diff options
Diffstat (limited to 'threadproc/beos/proc.c')
| -rw-r--r-- | threadproc/beos/proc.c | 454 |
1 files changed, 454 insertions, 0 deletions
diff --git a/threadproc/beos/proc.c b/threadproc/beos/proc.c new file mode 100644 index 0000000..e369808 --- /dev/null +++ b/threadproc/beos/proc.c @@ -0,0 +1,454 @@ +/* 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; +} + +APR_DECLARE(apr_status_t) apr_procattr_perms_set_register(apr_procattr_t *attr, + apr_perms_setfn_t *perms_set_fn, + void *data, + apr_fileperms_t perms) +{ + return APR_ENOTIMPL; +} |