/* Copyright (C) 2000-2006 MySQL AB This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* Functions to create a unireg form-file from a FIELD and a fieldname-fieldinfo struct. In the following functions FIELD * is an ordinary field-structure with the following exeptions: sc_length,typepos,row,kol,dtype,regnr and field need not to be set. str is a (long) to record position where 0 is the first position. */ #include "mysql_priv.h" #include #include #define FCOMP 17 /* Bytes for a packed field */ static uchar * pack_screens(List &create_fields, uint *info_length, uint *screens, bool small_file); static uint pack_keys(uchar *keybuff,uint key_count, KEY *key_info, ulong data_offset); static bool pack_header(uchar *forminfo,enum legacy_db_type table_type, List &create_fields, uint info_length, uint screens, uint table_options, ulong data_offset, handler *file); static uint get_interval_id(uint *,List &, Create_field *); static bool pack_fields(File file, List &create_fields, ulong data_offset); static bool make_empty_rec(THD *thd, int file, enum legacy_db_type table_type, uint table_options, List &create_fields, uint reclength, ulong data_offset, handler *handler); /** An interceptor to hijack ER_TOO_MANY_FIELDS error from pack_screens and retry again without UNIREG screens. XXX: what is a UNIREG screen? */ struct Pack_header_error_handler: public Internal_error_handler { virtual bool handle_error(uint sql_errno, const char *message, MYSQL_ERROR::enum_warning_level level, THD *thd); bool is_handled; Pack_header_error_handler() :is_handled(FALSE) {} }; bool Pack_header_error_handler:: handle_error(uint sql_errno, const char * /* message */, MYSQL_ERROR::enum_warning_level /* level */, THD * /* thd */) { is_handled= (sql_errno == ER_TOO_MANY_FIELDS); return is_handled; } /* Create a frm (table definition) file SYNOPSIS mysql_create_frm() thd Thread handler file_name Path for file (including database and .frm) db Name of database table Name of table create_info create info parameters create_fields Fields to create keys number of keys to create key_info Keys to create db_file Handler to use. May be zero, in which case we use create_info->db_type RETURN false ok true error */ bool mysql_create_frm(THD *thd, const char *file_name, const char *db, const char *table, HA_CREATE_INFO *create_info, List &create_fields, uint keys, KEY *key_info, handler *db_file) { LEX_STRING str_db_type; uint reclength, info_length, screens, key_info_length, maxlength, tmp_len, i; ulong key_buff_length; File file; ulong filepos, data_offset; uchar fileinfo[64],forminfo[288],*keybuff; uchar *screen_buff; char buff[128]; #ifdef WITH_PARTITION_STORAGE_ENGINE partition_info *part_info= thd->work_part_info; #endif Pack_header_error_handler pack_header_error_handler; int error; DBUG_ENTER("mysql_create_frm"); DBUG_ASSERT(*fn_rext((char*)file_name)); // Check .frm extension if (!(screen_buff=pack_screens(create_fields,&info_length,&screens,0))) DBUG_RETURN(1); DBUG_ASSERT(db_file != NULL); /* If fixed row records, we need one bit to check for deleted rows */ if (!(create_info->table_options & HA_OPTION_PACK_RECORD)) create_info->null_bits++; data_offset= (create_info->null_bits + 7) / 8; thd->push_internal_handler(&pack_header_error_handler); error= pack_header(forminfo, ha_legacy_type(create_info->db_type), create_fields,info_length, screens, create_info->table_options, data_offset, db_file); thd->pop_internal_handler(); if (error) { my_free(screen_buff, MYF(0)); if (! pack_header_error_handler.is_handled) DBUG_RETURN(1); // Try again without UNIREG screens (to get more columns) if (!(screen_buff=pack_screens(create_fields,&info_length,&screens,1))) DBUG_RETURN(1); if (pack_header(forminfo, ha_legacy_type(create_info->db_type), create_fields,info_length, screens, create_info->table_options, data_offset, db_file)) { my_free(screen_buff, MYF(0)); DBUG_RETURN(1); } } reclength=uint2korr(forminfo+266); /* Calculate extra data segment length */ str_db_type.str= (char *) ha_resolve_storage_engine_name(create_info->db_type); str_db_type.length= strlen(str_db_type.str); /* str_db_type */ create_info->extra_size= (2 + str_db_type.length + 2 + create_info->connect_string.length); /* Partition: Length of partition info = 4 byte Potential NULL byte at end of partition info string = 1 byte Indicator if auto-partitioned table = 1 byte => Total 6 byte */ create_info->extra_size+= 6; #ifdef WITH_PARTITION_STORAGE_ENGINE if (part_info) { create_info->extra_size+= part_info->part_info_len; } #endif for (i= 0; i < keys; i++) { if (key_info[i].parser_name) create_info->extra_size+= key_info[i].parser_name->length + 1; } if ((file=create_frm(thd, file_name, db, table, reclength, fileinfo, create_info, keys)) < 0) { my_free(screen_buff, MYF(0)); DBUG_RETURN(1); } key_buff_length= uint4korr(fileinfo+47); keybuff=(uchar*) my_malloc(key_buff_length, MYF(0)); key_info_length= pack_keys(keybuff, keys, key_info, data_offset); /* Ensure that there are no forms in this newly created form file. Even if the form file exists, create_frm must truncate it to ensure one form per form file. */ DBUG_ASSERT(uint2korr(fileinfo+8) == 0); if (!(filepos= make_new_entry(file, fileinfo, NULL, ""))) goto err; maxlength=(uint) next_io_size((ulong) (uint2korr(forminfo)+1000)); int2store(forminfo+2,maxlength); int4store(fileinfo+10,(ulong) (filepos+maxlength)); fileinfo[26]= (uchar) test((create_info->max_rows == 1) && (create_info->min_rows == 1) && (keys == 0)); int2store(fileinfo+28,key_info_length); /* This gives us the byte-position of the character at (character-position, not byte-position) TABLE_COMMENT_MAXLEN. The trick here is that character-positions start at 0, so the last character in a maximum-allowed length string would be at char-pos MAXLEN-1; charpos MAXLEN will be the position of the terminator. Consequently, bytepos(charpos(MAXLEN)) should be equal to comment[length] (which should also be the terminator, or at least the first byte after the payload in the strict sense). If this is not so (bytepos(charpos(MAXLEN)) comes /before/ the end of the string), the string is too long. For additional credit, realise that UTF-8 has 1-3 bytes before 6.0, and 1-4 bytes in 6.0 (6.0 also has UTF-32). This means that the inlined COMMENT supposedly does not exceed 60 character plus terminator, vulgo, 181 bytes. */ tmp_len= system_charset_info->cset->charpos(system_charset_info, create_info->comment.str, create_info->comment.str + create_info->comment.length, 60); if (tmp_len < create_info->comment.length) { if ((thd->variables.sql_mode & (MODE_STRICT_TRANS_TABLES | MODE_STRICT_ALL_TABLES))) { my_error(ER_TOO_LONG_TABLE_COMMENT, MYF(0), table, tmp_len); goto err; } push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_WARN, ER_TOO_LONG_TABLE_COMMENT, ER(ER_TOO_LONG_TABLE_COMMENT), table, tmp_len); create_info->comment.length= tmp_len; } strmake((char*) forminfo+47, create_info->comment.str ? create_info->comment.str : "", create_info->comment.length); forminfo[46]=(uchar) create_info->comment.length; #ifdef WITH_PARTITION_STORAGE_ENGINE if (part_info) { fileinfo[61]= (uchar) ha_legacy_type(part_info->default_engine_type); DBUG_PRINT("info", ("part_db_type = %d", fileinfo[61])); } #endif int2store(fileinfo+59,db_file->extra_rec_buf_length()); if (my_pwrite(file, fileinfo, 64, 0L, MYF_RW) || my_pwrite(file, keybuff, key_info_length, (ulong) uint2korr(fileinfo+6),MYF_RW)) goto err; VOID(my_seek(file, (ulong) uint2korr(fileinfo+6)+ (ulong) key_buff_length, MY_SEEK_SET,MYF(0))); if (make_empty_rec(thd,file,ha_legacy_type(create_info->db_type), create_info->table_options, create_fields,reclength, data_offset, db_file)) goto err; int2store(buff, create_info->connect_string.length); if (my_write(file, (const uchar*)buff, 2, MYF(MY_NABP)) || my_write(file, (const uchar*)create_info->connect_string.str, create_info->connect_string.length, MYF(MY_NABP))) goto err; int2store(buff, str_db_type.length); if (my_write(file, (const uchar*)buff, 2, MYF(MY_NABP)) || my_write(file, (const uchar*)str_db_type.str, str_db_type.length, MYF(MY_NABP))) goto err; #ifdef WITH_PARTITION_STORAGE_ENGINE if (part_info) { char auto_partitioned= part_info->is_auto_partitioned ? 1 : 0; int4store(buff, part_info->part_info_len); if (my_write(file, (const uchar*)buff, 4, MYF_RW) || my_write(file, (const uchar*)part_info->part_info_string, part_info->part_info_len + 1, MYF_RW) || my_write(file, (const uchar*)&auto_partitioned, 1, MYF_RW)) goto err; } else #endif { bzero((uchar*) buff, 6); if (my_write(file, (uchar*) buff, 6, MYF_RW)) goto err; } for (i= 0; i < keys; i++) { if (key_info[i].parser_name) { if (my_write(file, (const uchar*)key_info[i].parser_name->str, key_info[i].parser_name->length + 1, MYF(MY_NABP))) goto err; } } VOID(my_seek(file,filepos,MY_SEEK_SET,MYF(0))); if (my_write(file, forminfo, 288, MYF_RW) || my_write(file, screen_buff, info_length, MYF_RW) || pack_fields(file, create_fields, data_offset)) goto err; #ifdef HAVE_CRYPTED_FRM if (create_info->password) { char tmp=2,*disk_buff=0; SQL_CRYPT *crypted=new SQL_CRYPT(create_info->password); if (!crypted || my_pwrite(file,&tmp,1,26,MYF_RW)) // Mark crypted goto err; uint read_length=uint2korr(forminfo)-256; VOID(my_seek(file,filepos+256,MY_SEEK_SET,MYF(0))); if (read_string(file,(uchar**) &disk_buff,read_length)) goto err; crypted->encode(disk_buff,read_length); delete crypted; if (my_pwrite(file,disk_buff,read_length,filepos+256,MYF_RW)) { my_free(disk_buff,MYF(0)); goto err; } my_free(disk_buff,MYF(0)); } #endif my_free(screen_buff,MYF(0)); my_free(keybuff, MYF(0)); if (opt_sync_frm && !(create_info->options & HA_LEX_CREATE_TMP_TABLE) && (my_sync(file, MYF(MY_WME)) || my_sync_dir_by_file(file_name, MYF(MY_WME)))) goto err2; if (my_close(file,MYF(MY_WME))) goto err3; { /* Restore all UCS2 intervals. HEX representation of them is not needed anymore. */ List_iterator it(create_fields); Create_field *field; while ((field=it++)) { if (field->save_interval) { field->interval= field->save_interval; field->save_interval= 0; } } } DBUG_RETURN(0); err: my_free(screen_buff, MYF(0)); my_free(keybuff, MYF(0)); err2: VOID(my_close(file,MYF(MY_WME))); err3: my_delete(file_name,MYF(0)); DBUG_RETURN(1); } /* mysql_create_frm */ /* Create a frm (table definition) file and the tables SYNOPSIS rea_create_table() thd Thread handler path Name of file (including database, without .frm) db Data base name table_name Table name create_info create info parameters create_fields Fields to create keys number of keys to create key_info Keys to create file Handler to use RETURN 0 ok 1 error */ int rea_create_table(THD *thd, const char *path, const char *db, const char *table_name, HA_CREATE_INFO *create_info, List &create_fields, uint keys, KEY *key_info, handler *file) { DBUG_ENTER("rea_create_table"); char frm_name[FN_REFLEN]; strxmov(frm_name, path, reg_ext, NullS); if (mysql_create_frm(thd, frm_name, db, table_name, create_info, create_fields, keys, key_info, file)) DBUG_RETURN(1); // Make sure mysql_create_frm din't remove extension DBUG_ASSERT(*fn_rext(frm_name)); if (thd->variables.keep_files_on_create) create_info->options|= HA_CREATE_KEEP_FILES; if (!create_info->frm_only && (file->ha_create_handler_files(path, NULL, CHF_CREATE_FLAG, create_info) || ha_create_table(thd, path, db, table_name, create_info, 0))) goto err_handler; DBUG_RETURN(0); err_handler: VOID(file->ha_create_handler_files(path, NULL, CHF_DELETE_FLAG, create_info)); my_delete(frm_name, MYF(0)); DBUG_RETURN(1); } /* rea_create_table */ /* Pack screens to a screen for save in a form-file */ static uchar *pack_screens(List &create_fields, uint *info_length, uint *screens, bool small_file) { reg1 uint i; uint row,start_row,end_row,fields_on_screen; uint length,cols; uchar *info,*pos,*start_screen; uint fields=create_fields.elements; List_iterator it(create_fields); DBUG_ENTER("pack_screens"); start_row=4; end_row=22; cols=80; fields_on_screen=end_row+1-start_row; *screens=(fields-1)/fields_on_screen+1; length= (*screens) * (SC_INFO_LENGTH+ (cols>> 1)+4); Create_field *field; while ((field=it++)) length+=(uint) strlen(field->field_name)+1+TE_INFO_LENGTH+cols/2; if (!(info=(uchar*) my_malloc(length,MYF(MY_WME)))) DBUG_RETURN(0); start_screen=0; row=end_row; pos=info; it.rewind(); for (i=0 ; i < fields ; i++) { Create_field *cfield=it++; if (row++ == end_row) { if (i) { length=(uint) (pos-start_screen); int2store(start_screen,length); start_screen[2]=(uchar) (fields_on_screen+1); start_screen[3]=(uchar) (fields_on_screen); } row=start_row; start_screen=pos; pos+=4; pos[0]= (uchar) start_row-2; /* Header string */ pos[1]= (uchar) (cols >> 2); pos[2]= (uchar) (cols >> 1) +1; strfill((char *) pos+3,(uint) (cols >> 1),' '); pos+=(cols >> 1)+4; } length=(uint) strlen(cfield->field_name); if (length > cols-3) length=cols-3; if (!small_file) { pos[0]=(uchar) row; pos[1]=0; pos[2]=(uchar) (length+1); pos=(uchar*) strmake((char*) pos+3,cfield->field_name,length)+1; } cfield->row=(uint8) row; cfield->col=(uint8) (length+1); cfield->sc_length=(uint8) min(cfield->length,cols-(length+2)); } length=(uint) (pos-start_screen); int2store(start_screen,length); start_screen[2]=(uchar) (row-start_row+2); start_screen[3]=(uchar) (row-start_row+1); *info_length=(uint) (pos-info); DBUG_RETURN(info); } /* pack_screens */ /* Pack keyinfo and keynames to keybuff for save in form-file. */ static uint pack_keys(uchar *keybuff, uint key_count, KEY *keyinfo, ulong data_offset) { uint key_parts,length; uchar *pos, *keyname_pos; KEY *key,*end; KEY_PART_INFO *key_part,*key_part_end; DBUG_ENTER("pack_keys"); pos=keybuff+6; key_parts=0; for (key=keyinfo,end=keyinfo+key_count ; key != end ; key++) { int2store(pos, (key->flags ^ HA_NOSAME)); int2store(pos+2,key->key_length); pos[4]= (uchar) key->key_parts; pos[5]= (uchar) key->algorithm; int2store(pos+6, key->block_size); pos+=8; key_parts+=key->key_parts; DBUG_PRINT("loop", ("flags: %lu key_parts: %d at 0x%lx", key->flags, key->key_parts, (long) key->key_part)); for (key_part=key->key_part,key_part_end=key_part+key->key_parts ; key_part != key_part_end ; key_part++) { uint offset; DBUG_PRINT("loop",("field: %d startpos: %lu length: %d", key_part->fieldnr, key_part->offset + data_offset, key_part->length)); int2store(pos,key_part->fieldnr+1+FIELD_NAME_USED); offset= (uint) (key_part->offset+data_offset+1); int2store(pos+2, offset); pos[4]=0; // Sort order int2store(pos+5,key_part->key_type); int2store(pos+7,key_part->length); pos+=9; } } /* Save keynames */ keyname_pos=pos; *pos++=(uchar) NAMES_SEP_CHAR; for (key=keyinfo ; key != end ; key++) { uchar *tmp=(uchar*) strmov((char*) pos,key->name); *tmp++= (uchar) NAMES_SEP_CHAR; *tmp=0; pos=tmp; } *(pos++)=0; if (key_count > 127 || key_parts > 127) { keybuff[0]= (key_count & 0x7f) | 0x80; keybuff[1]= key_count >> 7; int2store(keybuff+2,key_parts); } else { keybuff[0]=(uchar) key_count; keybuff[1]=(uchar) key_parts; keybuff[2]= keybuff[3]= 0; } length=(uint) (pos-keyname_pos); int2store(keybuff+4,length); DBUG_RETURN((uint) (pos-keybuff)); } /* pack_keys */ /* Make formheader */ static bool pack_header(uchar *forminfo, enum legacy_db_type table_type, List &create_fields, uint info_length, uint screens, uint table_options, ulong data_offset, handler *file) { uint length,int_count,int_length,no_empty, int_parts; uint time_stamp_pos,null_fields; ulong reclength, totlength, n_length, com_length; DBUG_ENTER("pack_header"); if (create_fields.elements > MAX_FIELDS) { my_message(ER_TOO_MANY_FIELDS, ER(ER_TOO_MANY_FIELDS), MYF(0)); DBUG_RETURN(1); } totlength= 0L; reclength= data_offset; no_empty=int_count=int_parts=int_length=time_stamp_pos=null_fields= com_length=0; n_length=2L; /* Check fields */ List_iterator it(create_fields); Create_field *field; while ((field=it++)) { uint tmp_len= system_charset_info->cset->charpos(system_charset_info, field->comment.str, field->comment.str + field->comment.length, 255); if (tmp_len < field->comment.length) { if ((current_thd->variables.sql_mode & (MODE_STRICT_TRANS_TABLES | MODE_STRICT_ALL_TABLES))) { my_error(ER_TOO_LONG_FIELD_COMMENT, MYF(0), field->field_name, tmp_len); DBUG_RETURN(1); } push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_WARN, ER_TOO_LONG_FIELD_COMMENT, ER(ER_TOO_LONG_FIELD_COMMENT), field->field_name, tmp_len); field->comment.length= tmp_len; } totlength+= field->length; com_length+= field->comment.length; if (MTYP_TYPENR(field->unireg_check) == Field::NOEMPTY || field->unireg_check & MTYP_NOEMPTY_BIT) { field->unireg_check= (Field::utype) ((uint) field->unireg_check | MTYP_NOEMPTY_BIT); no_empty++; } /* We mark first TIMESTAMP field with NOW() in DEFAULT or ON UPDATE as auto-update field. */ if (field->sql_type == MYSQL_TYPE_TIMESTAMP && MTYP_TYPENR(field->unireg_check) != Field::NONE && !time_stamp_pos) time_stamp_pos= (uint) field->offset+ (uint) data_offset + 1; length=field->pack_length; /* Ensure we don't have any bugs when generating offsets */ DBUG_ASSERT(reclength == field->offset + data_offset); if ((uint) field->offset+ (uint) data_offset+ length > reclength) reclength=(uint) (field->offset+ data_offset + length); n_length+= (ulong) strlen(field->field_name)+1; field->interval_id=0; field->save_interval= 0; if (field->interval) { uint old_int_count=int_count; if (field->charset->mbminlen > 1) { /* Escape UCS2 intervals using HEX notation to avoid problems with delimiters between enum elements. As the original representation is still needed in the function make_empty_rec to create a record of filled with default values it is saved in save_interval The HEX representation is created from this copy. */ field->save_interval= field->interval; field->interval= (TYPELIB*) sql_alloc(sizeof(TYPELIB)); *field->interval= *field->save_interval; field->interval->type_names= (const char **) sql_alloc(sizeof(char*) * (field->interval->count+1)); field->interval->type_names[field->interval->count]= 0; field->interval->type_lengths= (uint *) sql_alloc(sizeof(uint) * field->interval->count); for (uint pos= 0; pos < field->interval->count; pos++) { char *dst; const char *src= field->save_interval->type_names[pos]; uint hex_length; length= field->save_interval->type_lengths[pos]; hex_length= length * 2; field->interval->type_lengths[pos]= hex_length; field->interval->type_names[pos]= dst= (char*) sql_alloc(hex_length + 1); octet2hex(dst, src, length); } } field->interval_id=get_interval_id(&int_count,create_fields,field); if (old_int_count != int_count) { for (const char **pos=field->interval->type_names ; *pos ; pos++) int_length+=(uint) strlen(*pos)+1; // field + suffix prefix int_parts+=field->interval->count+1; } } if (f_maybe_null(field->pack_flag)) null_fields++; } int_length+=int_count*2; // 255 prefix + 0 suffix /* Save values in forminfo */ if (reclength > (ulong) file->max_record_length()) { my_error(ER_TOO_BIG_ROWSIZE, MYF(0), (uint) file->max_record_length()); DBUG_RETURN(1); } /* Hack to avoid bugs with small static rows in MySQL */ reclength=max(file->min_record_length(table_options),reclength); if (info_length+(ulong) create_fields.elements*FCOMP+288+ n_length+int_length+com_length > 65535L || int_count > 255) { my_message(ER_TOO_MANY_FIELDS, ER(ER_TOO_MANY_FIELDS), MYF(0)); DBUG_RETURN(1); } bzero((char*)forminfo,288); length=(info_length+create_fields.elements*FCOMP+288+n_length+int_length+ com_length); int2store(forminfo,length); forminfo[256] = (uint8) screens; int2store(forminfo+258,create_fields.elements); int2store(forminfo+260,info_length); int2store(forminfo+262,totlength); int2store(forminfo+264,no_empty); int2store(forminfo+266,reclength); int2store(forminfo+268,n_length); int2store(forminfo+270,int_count); int2store(forminfo+272,int_parts); int2store(forminfo+274,int_length); int2store(forminfo+276,time_stamp_pos); int2store(forminfo+278,80); /* Columns needed */ int2store(forminfo+280,22); /* Rows needed */ int2store(forminfo+282,null_fields); int2store(forminfo+284,com_length); /* Up to forminfo+288 is free to use for additional information */ DBUG_RETURN(0); } /* pack_header */ /* get each unique interval each own id */ static uint get_interval_id(uint *int_count,List &create_fields, Create_field *last_field) { List_iterator it(create_fields); Create_field *field; TYPELIB *interval=last_field->interval; while ((field=it++) != last_field) { if (field->interval_id && field->interval->count == interval->count) { const char **a,**b; for (a=field->interval->type_names, b=interval->type_names ; *a && !strcmp(*a,*b); a++,b++) ; if (! *a) { return field->interval_id; // Re-use last interval } } } return ++*int_count; // New unique interval } /* Save fields, fieldnames and intervals */ static bool pack_fields(File file, List &create_fields, ulong data_offset) { reg2 uint i; uint int_count, comment_length=0; uchar buff[MAX_FIELD_WIDTH]; Create_field *field; DBUG_ENTER("pack_fields"); /* Write field info */ List_iterator it(create_fields); int_count=0; while ((field=it++)) { uint recpos; buff[0]= (uchar) field->row; buff[1]= (uchar) field->col; buff[2]= (uchar) field->sc_length; int2store(buff+3, field->length); /* The +1 is here becasue the col offset in .frm file have offset 1 */ recpos= field->offset+1 + (uint) data_offset; int3store(buff+5,recpos); int2store(buff+8,field->pack_flag); int2store(buff+10,field->unireg_check); buff[12]= (uchar) field->interval_id; buff[13]= (uchar) field->sql_type; if (field->sql_type == MYSQL_TYPE_GEOMETRY) { buff[14]= (uchar) field->geom_type; #ifndef HAVE_SPATIAL DBUG_ASSERT(0); // Should newer happen #endif } else if (field->charset) buff[14]= (uchar) field->charset->number; else buff[14]= 0; // Numerical int2store(buff+15, field->comment.length); comment_length+= field->comment.length; set_if_bigger(int_count,field->interval_id); if (my_write(file, buff, FCOMP, MYF_RW)) DBUG_RETURN(1); } /* Write fieldnames */ buff[0]=(uchar) NAMES_SEP_CHAR; if (my_write(file, buff, 1, MYF_RW)) DBUG_RETURN(1); i=0; it.rewind(); while ((field=it++)) { char *pos= strmov((char*) buff,field->field_name); *pos++=NAMES_SEP_CHAR; if (i == create_fields.elements-1) *pos++=0; if (my_write(file, buff, (size_t) (pos-(char*) buff),MYF_RW)) DBUG_RETURN(1); i++; } /* Write intervals */ if (int_count) { String tmp((char*) buff,sizeof(buff), &my_charset_bin); tmp.length(0); it.rewind(); int_count=0; while ((field=it++)) { if (field->interval_id > int_count) { unsigned char sep= 0; unsigned char occ[256]; uint i; unsigned char *val= NULL; bzero(occ, sizeof(occ)); for (i=0; (val= (unsigned char*) field->interval->type_names[i]); i++) for (uint j = 0; j < field->interval->type_lengths[i]; j++) occ[(unsigned int) (val[j])]= 1; if (!occ[(unsigned char)NAMES_SEP_CHAR]) sep= (unsigned char) NAMES_SEP_CHAR; else if (!occ[(unsigned int)',']) sep= ','; else { for (uint i=1; i<256; i++) { if(!occ[i]) { sep= i; break; } } if(!sep) /* disaster, enum uses all characters, none left as separator */ { my_message(ER_WRONG_FIELD_TERMINATORS,ER(ER_WRONG_FIELD_TERMINATORS), MYF(0)); DBUG_RETURN(1); } } int_count= field->interval_id; tmp.append(sep); for (const char **pos=field->interval->type_names ; *pos ; pos++) { tmp.append(*pos); tmp.append(sep); } tmp.append('\0'); // End of intervall } } if (my_write(file,(uchar*) tmp.ptr(),tmp.length(),MYF_RW)) DBUG_RETURN(1); } if (comment_length) { it.rewind(); int_count=0; while ((field=it++)) { if (field->comment.length) if (my_write(file, (uchar*) field->comment.str, field->comment.length, MYF_RW)) DBUG_RETURN(1); } } DBUG_RETURN(0); } /* save an empty record on start of formfile */ static bool make_empty_rec(THD *thd, File file,enum legacy_db_type table_type, uint table_options, List &create_fields, uint reclength, ulong data_offset, handler *handler) { int error= 0; Field::utype type; uint null_count; uchar *buff,*null_pos; TABLE table; TABLE_SHARE share; Create_field *field; enum_check_fields old_count_cuted_fields= thd->count_cuted_fields; DBUG_ENTER("make_empty_rec"); /* We need a table to generate columns for default values */ bzero((char*) &table, sizeof(table)); bzero((char*) &share, sizeof(share)); table.s= &share; if (!(buff=(uchar*) my_malloc((size_t) reclength,MYF(MY_WME | MY_ZEROFILL)))) { DBUG_RETURN(1); } table.in_use= thd; table.s->db_low_byte_first= handler->low_byte_first(); table.s->blob_ptr_size= portable_sizeof_char_ptr; null_count=0; if (!(table_options & HA_OPTION_PACK_RECORD)) { null_count++; // Need one bit for delete mark *buff|= 1; } null_pos= buff; List_iterator it(create_fields); thd->count_cuted_fields= CHECK_FIELD_WARN; // To find wrong default values while ((field=it++)) { /* regfield don't have to be deleted as it's allocated with sql_alloc() */ Field *regfield= make_field(&share, buff+field->offset + data_offset, field->length, null_pos + null_count / 8, null_count & 7, field->pack_flag, field->sql_type, field->charset, field->geom_type, field->unireg_check, field->save_interval ? field->save_interval : field->interval, field->field_name); if (!regfield) { error= 1; goto err; // End of memory } /* save_in_field() will access regfield->table->in_use */ regfield->init(&table); if (!(field->flags & NOT_NULL_FLAG)) { *regfield->null_ptr|= regfield->null_bit; null_count++; } if (field->sql_type == MYSQL_TYPE_BIT && !f_bit_as_char(field->pack_flag)) null_count+= field->length & 7; type= (Field::utype) MTYP_TYPENR(field->unireg_check); if (field->def) { int res= field->def->save_in_field(regfield, 1); /* If not ok or warning of level 'note' */ if (res != 0 && res != 3) { my_error(ER_INVALID_DEFAULT, MYF(0), regfield->field_name); error= 1; delete regfield; //To avoid memory leak goto err; } } else if (regfield->real_type() == MYSQL_TYPE_ENUM && (field->flags & NOT_NULL_FLAG)) { regfield->set_notnull(); regfield->store((longlong) 1, TRUE); } else if (type == Field::YES) // Old unireg type regfield->store(ER(ER_YES),(uint) strlen(ER(ER_YES)),system_charset_info); else if (type == Field::NO) // Old unireg type regfield->store(ER(ER_NO), (uint) strlen(ER(ER_NO)),system_charset_info); else regfield->reset(); } DBUG_ASSERT(data_offset == ((null_count + 7) / 8)); /* We need to set the unused bits to 1. If the number of bits is a multiple of 8 there are no unused bits. */ if (null_count & 7) *(null_pos + null_count / 8)|= ~(((uchar) 1 << (null_count & 7)) - 1); error= my_write(file, buff, (size_t) reclength,MYF_RW) != 0; err: my_free(buff, MYF(MY_FAE)); thd->count_cuted_fields= old_count_cuted_fields; DBUG_RETURN(error); } /* make_empty_rec */