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2005 lines
66 KiB
C
2005 lines
66 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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#ifndef LIBISO_LIBISOFS_H_
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#define LIBISO_LIBISOFS_H_
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#include <sys/stat.h>
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#include <stdint.h>
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struct burn_source;
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typedef struct Iso_Image IsoImage;
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typedef struct Iso_Node IsoNode;
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typedef struct Iso_Dir IsoDir;
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typedef struct Iso_Symlink IsoSymlink;
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typedef struct Iso_File IsoFile;
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typedef struct Iso_Special IsoSpecial;
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typedef struct Iso_Dir_Iter IsoDirIter;
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typedef struct el_torito_boot_image ElToritoBootImage;
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typedef struct Iso_Boot IsoBoot;
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/**
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* The type of an IsoNode.
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*
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* When an user gets an IsoNode from an image, (s)he can use
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* iso_node_get_type() to get the current type of the node, and then
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* cast to the appropriate subtype. For example:
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*
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* ...
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* IsoNode *node;
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* res = iso_dir_iter_next(iter, &node);
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* if (res == 1 && iso_node_get_type(node) == LIBISO_DIR) {
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* IsoDir *dir = (IsoDir *)node;
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* ...
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* }
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*/
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enum IsoNodeType {
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LIBISO_DIR,
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LIBISO_FILE,
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LIBISO_SYMLINK,
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LIBISO_SPECIAL,
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LIBISO_BOOT
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};
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/**
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* Flag used to hide a file in the RR/ISO or Joliet tree.
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*
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* \see iso_node_set_hidden
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*/
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enum IsoHideNodeFlag {
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/** Hide the node in the ECMA-119 / RR tree */
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LIBISO_HIDE_ON_RR = 1 << 0,
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/** Hide the node in the Joliet tree, if Joliet extension are enabled */
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LIBISO_HIDE_ON_JOLIET = 1 << 1,
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/** Hide the node in the ISO-9660:1999 tree, if that format is enabled */
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LIBISO_HIDE_ON_1999 = 1 << 2
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};
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/**
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* El-Torito bootable image type.
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*/
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enum eltorito_boot_media_type {
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ELTORITO_FLOPPY_EMUL,
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ELTORITO_HARD_DISC_EMUL,
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ELTORITO_NO_EMUL
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};
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/**
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* Replace mode used when addding a node to a file.
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* TODO comment
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*/
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enum iso_replace_mode {
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/**
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* Never replace an existing node, and instead fail with
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* ISO_NODE_NAME_NOT_UNIQUE.
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*/
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ISO_REPLACE_NEVER,
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/**
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* Always replace the old node with the new.
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*/
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ISO_REPLACE_ALWAYS
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/*
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* TODO #00006 define more values
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* -to replace only if both are the same kind of file
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* -if both are dirs, add contents (and what to do with conflicts?)
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*/
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};
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typedef struct ecma119_write_opts Ecma119WriteOpts;
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/**
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* Holds the options for the image generation.
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*/
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struct ecma119_write_opts {
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int level; /**< ISO level to write at. */
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/** Which extensions to support. */
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unsigned int rockridge :1;
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unsigned int joliet :1;
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unsigned int iso1999 :1;
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/*
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* Relaxed constraints. Setting any of these to 1 break the specifications,
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* but it is supposed to work on most moderns systems. Use with caution.
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*/
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/**
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* Omit the version number (";1") at the end of the ISO-9660 identifiers.
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* Version numbers are usually not used.
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*/
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unsigned int omit_version_numbers :1;
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/**
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* Allow ISO-9660 directory hierarchy to be deeper than 8 levels.
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*/
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unsigned int allow_deep_paths :1;
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/**
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* Allow path in the ISO-9660 tree to have more than 255 characters.
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*/
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unsigned int allow_longer_paths :1;
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/**
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* Allow a single file or directory hierarchy to have up to 37 characters.
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* This is larger than the 31 characters allowed by ISO level 2, and the
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* extra space is taken from the version number, so this also forces
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* omit_version_numbers.
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*/
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unsigned int max_37_char_filenames :1;
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/**
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* ISO-9660 forces filenames to have a ".", that separates file name from
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* extension. libisofs adds it if original filename doesn't has one. Set
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* this to 1 to prevent this behavior
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*/
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unsigned int no_force_dots :1;
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/**
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* Allow lowercase characters in ISO-9660 filenames. By default, only
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* uppercase characters, numbers and a few other characters are allowed.
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*/
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unsigned int allow_lowercase :1;
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/**
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* Allow all ASCII characters to be appear on an ISO-9660 filename. Note
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* that "/" and "\0" characters are never allowed, even in RR names.
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*/
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unsigned int allow_full_ascii :1;
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/**
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* Allow paths in the Joliet tree to have more than 240 characters.
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*/
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unsigned int joliet_longer_paths :1;
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/**< If files should be sorted based on their weight. */
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unsigned int sort_files :1;
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/**
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* The following options set the default values for files and directory
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* permissions, gid and uid. All these take one of three values: 0, 1 or 2.
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* If 0, the corresponding attribute will be kept as setted in the IsoNode.
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* Unless you have changed it, it corresponds to the value on disc, so it
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* is suitable for backup purposes. If set to 1, the corresponding attrib.
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* will be changed by a default suitable value. Finally, if you set it to
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* 2, the attrib. will be changed with the value specified in the options
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* below. Note that for mode attributes, only the permissions are set, the
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* file type remains unchanged.
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*/
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unsigned int replace_dir_mode :2;
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unsigned int replace_file_mode :2;
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unsigned int replace_uid :2;
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unsigned int replace_gid :2;
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mode_t dir_mode; /** Mode to use on dirs when replace_dir_mode == 2. */
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mode_t file_mode; /** Mode to use on files when replace_file_mode == 2. */
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uid_t uid; /** uid to use when replace_uid == 2. */
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gid_t gid; /** gid to use when replace_gid == 2. */
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/**
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* 0 to use IsoNode timestamps, 1 to use recording time, 2 to use
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* values from timestamp field. This has only meaning if RR extensions
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* are enabled.
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*/
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unsigned int replace_timestamps :2;
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time_t timestamp;
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/**
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* Charset for the RR filenames that will be created.
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* NULL to use default charset, the locale one.
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*/
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char *output_charset;
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/**
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* This flags control the type of the image to create. Libisofs support
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* two kind of images: stand-alone and appendable.
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*
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* A stand-alone image is an image that is valid alone, and that can be
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* mounted by its own. This is the kind of image you will want to create
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* in most cases. A stand-alone image can be burned in an empty CD or DVD,
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* or write to an .iso file for future burning or distribution.
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*
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* On the other side, an appendable image is not self contained, it refers
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* to serveral files that are stored outside the image. Its usage is for
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* multisession discs, where you add data in a new session, while the
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* previous session data can still be accessed. In those cases, the old
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* data is not written again. Instead, the new image refers to it, and thus
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* it's only valid when appended to the original. Note that in those cases
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* the image will be written after the original, and thus you will want
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* to use a ms_block greater than 0.
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*
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* Note that if you haven't import a previous image (by means of
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* iso_image_import()), the image will always be a stand-alone image, as
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* there is no previous data to refer to.
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*/
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unsigned int appendable : 1;
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/**
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* Start block of the image. It is supposed to be the lba where the first
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* block of the image will be written on disc. All references inside the
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* ISO image will take this into account, thus providing a mountable image.
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*
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* For appendable images, that are written to a new session, you should
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* pass here the lba of the next writable address on disc.
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*
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* In stand alone images this is usually 0. However, you may want to
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* provide a different ms_block if you don't plan to burn the image in the
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* first session on disc, such as in some CD-Extra disc whether the data
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* image is written in a new session after some audio tracks.
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*/
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uint32_t ms_block;
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/**
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* When not NULL, it should point to a buffer of at least 64KiB, where
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* libisofs will write the contents that should be written at the beginning
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* of a overwriteable media, to grow the image. The growing of an image is
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* a way, used by first time in growisofs by Andy Polyakov, to allow the
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* appending of new data to non-multisession media, such as DVD+RW, in the
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* same way you append a new session to a multisession disc, i.e., without
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* need to write again the contents of the previous image.
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*
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* Note that if you want this kind of image growing, you will also need to
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* set appendable to "1" and provide a valid ms_block after the previous
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* image.
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*
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* You should initialize the buffer either with 0s, or with the contents of
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* the first blocks of the image you're growing. In most cases, 0 is good
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* enought.
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*/
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uint8_t *overwrite;
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/**
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* Size, in number of blocks, of the FIFO buffer used between the writer
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* thread and the burn_source. You have to provide at least a 32 blocks
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* buffer.
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*/
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size_t fifo_size;
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};
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typedef struct iso_data_source IsoDataSource;
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/**
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* Data source used by libisofs for reading an existing image.
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*
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* It offers homogeneous read access to arbitrary blocks to different sources
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* for images, such as .iso files, CD/DVD drives, etc...
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*
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* To create a multisession image, libisofs needs a IsoDataSource, that the
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* user must provide. The function iso_data_source_new_from_file() constructs
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* an IsoDataSource that uses POSIX I/O functions to access data. You can use
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* it with regular .iso images, and also with block devices that represent a
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* drive.
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*/
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struct iso_data_source {
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/**
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* Reference count for the data source. Should be 1 when a new source
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* is created. Don't access it directly, but with iso_data_source_ref()
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* and iso_data_source_unref() functions.
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*/
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unsigned int refcount;
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/**
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* Opens the given source. You must open() the source before any attempt
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* to read data from it. The open is the right place for grabbing the
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* underlying resources.
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*
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* @return
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* 1 if success, < 0 on error
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*/
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int (*open)(IsoDataSource *src);
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/**
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* Close a given source, freeing all system resources previously grabbed in
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* open().
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*
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* @return
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* 1 if success, < 0 on error
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*/
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int (*close)(IsoDataSource *src);
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/**
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* Read an arbitrary block (2048 bytes) of data from the source.
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*
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* @param lba
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* Block to be read.
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* @param buffer
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* Buffer where the data will be written. It should have at least
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* 2048 bytes.
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* @return
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* 1 if success, < 0 on error
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*/
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int (*read_block)(IsoDataSource *src, uint32_t lba, uint8_t *buffer);
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/**
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* Clean up the source specific data. Never call this directly, it is
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* automatically called by iso_data_source_unref() when refcount reach
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* 0.
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*/
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void (*free_data)(IsoDataSource *);
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/** Source specific data */
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void *data;
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};
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/**
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* Options for image reading.
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* There are four kind of options:
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* - Related to multisession support.
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* In most cases, an image begins at LBA 0 of the data source. However,
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* in multisession discs, the later image begins in the last session on
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* disc. The block option can be used to specify the start of that last
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* session.
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* - Related to the tree that will be read.
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* As default, when Rock Ridge extensions are present in the image, that
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* will be used to get the tree. If RR extensions are not present, libisofs
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* will use the Joliet extensions if available. Finally, the plain ISO-9660
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* tree is used if neither RR nor Joliet extensions are available. With
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* norock, nojoliet, and preferjoliet options, you can change this
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* default behavior.
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* - Related to default POSIX attributes.
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* When Rock Ridege extensions are not used, libisofs can't figure out what
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* are the the permissions, uid or gid for the files. You should supply
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* default values for that.
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*/
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struct iso_read_opts
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{
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/**
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* Block where the image begins, usually 0, can be different on a
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* multisession disc.
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*/
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uint32_t block;
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unsigned int norock : 1; /*< Do not read Rock Ridge extensions */
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unsigned int nojoliet : 1; /*< Do not read Joliet extensions */
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unsigned int noiso1999 : 1; /*< Do not read ISO 9660:1999 enhanced tree */
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/**
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* When both Joliet and RR extensions are present, the RR tree is used.
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* If you prefer using Joliet, set this to 1.
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*/
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unsigned int preferjoliet : 1;
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uid_t uid; /**< Default uid when no RR */
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gid_t gid; /**< Default uid when no RR */
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mode_t mode; /**< Default mode when no RR (only permissions) */
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/* TODO #00023 : let different default file and dir mode for iso reading */
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/* TODO #00024 : option to convert names to lower case for iso reading */
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/**
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* Input charset for RR file names. NULL to use default locale charset.
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*/
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char *input_charset;
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};
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/**
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* Return information for image.
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* Both size, hasRR and hasJoliet will be filled by libisofs with suitable
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* values.
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*/
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struct iso_read_image_features
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{
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/** It will be set to 1 if RR extensions are present, to 0 if not. */
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unsigned int hasRR :1;
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/** It will be set to 1 if Joliet extensions are present, to 0 if not. */
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unsigned int hasJoliet :1;
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/**
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* It will be set to 1 if the image is an ISO 9660:1999, i.e. it has
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* a version 2 Enhanced Volume Descriptor.
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*/
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unsigned int hasIso1999 :1;
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/** It will be set to 1 if El-Torito boot record is present, to 0 if not.*/
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unsigned int hasElTorito :1;
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/**
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* Will be filled with the size (in 2048 byte block) of the image, as
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* reported in the PVM.
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*/
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uint32_t size;
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};
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typedef struct iso_file_source IsoFileSource;
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typedef struct iso_filesystem IsoFilesystem;
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typedef struct IsoFileSource_Iface IsoFileSourceIface;
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/**
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* IsoFilesystem implementation to deal with ISO images, and to offer a way to
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* access specific information of the image, such as several volume attributes,
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* extensions being used, El-Torito artifacts...
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*/
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typedef IsoFilesystem IsoImageFilesystem;
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/**
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* See IsoFilesystem->get_id() for info about this.
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*/
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extern unsigned int iso_fs_global_id;
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/**
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* An IsoFilesystem is a handler for a source of files, or a "filesystem".
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* That is defined as a set of files that are organized in a hierarchical
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* structure.
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*
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* A filesystem allows libisofs to access files from several sources in
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* an homogeneous way, thus abstracting the underlying operations needed to
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* access and read file contents. Note that this doesn't need to be tied
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* to the disc filesystem used in the partition being accessed. For example,
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* we have an IsoFilesystem implementation to access any mounted filesystem,
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* using standard Linux functions. It is also legal, of course, to implement
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* an IsoFilesystem to deal with a specific filesystem over raw partitions.
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* That is what we do, for example, to access an ISO Image.
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*
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* Each file inside an IsoFilesystem is represented as an IsoFileSource object,
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* that defines POSIX-like interface for accessing files.
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*/
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struct iso_filesystem
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{
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/**
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* Type of filesystem.
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* "file" -> local filesystem
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* "iso " -> iso image filesystem
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*/
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char type[4];
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/**
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* Get the root of a filesystem.
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*
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* @return
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* 1 on success, < 0 on error
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*/
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int (*get_root)(IsoFilesystem *fs, IsoFileSource **root);
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/**
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* Retrieve a file from its absolute path inside the filesystem.
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*
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* @return
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* 1 success, < 0 error
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* Error codes:
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* ISO_FILE_ACCESS_DENIED
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* ISO_FILE_BAD_PATH
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* ISO_FILE_DOESNT_EXIST
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* ISO_MEM_ERROR
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* ISO_FILE_ERROR
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* ISO_NULL_POINTER
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*/
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int (*get_by_path)(IsoFilesystem *fs, const char *path,
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IsoFileSource **file);
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/**
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* Get filesystem identifier.
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*
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* If the filesystem is able to generate correct values of the st_dev
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* and st_ino fields for the struct stat of each file, this should
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* return an unique number, greater than 0.
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*
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* To get a identifier for your filesystem implementation you should
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* use iso_fs_global_id, incrementing it by one each time.
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*
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* Otherwise, if you can't ensure values in the struct stat are valid,
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* this should return 0.
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*/
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unsigned int (*get_id)(IsoFilesystem *fs);
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/**
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* Opens the filesystem for several read operations. Calling this funcion
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* is not needed at all, each time that the underlying system resource
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* needs to be accessed, it is openned propertly.
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* However, if you plan to execute several operations on the filesystem,
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* it is a good idea to open it previously, to prevent several open/close
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* operations to occur.
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*
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* @return 1 on success, < 0 on error
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*/
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int (*open)(IsoFilesystem *fs);
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/**
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* Close the filesystem, thus freeing all system resources. You should
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* call this function if you have previously open() it.
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* Note that you can open()/close() a filesystem several times.
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*
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* @return 1 on success, < 0 on error
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*/
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int (*close)(IsoFilesystem *fs);
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/**
|
|
* Free implementation specific data. Should never be called by user.
|
|
* Use iso_filesystem_unref() instead.
|
|
*/
|
|
void (*free)(IsoFilesystem *fs);
|
|
|
|
/* internal usage, do never access them directly */
|
|
unsigned int refcount;
|
|
void *data;
|
|
};
|
|
|
|
/**
|
|
* Interface definition for an IsoFileSource. Defines the POSIX-like function
|
|
* to access files and abstract underlying source.
|
|
*/
|
|
struct IsoFileSource_Iface
|
|
{
|
|
/**
|
|
* Get the path, relative to the filesystem this file source belongs to.
|
|
*
|
|
* @return
|
|
* the path of the FileSource inside the filesystem, it should be
|
|
* freed when no more needed.
|
|
*/
|
|
char* (*get_path)(IsoFileSource *src);
|
|
|
|
/**
|
|
* Get the name of the file, with the dir component of the path.
|
|
*
|
|
* @return
|
|
* the name of the file, it should be freed when no more needed.
|
|
*/
|
|
char* (*get_name)(IsoFileSource *src);
|
|
|
|
/**
|
|
* Get information about the file. It is equivalent to lstat(2).
|
|
*
|
|
* @return
|
|
* 1 success, < 0 error
|
|
* Error codes:
|
|
* ISO_FILE_ACCESS_DENIED
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
*/
|
|
int (*lstat)(IsoFileSource *src, struct stat *info);
|
|
|
|
/**
|
|
* Get information about the file. If the file is a symlink, the info
|
|
* returned refers to the destination. It is equivalent to stat(2).
|
|
*
|
|
* @return
|
|
* 1 success, < 0 error
|
|
* Error codes:
|
|
* ISO_FILE_ACCESS_DENIED
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
*/
|
|
int (*stat)(IsoFileSource *src, struct stat *info);
|
|
|
|
/**
|
|
* Check if the process has access to read file contents. Note that this
|
|
* is not necessarily related with (l)stat functions. For example, in a
|
|
* filesystem implementation to deal with an ISO image, if the user has
|
|
* read access to the image it will be able to read all files inside it,
|
|
* despite of the particular permission of each file in the RR tree, that
|
|
* are what the above functions return.
|
|
*
|
|
* @return
|
|
* 1 if process has read access, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ACCESS_DENIED
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
*/
|
|
int (*access)(IsoFileSource *src);
|
|
|
|
/**
|
|
* Opens the source.
|
|
* @return 1 on success, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ALREADY_OPENNED
|
|
* ISO_FILE_ACCESS_DENIED
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
*/
|
|
int (*open)(IsoFileSource *src);
|
|
|
|
/**
|
|
* Close a previuously openned file
|
|
* @return 1 on success, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
* ISO_FILE_NOT_OPENNED
|
|
*/
|
|
int (*close)(IsoFileSource *src);
|
|
|
|
/**
|
|
* Attempts to read up to count bytes from the given source into
|
|
* the buffer starting at buf.
|
|
*
|
|
* The file src must be open() before calling this, and close() when no
|
|
* more needed. Not valid for dirs. On symlinks it reads the destination
|
|
* file.
|
|
*
|
|
* @return
|
|
* number of bytes read, 0 if EOF, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
* ISO_FILE_NOT_OPENNED
|
|
* ISO_WRONG_ARG_VALUE -> if count == 0
|
|
* ISO_FILE_IS_DIR
|
|
* ISO_MEM_ERROR
|
|
* ISO_INTERRUPTED
|
|
*/
|
|
int (*read)(IsoFileSource *src, void *buf, size_t count);
|
|
|
|
/**
|
|
* Read a directory.
|
|
*
|
|
* Each call to this function will return a new children, until we reach
|
|
* the end of file (i.e, no more children), in that case it returns 0.
|
|
*
|
|
* The dir must be open() before calling this, and close() when no more
|
|
* needed. Only valid for dirs.
|
|
*
|
|
* Note that "." and ".." children MUST NOT BE returned.
|
|
*
|
|
* @param child
|
|
* pointer to be filled with the given child. Undefined on error or OEF
|
|
* @return
|
|
* 1 on success, 0 if EOF (no more children), < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
* ISO_FILE_NOT_OPENNED
|
|
* ISO_FILE_IS_NOT_DIR
|
|
* ISO_MEM_ERROR
|
|
*/
|
|
int (*readdir)(IsoFileSource *src, IsoFileSource **child);
|
|
|
|
/**
|
|
* Read the destination of a symlink. You don't need to open the file
|
|
* to call this.
|
|
*
|
|
* @param buf
|
|
* allocated buffer of at least bufsiz bytes.
|
|
* The dest. will be copied there, and it will be NULL-terminated
|
|
* @param bufsiz
|
|
* characters to be copied. Destination link will be truncated if
|
|
* it is larger than given size. This include the \0 character.
|
|
* @return
|
|
* 1 on success, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
* ISO_WRONG_ARG_VALUE -> if bufsiz <= 0
|
|
* ISO_FILE_IS_NOT_SYMLINK
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
*
|
|
*/
|
|
int (*readlink)(IsoFileSource *src, char *buf, size_t bufsiz);
|
|
|
|
/**
|
|
* Get the filesystem for this source. No extra ref is added, so you
|
|
* musn't unref the IsoFilesystem.
|
|
*
|
|
* @return
|
|
* The filesystem, NULL on error
|
|
*/
|
|
IsoFilesystem* (*get_filesystem)(IsoFileSource *src);
|
|
|
|
/**
|
|
* Free implementation specific data. Should never be called by user.
|
|
* Use iso_file_source_unref() instead.
|
|
*/
|
|
void (*free)(IsoFileSource *src);
|
|
|
|
/*
|
|
* TODO #00004 Add a get_mime_type() function.
|
|
* This can be useful for GUI apps, to choose the icon of the file
|
|
*/
|
|
};
|
|
|
|
/**
|
|
* An IsoFile Source is a POSIX abstraction of a file.
|
|
*/
|
|
struct iso_file_source
|
|
{
|
|
const IsoFileSourceIface *class;
|
|
int refcount;
|
|
void *data;
|
|
};
|
|
|
|
/**
|
|
* Initialize libisofs. You must call this before any usage of the library.
|
|
* @return 1 on success, < 0 on error
|
|
*/
|
|
int iso_init();
|
|
|
|
/**
|
|
* Finalize libisofs.
|
|
*/
|
|
void iso_finish();
|
|
|
|
/**
|
|
* 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
|
|
* Location where the image pointer will be stored.
|
|
* @return
|
|
* 1 sucess, < 0 error
|
|
*/
|
|
int iso_image_new(const char *name, IsoImage **image);
|
|
|
|
/**
|
|
* Get version of the libisofs library.
|
|
*/
|
|
void iso_lib_version(int *major, int *minor, int *micro);
|
|
|
|
/**
|
|
* Create a burn_source to actually write the image. That burn_source can be
|
|
* used with libburn as a data source for a track.
|
|
*
|
|
* @param image
|
|
* The image to write.
|
|
* @param opts
|
|
* The options for image generation.
|
|
* @param burn_src
|
|
* Location where the pointer to the burn_source will be stored
|
|
* @return
|
|
* 1 on success, < 0 on error
|
|
*/
|
|
int iso_image_create_burn_source(IsoImage *image, Ecma119WriteOpts *opts,
|
|
struct burn_source **burn_src);
|
|
|
|
/**
|
|
* Import a previous session or image, for growing or modify.
|
|
*
|
|
* @param image
|
|
* The image context to which old image will be imported. Note that all
|
|
* files added to image, and image attributes, will be replaced with the
|
|
* contents of the old image.
|
|
* TODO #00025 support for merging old image files
|
|
* @param src
|
|
* Data Source from which old image will be read. A extra reference is
|
|
* added, so you still need to iso_data_source_unref() yours.
|
|
* @param opts
|
|
* Options for image import
|
|
* @param features
|
|
* Will be filled with the features of the old image. You can pass NULL
|
|
* if you're not interested on them.
|
|
* @return
|
|
* 1 on success, < 0 on error
|
|
*/
|
|
int iso_image_import(IsoImage *image, IsoDataSource *src,
|
|
struct iso_read_opts *opts,
|
|
struct iso_read_image_features *features);
|
|
|
|
/**
|
|
* Increments the reference counting of the given image.
|
|
*/
|
|
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
|
|
* their refcount reach 0 too, of course).
|
|
*/
|
|
void iso_image_unref(IsoImage *image);
|
|
|
|
/**
|
|
* Get the root directory of the image.
|
|
* No extra ref is added to it, so you musn't unref it. Use iso_node_ref()
|
|
* if you want to get your own reference.
|
|
*/
|
|
IsoDir *iso_image_get_root(const IsoImage *image);
|
|
|
|
/**
|
|
* Fill in the volset identifier for a image.
|
|
*/
|
|
void iso_image_set_volset_id(IsoImage *image, const char *volset_id);
|
|
|
|
/**
|
|
* Get the volset identifier.
|
|
* The returned string is owned by the image and should not be freed nor
|
|
* changed.
|
|
*/
|
|
const char *iso_image_get_volset_id(const IsoImage *image);
|
|
|
|
/**
|
|
* Fill in the volume identifier for a image.
|
|
*/
|
|
void iso_image_set_volume_id(IsoImage *image, const char *volume_id);
|
|
|
|
/**
|
|
* Get the volume identifier.
|
|
* The returned string is owned by the image and should not be freed nor
|
|
* changed.
|
|
*/
|
|
const char *iso_image_get_volume_id(const IsoImage *image);
|
|
|
|
/**
|
|
* Fill in the publisher for a image.
|
|
*/
|
|
void iso_image_set_publisher_id(IsoImage *image, const char *publisher_id);
|
|
|
|
/**
|
|
* Get the publisher of a image.
|
|
* The returned string is owned by the image and should not be freed nor
|
|
* changed.
|
|
*/
|
|
const char *iso_image_get_publisher_id(const IsoImage *image);
|
|
|
|
/**
|
|
* Fill in the data preparer for a image.
|
|
*/
|
|
void iso_image_set_data_preparer_id(IsoImage *image,
|
|
const char *data_preparer_id);
|
|
|
|
/**
|
|
* Get the data preparer of a image.
|
|
* The returned string is owned by the image and should not be freed nor
|
|
* changed.
|
|
*/
|
|
const char *iso_image_get_data_preparer_id(const IsoImage *image);
|
|
|
|
/**
|
|
* Fill in the system id for a image. Up to 32 characters.
|
|
*/
|
|
void iso_image_set_system_id(IsoImage *image, const char *system_id);
|
|
|
|
/**
|
|
* Get the system id of a image.
|
|
* The returned string is owned by the image and should not be freed nor
|
|
* changed.
|
|
*/
|
|
const char *iso_image_get_system_id(const IsoImage *image);
|
|
|
|
/**
|
|
* Fill in the application id for a image. Up to 128 chars.
|
|
*/
|
|
void iso_image_set_application_id(IsoImage *image, const char *application_id);
|
|
|
|
/**
|
|
* Get the application id of a image.
|
|
* The returned string is owned by the image and should not be freed nor
|
|
* changed.
|
|
*/
|
|
const char *iso_image_get_application_id(const IsoImage *image);
|
|
|
|
/**
|
|
* Fill copyright information for the image. Usually this refers
|
|
* to a file on disc. Up to 37 characters.
|
|
*/
|
|
void iso_image_set_copyright_file_id(IsoImage *image,
|
|
const char *copyright_file_id);
|
|
|
|
/**
|
|
* Get the copyright information of a image.
|
|
* The returned string is owned by the image and should not be freed nor
|
|
* changed.
|
|
*/
|
|
const char *iso_image_get_copyright_file_id(const IsoImage *image);
|
|
|
|
/**
|
|
* Fill abstract information for the image. Usually this refers
|
|
* to a file on disc. Up to 37 characters.
|
|
*/
|
|
void iso_image_set_abstract_file_id(IsoImage *image,
|
|
const char *abstract_file_id);
|
|
|
|
/**
|
|
* Get the abstract information of a image.
|
|
* The returned string is owned by the image and should not be freed nor
|
|
* changed.
|
|
*/
|
|
const char *iso_image_get_abstract_file_id(const IsoImage *image);
|
|
|
|
/**
|
|
* Fill biblio information for the image. Usually this refers
|
|
* to a file on disc. Up to 37 characters.
|
|
*/
|
|
void iso_image_set_biblio_file_id(IsoImage *image, const char *biblio_file_id);
|
|
|
|
/**
|
|
* Get the biblio information of a image.
|
|
* The returned string is owned by the image and should not be freed nor
|
|
* changed.
|
|
*/
|
|
const char *iso_image_get_biblio_file_id(const IsoImage *image);
|
|
|
|
/**
|
|
* Create a bootable image by adding a El-Torito boot image.
|
|
*
|
|
* This also add a catalog boot node to the image filesystem tree.
|
|
*
|
|
* @param image
|
|
* The image to make bootable. If it was already bootable this function
|
|
* returns an error and the image remains unmodified.
|
|
* @param image_path
|
|
* The path on the image tree of a regular file to use as default boot
|
|
* image.
|
|
* @param type
|
|
* The boot media type. This can be one of 3 types:
|
|
* - Floppy emulation: Boot image file must be exactly
|
|
* 1200 kB, 1440 kB or 2880 kB.
|
|
* - Hard disc emulation: The image must begin with a master
|
|
* boot record with a single image.
|
|
* - No emulation. You should specify load segment and load size
|
|
* of image.
|
|
* @param catalog_path
|
|
* The path on the image tree where the catalog will be stored. The
|
|
* directory component of this path must be a directory existent on the
|
|
* image tree, and the filename component must be unique among all
|
|
* children of that directory on image. Otherwise a correspodent error
|
|
* code will be returned. This function will add an IsoBoot node that acts
|
|
* as a placeholder for the real catalog, that will be generated at image
|
|
* creation time.
|
|
* @param boot
|
|
* Location where a pointer to the added boot image will be stored. That
|
|
* object is owned by the IsoImage and should not be freed by the user,
|
|
* nor dereferenced once the last reference to the IsoImage was disposed
|
|
* via iso_image_unref(). A NULL value is allowed if you don't need a
|
|
* reference to the boot image.
|
|
* @return
|
|
* 1 on success, < 0 on error
|
|
*/
|
|
int iso_image_set_boot_image(IsoImage *image, const char *image_path,
|
|
enum eltorito_boot_media_type type,
|
|
const char *catalog_path,
|
|
ElToritoBootImage **boot);
|
|
|
|
/* TODO #00026 : add support for "hidden" bootable images. */
|
|
|
|
/**
|
|
* Get El-Torito boot image of an ISO image, if any.
|
|
*
|
|
* This can be useful, for example, to check if a volume read from a previous
|
|
* session or an existing image is bootable. It can also be useful to get
|
|
* the image and catalog tree nodes. An application would want those, for
|
|
* example, to prevent the user removing it.
|
|
*
|
|
* Both nodes are owned by libisofs and should not be freed. You can get your
|
|
* own ref with iso_node_ref(). You can can also check if the node is already
|
|
* on the tree by getting its parent (note that when reading El-Torito info
|
|
* from a previous image, the nodes might not be on the tree even if you haven't
|
|
* removed them). Remember that you'll need to get a new ref
|
|
* (with iso_node_ref()) before inserting them again to the tree, and probably
|
|
* you will also need to set the name or permissions.
|
|
*
|
|
* @param image
|
|
* The image from which to get the boot image.
|
|
* @param boot
|
|
* If not NULL, it will be filled with a pointer to the boot image, if
|
|
* any. That object is owned by the IsoImage and should not be freed by
|
|
* the user, nor dereferenced once the last reference to the IsoImage was
|
|
* disposed via iso_image_unref().
|
|
* @param imgnode
|
|
* When not NULL, it will be filled with the image tree node. No extra ref
|
|
* is added, you can use iso_node_ref() to get one if you need it.
|
|
* @param catnode
|
|
* When not NULL, it will be filled with the catnode tree node. No extra
|
|
* ref is added, you can use iso_node_ref() to get one if you need it.
|
|
* @return
|
|
* 1 on success, 0 is the image is not bootable (i.e., it has no El-Torito
|
|
* image), < 0 error.
|
|
*/
|
|
int iso_image_get_boot_image(IsoImage *image, ElToritoBootImage **boot,
|
|
IsoFile **imgnode, IsoBoot **catnode);
|
|
|
|
/**
|
|
* Removes the El-Torito bootable image.
|
|
*
|
|
* The IsoBoot node that acts as placeholder for the catalog is also removed
|
|
* for the image tree, if there.
|
|
* If the image is not bootable (don't have el-torito boot image) this function
|
|
* just returns.
|
|
*/
|
|
void iso_image_remove_boot_image(IsoImage *image);
|
|
|
|
/**
|
|
* Sets the load segment for the initial boot image. This is only for
|
|
* no emulation boot images, and is a NOP for other image types.
|
|
*/
|
|
void el_torito_set_load_seg(ElToritoBootImage *bootimg, short segment);
|
|
|
|
/**
|
|
* Sets the number of sectors (512b) to be load at load segment during
|
|
* the initial boot procedure. This is only for
|
|
* no emulation boot images, and is a NOP for other image types.
|
|
*/
|
|
void el_torito_set_load_size(ElToritoBootImage *bootimg, short sectors);
|
|
|
|
/**
|
|
* Marks the specified boot image as not bootable
|
|
*/
|
|
void el_torito_set_no_bootable(ElToritoBootImage *bootimg);
|
|
|
|
/**
|
|
* Specifies that this image needs to be patched. This 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 for isolinux boot images.
|
|
*/
|
|
void el_torito_patch_isolinux_image(ElToritoBootImage *bootimg);
|
|
|
|
/**
|
|
* Increments the reference counting of the given node.
|
|
*/
|
|
void iso_node_ref(IsoNode *node);
|
|
|
|
/**
|
|
* Decrements the reference couting of the given node.
|
|
* If it reach 0, the node is free, and, if the node is a directory,
|
|
* its children will be unref() too.
|
|
*/
|
|
void iso_node_unref(IsoNode *node);
|
|
|
|
/**
|
|
* Get the type of an IsoNode.
|
|
*/
|
|
enum IsoNodeType iso_node_get_type(IsoNode *node);
|
|
|
|
/**
|
|
* Set the name of a node. Note that if the node is already added to a dir
|
|
* this can fail if dir already contains a node with the new name.
|
|
*
|
|
* @param node
|
|
* The node whose name you want to change. Note that you can't change
|
|
* the name of the root.
|
|
* @param name
|
|
* The name for the node. If you supply an empty string or a
|
|
* name greater than 255 characters this returns with failure, and
|
|
* node name is not modified.
|
|
* @return
|
|
* 1 on success, < 0 on error
|
|
*/
|
|
int iso_node_set_name(IsoNode *node, const char *name);
|
|
|
|
/**
|
|
* Get the name of a node.
|
|
* The returned string belongs to the node and should not be modified nor
|
|
* freed. Use strdup if you really need your own copy.
|
|
*/
|
|
const char *iso_node_get_name(const IsoNode *node);
|
|
|
|
/**
|
|
* Set the permissions for the node. This attribute is only useful when
|
|
* Rock Ridge extensions are enabled.
|
|
*
|
|
* @param mode
|
|
* bitmask with the permissions of the node, as specified in 'man 2 stat'.
|
|
* The file type bitfields will be ignored, only file permissions will be
|
|
* modified.
|
|
*/
|
|
void iso_node_set_permissions(IsoNode *node, mode_t mode);
|
|
|
|
/**
|
|
* Get the permissions for the node
|
|
*/
|
|
mode_t iso_node_get_permissions(const IsoNode *node);
|
|
|
|
/**
|
|
* Get the mode of the node, both permissions and file type, as specified in
|
|
* 'man 2 stat'.
|
|
*/
|
|
mode_t iso_node_get_mode(const IsoNode *node);
|
|
|
|
/**
|
|
* Set the user id for the node. This attribute is only useful when
|
|
* Rock Ridge extensions are enabled.
|
|
*/
|
|
void iso_node_set_uid(IsoNode *node, uid_t uid);
|
|
|
|
/**
|
|
* Get the user id of the node.
|
|
*/
|
|
uid_t iso_node_get_uid(const IsoNode *node);
|
|
|
|
/**
|
|
* Set the group id for the node. This attribute is only useful when
|
|
* Rock Ridge extensions are enabled.
|
|
*/
|
|
void iso_node_set_gid(IsoNode *node, gid_t gid);
|
|
|
|
/**
|
|
* Get the group id of the node.
|
|
*/
|
|
gid_t iso_node_get_gid(const IsoNode *node);
|
|
|
|
/**
|
|
* Set the time of last modification of the file
|
|
*/
|
|
void iso_node_set_mtime(IsoNode *node, time_t time);
|
|
|
|
/**
|
|
* Get the time of last modification of the file
|
|
*/
|
|
time_t iso_node_get_mtime(const IsoNode *node);
|
|
|
|
/**
|
|
* Set the time of last access to the file
|
|
*/
|
|
void iso_node_set_atime(IsoNode *node, time_t time);
|
|
|
|
/**
|
|
* Get the time of last access to the file
|
|
*/
|
|
time_t iso_node_get_atime(const IsoNode *node);
|
|
|
|
/**
|
|
* Set the time of last status change of the file
|
|
*/
|
|
void iso_node_set_ctime(IsoNode *node, time_t time);
|
|
|
|
/**
|
|
* Get the time of last status change of the file
|
|
*/
|
|
time_t iso_node_get_ctime(const IsoNode *node);
|
|
|
|
/**
|
|
* Set if the node will be hidden in RR/ISO tree, Joliet tree or both.
|
|
*
|
|
* If the file is setted as hidden in one tree, it won't be included there, so
|
|
* it won't be visible in a OS accessing CD using that tree. For example,
|
|
* GNU/Linux systems access to Rock Ridge / ISO9960 tree in order to see
|
|
* what is recorded on CD, while MS Windows make use of the Joliet tree. If a
|
|
* file is hidden only in Joliet, it won't be visible in Windows systems,
|
|
* while still visible in Linux.
|
|
*
|
|
* If a file is hidden in both trees, it won't be written to image.
|
|
*
|
|
* @param node
|
|
* The node that is to be hidden.
|
|
* @param hide_attrs
|
|
* IsoHideNodeFlag's to set the trees in which file will be hidden.
|
|
*/
|
|
void iso_node_set_hidden(IsoNode *node, int hide_attrs);
|
|
|
|
/**
|
|
* Add a new node to a dir. Note that this function don't add a new ref to
|
|
* the node, so you don't need to free it, it will be automatically freed
|
|
* when the dir is deleted. Of course, if you want to keep using the node
|
|
* after the dir life, you need to iso_node_ref() it.
|
|
*
|
|
* @param dir
|
|
* the dir where to add the node
|
|
* @param child
|
|
* the node to add. You must ensure that the node hasn't previously added
|
|
* to other dir, and that the node name is unique inside the child.
|
|
* Otherwise this function will return a failure, and the child won't be
|
|
* inserted.
|
|
* @param replace
|
|
* if the dir already contains a node with the same name, whether to
|
|
* replace or not the old node with this.
|
|
* @return
|
|
* number of nodes in dir if succes, < 0 otherwise
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if dir or child are NULL
|
|
* ISO_NODE_ALREADY_ADDED, if child is already added to other dir
|
|
* ISO_NODE_NAME_NOT_UNIQUE, a node with same name already exists
|
|
* ISO_WRONG_ARG_VALUE, if child == dir, or replace != (0,1)
|
|
*/
|
|
int iso_dir_add_node(IsoDir *dir, IsoNode *child,
|
|
enum iso_replace_mode replace);
|
|
|
|
/**
|
|
* Locate a node inside a given dir.
|
|
*
|
|
* @param name
|
|
* The name of the node
|
|
* @param node
|
|
* Location for a pointer to the node, it will filled with NULL if the dir
|
|
* doesn't have a child with the given name.
|
|
* The node will be owned by the dir and shouldn't be unref(). Just call
|
|
* iso_node_ref() to get your own reference to the node.
|
|
* Note that you can pass NULL is the only thing you want to do is check
|
|
* if a node with such name already exists on dir.
|
|
* @return
|
|
* 1 node found, 0 child has no such node, < 0 error
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if dir or name are NULL
|
|
*/
|
|
int iso_dir_get_node(IsoDir *dir, const char *name, IsoNode **node);
|
|
|
|
/**
|
|
* Get the number of children of a directory.
|
|
*
|
|
* @return
|
|
* >= 0 number of items, < 0 error
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if dir is NULL
|
|
*/
|
|
int iso_dir_get_nchildren(IsoDir *dir);
|
|
|
|
/**
|
|
* Removes a child from a directory.
|
|
* The child is not freed, so you will become the owner of the node. Later
|
|
* you can add the node to another dir (calling iso_dir_add_node), or free
|
|
* it if you don't need it (with iso_node_unref).
|
|
*
|
|
* @return
|
|
* 1 on success, < 0 error
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if node is NULL
|
|
* ISO_NODE_NOT_ADDED_TO_DIR, if node doesn't belong to a dir
|
|
*/
|
|
int iso_node_take(IsoNode *node);
|
|
|
|
/**
|
|
* Removes a child from a directory and free (unref) it.
|
|
* If you want to keep the child alive, you need to iso_node_ref() it
|
|
* before this call, but in that case iso_node_take() is a better
|
|
* alternative.
|
|
*
|
|
* @return
|
|
* 1 on success, < 0 error
|
|
*/
|
|
int iso_node_remove(IsoNode *node);
|
|
|
|
/*
|
|
* Get the parent of the given iso tree node. No extra ref is added to the
|
|
* returned directory, you must take your ref. with iso_node_ref() if you
|
|
* need it.
|
|
*
|
|
* If node is the root node, the same node will be returned as its parent.
|
|
*
|
|
* This returns NULL if the node doesn't pertain to any tree
|
|
* (it was removed/take).
|
|
*/
|
|
IsoDir *iso_node_get_parent(IsoNode *node);
|
|
|
|
/**
|
|
* Get an iterator for the children of the given dir.
|
|
*
|
|
* You can iterate over the children with iso_dir_iter_next. When finished,
|
|
* you should free the iterator with iso_dir_iter_free.
|
|
* You musn't delete a child of the same dir, using iso_node_take() or
|
|
* iso_node_remove(), while you're using the iterator. You can use
|
|
* iso_node_take_iter() or iso_node_remove_iter() instead.
|
|
*
|
|
* You can use the iterator in the way like this
|
|
*
|
|
* IsoDirIter *iter;
|
|
* IsoNode *node;
|
|
* if ( iso_dir_get_children(dir, &iter) != 1 ) {
|
|
* // handle error
|
|
* }
|
|
* while ( iso_dir_iter_next(iter, &node) == 1 ) {
|
|
* // do something with the child
|
|
* }
|
|
* iso_dir_iter_free(iter);
|
|
*
|
|
* An iterator is intended to be used in a single iteration over the
|
|
* children of a dir. Thus, it should be treated as a temporary object,
|
|
* and free as soon as possible.
|
|
*
|
|
* @return
|
|
* 1 success, < 0 error
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if dir or iter are NULL
|
|
* ISO_OUT_OF_MEM
|
|
*/
|
|
int iso_dir_get_children(const IsoDir *dir, IsoDirIter **iter);
|
|
|
|
/**
|
|
* Get the next child.
|
|
* Take care that the node is owned by its parent, and will be unref() when
|
|
* the parent is freed. If you want your own ref to it, call iso_node_ref()
|
|
* on it.
|
|
*
|
|
* @return
|
|
* 1 success, 0 if dir has no more elements, < 0 error
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if node or iter are NULL
|
|
* ISO_ERROR, on wrong iter usage, usual caused by modiying the
|
|
* dir during iteration
|
|
*/
|
|
int iso_dir_iter_next(IsoDirIter *iter, IsoNode **node);
|
|
|
|
/**
|
|
* Check if there're more children.
|
|
*
|
|
* @return
|
|
* 1 dir has more elements, 0 no, < 0 error
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if iter is NULL
|
|
*/
|
|
int iso_dir_iter_has_next(IsoDirIter *iter);
|
|
|
|
/**
|
|
* Free a dir iterator.
|
|
*/
|
|
void iso_dir_iter_free(IsoDirIter *iter);
|
|
|
|
/**
|
|
* Removes a child from a directory during an iteration, without freeing it.
|
|
* It's like iso_node_take(), but to be used during a directory iteration.
|
|
* The node removed will be the last returned by the iteration.
|
|
*
|
|
* The behavior on two call to this function without calling iso_dir_iter_next
|
|
* between then is undefined, and should never occur. (TODO protect against this?)
|
|
*
|
|
* @return
|
|
* 1 on succes, < 0 error
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if iter is NULL
|
|
* ISO_ERROR, on wrong iter usage, for example by call this before
|
|
* iso_dir_iter_next.
|
|
*/
|
|
int iso_dir_iter_take(IsoDirIter *iter);
|
|
|
|
/**
|
|
* Removes a child from a directory during an iteration and unref() it.
|
|
* It's like iso_node_remove(), but to be used during a directory iteration.
|
|
* The node removed will be the last returned by the iteration.
|
|
*
|
|
* The behavior on two call to this function without calling iso_tree_iter_next
|
|
* between then is undefined, and should never occur. (TODO protect against this?)
|
|
*
|
|
* @return
|
|
* 1 on succes, < 0 error
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if iter is NULL
|
|
* ISO_ERROR, on wrong iter usage, for example by call this before
|
|
* iso_dir_iter_next.
|
|
*/
|
|
int iso_dir_iter_remove(IsoDirIter *iter);
|
|
|
|
/**
|
|
* Get the destination of a node.
|
|
* The returned string belongs to the node and should not be modified nor
|
|
* freed. Use strdup if you really need your own copy.
|
|
*/
|
|
const char *iso_symlink_get_dest(const IsoSymlink *link);
|
|
|
|
/**
|
|
* Set the destination of a link.
|
|
*
|
|
* @param dest
|
|
* New destination for the link. It must be a non-empty string, otherwise
|
|
* this function doesn't modify previous destination.
|
|
* @return
|
|
* 1 on success, < 0 on error
|
|
*/
|
|
int iso_symlink_set_dest(IsoSymlink *link, const char *dest);
|
|
|
|
/**
|
|
* Sets the order in which a node will be written on image. High weihted files
|
|
* will be written first, so in a disc them will be written near the center.
|
|
*
|
|
* @param node
|
|
* The node which weight will be changed. If it's a dir, this function
|
|
* will change the weight of all its children. For nodes other that dirs
|
|
* or regular files, this function has no effect.
|
|
* @param w
|
|
* The weight as a integer number, the greater this value is, the
|
|
* closer from the begining of image the file will be written.
|
|
*/
|
|
void iso_node_set_sort_weight(IsoNode *node, int w);
|
|
|
|
/**
|
|
* Get the sort weight of a file.
|
|
*/
|
|
int iso_file_get_sort_weight(IsoFile *file);
|
|
|
|
/**
|
|
* Get the size of the file, in bytes
|
|
*/
|
|
off_t iso_file_get_size(IsoFile *file);
|
|
|
|
/**
|
|
* Add a new directory to the iso tree. Permissions, owner and hidden atts
|
|
* are taken from parent, you can modify them later.
|
|
*
|
|
* @param parent
|
|
* the dir where the new directory will be created
|
|
* @param name
|
|
* name for the new dir. If a node with same name already exists on
|
|
* parent, this functions fails with ISO_NODE_NAME_NOT_UNIQUE.
|
|
* @param dir
|
|
* place where to store a pointer to the newly created dir. No extra
|
|
* ref is addded, so you will need to call iso_node_ref() if you really
|
|
* need it. You can pass NULL in this parameter if you don't need the
|
|
* pointer.
|
|
* @return
|
|
* number of nodes in parent if success, < 0 otherwise
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if parent or name are NULL
|
|
* ISO_NODE_NAME_NOT_UNIQUE, a node with same name already exists
|
|
* ISO_MEM_ERROR
|
|
*/
|
|
int iso_tree_add_new_dir(IsoDir *parent, const char *name, IsoDir **dir);
|
|
|
|
/*
|
|
TODO #00007 expose Stream and this function:
|
|
int iso_tree_add_new_file(IsoDir *parent, const char *name, stream, file)
|
|
*/
|
|
|
|
/**
|
|
* Add a new symlink to the directory tree. Permissions are set to 0777,
|
|
* owner and hidden atts are taken from parent. You can modify any of them
|
|
* later.
|
|
*
|
|
* @param parent
|
|
* the dir where the new symlink will be created
|
|
* @param name
|
|
* name for the new symlink. If a node with same name already exists on
|
|
* parent, this functions fails with ISO_NODE_NAME_NOT_UNIQUE.
|
|
* @param dest
|
|
* destination of the link
|
|
* @param link
|
|
* place where to store a pointer to the newly created link. No extra
|
|
* ref is addded, so you will need to call iso_node_ref() if you really
|
|
* need it. You can pass NULL in this parameter if you don't need the
|
|
* pointer
|
|
* @return
|
|
* number of nodes in parent if success, < 0 otherwise
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if parent, name or dest are NULL
|
|
* ISO_NODE_NAME_NOT_UNIQUE, a node with same name already exists
|
|
* ISO_MEM_ERROR
|
|
*/
|
|
int iso_tree_add_new_symlink(IsoDir *parent, const char *name,
|
|
const char *dest, IsoSymlink **link);
|
|
|
|
/**
|
|
* Add a new special file to the directory tree. As far as libisofs concerns,
|
|
* an special file is a block device, a character device, a FIFO (named pipe)
|
|
* or a socket. You can choose the specific kind of file you want to add
|
|
* by setting mode propertly (see man 2 stat).
|
|
*
|
|
* Note that special files are only written to image when Rock Ridge
|
|
* extensions are enabled. Moreover, a special file is just a directory entry
|
|
* in the image tree, no data is written beyond that.
|
|
*
|
|
* Owner and hidden atts are taken from parent. You can modify any of them
|
|
* later.
|
|
*
|
|
* @param parent
|
|
* the dir where the new special file will be created
|
|
* @param name
|
|
* name for the new special file. If a node with same name already exists
|
|
* on parent, this functions fails with ISO_NODE_NAME_NOT_UNIQUE.
|
|
* @param mode
|
|
* file type and permissions for the new node. Note that you can't
|
|
* specify any kind of file here, only special types are allowed. i.e,
|
|
* S_IFSOCK, S_IFBLK, S_IFCHR and S_IFIFO are valid types; S_IFLNK,
|
|
* S_IFREG and S_IFDIR aren't.
|
|
* @param dev
|
|
* device ID, equivalent to the st_rdev field in man 2 stat.
|
|
* @param special
|
|
* place where to store a pointer to the newly created special file. No
|
|
* extra ref is addded, so you will need to call iso_node_ref() if you
|
|
* really need it. You can pass NULL in this parameter if you don't need
|
|
* the pointer.
|
|
* @return
|
|
* number of nodes in parent if success, < 0 otherwise
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if parent, name or dest are NULL
|
|
* ISO_NODE_NAME_NOT_UNIQUE, a node with same name already exists
|
|
* ISO_WRONG_ARG_VALUE if you select a incorrect mode
|
|
* ISO_MEM_ERROR
|
|
*/
|
|
int iso_tree_add_new_special(IsoDir *parent, const char *name, mode_t mode,
|
|
dev_t dev, IsoSpecial **special);
|
|
|
|
/**
|
|
* Set whether to follow or not symbolic links when added a file from a source
|
|
* to IsoImage. Default behavior is to not follow symlinks.
|
|
*/
|
|
void iso_tree_set_follow_symlinks(IsoImage *image, int follow);
|
|
|
|
/**
|
|
* Get current setting for follow_symlinks.
|
|
*
|
|
* @see iso_tree_set_follow_symlinks
|
|
*/
|
|
int iso_tree_get_follow_symlinks(IsoImage *image);
|
|
|
|
/**
|
|
* Set whether to skip or not hidden files when adding a directory recursibely.
|
|
* Default behavior is to not ignore them, i.e., to add hidden files to image.
|
|
*/
|
|
void iso_tree_set_ignore_hidden(IsoImage *image, int skip);
|
|
|
|
/**
|
|
* Get current setting for ignore_hidden.
|
|
*
|
|
* @see iso_tree_set_ignore_hidden
|
|
*/
|
|
int iso_tree_get_ignore_hidden(IsoImage *image);
|
|
|
|
/**
|
|
* Set whether to skip or not special files. Default behavior is to not skip
|
|
* them. Note that, despite of this setting, special files won't never be added
|
|
* to an image unless RR extensions were enabled.
|
|
*
|
|
* @param skip
|
|
* Bitmask to determine what kind of special files will be skipped:
|
|
* bit0: ignore FIFOs
|
|
* bit1: ignore Sockets
|
|
* bit2: ignore char devices
|
|
* bit3: ignore block devices
|
|
*/
|
|
void iso_tree_set_ignore_special(IsoImage *image, int skip);
|
|
|
|
/**
|
|
* Get current setting for ignore_special.
|
|
*
|
|
* @see iso_tree_set_ignore_special
|
|
*/
|
|
int iso_tree_get_ignore_special(IsoImage *image);
|
|
|
|
/**
|
|
* Set a callback function that libisofs will call for each file that is
|
|
* added to the given image by a recursive addition function. This includes
|
|
* image import.
|
|
*
|
|
* @param report
|
|
* pointer to a function that will be called just before a file will be
|
|
* added to the image. You can control whether the file will be in fact
|
|
* added or ignored.
|
|
* This function should return 1 to add the file, 0 to ignore it and
|
|
* continue, < 0 to abort the process
|
|
* NULL is allowed if you don't want any callback.
|
|
*/
|
|
void iso_tree_set_report_callback(IsoImage *image,
|
|
int (*report)(IsoFileSource *src));
|
|
|
|
/**
|
|
* Add a new node to the image tree, from an existing file.
|
|
*
|
|
* TODO comment Builder and Filesystem related issues when exposing both
|
|
*
|
|
* All attributes will be taken from the source file. The appropriate file
|
|
* type will be created.
|
|
*
|
|
* @param image
|
|
* The image
|
|
* @param parent
|
|
* The directory in the image tree where the node will be added.
|
|
* @param path
|
|
* The path of the file to add in the filesystem.
|
|
* @param node
|
|
* place where to store a pointer to the newly added file. No
|
|
* extra ref is addded, so you will need to call iso_node_ref() if you
|
|
* really need it. You can pass NULL in this parameter if you don't need
|
|
* the pointer.
|
|
* @return
|
|
* number of nodes in parent if success, < 0 otherwise
|
|
* Possible errors:
|
|
* ISO_NULL_POINTER, if image, parent or path are NULL
|
|
* ISO_NODE_NAME_NOT_UNIQUE, a node with same name already exists
|
|
* ISO_MEM_ERROR
|
|
*/
|
|
int iso_tree_add_node(IsoImage *image, IsoDir *parent, const char *path,
|
|
IsoNode **node);
|
|
|
|
/**
|
|
* Add the contents of a dir to a given directory of the iso tree.
|
|
*
|
|
* TODO comment Builder and Filesystem related issues when exposing both
|
|
*
|
|
* @param image
|
|
* TODO expose dir rec options and explain that here
|
|
* @param parent
|
|
* Directory on the image tree where to add the contents of the dir
|
|
* @param dir
|
|
* Path to a dir in the filesystem
|
|
* @return
|
|
* number of nodes in parent if success, < 0 otherwise
|
|
*/
|
|
int iso_tree_add_dir_rec(IsoImage *image, IsoDir *parent, const char *dir);
|
|
|
|
/**
|
|
* Locate a node by its path on image.
|
|
*
|
|
* @param node
|
|
* Location for a pointer to the node, it will filled with NULL if the
|
|
* given path does not exists on image.
|
|
* The node will be owned by the image and shouldn't be unref(). Just call
|
|
* iso_node_ref() to get your own reference to the node.
|
|
* Note that you can pass NULL is the only thing you want to do is check
|
|
* if a node with such path really exists.
|
|
* @return
|
|
* 1 found, 0 not found, < 0 error
|
|
*/
|
|
int iso_tree_path_to_node(IsoImage *image, const char *path, IsoNode **node);
|
|
|
|
/**
|
|
* Increments the reference counting of the given IsoDataSource.
|
|
*/
|
|
void iso_data_source_ref(IsoDataSource *src);
|
|
|
|
/**
|
|
* Decrements the reference counting of the given IsoDataSource, freeing it
|
|
* if refcount reach 0.
|
|
*/
|
|
void iso_data_source_unref(IsoDataSource *src);
|
|
|
|
/**
|
|
* Create a new IsoDataSource from a local file. This is suitable for
|
|
* accessing regular .iso images, or to acces drives via its block device
|
|
* and standard POSIX I/O calls.
|
|
*
|
|
* @param path
|
|
* The path of the file
|
|
* @param src
|
|
* Will be filled with the pointer to the newly created data source.
|
|
* @return
|
|
* 1 on success, < 0 on error.
|
|
*/
|
|
int iso_data_source_new_from_file(const char *path, IsoDataSource **src);
|
|
|
|
/**
|
|
* Get the status of the buffer used by a burn_source.
|
|
*
|
|
* @param b
|
|
* A burn_source previously obtained with
|
|
* iso_image_create_burn_source().
|
|
* @param size
|
|
* Will be filled with the total size of the buffer, in bytes
|
|
* @param free_bytes
|
|
* Will be filled with the bytes currently available in buffer
|
|
* @return
|
|
* < 0 error, > 0 state:
|
|
* 1="active" : input and consumption are active
|
|
* 2="ending" : input has ended without error
|
|
* 3="failing" : input had error and ended,
|
|
* 5="abandoned" : consumption has ended prematurely
|
|
* 6="ended" : consumption has ended without input error
|
|
* 7="aborted" : consumption has ended after input error
|
|
*/
|
|
int iso_ring_buffer_get_status(struct burn_source *b, size_t *size,
|
|
size_t *free_bytes);
|
|
|
|
#define ISO_MSGS_MESSAGE_LEN 4096
|
|
|
|
/**
|
|
* Control queueing and stderr printing of messages from libisofs.
|
|
* Severity may be one of "NEVER", "FATAL", "SORRY", "WARNING", "HINT",
|
|
* "NOTE", "UPDATE", "DEBUG", "ALL".
|
|
*
|
|
* @param queue_severity Gives the minimum limit for messages to be queued.
|
|
* Default: "NEVER". If you queue messages then you
|
|
* must consume them by iso_msgs_obtain().
|
|
* @param print_severity Does the same for messages to be printed directly
|
|
* to stderr.
|
|
* @param print_id A text prefix to be printed before the message.
|
|
* @return >0 for success, <=0 for error
|
|
*/
|
|
int iso_set_msgs_severities(char *queue_severity, char *print_severity,
|
|
char *print_id);
|
|
|
|
/**
|
|
* Obtain the oldest pending libisofs message from the queue which has at
|
|
* least the given minimum_severity. This message and any older message of
|
|
* lower severity will get discarded from the queue and is then lost forever.
|
|
*
|
|
* Severity may be one of "NEVER", "FATAL", "SORRY", "WARNING", "HINT",
|
|
* "NOTE", "UPDATE", "DEBUG", "ALL". To call with minimum_severity "NEVER"
|
|
* will discard the whole queue.
|
|
*
|
|
* @param error_code Will become a unique error code as listed in messages.h
|
|
* @param msg_text Must provide at least ISO_MSGS_MESSAGE_LEN bytes.
|
|
* @param os_errno Will become the eventual errno related to the message
|
|
* @param severity Will become the severity related to the message and
|
|
* should provide at least 80 bytes.
|
|
* @return 1 if a matching item was found, 0 if not, <0 for severe errors
|
|
*/
|
|
int iso_obtain_msgs(char *minimum_severity, int *error_code,
|
|
char msg_text[], int *os_errno, char severity[]);
|
|
|
|
/**
|
|
* Get a textual description of a libisofs error.
|
|
*/
|
|
const char *iso_error_to_msg(int errcode);
|
|
|
|
/**
|
|
* Set the minimum error severity that causes a libisofs operation to
|
|
* be aborted as soon as possible.
|
|
*
|
|
* @param severity
|
|
* one of "FAILURE", "SORRY", "WARNING", "HINT", "NOTE". Severities
|
|
* greater than SORRY always cause program to abort. Severities under
|
|
* NOTE won't never cause function abort.
|
|
* @return
|
|
* Previous abort priority on success, < 0 on error.
|
|
*/
|
|
int iso_set_abort_severity(char *severity);
|
|
|
|
/**
|
|
* Return the messenger object handle used by libisofs. This handle
|
|
* may be used by related libraries to their own compatible
|
|
* messenger objects and thus to direct their messages to the libisofs
|
|
* message queue. See also: libburn, API function burn_set_messenger().
|
|
*
|
|
* @return the handle. Do only use with compatible
|
|
*/
|
|
void *iso_get_messenger();
|
|
|
|
/**
|
|
* Take a ref to the given IsoFileSource.
|
|
*/
|
|
void iso_file_source_ref(IsoFileSource *src);
|
|
|
|
/**
|
|
* Drop your ref to the given IsoFileSource, eventually freeing the associated
|
|
* system resources.
|
|
*/
|
|
void iso_file_source_unref(IsoFileSource *src);
|
|
|
|
/*
|
|
* this are just helpers to invoque methods in class
|
|
*/
|
|
|
|
/**
|
|
* Get the path, relative to the filesystem this file source
|
|
* belongs to.
|
|
*
|
|
* @return
|
|
* the path of the FileSource inside the filesystem, it should be
|
|
* freed when no more needed.
|
|
*/
|
|
char* iso_file_source_get_path(IsoFileSource *src);
|
|
|
|
/**
|
|
* Get the name of the file, with the dir component of the path.
|
|
*
|
|
* @return
|
|
* the name of the file, it should be freed when no more needed.
|
|
*/
|
|
char* iso_file_source_get_name(IsoFileSource *src);
|
|
|
|
/**
|
|
* Get information about the file.
|
|
* @return
|
|
* 1 success, < 0 error
|
|
* Error codes:
|
|
* ISO_FILE_ACCESS_DENIED
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
*/
|
|
int iso_file_source_lstat(IsoFileSource *src, struct stat *info);
|
|
|
|
/**
|
|
* Check if the process has access to read file contents. Note that this
|
|
* is not necessarily related with (l)stat functions. For example, in a
|
|
* filesystem implementation to deal with an ISO image, if the user has
|
|
* read access to the image it will be able to read all files inside it,
|
|
* despite of the particular permission of each file in the RR tree, that
|
|
* are what the above functions return.
|
|
*
|
|
* @return
|
|
* 1 if process has read access, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ACCESS_DENIED
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
*/
|
|
int iso_file_source_access(IsoFileSource *src);
|
|
|
|
/**
|
|
* Get information about the file. If the file is a symlink, the info
|
|
* returned refers to the destination.
|
|
*
|
|
* @return
|
|
* 1 success, < 0 error
|
|
* Error codes:
|
|
* ISO_FILE_ACCESS_DENIED
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
*/
|
|
int iso_file_source_stat(IsoFileSource *src, struct stat *info);
|
|
|
|
/**
|
|
* Opens the source.
|
|
* @return 1 on success, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ALREADY_OPENNED
|
|
* ISO_FILE_ACCESS_DENIED
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
*/
|
|
int iso_file_source_open(IsoFileSource *src);
|
|
|
|
/**
|
|
* Close a previuously openned file
|
|
* @return 1 on success, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
* ISO_FILE_NOT_OPENNED
|
|
*/
|
|
int iso_file_source_close(IsoFileSource *src);
|
|
|
|
/**
|
|
* Attempts to read up to count bytes from the given source into
|
|
* the buffer starting at buf.
|
|
*
|
|
* The file src must be open() before calling this, and close() when no
|
|
* more needed. Not valid for dirs. On symlinks it reads the destination
|
|
* file.
|
|
*
|
|
* @return
|
|
* number of bytes read, 0 if EOF, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
* ISO_FILE_NOT_OPENNED
|
|
* ISO_WRONG_ARG_VALUE -> if count == 0
|
|
* ISO_FILE_IS_DIR
|
|
* ISO_MEM_ERROR
|
|
* ISO_INTERRUPTED
|
|
*/
|
|
int iso_file_source_read(IsoFileSource *src, void *buf, size_t count);
|
|
|
|
/**
|
|
* Read a directory.
|
|
*
|
|
* Each call to this function will return a new children, until we reach
|
|
* the end of file (i.e, no more children), in that case it returns 0.
|
|
*
|
|
* The dir must be open() before calling this, and close() when no more
|
|
* needed. Only valid for dirs.
|
|
*
|
|
* Note that "." and ".." children MUST NOT BE returned.
|
|
*
|
|
* @param child
|
|
* pointer to be filled with the given child. Undefined on error or OEF
|
|
* @return
|
|
* 1 on success, 0 if EOF (no more children), < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
* ISO_FILE_NOT_OPENNED
|
|
* ISO_FILE_IS_NOT_DIR
|
|
* ISO_MEM_ERROR
|
|
*/
|
|
int iso_file_source_readdir(IsoFileSource *src, IsoFileSource **child);
|
|
|
|
/**
|
|
* Read the destination of a symlink. You don't need to open the file
|
|
* to call this.
|
|
*
|
|
* @param buf
|
|
* allocated buffer of at least bufsiz bytes.
|
|
* The dest. will be copied there, and it will be NULL-terminated
|
|
* @param bufsiz
|
|
* characters to be copied. Destination link will be truncated if
|
|
* it is larger than given size. This include the \0 character.
|
|
* @return
|
|
* 1 on success, < 0 on error
|
|
* Error codes:
|
|
* ISO_FILE_ERROR
|
|
* ISO_NULL_POINTER
|
|
* ISO_WRONG_ARG_VALUE -> if bufsiz <= 0
|
|
* ISO_FILE_IS_NOT_SYMLINK
|
|
* ISO_MEM_ERROR
|
|
* ISO_FILE_BAD_PATH
|
|
* ISO_FILE_DOESNT_EXIST
|
|
*
|
|
*/
|
|
int iso_file_source_readlink(IsoFileSource *src, char *buf, size_t bufsiz);
|
|
|
|
/**
|
|
* Get the filesystem for this source. No extra ref is added, so you
|
|
* musn't unref the IsoFilesystem.
|
|
*
|
|
* @return
|
|
* The filesystem, NULL on error
|
|
*/
|
|
IsoFilesystem* iso_file_source_get_filesystem(IsoFileSource *src);
|
|
|
|
/**
|
|
* Take a ref to the given IsoFilesystem
|
|
*/
|
|
void iso_filesystem_ref(IsoFilesystem *fs);
|
|
|
|
/**
|
|
* Drop your ref to the given IsoFilesystem, evetually freeing associated
|
|
* resources.
|
|
*/
|
|
void iso_filesystem_unref(IsoFilesystem *fs);
|
|
|
|
/**
|
|
* Create a new IsoFilesystem to access a existent ISO image.
|
|
*
|
|
* @param src
|
|
* Data source to access data.
|
|
* @param opts
|
|
* Image read options
|
|
* @param msgid
|
|
* TODO
|
|
* @param fs
|
|
* Will be filled with a pointer to the filesystem that can be used
|
|
* to access image contents.
|
|
* @param
|
|
* 1 on success, < 0 on error
|
|
*/
|
|
int iso_image_filesystem_new(IsoDataSource *src, struct iso_read_opts *opts,
|
|
int msgid, IsoImageFilesystem **fs);
|
|
|
|
/**
|
|
* Get the volset identifier for an existent image. The returned string belong
|
|
* to the IsoImageFilesystem and shouldn't be free() nor modified.
|
|
*/
|
|
const char *iso_image_fs_get_volset_id(IsoImageFilesystem *fs);
|
|
|
|
/**
|
|
* Get the volume identifier for an existent image. The returned string belong
|
|
* to the IsoImageFilesystem and shouldn't be free() nor modified.
|
|
*/
|
|
const char *iso_image_fs_get_volume_id(IsoImageFilesystem *fs);
|
|
|
|
/**
|
|
* Get the publisher identifier for an existent image. The returned string
|
|
* belong to the IsoImageFilesystem and shouldn't be free() nor modified.
|
|
*/
|
|
const char *iso_image_fs_get_publisher_id(IsoImageFilesystem *fs);
|
|
|
|
/**
|
|
* Get the data preparer identifier for an existent image. The returned string
|
|
* belong to the IsoImageFilesystem and shouldn't be free() nor modified.
|
|
*/
|
|
const char *iso_image_fs_get_data_preparer_id(IsoImageFilesystem *fs);
|
|
|
|
/**
|
|
* Get the system identifier for an existent image. The returned string belong
|
|
* to the IsoImageFilesystem and shouldn't be free() nor modified.
|
|
*/
|
|
const char *iso_image_fs_get_system_id(IsoImageFilesystem *fs);
|
|
|
|
/**
|
|
* Get the application identifier for an existent image. The returned string
|
|
* belong to the IsoImageFilesystem and shouldn't be free() nor modified.
|
|
*/
|
|
const char *iso_image_fs_get_application_id(IsoImageFilesystem *fs);
|
|
|
|
/**
|
|
* Get the copyright file identifier for an existent image. The returned string
|
|
* belong to the IsoImageFilesystem and shouldn't be free() nor modified.
|
|
*/
|
|
const char *iso_image_fs_get_copyright_file_id(IsoImageFilesystem *fs);
|
|
|
|
/**
|
|
* Get the abstract file identifier for an existent image. The returned string
|
|
* belong to the IsoImageFilesystem and shouldn't be free() nor modified.
|
|
*/
|
|
const char *iso_image_fs_get_abstract_file_id(IsoImageFilesystem *fs);
|
|
|
|
/**
|
|
* Get the biblio file identifier for an existent image. The returned string
|
|
* belong to the IsoImageFilesystem and shouldn't be free() nor modified.
|
|
*/
|
|
const char *iso_image_fs_get_biblio_file_id(IsoImageFilesystem *fs);
|
|
|
|
#endif /*LIBISO_LIBISOFS_H_*/
|