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Add new API to deal with isolinux options.

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This deprecates el_torito_patch_isolinux_image() in favour of the new API, that also
allows the generation of an hybrid boot image.
This commit is contained in:
Vreixo Formoso 2008-10-19 16:00:51 +02:00
parent 186c2f2ff7
commit 7db39f99b6
2 changed files with 55 additions and 3 deletions
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33
libisofs/eltorito.c
View File

@ -93,7 +93,34 @@ void el_torito_set_no_bootable(ElToritoBootImage *bootimg)
*/
void el_torito_patch_isolinux_image(ElToritoBootImage *bootimg)
{
bootimg->isolinux = 1;
bootimg->isolinux_options |= 0x01;
}
/**
* Specifies options for IsoLinux boot images. This should only be used with
* isolinux boot images.
*
* @param options
* bitmask style flag. The following values are defined:
*
* bit 0 -> 1 to path the image, 0 to not
* Patching the image involves the writting of a 56 bytes
* boot information table at offset 8 of the boot image file.
* The original boot image file won't be modified. This is needed
* to allow isolinux images to be bootable.
* bit 1 -> 1 to generate an hybrid image, 0 to not
* An hybrid image is a boot image that boots from either CD/DVD
* media or from USB sticks. For that, you should use an isolinux
* image that supports hybrid mode. Recent images support this.
* @return
* 1 if success, < 0 on error
* @since 0.6.12
*/
int el_torito_set_isolinux_options(ElToritoBootImage *bootimg, int options, int flag)
{
bootimg->isolinux_options = (options & 0x03);
return ISO_SUCCESS;
}
/* TODO getter for boot image properties should be exposed
@ -805,7 +832,7 @@ int eltorito_writer_compute_data_blocks(IsoImageWriter *writer)
t = writer->target;
if (t->catalog->image->isolinux) {
if (t->catalog->image->isolinux_options & 0x01) {
/* we need to patch the image */
size_t size;
uint8_t *buf;
@ -928,7 +955,7 @@ int eltorito_writer_create(Ecma119Image *target)
target->bootimg = src;
/* if we have selected to patch the image, it needs to be copied always */
if (target->catalog->image->isolinux) {
if (target->catalog->image->isolinux_options & 0x01) {
src->prev_img = 0;
}

25
libisofs/libisofs.h
View File

@ -1865,9 +1865,34 @@ void el_torito_set_no_bootable(ElToritoBootImage *bootimg);
* This is needed for isolinux boot images.
*
* @since 0.6.2
* @deprecated Use el_torito_set_isolinux_options() instead
*/
void el_torito_patch_isolinux_image(ElToritoBootImage *bootimg);
/**
* Specifies options for IsoLinux boot images. This should only be used with
* isolinux boot images.
*
* @param options
* bitmask style flag. The following values are defined:
*
* bit 0 -> 1 to path the image, 0 to not
* Patching the image involves the writting of a 56 bytes
* boot information table at offset 8 of the boot image file.
* The original boot image file won't be modified. This is needed
* to allow isolinux images to be bootable.
* bit 1 -> 1 to generate an hybrid image, 0 to not
* An hybrid image is a boot image that boots from either CD/DVD
* media or from USB sticks. For that, you should use an isolinux
* image that supports hybrid mode. Recent images support this.
* @param flag
* Reserved for future usage, set to 0.
* @return
* 1 success, < 0 on error
* @since 0.6.12
*/
int el_torito_set_isolinux_options(ElToritoBootImage *bootimg, int options, int flag);
/**
* Increments the reference counting of the given node.
*