Livox-SDK
230 lines
8.4 KiB
C
230 lines
8.4 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "apr_arch_file_io.h"
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#include "apr_file_io.h"
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#include "apr_general.h"
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#include "apr_strings.h"
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#include <string.h>
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#include "apr_arch_inherit.h"
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#include <io.h> /* for [_open/_get]_osfhandle */
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APR_DECLARE(apr_status_t) apr_file_dup(apr_file_t **new_file,
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apr_file_t *old_file, apr_pool_t *p)
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{
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#ifdef _WIN32_WCE
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return APR_ENOTIMPL;
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#else
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HANDLE hproc = GetCurrentProcess();
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HANDLE newhand = NULL;
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if (!DuplicateHandle(hproc, old_file->filehand,
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hproc, &newhand, 0, FALSE,
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DUPLICATE_SAME_ACCESS)) {
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return apr_get_os_error();
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}
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(*new_file) = (apr_file_t *) apr_pcalloc(p, sizeof(apr_file_t));
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(*new_file)->filehand = newhand;
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(*new_file)->flags = old_file->flags & ~(APR_STD_FLAGS | APR_INHERIT);
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(*new_file)->pool = p;
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(*new_file)->fname = apr_pstrdup(p, old_file->fname);
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(*new_file)->append = old_file->append;
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(*new_file)->buffered = FALSE;
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(*new_file)->ungetchar = old_file->ungetchar;
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#if APR_HAS_THREADS
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if (old_file->mutex) {
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apr_thread_mutex_create(&((*new_file)->mutex),
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APR_THREAD_MUTEX_DEFAULT, p);
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}
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#endif
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apr_pool_cleanup_register((*new_file)->pool, (void *)(*new_file), file_cleanup,
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apr_pool_cleanup_null);
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#if APR_FILES_AS_SOCKETS
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/* Create a pollset with room for one descriptor. */
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/* ### check return codes */
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(void) apr_pollset_create(&(*new_file)->pollset, 1, p, 0);
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#endif
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return APR_SUCCESS;
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#endif /* !defined(_WIN32_WCE) */
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}
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APR_DECLARE(apr_status_t) apr_file_dup2(apr_file_t *new_file,
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apr_file_t *old_file, apr_pool_t *p)
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{
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#ifdef _WIN32_WCE
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return APR_ENOTIMPL;
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#else
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HANDLE hproc = GetCurrentProcess();
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HANDLE newhand = NULL;
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apr_int32_t newflags;
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int fd;
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if (new_file->flags & APR_STD_FLAGS)
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{
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if ((new_file->flags & APR_STD_FLAGS) == APR_STDERR_FLAG)
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{
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/* Flush stderr and unset its buffer, then commit the fd-based buffer.
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* This is typically a noop for Win2K/XP since services with NULL std
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* handles [but valid FILE *'s, oddly enough], but is required
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* for NT 4.0 and to use this code outside of services.
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*/
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fflush(stderr);
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setvbuf(stderr, NULL, _IONBF, 0);
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if (!_isatty(2)) {
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_commit(2 /* stderr */);
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}
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/* Clone a handle can _close() without harming the source handle,
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* open an MSVCRT-based pseudo-fd for the file handle, then dup2
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* and close our temporary pseudo-fd once it's been duplicated.
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* This will incidently keep the FILE-based stderr in sync.
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* Note the apparently redundant _O_BINARY coersions are required.
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* Note the _dup2 will close the previous std Win32 handle.
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*/
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if (!DuplicateHandle(hproc, old_file->filehand, hproc, &newhand,
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0, FALSE, DUPLICATE_SAME_ACCESS)) {
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return apr_get_os_error();
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}
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fd = _open_osfhandle((INT_PTR)newhand, _O_WRONLY | _O_BINARY);
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_dup2(fd, 2);
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_close(fd);
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_setmode(2, _O_BINARY);
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/* hPipeWrite was _close()'ed above, and _dup2()'ed
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* to fd 2 creating a new, inherited Win32 handle.
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* Recover that real handle from fd 2. Note that
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* SetStdHandle(STD_ERROR_HANDLE, _get_osfhandle(2))
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* is implicit in the dup2() call above
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*/
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newhand = (HANDLE)_get_osfhandle(2);
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}
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else if ((new_file->flags & APR_STD_FLAGS) == APR_STDOUT_FLAG) {
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/* For the process flow see the stderr case above */
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fflush(stdout);
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setvbuf(stdout, NULL, _IONBF, 0);
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if (!_isatty(1)) {
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_commit(1 /* stdout */);
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}
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if (!DuplicateHandle(hproc, old_file->filehand, hproc, &newhand,
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0, FALSE, DUPLICATE_SAME_ACCESS)) {
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return apr_get_os_error();
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}
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fd = _open_osfhandle((INT_PTR)newhand, _O_WRONLY | _O_BINARY);
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_dup2(fd, 1);
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_close(fd);
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_setmode(1, _O_BINARY);
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newhand = (HANDLE)_get_osfhandle(1);
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}
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else if ((new_file->flags & APR_STD_FLAGS) == APR_STDIN_FLAG) {
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/* For the process flow see the stderr case above */
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fflush(stdin);
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setvbuf(stdin, NULL, _IONBF, 0);
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if (!DuplicateHandle(hproc, old_file->filehand, hproc, &newhand,
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0, FALSE, DUPLICATE_SAME_ACCESS)) {
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return apr_get_os_error();
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}
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fd = _open_osfhandle((INT_PTR)newhand, _O_RDONLY | _O_BINARY);
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_dup2(fd, 0);
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_close(fd);
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_setmode(0, _O_BINARY);
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newhand = (HANDLE)_get_osfhandle(0);
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}
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newflags = (new_file->flags & APR_STD_FLAGS)
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| (old_file->flags & ~APR_STD_FLAGS) | APR_INHERIT;
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/* No need to close the old file, _dup2() above did that for us */
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}
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else {
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if (!DuplicateHandle(hproc, old_file->filehand,
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hproc, &newhand, 0,
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FALSE, DUPLICATE_SAME_ACCESS)) {
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return apr_get_os_error();
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}
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newflags = old_file->flags & ~(APR_STD_FLAGS | APR_INHERIT);
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if (new_file->filehand
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&& (new_file->filehand != INVALID_HANDLE_VALUE)) {
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CloseHandle(new_file->filehand);
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}
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}
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new_file->flags = newflags;
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new_file->filehand = newhand;
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new_file->fname = apr_pstrdup(new_file->pool, old_file->fname);
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new_file->append = old_file->append;
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new_file->buffered = FALSE;
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new_file->ungetchar = old_file->ungetchar;
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#if APR_HAS_THREADS
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if (old_file->mutex) {
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apr_thread_mutex_create(&(new_file->mutex),
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APR_THREAD_MUTEX_DEFAULT, p);
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}
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#endif
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return APR_SUCCESS;
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#endif /* !defined(_WIN32_WCE) */
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}
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APR_DECLARE(apr_status_t) apr_file_setaside(apr_file_t **new_file,
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apr_file_t *old_file,
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apr_pool_t *p)
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{
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*new_file = (apr_file_t *)apr_pmemdup(p, old_file, sizeof(apr_file_t));
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(*new_file)->pool = p;
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if (old_file->buffered) {
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(*new_file)->buffer = apr_palloc(p, old_file->bufsize);
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(*new_file)->bufsize = old_file->bufsize;
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if (old_file->direction == 1) {
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memcpy((*new_file)->buffer, old_file->buffer, old_file->bufpos);
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}
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else {
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memcpy((*new_file)->buffer, old_file->buffer, old_file->dataRead);
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}
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}
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if (old_file->mutex) {
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apr_thread_mutex_create(&((*new_file)->mutex),
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APR_THREAD_MUTEX_DEFAULT, p);
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apr_thread_mutex_destroy(old_file->mutex);
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}
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if (old_file->fname) {
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(*new_file)->fname = apr_pstrdup(p, old_file->fname);
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}
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if (!(old_file->flags & APR_FOPEN_NOCLEANUP)) {
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apr_pool_cleanup_register(p, (void *)(*new_file),
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file_cleanup,
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file_cleanup);
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}
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old_file->filehand = INVALID_HANDLE_VALUE;
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apr_pool_cleanup_kill(old_file->pool, (void *)old_file,
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file_cleanup);
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#if APR_FILES_AS_SOCKETS
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/* Create a pollset with room for one descriptor. */
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/* ### check return codes */
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(void) apr_pollset_create(&(*new_file)->pollset, 1, p, 0);
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#endif
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return APR_SUCCESS;
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}
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