diff options
Diffstat (limited to 'file_io/os2/pipe.c')
| -rw-r--r-- | file_io/os2/pipe.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/file_io/os2/pipe.c b/file_io/os2/pipe.c new file mode 100644 index 0000000..14f2b1a --- /dev/null +++ b/file_io/os2/pipe.c @@ -0,0 +1,236 @@ +/* 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. + */ + +#define INCL_DOSERRORS +#include "apr_arch_file_io.h" +#include "apr_file_io.h" +#include "apr_general.h" +#include "apr_lib.h" +#include "apr_strings.h" +#include "apr_portable.h" +#include <string.h> +#include <process.h> + +static apr_status_t file_pipe_create(apr_file_t **in, apr_file_t **out, + apr_pool_t *pool_in, apr_pool_t *pool_out) +{ + ULONG filedes[2]; + ULONG rc, action; + static int id = 0; + char pipename[50]; + + sprintf(pipename, "/pipe/%d.%d", getpid(), id++); + rc = DosCreateNPipe(pipename, filedes, NP_ACCESS_INBOUND, NP_NOWAIT|1, 4096, 4096, 0); + + if (rc) + return APR_FROM_OS_ERROR(rc); + + rc = DosConnectNPipe(filedes[0]); + + if (rc && rc != ERROR_PIPE_NOT_CONNECTED) { + DosClose(filedes[0]); + return APR_FROM_OS_ERROR(rc); + } + + rc = DosOpen (pipename, filedes+1, &action, 0, FILE_NORMAL, + OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW, + OPEN_ACCESS_WRITEONLY | OPEN_SHARE_DENYREADWRITE, + NULL); + + if (rc) { + DosClose(filedes[0]); + return APR_FROM_OS_ERROR(rc); + } + + (*in) = (apr_file_t *)apr_palloc(pool_in, sizeof(apr_file_t)); + rc = DosCreateEventSem(NULL, &(*in)->pipeSem, DC_SEM_SHARED, FALSE); + + if (rc) { + DosClose(filedes[0]); + DosClose(filedes[1]); + return APR_FROM_OS_ERROR(rc); + } + + rc = DosSetNPipeSem(filedes[0], (HSEM)(*in)->pipeSem, 1); + + if (!rc) { + rc = DosSetNPHState(filedes[0], NP_WAIT); + } + + if (rc) { + DosClose(filedes[0]); + DosClose(filedes[1]); + DosCloseEventSem((*in)->pipeSem); + return APR_FROM_OS_ERROR(rc); + } + + (*in)->pool = pool_in; + (*in)->filedes = filedes[0]; + (*in)->fname = apr_pstrdup(pool_in, pipename); + (*in)->isopen = TRUE; + (*in)->buffered = FALSE; + (*in)->flags = 0; + (*in)->pipe = 1; + (*in)->timeout = -1; + (*in)->blocking = BLK_ON; + apr_pool_cleanup_register(pool_in, *in, apr_file_cleanup, + apr_pool_cleanup_null); + + (*out) = (apr_file_t *)apr_palloc(pool_out, sizeof(apr_file_t)); + (*out)->pool = pool_out; + (*out)->filedes = filedes[1]; + (*out)->fname = apr_pstrdup(pool_out, pipename); + (*out)->isopen = TRUE; + (*out)->buffered = FALSE; + (*out)->flags = 0; + (*out)->pipe = 1; + (*out)->timeout = -1; + (*out)->blocking = BLK_ON; + apr_pool_cleanup_register(pool_out, *out, apr_file_cleanup, + apr_pool_cleanup_null); + + return APR_SUCCESS; +} + +static void file_pipe_block(apr_file_t **in, apr_file_t **out, + apr_int32_t blocking) +{ + switch (blocking) { + case APR_FULL_BLOCK: + break; + case APR_READ_BLOCK: + apr_file_pipe_timeout_set(*out, 0); + break; + case APR_WRITE_BLOCK: + apr_file_pipe_timeout_set(*in, 0); + break; + default: + apr_file_pipe_timeout_set(*out, 0); + apr_file_pipe_timeout_set(*in, 0); + break; + } +} + +APR_DECLARE(apr_status_t) apr_file_pipe_create(apr_file_t **in, + apr_file_t **out, + apr_pool_t *pool) +{ + return file_pipe_create(in, out, pool, pool); +} + +APR_DECLARE(apr_status_t) apr_file_pipe_create_ex(apr_file_t **in, + apr_file_t **out, + apr_int32_t blocking, + apr_pool_t *pool) +{ + apr_status_t status; + + if ((status = file_pipe_create(in, out, pool, pool)) != APR_SUCCESS) + return status; + + file_pipe_block(in, out, blocking); + + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_file_pipe_create_pools(apr_file_t **in, + apr_file_t **out, + apr_int32_t blocking, + apr_pool_t *pool_in, + apr_pool_t *pool_out) +{ + apr_status_t status; + + if ((status = file_pipe_create(in, out, pool_in, pool_out)) != APR_SUCCESS) + return status; + + file_pipe_block(in, out, blocking); + + return APR_SUCCESS; +} + + +APR_DECLARE(apr_status_t) apr_file_namedpipe_create(const char *filename, apr_fileperms_t perm, apr_pool_t *pool) +{ + /* Not yet implemented, interface not suitable */ + return APR_ENOTIMPL; +} + + + +APR_DECLARE(apr_status_t) apr_file_pipe_timeout_set(apr_file_t *thepipe, apr_interval_time_t timeout) +{ + if (thepipe->pipe == 1) { + thepipe->timeout = timeout; + + if (thepipe->timeout >= 0) { + if (thepipe->blocking != BLK_OFF) { + thepipe->blocking = BLK_OFF; + return APR_FROM_OS_ERROR(DosSetNPHState(thepipe->filedes, NP_NOWAIT)); + } + } + else if (thepipe->timeout == -1) { + if (thepipe->blocking != BLK_ON) { + thepipe->blocking = BLK_ON; + return APR_FROM_OS_ERROR(DosSetNPHState(thepipe->filedes, NP_WAIT)); + } + } + } + return APR_EINVAL; +} + + + +APR_DECLARE(apr_status_t) apr_file_pipe_timeout_get(apr_file_t *thepipe, apr_interval_time_t *timeout) +{ + if (thepipe->pipe == 1) { + *timeout = thepipe->timeout; + return APR_SUCCESS; + } + return APR_EINVAL; +} + + + +APR_DECLARE(apr_status_t) apr_os_pipe_put_ex(apr_file_t **file, + apr_os_file_t *thefile, + int register_cleanup, + apr_pool_t *pool) +{ + (*file) = apr_pcalloc(pool, sizeof(apr_file_t)); + (*file)->pool = pool; + (*file)->isopen = TRUE; + (*file)->pipe = 1; + (*file)->blocking = BLK_UNKNOWN; /* app needs to make a timeout call */ + (*file)->timeout = -1; + (*file)->filedes = *thefile; + + if (register_cleanup) { + apr_pool_cleanup_register(pool, *file, apr_file_cleanup, + apr_pool_cleanup_null); + } + + return APR_SUCCESS; +} + + + +APR_DECLARE(apr_status_t) apr_os_pipe_put(apr_file_t **file, + apr_os_file_t *thefile, + apr_pool_t *pool) +{ + return apr_os_pipe_put_ex(file, thefile, 0, pool); +} |