2009-07-30 19:33:57 +00:00
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/*
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2011-04-21 21:14:28 +00:00
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* Copyright © 2009 Red Hat, Inc.
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2018-05-11 09:10:33 +00:00
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* Copyright © 2018 Ebrahim Byagowi
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2009-07-30 19:33:57 +00:00
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*
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2010-04-22 04:11:43 +00:00
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* This is part of HarfBuzz, a text shaping library.
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2009-07-30 19:33:57 +00:00
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod
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*/
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2013-01-14 06:33:58 +00:00
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/* http://www.oracle.com/technetwork/articles/servers-storage-dev/standardheaderfiles-453865.html */
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2014-07-09 21:17:18 +00:00
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#ifndef _POSIX_C_SOURCE
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2018-01-12 07:33:16 +00:00
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#define _POSIX_C_SOURCE 200809L
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2014-07-09 21:17:18 +00:00
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#endif
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2013-01-14 06:33:58 +00:00
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2011-04-20 22:50:27 +00:00
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#include "hb-private.hh"
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2018-05-04 01:10:57 +00:00
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#include "hb-blob-private.hh"
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2009-07-30 19:33:57 +00:00
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2009-08-13 09:25:23 +00:00
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#ifdef HAVE_SYS_MMAN_H
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2009-08-12 23:36:29 +00:00
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#ifdef HAVE_UNISTD_H
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2009-08-03 21:53:29 +00:00
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#include <unistd.h>
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2009-08-12 23:36:29 +00:00
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#endif /* HAVE_UNISTD_H */
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2009-08-03 21:53:29 +00:00
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#include <sys/mman.h>
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2009-08-13 09:25:23 +00:00
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#endif /* HAVE_SYS_MMAN_H */
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2009-08-03 21:53:29 +00:00
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2010-07-23 19:11:18 +00:00
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#include <stdio.h>
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#include <errno.h>
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2018-04-20 05:59:06 +00:00
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#include <stdlib.h>
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2010-07-23 19:11:18 +00:00
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2011-05-07 02:28:26 +00:00
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2018-08-06 13:17:48 +00:00
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DEFINE_NULL_INSTANCE (hb_blob_t) =
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{
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HB_OBJECT_HEADER_STATIC,
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true, /* immutable */
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nullptr, /* data */
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0, /* length */
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HB_MEMORY_MODE_READONLY, /* mode */
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nullptr, /* user_data */
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nullptr /* destroy */
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};
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2013-09-04 22:28:39 +00:00
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/**
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2015-01-07 03:16:38 +00:00
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* hb_blob_create: (skip)
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* @data: Pointer to blob data.
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2013-09-04 22:28:39 +00:00
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* @length: Length of @data in bytes.
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* @mode: Memory mode for @data.
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2015-01-07 03:16:38 +00:00
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* @user_data: Data parameter to pass to @destroy.
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* @destroy: Callback to call when @data is not needed anymore.
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2013-09-04 22:28:39 +00:00
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*
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* Creates a new "blob" object wrapping @data. The @mode parameter is used
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* to negotiate ownership and lifecycle of @data.
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*
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2013-09-06 19:40:22 +00:00
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* Return value: New blob, or the empty blob if something failed or if @length is
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2013-09-04 22:28:39 +00:00
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* zero. Destroy with hb_blob_destroy().
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*
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2015-09-03 11:23:22 +00:00
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* Since: 0.9.2
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2013-09-04 22:28:39 +00:00
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**/
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2009-07-30 19:33:57 +00:00
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hb_blob_t *
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hb_blob_create (const char *data,
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2009-08-03 21:53:29 +00:00
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unsigned int length,
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2009-07-30 19:33:57 +00:00
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hb_memory_mode_t mode,
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2011-04-20 06:59:28 +00:00
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void *user_data,
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hb_destroy_func_t destroy)
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2009-07-30 19:33:57 +00:00
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{
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hb_blob_t *blob;
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2014-12-19 02:22:21 +00:00
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if (!length ||
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length >= 1u << 31 ||
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!(blob = hb_object_create<hb_blob_t> ())) {
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2009-07-30 19:33:57 +00:00
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if (destroy)
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destroy (user_data);
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2012-06-05 16:31:51 +00:00
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return hb_blob_get_empty ();
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2009-07-30 19:33:57 +00:00
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}
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blob->data = data;
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2009-08-03 21:53:29 +00:00
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blob->length = length;
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2009-07-30 19:33:57 +00:00
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blob->mode = mode;
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blob->user_data = user_data;
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2011-04-20 06:59:28 +00:00
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blob->destroy = destroy;
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2009-07-30 19:33:57 +00:00
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if (blob->mode == HB_MEMORY_MODE_DUPLICATE) {
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blob->mode = HB_MEMORY_MODE_READONLY;
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2018-05-04 02:14:54 +00:00
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if (!blob->try_make_writable ()) {
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2009-08-04 01:27:08 +00:00
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hb_blob_destroy (blob);
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2012-06-05 16:31:51 +00:00
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return hb_blob_get_empty ();
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2009-08-04 01:27:08 +00:00
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}
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2009-07-30 19:33:57 +00:00
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}
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return blob;
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}
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2017-10-11 13:51:31 +00:00
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static void
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_hb_blob_destroy (void *data)
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{
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hb_blob_destroy ((hb_blob_t *) data);
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}
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2013-09-04 22:28:39 +00:00
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/**
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* hb_blob_create_sub_blob:
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* @parent: Parent blob.
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* @offset: Start offset of sub-blob within @parent, in bytes.
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* @length: Length of sub-blob.
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*
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* Returns a blob that represents a range of bytes in @parent. The new
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* blob is always created with %HB_MEMORY_MODE_READONLY, meaning that it
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* will never modify data in the parent blob. The parent data is not
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* expected to be modified, and will result in undefined behavior if it
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* is.
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*
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* Makes @parent immutable.
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*
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2013-09-06 19:40:22 +00:00
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* Return value: New blob, or the empty blob if something failed or if
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* @length is zero or @offset is beyond the end of @parent's data. Destroy
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* with hb_blob_destroy().
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2013-09-04 22:28:39 +00:00
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*
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2015-09-03 11:23:22 +00:00
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* Since: 0.9.2
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2013-09-04 22:28:39 +00:00
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**/
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2009-08-03 21:53:29 +00:00
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hb_blob_t *
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hb_blob_create_sub_blob (hb_blob_t *parent,
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unsigned int offset,
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unsigned int length)
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{
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hb_blob_t *blob;
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2011-05-11 18:30:56 +00:00
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if (!length || offset >= parent->length)
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2012-06-05 16:31:51 +00:00
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return hb_blob_get_empty ();
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2009-08-03 21:53:29 +00:00
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2011-05-07 02:28:26 +00:00
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hb_blob_make_immutable (parent);
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2009-08-03 21:53:29 +00:00
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2011-05-07 02:28:26 +00:00
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blob = hb_blob_create (parent->data + offset,
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2011-05-03 04:19:18 +00:00
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MIN (length, parent->length - offset),
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2013-02-25 22:06:35 +00:00
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HB_MEMORY_MODE_READONLY,
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2011-05-03 04:19:18 +00:00
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hb_blob_reference (parent),
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2017-10-11 13:51:31 +00:00
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_hb_blob_destroy);
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2009-08-03 21:53:29 +00:00
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return blob;
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}
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2018-02-14 06:12:36 +00:00
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/**
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* hb_blob_copy_writable_or_fail:
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* @blob: A blob.
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*
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* Makes a writable copy of @blob.
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*
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* Return value: New blob, or nullptr if allocation failed.
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*
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* Since: 1.8.0
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**/
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hb_blob_t *
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hb_blob_copy_writable_or_fail (hb_blob_t *blob)
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{
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blob = hb_blob_create (blob->data,
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blob->length,
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HB_MEMORY_MODE_DUPLICATE,
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nullptr,
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nullptr);
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if (unlikely (blob == hb_blob_get_empty ()))
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blob = nullptr;
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return blob;
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}
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2013-09-04 22:28:39 +00:00
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/**
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* hb_blob_get_empty:
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*
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* Returns the singleton empty blob.
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*
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* See TODO:link object types for more information.
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*
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2013-09-06 19:40:22 +00:00
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* Return value: (transfer full): the empty blob.
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2013-09-04 22:28:39 +00:00
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*
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2015-09-03 11:23:22 +00:00
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* Since: 0.9.2
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2013-09-04 22:28:39 +00:00
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**/
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2009-08-03 21:53:29 +00:00
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hb_blob_t *
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2011-05-02 23:36:39 +00:00
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hb_blob_get_empty (void)
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2009-08-03 21:53:29 +00:00
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{
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2018-08-06 13:17:48 +00:00
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return const_cast<hb_blob_t *> (&Null(hb_blob_t));
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2009-08-03 21:53:29 +00:00
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}
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2013-09-04 22:28:39 +00:00
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/**
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2013-09-06 19:40:22 +00:00
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* hb_blob_reference: (skip)
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2013-09-04 22:28:39 +00:00
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* @blob: a blob.
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*
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* Increases the reference count on @blob.
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*
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* See TODO:link object types for more information.
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*
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2013-09-06 19:40:22 +00:00
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* Return value: @blob.
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2013-09-04 22:28:39 +00:00
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*
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2015-09-03 11:23:22 +00:00
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* Since: 0.9.2
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2013-09-04 22:28:39 +00:00
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**/
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2009-07-30 19:33:57 +00:00
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hb_blob_t *
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hb_blob_reference (hb_blob_t *blob)
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{
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2011-04-27 20:38:03 +00:00
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return hb_object_reference (blob);
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2009-07-30 19:33:57 +00:00
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}
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2013-09-04 22:28:39 +00:00
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/**
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2013-09-06 19:40:22 +00:00
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* hb_blob_destroy: (skip)
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2013-09-04 22:28:39 +00:00
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* @blob: a blob.
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*
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2018-01-31 13:44:45 +00:00
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* Decreases the reference count on @blob, and if it reaches zero, destroys
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2013-09-04 22:28:39 +00:00
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* @blob, freeing all memory, possibly calling the destroy-callback the blob
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* was created for if it has not been called already.
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*
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* See TODO:link object types for more information.
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*
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2015-09-03 11:23:22 +00:00
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* Since: 0.9.2
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2013-09-04 22:28:39 +00:00
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**/
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2009-07-30 19:33:57 +00:00
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void
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hb_blob_destroy (hb_blob_t *blob)
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{
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2011-04-27 20:38:03 +00:00
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if (!hb_object_destroy (blob)) return;
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2009-07-30 19:33:57 +00:00
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2018-05-04 02:14:54 +00:00
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blob->fini_shallow ();
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2009-07-30 19:33:57 +00:00
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free (blob);
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}
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2013-09-04 22:28:39 +00:00
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/**
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2013-09-06 19:40:22 +00:00
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* hb_blob_set_user_data: (skip)
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2013-09-04 22:28:39 +00:00
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* @blob: a blob.
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* @key: key for data to set.
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* @data: data to set.
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* @destroy: callback to call when @data is not needed anymore.
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* @replace: whether to replace an existing data with the same key.
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*
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2018-04-20 05:59:06 +00:00
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* Return value:
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2013-09-04 22:28:39 +00:00
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*
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2015-09-03 11:23:22 +00:00
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* Since: 0.9.2
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2013-09-04 22:28:39 +00:00
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**/
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2011-04-28 01:46:01 +00:00
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hb_bool_t
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hb_blob_set_user_data (hb_blob_t *blob,
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hb_user_data_key_t *key,
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void * data,
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2011-08-08 22:43:24 +00:00
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hb_destroy_func_t destroy,
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hb_bool_t replace)
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2011-04-28 01:46:01 +00:00
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{
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2011-08-08 22:43:24 +00:00
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return hb_object_set_user_data (blob, key, data, destroy, replace);
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2011-04-28 01:46:01 +00:00
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}
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2013-09-04 22:28:39 +00:00
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/**
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2013-09-06 19:40:22 +00:00
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* hb_blob_get_user_data: (skip)
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2013-09-04 22:28:39 +00:00
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* @blob: a blob.
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* @key: key for data to get.
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*
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*
|
2018-04-20 05:59:06 +00:00
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*
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* Return value: (transfer none):
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2013-09-04 22:28:39 +00:00
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*
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2015-09-03 11:23:22 +00:00
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* Since: 0.9.2
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2013-09-04 22:28:39 +00:00
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**/
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2011-04-28 01:46:01 +00:00
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void *
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hb_blob_get_user_data (hb_blob_t *blob,
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hb_user_data_key_t *key)
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{
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return hb_object_get_user_data (blob, key);
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}
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2013-09-04 22:28:39 +00:00
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/**
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* hb_blob_make_immutable:
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* @blob: a blob.
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*
|
2018-04-20 05:59:06 +00:00
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*
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2013-09-04 22:28:39 +00:00
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*
|
2015-09-03 11:23:22 +00:00
|
|
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* Since: 0.9.2
|
2013-09-04 22:28:39 +00:00
|
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**/
|
2009-08-04 01:27:08 +00:00
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void
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2011-05-07 02:28:26 +00:00
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hb_blob_make_immutable (hb_blob_t *blob)
|
2009-08-04 01:27:08 +00:00
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{
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2011-04-27 20:38:03 +00:00
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if (hb_object_is_inert (blob))
|
2009-08-06 17:33:51 +00:00
|
|
|
return;
|
|
|
|
|
2012-06-06 00:35:40 +00:00
|
|
|
blob->immutable = true;
|
2011-05-07 02:28:26 +00:00
|
|
|
}
|
2009-08-05 19:20:34 +00:00
|
|
|
|
2013-09-04 22:28:39 +00:00
|
|
|
/**
|
|
|
|
* hb_blob_is_immutable:
|
|
|
|
* @blob: a blob.
|
|
|
|
*
|
2018-04-20 05:59:06 +00:00
|
|
|
*
|
2013-09-04 22:28:39 +00:00
|
|
|
*
|
2013-09-06 19:40:22 +00:00
|
|
|
* Return value: TODO
|
2013-09-04 22:28:39 +00:00
|
|
|
*
|
2015-09-03 11:23:22 +00:00
|
|
|
* Since: 0.9.2
|
2013-09-04 22:28:39 +00:00
|
|
|
**/
|
2011-05-07 02:28:26 +00:00
|
|
|
hb_bool_t
|
|
|
|
hb_blob_is_immutable (hb_blob_t *blob)
|
|
|
|
{
|
|
|
|
return blob->immutable;
|
|
|
|
}
|
2009-08-06 17:33:51 +00:00
|
|
|
|
2009-11-06 01:08:17 +00:00
|
|
|
|
2013-09-04 22:28:39 +00:00
|
|
|
/**
|
|
|
|
* hb_blob_get_length:
|
|
|
|
* @blob: a blob.
|
|
|
|
*
|
2018-04-20 05:59:06 +00:00
|
|
|
*
|
2013-09-04 22:28:39 +00:00
|
|
|
*
|
2013-09-06 19:40:22 +00:00
|
|
|
* Return value: the length of blob data in bytes.
|
2013-09-04 22:28:39 +00:00
|
|
|
*
|
2015-09-03 11:23:22 +00:00
|
|
|
* Since: 0.9.2
|
2013-09-04 22:28:39 +00:00
|
|
|
**/
|
2011-05-07 02:28:26 +00:00
|
|
|
unsigned int
|
|
|
|
hb_blob_get_length (hb_blob_t *blob)
|
|
|
|
{
|
|
|
|
return blob->length;
|
2009-07-30 19:33:57 +00:00
|
|
|
}
|
|
|
|
|
2013-09-04 22:28:39 +00:00
|
|
|
/**
|
|
|
|
* hb_blob_get_data:
|
|
|
|
* @blob: a blob.
|
2013-09-06 19:40:22 +00:00
|
|
|
* @length: (out):
|
2013-09-04 22:28:39 +00:00
|
|
|
*
|
|
|
|
*
|
2018-04-20 05:59:06 +00:00
|
|
|
*
|
|
|
|
* Returns: (transfer none) (array length=length):
|
2013-09-04 22:28:39 +00:00
|
|
|
*
|
2015-09-03 11:23:22 +00:00
|
|
|
* Since: 0.9.2
|
2013-09-04 22:28:39 +00:00
|
|
|
**/
|
2011-05-07 02:28:26 +00:00
|
|
|
const char *
|
|
|
|
hb_blob_get_data (hb_blob_t *blob, unsigned int *length)
|
2009-07-30 19:33:57 +00:00
|
|
|
{
|
2011-05-07 02:28:26 +00:00
|
|
|
if (length)
|
|
|
|
*length = blob->length;
|
2009-08-06 17:33:51 +00:00
|
|
|
|
2011-05-07 02:28:26 +00:00
|
|
|
return blob->data;
|
|
|
|
}
|
2009-08-06 17:33:51 +00:00
|
|
|
|
2013-09-04 22:28:39 +00:00
|
|
|
/**
|
|
|
|
* hb_blob_get_data_writable:
|
|
|
|
* @blob: a blob.
|
|
|
|
* @length: (out): output length of the writable data.
|
|
|
|
*
|
|
|
|
* Tries to make blob data writable (possibly copying it) and
|
|
|
|
* return pointer to data.
|
|
|
|
*
|
|
|
|
* Fails if blob has been made immutable, or if memory allocation
|
|
|
|
* fails.
|
|
|
|
*
|
2013-09-06 19:40:22 +00:00
|
|
|
* Returns: (transfer none) (array length=length): Writable blob data,
|
|
|
|
* or %NULL if failed.
|
2013-09-04 22:28:39 +00:00
|
|
|
*
|
2015-09-03 11:23:22 +00:00
|
|
|
* Since: 0.9.2
|
2013-09-04 22:28:39 +00:00
|
|
|
**/
|
2011-05-07 02:28:26 +00:00
|
|
|
char *
|
|
|
|
hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length)
|
|
|
|
{
|
2018-05-04 02:14:54 +00:00
|
|
|
if (!blob->try_make_writable ()) {
|
2011-05-07 02:28:26 +00:00
|
|
|
if (length)
|
|
|
|
*length = 0;
|
2009-08-06 17:33:51 +00:00
|
|
|
|
2017-10-15 10:11:08 +00:00
|
|
|
return nullptr;
|
2011-05-07 02:28:26 +00:00
|
|
|
}
|
2009-08-06 17:33:51 +00:00
|
|
|
|
2011-05-07 02:28:26 +00:00
|
|
|
if (length)
|
|
|
|
*length = blob->length;
|
2009-08-06 17:33:51 +00:00
|
|
|
|
2011-05-07 02:28:26 +00:00
|
|
|
return const_cast<char *> (blob->data);
|
2009-07-30 19:33:57 +00:00
|
|
|
}
|
|
|
|
|
2009-08-18 19:49:23 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
bool
|
|
|
|
hb_blob_t::try_make_writable_inplace_unix (void)
|
2009-08-18 19:49:23 +00:00
|
|
|
{
|
|
|
|
#if defined(HAVE_SYS_MMAN_H) && defined(HAVE_MPROTECT)
|
2010-02-23 21:47:51 +00:00
|
|
|
uintptr_t pagesize = -1, mask, length;
|
2009-08-18 19:49:23 +00:00
|
|
|
const char *addr;
|
|
|
|
|
|
|
|
#if defined(HAVE_SYSCONF) && defined(_SC_PAGE_SIZE)
|
2010-02-23 21:47:51 +00:00
|
|
|
pagesize = (uintptr_t) sysconf (_SC_PAGE_SIZE);
|
2009-08-18 19:49:23 +00:00
|
|
|
#elif defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE)
|
2010-02-23 21:47:51 +00:00
|
|
|
pagesize = (uintptr_t) sysconf (_SC_PAGESIZE);
|
2009-08-18 19:49:23 +00:00
|
|
|
#elif defined(HAVE_GETPAGESIZE)
|
2010-02-23 21:47:51 +00:00
|
|
|
pagesize = (uintptr_t) getpagesize ();
|
2009-08-18 19:49:23 +00:00
|
|
|
#endif
|
|
|
|
|
2010-02-23 21:47:51 +00:00
|
|
|
if ((uintptr_t) -1L == pagesize) {
|
2018-05-04 02:14:54 +00:00
|
|
|
DEBUG_MSG_FUNC (BLOB, this, "failed to get pagesize: %s", strerror (errno));
|
2012-06-06 00:35:40 +00:00
|
|
|
return false;
|
2009-08-18 19:49:23 +00:00
|
|
|
}
|
2018-05-04 02:14:54 +00:00
|
|
|
DEBUG_MSG_FUNC (BLOB, this, "pagesize is %lu", (unsigned long) pagesize);
|
2009-08-18 19:49:23 +00:00
|
|
|
|
|
|
|
mask = ~(pagesize-1);
|
2018-05-04 02:14:54 +00:00
|
|
|
addr = (const char *) (((uintptr_t) this->data) & mask);
|
|
|
|
length = (const char *) (((uintptr_t) this->data + this->length + pagesize-1) & mask) - addr;
|
|
|
|
DEBUG_MSG_FUNC (BLOB, this,
|
2011-07-26 00:25:44 +00:00
|
|
|
"calling mprotect on [%p..%p] (%lu bytes)",
|
|
|
|
addr, addr+length, (unsigned long) length);
|
2009-08-18 19:49:23 +00:00
|
|
|
if (-1 == mprotect ((void *) addr, length, PROT_READ | PROT_WRITE)) {
|
2018-05-04 02:14:54 +00:00
|
|
|
DEBUG_MSG_FUNC (BLOB, this, "mprotect failed: %s", strerror (errno));
|
2012-06-06 00:35:40 +00:00
|
|
|
return false;
|
2009-08-18 19:49:23 +00:00
|
|
|
}
|
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
this->mode = HB_MEMORY_MODE_WRITABLE;
|
2011-05-07 02:28:26 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
DEBUG_MSG_FUNC (BLOB, this,
|
2011-07-26 00:25:44 +00:00
|
|
|
"successfully made [%p..%p] (%lu bytes) writable\n",
|
|
|
|
addr, addr+length, (unsigned long) length);
|
2012-06-06 00:35:40 +00:00
|
|
|
return true;
|
2009-08-18 19:49:23 +00:00
|
|
|
#else
|
2012-06-06 00:35:40 +00:00
|
|
|
return false;
|
2009-08-18 19:49:23 +00:00
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
bool
|
|
|
|
hb_blob_t::try_make_writable_inplace (void)
|
2009-08-19 20:45:41 +00:00
|
|
|
{
|
2018-05-04 02:14:54 +00:00
|
|
|
DEBUG_MSG_FUNC (BLOB, this, "making writable inplace\n");
|
2009-08-19 20:45:41 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
if (this->try_make_writable_inplace_unix ())
|
2012-06-06 00:35:40 +00:00
|
|
|
return true;
|
2011-05-07 02:28:26 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
DEBUG_MSG_FUNC (BLOB, this, "making writable -> FAILED\n");
|
2011-05-07 02:28:26 +00:00
|
|
|
|
|
|
|
/* Failed to make writable inplace, mark that */
|
2018-05-04 02:14:54 +00:00
|
|
|
this->mode = HB_MEMORY_MODE_READONLY;
|
2012-06-06 00:35:40 +00:00
|
|
|
return false;
|
2009-08-19 20:45:41 +00:00
|
|
|
}
|
2009-08-18 19:49:23 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
bool
|
|
|
|
hb_blob_t::try_make_writable (void)
|
2009-07-30 19:33:57 +00:00
|
|
|
{
|
2018-05-04 02:14:54 +00:00
|
|
|
if (this->immutable)
|
2012-06-06 00:35:40 +00:00
|
|
|
return false;
|
2009-08-04 01:27:08 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
if (this->mode == HB_MEMORY_MODE_WRITABLE)
|
2012-06-06 00:35:40 +00:00
|
|
|
return true;
|
2009-08-06 17:33:51 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
if (this->mode == HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE && this->try_make_writable_inplace ())
|
2012-06-06 00:35:40 +00:00
|
|
|
return true;
|
2010-04-23 17:48:06 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
if (this->mode == HB_MEMORY_MODE_WRITABLE)
|
2012-06-06 00:35:40 +00:00
|
|
|
return true;
|
2009-07-30 19:33:57 +00:00
|
|
|
|
2009-08-04 01:27:08 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
DEBUG_MSG_FUNC (BLOB, this, "current data is -> %p\n", this->data);
|
2011-05-07 02:28:26 +00:00
|
|
|
|
|
|
|
char *new_data;
|
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
new_data = (char *) malloc (this->length);
|
2011-05-07 02:28:26 +00:00
|
|
|
if (unlikely (!new_data))
|
2012-06-06 00:35:40 +00:00
|
|
|
return false;
|
2009-08-06 17:33:51 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
DEBUG_MSG_FUNC (BLOB, this, "dupped successfully -> %p\n", this->data);
|
2009-08-06 17:33:51 +00:00
|
|
|
|
2018-05-04 02:14:54 +00:00
|
|
|
memcpy (new_data, this->data, this->length);
|
|
|
|
this->destroy_user_data ();
|
|
|
|
this->mode = HB_MEMORY_MODE_WRITABLE;
|
|
|
|
this->data = new_data;
|
|
|
|
this->user_data = new_data;
|
|
|
|
this->destroy = free;
|
2011-05-07 02:28:26 +00:00
|
|
|
|
2012-06-06 00:35:40 +00:00
|
|
|
return true;
|
2009-07-30 19:33:57 +00:00
|
|
|
}
|
2018-04-20 05:59:06 +00:00
|
|
|
|
2018-05-04 01:10:57 +00:00
|
|
|
/*
|
|
|
|
* Mmap
|
|
|
|
*/
|
|
|
|
|
2018-05-11 09:10:33 +00:00
|
|
|
#ifdef HAVE_MMAP
|
2018-05-11 10:06:41 +00:00
|
|
|
# include <sys/types.h>
|
|
|
|
# include <sys/stat.h>
|
|
|
|
# include <fcntl.h>
|
2018-05-11 09:10:33 +00:00
|
|
|
#endif
|
|
|
|
|
2018-04-20 05:59:06 +00:00
|
|
|
#if defined(_WIN32) || defined(__CYGWIN__)
|
2018-05-11 10:06:41 +00:00
|
|
|
# include <windows.h>
|
2018-06-27 09:43:26 +00:00
|
|
|
#else
|
|
|
|
# ifndef _O_BINARY
|
|
|
|
# define _O_BINARY 0
|
|
|
|
# endif
|
2018-04-20 05:59:06 +00:00
|
|
|
#endif
|
|
|
|
|
2018-05-26 19:20:10 +00:00
|
|
|
#ifndef MAP_NORESERVE
|
|
|
|
# define MAP_NORESERVE 0
|
|
|
|
#endif
|
|
|
|
|
2018-04-20 05:59:06 +00:00
|
|
|
struct hb_mapped_file_t
|
|
|
|
{
|
|
|
|
char *contents;
|
|
|
|
unsigned long length;
|
|
|
|
#if defined(_WIN32) || defined(__CYGWIN__)
|
|
|
|
HANDLE mapping;
|
|
|
|
#endif
|
|
|
|
};
|
|
|
|
|
2018-07-03 08:34:05 +00:00
|
|
|
#if (defined(HAVE_MMAP) || defined(_WIN32) || defined(__CYGWIN__)) && !defined(HB_NO_MMAP)
|
2018-04-20 05:59:06 +00:00
|
|
|
static void
|
|
|
|
_hb_mapped_file_destroy (hb_mapped_file_t *file)
|
|
|
|
{
|
|
|
|
#ifdef HAVE_MMAP
|
|
|
|
munmap (file->contents, file->length);
|
|
|
|
#elif defined(_WIN32) || defined(__CYGWIN__)
|
|
|
|
UnmapViewOfFile (file->contents);
|
|
|
|
CloseHandle (file->mapping);
|
|
|
|
#else
|
2018-06-25 17:53:43 +00:00
|
|
|
assert (0); // If we don't have mmap we shouldn't reach here
|
2018-04-20 05:59:06 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
free (file);
|
|
|
|
}
|
2018-07-03 08:34:05 +00:00
|
|
|
#endif
|
2018-04-20 05:59:06 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* hb_blob_create_from_file:
|
|
|
|
* @file_name: font filename.
|
|
|
|
*
|
|
|
|
* Returns: A hb_blob_t pointer with the content of the file
|
|
|
|
*
|
2018-06-05 22:17:39 +00:00
|
|
|
* Since: 1.7.7
|
2018-04-20 05:59:06 +00:00
|
|
|
**/
|
|
|
|
hb_blob_t *
|
|
|
|
hb_blob_create_from_file (const char *file_name)
|
|
|
|
{
|
2018-06-30 21:24:14 +00:00
|
|
|
/* Adopted from glib's gmappedfile.c with Matthias Clasen and
|
|
|
|
Allison Lortie permission but changed a lot to suit our need. */
|
|
|
|
#if defined(HAVE_MMAP) && !defined(HB_NO_MMAP)
|
2018-05-11 09:10:33 +00:00
|
|
|
hb_mapped_file_t *file = (hb_mapped_file_t *) calloc (1, sizeof (hb_mapped_file_t));
|
|
|
|
if (unlikely (!file)) return hb_blob_get_empty ();
|
2018-04-20 05:59:06 +00:00
|
|
|
|
2018-06-25 17:53:43 +00:00
|
|
|
int fd = open (file_name, O_RDONLY | _O_BINARY, 0);
|
2018-05-11 09:10:33 +00:00
|
|
|
if (unlikely (fd == -1)) goto fail_without_close;
|
2018-04-20 05:59:06 +00:00
|
|
|
|
|
|
|
struct stat st;
|
|
|
|
if (unlikely (fstat (fd, &st) == -1)) goto fail;
|
|
|
|
|
|
|
|
file->length = (unsigned long) st.st_size;
|
2018-06-25 17:53:43 +00:00
|
|
|
file->contents = (char *) mmap (nullptr, file->length, PROT_READ,
|
2018-05-26 19:20:10 +00:00
|
|
|
MAP_PRIVATE | MAP_NORESERVE, fd, 0);
|
2018-05-11 09:10:33 +00:00
|
|
|
|
2018-06-25 17:53:43 +00:00
|
|
|
if (unlikely (file->contents == MAP_FAILED)) goto fail;
|
2018-05-11 09:10:33 +00:00
|
|
|
|
2018-06-25 17:53:43 +00:00
|
|
|
close (fd);
|
|
|
|
|
|
|
|
return hb_blob_create (file->contents, file->length,
|
|
|
|
HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE, (void *) file,
|
|
|
|
(hb_destroy_func_t) _hb_mapped_file_destroy);
|
|
|
|
|
|
|
|
fail:
|
|
|
|
close (fd);
|
|
|
|
fail_without_close:
|
|
|
|
free (file);
|
|
|
|
|
2018-06-30 21:24:14 +00:00
|
|
|
#elif (defined(_WIN32) || defined(__CYGWIN__)) && !defined(HB_NO_MMAP)
|
2018-06-25 17:53:43 +00:00
|
|
|
hb_mapped_file_t *file = (hb_mapped_file_t *) calloc (1, sizeof (hb_mapped_file_t));
|
|
|
|
if (unlikely (!file)) return hb_blob_get_empty ();
|
|
|
|
|
2018-07-04 11:03:39 +00:00
|
|
|
HANDLE fd;
|
|
|
|
unsigned int size = strlen (file_name) + 1;
|
|
|
|
wchar_t * wchar_file_name = (wchar_t *) malloc (sizeof (wchar_t) * size);
|
|
|
|
if (unlikely (wchar_file_name == nullptr)) goto fail_without_close;
|
|
|
|
mbstowcs (wchar_file_name, file_name, size);
|
|
|
|
fd = CreateFileW (wchar_file_name, GENERIC_READ, FILE_SHARE_READ, nullptr,
|
|
|
|
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED,
|
|
|
|
nullptr);
|
|
|
|
free (wchar_file_name);
|
2018-05-11 09:10:33 +00:00
|
|
|
|
|
|
|
if (unlikely (fd == INVALID_HANDLE_VALUE)) goto fail_without_close;
|
|
|
|
|
|
|
|
file->length = (unsigned long) GetFileSize (fd, nullptr);
|
2018-06-25 17:53:43 +00:00
|
|
|
file->mapping = CreateFileMapping (fd, nullptr, PAGE_READONLY, 0, 0, nullptr);
|
2018-04-20 05:59:06 +00:00
|
|
|
if (unlikely (file->mapping == nullptr)) goto fail;
|
|
|
|
|
2018-06-25 17:53:43 +00:00
|
|
|
file->contents = (char *) MapViewOfFile (file->mapping, FILE_MAP_READ, 0, 0, 0);
|
2018-05-11 09:10:33 +00:00
|
|
|
if (unlikely (file->contents == nullptr)) goto fail;
|
|
|
|
|
2018-06-25 17:53:43 +00:00
|
|
|
CloseHandle (fd);
|
|
|
|
return hb_blob_create (file->contents, file->length,
|
|
|
|
HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE, (void *) file,
|
|
|
|
(hb_destroy_func_t) _hb_mapped_file_destroy);
|
2018-05-11 09:10:33 +00:00
|
|
|
|
2018-06-25 17:53:43 +00:00
|
|
|
fail:
|
|
|
|
CloseHandle (fd);
|
|
|
|
fail_without_close:
|
|
|
|
free (file);
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
2018-06-30 21:24:14 +00:00
|
|
|
/* The following tries to read a file without knowing its size beforehand
|
|
|
|
It's used as a fallback for systems without mmap or to read from pipes */
|
2018-06-27 09:43:26 +00:00
|
|
|
unsigned long len = 0, allocated = BUFSIZ * 16;
|
2018-06-27 12:24:44 +00:00
|
|
|
char *data = (char *) malloc (allocated);
|
|
|
|
if (unlikely (data == nullptr)) return hb_blob_get_empty ();
|
2018-05-11 09:10:33 +00:00
|
|
|
|
2018-06-25 17:53:43 +00:00
|
|
|
FILE *fp = fopen (file_name, "rb");
|
|
|
|
if (unlikely (fp == nullptr)) goto fread_fail_without_close;
|
2018-05-11 09:10:33 +00:00
|
|
|
|
2018-06-25 17:53:43 +00:00
|
|
|
while (!feof (fp))
|
|
|
|
{
|
|
|
|
if (allocated - len < BUFSIZ)
|
|
|
|
{
|
|
|
|
allocated *= 2;
|
2018-06-30 21:24:14 +00:00
|
|
|
/* Don't allocate and go more than ~536MB, our mmap reader still
|
|
|
|
can cover files like that but lets limit our fallback reader */
|
2018-06-27 09:43:26 +00:00
|
|
|
if (unlikely (allocated > (2 << 28))) goto fread_fail;
|
2018-06-27 12:24:44 +00:00
|
|
|
char *new_data = (char *) realloc (data, allocated);
|
|
|
|
if (unlikely (new_data == nullptr)) goto fread_fail;
|
|
|
|
data = new_data;
|
2018-06-25 17:53:43 +00:00
|
|
|
}
|
2018-05-11 09:10:33 +00:00
|
|
|
|
2018-06-27 12:24:44 +00:00
|
|
|
unsigned long addition = fread (data + len, 1, allocated - len, fp);
|
2018-06-27 09:43:26 +00:00
|
|
|
|
|
|
|
int err = ferror (fp);
|
2018-06-28 10:02:36 +00:00
|
|
|
#ifdef EINTR // armcc doesn't have it
|
2018-06-27 09:43:26 +00:00
|
|
|
if (unlikely (err == EINTR)) continue;
|
2018-06-28 10:02:36 +00:00
|
|
|
#endif
|
2018-06-28 08:52:21 +00:00
|
|
|
if (unlikely (err)) goto fread_fail;
|
2018-06-27 09:43:26 +00:00
|
|
|
|
|
|
|
len += addition;
|
2018-06-25 17:53:43 +00:00
|
|
|
}
|
2018-04-20 05:59:06 +00:00
|
|
|
|
2018-06-27 12:24:44 +00:00
|
|
|
return hb_blob_create (data, len, HB_MEMORY_MODE_WRITABLE, data,
|
2018-06-25 17:53:43 +00:00
|
|
|
(hb_destroy_func_t) free);
|
2018-04-20 05:59:06 +00:00
|
|
|
|
2018-06-25 17:53:43 +00:00
|
|
|
fread_fail:
|
|
|
|
fclose (fp);
|
|
|
|
fread_fail_without_close:
|
2018-06-27 12:24:44 +00:00
|
|
|
free (data);
|
2018-04-20 05:59:06 +00:00
|
|
|
return hb_blob_get_empty ();
|
|
|
|
}
|