diff options
Diffstat (limited to 'hurd')
| -rw-r--r-- | hurd/hurdauth.c | 123 | ||||
| -rw-r--r-- | hurd/hurdsig.c | 2 |
2 files changed, 116 insertions, 9 deletions
diff --git a/hurd/hurdauth.c b/hurd/hurdauth.c index c60b8d8..64c9db4 100644 --- a/hurd/hurdauth.c +++ b/hurd/hurdauth.c @@ -37,17 +37,124 @@ _S_msg_add_auth (mach_port_t me, { error_t err; auth_t newauth; + uid_t *genuids, *gengids, *auxuids, *auxgids; + mach_msg_type_number_t ngenuids, ngengids, nauxuids, nauxgids; + uid_t *newgenuids, *newgengids, *newauxuids, *newauxgids; + mach_msg_type_number_t nnewgenuids, nnewgengids, nnewauxuids, nnewauxgids; + + /* Create a list of ids and store it in NEWLISTP, length NEWLISTLEN. + Keep all the ids in EXIST (len NEXIST), adding in those from NEW + (len NNEW) which are not already there. */ + error_t make_list (uid_t **newlistp, mach_msg_type_number_t *newlistlen, + uid_t *exist, mach_msg_type_number_t nexist, + uid_t *new, mach_msg_type_number_t nnew) + { + error_t urp; + int i, j, k; + vm_size_t offset; + + urp = vm_allocate (mach_task_self (), (vm_address_t *) newlistp, + nexist + nnew * sizeof (uid_t), 1); + if (urp) + return urp; + + j = 0; + for (i = 0; i < nexist; i++) + (*newlistp)[j++] = exist[i]; + + for (i = 0; i < nnew; i++) + { + for (k = 0; k < nexist; k++) + if (exist[k] == new[i]) + break; + if (k < nexist) + continue; + + (*newlistp)[j++] = new[i]; + } + + offset = (round_page (nexist + nnew * sizeof (uid_t)) + - round_page (j * sizeof (uid_t))); + if (offset) + vm_deallocate (mach_task_self (), + (vm_address_t) (*newlistp + + (nexist + nnew * sizeof (uid_t))), + offset); + *newlistlen = j; + return 0; + } + + /* Find out what ids ADDAUTH refers to */ - if (err = __USEPORT (AUTH, - __auth_makeauth (port, - &addauth, MACH_MSG_TYPE_MOVE_SEND, 1, - NULL, 0, - NULL, 0, - NULL, 0, - NULL, 0, - &newauth))) + genuids = gengids = auxuids = auxgids = 0; + ngenuids = ngengids = nauxuids = nauxgids = 0; + err = __auth_getids (addauth, + &genuids, &ngenuids, + &auxuids, &nauxuids, + &gengids, &ngengids, + &auxgids, &nauxgids); + if (err) return err; + /* OR in these ids to what we already have, creating a new list. */ + + HURD_CRITICAL_BEGIN; + __mutex_lock (&_hurd_id.lock); + _hurd_check_ids (); + +#define MAKE(genaux,uidgid) \ + make_list (&new ## genaux ## uidgid ## s, \ + &nnew ## genaux ## uidgid ## s, \ + _hurd_id.genaux.uidgid ## s, \ + _hurd_id.genaux.n ## uidgid ## s, \ + genaux ## uidgid ## s, \ + n ## genaux ## uidgid ## s) + + err = MAKE (gen, uid); + if (!err) + MAKE (aux, uid); + if (!err) + MAKE (gen, gid); + if (!err) + MAKE (aux, gid); +#undef MAKE + + __mutex_unlock (&_hurd_id.lock); + HURD_CRITICAL_END; + + + /* Create the new auth port */ + + if (!err) + err = __USEPORT (AUTH, + __auth_makeauth (port, + &addauth, MACH_MSG_TYPE_MOVE_SEND, 1, + newgenuids, nnewgenuids, + newauxuids, nnewauxuids, + newgengids, nnewgengids, + newauxgids, nnewauxgids, + &newauth)); + +#define freeup(array, len) \ + if (array) \ + vm_deallocate (mach_task_self (), (vm_address_t) array, \ + len * sizeof (uid_t)); + + freeup (genuids, ngenuids); + freeup (auxuids, nauxuids); + freeup (gengids, ngengids); + freeup (auxgids, nauxgids); + freeup (newgenuids, nnewgenuids); + freeup (newauxuids, nnewauxuids); + freeup (newgengids, nnewgengids); + freeup (newauxgids, nnewauxgids); +#undef freeup + + if (err) + return err; + + /* And install it. */ + err = __setauth (newauth); __mach_port_deallocate (__mach_task_self (), newauth); if (err) diff --git a/hurd/hurdsig.c b/hurd/hurdsig.c index 592dc12..f50daa2 100644 --- a/hurd/hurdsig.c +++ b/hurd/hurdsig.c @@ -1194,7 +1194,7 @@ _hurdsig_init (void) err = __thread_create (__mach_task_self (), &_hurd_msgport_thread); assert_perror (err); - stacksize = __vm_page_size * 4; /* Small stack for signal thread. */ + stacksize = __vm_page_size * 8; /* Small stack for signal thread. */ err = __mach_setup_thread (__mach_task_self (), _hurd_msgport_thread, _hurd_msgport_receive, (vm_address_t *) &__hurd_sigthread_stack_base, |