+++ /dev/null
-/*
- * Copyright (c) 1999-2005 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_APACHE_LICENSE_HEADER_START@
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @APPLE_APACHE_LICENSE_HEADER_END@
- */
-
-#include "config.h"
-#include "launch.h"
-#include "launch_priv.h"
-#include "bootstrap.h"
-#include "bootstrap_priv.h"
-#include "vproc.h"
-#include "vproc_priv.h"
-
-#include <mach/mach.h>
-#include <mach/vm_map.h>
-#include <sys/types.h>
-#include <sys/syslog.h>
-#include <sys/stat.h>
-#include <pthread.h>
-
-#include "protocol_vproc.h"
-
-kern_return_t
-bootstrap_create_server(mach_port_t bp, cmd_t server_cmd, uid_t server_uid, boolean_t on_demand, mach_port_t *server_port)
-{
- kern_return_t kr;
-
- kr = vproc_mig_create_server(bp, server_cmd, server_uid, on_demand, server_port);
-
- if (kr == VPROC_ERR_TRY_PER_USER) {
- mach_port_t puc;
-
- if (vproc_mig_lookup_per_user_context(bp, 0, &puc) == 0) {
- kr = vproc_mig_create_server(puc, server_cmd, server_uid, on_demand, server_port);
- mach_port_deallocate(mach_task_self(), puc);
- }
- }
-
- return kr;
-}
-
-kern_return_t
-bootstrap_subset(mach_port_t bp, mach_port_t requestor_port, mach_port_t *subset_port)
-{
- return vproc_mig_subset(bp, requestor_port, subset_port);
-}
-
-kern_return_t
-bootstrap_unprivileged(mach_port_t bp, mach_port_t *unpriv_port)
-{
- kern_return_t kr;
-
- *unpriv_port = MACH_PORT_NULL;
-
- kr = mach_port_mod_refs(mach_task_self(), bp, MACH_PORT_RIGHT_SEND, 1);
-
- if (kr == KERN_SUCCESS) {
- *unpriv_port = bp;
- }
-
- return kr;
-}
-
-kern_return_t
-bootstrap_parent(mach_port_t bp, mach_port_t *parent_port)
-{
- return vproc_mig_parent(bp, parent_port);
-}
-
-kern_return_t
-bootstrap_register(mach_port_t bp, name_t service_name, mach_port_t sp)
-{
- return bootstrap_register2(bp, service_name, sp, 0);
-}
-
-kern_return_t
-bootstrap_register2(mach_port_t bp, name_t service_name, mach_port_t sp, uint64_t flags)
-{
- kern_return_t kr = vproc_mig_register2(bp, service_name, sp, flags);
-
- if (kr == VPROC_ERR_TRY_PER_USER) {
- mach_port_t puc;
-
- if (vproc_mig_lookup_per_user_context(bp, 0, &puc) == 0) {
- kr = vproc_mig_register2(puc, service_name, sp, flags);
- mach_port_deallocate(mach_task_self(), puc);
- }
- }
-
- return kr;
-}
-
-kern_return_t
-bootstrap_create_service(mach_port_t bp, name_t service_name, mach_port_t *sp)
-{
- kern_return_t kr;
-
- if ((kr = bootstrap_check_in(bp, service_name, sp))) {
- return kr;
- }
-
- if ((kr = mach_port_mod_refs(mach_task_self(), *sp, MACH_PORT_RIGHT_RECEIVE, -1))) {
- return kr;
- }
-
- return bootstrap_look_up(bp, service_name, sp);
-}
-
-kern_return_t
-bootstrap_check_in(mach_port_t bp, const name_t service_name, mach_port_t *sp)
-{
- return vproc_mig_check_in2(bp, (char *)service_name, sp, 0);
-}
-
-kern_return_t
-bootstrap_check_in2(mach_port_t bp, const name_t service_name, mach_port_t *sp, uint64_t flags)
-{
- return vproc_mig_check_in2(bp, (char *)service_name, sp, flags);
-}
-
-kern_return_t
-bootstrap_look_up_per_user(mach_port_t bp, const name_t service_name, uid_t target_user, mach_port_t *sp)
-{
- audit_token_t au_tok;
- kern_return_t kr;
- mach_port_t puc;
-
- /* See rdar://problem/4890134. */
-
- if ((kr = vproc_mig_lookup_per_user_context(bp, target_user, &puc)) != 0) {
- return kr;
- }
-
- if( !service_name ) {
- *sp = puc;
- } else {
- kr = vproc_mig_look_up2(puc, (char *)service_name, sp, &au_tok, 0, 0);
- mach_port_deallocate(mach_task_self(), puc);
- }
-
- return kr;
-}
-
-kern_return_t
-bootstrap_lookup_children(mach_port_t bp, mach_port_array_t *children, name_array_t *names, bootstrap_property_array_t *properties, mach_msg_type_number_t *n_children)
-{
- mach_msg_type_number_t junk = 0;
- return vproc_mig_lookup_children(bp, children, &junk, names, n_children, properties, &junk);
-}
-
-kern_return_t
-bootstrap_look_up(mach_port_t bp, const name_t service_name, mach_port_t *sp)
-{
- return bootstrap_look_up2(bp, service_name, sp, 0, 0);
-}
-
-kern_return_t
-bootstrap_look_up2(mach_port_t bp, const name_t service_name, mach_port_t *sp, pid_t target_pid, uint64_t flags)
-{
- static pthread_mutex_t bslu2_lock = PTHREAD_MUTEX_INITIALIZER;
- static mach_port_t prev_bp;
- static mach_port_t prev_sp;
- static name_t prev_name;
- audit_token_t au_tok;
- bool per_pid_lookup = flags & BOOTSTRAP_PER_PID_SERVICE;
- bool privileged_server_lookup = flags & BOOTSTRAP_PRIVILEGED_SERVER;
- kern_return_t kr = 0;
- mach_port_t puc;
-
- pthread_mutex_lock(&bslu2_lock);
-
- if (per_pid_lookup || privileged_server_lookup) {
- goto skip_cache;
- }
-
- if (prev_sp) {
- if ((bp == prev_bp) && (strncmp(prev_name, service_name, sizeof(name_t)) == 0)
- && (mach_port_mod_refs(mach_task_self(), prev_sp, MACH_PORT_RIGHT_SEND, 1) == 0)) {
- *sp = prev_sp;
- goto out;
- } else {
- mach_port_deallocate(mach_task_self(), prev_sp);
- prev_sp = 0;
- }
- }
-
-skip_cache:
- if ((kr = vproc_mig_look_up2(bp, (char *)service_name, sp, &au_tok, target_pid, flags)) != VPROC_ERR_TRY_PER_USER) {
- goto out;
- }
-
- if ((kr = vproc_mig_lookup_per_user_context(bp, 0, &puc)) != 0) {
- goto out;
- }
-
- kr = vproc_mig_look_up2(puc, (char *)service_name, sp, &au_tok, target_pid, flags);
- mach_port_deallocate(mach_task_self(), puc);
-
-out:
- if (!(per_pid_lookup || privileged_server_lookup) && kr == 0 && prev_sp == 0 && mach_port_mod_refs(mach_task_self(), *sp, MACH_PORT_RIGHT_SEND, 1) == 0) {
- /* We're going to hold on to a send right as a MRU cache */
- prev_bp = bp;
- prev_sp = *sp;
- strlcpy(prev_name, service_name, sizeof(name_t));
- }
-
- if ((kr == 0) && privileged_server_lookup) {
- uid_t server_euid;
-
- /*
- * The audit token magic is dependent on the per-user launchd
- * forwarding MIG requests to the root launchd when it cannot
- * find the answer locally.
- */
-
- /* This API should be in Libsystem, but is not */
- //audit_token_to_au32(au_tok, NULL, &server_euid, NULL, NULL, NULL, NULL, NULL, NULL);
-
- server_euid = au_tok.val[1];
-
- if (server_euid) {
- mach_port_deallocate(mach_task_self(), *sp);
- kr = BOOTSTRAP_NOT_PRIVILEGED;
- }
- }
- /* If performance becomes a problem, we should restructure this. */
- pthread_mutex_unlock(&bslu2_lock);
-
- return kr;
-}
-
-kern_return_t
-bootstrap_status(mach_port_t bp, name_t service_name, bootstrap_status_t *service_active)
-{
- kern_return_t kr;
- mach_port_t p;
-
- if ((kr = bootstrap_look_up(bp, service_name, &p))) {
- return kr;
- }
-
- mach_port_deallocate(mach_task_self(), p);
- *service_active = BOOTSTRAP_STATUS_ACTIVE;
-
- if (bootstrap_check_in(bp, service_name, &p) == BOOTSTRAP_SUCCESS) {
- mach_port_mod_refs(mach_task_self(), p, MACH_PORT_RIGHT_RECEIVE, -1);
- *service_active = BOOTSTRAP_STATUS_ON_DEMAND;
- }
-
- return BOOTSTRAP_SUCCESS;
-}
-
-kern_return_t
-bootstrap_info(mach_port_t bp,
- name_array_t *service_names, mach_msg_type_number_t *service_namesCnt,
- name_array_t *service_jobs, mach_msg_type_number_t *service_jobsCnt,
- bootstrap_status_array_t *service_active, mach_msg_type_number_t *service_activeCnt,
- uint64_t flags)
-{
- return vproc_mig_info(bp, service_names, service_namesCnt, service_jobs, service_jobsCnt, service_active, service_activeCnt, flags);
-}
-
-const char *
-bootstrap_strerror(kern_return_t r)
-{
- switch (r) {
- case BOOTSTRAP_SUCCESS:
- return "Success";
- case BOOTSTRAP_NOT_PRIVILEGED:
- return "Permission denied";
- case BOOTSTRAP_NAME_IN_USE:
- case BOOTSTRAP_SERVICE_ACTIVE:
- return "Service name already exists";
- case BOOTSTRAP_UNKNOWN_SERVICE:
- return "Unknown service name";
- case BOOTSTRAP_BAD_COUNT:
- return "Too many lookups were requested in one request";
- case BOOTSTRAP_NO_MEMORY:
- return "Out of memory";
- default:
- return mach_error_string(r);
- }
-}
projects / apple / launchd.git / blobdiff