/usr/include/mysql/private/my_compare.h is in libmariadbclient-dev 1:10.1.29-6.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | /* Copyright (c) 2011, Oracle and/or its affiliates.
Copyright (c) Monty Program Ab; 1991-2011
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
#ifndef _my_compare_h
#define _my_compare_h
#include "myisampack.h"
#ifdef __cplusplus
extern "C" {
#endif
#include "m_ctype.h" /* CHARSET_INFO */
/*
There is a hard limit for the maximum number of keys as there are only
8 bits in the index file header for the number of keys in a table.
This means that 0..255 keys can exist for a table. The idea of
HA_MAX_POSSIBLE_KEY is to ensure that one can use myisamchk & tools on
a MyISAM table for which one has more keys than MyISAM is normally
compiled for. If you don't have this, you will get a core dump when
running myisamchk compiled for 128 keys on a table with 255 keys.
*/
#define HA_MAX_POSSIBLE_KEY 255 /* For myisamchk */
/*
The following defines can be increased if necessary.
But beware the dependency of MI_MAX_POSSIBLE_KEY_BUFF and HA_MAX_KEY_LENGTH.
*/
#define HA_MAX_KEY_LENGTH 1000 /* Max length in bytes */
#define HA_MAX_KEY_SEG 32 /* Max segments for key */
#define HA_MAX_POSSIBLE_KEY_BUFF (HA_MAX_KEY_LENGTH + 24+ 6+6)
#define HA_MAX_KEY_BUFF (HA_MAX_KEY_LENGTH+HA_MAX_KEY_SEG*6+8+8)
typedef struct st_HA_KEYSEG /* Key-portion */
{
CHARSET_INFO *charset;
uint32 start; /* Start of key in record */
uint32 null_pos; /* position to NULL indicator */
uint16 bit_pos; /* Position to bit part */
uint16 flag;
uint16 length; /* Keylength */
uint16 language;
uint8 type; /* Type of key (for sort) */
uint8 null_bit; /* bitmask to test for NULL */
uint8 bit_start;
uint8 bit_length; /* Length of bit part */
} HA_KEYSEG;
#define get_key_length(length,key) \
{ if (*(const uchar*) (key) != 255) \
length= (uint) *(const uchar*) ((key)++); \
else \
{ length= mi_uint2korr((key)+1); (key)+=3; } \
}
#define get_key_length_rdonly(length,key) \
{ if (*(const uchar*) (key) != 255) \
length= ((uint) *(const uchar*) ((key))); \
else \
{ length= mi_uint2korr((key)+1); } \
}
#define get_key_pack_length(length,length_pack,key) \
{ if (*(const uchar*) (key) != 255) \
{ length= (uint) *(const uchar*) ((key)++); length_pack= 1; }\
else \
{ length=mi_uint2korr((key)+1); (key)+= 3; length_pack= 3; } \
}
#define store_key_length_inc(key,length) \
{ if ((length) < 255) \
{ *(key)++= (length); } \
else \
{ *(key)=255; mi_int2store((key)+1,(length)); (key)+=3; } \
}
#define size_to_store_key_length(length) ((length) < 255 ? 1 : 3)
#define get_rec_bits(bit_ptr, bit_ofs, bit_len) \
(((((uint16) (bit_ptr)[1] << 8) | (uint16) (bit_ptr)[0]) >> (bit_ofs)) & \
((1 << (bit_len)) - 1))
#define set_rec_bits(bits, bit_ptr, bit_ofs, bit_len) \
{ \
(bit_ptr)[0]= ((bit_ptr)[0] & ~(((1 << (bit_len)) - 1) << (bit_ofs))) | \
((bits) << (bit_ofs)); \
if ((bit_ofs) + (bit_len) > 8) \
(bit_ptr)[1]= ((bit_ptr)[1] & ~((1 << ((bit_len) - 8 + (bit_ofs))) - 1)) | \
((bits) >> (8 - (bit_ofs))); \
}
#define clr_rec_bits(bit_ptr, bit_ofs, bit_len) \
set_rec_bits(0, bit_ptr, bit_ofs, bit_len)
extern int ha_compare_text(CHARSET_INFO *, const uchar *, uint,
const uchar *, uint , my_bool, my_bool);
extern int ha_key_cmp(HA_KEYSEG *keyseg, const uchar *a,
const uchar *b, uint key_length, uint nextflag,
uint *diff_pos);
extern HA_KEYSEG *ha_find_null(HA_KEYSEG *keyseg, const uchar *a);
/*
Inside an in-memory data record, memory pointers to pieces of the
record (like BLOBs) are stored in their native byte order and in
this amount of bytes.
*/
#define portable_sizeof_char_ptr 8
#ifdef __cplusplus
}
#endif
/**
Return values of index_cond_func_xxx functions.
0=ICP_NO_MATCH - index tuple doesn't satisfy the pushed index condition (the
engine should discard the tuple and go to the next one)
1=ICP_MATCH - index tuple satisfies the pushed index condition (the
engine should fetch and return the record)
2=ICP_OUT_OF_RANGE - index tuple is out range that we're scanning, e.g. this
if we're scanning "t.key BETWEEN 10 AND 20" and got a
"t.key=21" tuple (the engine should stop scanning and
return HA_ERR_END_OF_FILE right away).
3=ICP_ABORTED_BY_USER - engine must stop scanning and should return
HA_ERR_ABORTED_BY_USER right away
-1= ICP_ERROR - Reserved for internal errors in engines. Should not be
returned by index_cond_func_xxx
*/
typedef enum icp_result {
ICP_ERROR=-1,
ICP_NO_MATCH=0,
ICP_MATCH=1,
ICP_OUT_OF_RANGE=2,
ICP_ABORTED_BY_USER=3
} ICP_RESULT;
typedef ICP_RESULT (*index_cond_func_t)(void *param);
#endif /* _my_compare_h */
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