport = ports_get_right (newpi);
*newporttype = MACH_MSG_TYPE_MAKE_SEND;
}
else
{
refcount_deref (&user->po->refcnt);
iohelp_free_iouser (new_user);
err = ENOMEM;
}
ports_port_deref (newpi);
return err;
}
kern_return_t
trivfs_S_io_restrict_auth (struct trivfs_protid *cred,
mach_port_t reply,
mach_msg_type_name_t replytype,
mach_port_t *newport,
mach_msg_type_name_t *newporttype,
uid_t *uids, size_t nuids,
uid_t *gids, size_t ngids)
{
int i;
error_t err;
struct trivfs_protid *newcred;
struct idvec *uvec, *gvec;
struct iouser *user;
if (!cred)
return EOPNOTSUPP;
if (cred->isroot)
/* CRED has root access, and so may use any ids. */
{
err = iohelp_create_complex_iouser (&user, uids, nuids, gids, ngids);
if (err)
return err;
}
else
{
uvec = make_idvec ();
if (! uvec)
return ENOMEM;
gvec = make_idvec ();
if (! gvec)
{
idvec_free (uvec);
return ENOMEM;
}
/* Otherwise, use any of the requested ids that CRED already has. */
for (i = 0; i < cred->user->uids->num; i++)
if (listmember (uids, cred->user->uids->ids[i], nuids))
{
err = idvec_add (uvec, cred->user->uids->ids[i]);
if (err)
goto out;
}
for (i = 0; i < cred->user->gids->num; i++)
if (listmember (gids, cred->user->gids->ids[i], ngids))
{
err = idvec_add (gvec, cred->user->gids->ids[i]);
if (err)
goto out;
}
err = iohelp_create_iouser (&user, uvec, gvec);
if (err)
{
out:
idvec_free (uvec);
idvec_free (gvec);
return err;
}
}
err = ports_create_port (cred->po->cntl->protid_class,
cred->po->cntl->protid_bucket,
sizeof (struct trivfs_protid),
&newcred);
if (err)
{
iohelp_free_iouser (user);
return err;
}
newcred->isroot = 0;
mutex_lock (&cred->po->cntl->lock);
newcred->po = cred->po;
newcred->po->refcnt++;
mutex_unlock (&cred->po->cntl->lock);
if (cred->isroot && idvec_contains (user->uids, 0))
newcred->isroot = 1;
newcred->user = user;
newcred->hook = cred->hook;
err = io_restrict_auth (cred->realnode, &newcred->realnode,
user->uids->ids, user->uids->num,
user->gids->ids, user->gids->num);
if (!err && trivfs_protid_create_hook)
{
err = (*trivfs_protid_create_hook) (newcred);
if (err)
mach_port_deallocate (mach_task_self (), newcred->realnode);
}
if (err)
/* Signal that the user destroy hook shouldn't be called on NEWCRED. */
newcred->realnode = MACH_PORT_NULL;
else
{
*newport = ports_get_right (newcred);
*newporttype = MACH_MSG_TYPE_MAKE_SEND;
}
/* This will destroy NEWCRED if we got an error and didn't do the
ports_get_right above. */
ports_port_deref (newcred);
return 0;
}
/* Return in FILE & FILE_TYPE the file in FSYS corresponding to the NFS file
handle HANDLE & HANDLE_LEN. */
error_t
diskfs_S_fsys_getfile (mach_port_t fsys,
mach_port_t reply, mach_msg_type_name_t reply_type,
uid_t *uids, mach_msg_type_number_t nuids,
gid_t *gids, mach_msg_type_number_t ngids,
char *handle, mach_msg_type_number_t handle_len,
mach_port_t *file, mach_msg_type_name_t *file_type)
{
int flags;
error_t err;
struct node *node;
const union diskfs_fhandle *f;
struct protid *new_cred;
struct peropen *new_po;
struct iouser *user;
struct port_info *pt =
ports_lookup_port (diskfs_port_bucket, fsys, diskfs_control_class);
if (!pt)
return EOPNOTSUPP;
if (handle_len != sizeof *f)
{
ports_port_deref (pt);
return EINVAL;
}
f = (const union diskfs_fhandle *) handle;
err = diskfs_cached_lookup (f->data.cache_id, &node);
if (err)
{
ports_port_deref (pt);
return err;
}
if (node->dn_stat.st_gen != f->data.gen)
{
diskfs_nput (node);
ports_port_deref (pt);
return ESTALE;
}
err = iohelp_create_complex_iouser (&user, uids, nuids, gids, ngids);
if (err)
{
diskfs_nput (node);
ports_port_deref (pt);
return err;
}
flags = 0;
if (! fshelp_access (&node->dn_stat, S_IREAD, user))
flags |= O_READ;
if (! fshelp_access (&node->dn_stat, S_IEXEC, user))
flags |= O_EXEC;
if (! fshelp_access (&node->dn_stat, S_IWRITE, user)
&& ! S_ISDIR (node->dn_stat.st_mode)
&& ! diskfs_check_readonly ())
flags |= O_WRITE;
err = diskfs_make_peropen (node, flags, 0, &new_po);
if (! err)
{
err = diskfs_create_protid (new_po, user, &new_cred);
if (err)
diskfs_release_peropen (new_po);
}
iohelp_free_iouser (user);
diskfs_nput (node);
ports_port_deref (pt);
if (! err)
{
*file = ports_get_right (new_cred);
*file_type = MACH_MSG_TYPE_MAKE_SEND;
}
return err;
}
int
main (int argc, char **argv, char **envp)
{
mach_port_t boot;
error_t err;
void *genport;
process_t startup_port;
mach_port_t startup;
struct argp argp = { 0, 0, 0, "Hurd process server" };
argp_parse (&argp, argc, argv, 0, 0, 0);
initialize_version_info ();
err = task_get_bootstrap_port (mach_task_self (), &boot);
assert_perror (err);
if (boot == MACH_PORT_NULL)
error (2, 0, "proc server can only be run by init during boot");
proc_bucket = ports_create_bucket ();
proc_class = ports_create_class (0, 0);
generic_port_class = ports_create_class (0, 0);
exc_class = ports_create_class (exc_clean, 0);
ports_create_port (generic_port_class, proc_bucket,
sizeof (struct port_info), &genport);
generic_port = ports_get_right (genport);
/* Create the initial proc object for init (PID 1). */
init_proc = create_init_proc ();
/* Create the startup proc object for /hurd/init (PID 2). */
startup_proc = allocate_proc (MACH_PORT_NULL);
startup_proc->p_deadmsg = 1;
complete_proc (startup_proc, HURD_PID_STARTUP);
/* Create our own proc object. */
self_proc = allocate_proc (mach_task_self ());
assert (self_proc);
complete_proc (self_proc, HURD_PID_PROC);
startup_port = ports_get_send_right (startup_proc);
err = startup_procinit (boot, startup_port, &startup_proc->p_task,
&authserver, &_hurd_host_priv, &_hurd_device_master);
assert_perror (err);
mach_port_deallocate (mach_task_self (), startup_port);
mach_port_mod_refs (mach_task_self (), authserver, MACH_PORT_RIGHT_SEND, 1);
_hurd_port_set (&_hurd_ports[INIT_PORT_AUTH], authserver);
mach_port_deallocate (mach_task_self (), boot);
proc_death_notify (startup_proc);
add_proc_to_hash (startup_proc); /* Now that we have the task port. */
/* Set our own argv and envp locations. */
self_proc->p_argv = (vm_address_t) argv;
self_proc->p_envp = (vm_address_t) envp;
/* Give ourselves good scheduling performance, because we are so
important. */
err = increase_priority ();
if (err)
error (0, err, "Increasing priority failed");
#if 0
err = register_new_task_notification (_hurd_host_priv,
generic_port,
MACH_MSG_TYPE_MAKE_SEND);
if (err)
error (0, err, "Registering task notifications failed");
#endif
{
/* Get our stderr set up to print on the console, in case we have
to panic or something. */
mach_port_t cons;
error_t err;
err = device_open (_hurd_device_master, D_READ|D_WRITE, "console", &cons);
assert_perror (err);
stdin = mach_open_devstream (cons, "r");
stdout = stderr = mach_open_devstream (cons, "w");
mach_port_deallocate (mach_task_self (), cons);
}
startup = file_name_lookup (_SERVERS_STARTUP, 0, 0);
if (MACH_PORT_VALID (startup))
{
err = startup_essential_task (startup, mach_task_self (),
MACH_PORT_NULL, "proc", _hurd_host_priv);
if (err)
/* Due to the single-threaded nature of /hurd/startup, it can
only handle requests once the core server bootstrap has
completed. Therefore, it does not bind itself to
/servers/startup until it is ready. */
/* Fall back to abusing the message port lookup. */
startup_fallback = 1;
err = mach_port_deallocate (mach_task_self (), startup);
assert_perror (err);
}
else
/* Fall back to abusing the message port lookup. */
startup_fallback = 1;
while (1)
ports_manage_port_operations_multithread (proc_bucket,
message_demuxer,
0, 0, 0);
}
kern_return_t
trivfs_S_fsys_getroot (struct trivfs_control *cntl,
mach_port_t reply_port,
mach_msg_type_name_t reply_port_type,
mach_port_t dotdot,
uid_t *uids, size_t nuids,
uid_t *gids, size_t ngids,
int flags,
retry_type *do_retry,
char *retry_name,
mach_port_t *newpt,
mach_msg_type_name_t *newpttype)
{
int perms;
error_t err = 0;
mach_port_t new_realnode;
struct trivfs_protid *cred;
struct iouser *user;
if (!cntl)
return EOPNOTSUPP;
if (trivfs_getroot_hook)
{
err = (*trivfs_getroot_hook) (cntl, reply_port, reply_port_type, dotdot,
uids, nuids, gids, ngids, flags,
do_retry, retry_name, newpt, newpttype);
if (err != EAGAIN)
return err;
}
if ((flags & O_WRITE & trivfs_allow_open) != (flags & O_WRITE))
return EROFS;
if ((flags & (O_READ|O_WRITE|O_EXEC) & trivfs_allow_open)
!= (flags & (O_READ|O_WRITE|O_EXEC)))
return EACCES;
/* O_CREAT and O_EXCL are not meaningful here; O_NOLINK and O_NOTRANS
will only be useful when trivfs supports translators (which it doesn't
now). */
flags &= O_HURD;
flags &= ~(O_CREAT|O_EXCL|O_NOLINK|O_NOTRANS);
struct idvec idvec = {
.ids = uids,
.num = nuids,
.alloced = nuids,
};
if (_is_privileged (&idvec))
/* Privileged users should be given all our rights. */
err = io_duplicate (cntl->underlying, &new_realnode);
else
/* Non-privileged, restrict rights. */
err = io_restrict_auth (cntl->underlying,
&new_realnode, uids, nuids, gids, ngids);
if (err)
return err;
err = iohelp_create_complex_iouser (&user, uids, nuids, gids, ngids);
if (err)
return err;
/* Validate permissions. */
if (! trivfs_check_access_hook)
file_check_access (new_realnode, &perms);
else
(*trivfs_check_access_hook) (cntl, user, new_realnode, &perms);
if ((flags & (O_READ|O_WRITE|O_EXEC) & perms)
!= (flags & (O_READ|O_WRITE|O_EXEC)))
err = EACCES;
if (!err && trivfs_check_open_hook)
err = (*trivfs_check_open_hook) (cntl, user, flags);
if (!err)
{
if (! trivfs_open_hook)
{
err = trivfs_open (cntl, user, flags, new_realnode, &cred);
if (!err)
mach_port_deallocate (mach_task_self (), dotdot);
}
else
err = (*trivfs_open_hook) (cntl, user, dotdot, flags, new_realnode,
&cred);
}
if (err)
{
mach_port_deallocate (mach_task_self (), new_realnode);
iohelp_free_iouser (user);
}
else
{
*do_retry = FS_RETRY_NORMAL;
*retry_name = '\0';
*newpt = ports_get_right (cred);
*newpttype = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (cred);
}
return err;
}
int
main (int argc, char **argv, char **envp)
{
mach_port_t boot;
error_t err;
mach_port_t pset, psetcntl;
void *genport;
process_t startup_port;
struct argp argp = { 0, 0, 0, "Hurd process server" };
argp_parse (&argp, argc, argv, 0, 0, 0);
initialize_version_info ();
err = task_get_bootstrap_port (mach_task_self (), &boot);
assert_perror (err);
if (boot == MACH_PORT_NULL)
error (2, 0, "proc server can only be run by init during boot");
proc_bucket = ports_create_bucket ();
proc_class = ports_create_class (0, 0);
generic_port_class = ports_create_class (0, 0);
exc_class = ports_create_class (exc_clean, 0);
ports_create_port (generic_port_class, proc_bucket,
sizeof (struct port_info), &genport);
generic_port = ports_get_right (genport);
/* Create the initial proc object for init (PID 1). */
startup_proc = create_startup_proc ();
/* Create our own proc object (we are PID 0). */
self_proc = allocate_proc (mach_task_self ());
assert (self_proc);
complete_proc (self_proc, 0);
startup_port = ports_get_send_right (startup_proc);
err = startup_procinit (boot, startup_port, &startup_proc->p_task,
&authserver, &master_host_port, &master_device_port);
assert_perror (err);
mach_port_deallocate (mach_task_self (), startup_port);
mach_port_mod_refs (mach_task_self (), authserver, MACH_PORT_RIGHT_SEND, 1);
_hurd_port_set (&_hurd_ports[INIT_PORT_AUTH], authserver);
mach_port_deallocate (mach_task_self (), boot);
proc_death_notify (startup_proc);
add_proc_to_hash (startup_proc); /* Now that we have the task port. */
/* Set our own argv and envp locations. */
self_proc->p_argv = (vm_address_t) argv;
self_proc->p_envp = (vm_address_t) envp;
/* Give ourselves good scheduling performance, because we are so
important. */
err = thread_get_assignment (mach_thread_self (), &pset);
assert_perror (err);
err = host_processor_set_priv (master_host_port, pset, &psetcntl);
assert_perror (err);
thread_max_priority (mach_thread_self (), psetcntl, 0);
assert_perror (err);
err = task_priority (mach_task_self (), 2, 1);
assert_perror (err);
mach_port_deallocate (mach_task_self (), pset);
mach_port_deallocate (mach_task_self (), psetcntl);
{
/* Get our stderr set up to print on the console, in case we have
to panic or something. */
mach_port_t cons;
error_t err;
err = device_open (master_device_port, D_READ|D_WRITE, "console", &cons);
assert_perror (err);
stdin = mach_open_devstream (cons, "r");
stdout = stderr = mach_open_devstream (cons, "w");
mach_port_deallocate (mach_task_self (), cons);
}
while (1)
ports_manage_port_operations_multithread (proc_bucket,
message_demuxer,
0, 0, 0);
}
/* Receive data from a socket, possibly including Mach ports. */
error_t
S_socket_recv (struct sock_user *user,
mach_port_t *addr, mach_msg_type_name_t *addr_type,
int in_flags,
char **data, size_t *data_len,
mach_port_t **ports, mach_msg_type_name_t *ports_type,
size_t *num_ports,
char **control, size_t *control_len,
int *out_flags, size_t amount)
{
error_t err;
unsigned flags;
struct pipe *pipe;
void *source_addr = NULL;
if (!user)
return EOPNOTSUPP;
if (in_flags & MSG_OOB)
/* BSD local sockets don't support OOB data. */
return EINVAL; /* XXX */
/* Fill in the pipe FLAGS from any corresponding ones in IN_FLAGS. */
flags = in_flags & MSG_PEEK;
err = sock_acquire_read_pipe (user->sock, &pipe);
if (err == EPIPE)
/* EOF */
{
*data_len = 0;
if (num_ports)
*num_ports = 0;
if (control_len)
*control_len = 0;
}
else if (!err)
{
err =
pipe_recv (pipe, user->sock->flags & PFLOCAL_SOCK_NONBLOCK, &flags,
&source_addr, data, data_len, amount,
control, control_len, ports, num_ports);
pipe_release_reader (pipe);
}
if (!err)
/* Setup mach ports for return. */
{
*addr_type = MACH_MSG_TYPE_MAKE_SEND;
*ports_type = MACH_MSG_TYPE_MOVE_SEND;
if (source_addr)
{
*addr = ports_get_right (source_addr);
ports_port_deref (source_addr); /* since get_right has one too. */
}
else
*addr = MACH_PORT_NULL;
}
*out_flags = 0;
return err;
}
kern_return_t
trivfs_S_dir_lookup (struct trivfs_protid *cred,
mach_port_t reply, mach_msg_type_name_t reply_type,
char *filename,
int flags,
mode_t mode,
retry_type *retry_type,
char *retry_name,
mach_port_t *retrypt,
mach_msg_type_name_t *retrypt_type)
{
int perms;
error_t err;
struct trivfs_protid *newcred;
if (!cred)
return EOPNOTSUPP;
if (filename[0])
return ENOTDIR;
/* This is a null-pathname "reopen" call; do the right thing. */
/* Burn off flags we don't actually implement */
flags &= O_HURD;
flags &= ~(O_CREAT|O_EXCL|O_NOLINK|O_NOTRANS);
/* Validate permissions */
if (! trivfs_check_access_hook)
file_check_access (cred->realnode, &perms);
else
(*trivfs_check_access_hook) (cred->po->cntl, cred->user,
cred->realnode, &perms);
if ((flags & (O_READ|O_WRITE|O_EXEC) & perms)
!= (flags & (O_READ|O_WRITE|O_EXEC)))
return EACCES;
/* Execute the open */
err = 0;
if (trivfs_check_open_hook)
err = (*trivfs_check_open_hook) (cred->po->cntl, cred->user, flags);
if (!err)
{
struct iouser *user;
err = iohelp_dup_iouser (&user, cred->user);
if (err)
return err;
err = trivfs_open (cred->po->cntl, user, flags,
cred->realnode, &newcred);
if (err)
iohelp_free_iouser (user);
else
mach_port_mod_refs (mach_task_self (), cred->realnode,
MACH_PORT_RIGHT_SEND, +1);
}
if (err)
return err;
*retry_type = FS_RETRY_NORMAL;
*retry_name = '\0';
*retrypt = ports_get_right (newcred);
*retrypt_type = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (newcred);
return 0;
}