minix/lib/nbsd_libc/nls/catopen.c
Gianluca Guida ad4dda469f Port NetBSD libc functions to Minix.
This patch contains changes to NetBSD libc code base to make it
compile and work on Minix. Some of them are due to actual NetBSD
libc bugs, as we're compiling it in non-reentrant mode and with
a.out support, something not exactly frequent in NetBSD.
Others are proper fixes to port it to Minix (mostly sa_len
parameter missing in socket and a few mmap from files).
2011-02-15 12:19:40 +00:00

208 lines
4.9 KiB
C

/* $NetBSD: catopen.c,v 1.28 2009/03/10 13:15:40 joerg Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by J.T. Conklin.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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: catopen.c,v 1.28 2009/03/10 13:15:40 joerg Exp $");
#endif /* LIBC_SCCS and not lint */
#define _NLS_PRIVATE
#include "namespace.h"
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <assert.h>
#include <fcntl.h>
#include <limits.h>
#include <locale.h>
#include <nl_types.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef HAVE_CITRUS
#include "citrus_namespace.h"
#include "citrus_bcs.h"
#include "citrus_region.h"
#include "citrus_lookup.h"
#include "citrus_aliasname_local.h"
#else
#include "aliasname_local.h"
#endif
#define NLS_ALIAS_DB "/usr/share/nls/nls.alias"
#define NLS_DEFAULT_PATH "/usr/share/nls/%L/%N.cat:/usr/share/nls/%N/%L"
#define NLS_DEFAULT_LANG "C"
#ifdef __weak_alias
__weak_alias(catopen, _catopen)
#endif
static nl_catd load_msgcat __P((const char *));
nl_catd
_catopen(name, oflag)
const char *name;
int oflag;
{
char tmppath[PATH_MAX+1];
const char *nlspath;
const char *lang, *reallang;
char *t;
const char *s, *u;
nl_catd catd;
char langbuf[PATH_MAX];
if (name == NULL || *name == '\0')
return (nl_catd)-1;
/* absolute or relative path? */
if (strchr(name, '/'))
return load_msgcat(name);
if (issetugid() || (nlspath = getenv("NLSPATH")) == NULL)
nlspath = NLS_DEFAULT_PATH;
if (oflag == NL_CAT_LOCALE) {
lang = setlocale(LC_MESSAGES, NULL);
}
else {
lang = getenv("LANG");
}
if (lang == NULL || strchr(lang, '/'))
lang = NLS_DEFAULT_LANG;
reallang = __unaliasname(NLS_ALIAS_DB, lang, langbuf, sizeof(langbuf));
if (reallang == NULL)
reallang = lang;
s = nlspath;
t = tmppath;
do {
while (*s && *s != ':') {
if (*s == '%') {
switch (*(++s)) {
case 'L': /* locale */
u = reallang;
while (*u && t < tmppath + PATH_MAX)
*t++ = *u++;
break;
case 'N': /* name */
u = name;
while (*u && t < tmppath + PATH_MAX)
*t++ = *u++;
break;
case 'l': /* lang */
case 't': /* territory */
case 'c': /* codeset */
break;
default:
if (t < tmppath + PATH_MAX)
*t++ = *s;
}
} else {
if (t < tmppath + PATH_MAX)
*t++ = *s;
}
s++;
}
*t = '\0';
catd = load_msgcat(tmppath);
if (catd != (nl_catd)-1)
return catd;
if (*s)
s++;
t = tmppath;
} while (*s);
return (nl_catd)-1;
}
static nl_catd
load_msgcat(path)
const char *path;
{
struct stat st;
nl_catd catd;
void *data;
int fd;
_DIAGASSERT(path != NULL);
if ((fd = open(path, O_RDONLY)) == -1)
return (nl_catd)-1;
if (fstat(fd, &st) != 0) {
close (fd);
return (nl_catd)-1;
}
#ifdef __minix
data = mmap(0, (size_t)st.st_size, PROT_READ, MAP_ANON, -1, (off_t)0);
if (data == MAP_FAILED) {
return (nl_catd)-1;
}
if (read(fd, data, st.st_size) != st.st_size)
{
munmap(data, (size_t)st.st_size);
return (nl_catd)-1;
}
close (fd);
#else /* !__minix */
data = mmap(0, (size_t)st.st_size, PROT_READ, MAP_FILE|MAP_SHARED, fd,
(off_t)0);
close (fd);
if (data == MAP_FAILED) {
return (nl_catd)-1;
}
#endif /* __minix */
if (ntohl((u_int32_t)((struct _nls_cat_hdr *)data)->__magic) !=
_NLS_MAGIC) {
munmap(data, (size_t)st.st_size);
return (nl_catd)-1;
}
if ((catd = malloc(sizeof (*catd))) == NULL) {
munmap(data, (size_t)st.st_size);
return (nl_catd)-1;
}
catd->__data = data;
catd->__size = (int)st.st_size;
return catd;
}