/usr/include/mysql/private/wsrep_utils.h is in libmariadbclient-dev 1:10.1.29-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 | /* Copyright (C) 2013-2015 Codership Oy <info@codership.com>
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 WSREP_UTILS_H
#define WSREP_UTILS_H
#include "wsrep_priv.h"
#include "wsrep_mysqld.h"
unsigned int wsrep_check_ip (const char* const addr, bool *is_ipv6);
size_t wsrep_guess_ip (char* buf, size_t buf_len);
/* returns the length of the host part of the address string */
size_t wsrep_host_len(const char* addr, size_t addr_len);
namespace wsp {
class Address {
public:
Address()
: m_address_len(0), m_family(UNSPEC), m_port(0), m_valid(false)
{
memset(m_address, 0, sizeof(m_address));
}
Address(const char *addr_in)
: m_address_len(0), m_family(UNSPEC), m_port(0), m_valid(false)
{
memset(m_address, 0, sizeof(m_address));
parse_addr(addr_in);
}
bool is_valid() { return m_valid; }
bool is_ipv6() { return (m_family == INET6); }
const char* get_address() { return m_address; }
size_t get_address_len() { return m_address_len; }
int get_port() { return m_port; }
private:
enum family {
UNSPEC= 0,
INET, /* IPv4 */
INET6, /* IPv6 */
};
char m_address[256];
size_t m_address_len;
family m_family;
int m_port;
bool m_valid;
void parse_addr(const char *addr_in) {
const char *start;
const char *end;
const char *port;
const char* open_bracket= strchr(const_cast<char *>(addr_in), '[');
const char* close_bracket= strchr(const_cast<char *>(addr_in), ']');
const char* colon= strchr(const_cast<char *>(addr_in), ':');
const char* dot= strchr(const_cast<char *>(addr_in), '.');
int cc= colon_count(addr_in);
if (open_bracket != NULL ||
dot == NULL ||
(colon != NULL && (dot == NULL || colon < dot)))
{
// This could be an IPv6 address or a hostname
if (open_bracket != NULL) {
/* Sanity check: Address with '[' must include ']' */
if (close_bracket == NULL &&
open_bracket < close_bracket) /* Error: malformed address */
{
m_valid= false;
return;
}
start= open_bracket + 1;
end= close_bracket;
/* Check for port */
port= strchr(close_bracket, ':');
if ((port != NULL) && parse_port(port + 1))
{
return; /* Error: invalid port */
}
m_family= INET6;
}
else
{
switch (cc) {
case 0:
/* Hostname with no port */
start= addr_in;
end= addr_in + strlen(addr_in);
break;
case 1:
/* Hostname with port (host:port) */
start= addr_in;
end= colon;
parse_port(colon + 1);
break;
default:
/* IPv6 address */
start= addr_in;
end= addr_in + strlen(addr_in);
m_family= INET6;
break;
}
}
} else { /* IPv4 address or hostname */
start= addr_in;
if (colon != NULL) { /* Port */
end= colon;
if (parse_port(colon + 1))
return; /* Error: invalid port */
} else {
end= addr_in + strlen(addr_in);
}
}
size_t len= end - start;
/* Safety */
if (len >= sizeof(m_address))
{
// The supplied address is too large to fit into the internal buffer.
m_valid= false;
return;
}
memcpy(m_address, start, len);
m_address[len]= '\0';
m_address_len= ++ len;
m_valid= true;
return;
}
int colon_count(const char *addr) {
int count= 0, i= 0;
while(addr[i] != '\0')
{
if (addr[i] == ':') ++count;
++ i;
}
return count;
}
bool parse_port(const char *port) {
errno= 0; /* Reset the errno */
m_port= strtol(port, NULL, 10);
if (errno == EINVAL || errno == ERANGE)
{
m_port= 0; /* Error: invalid port */
m_valid= false;
return true;
}
return false;
}
};
class Config_state
{
public:
Config_state() : view_(), status_(WSREP_MEMBER_UNDEFINED)
{}
void set(wsrep_member_status_t status, const wsrep_view_info_t* view)
{
wsrep_notify_status(status, view);
lock();
status_= status;
view_= *view;
member_info_.clear();
wsrep_member_info_t memb;
for(int i= 0; i < view->memb_num; i ++)
{
memb= view->members[i];
member_info_.append_val(memb);
}
unlock();
}
void set(wsrep_member_status_t status)
{
wsrep_notify_status(status, 0);
lock();
status_= status;
unlock();
}
wsrep_view_info_t get_view_info() const
{
return view_;
}
wsrep_member_status_t get_status() const
{
return status_;
}
Dynamic_array<wsrep_member_info_t> * get_member_info()
{
return &member_info_;
}
int lock()
{
return mysql_mutex_lock(&LOCK_wsrep_config_state);
}
int unlock()
{
return mysql_mutex_unlock(&LOCK_wsrep_config_state);
}
private:
wsrep_view_info_t view_;
wsrep_member_status_t status_;
Dynamic_array<wsrep_member_info_t> member_info_;
};
} /* namespace wsp */
extern wsp::Config_state wsrep_config_state;
namespace wsp {
/* a class to manage env vars array */
class env
{
private:
size_t len_;
char** env_;
int errno_;
bool ctor_common(char** e);
void dtor();
env& operator =(env);
public:
explicit env(char** env);
explicit env(const env&);
~env();
int append(const char* var); /* add a new env. var */
int error() const { return errno_; }
char** operator()() { return env_; }
};
/* A small class to run external programs. */
class process
{
private:
const char* const str_;
FILE* io_;
int err_;
pid_t pid_;
public:
/*! @arg type is a pointer to a null-terminated string which must contain
either the letter 'r' for reading or the letter 'w' for writing.
@arg env optional null-terminated vector of environment variables
*/
process (const char* cmd, const char* type, char** env);
~process ();
FILE* pipe () { return io_; }
int error() { return err_; }
int wait ();
const char* cmd() { return str_; }
};
class thd
{
class thd_init
{
public:
thd_init() { my_thread_init(); }
~thd_init() { my_thread_end(); }
}
init;
thd (const thd&);
thd& operator= (const thd&);
public:
thd(my_bool wsrep_on);
~thd();
THD* const ptr;
};
class string
{
public:
string() : string_(0) {}
explicit string(size_t s) : string_(static_cast<char*>(malloc(s))) {}
char* operator()() { return string_; }
void set(char* str) { if (string_) free (string_); string_ = str; }
~string() { set (0); }
private:
char* string_;
};
#ifdef REMOVED
class lock
{
pthread_mutex_t* const mtx_;
public:
lock (pthread_mutex_t* mtx) : mtx_(mtx)
{
int err = pthread_mutex_lock (mtx_);
if (err)
{
WSREP_ERROR("Mutex lock failed: %s", strerror(err));
abort();
}
}
virtual ~lock ()
{
int err = pthread_mutex_unlock (mtx_);
if (err)
{
WSREP_ERROR("Mutex unlock failed: %s", strerror(err));
abort();
}
}
inline void wait (pthread_cond_t* cond)
{
pthread_cond_wait (cond, mtx_);
}
private:
lock (const lock&);
lock& operator=(const lock&);
};
class monitor
{
int mutable refcnt;
pthread_mutex_t mutable mtx;
pthread_cond_t mutable cond;
public:
monitor() : refcnt(0)
{
pthread_mutex_init (&mtx, NULL);
pthread_cond_init (&cond, NULL);
}
~monitor()
{
pthread_mutex_destroy (&mtx);
pthread_cond_destroy (&cond);
}
void enter() const
{
lock l(&mtx);
while (refcnt)
{
l.wait(&cond);
}
refcnt++;
}
void leave() const
{
lock l(&mtx);
refcnt--;
if (refcnt == 0)
{
pthread_cond_signal (&cond);
}
}
private:
monitor (const monitor&);
monitor& operator= (const monitor&);
};
class critical
{
const monitor& mon;
public:
critical(const monitor& m) : mon(m) { mon.enter(); }
~critical() { mon.leave(); }
private:
critical (const critical&);
critical& operator= (const critical&);
};
#endif
} // namespace wsrep
#endif /* WSREP_UTILS_H */
|