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Bug#31177: Server variables can't be set to their current values

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Default values of variables were not subject to upper/lower bounds
and step, while setting variables was. Bounds and step are also
applied to defaults now; defaults are corrected quietly, values
given by the user are corrected, and a correction-warning is thrown
as needed. Lastly, very large values could wrap around, starting
from 0 again. They are bounded at the maximum value for the
respective data-type now if no lower maximum is specified in the
variable's definition.
This commit is contained in:
tnurnberg@mysql.com/white.intern.koehntopp.de
2007-11-30 06:32:04 +01:00
parent 6b92ec4acb
commit 31d4e58ad4
21 changed files with 307 additions and 121 deletions
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13
client/mysql.cc
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@ -737,9 +737,9 @@ static struct my_option my_long_options[] =
0, 1},
{"max_allowed_packet", OPT_MAX_ALLOWED_PACKET,
"Max packet length to send to, or receive from server",
(gptr*) &opt_max_allowed_packet, (gptr*) &opt_max_allowed_packet, 0, GET_ULONG,
REQUIRED_ARG, 16 *1024L*1024L, 4096, (longlong) 2*1024L*1024L*1024L,
MALLOC_OVERHEAD, 1024, 0},
(gptr*) &opt_max_allowed_packet, (gptr*) &opt_max_allowed_packet, 0,
GET_ULONG, REQUIRED_ARG, 16 *1024L*1024L, 4096,
(longlong) 2*1024L*1024L*1024L, MALLOC_OVERHEAD, 1024, 0},
{"net_buffer_length", OPT_NET_BUFFER_LENGTH,
"Buffer for TCP/IP and socket communication",
(gptr*) &opt_net_buffer_length, (gptr*) &opt_net_buffer_length, 0, GET_ULONG,
@ -747,12 +747,13 @@ static struct my_option my_long_options[] =
{"select_limit", OPT_SELECT_LIMIT,
"Automatic limit for SELECT when using --safe-updates",
(gptr*) &select_limit,
(gptr*) &select_limit, 0, GET_ULONG, REQUIRED_ARG, 1000L, 1, ~0L, 0, 1, 0},
(gptr*) &select_limit, 0, GET_ULONG, REQUIRED_ARG, 1000L, 1, ULONG_MAX,
0, 1, 0},
{"max_join_size", OPT_MAX_JOIN_SIZE,
"Automatic limit for rows in a join when using --safe-updates",
(gptr*) &max_join_size,
(gptr*) &max_join_size, 0, GET_ULONG, REQUIRED_ARG, 1000000L, 1, ~0L, 0, 1,
0},
(gptr*) &max_join_size, 0, GET_ULONG, REQUIRED_ARG, 1000000L, 1, ULONG_MAX,
0, 1, 0},
{"secure-auth", OPT_SECURE_AUTH, "Refuse client connecting to server if it"
" uses old (pre-4.1.1) protocol", (gptr*) &opt_secure_auth,
(gptr*) &opt_secure_auth, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},