rockridge_read.c File Reference

#include "libisofs.h"
#include "ecma119.h"
#include "util.h"
#include "rockridge.h"
#include "messages.h"
#include <sys/stat.h>
#include <stdlib.h>
#include <string.h>

Include dependency graph for rockridge_read.c:

Go to the source code of this file.

Data Structures
struct	susp_iterator

Macros
#define	ISO_SUSP_MAX_CE_BYTES   (1024 * 1024)

Functions
SuspIterator *	susp_iter_new (IsoDataSource *src, struct ecma119_dir_record *record, uint32_t fs_blocks, uint8_t len_skp, int msgid)
int	susp_iter_next (SuspIterator *iter, struct susp_sys_user_entry **sue, int flag)
void	susp_iter_free (SuspIterator *iter)
int	read_rr_PX (struct susp_sys_user_entry *px, struct stat *st)
int	read_rr_TF (struct susp_sys_user_entry *tf, struct stat *st)
int	read_rr_NM (struct susp_sys_user_entry *nm, char **name, int *cont)
int	read_rr_SL (struct susp_sys_user_entry *sl, char **dest, int *cont)
int	read_rr_PN (struct susp_sys_user_entry *pn, struct stat *st)
int	read_aaip_AA (struct susp_sys_user_entry *sue, unsigned char **aa_string, size_t *aa_size, size_t *aa_len, size_t *prev_field, int *is_done, int flag)
int	read_aaip_AL (struct susp_sys_user_entry *sue, unsigned char **aa_string, size_t *aa_size, size_t *aa_len, size_t *prev_field, int *is_done, int flag)
int	read_zisofs_ZF (struct susp_sys_user_entry *zf, uint8_t algorithm[2], uint8_t *header_size_div4, uint8_t *block_size_log2, uint64_t *uncompressed_size, int flag)

Macro Definition Documentation

ISO_SUSP_MAX_CE_BYTES

#define ISO_SUSP_MAX_CE_BYTES   (1024 * 1024)

Definition at line 75 of file rockridge_read.c.

Function Documentation

read_aaip_AA()

int read_aaip_AA	(	struct susp_sys_user_entry *	sue,
		unsigned char **	aa_string,
		size_t *	aa_size,
		size_t *	aa_len,
		size_t *	prev_field,
		int *	is_done,
		int	flag
	)

Collects the AAIP field string from single AAIP fields. (see doc/susp_aaip_1_0.txt)

Parameters

aa_string	Storage location of the emerging string. Begin with *aa_string == NULL, or own malloc() storage.
aa_size	Current allocated size of aa_string. Begin with *aa_size == 0, or own storage size.
aa_len	Current occupied size of aa_string. Begin with *aa_len == 0
prev_field	Returns the index of start of the previous field in the string.
is_done	The current completion state of the AAIP field string. Fields will be ignored as soon as it is 1. Begin with *is_done == 0
flag	Unused yet. Submit 0.

Returns

1 on success, < 0 on error

Definition at line 493 of file rockridge_read.c.

References susp_sys_user_entry::AL, aaip_AL::comps, susp_sys_user_entry::data, aaip_AL::flags, ISO_OUT_OF_MEM, ISO_SUCCESS, ISO_WRONG_RR, susp_sys_user_entry::len_sue, and susp_sys_user_entry::version.

read_aaip_AL()

int read_aaip_AL	(	struct susp_sys_user_entry *	sue,
		unsigned char **	aa_string,
		size_t *	aa_size,
		size_t *	aa_len,
		size_t *	prev_field,
		int *	is_done,
		int	flag
	)

Collects the AAIP field string from single AL fields. (see doc/susp_aaip_2_0.txt)

Definition at line 567 of file rockridge_read.c.

References susp_sys_user_entry::AL, aaip_AL::comps, susp_sys_user_entry::data, aaip_AL::flags, ISO_OUT_OF_MEM, ISO_SUCCESS, ISO_WRONG_RR, susp_sys_user_entry::len_sue, and susp_sys_user_entry::version.

read_rr_NM()

int read_rr_NM	(	struct susp_sys_user_entry *	nm,
		char **	name,
		int *	cont
	)

Read a RR NM entry (RRIP, 4.1.4), and appends the name stored there to the given name. You can pass a pointer to NULL as name.

Returns

1 on success, < 0 on error

Definition at line 318 of file rockridge_read.c.

References susp_sys_user_entry::data, rr_NM::flags, ISO_NULL_POINTER, ISO_OUT_OF_MEM, ISO_SUCCESS, iso_util_strcopy(), ISO_WRONG_ARG_VALUE, ISO_WRONG_RR, susp_sys_user_entry::len_sue, rr_NM::name, susp_sys_user_entry::NM, and susp_sys_user_entry::sig.

read_rr_PN()

int read_rr_PN	(	struct susp_sys_user_entry *	pn,
		struct stat *	st
	)

Fills a struct stat with the values of a Rock Ridge PN entry (RRIP, 4.1.2).

Returns

1 on success, < 0 on error

Definition at line 457 of file rockridge_read.c.

References susp_sys_user_entry::data, rr_PN::high, ISO_NULL_POINTER, iso_read_bb(), ISO_SUCCESS, ISO_WRONG_ARG_VALUE, ISO_WRONG_RR, susp_sys_user_entry::len_sue, rr_PN::low, susp_sys_user_entry::PN, and susp_sys_user_entry::sig.

read_rr_PX()

int read_rr_PX	(	struct susp_sys_user_entry *	px,
		struct stat *	st
	)

Fills a struct stat with the values of a Rock Ridge PX entry (RRIP, 4.1.1).

Returns

1 on success, < 0 on error

Definition at line 190 of file rockridge_read.c.

References susp_sys_user_entry::data, rr_PX::gid, ISO_NULL_POINTER, iso_read_bb(), ISO_WRONG_ARG_VALUE, ISO_WRONG_RR, susp_sys_user_entry::len_sue, rr_PX::links, rr_PX::mode, susp_sys_user_entry::PX, rr_PX::serial, susp_sys_user_entry::sig, and rr_PX::uid.

read_rr_SL()

int read_rr_SL	(	struct susp_sys_user_entry *	sl,
		char **	dest,
		int *	cont
	)

Read a SL RR entry (RRIP, 4.1.3), checking if the destination continues.

Parameters

cont	0 not continue, 1 continue, 2 continue component

Returns

1 on success, < 0 on error

Definition at line 368 of file rockridge_read.c.

References rr_SL::comps, susp_sys_user_entry::data, rr_SL::flags, ISO_NULL_POINTER, ISO_OUT_OF_MEM, ISO_SUCCESS, ISO_UNSUPPORTED_RR, iso_util_strcopy(), ISO_WRONG_ARG_VALUE, susp_sys_user_entry::len_sue, susp_sys_user_entry::sig, and susp_sys_user_entry::SL.

read_rr_TF()

int read_rr_TF	(	struct susp_sys_user_entry *	tf,
		struct stat *	st
	)

Fills a struct stat with the values of a Rock Ridge TF entry (RRIP, 4.1.6)

Returns

1 on success, < 0 on error

Definition at line 223 of file rockridge_read.c.

References susp_sys_user_entry::data, rr_TF::flags, iso_datetime_read_17(), iso_datetime_read_7(), ISO_NULL_POINTER, ISO_SUCCESS, ISO_WRONG_ARG_VALUE, ISO_WRONG_RR, susp_sys_user_entry::len_sue, susp_sys_user_entry::sig, rr_TF::t_stamps, and susp_sys_user_entry::TF.

read_zisofs_ZF()

int read_zisofs_ZF	(	struct susp_sys_user_entry *	zf,
		uint8_t	algorithm[2],
		uint8_t *	header_size_div4,
		uint8_t *	block_size_log2,
		uint64_t *	uncompressed_size,
		int	flag
	)

Reads the zisofs parameters from a ZF field (see doc/zisofs_format.txt and doc/zisofs2_format.txt).

Returns

1 on success, < 0 on error

Definition at line 626 of file rockridge_read.c.

References susp_sys_user_entry::data, ISO_NULL_POINTER, iso_read_bb(), iso_read_lsb64(), ISO_SUCCESS, ISO_WRONG_ARG_VALUE, ISO_WRONG_RR, susp_sys_user_entry::len_sue, zisofs_ZF::parameters, susp_sys_user_entry::sig, susp_sys_user_entry::version, and susp_sys_user_entry::ZF.

susp_iter_free()

void susp_iter_free

(

SuspIterator *

iter

)

Free a given susp iterator.

Definition at line 178 of file rockridge_read.c.

References susp_iterator::buffer.

Referenced by read_root_susp_entries().

susp_iter_new()

SuspIterator* susp_iter_new	(	IsoDataSource *	src,
		struct ecma119_dir_record *	record,
		uint32_t	fs_blocks,
		uint8_t	len_skp,
		int	msgid
	)

Definition at line 52 of file rockridge_read.c.

References susp_iterator::base, susp_iterator::buffer, susp_iterator::ce_len, ecma119_dir_record::file_id, susp_iterator::fs_blocks, ecma119_dir_record::len_dr, ecma119_dir_record::len_fi, susp_iterator::msgid, susp_iterator::pos, susp_iterator::size, and susp_iterator::src.

Referenced by read_root_susp_entries().

susp_iter_next()

int susp_iter_next	(	SuspIterator *	iter,
		struct susp_sys_user_entry **	sue,
		int	flag
	)

Get the next SUSP System User Entry using given iterator.

Parameters

sue	Pointer to the next susp entry. It refers to an internal buffer and it's not guaranteed to be allocated after calling susp_iter_next() again. Thus, if you need to keep some entry you have to do a copy.

Returns

1 on success, 0 if no more entries, < 0 error

Definition at line 81 of file rockridge_read.c.

References susp_iterator::base, susp_CE::block, BLOCK_SIZE, susp_iterator::buffer, susp_sys_user_entry::CE, susp_iterator::ce_block, susp_iterator::ce_len, susp_iterator::ce_off, susp_sys_user_entry::data, DIV_UP, susp_iterator::fs_blocks, iso_msg_submit(), iso_read_bb(), ISO_SUCCESS, ISO_SUSP_MAX_CE_BYTES, ISO_SUSP_WRONG_CE_SIZE, ISO_UNSUPPORTED_SUSP, ISO_WRONG_RR, susp_CE::len, susp_sys_user_entry::len_sue, susp_iterator::msgid, susp_CE::offset, susp_iterator::pos, iso_data_source::read_block, susp_iterator::size, susp_iterator::src, susp_iter_next(), and SUSP_SIG.

Referenced by read_root_susp_entries(), and susp_iter_next().