The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/sys/iconv.h

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    1 /*-
    2  * Copyright (c) 2000-2001, Boris Popov
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *    This product includes software developed by Boris Popov.
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  * $FreeBSD: releng/5.4/sys/sys/iconv.h 145335 2005-04-20 19:11:07Z cvs2svn $
   33  */
   34 #ifndef _SYS_ICONV_H_
   35 #define _SYS_ICONV_H_
   36 
   37 #define ICONV_CSNMAXLEN         31      /* maximum length of charset name */
   38 #define ICONV_CNVNMAXLEN        31      /* maximum length of converter name */
   39 #define ICONV_CSMAXDATALEN      (2048+262144)   /* maximum size of data associated with cs pair */
   40 
   41 #define XLAT16_ACCEPT_NULL_OUT          0x01000000
   42 #define XLAT16_ACCEPT_NULL_IN           0x02000000
   43 #define XLAT16_HAS_LOWER_CASE           0x04000000
   44 #define XLAT16_HAS_UPPER_CASE           0x08000000
   45 #define XLAT16_HAS_FROM_LOWER_CASE      0x10000000
   46 #define XLAT16_HAS_FROM_UPPER_CASE      0x20000000
   47 #define XLAT16_IS_3BYTE_CHR             0x40000000
   48 
   49 #define KICONV_LOWER            1       /* tolower converted character */
   50 #define KICONV_UPPER            2       /* toupper converted character */
   51 #define KICONV_FROM_LOWER       4       /* tolower source character, then convert */
   52 #define KICONV_FROM_UPPER       8       /* toupper source character, then convert */
   53 
   54 /*
   55  * Entry for cslist sysctl
   56  */
   57 #define ICONV_CSPAIR_INFO_VER   1
   58 
   59 struct iconv_cspair_info {
   60         int     cs_version;
   61         int     cs_id;
   62         int     cs_base;
   63         int     cs_refcount;
   64         char    cs_to[ICONV_CSNMAXLEN];
   65         char    cs_from[ICONV_CSNMAXLEN];
   66 };
   67 
   68 /*
   69  * Paramters for 'add' sysctl
   70  */
   71 #define ICONV_ADD_VER   1
   72 
   73 struct iconv_add_in {
   74         int     ia_version;
   75         char    ia_converter[ICONV_CNVNMAXLEN];
   76         char    ia_to[ICONV_CSNMAXLEN];
   77         char    ia_from[ICONV_CSNMAXLEN];
   78         int     ia_datalen;
   79         const void *ia_data;
   80 };
   81 
   82 struct iconv_add_out {
   83         int     ia_csid;
   84 };
   85 
   86 #ifndef _KERNEL
   87 
   88 __BEGIN_DECLS
   89 
   90 #define ENCODING_UNICODE        "ISO-10646-UCS-2"
   91 #define KICONV_VENDOR_MICSFT    1       /* Microsoft Vendor Code for quirk */
   92 
   93 int   kiconv_add_xlat_table(const char *, const char *, const u_char *);
   94 int   kiconv_add_xlat16_cspair(const char *, const char *, int);
   95 int   kiconv_add_xlat16_cspairs(const char *, const char *);
   96 int   kiconv_add_xlat16_table(const char *, const char *, const void *, int);
   97 const char *kiconv_quirkcs(const char *, int);
   98 
   99 __END_DECLS
  100 
  101 #else /* !_KERNEL */
  102 
  103 #include <sys/kobj.h>
  104 #include <sys/module.h>                 /* can't avoid that */
  105 #include <sys/queue.h>                  /* can't avoid that */
  106 #include <sys/sysctl.h>                 /* can't avoid that */
  107 
  108 struct iconv_cspair;
  109 struct iconv_cspairdata;
  110 
  111 /*
  112  * iconv converter class definition
  113  */
  114 struct iconv_converter_class {
  115         KOBJ_CLASS_FIELDS;
  116         TAILQ_ENTRY(iconv_converter_class)      cc_link;
  117 };
  118 
  119 struct iconv_cspair {
  120         int             cp_id;          /* unique id of charset pair */
  121         int             cp_refcount;    /* number of references from other pairs */
  122         const char *    cp_from;
  123         const char *    cp_to;
  124         void *          cp_data;
  125         struct iconv_converter_class * cp_dcp;
  126         struct iconv_cspair *cp_base;
  127         TAILQ_ENTRY(iconv_cspair)       cp_link;
  128 };
  129 
  130 #define KICONV_CONVERTER(name,size)                             \
  131     static DEFINE_CLASS(iconv_ ## name, iconv_ ## name ## _methods, (size)); \
  132     static moduledata_t iconv_ ## name ## _mod = {      \
  133         "iconv_"#name, iconv_converter_handler,         \
  134         (void*)&iconv_ ## name ## _class                \
  135     };                                                  \
  136     DECLARE_MODULE(iconv_ ## name, iconv_ ## name ## _mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
  137 
  138 #define KICONV_CES(name,size)                           \
  139     static DEFINE_CLASS(iconv_ces_ ## name, iconv_ces_ ## name ## _methods, (size)); \
  140     static moduledata_t iconv_ces_ ## name ## _mod = {  \
  141         "iconv_ces_"#name, iconv_cesmod_handler,        \
  142         (void*)&iconv_ces_ ## name ## _class            \
  143     };                                                  \
  144     DECLARE_MODULE(iconv_ces_ ## name, iconv_ces_ ## name ## _mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
  145 
  146 #ifdef MALLOC_DECLARE
  147 MALLOC_DECLARE(M_ICONV);
  148 #endif
  149 
  150 /*
  151  * Basic conversion functions
  152  */
  153 int iconv_open(const char *to, const char *from, void **handle);
  154 int iconv_close(void *handle);
  155 int iconv_conv(void *handle, const char **inbuf,
  156         size_t *inbytesleft, char **outbuf, size_t *outbytesleft);
  157 int iconv_conv_case(void *handle, const char **inbuf,
  158         size_t *inbytesleft, char **outbuf, size_t *outbytesleft, int casetype);
  159 int iconv_convchr(void *handle, const char **inbuf,
  160         size_t *inbytesleft, char **outbuf, size_t *outbytesleft);
  161 int iconv_convchr_case(void *handle, const char **inbuf,
  162         size_t *inbytesleft, char **outbuf, size_t *outbytesleft, int casetype);
  163 char* iconv_convstr(void *handle, char *dst, const char *src);
  164 void* iconv_convmem(void *handle, void *dst, const void *src, int size);
  165 int iconv_vfs_refcount(const char *fsname);
  166 
  167 /*
  168  * Bridge struct of iconv functions
  169  */
  170 struct iconv_functions {
  171         int (*open)(const char *to, const char *from, void **handle);
  172         int (*close)(void *handle);
  173         int (*conv)(void *handle, const char **inbuf, size_t *inbytesleft,
  174                 char **outbuf, size_t *outbytesleft);
  175         int (*conv_case)(void *handle, const char **inbuf, size_t *inbytesleft,
  176                 char **outbuf, size_t *outbytesleft, int casetype);
  177         int (*convchr)(void *handle, const char **inbuf, size_t *inbytesleft,
  178                 char **outbuf, size_t *outbytesleft);
  179         int (*convchr_case)(void *handle, const char **inbuf, size_t *inbytesleft,
  180                 char **outbuf, size_t *outbytesleft, int casetype);
  181 };
  182 
  183 #define VFS_DECLARE_ICONV(fsname)                                       \
  184         static struct iconv_functions fsname ## _iconv_core = {         \
  185                 iconv_open,                                             \
  186                 iconv_close,                                            \
  187                 iconv_conv,                                             \
  188                 iconv_conv_case,                                        \
  189                 iconv_convchr,                                          \
  190                 iconv_convchr_case                                      \
  191         };                                                              \
  192         extern struct iconv_functions *fsname ## _iconv;                \
  193         static int fsname ## _iconv_mod_handler(module_t mod,           \
  194                 int type, void *d);                                     \
  195         static int                                                      \
  196         fsname ## _iconv_mod_handler(module_t mod, int type, void *d)   \
  197         {                                                               \
  198                 int error = 0;                                          \
  199                 switch(type) {                                          \
  200                 case MOD_LOAD:                                          \
  201                         fsname ## _iconv = & fsname ## _iconv_core;     \
  202                         break;                                          \
  203                 case MOD_UNLOAD:                                        \
  204                         error = iconv_vfs_refcount(#fsname);            \
  205                         if (error)                                      \
  206                                 return (EBUSY);                         \
  207                         fsname ## _iconv = NULL;                        \
  208                         break;                                          \
  209                 default:                                                \
  210                         error = EINVAL;                                 \
  211                         break;                                          \
  212                 }                                                       \
  213                 return (error);                                         \
  214         }                                                               \
  215         static moduledata_t fsname ## _iconv_mod = {                    \
  216                 #fsname"_iconv",                                        \
  217                 fsname ## _iconv_mod_handler,                           \
  218                 NULL                                                    \
  219         };                                                              \
  220         DECLARE_MODULE(fsname ## _iconv, fsname ## _iconv_mod,          \
  221                        SI_SUB_DRIVERS, SI_ORDER_ANY);                   \
  222         MODULE_DEPEND(fsname ## _iconv, fsname, 1, 1, 1);               \
  223         MODULE_DEPEND(fsname ## _iconv, libiconv, 2, 2, 2);             \
  224         MODULE_VERSION(fsname ## _iconv, 1)
  225 
  226 /*
  227  * Internal functions
  228  */
  229 int iconv_lookupcp(char **cpp, const char *s);
  230 
  231 int iconv_converter_initstub(struct iconv_converter_class *dp);
  232 int iconv_converter_donestub(struct iconv_converter_class *dp);
  233 int iconv_converter_handler(module_t mod, int type, void *data);
  234 
  235 #ifdef ICONV_DEBUG
  236 #define ICDEBUG(format, ...) printf("%s: "format, __func__ , __VA_ARGS__)
  237 #else
  238 #define ICDEBUG(format, ...)
  239 #endif
  240 
  241 #endif /* !_KERNEL */
  242 
  243 #endif /* !_SYS_ICONV_H_ */

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