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DEFINITIONS
This source file includes following definitions.
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
- APR_DECLARE
/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
#include "apr_arch_threadproc.h"
#include "apr_strings.h"
/* Heavy on no'ops, here's what we want to pass if there is APR_NO_FILE
* requested for a specific child handle;
*/
static apr_file_t no_file = { NULL, -1, };
struct send_pipe {
int in;
int out;
int err;
};
APR_DECLARE(apr_status_t) apr_procattr_create(apr_procattr_t **new, apr_pool_t *pool)
{
(*new) = (apr_procattr_t *)apr_palloc(pool,
sizeof(apr_procattr_t));
if ((*new) == NULL) {
return APR_ENOMEM;
}
(*new)->pool = pool;
(*new)->parent_in = NULL;
(*new)->child_in = NULL;
(*new)->parent_out = NULL;
(*new)->child_out = NULL;
(*new)->parent_err = NULL;
(*new)->child_err = NULL;
(*new)->currdir = NULL;
(*new)->cmdtype = APR_PROGRAM;
(*new)->detached = 0;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_io_set(apr_procattr_t *attr,
apr_int32_t in,
apr_int32_t out,
apr_int32_t err)
{
apr_status_t rv;
if ((in != APR_NO_PIPE) && (in != APR_NO_FILE)) {
/* APR_CHILD_BLOCK maps to APR_WRITE_BLOCK, while
* APR_PARENT_BLOCK maps to APR_READ_BLOCK, so transpose
* the CHILD/PARENT blocking flags for the stdin pipe.
* stdout/stderr map to the correct mode by default.
*/
if (in == APR_CHILD_BLOCK)
in = APR_READ_BLOCK;
else if (in == APR_PARENT_BLOCK)
in = APR_WRITE_BLOCK;
if ((rv = apr_file_pipe_create_ex(&attr->child_in, &attr->parent_in,
in, attr->pool)) == APR_SUCCESS)
rv = apr_file_inherit_unset(attr->parent_in);
if (rv != APR_SUCCESS)
return rv;
}
else if (in == APR_NO_FILE)
attr->child_in = &no_file;
if ((out != APR_NO_PIPE) && (out != APR_NO_FILE)) {
if ((rv = apr_file_pipe_create_ex(&attr->parent_out, &attr->child_out,
out, attr->pool)) == APR_SUCCESS)
rv = apr_file_inherit_unset(attr->parent_out);
if (rv != APR_SUCCESS)
return rv;
}
else if (out == APR_NO_FILE)
attr->child_out = &no_file;
if ((err != APR_NO_PIPE) && (err != APR_NO_FILE)) {
if ((rv = apr_file_pipe_create_ex(&attr->parent_err, &attr->child_err,
err, attr->pool)) != APR_SUCCESS)
rv = apr_file_inherit_unset(attr->parent_err);
if (rv != APR_SUCCESS)
return rv;
}
else if (err == APR_NO_FILE)
attr->child_err = &no_file;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_dir_set(apr_procattr_t *attr,
const char *dir)
{
char * cwd;
if (dir[0] != '/') {
cwd = (char*)malloc(sizeof(char) * PATH_MAX);
getcwd(cwd, PATH_MAX);
attr->currdir = (char *)apr_pstrcat(attr->pool, cwd, "/", dir, NULL);
free(cwd);
} else {
attr->currdir = (char *)apr_pstrdup(attr->pool, dir);
}
if (attr->currdir) {
return APR_SUCCESS;
}
return APR_ENOMEM;
}
APR_DECLARE(apr_status_t) apr_procattr_cmdtype_set(apr_procattr_t *attr,
apr_cmdtype_e cmd)
{
attr->cmdtype = cmd;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_detach_set(apr_procattr_t *attr, apr_int32_t detach)
{
attr->detached = detach;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_proc_fork(apr_proc_t *proc, apr_pool_t *pool)
{
int pid;
if ((pid = fork()) < 0) {
return errno;
}
else if (pid == 0) {
/* This is really ugly...
* The semantics of BeOS's fork() are that areas (used for shared
* memory) get COW'd :-( The only way we can make shared memory
* work across fork() is therefore to find any areas that have
* been created and then clone them into our address space.
* Thankfully only COW'd areas have the lock variable set at
* anything but 0, so we can use that to find the areas we need to
* copy. Of course what makes it even worse is that the loop through
* the area's will go into an infinite loop, eating memory and then
* eventually segfault unless we know when we reach then end of the
* "original" areas and stop. Why? Well, we delete the area and then
* add another to the end of the list...
*/
area_info ai;
int32 cookie = 0;
area_id highest = 0;
while (get_next_area_info(0, &cookie, &ai) == B_OK)
if (ai.area > highest)
highest = ai.area;
cookie = 0;
while (get_next_area_info(0, &cookie, &ai) == B_OK) {
if (ai.area > highest)
break;
if (ai.lock > 0) {
area_id original = find_area(ai.name);
delete_area(ai.area);
clone_area(ai.name, &ai.address, B_CLONE_ADDRESS,
ai.protection, original);
}
}
proc->pid = pid;
proc->in = NULL;
proc->out = NULL;
proc->err = NULL;
return APR_INCHILD;
}
proc->pid = pid;
proc->in = NULL;
proc->out = NULL;
proc->err = NULL;
return APR_INPARENT;
}
APR_DECLARE(apr_status_t) apr_procattr_child_errfn_set(apr_procattr_t *attr,
apr_child_errfn_t *errfn)
{
/* won't ever be called on this platform, so don't save the function pointer */
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_error_check_set(apr_procattr_t *attr,
apr_int32_t chk)
{
/* won't ever be used on this platform, so don't save the flag */
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_procattr_addrspace_set(apr_procattr_t *attr,
apr_int32_t addrspace)
{
/* won't ever be used on this platform, so don't save the flag */
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_proc_create(apr_proc_t *new, const char *progname,
const char * const *args,
const char * const *env,
apr_procattr_t *attr,
apr_pool_t *pool)
{
int i=0,nargs=0;
char **newargs = NULL;
thread_id newproc, sender;
struct send_pipe *sp;
char * dir = NULL;
sp = (struct send_pipe *)apr_palloc(pool, sizeof(struct send_pipe));
new->in = attr->parent_in;
new->err = attr->parent_err;
new->out = attr->parent_out;
sp->in = attr->child_in ? attr->child_in->filedes : FILENO_STDIN;
sp->out = attr->child_out ? attr->child_out->filedes : FILENO_STDOUT;
sp->err = attr->child_err ? attr->child_err->filedes : FILENO_STDERR;
i = 0;
while (args && args[i]) {
i++;
}
newargs = (char**)malloc(sizeof(char *) * (i + 4));
newargs[0] = strdup("/boot/home/config/bin/apr_proc_stub");
if (attr->currdir == NULL) {
/* we require the directory , so use a temp. variable */
dir = malloc(sizeof(char) * PATH_MAX);
getcwd(dir, PATH_MAX);
newargs[1] = strdup(dir);
free(dir);
} else {
newargs[1] = strdup(attr->currdir);
}
newargs[2] = strdup(progname);
i=0;nargs = 3;
while (args && args[i]) {
newargs[nargs] = strdup(args[i]);
i++;nargs++;
}
newargs[nargs] = NULL;
/* ### we should be looking at attr->cmdtype in here... */
newproc = load_image(nargs, (const char**)newargs, (const char**)env);
/* load_image copies the data so now we can free it... */
while (--nargs >= 0)
free (newargs[nargs]);
free(newargs);
if (newproc < B_NO_ERROR) {
return errno;
}
resume_thread(newproc);
if (attr->child_in && (attr->child_in->filedes != -1)) {
apr_file_close(attr->child_in);
}
if (attr->child_out && (attr->child_in->filedes != -1)) {
apr_file_close(attr->child_out);
}
if (attr->child_err && (attr->child_in->filedes != -1)) {
apr_file_close(attr->child_err);
}
send_data(newproc, 0, (void*)sp, sizeof(struct send_pipe));
new->pid = newproc;
/* before we go charging on we need the new process to get to a
* certain point. When it gets there it'll let us know and we
* can carry on. */
receive_data(&sender, (void*)NULL,0);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_proc_wait_all_procs(apr_proc_t *proc,
int *exitcode,
apr_exit_why_e *exitwhy,
apr_wait_how_e waithow,
apr_pool_t *p)
{
proc->pid = -1;
return apr_proc_wait(proc, exitcode, exitwhy, waithow);
}
APR_DECLARE(apr_status_t) apr_proc_wait(apr_proc_t *proc,
int *exitcode,
apr_exit_why_e *exitwhy,
apr_wait_how_e waithow)
{
pid_t pstatus;
int waitpid_options = WUNTRACED;
int exit_int;
int ignore;
apr_exit_why_e ignorewhy;
if (exitcode == NULL) {
exitcode = &ignore;
}
if (exitwhy == NULL) {
exitwhy = &ignorewhy;
}
if (waithow != APR_WAIT) {
waitpid_options |= WNOHANG;
}
if ((pstatus = waitpid(proc->pid, &exit_int, waitpid_options)) > 0) {
proc->pid = pstatus;
if (WIFEXITED(exit_int)) {
*exitwhy = APR_PROC_EXIT;
*exitcode = WEXITSTATUS(exit_int);
}
else if (WIFSIGNALED(exit_int)) {
*exitwhy = APR_PROC_SIGNAL;
*exitcode = WTERMSIG(exit_int);
}
else {
/* unexpected condition */
return APR_EGENERAL;
}
return APR_CHILD_DONE;
}
else if (pstatus == 0) {
return APR_CHILD_NOTDONE;
}
return errno;
}
APR_DECLARE(apr_status_t) apr_procattr_child_in_set(apr_procattr_t *attr, apr_file_t *child_in,
apr_file_t *parent_in)
{
apr_status_t rv;
if (attr->child_in == NULL && attr->parent_in == NULL
&& child_in == NULL && parent_in == NULL)
if ((rv = apr_file_pipe_create(&attr->child_in, &attr->parent_in,
attr->pool)) == APR_SUCCESS)
rv = apr_file_inherit_unset(attr->parent_in);
if (child_in != NULL && rv == APR_SUCCESS) {
if (attr->child_in && (attr->child_in->filedes != -1))
rv = apr_file_dup2(attr->child_in, child_in, attr->pool);
else {
attr->child_in = NULL;
if ((rv = apr_file_dup(&attr->child_in, child_in, attr->pool))
== APR_SUCCESS)
rv = apr_file_inherit_set(attr->child_in);
}
if (parent_in != NULL && rv == APR_SUCCESS) {
rv = apr_file_dup(&attr->parent_in, parent_in, attr->pool);
return rv;
}
APR_DECLARE(apr_status_t) apr_procattr_child_out_set(apr_procattr_t *attr, apr_file_t *child_out,
apr_file_t *parent_out)
{
apr_status_t rv;
if (attr->child_out == NULL && attr->parent_out == NULL
&& child_out == NULL && parent_out == NULL)
if ((rv = apr_file_pipe_create(&attr->parent_out, &attr->child_out,
attr->pool)) == APR_SUCCESS)
rv = apr_file_inherit_unset(attr->parent_out);
if (child_out != NULL && rv == APR_SUCCESS) {
if (attr->child_out && (attr->child_out->filedes != -1))
rv = apr_file_dup2(attr->child_out, child_out, attr->pool);
else {
attr->child_out = NULL;
if ((rv = apr_file_dup(&attr->child_out, child_out, attr->pool))
== APR_SUCCESS)
rv = apr_file_inherit_set(attr->child_out);
}
}
if (parent_out != NULL && rv == APR_SUCCESS) {
rv = apr_file_dup(&attr->parent_out, parent_out, attr->pool);
return rv;
}
APR_DECLARE(apr_status_t) apr_procattr_child_err_set(apr_procattr_t *attr, apr_file_t *child_err,
apr_file_t *parent_err)
{
apr_status_t rv;
if (attr->child_err == NULL && attr->parent_err == NULL
&& child_err == NULL && parent_err == NULL)
if ((rv = apr_file_pipe_create(&attr->parent_err, &attr->child_err,
attr->pool)) == APR_SUCCESS)
rv = apr_file_inherit_unset(attr->parent_err);
if (child_err != NULL && rv == APR_SUCCESS) {
if (attr->child_err && (attr->child_err->filedes != -1))
rv = apr_file_dup2(attr->child_err, child_err, attr->pool);
else {
attr->child_err = NULL;
if ((rv = apr_file_dup(&attr->child_err, child_err, attr->pool))
== APR_SUCCESS)
rv = apr_file_inherit_set(attr->child_err);
}
}
if (parent_err != NULL && rv == APR_SUCCESS) {
rv = apr_file_dup(&attr->parent_err, parent_err, attr->pool);
return rv;
}
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;
}