minix/lib/libc/citrus/citrus_esdb.c
Ben Gras 2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree
2012-02-14 14:52:02 +01:00

355 lines
8.1 KiB
C

/* $NetBSD: citrus_esdb.c,v 1.5 2008/02/09 14:56:20 junyoung Exp $ */
/*-
* Copyright (c)2003 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: citrus_esdb.c,v 1.5 2008/02/09 14:56:20 junyoung Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <paths.h>
#include <sys/types.h>
#include "citrus_namespace.h"
#include "citrus_types.h"
#include "citrus_bcs.h"
#include "citrus_region.h"
#include "citrus_memstream.h"
#include "citrus_mmap.h"
#include "citrus_lookup.h"
#include "citrus_db.h"
#include "citrus_db_hash.h"
#include "citrus_esdb.h"
#include "citrus_esdb_file.h"
#define ESDB_DIR "esdb.dir"
#define ESDB_ALIAS "esdb.alias"
/*
* _citrus_esdb_alias:
* resolve encoding scheme name aliases.
*/
const char *
_citrus_esdb_alias(const char *esname, char *buf, size_t bufsize)
{
return _lookup_alias(_PATH_ESDB "/" ESDB_ALIAS, esname, buf, bufsize,
_LOOKUP_CASE_IGNORE);
}
/*
* conv_esdb:
* external representation -> local structure.
*/
static int
conv_esdb(struct _citrus_esdb *esdb, struct _region *fr)
{
int ret;
struct _citrus_db *db;
uint32_t version, num_charsets, csid, i, tmp;
char buf[100];
const char *str;
/* open db */
ret = _db_open(&db, fr, _CITRUS_ESDB_MAGIC, &_db_hash_std, NULL);
if (ret)
goto err0;
/* check version */
ret = _db_lookup32_by_s(db, _CITRUS_ESDB_SYM_VERSION, &version, NULL);
if (ret)
goto err1;
switch (version) {
case 0x00000001:
/* current version */
/* initial version */
break;
default:
ret = EFTYPE;
goto err1;
}
/* get encoding/variable */
ret = _db_lookupstr_by_s(db, _CITRUS_ESDB_SYM_ENCODING, &str, NULL);
if (ret)
goto err1;
esdb->db_encname = strdup(str);
if (esdb->db_encname == NULL) {
ret = errno;
goto err1;
}
esdb->db_len_variable = 0;
esdb->db_variable = NULL;
ret = _db_lookupstr_by_s(db, _CITRUS_ESDB_SYM_VARIABLE, &str, NULL);
if (ret == 0) {
esdb->db_len_variable = strlen(str)+1;
esdb->db_variable = strdup(str);
if (esdb->db_variable == NULL) {
ret = errno;
goto err2;
}
} else if (ret != ENOENT)
goto err2;
/* get number of charsets */
ret = _db_lookup32_by_s(db, _CITRUS_ESDB_SYM_NUM_CHARSETS,
&num_charsets, NULL);
if (ret)
goto err3;
esdb->db_num_charsets = num_charsets;
/* get invalid character */
ret = _db_lookup32_by_s(db, _CITRUS_ESDB_SYM_INVALID, &tmp, NULL);
if (ret == 0) {
esdb->db_use_invalid = 1;
esdb->db_invalid = tmp;
} else if (ret == ENOENT)
esdb->db_use_invalid = 0;
else
goto err3;
/* get charsets */
esdb->db_charsets = malloc(num_charsets * sizeof(*esdb->db_charsets));
if (esdb->db_charsets == NULL) {
ret = errno;
goto err3;
}
for (i = 0; i < num_charsets; i++) {
snprintf(buf, sizeof(buf),
_CITRUS_ESDB_SYM_CSID_PREFIX "%d", i);
ret = _db_lookup32_by_s(db, buf, &csid, NULL);
if (ret)
goto err4;
esdb->db_charsets[i].ec_csid = csid;
snprintf(buf, sizeof(buf),
_CITRUS_ESDB_SYM_CSNAME_PREFIX "%d", i);
ret = _db_lookupstr_by_s(db, buf, &str, NULL);
if (ret)
goto err4;
esdb->db_charsets[i].ec_csname = strdup(str);
if (esdb->db_charsets[i].ec_csname == NULL) {
ret = errno;
goto err4;
}
}
_db_close(db);
return 0;
err4:
for (; i > 0; i--)
free(esdb->db_charsets[i - 1].ec_csname);
free(esdb->db_charsets);
err3:
free(esdb->db_variable);
err2:
free(esdb->db_encname);
err1:
_db_close(db);
if (ret == ENOENT)
ret = EFTYPE;
err0:
return ret;
}
/*
* _citrus_esdb_open:
* open an ESDB file.
*/
int
_citrus_esdb_open(struct _citrus_esdb *db, const char *esname)
{
int ret;
const char *realname, *encfile;
char buf1[PATH_MAX], buf2[PATH_MAX], path[PATH_MAX];
struct _region fr;
_DIAGASSERT(esname != NULL);
snprintf(path, sizeof(path), "%s/%s", _PATH_ESDB, ESDB_ALIAS);
realname = _lookup_alias(path, esname, buf1, sizeof(buf1),
_LOOKUP_CASE_IGNORE);
snprintf(path, sizeof(path), "%s/%s", _PATH_ESDB, ESDB_DIR);
encfile = _lookup_simple(path, realname, buf2, sizeof(buf2),
_LOOKUP_CASE_IGNORE);
if (encfile==NULL)
return ENOENT;
/* open file */
snprintf(path, sizeof(path), "%s/%s", _PATH_ESDB, encfile);
ret = _map_file(&fr, path);
if (ret)
return ret;
ret = conv_esdb(db, &fr);
_unmap_file(&fr);
return ret;
}
/*
* _citrus_esdb_close:
* free an ESDB.
*/
void
_citrus_esdb_close(struct _citrus_esdb *db)
{
int i;
_DIAGASSERT(db != NULL);
_DIAGASSERT(db->db_num_charsets == 0 || db->db_charsets != NULL);
for (i = 0; i < db->db_num_charsets; i++)
free(db->db_charsets[i].ec_csname);
db->db_num_charsets = 0;
free(db->db_charsets); db->db_charsets = NULL;
free(db->db_encname); db->db_encname = NULL;
db->db_len_variable = 0;
free(db->db_variable); db->db_variable = NULL;
}
/*
* _citrus_esdb_free_list:
* free the list.
*/
void
_citrus_esdb_free_list(char **list, size_t num)
{
size_t i;
for (i = 0; i < num; i++)
free(list[i]);
free(list);
}
/*
* _citrus_esdb_get_list:
* get esdb entries.
*/
int
_citrus_esdb_get_list(char ***rlist, size_t *rnum)
{
int ret;
struct _region key;
size_t num;
struct _citrus_lookup *cla, *cld;
char **list, **q;
char buf[PATH_MAX];
num = 0;
ret = _lookup_seq_open(&cla, _PATH_ESDB "/" ESDB_ALIAS,
_LOOKUP_CASE_IGNORE);
if (ret)
goto quit0;
ret = _lookup_seq_open(&cld, _PATH_ESDB "/" ESDB_DIR,
_LOOKUP_CASE_IGNORE);
if (ret)
goto quit1;
/* count number of entries */
num = _lookup_get_num_entries(cla) + _lookup_get_num_entries(cld);
_lookup_seq_rewind(cla);
_lookup_seq_rewind(cld);
/* allocate list pointer space */
list = malloc(num * sizeof(char *));
num = 0;
if (list == NULL) {
ret = errno;
goto quit3;
}
/* get alias entries */
while ((ret = _lookup_seq_next(cla, &key, NULL)) == 0) {
snprintf(buf, sizeof(buf), "%.*s",
(int)_region_size(&key),
(const char *)_region_head(&key));
_bcs_convert_to_lower(buf);
list[num] = strdup(buf);
if (list[num] == NULL) {
ret = errno;
goto quit3;
}
num++;
}
if (ret != ENOENT)
goto quit3;
/* get dir entries */
while ((ret = _lookup_seq_next(cld, &key, NULL)) == 0) {
/* check duplicated entry */
snprintf(buf, sizeof(buf), "%.*s",
(int)_region_size(&key),
(const char *)_region_head(&key));
_bcs_convert_to_lower(buf);
ret = _lookup_seq_lookup(cla, buf, NULL);
if (ret) {
if (ret != ENOENT)
goto quit3;
/* not duplicated */
list[num] = strdup(buf);
if (list[num] == NULL) {
ret = errno;
goto quit3;
}
num++;
}
}
if (ret != ENOENT)
goto quit3;
ret = 0;
q = realloc(list, num * sizeof(char *));
if (!q) {
ret = ENOMEM;
goto quit3;
}
list = q;
*rlist = list;
*rnum = num;
quit3:
if (ret)
_citrus_esdb_free_list(list, num);
_lookup_seq_close(cld);
quit1:
_lookup_seq_close(cla);
quit0:
return ret;
}