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libisofs
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Added iso_image_update_sizes() API. 

This requires increasing IsoStreamIface version, as we need to add a new 
method on it. API/ABI remains compatible with older version.
This commit is contained in:
Vreixo Formoso 2008-09-07 16:32:18 +02:00
parent e79ee64a2f
commit 68419703d7
5 changed files with 135 additions and 24 deletions
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2
.settings/org.eclipse.cdt.core.prefs
View File

@ -1,4 +1,4 @@
#Tue Aug 19 23:58:44 CEST 2008
#Sat Sep 06 00:52:28 CEST 2008
eclipse.preferences.version=1
indexer/filesToParseUpFront=
indexer/indexAllFiles=true

18
demo/iso.c
View File

@ -91,7 +91,7 @@ int main(int argc, char **argv)
break;
}
}
if (argc < 2) {
printf ("Please pass directory from which to build ISO\n");
usage(argv);
@ -102,7 +102,7 @@ int main(int argc, char **argv)
usage(argv);
return 1;
}
fd = fopen(argv[optind+1], "w");
if (!fd) {
err(1, "error opening output file");
@ -114,7 +114,7 @@ int main(int argc, char **argv)
return 1;
}
iso_set_msgs_severities("NEVER", "ALL", "");
result = iso_image_new(volid, &image);
if (result < 0) {
printf ("Error creating image\n");
@ -125,13 +125,13 @@ int main(int argc, char **argv)
iso_tree_set_ignore_special(image, 0);
iso_set_abort_severity("SORRY");
/*iso_tree_set_report_callback(image, callback);*/
result = iso_tree_add_dir_rec(image, iso_image_get_root(image), argv[optind]);
if (result < 0) {
printf ("Error adding directory %d\n", result);
return 1;
}
if (boot_img) {
/* adds El-Torito boot info. Tunned for isolinux */
ElToritoBootImage *bootimg;
@ -154,22 +154,22 @@ int main(int argc, char **argv)
iso_write_opts_set_rockridge(opts, rr);
iso_write_opts_set_joliet(opts, j);
iso_write_opts_set_iso1999(opts, iso1999);
result = iso_image_create_burn_source(image, opts, &burn_src);
if (result < 0) {
printf ("Cant create image, error %d\n", result);
return 1;
}
iso_write_opts_free(opts);
while (burn_src->read_xt(burn_src, buf, 2048) == 2048) {
fwrite(buf, 1, 2048, fd);
}
fclose(fd);
burn_src->free_data(burn_src);
free(burn_src);
iso_image_unref(image);
iso_finish();
return 0;

51
libisofs/image.c
View File

@ -1,8 +1,8 @@
/*
* Copyright (c) 2007 Vreixo Formoso
*
* This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2 as
*
* This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See COPYING file for details.
*/
@ -17,9 +17,9 @@
/**
* Create a new image, empty.
*
*
* The image will be owned by you and should be unref() when no more needed.
*
*
* @param name
* Name of the image. This will be used as volset_id and volume_id.
* @param image
@ -85,7 +85,7 @@ void iso_image_ref(IsoImage *image)
/**
* Decrements the reference couting of the given image.
* If it reaches 0, the image is free, together with its tree nodes (whether
* If it reaches 0, the image is free, together with its tree nodes (whether
* their refcount reach 0 too, of course).
*/
void iso_image_unref(IsoImage *image)
@ -125,7 +125,7 @@ void iso_image_unref(IsoImage *image)
* Attach user defined data to the image. Use this if your application needs
* to store addition info together with the IsoImage. If the image already
* has data attached, the old data will be freed.
*
*
* @param data
* Pointer to application defined data that will be attached to the
* image. You can pass NULL to remove any already attached data.
@ -139,7 +139,7 @@ int iso_image_attach_data(IsoImage *image, void *data, void (*give_up)(void*))
if (image == NULL || (data != NULL && free == NULL)) {
return ISO_NULL_POINTER;
}
if (image->user_data != NULL) {
/* free previously attached data */
if (image->user_data_free) {
@ -148,7 +148,7 @@ int iso_image_attach_data(IsoImage *image, void *data, void (*give_up)(void*))
image->user_data = NULL;
image->user_data_free = NULL;
}
if (data != NULL) {
image->user_data = data;
image->user_data_free = give_up;
@ -275,3 +275,36 @@ int iso_image_get_msg_id(IsoImage *image)
{
return image->id;
}
static
int dir_update_size(IsoImage *image, IsoDir *dir)
{
IsoNode *pos;
pos = dir->children;
while (pos) {
int ret = 1;
if (pos->type == LIBISO_FILE) {
ret = iso_stream_update_size(ISO_FILE(pos)->stream);
} else if (pos->type == LIBISO_DIR) {
/* recurse */
ret = dir_update_size(image, ISO_DIR(pos));
}
if (ret < 0) {
ret = iso_msg_submit(image->id, ret, 0, NULL);
if (ret < 0) {
return ret; /* cancel due error threshold */
}
}
pos = pos->next;
}
return ISO_SUCCESS;
}
int iso_image_update_sizes(IsoImage *image)
{
if (image == NULL) {
return ISO_NULL_POINTER;
}
return dir_update_size(image, image->root);
}

53
libisofs/libisofs.h
View File

@ -713,7 +713,12 @@ extern ino_t serial_id;
*/
struct IsoStream_Iface
{
/* reserved for future usage, set to 0 */
/*
* Current version of the interface, set to 1.
*
* -version 1 (since 0.6.8)
* update_size() added.
*/
int version;
/**
@ -743,7 +748,8 @@ struct IsoStream_Iface
/**
* Get the size (in bytes) of the stream. This function should always
* return the same size, even if the underlying source size changes.
* return the same size, even if the underlying source size changes,
* unless you call update_size() method.
*/
off_t (*get_size)(IsoStream *stream);
@ -785,6 +791,21 @@ struct IsoStream_Iface
* Use iso_stream_unref() instead.
*/
void (*free)(IsoStream *stream);
/**
* Updates the size of the IsoStream with the current size of the
* underlying source. After calling this, get_size() will return
* the new size. This should never be called after
* iso_image_create_burn_source() was called and the image was not
* completely written. To update the size of all files before written the
* image, you may want to call iso_image_update_sizes() just before
* iso_image_create_burn_source().
*
* @return
* 1 if ok, < 0 on error (has to be a valid libisofs error code)
* @since 0.6.8
*/
int (*update_size)(IsoStream *stream);
};
/**
@ -1318,6 +1339,20 @@ int iso_write_opts_set_fifo_size(IsoWriteOpts *opts, size_t fifo_size);
int iso_image_create_burn_source(IsoImage *image, IsoWriteOpts *opts,
struct burn_source **burn_src);
/**
* Update the sizes of all files added to image.
*
* This may be called just before iso_image_create_burn_source() to force
* libisofs to check the file sizes again (they're already checked when added
* to IsoImage). It is useful if you have changed some files after adding then
* to the image.
*
* @return
* 1 on success, < 0 on error
* @since 0.6.8
*/
int iso_image_update_sizes(IsoImage *image);
/**
* Creates an IsoReadOpts for reading an existent image. You should set the
* options desired with the correspondent setters. Note that you may want to
@ -3660,7 +3695,8 @@ int iso_stream_close(IsoStream *stream);
/**
* Get the size of a given stream. This function should always return the same
* size, even if the underlying source size changes.
* size, even if the underlying source size changes, unless you call
* iso_stream_update_size().
*
* @return
* IsoStream size in bytes
@ -3699,6 +3735,17 @@ int iso_stream_read(IsoStream *stream, void *buf, size_t count);
*/
int iso_stream_is_repeatable(IsoStream *stream);
/**
* Updates the size of the IsoStream with the current size of the
* underlying source.
*
* @return
* 1 if ok, < 0 on error (has to be a valid libisofs error code),
* 0 if the IsoStream does not support this function.
* @since 0.6.8
*/
int iso_stream_update_size(IsoStream *stream);
/**
* Get an unique identifier for a given IsoStream.
*

35
libisofs/stream.c
View File

@ -124,8 +124,28 @@ void fsrc_free(IsoStream *stream)
free(data);
}
static
int fsrc_update_size(IsoStream *stream)
{
int ret;
struct stat info;
IsoFileSource *src;
if (stream == NULL) {
return ISO_NULL_POINTER;
}
src = ((FSrcStreamData*)stream->data)->src;
ret = iso_file_source_stat(src, &info);
if (ret < 0) {
return ret;
}
((FSrcStreamData*)stream->data)->size = info.st_size;
return ISO_SUCCESS;
}
IsoStreamIface fsrc_stream_class = {
0,
1, /* update_size is defined for this stream */
"fsrc",
fsrc_open,
fsrc_close,
@ -133,7 +153,8 @@ IsoStreamIface fsrc_stream_class = {
fsrc_read,
fsrc_is_repeatable,
fsrc_get_id,
fsrc_free
fsrc_free,
fsrc_update_size
};
int iso_file_source_stream_new(IsoFileSource *src, IsoStream **stream)
@ -317,6 +338,9 @@ void cut_out_free(IsoStream *stream)
free(data);
}
/*
* TODO update cut out streams to deal with update_size(). Seems hard.
*/
IsoStreamIface cut_out_stream_class = {
0,
"cout",
@ -587,6 +611,13 @@ int iso_stream_is_repeatable(IsoStream *stream)
return stream->class->is_repeatable(stream);
}
inline
int iso_stream_update_size(IsoStream *stream)
{
IsoStreamIface* class = stream->class;
return (class->version >= 1) ? class->update_size(stream) : 0;
}
inline
void iso_stream_get_id(IsoStream *stream, unsigned int *fs_id, dev_t *dev_id,
ino_t *ino_id)