1 files changed, 246 insertions, 0 deletions
diff --git a/usr/src/lib/libc/port/locale/setrunelocale.c b/usr/src/lib/libc/port/locale/setrunelocale.c
new file mode 100644
index 0000000000..db5fda6dd6
--- /dev/null
+++ b/usr/src/lib/libc/port/locale/setrunelocale.c
@@ -0,0 +1,246 @@
+/*
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * 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.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+/*
+ * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include "lint.h"
+#include "file64.h"
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <wchar.h>
+#include "runetype.h"
+#include "ldpart.h"
+#include "mblocal.h"
+#include "setlocale.h"
+#include "_ctype.h"
+
+extern _RuneLocale	*_Read_RuneMagi(FILE *);
+
+static int		__setrunelocale(const char *);
+
+static int
+__setrunelocale(const char *encoding)
+{
+	FILE *fp;
+	char name[PATH_MAX];
+	_RuneLocale *rl;
+	int saverr, ret;
+	size_t (*old__mbrtowc)(wchar_t *_RESTRICT_KYWD,
+	    const char *_RESTRICT_KYWD, size_t, mbstate_t *_RESTRICT_KYWD);
+	size_t (*old__wcrtomb)(char *_RESTRICT_KYWD, wchar_t,
+	    mbstate_t *_RESTRICT_KYWD);
+	int (*old__mbsinit)(const mbstate_t *);
+	size_t (*old__mbsnrtowcs)(wchar_t *_RESTRICT_KYWD,
+	    const char **_RESTRICT_KYWD, size_t, size_t,
+	    mbstate_t *_RESTRICT_KYWD);
+	size_t (*old__wcsnrtombs)(char *_RESTRICT_KYWD,
+	    const wchar_t **_RESTRICT_KYWD, size_t, size_t,
+	    mbstate_t *_RESTRICT_KYWD);
+	static char ctype_encoding[ENCODING_LEN + 1];
+	static _RuneLocale *CachedRuneLocale;
+	static size_t (*Cached__mbrtowc)(wchar_t *_RESTRICT_KYWD,
+	    const char *_RESTRICT_KYWD, size_t, mbstate_t *_RESTRICT_KYWD);
+	static size_t (*Cached__wcrtomb)(char *_RESTRICT_KYWD, wchar_t,
+	    mbstate_t *_RESTRICT_KYWD);
+	static int (*Cached__mbsinit)(const mbstate_t *);
+	static size_t (*Cached__mbsnrtowcs)(wchar_t *_RESTRICT_KYWD,
+	    const char **_RESTRICT_KYWD, size_t, size_t,
+	    mbstate_t *_RESTRICT_KYWD);
+	static size_t (*Cached__wcsnrtombs)(char *_RESTRICT_KYWD,
+	    const wchar_t **_RESTRICT_KYWD, size_t, size_t,
+	    mbstate_t *_RESTRICT_KYWD);
+
+	/*
+	 * The "C" and "POSIX" locale are always here.
+	 */
+	if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) {
+		(void) _none_init(&_DefaultRuneLocale);
+		return (0);
+	}
+
+	/*
+	 * If the locale name is the same as our cache, use the cache.
+	 */
+	if (CachedRuneLocale != NULL &&
+	    strcmp(encoding, ctype_encoding) == 0) {
+		_CurrentRuneLocale = CachedRuneLocale;
+		__mbrtowc = Cached__mbrtowc;
+		__mbsinit = Cached__mbsinit;
+		__mbsnrtowcs = Cached__mbsnrtowcs;
+		__wcrtomb = Cached__wcrtomb;
+		__wcsnrtombs = Cached__wcsnrtombs;
+		return (0);
+	}
+
+	/*
+	 * Slurp the locale file into the cache.
+	 */
+
+	/* Range checking not needed, encoding length already checked before */
+	(void) strcpy(name, _PathLocale);
+	(void) strcat(name, "/");
+	(void) strcat(name, encoding);
+	(void) strcat(name, "/LC_CTYPE");
+
+	if ((fp = fopen(name, "r")) == NULL)
+		return (errno == 0 ? ENOENT : errno);
+
+	if ((rl = _Read_RuneMagi(fp)) == NULL) {
+		saverr = (errno == 0 ? EINVAL : errno);
+		(void) fclose(fp);
+		return (saverr);
+	}
+	(void) fclose(fp);
+
+	old__mbrtowc = __mbrtowc;
+	old__mbsinit = __mbsinit;
+	old__mbsnrtowcs = __mbsnrtowcs;
+	old__wcrtomb = __wcrtomb;
+	old__wcsnrtombs = __wcsnrtombs;
+
+	__mbrtowc = NULL;
+	__mbsinit = NULL;
+	__mbsnrtowcs = __mbsnrtowcs_std;
+	__wcrtomb = NULL;
+	__wcsnrtombs = __wcsnrtombs_std;
+
+	if (strcmp(rl->__encoding, "NONE") == 0)
+		ret = _none_init(rl);
+	else if (strcmp(rl->__encoding, "ASCII") == 0)
+		ret = _ascii_init(rl);
+	else if (strcmp(rl->__encoding, "UTF-8") == 0)
+		ret = _UTF8_init(rl);
+	else if (strcmp(rl->__encoding, "EUC") == 0)
+		ret = _EUC_init(rl);
+	else if (strcmp(rl->__encoding, "GB18030") == 0)
+		ret = _GB18030_init(rl);
+	else if (strcmp(rl->__encoding, "GB2312") == 0)
+		ret = _GB2312_init(rl);
+	else if (strcmp(rl->__encoding, "GBK") == 0)
+		ret = _GBK_init(rl);
+	else if (strcmp(rl->__encoding, "BIG5") == 0)
+		ret = _BIG5_init(rl);
+	else if (strcmp(rl->__encoding, "MSKanji") == 0)
+		ret = _MSKanji_init(rl);
+	else
+		ret = EINVAL;
+
+	if (ret == 0) {
+		if (CachedRuneLocale != NULL) {
+			/* See euc.c */
+			if (strcmp(CachedRuneLocale->__encoding, "EUC") == 0)
+				free(CachedRuneLocale->__variable);
+			free(CachedRuneLocale);
+		}
+		CachedRuneLocale = _CurrentRuneLocale;
+		Cached__mbrtowc = __mbrtowc;
+		Cached__mbsinit = __mbsinit;
+		Cached__mbsnrtowcs = __mbsnrtowcs;
+		Cached__wcrtomb = __wcrtomb;
+		Cached__wcsnrtombs = __wcsnrtombs;
+		(void) strcpy(ctype_encoding, encoding);
+
+		/*
+		 * We need to overwrite the _ctype array.  This requires
+		 * some finagling.  This is because references to it may
+		 * have been baked into applications.
+		 *
+		 * Note that it is interesting that toupper/tolower only
+		 * produce defined results when the input is representable
+		 * as a byte.
+		 */
+
+		/*
+		 * The top half is the type mask array.  Because we
+		 * want to support both legacy Solaris code (which have
+		 * mask valeus baked in to them), and we want to be able
+		 * to import locale files from other sources (FreeBSD)
+		 * which probably uses different masks, we have to perform
+		 * a conversion here.  Ugh.  Note that the _CTYPE definitions
+		 * we use from FreeBSD are richer than the Solaris legacy.
+		 *
+		 * We have to cope with these limitations though, because the
+		 * inadequate Solaris definitions were baked into binaries.
+		 */
+		for (int i = 0; i < _CACHED_RUNES; i++) {
+			/* ctype can only encode the lower 8 bits. */
+			__ctype[i+1] = rl->__runetype[i] & 0xff;
+			__ctype_mask[i] = rl->__runetype[i];
+		}
+
+		/* The bottom half is the toupper/lower array */
+		for (int i = 0; i < _CACHED_RUNES; i++) {
+			__ctype[258 + i] = i;
+			if (rl->__mapupper[i] && rl->__mapupper[i] != i)
+				__ctype[258+i] = rl->__mapupper[i];
+			if (rl->__maplower[i] && rl->__maplower[i] != i)
+				__ctype[258+i] = rl->__maplower[i];
+
+			/* Don't forget these annoyances either! */
+			__trans_upper[i] = rl->__mapupper[i];
+			__trans_lower[i] = rl->__maplower[i];
+		}
+
+		/*
+		 * Note that we expect the init code will have populated
+		 * the CSWIDTH array (__ctype[514-520]) properly.
+		 */
+	} else {
+		__mbrtowc = old__mbrtowc;
+		__mbsinit = old__mbsinit;
+		__mbsnrtowcs = old__mbsnrtowcs;
+		__wcrtomb = old__wcrtomb;
+		__wcsnrtombs = old__wcsnrtombs;
+		free(rl);
+	}
+
+	return (ret);
+}
+
+int
+__wrap_setrunelocale(const char *locale)
+{
+	int ret = __setrunelocale(locale);
+
+	if (ret != 0) {
+		errno = ret;
+		return (_LDP_ERROR);
+	}
+	return (_LDP_LOADED);
+}