rtl-archive.c File Reference

RTEMS Run-Time Linker Archive. More...

#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fnmatch.h>
#include <inttypes.h>
#include <stdio.h>
#include <string.h>
#include <rtems/libio_.h>
#include <rtems/rtl/rtl.h>
#include "rtl-chain-iterator.h"
#include <rtems/rtl/rtl-trace.h>
#include "rtl-string.h"
#include "rtl-error.h"

Data Structures
struct	rtems_rtl_archive_chain_data
struct	rtems_rtl_archive_find_data
struct	rtems_rtl_archive_obj_data

Macros
#define	RTEMS_RTL_AR_IDENT   "!<arch>\n"
#define	RTEMS_RTL_AR_IDENT_SIZE   (sizeof (RTEMS_RTL_AR_IDENT) - 1)
#define	RTEMS_RTL_AR_FHDR_BASE   RTEMS_RTL_AR_IDENT_SIZE
#define	RTEMS_RTL_AR_FNAME   (0)
#define	RTEMS_RTL_AR_FNAME_SIZE   (16)
#define	RTEMS_RTL_AR_SIZE   (48)
#define	RTEMS_RTL_AR_SIZE_SIZE   (10)
#define	RTEMS_RTL_AR_MAGIC   (58)
#define	RTEMS_RTL_AR_MAGIC_SIZE   (2)
#define	RTEMS_RTL_AR_FHDR_SIZE   (60)
#define	RTEMS_RTL_MAX_FILE_SIZE   (256)

Typedefs
typedef bool(*	rtems_rtl_archive_iterator) (rtems_rtl_archive *archive, void *data)
typedef struct rtems_rtl_archive_chain_data	rtems_rtl_archive_chain_data
typedef struct rtems_rtl_archive_find_data	rtems_rtl_archive_find_data
typedef struct rtems_rtl_archive_obj_data	rtems_rtl_archive_obj_data

Functions
void	rtems_rtl_archives_open (rtems_rtl_archives *archives, const char *config)
void	rtems_rtl_archives_close (rtems_rtl_archives *archives)
bool	rtems_rtl_archives_refresh (rtems_rtl_archives *archives)
bool	rtems_rtl_archive_load (rtems_rtl_archives *archives, const char *name)
rtems_rtl_archive_search	rtems_rtl_archive_obj_load (rtems_rtl_archives *archives, const char *symbol, bool load)
bool	rtems_rtl_obj_archive_find_obj (int fd, size_t fsize, const char **name, off_t *ooffset, size_t *osize, off_t *extended_file_names, rtems_rtl_archive_error error)

Detailed Description

RTEMS Run-Time Linker Archive.

Macro Definition Documentation

RTEMS_RTL_AR_IDENT

#define RTEMS_RTL_AR_IDENT   "!<arch>\n"

Archive headers.

Typedef Documentation

rtems_rtl_archive_chain_data

typedef struct rtems_rtl_archive_chain_data rtems_rtl_archive_chain_data

Chain iterator data.

rtems_rtl_archive_iterator

typedef bool(* rtems_rtl_archive_iterator) (rtems_rtl_archive *archive, void *data)

Archive iterator.

Function Documentation

rtems_rtl_archive_load()

bool rtems_rtl_archive_load	(	rtems_rtl_archives *	archives,
		const char *	name
	)

Load an archive.

Parameters

archives	The archives data to search.
name	The archive to load.

Return values

true	The archive is loaded.

rtems_rtl_archive_obj_load()

rtems_rtl_archive_search rtems_rtl_archive_obj_load	(	rtems_rtl_archives *	archives,
		const char *	symbol,
		bool	load
	)

Search for a symbol and load the first object file that has the symbol.

Parameters

archives	The archives data to search.
symbol	The symbol name to search for.
load	If load the object file the symbol is found in else return the found not found status.

rtems_rtl_archives_close()

void rtems_rtl_archives_close

(

rtems_rtl_archives *

archives

)

Close the RTL archives support.

Parameters

archives

The archives data to close.

rtems_rtl_archives_open()

void rtems_rtl_archives_open	(	rtems_rtl_archives *	archives,
		const char *	config
	)

Open the RTL archives support with the specified configration file.

Parameters

archives	The archives data to open.
config	The path to the configuration file.

Returns

bool Returns is the archives are open.

rtems_rtl_archives_refresh()

bool rtems_rtl_archives_refresh

(

rtems_rtl_archives *

archives

)

Refresh the archives data. Check if the configuration has changes and if it has reload it. Check each path in the configuration and creates archive instances for new archives and remove archives not present any more.

Refreshing is a development aid so reboots can be avoided as users trial configurations that work.

Parameters

archives

The archives data to refresh.

Return values

false

The refresh failed, an error will have been set.

rtems_rtl_obj_archive_find_obj()

bool rtems_rtl_obj_archive_find_obj	(	int	fd,
		size_t	fsize,
		const char **	name,
		off_t *	offset,
		size_t *	size,
		off_t *	extended_names,
		rtems_rtl_archive_error	error
	)

Find a module in an archive returning the offset in the archive and the size. If the name field is pointing to a string pointer and that poniter is NULL and the offset is valid the name is extracted from the archive and filled in. This is used when loading a file from the archive after a symbol is found. The file name is not know and could be extended which requires searching the extended string table in the archive.

Parameters

fd	Open file handle for the archive.
fsize	Size of the archive. name Pointer to the name string.
offset	The offset of the file in the archive.
size	The size of the file in the archive.
extended_names	The offset in the archive for the extended names.
error	The error handler called on an error.

Return values

true	The file was found in the archive.
false	The file was not found.