420 lines
13 KiB
C
420 lines
13 KiB
C
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/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "apr_arch_threadproc.h"
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#include "apr_strings.h"
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struct send_pipe {
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int in;
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int out;
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int err;
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};
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APR_DECLARE(apr_status_t) apr_procattr_create(apr_procattr_t **new, apr_pool_t *pool)
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{
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(*new) = (apr_procattr_t *)apr_palloc(pool,
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sizeof(apr_procattr_t));
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if ((*new) == NULL) {
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return APR_ENOMEM;
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}
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(*new)->pool = pool;
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(*new)->parent_in = NULL;
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(*new)->child_in = NULL;
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(*new)->parent_out = NULL;
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(*new)->child_out = NULL;
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(*new)->parent_err = NULL;
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(*new)->child_err = NULL;
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(*new)->currdir = NULL;
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(*new)->cmdtype = APR_PROGRAM;
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(*new)->detached = 0;
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_procattr_io_set(apr_procattr_t *attr, apr_int32_t in,
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apr_int32_t out, apr_int32_t err)
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{
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apr_status_t status;
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if (in != 0) {
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if ((status = apr_file_pipe_create(&attr->child_in, &attr->parent_in,
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attr->pool)) != APR_SUCCESS) {
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return status;
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}
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switch (in) {
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case APR_FULL_BLOCK:
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apr_file_pipe_timeout_set(attr->child_in, -1);
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apr_file_pipe_timeout_set(attr->parent_in, -1);
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break;
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case APR_PARENT_BLOCK:
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apr_file_pipe_timeout_set(attr->child_in, -1);
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break;
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case APR_CHILD_BLOCK:
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apr_file_pipe_timeout_set(attr->parent_in, -1);
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break;
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default:
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break;
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}
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}
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if (out) {
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if ((status = apr_file_pipe_create(&attr->parent_out, &attr->child_out,
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attr->pool)) != APR_SUCCESS) {
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return status;
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}
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switch (out) {
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case APR_FULL_BLOCK:
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apr_file_pipe_timeout_set(attr->child_out, -1);
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apr_file_pipe_timeout_set(attr->parent_out, -1);
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break;
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case APR_PARENT_BLOCK:
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apr_file_pipe_timeout_set(attr->child_out, -1);
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break;
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case APR_CHILD_BLOCK:
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apr_file_pipe_timeout_set(attr->parent_out, -1);
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break;
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default:
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break;
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}
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}
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if (err) {
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if ((status = apr_file_pipe_create(&attr->parent_err, &attr->child_err,
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attr->pool)) != APR_SUCCESS) {
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return status;
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}
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switch (err) {
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case APR_FULL_BLOCK:
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apr_file_pipe_timeout_set(attr->child_err, -1);
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apr_file_pipe_timeout_set(attr->parent_err, -1);
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break;
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case APR_PARENT_BLOCK:
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apr_file_pipe_timeout_set(attr->child_err, -1);
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break;
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case APR_CHILD_BLOCK:
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apr_file_pipe_timeout_set(attr->parent_err, -1);
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break;
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default:
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break;
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}
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}
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_procattr_dir_set(apr_procattr_t *attr,
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const char *dir)
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{
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char * cwd;
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if (dir[0] != '/') {
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cwd = (char*)malloc(sizeof(char) * PATH_MAX);
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getcwd(cwd, PATH_MAX);
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attr->currdir = (char *)apr_pstrcat(attr->pool, cwd, "/", dir, NULL);
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free(cwd);
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} else {
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attr->currdir = (char *)apr_pstrdup(attr->pool, dir);
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}
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if (attr->currdir) {
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return APR_SUCCESS;
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}
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return APR_ENOMEM;
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}
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APR_DECLARE(apr_status_t) apr_procattr_cmdtype_set(apr_procattr_t *attr,
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apr_cmdtype_e cmd)
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{
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attr->cmdtype = cmd;
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_procattr_detach_set(apr_procattr_t *attr, apr_int32_t detach)
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{
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attr->detached = detach;
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_proc_fork(apr_proc_t *proc, apr_pool_t *pool)
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{
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int pid;
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if ((pid = fork()) < 0) {
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return errno;
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}
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else if (pid == 0) {
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/* This is really ugly...
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* The semantics of BeOS's fork() are that areas (used for shared
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* memory) get COW'd :-( The only way we can make shared memory
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* work across fork() is therefore to find any areas that have
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* been created and then clone them into our address space.
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* Thankfully only COW'd areas have the lock variable set at
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* anything but 0, so we can use that to find the areas we need to
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* copy. Of course what makes it even worse is that the loop through
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* the area's will go into an infinite loop, eating memory and then
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* eventually segfault unless we know when we reach then end of the
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* "original" areas and stop. Why? Well, we delete the area and then
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* add another to the end of the list...
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*/
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area_info ai;
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int32 cookie = 0;
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area_id highest = 0;
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while (get_next_area_info(0, &cookie, &ai) == B_OK)
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if (ai.area > highest)
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highest = ai.area;
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cookie = 0;
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while (get_next_area_info(0, &cookie, &ai) == B_OK) {
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if (ai.area > highest)
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break;
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if (ai.lock > 0) {
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area_id original = find_area(ai.name);
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delete_area(ai.area);
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clone_area(ai.name, &ai.address, B_CLONE_ADDRESS,
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ai.protection, original);
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}
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}
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proc->pid = pid;
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proc->in = NULL;
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proc->out = NULL;
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proc->err = NULL;
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return APR_INCHILD;
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}
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proc->pid = pid;
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proc->in = NULL;
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proc->out = NULL;
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proc->err = NULL;
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return APR_INPARENT;
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}
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APR_DECLARE(apr_status_t) apr_procattr_child_errfn_set(apr_procattr_t *attr,
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apr_child_errfn_t *errfn)
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{
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/* won't ever be called on this platform, so don't save the function pointer */
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_procattr_error_check_set(apr_procattr_t *attr,
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apr_int32_t chk)
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{
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/* won't ever be used on this platform, so don't save the flag */
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_procattr_addrspace_set(apr_procattr_t *attr,
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apr_int32_t addrspace)
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{
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/* won't ever be used on this platform, so don't save the flag */
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_proc_create(apr_proc_t *new, const char *progname,
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const char * const *args,
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const char * const *env,
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apr_procattr_t *attr,
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apr_pool_t *pool)
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{
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int i=0,nargs=0;
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char **newargs = NULL;
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thread_id newproc, sender;
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struct send_pipe *sp;
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char * dir = NULL;
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sp = (struct send_pipe *)apr_palloc(pool, sizeof(struct send_pipe));
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new->in = attr->parent_in;
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new->err = attr->parent_err;
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new->out = attr->parent_out;
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sp->in = attr->child_in ? attr->child_in->filedes : -1;
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sp->out = attr->child_out ? attr->child_out->filedes : -1;
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sp->err = attr->child_err ? attr->child_err->filedes : -1;
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i = 0;
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while (args && args[i]) {
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i++;
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}
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newargs = (char**)malloc(sizeof(char *) * (i + 4));
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newargs[0] = strdup("/boot/home/config/bin/apr_proc_stub");
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if (attr->currdir == NULL) {
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/* we require the directory , so use a temp. variable */
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dir = malloc(sizeof(char) * PATH_MAX);
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getcwd(dir, PATH_MAX);
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newargs[1] = strdup(dir);
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free(dir);
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} else {
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newargs[1] = strdup(attr->currdir);
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}
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newargs[2] = strdup(progname);
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i=0;nargs = 3;
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while (args && args[i]) {
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newargs[nargs] = strdup(args[i]);
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i++;nargs++;
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}
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newargs[nargs] = NULL;
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/* ### we should be looking at attr->cmdtype in here... */
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newproc = load_image(nargs, (const char**)newargs, (const char**)env);
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/* load_image copies the data so now we can free it... */
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while (--nargs >= 0)
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free (newargs[nargs]);
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free(newargs);
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if (newproc < B_NO_ERROR) {
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return errno;
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}
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resume_thread(newproc);
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if (attr->child_in) {
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apr_file_close(attr->child_in);
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}
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if (attr->child_out) {
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apr_file_close(attr->child_out);
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}
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if (attr->child_err) {
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apr_file_close(attr->child_err);
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}
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send_data(newproc, 0, (void*)sp, sizeof(struct send_pipe));
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new->pid = newproc;
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/* before we go charging on we need the new process to get to a
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* certain point. When it gets there it'll let us know and we
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* can carry on. */
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receive_data(&sender, (void*)NULL,0);
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return APR_SUCCESS;
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}
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APR_DECLARE(apr_status_t) apr_proc_wait_all_procs(apr_proc_t *proc,
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int *exitcode,
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apr_exit_why_e *exitwhy,
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apr_wait_how_e waithow,
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apr_pool_t *p)
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{
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proc->pid = -1;
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return apr_proc_wait(proc, exitcode, exitwhy, waithow);
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}
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APR_DECLARE(apr_status_t) apr_proc_wait(apr_proc_t *proc,
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int *exitcode,
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apr_exit_why_e *exitwhy,
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apr_wait_how_e waithow)
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{
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pid_t pstatus;
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int waitpid_options = WUNTRACED;
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int exit_int;
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int ignore;
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apr_exit_why_e ignorewhy;
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if (exitcode == NULL) {
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exitcode = &ignore;
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}
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if (exitwhy == NULL) {
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exitwhy = &ignorewhy;
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}
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if (waithow != APR_WAIT) {
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waitpid_options |= WNOHANG;
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}
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if ((pstatus = waitpid(proc->pid, &exit_int, waitpid_options)) > 0) {
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proc->pid = pstatus;
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if (WIFEXITED(exit_int)) {
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*exitwhy = APR_PROC_EXIT;
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*exitcode = WEXITSTATUS(exit_int);
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}
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else if (WIFSIGNALED(exit_int)) {
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*exitwhy = APR_PROC_SIGNAL;
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*exitcode = WTERMSIG(exit_int);
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}
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else {
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/* unexpected condition */
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return APR_EGENERAL;
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}
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return APR_CHILD_DONE;
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}
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else if (pstatus == 0) {
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return APR_CHILD_NOTDONE;
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}
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return errno;
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}
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APR_DECLARE(apr_status_t) apr_procattr_child_in_set(apr_procattr_t *attr, apr_file_t *child_in,
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apr_file_t *parent_in)
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{
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if (attr->child_in == NULL && attr->parent_in == NULL)
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apr_file_pipe_create(&attr->child_in, &attr->parent_in, attr->pool);
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if (child_in != NULL)
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apr_file_dup(&attr->child_in, child_in, attr->pool);
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if (parent_in != NULL)
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||
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|
apr_file_dup(&attr->parent_in, parent_in, attr->pool);
|
||
|
|
|
||
|
|
return APR_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
APR_DECLARE(apr_status_t) apr_procattr_child_out_set(apr_procattr_t *attr, apr_file_t *child_out,
|
||
|
|
apr_file_t *parent_out)
|
||
|
|
{
|
||
|
|
if (attr->child_out == NULL && attr->parent_out == NULL)
|
||
|
|
apr_file_pipe_create(&attr->child_out, &attr->parent_out, attr->pool);
|
||
|
|
|
||
|
|
if (child_out != NULL)
|
||
|
|
apr_file_dup(&attr->child_out, child_out, attr->pool);
|
||
|
|
|
||
|
|
if (parent_out != NULL)
|
||
|
|
apr_file_dup(&attr->parent_out, parent_out, attr->pool);
|
||
|
|
|
||
|
|
return APR_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
APR_DECLARE(apr_status_t) apr_procattr_child_err_set(apr_procattr_t *attr, apr_file_t *child_err,
|
||
|
|
apr_file_t *parent_err)
|
||
|
|
{
|
||
|
|
if (attr->child_err == NULL && attr->parent_err == NULL)
|
||
|
|
apr_file_pipe_create(&attr->child_err, &attr->parent_err, attr->pool);
|
||
|
|
|
||
|
|
if (child_err != NULL)
|
||
|
|
apr_file_dup(&attr->child_err, child_err, attr->pool);
|
||
|
|
|
||
|
|
if (parent_err != NULL)
|
||
|
|
apr_file_dup(&attr->parent_err, parent_err, attr->pool);
|
||
|
|
|
||
|
|
return APR_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
APR_DECLARE(apr_status_t) apr_procattr_limit_set(apr_procattr_t *attr, apr_int32_t what,
|
||
|
|
void *limit)
|
||
|
|
{
|
||
|
|
return APR_ENOTIMPL;
|
||
|
|
}
|
||
|
|
|
||
|
|
APR_DECLARE(apr_status_t) apr_procattr_user_set(apr_procattr_t *attr,
|
||
|
|
const char *username,
|
||
|
|
const char *password)
|
||
|
|
{
|
||
|
|
return APR_ENOTIMPL;
|
||
|
|
}
|
||
|
|
|
||
|
|
APR_DECLARE(apr_status_t) apr_procattr_group_set(apr_procattr_t *attr,
|
||
|
|
const char *groupname)
|
||
|
|
{
|
||
|
|
return APR_ENOTIMPL;
|
||
|
|
}
|