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mariadb/storage/myisam/mi_open.c
unknown f252f9248a WL#3817: Simplify string / memory area types and make things more consistent (first part) 
The following type conversions was done:

- Changed byte to uchar
- Changed gptr to uchar*
- Change my_string to char *
- Change my_size_t to size_t
- Change size_s to size_t

Removed declaration of byte, gptr, my_string, my_size_t and size_s. 

Following function parameter changes was done:
- All string functions in mysys/strings was changed to use size_t
  instead of uint for string lengths.
- All read()/write() functions changed to use size_t (including vio).
- All protocoll functions changed to use size_t instead of uint
- Functions that used a pointer to a string length was changed to use size_t*
- Changed malloc(), free() and related functions from using gptr to use void *
  as this requires fewer casts in the code and is more in line with how the
  standard functions work.
- Added extra length argument to dirname_part() to return the length of the
  created string.
- Changed (at least) following functions to take uchar* as argument:
  - db_dump()
  - my_net_write()
  - net_write_command()
  - net_store_data()
  - DBUG_DUMP()
  - decimal2bin() & bin2decimal()
- Changed my_compress() and my_uncompress() to use size_t. Changed one
  argument to my_uncompress() from a pointer to a value as we only return
  one value (makes function easier to use).
- Changed type of 'pack_data' argument to packfrm() to avoid casts.
- Changed in readfrm() and writefrom(), ha_discover and handler::discover()
  the type for argument 'frmdata' to uchar** to avoid casts.
- Changed most Field functions to use uchar* instead of char* (reduced a lot of
  casts).
- Changed field->val_xxx(xxx, new_ptr) to take const pointers.

Other changes:
- Removed a lot of not needed casts
- Added a few new cast required by other changes
- Added some cast to my_multi_malloc() arguments for safety (as string lengths
  needs to be uint, not size_t).
- Fixed all calls to hash-get-key functions to use size_t*. (Needed to be done
  explicitely as this conflict was often hided by casting the function to
  hash_get_key).
- Changed some buffers to memory regions to uchar* to avoid casts.
- Changed some string lengths from uint to size_t.
- Changed field->ptr to be uchar* instead of char*. This allowed us to
  get rid of a lot of casts.
- Some changes from true -> TRUE, false -> FALSE, unsigned char -> uchar
- Include zlib.h in some files as we needed declaration of crc32()
- Changed MY_FILE_ERROR to be (size_t) -1.
- Changed many variables to hold the result of my_read() / my_write() to be
  size_t. This was needed to properly detect errors (which are
  returned as (size_t) -1).
- Removed some very old VMS code
- Changed packfrm()/unpackfrm() to not be depending on uint size
  (portability fix)
- Removed windows specific code to restore cursor position as this
  causes slowdown on windows and we should not mix read() and pread()
  calls anyway as this is not thread safe. Updated function comment to
  reflect this. Changed function that depended on original behavior of
  my_pwrite() to itself restore the cursor position (one such case).
- Added some missing checking of return value of malloc().
- Changed definition of MOD_PAD_CHAR_TO_FULL_LENGTH to avoid 'long' overflow.
- Changed type of table_def::m_size from my_size_t to ulong to reflect that
  m_size is the number of elements in the array, not a string/memory
  length.
- Moved THD::max_row_length() to table.cc (as it's not depending on THD).
  Inlined max_row_length_blob() into this function.
- More function comments
- Fixed some compiler warnings when compiled without partitions.
- Removed setting of LEX_STRING() arguments in declaration (portability fix).
- Some trivial indentation/variable name changes.
- Some trivial code simplifications:
  - Replaced some calls to alloc_root + memcpy to use
    strmake_root()/strdup_root().
  - Changed some calls from memdup() to strmake() (Safety fix)
  - Simpler loops in client-simple.c


BitKeeper/etc/ignore:
  added libmysqld/ha_ndbcluster_cond.cc
  ---
  added debian/defs.mk debian/control
client/completion_hash.cc:
  Remove not needed casts
client/my_readline.h:
  Remove some old types
client/mysql.cc:
  Simplify types
client/mysql_upgrade.c:
  Remove some old types
  Update call to dirname_part
client/mysqladmin.cc:
  Remove some old types
client/mysqlbinlog.cc:
  Remove some old types
  Change some buffers to be uchar to avoid casts
client/mysqlcheck.c:
  Remove some old types
client/mysqldump.c:
  Remove some old types
  Remove some not needed casts
  Change some string lengths to size_t
client/mysqlimport.c:
  Remove some old types
client/mysqlshow.c:
  Remove some old types
client/mysqlslap.c:
  Remove some old types
  Remove some not needed casts
client/mysqltest.c:
  Removed some old types
  Removed some not needed casts
  Updated hash-get-key function arguments
  Updated parameters to dirname_part()
client/readline.cc:
  Removed some old types
  Removed some not needed casts
  Changed some string lengths to use size_t
client/sql_string.cc:
  Removed some old types
dbug/dbug.c:
  Removed some old types
  Changed some string lengths to use size_t
  Changed some prototypes to avoid casts
extra/comp_err.c:
  Removed some old types
extra/innochecksum.c:
  Removed some old types
extra/my_print_defaults.c:
  Removed some old types
extra/mysql_waitpid.c:
  Removed some old types
extra/perror.c:
  Removed some old types
extra/replace.c:
  Removed some old types
  Updated parameters to dirname_part()
extra/resolve_stack_dump.c:
  Removed some old types
extra/resolveip.c:
  Removed some old types
include/config-win.h:
  Removed some old types
include/decimal.h:
  Changed binary strings to be uchar* instead of char*
include/ft_global.h:
  Removed some old types
include/hash.h:
  Removed some old types
include/heap.h:
  Removed some old types
  Changed records_under_level to be 'ulong' instead of 'uint' to clarify usage of variable
include/keycache.h:
  Removed some old types
include/m_ctype.h:
  Removed some old types
  Changed some string lengths to use size_t
  Changed character length functions to return uint
  unsigned char -> uchar
include/m_string.h:
  Removed some old types
  Changed some string lengths to use size_t
include/my_alloc.h:
  Changed some string lengths to use size_t
include/my_base.h:
  Removed some old types
include/my_dbug.h:
  Removed some old types
  Changed some string lengths to use size_t
  Changed db_dump() to take uchar * as argument for memory to reduce number of casts in usage
include/my_getopt.h:
  Removed some old types
include/my_global.h:
  Removed old types:
  my_size_t -> size_t
  byte -> uchar
  gptr -> uchar *
include/my_list.h:
  Removed some old types
include/my_nosys.h:
  Removed some old types
include/my_pthread.h:
  Removed some old types
include/my_sys.h:
  Removed some old types
  Changed MY_FILE_ERROR to be in line with new definitions of my_write()/my_read()
  Changed some string lengths to use size_t
  my_malloc() / my_free() now uses void *
  Updated parameters to dirname_part() & my_uncompress()
include/my_tree.h:
  Removed some old types
include/my_trie.h:
  Removed some old types
include/my_user.h:
  Changed some string lengths to use size_t
include/my_vle.h:
  Removed some old types
include/my_xml.h:
  Removed some old types
  Changed some string lengths to use size_t
include/myisam.h:
  Removed some old types
include/myisammrg.h:
  Removed some old types
include/mysql.h:
  Removed some old types
  Changed byte streams to use uchar* instead of char*
include/mysql_com.h:
  Removed some old types
  Changed some string lengths to use size_t
  Changed some buffers to be uchar* to avoid casts
include/queues.h:
  Removed some old types
include/sql_common.h:
  Removed some old types
include/sslopt-longopts.h:
  Removed some old types
include/violite.h:
  Removed some old types
  Changed some string lengths to use size_t
libmysql/client_settings.h:
  Removed some old types
libmysql/libmysql.c:
  Removed some old types
libmysql/manager.c:
  Removed some old types
libmysqld/emb_qcache.cc:
  Removed some old types
libmysqld/emb_qcache.h:
  Removed some old types
libmysqld/lib_sql.cc:
  Removed some old types
  Removed some not needed casts
  Changed some buffers to be uchar* to avoid casts
  true -> TRUE, false -> FALSE
mysys/array.c:
  Removed some old types
mysys/charset.c:
  Changed some string lengths to use size_t
mysys/checksum.c:
  Include zlib to get definition for crc32
  Removed some old types
mysys/default.c:
  Removed some old types
  Changed some string lengths to use size_t
mysys/default_modify.c:
  Changed some string lengths to use size_t
  Removed some not needed casts
mysys/hash.c:
  Removed some old types
  Changed some string lengths to use size_t
  Note: Prototype of hash_key() has changed which may cause problems if client uses hash_init() with a cast for the hash-get-key function.
  hash_element now takes 'ulong' as the index type (cleanup)
mysys/list.c:
  Removed some old types
mysys/mf_cache.c:
  Changed some string lengths to use size_t
mysys/mf_dirname.c:
  Removed some old types
  Changed some string lengths to use size_t
  Added argument to dirname_part() to avoid calculation of length for 'to'
mysys/mf_fn_ext.c:
  Removed some old types
  Updated parameters to dirname_part()
mysys/mf_format.c:
  Removed some old types
  Changed some string lengths to use size_t
mysys/mf_getdate.c:
  Removed some old types
mysys/mf_iocache.c:
  Removed some old types
  Changed some string lengths to use size_t
  Changed calculation of 'max_length' to be done the same way in all functions
mysys/mf_iocache2.c:
  Removed some old types
  Changed some string lengths to use size_t
  Clean up comments
  Removed not needed indentation
mysys/mf_keycache.c:
  Removed some old types
mysys/mf_keycaches.c:
  Removed some old types
mysys/mf_loadpath.c:
  Removed some old types
mysys/mf_pack.c:
  Removed some old types
  Changed some string lengths to use size_t
  Removed some not needed casts
  Removed very old VMS code
  Updated parameters to dirname_part()
  Use result of dirnam_part() to remove call to strcat()
mysys/mf_path.c:
  Removed some old types
mysys/mf_radix.c:
  Removed some old types
mysys/mf_same.c:
  Removed some old types
mysys/mf_sort.c:
  Removed some old types
mysys/mf_soundex.c:
  Removed some old types
mysys/mf_strip.c:
  Removed some old types
mysys/mf_tempdir.c:
  Removed some old types
mysys/mf_unixpath.c:
  Removed some old types
mysys/mf_wfile.c:
  Removed some old types
mysys/mulalloc.c:
  Removed some old types
mysys/my_alloc.c:
  Removed some old types
  Changed some string lengths to use size_t
  Use void* as type for allocated memory area
  Removed some not needed casts
  Changed argument 'Size' to 'length' according coding guidelines
mysys/my_chsize.c:
  Changed some buffers to be uchar* to avoid casts
mysys/my_compress.c:
  More comments
  Removed some old types
  Changed string lengths to use size_t
  Changed arguments to my_uncompress() to make them easier to understand
  Changed packfrm()/unpackfrm() to not be depending on uint size (portability fix)
  Changed type of 'pack_data' argument to packfrm() to avoid casts.
mysys/my_conio.c:
  Changed some string lengths to use size_t
mysys/my_create.c:
  Removed some old types
mysys/my_div.c:
  Removed some old types
mysys/my_error.c:
  Removed some old types
mysys/my_fopen.c:
  Removed some old types
mysys/my_fstream.c:
  Removed some old types
  Changed some string lengths to use size_t
  writen -> written
mysys/my_getopt.c:
  Removed some old types
mysys/my_getwd.c:
  Removed some old types
  More comments
mysys/my_init.c:
  Removed some old types
mysys/my_largepage.c:
  Removed some old types
  Changed some string lengths to use size_t
mysys/my_lib.c:
  Removed some old types
mysys/my_lockmem.c:
  Removed some old types
mysys/my_malloc.c:
  Removed some old types
  Changed malloc(), free() and related functions to use void *
  Changed all functions to use size_t
mysys/my_memmem.c:
  Indentation cleanup
mysys/my_once.c:
  Removed some old types
  Changed malloc(), free() and related functions to use void *
mysys/my_open.c:
  Removed some old types
mysys/my_pread.c:
  Removed some old types
  Changed all functions to use size_t
  Added comment for how my_pread() / my_pwrite() are supposed to work.
  Removed windows specific code to restore cursor position as this causes slowdown on windows and we should not mix read() and pread() calls anyway as this is not thread safe.
  (If we ever would really need this, it should be enabled only with a flag argument)
mysys/my_quick.c:
  Removed some old types
  Changed all functions to use size_t
mysys/my_read.c:
  Removed some old types
  Changed all functions to use size_t
mysys/my_realloc.c:
  Removed some old types
  Use void* as type for allocated memory area
  Changed all functions to use size_t
mysys/my_static.c:
  Removed some old types
mysys/my_static.h:
  Removed some old types
mysys/my_vle.c:
  Removed some old types
mysys/my_wincond.c:
  Removed some old types
mysys/my_windac.c:
  Removed some old types
mysys/my_write.c:
  Removed some old types
  Changed all functions to use size_t
mysys/ptr_cmp.c:
  Removed some old types
  Changed all functions to use size_t
mysys/queues.c:
  Removed some old types
mysys/safemalloc.c:
  Removed some old types
  Changed malloc(), free() and related functions to use void *
  Changed all functions to use size_t
mysys/string.c:
  Removed some old types
  Changed all functions to use size_t
mysys/testhash.c:
  Removed some old types
mysys/thr_alarm.c:
  Removed some old types
mysys/thr_lock.c:
  Removed some old types
mysys/tree.c:
  Removed some old types
mysys/trie.c:
  Removed some old types
mysys/typelib.c:
  Removed some old types
plugin/daemon_example/daemon_example.cc:
  Removed some old types
regex/reginit.c:
  Removed some old types
server-tools/instance-manager/buffer.cc:
  Changed some string lengths to use size_t
  Changed buffer to be of type uchar*
server-tools/instance-manager/buffer.h:
  Changed some string lengths to use size_t
  Changed buffer to be of type uchar*
server-tools/instance-manager/commands.cc:
  Removed some old types
  Changed some string lengths to use size_t
  Changed buffer to be of type uchar*
server-tools/instance-manager/instance_map.cc:
  Removed some old types
  Changed some string lengths to use size_t
  Changed buffer to be of type uchar*
server-tools/instance-manager/instance_options.cc:
  Changed buffer to be of type uchar*
  Replaced alloc_root + strcpy() with strdup_root()
server-tools/instance-manager/mysql_connection.cc:
  Changed buffer to be of type uchar*
server-tools/instance-manager/options.cc:
  Removed some old types
server-tools/instance-manager/parse.cc:
  Changed some string lengths to use size_t
server-tools/instance-manager/parse.h:
  Removed some old types
  Changed some string lengths to use size_t
server-tools/instance-manager/protocol.cc:
  Changed some buffers to be uchar* to avoid casts
  Changed some string lengths to use size_t
server-tools/instance-manager/protocol.h:
  Changed some string lengths to use size_t
server-tools/instance-manager/user_map.cc:
  Removed some old types
  Changed some string lengths to use size_t
sql/derror.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Changed some string lengths to use size_t
sql/discover.cc:
  Changed in readfrm() and writefrom() the type for argument 'frmdata' to uchar** to avoid casts
  Changed some string lengths to use size_t
  Changed some buffers to be uchar* to avoid casts
sql/event_data_objects.cc:
  Removed some old types
  Added missing casts for alloc() and sprintf()
sql/event_db_repository.cc:
  Changed some buffers to be uchar* to avoid casts
  Added missing casts for sprintf()
sql/event_queue.cc:
  Removed some old types
sql/field.cc:
  Removed some old types
  Changed memory buffers to be uchar*
  Changed some string lengths to use size_t
  Removed a lot of casts
  Safety fix in Field_blob::val_decimal() to not access zero pointer
sql/field.h:
  Removed some old types
  Changed memory buffers to be uchar* (except of store() as this would have caused too many other changes). 
  Changed some string lengths to use size_t
  Removed some not needed casts
  Changed val_xxx(xxx, new_ptr) to take const pointers
sql/field_conv.cc:
  Removed some old types
  Added casts required because memory area pointers are now uchar*
sql/filesort.cc:
  Initalize variable that was used unitialized in error conditions
sql/gen_lex_hash.cc:
  Removed some old types
  Changed memory buffers to be uchar*
  Changed some string lengths to use size_t
  Removed a lot of casts
  Safety fix in Field_blob::val_decimal() to not access zero pointer
sql/gstream.h:
  Added required cast
sql/ha_ndbcluster.cc:
  Removed some old types
  Updated hash-get-key function arguments
  Changed some buffers to be uchar* to avoid casts
  Added required casts
  Removed some not needed casts
sql/ha_ndbcluster.h:
  Removed some old types
sql/ha_ndbcluster_binlog.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Replaced sql_alloc() + memcpy() + set end 0 with sql_strmake()
  Changed some string lengths to use size_t
  Added missing casts for alloc() and sprintf()
sql/ha_ndbcluster_binlog.h:
  Removed some old types
sql/ha_ndbcluster_cond.cc:
  Removed some old types
  Removed some not needed casts
sql/ha_ndbcluster_cond.h:
  Removed some old types
sql/ha_partition.cc:
  Removed some old types
  Changed prototype for change_partition() to avoid casts
sql/ha_partition.h:
  Removed some old types
sql/handler.cc:
  Removed some old types
  Changed some string lengths to use size_t
sql/handler.h:
  Removed some old types
  Changed some string lengths to use size_t
  Changed type for 'frmblob' parameter for discover() and ha_discover() to get fewer casts
sql/hash_filo.h:
  Removed some old types
  Changed all functions to use size_t
sql/hostname.cc:
  Removed some old types
sql/item.cc:
  Removed some old types
  Changed some string lengths to use size_t
  Use strmake() instead of memdup() to create a null terminated string.
  Updated calls to new Field()
sql/item.h:
  Removed some old types
  Changed malloc(), free() and related functions to use void *
  Changed some buffers to be uchar* to avoid casts
sql/item_cmpfunc.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
sql/item_cmpfunc.h:
  Removed some old types
sql/item_create.cc:
  Removed some old types
sql/item_func.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
  Added test for failing alloc() in init_result_field()
  Remove old confusing comment
  Fixed compiler warning
sql/item_func.h:
  Removed some old types
sql/item_row.cc:
  Removed some old types
sql/item_row.h:
  Removed some old types
sql/item_strfunc.cc:
  Include zlib (needed becasue we call crc32)
  Removed some old types
sql/item_strfunc.h:
  Removed some old types
  Changed some types to match new function prototypes
sql/item_subselect.cc:
  Removed some old types
sql/item_subselect.h:
  Removed some old types
sql/item_sum.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
sql/item_sum.h:
  Removed some old types
sql/item_timefunc.cc:
  Removed some old types
  Changed some string lengths to use size_t
sql/item_timefunc.h:
  Removed some old types
sql/item_xmlfunc.cc:
  Changed some string lengths to use size_t
sql/item_xmlfunc.h:
  Removed some old types
sql/key.cc:
  Removed some old types
  Removed some not needed casts
sql/lock.cc:
  Removed some old types
  Added some cast to my_multi_malloc() arguments for safety
sql/log.cc:
  Removed some old types
  Changed some string lengths to use size_t
  Changed some buffers to be uchar* to avoid casts
  Changed usage of pwrite() to not assume it holds the cursor position for the file
  Made usage of my_read() safer
sql/log_event.cc:
  Removed some old types
  Added checking of return value of malloc() in pack_info()
  Changed some buffers to be uchar* to avoid casts
  Removed some 'const' to avoid casts
  Added missing casts for alloc() and sprintf()
  Added required casts
  Removed some not needed casts
  Added some cast to my_multi_malloc() arguments for safety
sql/log_event.h:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
sql/log_event_old.cc:
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
sql/log_event_old.h:
  Changed some buffers to be uchar* to avoid casts
sql/mf_iocache.cc:
  Removed some old types
sql/my_decimal.cc:
  Changed memory area to use uchar*
sql/my_decimal.h:
  Changed memory area to use uchar*
sql/mysql_priv.h:
  Removed some old types
  Changed malloc(), free() and related functions to use void *
  Changed some string lengths to use size_t
  Changed definition of MOD_PAD_CHAR_TO_FULL_LENGTH to avoid long overflow
  Changed some buffers to be uchar* to avoid casts
sql/mysqld.cc:
  Removed some old types
sql/net_serv.cc:
  Removed some old types
  Changed some string lengths to use size_t
  Changed some buffers to be uchar* to avoid casts
  Ensure that vio_read()/vio_write() return values are stored in a size_t variable
  Removed some not needed casts
sql/opt_range.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
sql/opt_range.h:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
sql/opt_sum.cc:
  Removed some old types
  Removed some not needed casts
sql/parse_file.cc:
  Removed some old types
  Changed some string lengths to use size_t
  Changed alloc_root + memcpy + set end 0 -> strmake_root()
sql/parse_file.h:
  Removed some old types
sql/partition_info.cc:
  Removed some old types
  Added missing casts for alloc()
  Changed some buffers to be uchar* to avoid casts
sql/partition_info.h:
  Changed some buffers to be uchar* to avoid casts
sql/protocol.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
sql/protocol.h:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Changed some string lengths to use size_t
sql/records.cc:
  Removed some old types
sql/repl_failsafe.cc:
  Removed some old types
  Changed some string lengths to use size_t
  Added required casts
sql/rpl_filter.cc:
  Removed some old types
  Updated hash-get-key function arguments
  Changed some string lengths to use size_t
sql/rpl_filter.h:
  Changed some string lengths to use size_t
sql/rpl_injector.h:
  Removed some old types
sql/rpl_record.cc:
  Removed some old types
  Removed some not needed casts
  Changed some buffers to be uchar* to avoid casts
sql/rpl_record.h:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
sql/rpl_record_old.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
sql/rpl_record_old.h:
  Removed some old types
  Changed some buffers to be uchar* to avoid cast
sql/rpl_rli.cc:
  Removed some old types
sql/rpl_tblmap.cc:
  Removed some old types
sql/rpl_tblmap.h:
  Removed some old types
sql/rpl_utility.cc:
  Removed some old types
sql/rpl_utility.h:
  Removed some old types
  Changed type of m_size from my_size_t to ulong to reflect that m_size is the number of elements in the array, not a string/memory length
sql/set_var.cc:
  Removed some old types
  Updated parameters to dirname_part()
sql/set_var.h:
  Removed some old types
sql/slave.cc:
  Removed some old types
  Changed some string lengths to use size_t
sql/slave.h:
  Removed some old types
sql/sp.cc:
  Removed some old types
  Added missing casts for printf()
sql/sp.h:
  Removed some old types
  Updated hash-get-key function arguments
sql/sp_cache.cc:
  Removed some old types
  Added missing casts for printf()
  Updated hash-get-key function arguments
sql/sp_head.cc:
  Removed some old types
  Added missing casts for alloc() and printf()
  Added required casts
  Updated hash-get-key function arguments
sql/sp_head.h:
  Removed some old types
sql/sp_pcontext.cc:
  Removed some old types
sql/sp_pcontext.h:
  Removed some old types
sql/sql_acl.cc:
  Removed some old types
  Changed some string lengths to use size_t
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
  Added required casts
sql/sql_analyse.cc:
  Changed some buffers to be uchar* to avoid casts
sql/sql_analyse.h:
  Changed some buffers to be uchar* to avoid casts
sql/sql_array.h:
  Removed some old types
sql/sql_base.cc:
  Removed some old types
  Updated hash-get-key function arguments
sql/sql_binlog.cc:
  Removed some old types
  Added missing casts for printf()
sql/sql_cache.cc:
  Removed some old types
  Updated hash-get-key function arguments
  Removed some not needed casts
  Changed some string lengths to use size_t
sql/sql_cache.h:
  Removed some old types
  Removed reference to not existing function cache_key()
  Updated hash-get-key function arguments
sql/sql_class.cc:
  Removed some old types
  Updated hash-get-key function arguments
  Added missing casts for alloc()
  Updated hash-get-key function arguments
  Moved THD::max_row_length() to table.cc (as it's not depending on THD)
  Removed some not needed casts
sql/sql_class.h:
  Removed some old types
  Changed malloc(), free() and related functions to use void *
  Removed some not needed casts
  Changed some string lengths to use size_t
  Moved max_row_length and max_row_length_blob() to table.cc, as they are not depending on THD
sql/sql_connect.cc:
  Removed some old types
  Added required casts
sql/sql_db.cc:
  Removed some old types
  Removed some not needed casts
  Added some cast to my_multi_malloc() arguments for safety
  Added missing casts for alloc()
sql/sql_delete.cc:
  Removed some old types
sql/sql_handler.cc:
  Removed some old types
  Updated hash-get-key function arguments
  Added some cast to my_multi_malloc() arguments for safety
sql/sql_help.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
sql/sql_insert.cc:
  Removed some old types
  Added missing casts for alloc() and printf()
sql/sql_lex.cc:
  Removed some old types
sql/sql_lex.h:
  Removed some old types
  Removed some not needed casts
sql/sql_list.h:
  Removed some old types
  Removed some not needed casts
sql/sql_load.cc:
  Removed some old types
  Removed compiler warning
sql/sql_manager.cc:
  Removed some old types
sql/sql_map.cc:
  Removed some old types
sql/sql_map.h:
  Removed some old types
sql/sql_olap.cc:
  Removed some old types
sql/sql_parse.cc:
  Removed some old types
  Trivial move of code lines to make things more readable
  Changed some string lengths to use size_t
  Added missing casts for alloc()
sql/sql_partition.cc:
  Removed some old types
  Removed compiler warnings about not used functions
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
sql/sql_partition.h:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
sql/sql_plugin.cc:
  Removed some old types
  Added missing casts for alloc()
  Updated hash-get-key function arguments
sql/sql_prepare.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Added missing casts for alloc() and printf()
sql-common/client.c:
  Removed some old types
  Changed some memory areas to use uchar*
sql-common/my_user.c:
  Changed some string lengths to use size_t
sql-common/pack.c:
  Changed some buffers to be uchar* to avoid casts
sql/sql_repl.cc:
  Added required casts
  Changed some buffers to be uchar* to avoid casts
  Changed some string lengths to use size_t
sql/sql_select.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Removed some old types
sql/sql_select.h:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
sql/sql_servers.cc:
  Removed some old types
  Updated hash-get-key function arguments
sql/sql_show.cc:
  Removed some old types
  Added missing casts for alloc()
  Removed some not needed casts
sql/sql_string.cc:
  Removed some old types
  Added required casts
sql/sql_table.cc:
  Removed some old types
  Removed compiler warning about not used variable
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
sql/sql_test.cc:
  Removed some old types
sql/sql_trigger.cc:
  Removed some old types
  Added missing casts for alloc()
sql/sql_udf.cc:
  Removed some old types
  Updated hash-get-key function arguments
sql/sql_union.cc:
  Removed some old types
sql/sql_update.cc:
  Removed some old types
  Removed some not needed casts
sql/sql_view.cc:
  Removed some old types
sql/sql_yacc.yy:
  Removed some old types
  Changed some string lengths to use size_t
  Added missing casts for alloc()
sql/stacktrace.c:
  Removed some old types
sql/stacktrace.h:
  Removed some old types
sql/structs.h:
  Removed some old types
sql/table.cc:
  Removed some old types
  Updated hash-get-key function arguments
  Changed some buffers to be uchar* to avoid casts
  Removed setting of LEX_STRING() arguments in declaration
  Added required casts
  More function comments
  Moved max_row_length() here from sql_class.cc/sql_class.h
sql/table.h:
  Removed some old types
  Changed some string lengths to use size_t
sql/thr_malloc.cc:
  Use void* as type for allocated memory area
  Changed all functions to use size_t
sql/tzfile.h:
  Changed some buffers to be uchar* to avoid casts
sql/tztime.cc:
  Changed some buffers to be uchar* to avoid casts
  Updated hash-get-key function arguments
  Added missing casts for alloc()
  Removed some not needed casts
sql/uniques.cc:
  Removed some old types
  Removed some not needed casts
sql/unireg.cc:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
  Removed some not needed casts
  Added missing casts for alloc()
storage/archive/archive_reader.c:
  Removed some old types
storage/archive/azio.c:
  Removed some old types
  Removed some not needed casts
storage/archive/ha_archive.cc:
  Removed some old types
  Changed type for 'frmblob' in archive_discover() to match handler
  Updated hash-get-key function arguments
  Removed some not needed casts
storage/archive/ha_archive.h:
  Removed some old types
storage/blackhole/ha_blackhole.cc:
  Removed some old types
storage/blackhole/ha_blackhole.h:
  Removed some old types
storage/csv/ha_tina.cc:
  Removed some old types
  Updated hash-get-key function arguments
  Changed some buffers to be uchar* to avoid casts
storage/csv/ha_tina.h:
  Removed some old types
  Removed some not needed casts
storage/csv/transparent_file.cc:
  Removed some old types
  Changed type of 'bytes_read' to be able to detect read errors
  Fixed indentation
storage/csv/transparent_file.h:
  Removed some old types
storage/example/ha_example.cc:
  Removed some old types
  Updated hash-get-key function arguments
storage/example/ha_example.h:
  Removed some old types
storage/federated/ha_federated.cc:
  Removed some old types
  Updated hash-get-key function arguments
  Removed some not needed casts
storage/federated/ha_federated.h:
  Removed some old types
storage/heap/_check.c:
  Changed some buffers to be uchar* to avoid casts
storage/heap/_rectest.c:
  Removed some old types
storage/heap/ha_heap.cc:
  Removed some old types
storage/heap/ha_heap.h:
  Removed some old types
storage/heap/heapdef.h:
  Removed some old types
storage/heap/hp_block.c:
  Removed some old types
  Changed some string lengths to use size_t
storage/heap/hp_clear.c:
  Removed some old types
storage/heap/hp_close.c:
  Removed some old types
storage/heap/hp_create.c:
  Removed some old types
storage/heap/hp_delete.c:
  Removed some old types
storage/heap/hp_hash.c:
  Removed some old types
storage/heap/hp_info.c:
  Removed some old types
storage/heap/hp_open.c:
  Removed some old types
storage/heap/hp_rfirst.c:
  Removed some old types
storage/heap/hp_rkey.c:
  Removed some old types
storage/heap/hp_rlast.c:
  Removed some old types
storage/heap/hp_rnext.c:
  Removed some old types
storage/heap/hp_rprev.c:
  Removed some old types
storage/heap/hp_rrnd.c:
  Removed some old types
storage/heap/hp_rsame.c:
  Removed some old types
storage/heap/hp_scan.c:
  Removed some old types
storage/heap/hp_test1.c:
  Removed some old types
storage/heap/hp_test2.c:
  Removed some old types
storage/heap/hp_update.c:
  Removed some old types
storage/heap/hp_write.c:
  Removed some old types
  Changed some string lengths to use size_t
storage/innobase/handler/ha_innodb.cc:
  Removed some old types
  Updated hash-get-key function arguments
  Added missing casts for alloc() and printf()
  Removed some not needed casts
storage/innobase/handler/ha_innodb.h:
  Removed some old types
storage/myisam/ft_boolean_search.c:
  Removed some old types
storage/myisam/ft_nlq_search.c:
  Removed some old types
storage/myisam/ft_parser.c:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
storage/myisam/ft_static.c:
  Removed some old types
storage/myisam/ft_stopwords.c:
  Removed some old types
storage/myisam/ft_update.c:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
storage/myisam/ftdefs.h:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
storage/myisam/fulltext.h:
  Removed some old types
storage/myisam/ha_myisam.cc:
  Removed some old types
storage/myisam/ha_myisam.h:
  Removed some old types
storage/myisam/mi_cache.c:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
storage/myisam/mi_check.c:
  Removed some old types
storage/myisam/mi_checksum.c:
  Removed some old types
storage/myisam/mi_close.c:
  Removed some old types
storage/myisam/mi_create.c:
  Removed some old types
storage/myisam/mi_delete.c:
  Removed some old types
storage/myisam/mi_delete_all.c:
  Removed some old types
storage/myisam/mi_dynrec.c:
  Removed some old types
storage/myisam/mi_extra.c:
  Removed some old types
storage/myisam/mi_key.c:
  Removed some old types
storage/myisam/mi_locking.c:
  Removed some old types
storage/myisam/mi_log.c:
  Removed some old types
storage/myisam/mi_open.c:
  Removed some old types
  Removed some not needed casts
  Check argument of my_write()/my_pwrite() in functions returning int
  Added casting of string lengths to size_t
storage/myisam/mi_packrec.c:
  Removed some old types
  Changed some buffers to be uchar* to avoid casts
storage/myisam/mi_page.c:
  Removed some old types
storage/myisam/mi_preload.c:
  Removed some old types
storage/myisam/mi_range.c:
  Removed some old types
storage/myisam/mi_rfirst.c:
  Removed some old types
storage/myisam/mi_rkey.c:
  Removed some old types
storage/myisam/mi_rlast.c:
  Removed some old types
storage/myisam/mi_rnext.c:
  Removed some old types
storage/myisam/mi_rnext_same.c:
  Removed some old types
storage/myisam/mi_rprev.c:
  Removed some old types
storage/myisam/mi_rrnd.c:
  Removed some old types
storage/myisam/mi_rsame.c:
  Removed some old types
storage/myisam/mi_rsamepos.c:
  Removed some old types
storage/myisam/mi_scan.c:
  Removed some old types
storage/myisam/mi_search.c:
  Removed some old types
storage/myisam/mi_static.c:
  Removed some old types
storage/myisam/mi_statrec.c:
  Removed some old types
storage/myisam/mi_test1.c:
  Removed some old types
storage/myisam/mi_test2.c:
  Removed some old types
storage/myisam/mi_test3.c:
  Removed some old types
storage/myisam/mi_unique.c:
  Removed some old types
storage/myisam/mi_update.c:
  Removed some old types
storage/myisam/mi_write.c:
  Removed some old types
storage/myisam/myisam_ftdump.c:
  Removed some old types
storage/myisam/myisamchk.c:
  Removed some old types
storage/myisam/myisamdef.h:
  Removed some old types
storage/myisam/myisamlog.c:
  Removed some old types
  Indentation fix
storage/myisam/myisampack.c:
  Removed some old types
storage/myisam/rt_index.c:
  Removed some old types
storage/myisam/rt_split.c:
  Removed some old types
storage/myisam/sort.c:
  Removed some old types
storage/myisam/sp_defs.h:
  Removed some old types
storage/myisam/sp_key.c:
  Removed some old types
storage/myisammrg/ha_myisammrg.cc:
  Removed some old types
storage/myisammrg/ha_myisammrg.h:
  Removed some old types
storage/myisammrg/myrg_close.c:
  Removed some old types
storage/myisammrg/myrg_def.h:
  Removed some old types
storage/myisammrg/myrg_delete.c:
  Removed some old types
storage/myisammrg/myrg_open.c:
  Removed some old types
  Updated parameters to dirname_part()
storage/myisammrg/myrg_queue.c:
  Removed some old types
storage/myisammrg/myrg_rfirst.c:
  Removed some old types
storage/myisammrg/myrg_rkey.c:
  Removed some old types
storage/myisammrg/myrg_rlast.c:
  Removed some old types
storage/myisammrg/myrg_rnext.c:
  Removed some old types
storage/myisammrg/myrg_rnext_same.c:
  Removed some old types
storage/myisammrg/myrg_rprev.c:
  Removed some old types
storage/myisammrg/myrg_rrnd.c:
  Removed some old types
storage/myisammrg/myrg_rsame.c:
  Removed some old types
storage/myisammrg/myrg_update.c:
  Removed some old types
storage/myisammrg/myrg_write.c:
  Removed some old types
storage/ndb/include/util/ndb_opts.h:
  Removed some old types
storage/ndb/src/cw/cpcd/main.cpp:
  Removed some old types
storage/ndb/src/kernel/vm/Configuration.cpp:
  Removed some old types
storage/ndb/src/mgmclient/main.cpp:
  Removed some old types
storage/ndb/src/mgmsrv/InitConfigFileParser.cpp:
  Removed some old types
  Removed old disabled code
storage/ndb/src/mgmsrv/main.cpp:
  Removed some old types
storage/ndb/src/ndbapi/NdbBlob.cpp:
  Removed some old types
storage/ndb/src/ndbapi/NdbOperationDefine.cpp:
  Removed not used variable
storage/ndb/src/ndbapi/NdbOperationInt.cpp:
  Added required casts
storage/ndb/src/ndbapi/NdbScanOperation.cpp:
  Added required casts
storage/ndb/tools/delete_all.cpp:
  Removed some old types
storage/ndb/tools/desc.cpp:
  Removed some old types
storage/ndb/tools/drop_index.cpp:
  Removed some old types
storage/ndb/tools/drop_tab.cpp:
  Removed some old types
storage/ndb/tools/listTables.cpp:
  Removed some old types
storage/ndb/tools/ndb_config.cpp:
  Removed some old types
storage/ndb/tools/restore/consumer_restore.cpp:
  Changed some buffers to be uchar* to avoid casts with new defintion of packfrm()
storage/ndb/tools/restore/restore_main.cpp:
  Removed some old types
storage/ndb/tools/select_all.cpp:
  Removed some old types
storage/ndb/tools/select_count.cpp:
  Removed some old types
storage/ndb/tools/waiter.cpp:
  Removed some old types
strings/bchange.c:
  Changed function to use uchar * and size_t
strings/bcmp.c:
  Changed function to use uchar * and size_t
strings/bmove512.c:
  Changed function to use uchar * and size_t
strings/bmove_upp.c:
  Changed function to use uchar * and size_t
strings/ctype-big5.c:
  Changed functions to use size_t
  Changed character length functions to return uint
strings/ctype-bin.c:
  Changed functions to use size_t
strings/ctype-cp932.c:
  Changed functions to use size_t
  Changed character length functions to return uint
strings/ctype-czech.c:
  Fixed indentation
  Changed functions to use size_t
strings/ctype-euc_kr.c:
  Changed functions to use size_t
  Changed character length functions to return uint
strings/ctype-eucjpms.c:
  Changed functions to use size_t
  Changed character length functions to return uint
  unsigned char -> uchar
strings/ctype-gb2312.c:
  Changed functions to use size_t
  Changed character length functions to return uint
strings/ctype-gbk.c:
  Changed functions to use size_t
  Changed character length functions to return uint
strings/ctype-latin1.c:
  Changed functions to use size_t
  Changed character length functions to return uint
  unsigned char -> uchar
strings/ctype-mb.c:
  Changed functions to use size_t
  Changed character length functions to return uint
strings/ctype-simple.c:
  Changed functions to use size_t
  Simpler loops for caseup/casedown
  unsigned int -> uint
  unsigned char -> uchar
strings/ctype-sjis.c:
  Changed functions to use size_t
  Changed character length functions to return uint
strings/ctype-tis620.c:
  Changed functions to use size_t
  Changed character length functions to return uint
  unsigned char -> uchar
strings/ctype-uca.c:
  Changed functions to use size_t
  unsigned char -> uchar
strings/ctype-ucs2.c:
  Moved inclusion of stdarg.h to other includes
  usigned char -> uchar
  Changed functions to use size_t
  Changed character length functions to return uint
strings/ctype-ujis.c:
  Changed functions to use size_t
  Changed character length functions to return uint
  unsigned char -> uchar
strings/ctype-utf8.c:
  Changed functions to use size_t
  unsigned char -> uchar
  Indentation fixes
strings/ctype-win1250ch.c:
  Indentation fixes
  Changed functions to use size_t
strings/ctype.c:
  Changed functions to use size_t
strings/decimal.c:
  Changed type for memory argument to uchar *
strings/do_ctype.c:
  Indentation fixes
strings/my_strtoll10.c:
  unsigned char -> uchar
strings/my_vsnprintf.c:
  Changed functions to use size_t
strings/r_strinstr.c:
  Removed some old types
  Changed functions to use size_t
strings/str_test.c:
  Removed some old types
strings/strappend.c:
  Changed functions to use size_t
strings/strcont.c:
  Removed some old types
strings/strfill.c:
  Removed some old types
strings/strinstr.c:
  Changed functions to use size_t
strings/strlen.c:
  Changed functions to use size_t
strings/strmake.c:
  Changed functions to use size_t
strings/strnlen.c:
  Changed functions to use size_t
strings/strnmov.c:
  Changed functions to use size_t
strings/strto.c:
  unsigned char -> uchar
strings/strtod.c:
  Changed functions to use size_t
strings/strxnmov.c:
  Changed functions to use size_t
strings/xml.c:
  Changed functions to use size_t
  Indentation fixes
tests/mysql_client_test.c:
  Removed some old types
tests/thread_test.c:
  Removed some old types
vio/test-ssl.c:
  Removed some old types
vio/test-sslclient.c:
  Removed some old types
vio/test-sslserver.c:
  Removed some old types
vio/vio.c:
  Removed some old types
vio/vio_priv.h:
  Removed some old types
  Changed vio_read()/vio_write() to work with size_t
vio/viosocket.c:
  Changed vio_read()/vio_write() to work with size_t
  Indentation fixes
vio/viossl.c:
  Changed vio_read()/vio_write() to work with size_t
  Indentation fixes
vio/viosslfactories.c:
  Removed some old types
vio/viotest-ssl.c:
  Removed some old types
win/README:
  More explanations
2007-05-10 12:59:39 +03:00

1333 lines
42 KiB
C
Raw Blame History

/* 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 */
/* open a isam-database */
#include "fulltext.h"
#include "sp_defs.h"
#include "rt_index.h"
#include <m_ctype.h>
#if defined(MSDOS) || defined(__WIN__)
#ifdef __WIN__
#include <fcntl.h>
#else
#include <process.h> /* Prototype for getpid */
#endif
#endif
#ifdef VMS
#include "static.c"
#endif
static void setup_key_functions(MI_KEYDEF *keyinfo);
#define get_next_element(to,pos,size) { memcpy((char*) to,pos,(size_t) size); \
pos+=size;}
#define disk_pos_assert(pos, end_pos) \
if (pos > end_pos) \
{ \
my_errno=HA_ERR_CRASHED; \
goto err; \
}
/******************************************************************************
** Return the shared struct if the table is already open.
** In MySQL the server will handle version issues.
******************************************************************************/
MI_INFO *test_if_reopen(char *filename)
{
LIST *pos;
for (pos=myisam_open_list ; pos ; pos=pos->next)
{
MI_INFO *info=(MI_INFO*) pos->data;
MYISAM_SHARE *share=info->s;
if (!strcmp(share->unique_file_name,filename) && share->last_version)
return info;
}
return 0;
}
/******************************************************************************
open a MyISAM database.
See my_base.h for the handle_locking argument
if handle_locking and HA_OPEN_ABORT_IF_CRASHED then abort if the table
is marked crashed or if we are not using locking and the table doesn't
have an open count of 0.
******************************************************************************/
MI_INFO *mi_open(const char *name, int mode, uint open_flags)
{
int lock_error,kfile,open_mode,save_errno,have_rtree=0;
uint i,j,len,errpos,head_length,base_pos,offset,info_length,keys,
key_parts,unique_key_parts,fulltext_keys,uniques;
char name_buff[FN_REFLEN], org_name[FN_REFLEN], index_name[FN_REFLEN],
data_name[FN_REFLEN];
char *disk_cache, *disk_pos, *end_pos;
MI_INFO info,*m_info,*old_info;
MYISAM_SHARE share_buff,*share;
ulong rec_per_key_part[MI_MAX_POSSIBLE_KEY*MI_MAX_KEY_SEG];
my_off_t key_root[MI_MAX_POSSIBLE_KEY],key_del[MI_MAX_KEY_BLOCK_SIZE];
ulonglong max_key_file_length, max_data_file_length;
DBUG_ENTER("mi_open");
LINT_INIT(m_info);
kfile= -1;
lock_error=1;
errpos=0;
head_length=sizeof(share_buff.state.header);
bzero((uchar*) &info,sizeof(info));
my_realpath(name_buff, fn_format(org_name,name,"",MI_NAME_IEXT,
MY_UNPACK_FILENAME),MYF(0));
pthread_mutex_lock(&THR_LOCK_myisam);
if (!(old_info=test_if_reopen(name_buff)))
{
share= &share_buff;
bzero((uchar*) &share_buff,sizeof(share_buff));
share_buff.state.rec_per_key_part=rec_per_key_part;
share_buff.state.key_root=key_root;
share_buff.state.key_del=key_del;
share_buff.key_cache= multi_key_cache_search(name_buff, strlen(name_buff));
DBUG_EXECUTE_IF("myisam_pretend_crashed_table_on_open",
if (strstr(name, "/t1"))
{
my_errno= HA_ERR_CRASHED;
goto err;
});
if ((kfile=my_open(name_buff,(open_mode=O_RDWR) | O_SHARE,MYF(0))) < 0)
{
if ((errno != EROFS && errno != EACCES) ||
mode != O_RDONLY ||
(kfile=my_open(name_buff,(open_mode=O_RDONLY) | O_SHARE,MYF(0))) < 0)
goto err;
}
share->mode=open_mode;
errpos=1;
if (my_read(kfile,(char*) share->state.header.file_version,head_length,
MYF(MY_NABP)))
{
my_errno= HA_ERR_NOT_A_TABLE;
goto err;
}
if (memcmp((uchar*) share->state.header.file_version,
(uchar*) myisam_file_magic, 4))
{
DBUG_PRINT("error",("Wrong header in %s",name_buff));
DBUG_DUMP("error_dump",(char*) share->state.header.file_version,
head_length);
my_errno=HA_ERR_NOT_A_TABLE;
goto err;
}
share->options= mi_uint2korr(share->state.header.options);
if (share->options &
~(HA_OPTION_PACK_RECORD | HA_OPTION_PACK_KEYS |
HA_OPTION_COMPRESS_RECORD | HA_OPTION_READ_ONLY_DATA |
HA_OPTION_TEMP_COMPRESS_RECORD | HA_OPTION_CHECKSUM |
HA_OPTION_TMP_TABLE | HA_OPTION_DELAY_KEY_WRITE |
HA_OPTION_RELIES_ON_SQL_LAYER))
{
DBUG_PRINT("error",("wrong options: 0x%lx", share->options));
my_errno=HA_ERR_OLD_FILE;
goto err;
}
if ((share->options & HA_OPTION_RELIES_ON_SQL_LAYER) &&
! (open_flags & HA_OPEN_FROM_SQL_LAYER))
{
DBUG_PRINT("error", ("table cannot be openned from non-sql layer"));
my_errno= HA_ERR_UNSUPPORTED;
goto err;
}
/* Don't call realpath() if the name can't be a link */
if (!strcmp(name_buff, org_name) ||
my_readlink(index_name, org_name, MYF(0)) == -1)
(void) strmov(index_name, org_name);
*strrchr(org_name, '.')= '\0';
(void) fn_format(data_name,org_name,"",MI_NAME_DEXT,
MY_APPEND_EXT|MY_UNPACK_FILENAME|MY_RESOLVE_SYMLINKS);
info_length=mi_uint2korr(share->state.header.header_length);
base_pos=mi_uint2korr(share->state.header.base_pos);
if (!(disk_cache=(char*) my_alloca(info_length+128)))
{
my_errno=ENOMEM;
goto err;
}
end_pos=disk_cache+info_length;
errpos=2;
VOID(my_seek(kfile,0L,MY_SEEK_SET,MYF(0)));
if (!(open_flags & HA_OPEN_TMP_TABLE))
{
if ((lock_error=my_lock(kfile,F_RDLCK,0L,F_TO_EOF,
MYF(open_flags & HA_OPEN_WAIT_IF_LOCKED ?
0 : MY_DONT_WAIT))) &&
!(open_flags & HA_OPEN_IGNORE_IF_LOCKED))
goto err;
}
errpos=3;
if (my_read(kfile,disk_cache,info_length,MYF(MY_NABP)))
{
my_errno=HA_ERR_CRASHED;
goto err;
}
len=mi_uint2korr(share->state.header.state_info_length);
keys= (uint) share->state.header.keys;
uniques= (uint) share->state.header.uniques;
fulltext_keys= (uint) share->state.header.fulltext_keys;
key_parts= mi_uint2korr(share->state.header.key_parts);
unique_key_parts= mi_uint2korr(share->state.header.unique_key_parts);
if (len != MI_STATE_INFO_SIZE)
{
DBUG_PRINT("warning",
("saved_state_info_length: %d state_info_length: %d",
len,MI_STATE_INFO_SIZE));
}
share->state_diff_length=len-MI_STATE_INFO_SIZE;
mi_state_info_read((uchar*) disk_cache, &share->state);
len= mi_uint2korr(share->state.header.base_info_length);
if (len != MI_BASE_INFO_SIZE)
{
DBUG_PRINT("warning",("saved_base_info_length: %d base_info_length: %d",
len,MI_BASE_INFO_SIZE));
}
disk_pos= (char*)
my_n_base_info_read((uchar*) disk_cache + base_pos, &share->base);
share->state.state_length=base_pos;
if (!(open_flags & HA_OPEN_FOR_REPAIR) &&
((share->state.changed & STATE_CRASHED) ||
((open_flags & HA_OPEN_ABORT_IF_CRASHED) &&
(my_disable_locking && share->state.open_count))))
{
DBUG_PRINT("error",("Table is marked as crashed. open_flags: %u "
"changed: %u open_count: %u !locking: %d",
open_flags, share->state.changed,
share->state.open_count, my_disable_locking));
my_errno=((share->state.changed & STATE_CRASHED_ON_REPAIR) ?
HA_ERR_CRASHED_ON_REPAIR : HA_ERR_CRASHED_ON_USAGE);
goto err;
}
/* sanity check */
if (share->base.keystart > 65535 || share->base.rec_reflength > 8)
{
my_errno=HA_ERR_CRASHED;
goto err;
}
key_parts+=fulltext_keys*FT_SEGS;
if (share->base.max_key_length > MI_MAX_KEY_BUFF || keys > MI_MAX_KEY ||
key_parts >= MI_MAX_KEY * MI_MAX_KEY_SEG)
{
DBUG_PRINT("error",("Wrong key info: Max_key_length: %d keys: %d key_parts: %d", share->base.max_key_length, keys, key_parts));
my_errno=HA_ERR_UNSUPPORTED;
goto err;
}
/* Correct max_file_length based on length of sizeof(off_t) */
max_data_file_length=
(share->options & (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)) ?
(((ulonglong) 1 << (share->base.rec_reflength*8))-1) :
(mi_safe_mul(share->base.pack_reclength,
(ulonglong) 1 << (share->base.rec_reflength*8))-1);
max_key_file_length=
mi_safe_mul(MI_MIN_KEY_BLOCK_LENGTH,
((ulonglong) 1 << (share->base.key_reflength*8))-1);
#if SIZEOF_OFF_T == 4
set_if_smaller(max_data_file_length, INT_MAX32);
set_if_smaller(max_key_file_length, INT_MAX32);
#endif
#if USE_RAID && SYSTEM_SIZEOF_OFF_T == 4
set_if_smaller(max_key_file_length, INT_MAX32);
if (!share->base.raid_type)
{
set_if_smaller(max_data_file_length, INT_MAX32);
}
else
{
set_if_smaller(max_data_file_length,
(ulonglong) share->base.raid_chunks << 31);
}
#elif !defined(USE_RAID)
if (share->base.raid_type)
{
DBUG_PRINT("error",("Table uses RAID but we don't have RAID support"));
my_errno=HA_ERR_UNSUPPORTED;
goto err;
}
#endif
share->base.max_data_file_length=(my_off_t) max_data_file_length;
share->base.max_key_file_length=(my_off_t) max_key_file_length;
if (share->options & HA_OPTION_COMPRESS_RECORD)
share->base.max_key_length+=2; /* For safety */
if (!my_multi_malloc(MY_WME,
&share,sizeof(*share),
&share->state.rec_per_key_part,sizeof(long)*key_parts,
&share->keyinfo,keys*sizeof(MI_KEYDEF),
&share->uniqueinfo,uniques*sizeof(MI_UNIQUEDEF),
&share->keyparts,
(key_parts+unique_key_parts+keys+uniques) *
sizeof(HA_KEYSEG),
&share->rec,
(share->base.fields+1)*sizeof(MI_COLUMNDEF),
&share->blobs,sizeof(MI_BLOB)*share->base.blobs,
&share->unique_file_name,strlen(name_buff)+1,
&share->index_file_name,strlen(index_name)+1,
&share->data_file_name,strlen(data_name)+1,
&share->state.key_root,keys*sizeof(my_off_t),
&share->state.key_del,
(share->state.header.max_block_size_index*sizeof(my_off_t)),
#ifdef THREAD
&share->key_root_lock,sizeof(rw_lock_t)*keys,
#endif
&share->mmap_lock,sizeof(rw_lock_t),
NullS))
goto err;
errpos=4;
*share=share_buff;
memcpy((char*) share->state.rec_per_key_part,
(char*) rec_per_key_part, sizeof(long)*key_parts);
memcpy((char*) share->state.key_root,
(char*) key_root, sizeof(my_off_t)*keys);
memcpy((char*) share->state.key_del,
(char*) key_del, (sizeof(my_off_t) *
share->state.header.max_block_size_index));
strmov(share->unique_file_name, name_buff);
share->unique_name_length= strlen(name_buff);
strmov(share->index_file_name, index_name);
strmov(share->data_file_name, data_name);
share->blocksize=min(IO_SIZE,myisam_block_size);
{
HA_KEYSEG *pos=share->keyparts;
for (i=0 ; i < keys ; i++)
{
share->keyinfo[i].share= share;
disk_pos=mi_keydef_read(disk_pos, &share->keyinfo[i]);
disk_pos_assert(disk_pos + share->keyinfo[i].keysegs * HA_KEYSEG_SIZE,
end_pos);
if (share->keyinfo[i].key_alg == HA_KEY_ALG_RTREE)
have_rtree=1;
set_if_smaller(share->blocksize,share->keyinfo[i].block_length);
share->keyinfo[i].seg=pos;
for (j=0 ; j < share->keyinfo[i].keysegs; j++,pos++)
{
disk_pos=mi_keyseg_read(disk_pos, pos);
if (pos->flag & HA_BLOB_PART &&
! (share->options & (HA_OPTION_COMPRESS_RECORD |
HA_OPTION_PACK_RECORD)))
{
my_errno= HA_ERR_CRASHED;
goto err;
}
if (pos->type == HA_KEYTYPE_TEXT ||
pos->type == HA_KEYTYPE_VARTEXT1 ||
pos->type == HA_KEYTYPE_VARTEXT2)
{
if (!pos->language)
pos->charset=default_charset_info;
else if (!(pos->charset= get_charset(pos->language, MYF(MY_WME))))
{
my_errno=HA_ERR_UNKNOWN_CHARSET;
goto err;
}
}
else if (pos->type == HA_KEYTYPE_BINARY)
pos->charset= &my_charset_bin;
}
if (share->keyinfo[i].flag & HA_SPATIAL)
{
#ifdef HAVE_SPATIAL
uint sp_segs=SPDIMS*2;
share->keyinfo[i].seg=pos-sp_segs;
share->keyinfo[i].keysegs--;
#else
my_errno=HA_ERR_UNSUPPORTED;
goto err;
#endif
}
else if (share->keyinfo[i].flag & HA_FULLTEXT)
{
if (!fulltext_keys)
{ /* 4.0 compatibility code, to be removed in 5.0 */
share->keyinfo[i].seg=pos-FT_SEGS;
share->keyinfo[i].keysegs-=FT_SEGS;
}
else
{
uint k;
share->keyinfo[i].seg=pos;
for (k=0; k < FT_SEGS; k++)
{
*pos= ft_keysegs[k];
pos[0].language= pos[-1].language;
if (!(pos[0].charset= pos[-1].charset))
{
my_errno=HA_ERR_CRASHED;
goto err;
}
pos++;
}
}
if (!share->ft2_keyinfo.seg)
{
memcpy(& share->ft2_keyinfo, & share->keyinfo[i], sizeof(MI_KEYDEF));
share->ft2_keyinfo.keysegs=1;
share->ft2_keyinfo.flag=0;
share->ft2_keyinfo.keylength=
share->ft2_keyinfo.minlength=
share->ft2_keyinfo.maxlength=HA_FT_WLEN+share->base.rec_reflength;
share->ft2_keyinfo.seg=pos-1;
share->ft2_keyinfo.end=pos;
setup_key_functions(& share->ft2_keyinfo);
}
}
setup_key_functions(share->keyinfo+i);
share->keyinfo[i].end=pos;
pos->type=HA_KEYTYPE_END; /* End */
pos->length=share->base.rec_reflength;
pos->null_bit=0;
pos->flag=0; /* For purify */
pos++;
}
for (i=0 ; i < uniques ; i++)
{
disk_pos=mi_uniquedef_read(disk_pos, &share->uniqueinfo[i]);
disk_pos_assert(disk_pos + share->uniqueinfo[i].keysegs *
HA_KEYSEG_SIZE, end_pos);
share->uniqueinfo[i].seg=pos;
for (j=0 ; j < share->uniqueinfo[i].keysegs; j++,pos++)
{
disk_pos=mi_keyseg_read(disk_pos, pos);
if (pos->type == HA_KEYTYPE_TEXT ||
pos->type == HA_KEYTYPE_VARTEXT1 ||
pos->type == HA_KEYTYPE_VARTEXT2)
{
if (!pos->language)
pos->charset=default_charset_info;
else if (!(pos->charset= get_charset(pos->language, MYF(MY_WME))))
{
my_errno=HA_ERR_UNKNOWN_CHARSET;
goto err;
}
}
}
share->uniqueinfo[i].end=pos;
pos->type=HA_KEYTYPE_END; /* End */
pos->null_bit=0;
pos->flag=0;
pos++;
}
share->ftparsers= 0;
}
disk_pos_assert(disk_pos + share->base.fields *MI_COLUMNDEF_SIZE, end_pos);
for (i=j=offset=0 ; i < share->base.fields ; i++)
{
disk_pos=mi_recinfo_read(disk_pos,&share->rec[i]);
share->rec[i].pack_type=0;
share->rec[i].huff_tree=0;
share->rec[i].offset=offset;
if (share->rec[i].type == (int) FIELD_BLOB)
{
share->blobs[j].pack_length=
share->rec[i].length-mi_portable_sizeof_char_ptr;;
share->blobs[j].offset=offset;
j++;
}
offset+=share->rec[i].length;
}
share->rec[i].type=(int) FIELD_LAST; /* End marker */
if (offset > share->base.reclength)
{
/* purecov: begin inspected */
my_errno= HA_ERR_CRASHED;
goto err;
/* purecov: end */
}
if (! lock_error)
{
VOID(my_lock(kfile,F_UNLCK,0L,F_TO_EOF,MYF(MY_SEEK_NOT_DONE)));
lock_error=1; /* Database unlocked */
}
if (mi_open_datafile(&info, share, -1))
goto err;
errpos=5;
share->kfile=kfile;
share->this_process=(ulong) getpid();
share->last_process= share->state.process;
share->base.key_parts=key_parts;
share->base.all_key_parts=key_parts+unique_key_parts;
if (!(share->last_version=share->state.version))
share->last_version=1; /* Safety */
share->rec_reflength=share->base.rec_reflength; /* May be changed */
share->base.margin_key_file_length=(share->base.max_key_file_length -
(keys ? MI_INDEX_BLOCK_MARGIN *
share->blocksize * keys : 0));
share->blocksize=min(IO_SIZE,myisam_block_size);
share->data_file_type=STATIC_RECORD;
if (share->options & HA_OPTION_COMPRESS_RECORD)
{
share->data_file_type = COMPRESSED_RECORD;
share->options|= HA_OPTION_READ_ONLY_DATA;
info.s=share;
if (_mi_read_pack_info(&info,
(pbool)
test(!(share->options &
(HA_OPTION_PACK_RECORD |
HA_OPTION_TEMP_COMPRESS_RECORD)))))
goto err;
}
else if (share->options & HA_OPTION_PACK_RECORD)
share->data_file_type = DYNAMIC_RECORD;
my_afree((uchar*) disk_cache);
mi_setup_functions(share);
share->is_log_table= FALSE;
#ifdef THREAD
thr_lock_init(&share->lock);
VOID(pthread_mutex_init(&share->intern_lock,MY_MUTEX_INIT_FAST));
for (i=0; i<keys; i++)
VOID(my_rwlock_init(&share->key_root_lock[i], NULL));
VOID(my_rwlock_init(&share->mmap_lock, NULL));
if (!thr_lock_inited)
{
/* Probably a single threaded program; Don't use concurrent inserts */
myisam_concurrent_insert=0;
}
else if (myisam_concurrent_insert)
{
share->concurrent_insert=
((share->options & (HA_OPTION_READ_ONLY_DATA | HA_OPTION_TMP_TABLE |
HA_OPTION_COMPRESS_RECORD |
HA_OPTION_TEMP_COMPRESS_RECORD)) ||
(open_flags & HA_OPEN_TMP_TABLE) ||
have_rtree) ? 0 : 1;
if (share->concurrent_insert)
{
share->lock.get_status=mi_get_status;
share->lock.copy_status=mi_copy_status;
share->lock.update_status=mi_update_status;
share->lock.restore_status= mi_restore_status;
share->lock.check_status=mi_check_status;
}
}
#endif
/*
Memory mapping can only be requested after initializing intern_lock.
*/
if (open_flags & HA_OPEN_MMAP)
{
info.s= share;
mi_extra(&info, HA_EXTRA_MMAP, 0);
}
}
else
{
share= old_info->s;
if (mode == O_RDWR && share->mode == O_RDONLY)
{
my_errno=EACCES; /* Can't open in write mode */
goto err;
}
if (mi_open_datafile(&info, share, old_info->dfile))
goto err;
errpos=5;
have_rtree= old_info->rtree_recursion_state != NULL;
}
/* alloc and set up private structure parts */
if (!my_multi_malloc(MY_WME,
&m_info,sizeof(MI_INFO),
&info.blobs,sizeof(MI_BLOB)*share->base.blobs,
&info.buff,(share->base.max_key_block_length*2+
share->base.max_key_length),
&info.lastkey,share->base.max_key_length*3+1,
&info.first_mbr_key, share->base.max_key_length,
&info.filename,strlen(name)+1,
&info.rtree_recursion_state,have_rtree ? 1024 : 0,
NullS))
goto err;
errpos=6;
if (!have_rtree)
info.rtree_recursion_state= NULL;
strmov(info.filename,name);
memcpy(info.blobs,share->blobs,sizeof(MI_BLOB)*share->base.blobs);
info.lastkey2=info.lastkey+share->base.max_key_length;
info.s=share;
info.lastpos= HA_OFFSET_ERROR;
info.update= (short) (HA_STATE_NEXT_FOUND+HA_STATE_PREV_FOUND);
info.opt_flag=READ_CHECK_USED;
info.this_unique= (ulong) info.dfile; /* Uniq number in process */
if (share->data_file_type == COMPRESSED_RECORD)
info.this_unique= share->state.unique;
info.this_loop=0; /* Update counter */
info.last_unique= share->state.unique;
info.last_loop= share->state.update_count;
if (mode == O_RDONLY)
share->options|=HA_OPTION_READ_ONLY_DATA;
info.lock_type=F_UNLCK;
info.quick_mode=0;
info.bulk_insert=0;
info.ft1_to_ft2=0;
info.errkey= -1;
info.page_changed=1;
pthread_mutex_lock(&share->intern_lock);
info.read_record=share->read_record;
share->reopen++;
share->write_flag=MYF(MY_NABP | MY_WAIT_IF_FULL);
if (share->options & HA_OPTION_READ_ONLY_DATA)
{
info.lock_type=F_RDLCK;
share->r_locks++;
share->tot_locks++;
}
if ((open_flags & HA_OPEN_TMP_TABLE) ||
(share->options & HA_OPTION_TMP_TABLE))
{
share->temporary=share->delay_key_write=1;
share->write_flag=MYF(MY_NABP);
share->w_locks++; /* We don't have to update status */
share->tot_locks++;
info.lock_type=F_WRLCK;
}
if (((open_flags & HA_OPEN_DELAY_KEY_WRITE) ||
(share->options & HA_OPTION_DELAY_KEY_WRITE)) &&
myisam_delay_key_write)
share->delay_key_write=1;
info.state= &share->state.state; /* Change global values by default */
pthread_mutex_unlock(&share->intern_lock);
/* Allocate buffer for one record */
/* prerequisites: bzero(info) && info->s=share; are met. */
if (!mi_alloc_rec_buff(&info, -1, &info.rec_buff))
goto err;
bzero(info.rec_buff, mi_get_rec_buff_len(&info, info.rec_buff));
*m_info=info;
#ifdef THREAD
thr_lock_data_init(&share->lock,&m_info->lock,(void*) m_info);
#endif
m_info->open_list.data=(void*) m_info;
myisam_open_list=list_add(myisam_open_list,&m_info->open_list);
pthread_mutex_unlock(&THR_LOCK_myisam);
if (myisam_log_file >= 0)
{
intern_filename(name_buff,share->index_file_name);
_myisam_log(MI_LOG_OPEN, m_info,name_buff, strlen(name_buff));
}
DBUG_RETURN(m_info);
err:
save_errno=my_errno ? my_errno : HA_ERR_END_OF_FILE;
if ((save_errno == HA_ERR_CRASHED) ||
(save_errno == HA_ERR_CRASHED_ON_USAGE) ||
(save_errno == HA_ERR_CRASHED_ON_REPAIR))
mi_report_error(save_errno, name);
switch (errpos) {
case 6:
my_free((uchar*) m_info,MYF(0));
/* fall through */
case 5:
VOID(my_close(info.dfile,MYF(0)));
if (old_info)
break; /* Don't remove open table */
/* fall through */
case 4:
my_free((uchar*) share,MYF(0));
/* fall through */
case 3:
if (! lock_error)
VOID(my_lock(kfile, F_UNLCK, 0L, F_TO_EOF, MYF(MY_SEEK_NOT_DONE)));
/* fall through */
case 2:
my_afree((uchar*) disk_cache);
/* fall through */
case 1:
VOID(my_close(kfile,MYF(0)));
/* fall through */
case 0:
default:
break;
}
pthread_mutex_unlock(&THR_LOCK_myisam);
my_errno=save_errno;
DBUG_RETURN (NULL);
} /* mi_open */
uchar *mi_alloc_rec_buff(MI_INFO *info, ulong length, uchar **buf)
{
uint extra;
uint32 old_length;
LINT_INIT(old_length);
if (! *buf || length > (old_length=mi_get_rec_buff_len(info, *buf)))
{
uchar *newptr = *buf;
/* to simplify initial init of info->rec_buf in mi_open and mi_extra */
if (length == (ulong) -1)
{
length= max(info->s->base.pack_reclength,
info->s->base.max_key_length);
/* Avoid unnecessary realloc */
if (newptr && length == old_length)
return newptr;
}
extra= ((info->s->options & HA_OPTION_PACK_RECORD) ?
ALIGN_SIZE(MI_MAX_DYN_BLOCK_HEADER)+MI_SPLIT_LENGTH+
MI_REC_BUFF_OFFSET : 0);
if (extra && newptr)
newptr-= MI_REC_BUFF_OFFSET;
if (!(newptr=(uchar*) my_realloc((uchar*)newptr, length+extra+8,
MYF(MY_ALLOW_ZERO_PTR))))
return newptr;
*((uint32 *) newptr)= (uint32) length;
*buf= newptr+(extra ? MI_REC_BUFF_OFFSET : 0);
}
return *buf;
}
ulonglong mi_safe_mul(ulonglong a, ulonglong b)
{
ulonglong max_val= ~ (ulonglong) 0; /* my_off_t is unsigned */
if (!a || max_val / a < b)
return max_val;
return a*b;
}
/* Set up functions in structs */
void mi_setup_functions(register MYISAM_SHARE *share)
{
if (share->options & HA_OPTION_COMPRESS_RECORD)
{
share->read_record=_mi_read_pack_record;
share->read_rnd=_mi_read_rnd_pack_record;
if (!(share->options & HA_OPTION_TEMP_COMPRESS_RECORD))
share->calc_checksum=0; /* No checksum */
else if (share->options & HA_OPTION_PACK_RECORD)
share->calc_checksum= mi_checksum;
else
share->calc_checksum= mi_static_checksum;
}
else if (share->options & HA_OPTION_PACK_RECORD)
{
share->read_record=_mi_read_dynamic_record;
share->read_rnd=_mi_read_rnd_dynamic_record;
share->delete_record=_mi_delete_dynamic_record;
share->compare_record=_mi_cmp_dynamic_record;
share->compare_unique=_mi_cmp_dynamic_unique;
share->calc_checksum= mi_checksum;
/* add bits used to pack data to pack_reclength for faster allocation */
share->base.pack_reclength+= share->base.pack_bits;
if (share->base.blobs)
{
share->update_record=_mi_update_blob_record;
share->write_record=_mi_write_blob_record;
}
else
{
share->write_record=_mi_write_dynamic_record;
share->update_record=_mi_update_dynamic_record;
}
}
else
{
share->read_record=_mi_read_static_record;
share->read_rnd=_mi_read_rnd_static_record;
share->delete_record=_mi_delete_static_record;
share->compare_record=_mi_cmp_static_record;
share->update_record=_mi_update_static_record;
share->write_record=_mi_write_static_record;
share->compare_unique=_mi_cmp_static_unique;
share->calc_checksum= mi_static_checksum;
}
share->file_read= mi_nommap_pread;
share->file_write= mi_nommap_pwrite;
if (!(share->options & HA_OPTION_CHECKSUM))
share->calc_checksum=0;
return;
}
static void setup_key_functions(register MI_KEYDEF *keyinfo)
{
if (keyinfo->key_alg == HA_KEY_ALG_RTREE)
{
#ifdef HAVE_RTREE_KEYS
keyinfo->ck_insert = rtree_insert;
keyinfo->ck_delete = rtree_delete;
#else
DBUG_ASSERT(0); /* mi_open should check it never happens */
#endif
}
else
{
keyinfo->ck_insert = _mi_ck_write;
keyinfo->ck_delete = _mi_ck_delete;
}
if (keyinfo->flag & HA_BINARY_PACK_KEY)
{ /* Simple prefix compression */
keyinfo->bin_search=_mi_seq_search;
keyinfo->get_key=_mi_get_binary_pack_key;
keyinfo->pack_key=_mi_calc_bin_pack_key_length;
keyinfo->store_key=_mi_store_bin_pack_key;
}
else if (keyinfo->flag & HA_VAR_LENGTH_KEY)
{
keyinfo->get_key= _mi_get_pack_key;
if (keyinfo->seg[0].flag & HA_PACK_KEY)
{ /* Prefix compression */
if (!keyinfo->seg->charset || use_strnxfrm(keyinfo->seg->charset) ||
(keyinfo->seg->flag & HA_NULL_PART))
keyinfo->bin_search=_mi_seq_search;
else
keyinfo->bin_search=_mi_prefix_search;
keyinfo->pack_key=_mi_calc_var_pack_key_length;
keyinfo->store_key=_mi_store_var_pack_key;
}
else
{
keyinfo->bin_search=_mi_seq_search;
keyinfo->pack_key=_mi_calc_var_key_length; /* Variable length key */
keyinfo->store_key=_mi_store_static_key;
}
}
else
{
keyinfo->bin_search=_mi_bin_search;
keyinfo->get_key=_mi_get_static_key;
keyinfo->pack_key=_mi_calc_static_key_length;
keyinfo->store_key=_mi_store_static_key;
}
return;
}
/*
Function to save and store the header in the index file (.MYI)
*/
uint mi_state_info_write(File file, MI_STATE_INFO *state, uint pWrite)
{
uchar buff[MI_STATE_INFO_SIZE + MI_STATE_EXTRA_SIZE];
uchar *ptr=buff;
uint i, keys= (uint) state->header.keys,
key_blocks=state->header.max_block_size_index;
DBUG_ENTER("mi_state_info_write");
memcpy_fixed(ptr,&state->header,sizeof(state->header));
ptr+=sizeof(state->header);
/* open_count must be first because of _mi_mark_file_changed ! */
mi_int2store(ptr,state->open_count); ptr +=2;
*ptr++= (uchar)state->changed; *ptr++= state->sortkey;
mi_rowstore(ptr,state->state.records); ptr +=8;
mi_rowstore(ptr,state->state.del); ptr +=8;
mi_rowstore(ptr,state->split); ptr +=8;
mi_sizestore(ptr,state->dellink); ptr +=8;
mi_sizestore(ptr,state->state.key_file_length); ptr +=8;
mi_sizestore(ptr,state->state.data_file_length); ptr +=8;
mi_sizestore(ptr,state->state.empty); ptr +=8;
mi_sizestore(ptr,state->state.key_empty); ptr +=8;
mi_int8store(ptr,state->auto_increment); ptr +=8;
mi_int8store(ptr,(ulonglong) state->state.checksum);ptr +=8;
mi_int4store(ptr,state->process); ptr +=4;
mi_int4store(ptr,state->unique); ptr +=4;
mi_int4store(ptr,state->status); ptr +=4;
mi_int4store(ptr,state->update_count); ptr +=4;
ptr+=state->state_diff_length;
for (i=0; i < keys; i++)
{
mi_sizestore(ptr,state->key_root[i]); ptr +=8;
}
for (i=0; i < key_blocks; i++)
{
mi_sizestore(ptr,state->key_del[i]); ptr +=8;
}
if (pWrite & 2) /* From isamchk */
{
uint key_parts= mi_uint2korr(state->header.key_parts);
mi_int4store(ptr,state->sec_index_changed); ptr +=4;
mi_int4store(ptr,state->sec_index_used); ptr +=4;
mi_int4store(ptr,state->version); ptr +=4;
mi_int8store(ptr,state->key_map); ptr +=8;
mi_int8store(ptr,(ulonglong) state->create_time); ptr +=8;
mi_int8store(ptr,(ulonglong) state->recover_time); ptr +=8;
mi_int8store(ptr,(ulonglong) state->check_time); ptr +=8;
mi_sizestore(ptr,state->rec_per_key_rows); ptr+=8;
for (i=0 ; i < key_parts ; i++)
{
mi_int4store(ptr,state->rec_per_key_part[i]); ptr+=4;
}
}
if (pWrite & 1)
DBUG_RETURN(my_pwrite(file, buff, (size_t) (ptr-buff), 0L,
MYF(MY_NABP | MY_THREADSAFE)) != 0);
DBUG_RETURN(my_write(file, buff, (size_t) (ptr-buff),
MYF(MY_NABP)) != 0);
}
uchar *mi_state_info_read(uchar *ptr, MI_STATE_INFO *state)
{
uint i,keys,key_parts,key_blocks;
memcpy_fixed(&state->header,ptr, sizeof(state->header));
ptr +=sizeof(state->header);
keys=(uint) state->header.keys;
key_parts=mi_uint2korr(state->header.key_parts);
key_blocks=state->header.max_block_size_index;
state->open_count = mi_uint2korr(ptr); ptr +=2;
state->changed= (bool) *ptr++;
state->sortkey = (uint) *ptr++;
state->state.records= mi_rowkorr(ptr); ptr +=8;
state->state.del = mi_rowkorr(ptr); ptr +=8;
state->split = mi_rowkorr(ptr); ptr +=8;
state->dellink= mi_sizekorr(ptr); ptr +=8;
state->state.key_file_length = mi_sizekorr(ptr); ptr +=8;
state->state.data_file_length= mi_sizekorr(ptr); ptr +=8;
state->state.empty = mi_sizekorr(ptr); ptr +=8;
state->state.key_empty= mi_sizekorr(ptr); ptr +=8;
state->auto_increment=mi_uint8korr(ptr); ptr +=8;
state->state.checksum=(ha_checksum) mi_uint8korr(ptr); ptr +=8;
state->process= mi_uint4korr(ptr); ptr +=4;
state->unique = mi_uint4korr(ptr); ptr +=4;
state->status = mi_uint4korr(ptr); ptr +=4;
state->update_count=mi_uint4korr(ptr); ptr +=4;
ptr+= state->state_diff_length;
for (i=0; i < keys; i++)
{
state->key_root[i]= mi_sizekorr(ptr); ptr +=8;
}
for (i=0; i < key_blocks; i++)
{
state->key_del[i] = mi_sizekorr(ptr); ptr +=8;
}
state->sec_index_changed = mi_uint4korr(ptr); ptr +=4;
state->sec_index_used = mi_uint4korr(ptr); ptr +=4;
state->version = mi_uint4korr(ptr); ptr +=4;
state->key_map = mi_uint8korr(ptr); ptr +=8;
state->create_time = (time_t) mi_sizekorr(ptr); ptr +=8;
state->recover_time =(time_t) mi_sizekorr(ptr); ptr +=8;
state->check_time = (time_t) mi_sizekorr(ptr); ptr +=8;
state->rec_per_key_rows=mi_sizekorr(ptr); ptr +=8;
for (i=0 ; i < key_parts ; i++)
{
state->rec_per_key_part[i]= mi_uint4korr(ptr); ptr+=4;
}
return ptr;
}
uint mi_state_info_read_dsk(File file, MI_STATE_INFO *state, my_bool pRead)
{
char buff[MI_STATE_INFO_SIZE + MI_STATE_EXTRA_SIZE];
if (!myisam_single_user)
{
if (pRead)
{
if (my_pread(file, buff, state->state_length,0L, MYF(MY_NABP)))
return 1;
}
else if (my_read(file, buff, state->state_length,MYF(MY_NABP)))
return 1;
mi_state_info_read((uchar*) buff, state);
}
return 0;
}
/****************************************************************************
** store and read of MI_BASE_INFO
****************************************************************************/
uint mi_base_info_write(File file, MI_BASE_INFO *base)
{
uchar buff[MI_BASE_INFO_SIZE], *ptr=buff;
mi_sizestore(ptr,base->keystart); ptr +=8;
mi_sizestore(ptr,base->max_data_file_length); ptr +=8;
mi_sizestore(ptr,base->max_key_file_length); ptr +=8;
mi_rowstore(ptr,base->records); ptr +=8;
mi_rowstore(ptr,base->reloc); ptr +=8;
mi_int4store(ptr,base->mean_row_length); ptr +=4;
mi_int4store(ptr,base->reclength); ptr +=4;
mi_int4store(ptr,base->pack_reclength); ptr +=4;
mi_int4store(ptr,base->min_pack_length); ptr +=4;
mi_int4store(ptr,base->max_pack_length); ptr +=4;
mi_int4store(ptr,base->min_block_length); ptr +=4;
mi_int4store(ptr,base->fields); ptr +=4;
mi_int4store(ptr,base->pack_fields); ptr +=4;
*ptr++=base->rec_reflength;
*ptr++=base->key_reflength;
*ptr++=base->keys;
*ptr++=base->auto_key;
mi_int2store(ptr,base->pack_bits); ptr +=2;
mi_int2store(ptr,base->blobs); ptr +=2;
mi_int2store(ptr,base->max_key_block_length); ptr +=2;
mi_int2store(ptr,base->max_key_length); ptr +=2;
mi_int2store(ptr,base->extra_alloc_bytes); ptr +=2;
*ptr++= base->extra_alloc_procent;
*ptr++= base->raid_type;
mi_int2store(ptr,base->raid_chunks); ptr +=2;
mi_int4store(ptr,base->raid_chunksize); ptr +=4;
bzero(ptr,6); ptr +=6; /* extra */
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
uchar *my_n_base_info_read(uchar *ptr, MI_BASE_INFO *base)
{
base->keystart = mi_sizekorr(ptr); ptr +=8;
base->max_data_file_length = mi_sizekorr(ptr); ptr +=8;
base->max_key_file_length = mi_sizekorr(ptr); ptr +=8;
base->records = (ha_rows) mi_sizekorr(ptr); ptr +=8;
base->reloc = (ha_rows) mi_sizekorr(ptr); ptr +=8;
base->mean_row_length = mi_uint4korr(ptr); ptr +=4;
base->reclength = mi_uint4korr(ptr); ptr +=4;
base->pack_reclength = mi_uint4korr(ptr); ptr +=4;
base->min_pack_length = mi_uint4korr(ptr); ptr +=4;
base->max_pack_length = mi_uint4korr(ptr); ptr +=4;
base->min_block_length = mi_uint4korr(ptr); ptr +=4;
base->fields = mi_uint4korr(ptr); ptr +=4;
base->pack_fields = mi_uint4korr(ptr); ptr +=4;
base->rec_reflength = *ptr++;
base->key_reflength = *ptr++;
base->keys= *ptr++;
base->auto_key= *ptr++;
base->pack_bits = mi_uint2korr(ptr); ptr +=2;
base->blobs = mi_uint2korr(ptr); ptr +=2;
base->max_key_block_length= mi_uint2korr(ptr); ptr +=2;
base->max_key_length = mi_uint2korr(ptr); ptr +=2;
base->extra_alloc_bytes = mi_uint2korr(ptr); ptr +=2;
base->extra_alloc_procent = *ptr++;
base->raid_type= *ptr++;
base->raid_chunks= mi_uint2korr(ptr); ptr +=2;
base->raid_chunksize= mi_uint4korr(ptr); ptr +=4;
/* TO BE REMOVED: Fix for old RAID files */
if (base->raid_type == 0)
{
base->raid_chunks=0;
base->raid_chunksize=0;
}
ptr+=6;
return ptr;
}
/*--------------------------------------------------------------------------
mi_keydef
---------------------------------------------------------------------------*/
uint mi_keydef_write(File file, MI_KEYDEF *keydef)
{
uchar buff[MI_KEYDEF_SIZE];
uchar *ptr=buff;
*ptr++ = (uchar) keydef->keysegs;
*ptr++ = keydef->key_alg; /* Rtree or Btree */
mi_int2store(ptr,keydef->flag); ptr +=2;
mi_int2store(ptr,keydef->block_length); ptr +=2;
mi_int2store(ptr,keydef->keylength); ptr +=2;
mi_int2store(ptr,keydef->minlength); ptr +=2;
mi_int2store(ptr,keydef->maxlength); ptr +=2;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
char *mi_keydef_read(char *ptr, MI_KEYDEF *keydef)
{
keydef->keysegs = (uint) *ptr++;
keydef->key_alg = *ptr++; /* Rtree or Btree */
keydef->flag = mi_uint2korr(ptr); ptr +=2;
keydef->block_length = mi_uint2korr(ptr); ptr +=2;
keydef->keylength = mi_uint2korr(ptr); ptr +=2;
keydef->minlength = mi_uint2korr(ptr); ptr +=2;
keydef->maxlength = mi_uint2korr(ptr); ptr +=2;
keydef->block_size_index= keydef->block_length/MI_MIN_KEY_BLOCK_LENGTH-1;
keydef->underflow_block_length=keydef->block_length/3;
keydef->version = 0; /* Not saved */
keydef->parser = &ft_default_parser;
keydef->ftparser_nr = 0;
return ptr;
}
/***************************************************************************
** mi_keyseg
***************************************************************************/
int mi_keyseg_write(File file, const HA_KEYSEG *keyseg)
{
uchar buff[HA_KEYSEG_SIZE];
uchar *ptr=buff;
ulong pos;
*ptr++= keyseg->type;
*ptr++= keyseg->language;
*ptr++= keyseg->null_bit;
*ptr++= keyseg->bit_start;
*ptr++= keyseg->bit_end;
*ptr++= keyseg->bit_length;
mi_int2store(ptr,keyseg->flag); ptr+=2;
mi_int2store(ptr,keyseg->length); ptr+=2;
mi_int4store(ptr,keyseg->start); ptr+=4;
pos= keyseg->null_bit ? keyseg->null_pos : keyseg->bit_pos;
mi_int4store(ptr, pos);
ptr+=4;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
char *mi_keyseg_read(char *ptr, HA_KEYSEG *keyseg)
{
keyseg->type = *ptr++;
keyseg->language = *ptr++;
keyseg->null_bit = *ptr++;
keyseg->bit_start = *ptr++;
keyseg->bit_end = *ptr++;
keyseg->bit_length = *ptr++;
keyseg->flag = mi_uint2korr(ptr); ptr +=2;
keyseg->length = mi_uint2korr(ptr); ptr +=2;
keyseg->start = mi_uint4korr(ptr); ptr +=4;
keyseg->null_pos = mi_uint4korr(ptr); ptr +=4;
keyseg->charset=0; /* Will be filled in later */
if (keyseg->null_bit)
keyseg->bit_pos= (uint16)(keyseg->null_pos + (keyseg->null_bit == 7));
else
{
keyseg->bit_pos= (uint16)keyseg->null_pos;
keyseg->null_pos= 0;
}
return ptr;
}
/*--------------------------------------------------------------------------
mi_uniquedef
---------------------------------------------------------------------------*/
uint mi_uniquedef_write(File file, MI_UNIQUEDEF *def)
{
uchar buff[MI_UNIQUEDEF_SIZE];
uchar *ptr=buff;
mi_int2store(ptr,def->keysegs); ptr+=2;
*ptr++= (uchar) def->key;
*ptr++ = (uchar) def->null_are_equal;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
char *mi_uniquedef_read(char *ptr, MI_UNIQUEDEF *def)
{
def->keysegs = mi_uint2korr(ptr);
def->key = ptr[2];
def->null_are_equal=ptr[3];
return ptr+4; /* 1 extra byte */
}
/***************************************************************************
** MI_COLUMNDEF
***************************************************************************/
uint mi_recinfo_write(File file, MI_COLUMNDEF *recinfo)
{
uchar buff[MI_COLUMNDEF_SIZE];
uchar *ptr=buff;
mi_int2store(ptr,recinfo->type); ptr +=2;
mi_int2store(ptr,recinfo->length); ptr +=2;
*ptr++ = recinfo->null_bit;
mi_int2store(ptr,recinfo->null_pos); ptr+= 2;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
char *mi_recinfo_read(char *ptr, MI_COLUMNDEF *recinfo)
{
recinfo->type= mi_sint2korr(ptr); ptr +=2;
recinfo->length=mi_uint2korr(ptr); ptr +=2;
recinfo->null_bit= (uint8) *ptr++;
recinfo->null_pos=mi_uint2korr(ptr); ptr +=2;
return ptr;
}
/**************************************************************************
Open data file with or without RAID
We can't use dup() here as the data file descriptors need to have different
active seek-positions.
The argument file_to_dup is here for the future if there would on some OS
exist a dup()-like call that would give us two different file descriptors.
*************************************************************************/
int mi_open_datafile(MI_INFO *info, MYISAM_SHARE *share,
File file_to_dup __attribute__((unused)))
{
#ifdef USE_RAID
if (share->base.raid_type)
{
info->dfile=my_raid_open(share->data_file_name,
share->mode | O_SHARE,
share->base.raid_type,
share->base.raid_chunks,
share->base.raid_chunksize,
MYF(MY_WME | MY_RAID));
}
else
#endif
info->dfile=my_open(share->data_file_name, share->mode | O_SHARE,
MYF(MY_WME));
return info->dfile >= 0 ? 0 : 1;
}
int mi_open_keyfile(MYISAM_SHARE *share)
{
if ((share->kfile=my_open(share->unique_file_name, share->mode | O_SHARE,
MYF(MY_WME))) < 0)
return 1;
return 0;
}
/*
Disable all indexes.
SYNOPSIS
mi_disable_indexes()
info A pointer to the MyISAM storage engine MI_INFO struct.
DESCRIPTION
Disable all indexes.
RETURN
0 ok
*/
int mi_disable_indexes(MI_INFO *info)
{
MYISAM_SHARE *share= info->s;
mi_clear_all_keys_active(share->state.key_map);
return 0;
}
/*
Enable all indexes
SYNOPSIS
mi_enable_indexes()
info A pointer to the MyISAM storage engine MI_INFO struct.
DESCRIPTION
Enable all indexes. The indexes might have been disabled
by mi_disable_index() before.
The function works only if both data and indexes are empty,
otherwise a repair is required.
To be sure, call handler::delete_all_rows() before.
RETURN
0 ok
HA_ERR_CRASHED data or index is non-empty.
*/
int mi_enable_indexes(MI_INFO *info)
{
int error= 0;
MYISAM_SHARE *share= info->s;
if (share->state.state.data_file_length ||
(share->state.state.key_file_length != share->base.keystart))
{
mi_print_error(info->s, HA_ERR_CRASHED);
error= HA_ERR_CRASHED;
}
else
mi_set_all_keys_active(share->state.key_map, share->base.keys);
return error;
}
/*
Test if indexes are disabled.
SYNOPSIS
mi_indexes_are_disabled()
info A pointer to the MyISAM storage engine MI_INFO struct.
DESCRIPTION
Test if indexes are disabled.
RETURN
0 indexes are not disabled
1 all indexes are disabled
2 non-unique indexes are disabled
*/
int mi_indexes_are_disabled(MI_INFO *info)
{
MYISAM_SHARE *share= info->s;
/*
No keys or all are enabled. keys is the number of keys. Left shifted
gives us only one bit set. When decreased by one, gives us all all bits
up to this one set and it gets unset.
*/
if (!share->base.keys ||
(mi_is_all_keys_active(share->state.key_map, share->base.keys)))
return 0;
/* All are disabled */
if (mi_is_any_key_active(share->state.key_map))
return 1;
/*
We have keys. Some enabled, some disabled.
Don't check for any non-unique disabled but return directly 2
*/
return 2;
}
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