diff options
Diffstat (limited to 'merge/mrg_open.c')
| -rw-r--r-- | merge/mrg_open.c | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/merge/mrg_open.c b/merge/mrg_open.c deleted file mode 100644 index 6bf75392131..00000000000 --- a/merge/mrg_open.c +++ /dev/null @@ -1,150 +0,0 @@ -/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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; either version 2 of the License, or - (at your option) any later version. - - 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 */ - -/* open a MERGE-database */ - -#include "mrg_def.h" -#include <stddef.h> -#include <errno.h> -#ifdef VMS -#include "static.c" -#endif - -/* open a MERGE-database. - - if handle_locking is 0 then exit with error if some database is locked - if handle_locking is 1 then wait if database is locked -*/ - - -MRG_INFO *mrg_open( -const char *name, -int mode, -int handle_locking) -{ - int save_errno,i,errpos; - uint files,dir_length,length, options; - ulonglong file_offset; - char name_buff[FN_REFLEN*2],buff[FN_REFLEN],*end; - MRG_INFO info,*m_info; - File fd; - IO_CACHE file; - N_INFO *isam,*last_isam; - DBUG_ENTER("mrg_open"); - - LINT_INIT(last_isam); - isam=0; - errpos=files=0; - bzero((gptr) &info,sizeof(info)); - bzero((char*) &file,sizeof(file)); - if ((fd=my_open(fn_format(name_buff,name,"",MRG_NAME_EXT,4), - O_RDONLY | O_SHARE,MYF(0))) < 0 || - init_io_cache(&file, fd, IO_SIZE, READ_CACHE, 0, 0, - MYF(MY_WME | MY_NABP))) - goto err; - errpos=1; - dir_length=dirname_part(name_buff,name); - info.reclength=0; - while ((length=my_b_gets(&file,buff,FN_REFLEN-1))) - { - if ((end=buff+length)[-1] == '\n') - end[-1]='\0'; - if (buff[0] && buff[0] != '#') /* Skip empty lines and comments */ - { - last_isam=isam; - if (!test_if_hard_path(buff)) - { - VOID(strmake(name_buff+dir_length,buff, - sizeof(name_buff)-1-dir_length)); - VOID(cleanup_dirname(buff,name_buff)); - } - if (!(isam=nisam_open(buff,mode,test(handle_locking)))) - goto err; - files++; - } - last_isam=isam; - if (info.reclength && info.reclength != isam->s->base.reclength) - { - my_errno=HA_ERR_WRONG_IN_RECORD; - goto err; - } - info.reclength=isam->s->base.reclength; - } - if (!(m_info= (MRG_INFO*) my_malloc(sizeof(MRG_INFO)+files*sizeof(MRG_TABLE), - MYF(MY_WME)))) - goto err; - *m_info=info; - m_info->open_tables=(MRG_TABLE *) (m_info+1); - m_info->tables=files; - - options= (uint) ~0; - for (i=files ; i-- > 0 ; ) - { - m_info->open_tables[i].table=isam; - m_info->options|=isam->s->base.options; - options&=isam->s->base.options; - m_info->records+=isam->s->state.records; - m_info->del+=isam->s->state.del; - m_info->data_file_length=isam->s->state.data_file_length; - if (i) - isam=(N_INFO*) (isam->open_list.next->data); - } - /* Don't force readonly if not all tables are readonly */ - if (! (options & (HA_OPTION_COMPRESS_RECORD | HA_OPTION_READ_ONLY_DATA))) - m_info->options&= ~(HA_OPTION_COMPRESS_RECORD | HA_OPTION_READ_ONLY_DATA); - - /* Fix fileinfo for easyer debugging (actually set by rrnd) */ - file_offset=0; - for (i=0 ; (uint) i < files ; i++) - { - m_info->open_tables[i].file_offset=(my_off_t) file_offset; - file_offset+=m_info->open_tables[i].table->s->state.data_file_length; - } - if (sizeof(my_off_t) == 4 && file_offset > (ulonglong) (ulong) ~0L) - { - my_errno=HA_ERR_RECORD_FILE_FULL; - my_free((char*) m_info,MYF(0)); - goto err; - } - - m_info->end_table=m_info->open_tables+files; - m_info->last_used_table=m_info->open_tables; - - VOID(my_close(fd,MYF(0))); - end_io_cache(&file); - m_info->open_list.data=(void*) m_info; - pthread_mutex_lock(&THR_LOCK_open); - mrg_open_list=list_add(mrg_open_list,&m_info->open_list); - pthread_mutex_unlock(&THR_LOCK_open); - DBUG_RETURN(m_info); - -err: - save_errno=my_errno; - switch (errpos) { - case 1: - VOID(my_close(fd,MYF(0))); - end_io_cache(&file); - for (i=files ; i-- > 0 ; ) - { - isam=last_isam; - if (i) - last_isam=(N_INFO*) (isam->open_list.next->data); - nisam_close(isam); - } - } - my_errno=save_errno; - DBUG_RETURN (NULL); -} |