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-rw-r--r--mmap/unix/common.c43
-rw-r--r--mmap/unix/mmap.c172
-rw-r--r--mmap/win32/mmap.c161
3 files changed, 376 insertions, 0 deletions
diff --git a/mmap/unix/common.c b/mmap/unix/common.c
new file mode 100644
index 0000000..1172f3c
--- /dev/null
+++ b/mmap/unix/common.c
@@ -0,0 +1,43 @@
+/* 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.
+ */
+
+/* common .c
+ * This file has any function that is truly common and platform
+ * neutral. Or at least that's the theory.
+ *
+ * The header files are a problem so there are a few #ifdef's to take
+ * care of those.
+ *
+ */
+
+#include "apr.h"
+#include "apr_private.h"
+#include "apr_mmap.h"
+#include "apr_errno.h"
+
+#if APR_HAS_MMAP || defined(BEOS)
+
+APR_DECLARE(apr_status_t) apr_mmap_offset(void **addr, apr_mmap_t *mmap,
+ apr_off_t offset)
+{
+ if (offset < 0 || (apr_size_t)offset > mmap->size)
+ return APR_EINVAL;
+
+ (*addr) = (char *) mmap->mm + offset;
+ return APR_SUCCESS;
+}
+
+#endif
diff --git a/mmap/unix/mmap.c b/mmap/unix/mmap.c
new file mode 100644
index 0000000..6719570
--- /dev/null
+++ b/mmap/unix/mmap.c
@@ -0,0 +1,172 @@
+/* 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.h"
+#include "apr_private.h"
+#include "apr_general.h"
+#include "apr_strings.h"
+#include "apr_mmap.h"
+#include "apr_errno.h"
+#include "apr_arch_file_io.h"
+#include "apr_portable.h"
+
+/* System headers required for the mmap library */
+#ifdef BEOS
+#include <kernel/OS.h>
+#endif
+#if APR_HAVE_STRING_H
+#include <string.h>
+#endif
+#if APR_HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
+#endif
+
+#if APR_HAS_MMAP || defined(BEOS)
+
+static apr_status_t mmap_cleanup(void *themmap)
+{
+ apr_mmap_t *mm = themmap;
+ apr_mmap_t *next = APR_RING_NEXT(mm,link);
+ int rv = 0;
+
+ /* we no longer refer to the mmaped region */
+ APR_RING_REMOVE(mm,link);
+ APR_RING_NEXT(mm,link) = NULL;
+ APR_RING_PREV(mm,link) = NULL;
+
+ if (next != mm) {
+ /* more references exist, so we're done */
+ return APR_SUCCESS;
+ }
+
+#ifdef BEOS
+ rv = delete_area(mm->area);
+#else
+ rv = munmap(mm->mm, mm->size);
+#endif
+ mm->mm = (void *)-1;
+
+ if (rv == 0) {
+ return APR_SUCCESS;
+ }
+ return errno;
+}
+
+APR_DECLARE(apr_status_t) apr_mmap_create(apr_mmap_t **new,
+ apr_file_t *file, apr_off_t offset,
+ apr_size_t size, apr_int32_t flag,
+ apr_pool_t *cont)
+{
+ void *mm;
+#ifdef BEOS
+ area_id aid = -1;
+ uint32 pages = 0;
+#else
+ apr_int32_t native_flags = 0;
+#endif
+
+#if APR_HAS_LARGE_FILES && defined(HAVE_MMAP64)
+#define mmap mmap64
+#elif APR_HAS_LARGE_FILES && SIZEOF_OFF_T == 4
+ /* LFS but no mmap64: check for overflow */
+ if ((apr_int64_t)offset + size > INT_MAX)
+ return APR_EINVAL;
+#endif
+
+ if (size == 0)
+ return APR_EINVAL;
+
+ if (file == NULL || file->filedes == -1 || file->buffered)
+ return APR_EBADF;
+ (*new) = (apr_mmap_t *)apr_pcalloc(cont, sizeof(apr_mmap_t));
+
+#ifdef BEOS
+ /* XXX: mmap shouldn't really change the seek offset */
+ apr_file_seek(file, APR_SET, &offset);
+
+ /* There seems to be some strange interactions that mean our area must
+ * be set as READ & WRITE or writev will fail! Go figure...
+ * So we ignore the value in flags and always ask for both READ and WRITE
+ */
+ pages = (size + B_PAGE_SIZE -1) / B_PAGE_SIZE;
+ aid = create_area("apr_mmap", &mm , B_ANY_ADDRESS, pages * B_PAGE_SIZE,
+ B_NO_LOCK, B_WRITE_AREA|B_READ_AREA);
+
+ if (aid < B_NO_ERROR) {
+ /* we failed to get an area we can use... */
+ *new = NULL;
+ return APR_ENOMEM;
+ }
+
+ if (aid >= B_NO_ERROR)
+ read(file->filedes, mm, size);
+
+ (*new)->area = aid;
+#else
+
+ if (flag & APR_MMAP_WRITE) {
+ native_flags |= PROT_WRITE;
+ }
+ if (flag & APR_MMAP_READ) {
+ native_flags |= PROT_READ;
+ }
+
+ mm = mmap(NULL, size, native_flags, MAP_SHARED, file->filedes, offset);
+
+ if (mm == (void *)-1) {
+ /* we failed to get an mmap'd file... */
+ *new = NULL;
+ return errno;
+ }
+#endif
+
+ (*new)->mm = mm;
+ (*new)->size = size;
+ (*new)->cntxt = cont;
+ APR_RING_ELEM_INIT(*new, link);
+
+ /* register the cleanup... */
+ apr_pool_cleanup_register((*new)->cntxt, (void*)(*new), mmap_cleanup,
+ apr_pool_cleanup_null);
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(apr_status_t) apr_mmap_dup(apr_mmap_t **new_mmap,
+ apr_mmap_t *old_mmap,
+ apr_pool_t *p)
+{
+ *new_mmap = (apr_mmap_t *)apr_pmemdup(p, old_mmap, sizeof(apr_mmap_t));
+ (*new_mmap)->cntxt = p;
+
+ APR_RING_INSERT_AFTER(old_mmap, *new_mmap, link);
+
+ apr_pool_cleanup_register(p, *new_mmap, mmap_cleanup,
+ apr_pool_cleanup_null);
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(apr_status_t) apr_mmap_delete(apr_mmap_t *mm)
+{
+ return apr_pool_cleanup_run(mm->cntxt, mm, mmap_cleanup);
+}
+
+#endif
diff --git a/mmap/win32/mmap.c b/mmap/win32/mmap.c
new file mode 100644
index 0000000..d5d88ae
--- /dev/null
+++ b/mmap/win32/mmap.c
@@ -0,0 +1,161 @@
+/* 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.h"
+#include "apr_private.h"
+#include "apr_general.h"
+#include "apr_mmap.h"
+#include "apr_errno.h"
+#include "apr_arch_file_io.h"
+#include "apr_portable.h"
+#include "apr_strings.h"
+
+#if APR_HAS_MMAP
+
+static apr_status_t mmap_cleanup(void *themmap)
+{
+ apr_mmap_t *mm = themmap;
+ apr_mmap_t *next = APR_RING_NEXT(mm,link);
+
+ /* we no longer refer to the mmaped region */
+ APR_RING_REMOVE(mm,link);
+ APR_RING_NEXT(mm,link) = NULL;
+ APR_RING_PREV(mm,link) = NULL;
+
+ if (next != mm) {
+ /* more references exist, so we're done */
+ return APR_SUCCESS;
+ }
+
+ if (mm->mv) {
+ if (!UnmapViewOfFile(mm->mv))
+ {
+ apr_status_t rv = apr_get_os_error();
+ CloseHandle(mm->mhandle);
+ mm->mv = NULL;
+ mm->mhandle = NULL;
+ return rv;
+ }
+ mm->mv = NULL;
+ }
+ if (mm->mhandle)
+ {
+ if (!CloseHandle(mm->mhandle))
+ {
+ apr_status_t rv = apr_get_os_error();
+ CloseHandle(mm->mhandle);
+ mm->mhandle = NULL;
+ return rv;
+ }
+ mm->mhandle = NULL;
+ }
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(apr_status_t) apr_mmap_create(apr_mmap_t **new, apr_file_t *file,
+ apr_off_t offset, apr_size_t size,
+ apr_int32_t flag, apr_pool_t *cont)
+{
+ static DWORD memblock = 0;
+ DWORD fmaccess = 0;
+ DWORD mvaccess = 0;
+ DWORD offlo;
+ DWORD offhi;
+
+ if (size == 0)
+ return APR_EINVAL;
+
+ if (flag & APR_MMAP_WRITE)
+ fmaccess |= PAGE_READWRITE;
+ else if (flag & APR_MMAP_READ)
+ fmaccess |= PAGE_READONLY;
+
+ if (flag & APR_MMAP_READ)
+ mvaccess |= FILE_MAP_READ;
+ if (flag & APR_MMAP_WRITE)
+ mvaccess |= FILE_MAP_WRITE;
+
+ if (!file || !file->filehand || file->filehand == INVALID_HANDLE_VALUE
+ || file->buffered)
+ return APR_EBADF;
+
+ if (!memblock)
+ {
+ SYSTEM_INFO si;
+ GetSystemInfo(&si);
+ memblock = si.dwAllocationGranularity;
+ }
+
+ *new = apr_pcalloc(cont, sizeof(apr_mmap_t));
+ (*new)->pstart = (offset / memblock) * memblock;
+ (*new)->poffset = offset - (*new)->pstart;
+ (*new)->psize = (apr_size_t)((*new)->poffset) + size;
+ /* The size of the CreateFileMapping object is the current size
+ * of the size of the mmap object (e.g. file size), not the size
+ * of the mapped region!
+ */
+
+ (*new)->mhandle = CreateFileMapping(file->filehand, NULL, fmaccess,
+ 0, 0, NULL);
+ if (!(*new)->mhandle || (*new)->mhandle == INVALID_HANDLE_VALUE)
+ {
+ *new = NULL;
+ return apr_get_os_error();
+ }
+
+ offlo = (DWORD)(*new)->pstart;
+ offhi = (DWORD)((*new)->pstart >> 32);
+ (*new)->mv = MapViewOfFile((*new)->mhandle, mvaccess, offhi,
+ offlo, (*new)->psize);
+ if (!(*new)->mv)
+ {
+ apr_status_t rv = apr_get_os_error();
+ CloseHandle((*new)->mhandle);
+ *new = NULL;
+ return rv;
+ }
+
+ (*new)->mm = (char*)((*new)->mv) + (*new)->poffset;
+ (*new)->size = size;
+ (*new)->cntxt = cont;
+ APR_RING_ELEM_INIT(*new, link);
+
+ /* register the cleanup... */
+ apr_pool_cleanup_register((*new)->cntxt, (void*)(*new), mmap_cleanup,
+ apr_pool_cleanup_null);
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(apr_status_t) apr_mmap_dup(apr_mmap_t **new_mmap,
+ apr_mmap_t *old_mmap,
+ apr_pool_t *p)
+{
+ *new_mmap = (apr_mmap_t *)apr_pmemdup(p, old_mmap, sizeof(apr_mmap_t));
+ (*new_mmap)->cntxt = p;
+
+ APR_RING_INSERT_AFTER(old_mmap, *new_mmap, link);
+
+ apr_pool_cleanup_register(p, *new_mmap, mmap_cleanup,
+ apr_pool_cleanup_null);
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(apr_status_t) apr_mmap_delete(apr_mmap_t *mm)
+{
+ return apr_pool_cleanup_run(mm->cntxt, mm, mmap_cleanup);
+}
+
+#endif
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