278 lines
6.9 KiB
C
278 lines
6.9 KiB
C
/*
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* Copyright (c) 2007 Vreixo Formoso
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*
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* This file is part of the libisofs project; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. See COPYING file for details.
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*/
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#include "libisofs.h"
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#include "image.h"
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#include "node.h"
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#include "messages.h"
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#include "eltorito.h"
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#include <stdlib.h>
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#include <string.h>
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/**
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* Create a new image, empty.
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*
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* The image will be owned by you and should be unref() when no more needed.
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*
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* @param name
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* Name of the image. This will be used as volset_id and volume_id.
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* @param image
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* Location where the image pointer will be stored.
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* @return
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* 1 sucess, < 0 error
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*/
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int iso_image_new(const char *name, IsoImage **image)
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{
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int res;
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IsoImage *img;
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if (image == NULL) {
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return ISO_NULL_POINTER;
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}
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img = calloc(1, sizeof(IsoImage));
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if (img == NULL) {
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return ISO_OUT_OF_MEM;
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}
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/* local filesystem will be used by default */
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res = iso_local_filesystem_new(&(img->fs));
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if (res < 0) {
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free(img);
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return ISO_OUT_OF_MEM;
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}
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/* use basic builder as default */
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res = iso_node_basic_builder_new(&(img->builder));
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if (res < 0) {
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iso_filesystem_unref(img->fs);
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free(img);
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return ISO_OUT_OF_MEM;
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}
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/* fill image fields */
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res = iso_node_new_root(&img->root);
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if (res < 0) {
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iso_node_builder_unref(img->builder);
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iso_filesystem_unref(img->fs);
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free(img);
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return res;
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}
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img->refcount = 1;
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img->id = iso_message_id++;
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if (name != NULL) {
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img->volset_id = strdup(name);
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img->volume_id = strdup(name);
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}
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*image = img;
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return ISO_SUCCESS;
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}
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/**
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* Increments the reference counting of the given image.
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*/
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void iso_image_ref(IsoImage *image)
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{
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++image->refcount;
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}
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/**
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* Decrements the reference couting of the given image.
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* If it reaches 0, the image is free, together with its tree nodes (whether
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* their refcount reach 0 too, of course).
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*/
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void iso_image_unref(IsoImage *image)
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{
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if (--image->refcount == 0) {
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int nexcl;
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/* we need to free the image */
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if (image->user_data_free != NULL) {
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/* free attached data */
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image->user_data_free(image->user_data);
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}
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for (nexcl = 0; nexcl < image->nexcludes; ++nexcl) {
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free(image->excludes[nexcl]);
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}
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free(image->excludes);
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iso_node_unref((IsoNode*)image->root);
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iso_node_builder_unref(image->builder);
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iso_filesystem_unref(image->fs);
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el_torito_boot_catalog_free(image->bootcat);
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free(image->volset_id);
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free(image->volume_id);
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free(image->publisher_id);
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free(image->data_preparer_id);
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free(image->system_id);
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free(image->application_id);
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free(image->copyright_file_id);
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free(image->abstract_file_id);
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free(image->biblio_file_id);
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free(image);
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}
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}
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/**
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* Attach user defined data to the image. Use this if your application needs
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* to store addition info together with the IsoImage. If the image already
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* has data attached, the old data will be freed.
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*
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* @param data
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* Pointer to application defined data that will be attached to the
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* image. You can pass NULL to remove any already attached data.
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* @param give_up
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* Function that will be called when the image does not need the data
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* any more. It receives the data pointer as an argumente, and eventually
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* causes data to be free. It can be NULL if you don't need it.
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*/
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int iso_image_attach_data(IsoImage *image, void *data, void (*give_up)(void*))
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{
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if (image == NULL || (data != NULL && free == NULL)) {
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return ISO_NULL_POINTER;
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}
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if (image->user_data != NULL) {
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/* free previously attached data */
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if (image->user_data_free) {
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image->user_data_free(image->user_data);
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}
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image->user_data = NULL;
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image->user_data_free = NULL;
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}
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if (data != NULL) {
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image->user_data = data;
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image->user_data_free = give_up;
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}
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return ISO_SUCCESS;
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}
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/**
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* The the data previously attached with iso_image_attach_data()
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*/
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void *iso_image_get_attached_data(IsoImage *image)
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{
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return image->user_data;
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}
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IsoDir *iso_image_get_root(const IsoImage *image)
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{
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return image->root;
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}
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void iso_image_set_volset_id(IsoImage *image, const char *volset_id)
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{
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free(image->volset_id);
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image->volset_id = strdup(volset_id);
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}
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const char *iso_image_get_volset_id(const IsoImage *image)
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{
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return image->volset_id;
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}
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void iso_image_set_volume_id(IsoImage *image, const char *volume_id)
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{
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free(image->volume_id);
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image->volume_id = strdup(volume_id);
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}
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const char *iso_image_get_volume_id(const IsoImage *image)
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{
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return image->volume_id;
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}
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void iso_image_set_publisher_id(IsoImage *image, const char *publisher_id)
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{
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free(image->publisher_id);
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image->publisher_id = strdup(publisher_id);
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}
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const char *iso_image_get_publisher_id(const IsoImage *image)
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{
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return image->publisher_id;
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}
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void iso_image_set_data_preparer_id(IsoImage *image,
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const char *data_preparer_id)
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{
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free(image->data_preparer_id);
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image->data_preparer_id = strdup(data_preparer_id);
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}
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const char *iso_image_get_data_preparer_id(const IsoImage *image)
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{
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return image->data_preparer_id;
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}
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void iso_image_set_system_id(IsoImage *image, const char *system_id)
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{
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free(image->system_id);
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image->system_id = strdup(system_id);
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}
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const char *iso_image_get_system_id(const IsoImage *image)
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{
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return image->system_id;
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}
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void iso_image_set_application_id(IsoImage *image, const char *application_id)
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{
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free(image->application_id);
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image->application_id = strdup(application_id);
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}
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const char *iso_image_get_application_id(const IsoImage *image)
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{
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return image->application_id;
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}
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void iso_image_set_copyright_file_id(IsoImage *image,
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const char *copyright_file_id)
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{
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free(image->copyright_file_id);
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image->copyright_file_id = strdup(copyright_file_id);
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}
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const char *iso_image_get_copyright_file_id(const IsoImage *image)
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{
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return image->copyright_file_id;
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}
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void iso_image_set_abstract_file_id(IsoImage *image,
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const char *abstract_file_id)
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{
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free(image->abstract_file_id);
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image->abstract_file_id = strdup(abstract_file_id);
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}
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const char *iso_image_get_abstract_file_id(const IsoImage *image)
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{
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return image->abstract_file_id;
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}
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void iso_image_set_biblio_file_id(IsoImage *image, const char *biblio_file_id)
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{
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free(image->biblio_file_id);
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image->biblio_file_id = strdup(biblio_file_id);
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}
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const char *iso_image_get_biblio_file_id(const IsoImage *image)
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{
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return image->biblio_file_id;
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}
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int iso_image_get_msg_id(IsoImage *image)
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{
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return image->id;
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}
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