| 0,0 → 1,187 |
|---|
| /* |
| * Copyright (c) 2006 Jakub Jermar |
| * Copyright (c) 2008 Jiri Svoboda |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup libc |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #include <task.h> |
| #include <ipc/ipc.h> |
| #include <ipc/loader.h> |
| #include <libc.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <async.h> |
| #include <errno.h> |
| #include <vfs/vfs.h> |
| |
| task_id_t task_get_id(void) |
| { |
| task_id_t task_id; |
| |
| (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
| |
| return task_id; |
| } |
| |
| static int task_spawn_loader(void) |
| { |
| int phone_id, rc; |
| |
| rc = __SYSCALL1(SYS_PROGRAM_SPAWN_LOADER, (sysarg_t) &phone_id); |
| if (rc != 0) |
| return rc; |
| |
| return phone_id; |
| } |
| |
| static int loader_set_args(int phone_id, const char *argv[]) |
| { |
| aid_t req; |
| ipc_call_t answer; |
| ipcarg_t rc; |
| |
| const char **ap; |
| char *dp; |
| char *arg_buf; |
| size_t buffer_size; |
| size_t len; |
| |
| /* |
| * Serialize the arguments into a single array. First |
| * compute size of the buffer needed. |
| */ |
| ap = argv; |
| buffer_size = 0; |
| while (*ap != NULL) { |
| buffer_size += strlen(*ap) + 1; |
| ++ap; |
| } |
| |
| arg_buf = malloc(buffer_size); |
| if (arg_buf == NULL) return ENOMEM; |
| |
| /* Now fill the buffer with null-terminated argument strings */ |
| ap = argv; |
| dp = arg_buf; |
| while (*ap != NULL) { |
| strcpy(dp, *ap); |
| dp += strlen(*ap) + 1; |
| |
| ++ap; |
| } |
| |
| /* Send serialized arguments to the loader */ |
| |
| req = async_send_0(phone_id, LOADER_SET_ARGS, &answer); |
| rc = ipc_data_write_start(phone_id, (void *)arg_buf, buffer_size); |
| if (rc != EOK) { |
| async_wait_for(req, NULL); |
| return rc; |
| } |
| |
| async_wait_for(req, &rc); |
| if (rc != EOK) return rc; |
| |
| /* Free temporary buffer */ |
| free(arg_buf); |
| |
| return EOK; |
| } |
| |
| /** Create a new task by running an executable from VFS. |
| * |
| * @param path pathname of the binary to execute |
| * @param argv command-line arguments |
| * @return ID of the newly created task or zero on error. |
| */ |
| task_id_t task_spawn(const char *path, const char *argv[]) |
| { |
| int phone_id; |
| ipc_call_t answer; |
| aid_t req; |
| int rc; |
| ipcarg_t retval; |
| |
| char *pa; |
| size_t pa_len; |
| |
| pa = absolutize(path, &pa_len); |
| if (!pa) |
| return 0; |
| |
| /* Spawn a program loader */ |
| phone_id = task_spawn_loader(); |
| if (phone_id < 0) |
| return 0; |
| |
| /* |
| * Say hello so that the loader knows the incoming connection's |
| * phone hash. |
| */ |
| rc = async_req_0_0(phone_id, LOADER_HELLO); |
| if (rc != EOK) |
| return 0; |
| |
| /* Send program pathname */ |
| req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer); |
| rc = ipc_data_write_start(phone_id, (void *)pa, pa_len); |
| if (rc != EOK) { |
| async_wait_for(req, NULL); |
| return 1; |
| } |
| |
| async_wait_for(req, &retval); |
| if (retval != EOK) |
| goto error; |
| |
| /* Send arguments */ |
| rc = loader_set_args(phone_id, argv); |
| if (rc != EOK) |
| goto error; |
| |
| /* Request loader to start the program */ |
| rc = async_req_0_0(phone_id, LOADER_RUN); |
| if (rc != EOK) |
| goto error; |
| |
| /* Success */ |
| ipc_hangup(phone_id); |
| return 1; |
| |
| /* Error exit */ |
| error: |
| ipc_hangup(phone_id); |
| return 0; |
| } |
| |
| /** @} |
| */ |