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freebsd/lib/libkiconv/kiconv_sysctl.c
Xin LI c9f1e38a85 free(3) won't mess with errno so return it as-is.
Submitted by:	Jaakko Heinonen <jh saunalahti fi>
2009-06-22 21:49:55 +00:00

90 lines
2.6 KiB
C

/*-
* Copyright (c) 2005 Ryuichiro Imura
* 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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/iconv.h>
#include <sys/sysctl.h>
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
int
kiconv_lookupconv(const char *drvname)
{
size_t size;
if (sysctlbyname("kern.iconv.drvlist", NULL, &size, NULL, 0) == -1)
return (errno);
if (size > 0) {
char *drivers, *drvp;
drivers = malloc(size);
if (drivers == NULL)
return (ENOMEM);
if (sysctlbyname("kern.iconv.drvlist", drivers, &size, NULL, 0) == -1) {
free(drivers);
return (errno);
}
for (drvp = drivers; *drvp != '\0'; drvp += strlen(drvp) + 1)
if (strcmp(drvp, drvname) == 0) {
free(drivers);
return (0);
}
}
return (ENOENT);
}
int
kiconv_lookupcs(const char *tocode, const char *fromcode)
{
size_t i, size;
struct iconv_cspair_info *csi, *csip;
if (sysctlbyname("kern.iconv.cslist", NULL, &size, NULL, 0) == -1)
return (errno);
if (size > 0) {
csi = malloc(size);
if (csi == NULL)
return (ENOMEM);
if (sysctlbyname("kern.iconv.cslist", csi, &size, NULL, 0) == -1) {
free(csi);
return (errno);
}
for (i = 0, csip = csi; i < (size/sizeof(*csi)); i++, csip++){
if (strcmp(csip->cs_to, tocode) == 0 &&
strcmp(csip->cs_from, fromcode) == 0) {
free(csi);
return (0);
}
}
}
return (ENOENT);
}