/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as * applicable. * * 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. */#include "apr_arch_threadproc.h"#include "apr_strings.h"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 status;    if (in != 0) {        if ((status = apr_file_pipe_create(&attr->child_in, &attr->parent_in,                                    attr->pool)) != APR_SUCCESS) {            return status;        }        switch (in) {        case APR_FULL_BLOCK:            apr_file_pipe_timeout_set(attr->child_in, -1);            apr_file_pipe_timeout_set(attr->parent_in, -1);            break;        case APR_PARENT_BLOCK:            apr_file_pipe_timeout_set(attr->child_in, -1);            break;        case APR_CHILD_BLOCK:            apr_file_pipe_timeout_set(attr->parent_in, -1);            break;        default:            break;        }    }     if (out) {        if ((status = apr_file_pipe_create(&attr->parent_out, &attr->child_out,                                    attr->pool)) != APR_SUCCESS) {            return status;        }        switch (out) {        case APR_FULL_BLOCK:            apr_file_pipe_timeout_set(attr->child_out, -1);            apr_file_pipe_timeout_set(attr->parent_out, -1);                   break;        case APR_PARENT_BLOCK:            apr_file_pipe_timeout_set(attr->child_out, -1);            break;        case APR_CHILD_BLOCK:            apr_file_pipe_timeout_set(attr->parent_out, -1);            break;        default:            break;        }    }     if (err) {        if ((status = apr_file_pipe_create(&attr->parent_err, &attr->child_err,                                    attr->pool)) != APR_SUCCESS) {            return status;        }        switch (err) {        case APR_FULL_BLOCK:            apr_file_pipe_timeout_set(attr->child_err, -1);            apr_file_pipe_timeout_set(attr->parent_err, -1);            break;        case APR_PARENT_BLOCK:            apr_file_pipe_timeout_set(attr->child_err, -1);            break;        case APR_CHILD_BLOCK:            apr_file_pipe_timeout_set(attr->parent_err, -1);            break;        default:            break;        }    }     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  : -1;	sp->out = attr->child_out ? attr->child_out->filedes : -1;	sp->err = attr->child_err ? attr->child_err->filedes : -1;    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) {        apr_file_close(attr->child_in);    }    if (attr->child_out) {        apr_file_close(attr->child_out);    }    if (attr->child_err) {        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){    if (attr->child_in == NULL && attr->parent_in == NULL)        apr_file_pipe_create(&attr->child_in, &attr->parent_in, attr->pool);    if (child_in != NULL)        apr_file_dup(&attr->child_in, child_in, attr->pool);    if (parent_in != NULL)        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;}