mariadb/mysys/my_handler.c
unknown 30d3d8d3fc Fixed several bugs in page CRC handling
- Ignore CRC errors in REDO for potential new pages
- Ignore CRC errors when repairing tables
- Don't do readcheck callback on read error
- Set my_errno to HA_ERR_WRONG_CRC if we find page with wrong CRC
- Check index page for length before calculating CRC to catch bad pages
Fixed bugs where we used wrong file descriptor to read/write bitmaps
Fixed wrong hash key in 'files_in_flush'
Fixed wrong lock method when writing bitmap
Fixed some wrong printf statements in check/repair that caused core dumps
Fixed argument to translog_page_validator that cause reading of log files to fail
Store number of bytes used for delete-linked key pages to be able to use standard index CRC for deleted key pages.
Use fast 'dummy' pagecheck callbacks for temporary tables
Don't die silently if flush finds pinned pages
Give error (for now) if one tries to create a transactional table with fulltext or spatial keys
Removed some not needed calls to pagecache_file_init()
Added checking of pagecache checksums to ma_test1 and ma_test2
More DBUG
Fixed some DBUG_PRINT to be in line with rest of the code


include/my_base.h:
  Added HA_ERR_INTERNAL_ERROR (used for flush with pinned pages) and HA_ERR_WRONG_CRC
mysql-test/r/binlog_unsafe.result:
  Added missing DROP VIEW statement
mysql-test/r/maria.result:
  Added TRANSACTIONAL=0 when testing with fulltext keys
  Added test that verifies we can't yet create transactional test with fulltext or spatial keys
mysql-test/r/ps_maria.result:
  Added TRANSACTIONAL=0 when testing with fulltext keys
mysql-test/t/binlog_unsafe.test:
  Added missing DROP VIEW statement
mysql-test/t/maria.test:
  Added TRANSACTIONAL=0 when testing with fulltext keys
  Added test that verifies we can't yet create transactional test with fulltext or spatial keys
mysql-test/t/ps_maria.test:
  Added TRANSACTIONAL=0 when testing with fulltext keys
mysys/my_fopen.c:
  Fd: -> fd:
mysys/my_handler.c:
  Added new error messages
mysys/my_lock.c:
  Fd: -> fd:
mysys/my_pread.c:
  Fd: -> fd:
mysys/my_read.c:
  Fd: -> fd:
mysys/my_seek.c:
  Fd: -> fd:
mysys/my_sync.c:
  Fd: -> fd:
mysys/my_write.c:
  Fd: -> fd:
sql/mysqld.cc:
  Fixed wrong argument to my_uuid_init()
sql/sql_plugin.cc:
  Unified DBUG_PRINT (for convert-dbug-for-diff)
storage/maria/ma_bitmap.c:
  Fixed wrong lock method when writing bitmap
  Fixed valgrind error
  Use fast  'dummy' pagecheck callbacks for temporary tables
  Faster bitmap handling for non transational tables
storage/maria/ma_blockrec.c:
  Fixed that bitmap reading is done with the correct filehandle
  Handle reading of pages with wrong CRC when page contect doesn't matter
  Use the page buffer also when we get WRONG CRC or FILE_TOO_SHORT. (Faster and fixed a couple of bugs)
storage/maria/ma_check.c:
  Split long strings for readablity
  Fixed some wrong printf statements that caused core dumps
  Use bitmap.file for bitmaps
  Ignore pages with wrong CRC
storage/maria/ma_close.c:
  More DBUG_PRINT
storage/maria/ma_create.c:
  Give error (for now) if one tries to create a crash safe table with fulltext or spatial keys
storage/maria/ma_key_recover.c:
  Ignore HA_ERR_WRONG_CRC for new pages
  info->s  ->  share
  Store number of bytes used for delete-linked key pages to be able to use standard index CRC for deleted key pages.
storage/maria/ma_loghandler.c:
  Fixed argument to translog_page_validator()
storage/maria/ma_open.c:
  Removed old VMS specific code
  Added function to setup pagecache callbacks
  Moved code around to set 'share->temporary' early
  Removed some not needed calls to pagecache_file_init()
storage/maria/ma_page.c:
  Store number of bytes used for delete-linked key pages to be able to use standard index CRC for deleted key pages.
storage/maria/ma_pagecache.c:
  Don't do readcheck callback on read error
  Reset PCBLOCK_ERROR in pagecache_unlock_by_link() if we write page
  Set my_errno to HA_ER_INTERNAL_ERROR if flush() finds pinned pages
  Don't die silently if flush finds pinned pages.
  Use correct file descriptor when flushing pages
  Fixed wrong hash key in 'files_in_flush';  This must be the file descriptor, not the PAGECACHE_FILE as there may be several PAGECACHE_FILE for same file descriptor
  More DBUG_PRINT
storage/maria/ma_pagecrc.c:
  Removed inline from not tiny static function
  Set my_errno to HA_ERR_WRONG_CRC if we find page with wrong CRC
  (Otherwise my_errno may be 0, and a lot of other code will be confused)
  CRCerror -> error (to keep code uniform)
  Print crc with %lu, as in my_checksum()
  uchar* -> uchar *
  Check index page for length before calculating CRC to catch bad pages
  Added 'dummy' crc_check and filler functions that are used for temporary tables
storage/maria/ma_recovery.c:
  More DBUG
  More message to users to give information what phase failed
  Better error message if recovery failed
storage/maria/ma_test1.c:
  Added checking of page checksums (combined with 'c' to not have to add more test runs)
storage/maria/ma_test2.c:
  Added checking of page checksums (combined with 'c' to not have to add more test runs)
storage/maria/maria_chk.c:
  Fixed wrong argument to _ma_check_print_error()
storage/maria/maria_def.h:
  Added format information to _ma_check_print_xxxx functions
  uchar* -> uchar *
2007-12-18 03:21:32 +02:00

655 lines
19 KiB
C

/* Copyright (C) 2002-2006 MySQL AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; version 2
of the License.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA */
#include <my_global.h>
#include <m_ctype.h>
#include <my_base.h>
#include <my_handler.h>
#include <my_sys.h>
int ha_compare_text(CHARSET_INFO *charset_info, const uchar *a, uint a_length,
const uchar *b, uint b_length, my_bool part_key,
my_bool skip_end_space)
{
if (!part_key)
return charset_info->coll->strnncollsp(charset_info, a, a_length,
b, b_length,
(my_bool)!skip_end_space);
return charset_info->coll->strnncoll(charset_info, a, a_length,
b, b_length, part_key);
}
static int compare_bin(const uchar *a, uint a_length,
const uchar *b, uint b_length,
my_bool part_key, my_bool skip_end_space)
{
uint length= min(a_length,b_length);
const uchar *end= a+ length;
int flag;
while (a < end)
if ((flag= (int) *a++ - (int) *b++))
return flag;
if (part_key && b_length < a_length)
return 0;
if (skip_end_space && a_length != b_length)
{
int swap= 1;
/*
We are using space compression. We have to check if longer key
has next character < ' ', in which case it's less than the shorter
key that has an implicite space afterwards.
This code is identical to the one in
strings/ctype-simple.c:my_strnncollsp_simple
*/
if (a_length < b_length)
{
/* put shorter key in a */
a_length= b_length;
a= b;
swap= -1; /* swap sign of result */
}
for (end= a + a_length-length; a < end ; a++)
{
if (*a != ' ')
return (*a < ' ') ? -swap : swap;
}
return 0;
}
return (int) (a_length-b_length);
}
/*
Compare two keys
SYNOPSIS
ha_key_cmp()
keyseg Array of key segments of key to compare
a First key to compare, in format from _mi_pack_key()
This is normally key specified by user
b Second key to compare. This is always from a row
key_length Length of key to compare. This can be shorter than
a to just compare sub keys
next_flag How keys should be compared
If bit SEARCH_FIND is not set the keys includes the row
position and this should also be compared
diff_pos OUT Number of first keypart where values differ, counting
from one.
diff_pos[1] OUT (b + diff_pos[1]) points to first value in tuple b
that is different from corresponding value in tuple a.
EXAMPLES
Example1: if the function is called for tuples
('aaa','bbb') and ('eee','fff'), then
diff_pos[0] = 1 (as 'aaa' != 'eee')
diff_pos[1] = 0 (offset from beggining of tuple b to 'eee' keypart).
Example2: if the index function is called for tuples
('aaa','bbb') and ('aaa','fff'),
diff_pos[0] = 2 (as 'aaa' != 'eee')
diff_pos[1] = 3 (offset from beggining of tuple b to 'fff' keypart,
here we assume that first key part is CHAR(3) NOT NULL)
NOTES
Number-keys can't be splited
RETURN VALUES
<0 If a < b
0 If a == b
>0 If a > b
*/
#define FCMP(A,B) ((int) (A) - (int) (B))
int ha_key_cmp(register HA_KEYSEG *keyseg, register const uchar *a,
register const uchar *b, uint key_length, uint nextflag,
uint *diff_pos)
{
int flag;
int16 s_1,s_2;
int32 l_1,l_2;
uint32 u_1,u_2;
float f_1,f_2;
double d_1,d_2;
uint next_key_length;
const uchar *orig_b= b;
*diff_pos=0;
for ( ; (int) key_length >0 ; key_length=next_key_length, keyseg++)
{
const uchar *end;
uint piks=! (keyseg->flag & HA_NO_SORT);
(*diff_pos)++;
diff_pos[1]= (uint)(b - orig_b);
/* Handle NULL part */
if (keyseg->null_bit)
{
key_length--;
if (*a != *b && piks)
{
flag = (int) *a - (int) *b;
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
}
b++;
if (!*a++) /* If key was NULL */
{
if (nextflag == (SEARCH_FIND | SEARCH_UPDATE))
nextflag=SEARCH_SAME; /* Allow duplicate keys */
else if (nextflag & SEARCH_NULL_ARE_NOT_EQUAL)
{
/*
This is only used from mi_check() to calculate cardinality.
It can't be used when searching for a key as this would cause
compare of (a,b) and (b,a) to return the same value.
*/
return -1;
}
next_key_length=key_length;
continue; /* To next key part */
}
}
end= a+ min(keyseg->length,key_length);
next_key_length=key_length-keyseg->length;
switch ((enum ha_base_keytype) keyseg->type) {
case HA_KEYTYPE_TEXT: /* Ascii; Key is converted */
if (keyseg->flag & HA_SPACE_PACK)
{
int a_length,b_length,pack_length;
get_key_length(a_length,a);
get_key_pack_length(b_length,pack_length,b);
next_key_length=key_length-b_length-pack_length;
if (piks &&
(flag=ha_compare_text(keyseg->charset,a,a_length,b,b_length,
(my_bool) ((nextflag & SEARCH_PREFIX) &&
next_key_length <= 0),
(my_bool)!(nextflag & SEARCH_PREFIX))))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a+=a_length;
b+=b_length;
break;
}
else
{
uint length=(uint) (end-a), a_length=length, b_length=length;
if (piks &&
(flag= ha_compare_text(keyseg->charset, a, a_length, b, b_length,
(my_bool) ((nextflag & SEARCH_PREFIX) &&
next_key_length <= 0),
(my_bool)!(nextflag & SEARCH_PREFIX))))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a=end;
b+=length;
}
break;
case HA_KEYTYPE_BINARY:
case HA_KEYTYPE_BIT:
if (keyseg->flag & HA_SPACE_PACK)
{
int a_length,b_length,pack_length;
get_key_length(a_length,a);
get_key_pack_length(b_length,pack_length,b);
next_key_length=key_length-b_length-pack_length;
if (piks &&
(flag=compare_bin(a,a_length,b,b_length,
(my_bool) ((nextflag & SEARCH_PREFIX) &&
next_key_length <= 0),1)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a+=a_length;
b+=b_length;
break;
}
else
{
uint length=keyseg->length;
if (piks &&
(flag=compare_bin(a,length,b,length,
(my_bool) ((nextflag & SEARCH_PREFIX) &&
next_key_length <= 0),0)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a+=length;
b+=length;
}
break;
case HA_KEYTYPE_VARTEXT1:
case HA_KEYTYPE_VARTEXT2:
{
int a_length,b_length,pack_length;
get_key_length(a_length,a);
get_key_pack_length(b_length,pack_length,b);
next_key_length=key_length-b_length-pack_length;
if (piks &&
(flag= ha_compare_text(keyseg->charset,a,a_length,b,b_length,
(my_bool) ((nextflag & SEARCH_PREFIX) &&
next_key_length <= 0),
(my_bool) ((nextflag & (SEARCH_FIND |
SEARCH_UPDATE)) ==
SEARCH_FIND &&
! (keyseg->flag &
HA_END_SPACE_ARE_EQUAL)))))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a+= a_length;
b+= b_length;
break;
}
break;
case HA_KEYTYPE_VARBINARY1:
case HA_KEYTYPE_VARBINARY2:
{
int a_length,b_length,pack_length;
get_key_length(a_length,a);
get_key_pack_length(b_length,pack_length,b);
next_key_length=key_length-b_length-pack_length;
if (piks &&
(flag=compare_bin(a,a_length,b,b_length,
(my_bool) ((nextflag & SEARCH_PREFIX) &&
next_key_length <= 0), 0)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a+=a_length;
b+=b_length;
break;
}
break;
case HA_KEYTYPE_INT8:
{
int i_1= (int) *((signed char*) a);
int i_2= (int) *((signed char*) b);
if (piks && (flag = CMP_NUM(i_1,i_2)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b++;
break;
}
case HA_KEYTYPE_SHORT_INT:
s_1= mi_sint2korr(a);
s_2= mi_sint2korr(b);
if (piks && (flag = CMP_NUM(s_1,s_2)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+= 2; /* sizeof(short int); */
break;
case HA_KEYTYPE_USHORT_INT:
{
uint16 us_1,us_2;
us_1= mi_sint2korr(a);
us_2= mi_sint2korr(b);
if (piks && (flag = CMP_NUM(us_1,us_2)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+=2; /* sizeof(short int); */
break;
}
case HA_KEYTYPE_LONG_INT:
l_1= mi_sint4korr(a);
l_2= mi_sint4korr(b);
if (piks && (flag = CMP_NUM(l_1,l_2)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+= 4; /* sizeof(long int); */
break;
case HA_KEYTYPE_ULONG_INT:
u_1= mi_sint4korr(a);
u_2= mi_sint4korr(b);
if (piks && (flag = CMP_NUM(u_1,u_2)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+= 4; /* sizeof(long int); */
break;
case HA_KEYTYPE_INT24:
l_1=mi_sint3korr(a);
l_2=mi_sint3korr(b);
if (piks && (flag = CMP_NUM(l_1,l_2)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+= 3;
break;
case HA_KEYTYPE_UINT24:
l_1=mi_uint3korr(a);
l_2=mi_uint3korr(b);
if (piks && (flag = CMP_NUM(l_1,l_2)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+= 3;
break;
case HA_KEYTYPE_FLOAT:
mi_float4get(f_1,a);
mi_float4get(f_2,b);
/*
The following may give a compiler warning about floating point
comparison not being safe, but this is ok in this context as
we are bascily doing sorting
*/
if (piks && (flag = CMP_NUM(f_1,f_2)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+= 4; /* sizeof(float); */
break;
case HA_KEYTYPE_DOUBLE:
mi_float8get(d_1,a);
mi_float8get(d_2,b);
/*
The following may give a compiler warning about floating point
comparison not being safe, but this is ok in this context as
we are bascily doing sorting
*/
if (piks && (flag = CMP_NUM(d_1,d_2)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+= 8; /* sizeof(double); */
break;
case HA_KEYTYPE_NUM: /* Numeric key */
{
int swap_flag= 0;
int alength,blength;
if (keyseg->flag & HA_REVERSE_SORT)
{
swap_variables(const uchar*, a, b);
swap_flag=1; /* Remember swap of a & b */
end= a+ (int) (end-b);
}
if (keyseg->flag & HA_SPACE_PACK)
{
alength= *a++; blength= *b++;
end=a+alength;
next_key_length=key_length-blength-1;
}
else
{
alength= (int) (end-a);
blength=keyseg->length;
/* remove pre space from keys */
for ( ; alength && *a == ' ' ; a++, alength--) ;
for ( ; blength && *b == ' ' ; b++, blength--) ;
}
if (piks)
{
if (*a == '-')
{
if (*b != '-')
return -1;
a++; b++;
swap_variables(const uchar*, a, b);
swap_variables(int, alength, blength);
swap_flag=1-swap_flag;
alength--; blength--;
end=a+alength;
}
else if (*b == '-')
return 1;
while (alength && (*a == '+' || *a == '0'))
{
a++; alength--;
}
while (blength && (*b == '+' || *b == '0'))
{
b++; blength--;
}
if (alength != blength)
return (alength < blength) ? -1 : 1;
while (a < end)
if (*a++ != *b++)
return ((int) a[-1] - (int) b[-1]);
}
else
{
b+=(end-a);
a=end;
}
if (swap_flag) /* Restore pointers */
swap_variables(const uchar*, a, b);
break;
}
#ifdef HAVE_LONG_LONG
case HA_KEYTYPE_LONGLONG:
{
longlong ll_a,ll_b;
ll_a= mi_sint8korr(a);
ll_b= mi_sint8korr(b);
if (piks && (flag = CMP_NUM(ll_a,ll_b)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+= 8;
break;
}
case HA_KEYTYPE_ULONGLONG:
{
ulonglong ll_a,ll_b;
ll_a= mi_uint8korr(a);
ll_b= mi_uint8korr(b);
if (piks && (flag = CMP_NUM(ll_a,ll_b)))
return ((keyseg->flag & HA_REVERSE_SORT) ? -flag : flag);
a= end;
b+= 8;
break;
}
#endif
case HA_KEYTYPE_END: /* Ready */
goto end; /* diff_pos is incremented */
}
}
(*diff_pos)++;
end:
if (!(nextflag & SEARCH_FIND))
{
uint i;
if (nextflag & (SEARCH_NO_FIND | SEARCH_LAST)) /* Find record after key */
return (nextflag & (SEARCH_BIGGER | SEARCH_LAST)) ? -1 : 1;
flag=0;
for (i=keyseg->length ; i-- > 0 ; )
{
if (*a++ != *b++)
{
flag= FCMP(a[-1],b[-1]);
break;
}
}
if (nextflag & SEARCH_SAME)
return (flag); /* read same */
if (nextflag & SEARCH_BIGGER)
return (flag <= 0 ? -1 : 1); /* read next */
return (flag < 0 ? -1 : 1); /* read previous */
}
return 0;
} /* ha_key_cmp */
/*
Find the first NULL value in index-suffix values tuple
SYNOPSIS
ha_find_null()
keyseg Array of keyparts for key suffix
a Key suffix value tuple
DESCRIPTION
Find the first NULL value in index-suffix values tuple.
TODO
Consider optimizing this function or its use so we don't search for
NULL values in completely NOT NULL index suffixes.
RETURN
First key part that has NULL as value in values tuple, or the last key
part (with keyseg->type==HA_TYPE_END) if values tuple doesn't contain
NULLs.
*/
HA_KEYSEG *ha_find_null(HA_KEYSEG *keyseg, uchar *a)
{
for (; (enum ha_base_keytype) keyseg->type != HA_KEYTYPE_END; keyseg++)
{
uchar *end;
if (keyseg->null_bit)
{
if (!*a++)
return keyseg;
}
end= a+ keyseg->length;
switch ((enum ha_base_keytype) keyseg->type) {
case HA_KEYTYPE_TEXT:
case HA_KEYTYPE_BINARY:
case HA_KEYTYPE_BIT:
if (keyseg->flag & HA_SPACE_PACK)
{
int a_length;
get_key_length(a_length, a);
a += a_length;
break;
}
else
a= end;
break;
case HA_KEYTYPE_VARTEXT1:
case HA_KEYTYPE_VARTEXT2:
case HA_KEYTYPE_VARBINARY1:
case HA_KEYTYPE_VARBINARY2:
{
int a_length;
get_key_length(a_length, a);
a+= a_length;
break;
}
case HA_KEYTYPE_NUM:
if (keyseg->flag & HA_SPACE_PACK)
{
int alength= *a++;
end= a+alength;
}
a= end;
break;
case HA_KEYTYPE_INT8:
case HA_KEYTYPE_SHORT_INT:
case HA_KEYTYPE_USHORT_INT:
case HA_KEYTYPE_LONG_INT:
case HA_KEYTYPE_ULONG_INT:
case HA_KEYTYPE_INT24:
case HA_KEYTYPE_UINT24:
#ifdef HAVE_LONG_LONG
case HA_KEYTYPE_LONGLONG:
case HA_KEYTYPE_ULONGLONG:
#endif
case HA_KEYTYPE_FLOAT:
case HA_KEYTYPE_DOUBLE:
a= end;
break;
case HA_KEYTYPE_END: /* purecov: inspected */
/* keep compiler happy */
DBUG_ASSERT(0);
break;
}
}
return keyseg;
}
/*
Errors a handler can give you
*/
static const char *handler_error_messages[]=
{
"Didn't find key on read or update",
"Duplicate key on write or update",
"Internal (unspecified) error in handler",
"Someone has changed the row since it was read (while the table was locked to prevent it)",
"Wrong index given to function",
"Undefined handler error 125",
"Index file is crashed",
"Record file is crashed",
"Out of memory in engine",
"Undefined handler error 129",
"Incorrect file format",
"Command not supported by database",
"Old database file",
"No record read before update",
"Record was already deleted (or record file crashed)",
"No more room in record file",
"No more room in index file",
"No more records (read after end of file)",
"Unsupported extension used for table",
"Too big row",
"Wrong create options",
"Duplicate unique key or constraint on write or update",
"Unknown character set used in table",
"Conflicting table definitions in sub-tables of MERGE table",
"Table is crashed and last repair failed",
"Table was marked as crashed and should be repaired",
"Lock timed out; Retry transaction",
"Lock table is full; Restart program with a larger locktable",
"Updates are not allowed under a read only transactions",
"Lock deadlock; Retry transaction",
"Foreign key constraint is incorrectly formed",
"Cannot add a child row",
"Cannot delete a parent row",
"No savepoint with that name",
"Non unique key block size",
"The table does not exist in engine",
"The table already existed in storage engine",
"Could not connect to storage engine",
"Unexpected null pointer found when using spatial index",
"The table changed in storage engine",
"There's no partition in table for the given value",
"Row-based binlogging of row failed",
"Index needed in foreign key constraint",
"Upholding foreign key constraints would lead to a duplicate key error in "
"some other table",
"Table needs to be upgraded before it can be used",
"Table is read only",
"Failed to get next auto increment value",
"Failed to set row auto increment value",
"Unknown (generic) error from engine",
"Record is the same",
"It is not possible to log this statement",
"The table is of a new format not supported by this version",
"Got a fatal error during initialzaction of handler",
"File to short; Expected more data in file",
"Read page with wrong checksum"
};
/*
Register handler error messages for usage with my_error()
NOTES
This is safe to call multiple times as my_error_register()
will ignore calls to register already registered error numbers.
*/
void my_handler_error_register(void)
{
my_error_register(handler_error_messages, HA_ERR_FIRST,
HA_ERR_FIRST+ array_elements(handler_error_messages)-1);
}
void my_handler_error_unregister(void)
{
my_error_unregister(HA_ERR_FIRST,
HA_ERR_FIRST+ array_elements(handler_error_messages)-1);
}