Copyright (C) Andrew Tridgell 2006
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
+ 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; either version 3 of the License, or
+ (at your option) any later version.
+
+ 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser 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
+ 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-#include "lib/events/events.h"
+#include "lib/tevent/tevent.h"
#include "lib/tdb/include/tdb.h"
#include "system/network.h"
#include "system/filesys.h"
+#include "system/wait.h"
+#include "system/shmem.h"
#include "../include/ctdb_private.h"
-int LogLevel;
+int LogLevel = DEBUG_NOTICE;
+int this_log_level = 0;
/*
return error string for last error
talloc_free(ctdb->err_msg);
va_start(ap, fmt);
ctdb->err_msg = talloc_vasprintf(ctdb, fmt, ap);
- DEBUG(0,("ctdb error: %s\n", ctdb->err_msg));
+ DEBUG(DEBUG_ERR,("ctdb error: %s\n", ctdb->err_msg));
va_end(ap);
}
*/
void ctdb_fatal(struct ctdb_context *ctdb, const char *msg)
{
- DEBUG(0,("ctdb fatal error: %s\n", msg));
+ DEBUG(DEBUG_ALERT,("ctdb fatal error: %s\n", msg));
abort();
}
TALLOC_CTX *mem_ctx, const char *str,
struct ctdb_address *address)
{
- char *p;
- p = strchr(str, ':');
- if (p == NULL) {
- ctdb_set_error(ctdb, "Badly formed node '%s'\n", str);
- return -1;
- }
+ struct servent *se;
+
+ setservent(0);
+ se = getservbyname("ctdb", "tcp");
+ endservent();
- address->address = talloc_strndup(mem_ctx, str, p-str);
- address->port = strtoul(p+1, NULL, 0);
+ address->address = talloc_strdup(mem_ctx, str);
+ CTDB_NO_MEMORY(ctdb, address->address);
+
+ if (se == NULL) {
+ address->port = CTDB_PORT;
+ } else {
+ address->port = ntohs(se->s_port);
+ }
return 0;
}
*/
uint32_t ctdb_hash(const TDB_DATA *key)
{
- uint32_t value; /* Used to compute the hash value. */
- uint32_t i; /* Used to cycle through random values. */
-
- /* Set the initial value from the key size. */
- for (value = 0x238F13AF * key->dsize, i=0; i < key->dsize; i++)
- value = (value + (key->dptr[i] << (i*5 % 24)));
-
- return (1103515243 * value + 12345);
-}
-
-/*
- hash function for a string
-*/
-uint32_t ctdb_hash_string(const char *str)
-{
- TDB_DATA data;
- data.dptr = (uint8_t *)discard_const(str);
- data.dsize = strlen(str)+1;
- return ctdb_hash(&data);
+ return tdb_jenkins_hash(discard_const(key));
}
/*
{
void *p = idr_find(idp, id);
if (p && talloc_check_name(p, type) == NULL) {
- DEBUG(0,("%s idr_find_type expected type %s but got %s\n",
+ DEBUG(DEBUG_ERR,("%s idr_find_type expected type %s but got %s\n",
location, type, talloc_get_name(p)));
return NULL;
}
return p;
}
-
-/*
- update a max latency number
- */
-void ctdb_latency(double *latency, struct timeval t)
-{
- double l = timeval_elapsed(&t);
- if (l > *latency) {
- *latency = l;
- }
-}
-
uint32_t ctdb_reqid_new(struct ctdb_context *ctdb, void *state)
{
- uint32_t id;
-
- id = ctdb->idr_cnt++ & 0xFFFF;
- id |= (idr_get_new(ctdb->idr, state, 0xFFFF)<<16);
+ int id = idr_get_new_above(ctdb->idr, state, ctdb->lastid+1, INT_MAX);
+ if (id < 0) {
+ DEBUG(DEBUG_DEBUG, ("Reqid wrap!\n"));
+ id = idr_get_new(ctdb->idr, state, INT_MAX);
+ }
+ ctdb->lastid = id;
return id;
}
{
void *p;
- p = _idr_find_type(ctdb->idr, (reqid>>16)&0xFFFF, type, location);
+ p = _idr_find_type(ctdb->idr, reqid, type, location);
if (p == NULL) {
- DEBUG(0, ("Could not find idr:%u\n",reqid));
+ DEBUG(DEBUG_WARNING, ("Could not find idr:%u\n",reqid));
}
return p;
{
int ret;
- ret = idr_remove(ctdb->idr, (reqid>>16)&0xFFFF);
+ ret = idr_remove(ctdb->idr, reqid);
if (ret != 0) {
- DEBUG(0, ("Removing idr that does not exist\n"));
+ DEBUG(DEBUG_ERR, ("Removing idr that does not exist\n"));
}
}
/*
form a ctdb_rec_data record from a key/data pair
+
+ note that header may be NULL. If not NULL then it is included in the data portion
+ of the record
*/
-struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid, TDB_DATA key, TDB_DATA data)
+struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid,
+ TDB_DATA key,
+ struct ctdb_ltdb_header *header,
+ TDB_DATA data)
{
size_t length;
struct ctdb_rec_data *d;
- length = offsetof(struct ctdb_rec_data, data) + key.dsize + data.dsize;
+ length = offsetof(struct ctdb_rec_data, data) + key.dsize +
+ data.dsize + (header?sizeof(*header):0);
d = (struct ctdb_rec_data *)talloc_size(mem_ctx, length);
if (d == NULL) {
return NULL;
d->length = length;
d->reqid = reqid;
d->keylen = key.dsize;
- d->datalen = data.dsize;
memcpy(&d->data[0], key.dptr, key.dsize);
- memcpy(&d->data[key.dsize], data.dptr, data.dsize);
+ if (header) {
+ d->datalen = data.dsize + sizeof(*header);
+ memcpy(&d->data[key.dsize], header, sizeof(*header));
+ memcpy(&d->data[key.dsize+sizeof(*header)], data.dptr, data.dsize);
+ } else {
+ d->datalen = data.dsize;
+ memcpy(&d->data[key.dsize], data.dptr, data.dsize);
+ }
return d;
}
+
+/* helper function for marshalling multiple records */
+struct ctdb_marshall_buffer *ctdb_marshall_add(TALLOC_CTX *mem_ctx,
+ struct ctdb_marshall_buffer *m,
+ uint64_t db_id,
+ uint32_t reqid,
+ TDB_DATA key,
+ struct ctdb_ltdb_header *header,
+ TDB_DATA data)
+{
+ struct ctdb_rec_data *r;
+ size_t m_size, r_size;
+ struct ctdb_marshall_buffer *m2;
+
+ r = ctdb_marshall_record(mem_ctx, reqid, key, header, data);
+ if (r == NULL) {
+ talloc_free(m);
+ return NULL;
+ }
+
+ if (m == NULL) {
+ m = talloc_zero_size(mem_ctx, offsetof(struct ctdb_marshall_buffer, data));
+ if (m == NULL) {
+ return NULL;
+ }
+ m->db_id = db_id;
+ }
+
+ m_size = talloc_get_size(m);
+ r_size = talloc_get_size(r);
+
+ m2 = talloc_realloc_size(mem_ctx, m, m_size + r_size);
+ if (m2 == NULL) {
+ talloc_free(m);
+ return NULL;
+ }
+
+ memcpy(m_size + (uint8_t *)m2, r, r_size);
+
+ talloc_free(r);
+
+ m2->count++;
+
+ return m2;
+}
+
+/* we've finished marshalling, return a data blob with the marshalled records */
+TDB_DATA ctdb_marshall_finish(struct ctdb_marshall_buffer *m)
+{
+ TDB_DATA data;
+ data.dptr = (uint8_t *)m;
+ data.dsize = talloc_get_size(m);
+ return data;
+}
+
+/*
+ loop over a marshalling buffer
+
+ - pass r==NULL to start
+ - loop the number of times indicated by m->count
+*/
+struct ctdb_rec_data *ctdb_marshall_loop_next(struct ctdb_marshall_buffer *m, struct ctdb_rec_data *r,
+ uint32_t *reqid,
+ struct ctdb_ltdb_header *header,
+ TDB_DATA *key, TDB_DATA *data)
+{
+ if (r == NULL) {
+ r = (struct ctdb_rec_data *)&m->data[0];
+ } else {
+ r = (struct ctdb_rec_data *)(r->length + (uint8_t *)r);
+ }
+
+ if (reqid != NULL) {
+ *reqid = r->reqid;
+ }
+
+ if (key != NULL) {
+ key->dptr = &r->data[0];
+ key->dsize = r->keylen;
+ }
+ if (data != NULL) {
+ data->dptr = &r->data[r->keylen];
+ data->dsize = r->datalen;
+ if (header != NULL) {
+ data->dptr += sizeof(*header);
+ data->dsize -= sizeof(*header);
+ }
+ }
+
+ if (header != NULL) {
+ if (r->datalen < sizeof(*header)) {
+ return NULL;
+ }
+ *header = *(struct ctdb_ltdb_header *)&r->data[r->keylen];
+ }
+
+ return r;
+}
+
+
#if HAVE_SCHED_H
#include <sched.h>
#endif
/*
if possible, make this task real time
*/
-void ctdb_set_realtime(void)
+void ctdb_set_scheduler(struct ctdb_context *ctdb)
{
-#if HAVE_SCHED_SETSCHEDULER
+#if HAVE_SCHED_SETSCHEDULER
struct sched_param p;
- p.__sched_priority = 1;
+ if (ctdb->saved_scheduler_param == NULL) {
+ ctdb->saved_scheduler_param = talloc_size(ctdb, sizeof(p));
+ }
+
+ if (sched_getparam(0, (struct sched_param *)ctdb->saved_scheduler_param) == -1) {
+ DEBUG(DEBUG_ERR,("Unable to get old scheduler params\n"));
+ return;
+ }
+
+ p = *(struct sched_param *)ctdb->saved_scheduler_param;
+ p.sched_priority = 1;
+
+ if (sched_setscheduler(0, SCHED_FIFO, &p) == -1) {
+ DEBUG(DEBUG_CRIT,("Unable to set scheduler to SCHED_FIFO (%s)\n",
+ strerror(errno)));
+ } else {
+ DEBUG(DEBUG_NOTICE,("Set scheduler to SCHED_FIFO\n"));
+ }
+#endif
+}
+
+/*
+ restore previous scheduler parameters
+ */
+void ctdb_restore_scheduler(struct ctdb_context *ctdb)
+{
+#if HAVE_SCHED_SETSCHEDULER
+ if (ctdb->saved_scheduler_param == NULL) {
+ ctdb_fatal(ctdb, "No saved scheduler parameters\n");
+ }
+ if (sched_setscheduler(0, SCHED_OTHER, (struct sched_param *)ctdb->saved_scheduler_param) == -1) {
+ ctdb_fatal(ctdb, "Unable to restore old scheduler parameters\n");
+ }
+#endif
+}
+
+/*
+ * This function forks a child process and drops the realtime
+ * scheduler for the child process.
+ */
+pid_t ctdb_fork(struct ctdb_context *ctdb)
+{
+ pid_t pid;
+
+ pid = fork();
+ if (pid == 0) {
+ if (ctdb->do_setsched) {
+ ctdb_restore_scheduler(ctdb);
+ }
+ }
+ return pid;
+}
+
+void set_nonblocking(int fd)
+{
+ unsigned v;
+ v = fcntl(fd, F_GETFL, 0);
+ fcntl(fd, F_SETFL, v | O_NONBLOCK);
+}
+
+void set_close_on_exec(int fd)
+{
+ unsigned v;
+ v = fcntl(fd, F_GETFD, 0);
+ fcntl(fd, F_SETFD, v | FD_CLOEXEC);
+}
+
+
+bool parse_ipv4(const char *s, unsigned port, struct sockaddr_in *sin)
+{
+ sin->sin_family = AF_INET;
+ sin->sin_port = htons(port);
+
+ if (inet_pton(AF_INET, s, &sin->sin_addr) != 1) {
+ DEBUG(DEBUG_ERR, (__location__ " Failed to translate %s into sin_addr\n", s));
+ return false;
+ }
+
+ return true;
+}
+
+static bool parse_ipv6(const char *s, const char *ifaces, unsigned port, ctdb_sock_addr *saddr)
+{
+ saddr->ip6.sin6_family = AF_INET6;
+ saddr->ip6.sin6_port = htons(port);
+ saddr->ip6.sin6_flowinfo = 0;
+ saddr->ip6.sin6_scope_id = 0;
+
+ if (inet_pton(AF_INET6, s, &saddr->ip6.sin6_addr) != 1) {
+ DEBUG(DEBUG_ERR, (__location__ " Failed to translate %s into sin6_addr\n", s));
+ return false;
+ }
+
+ if (ifaces && IN6_IS_ADDR_LINKLOCAL(&saddr->ip6.sin6_addr)) {
+ if (strchr(ifaces, ',')) {
+ DEBUG(DEBUG_ERR, (__location__ " Link local address %s "
+ "is specified for multiple ifaces %s\n",
+ s, ifaces));
+ return false;
+ }
+ saddr->ip6.sin6_scope_id = if_nametoindex(ifaces);
+ }
+
+ return true;
+}
+/*
+ parse a ip:port pair
+ */
+bool parse_ip_port(const char *addr, ctdb_sock_addr *saddr)
+{
+ TALLOC_CTX *tmp_ctx = talloc_new(NULL);
+ char *s, *p;
+ unsigned port;
+ char *endp = NULL;
+ bool ret;
+
+ s = talloc_strdup(tmp_ctx, addr);
+ if (s == NULL) {
+ DEBUG(DEBUG_ERR, (__location__ " Failed strdup()\n"));
+ talloc_free(tmp_ctx);
+ return false;
+ }
+
+ p = rindex(s, ':');
+ if (p == NULL) {
+ DEBUG(DEBUG_ERR, (__location__ " This addr: %s does not contain a port number\n", s));
+ talloc_free(tmp_ctx);
+ return false;
+ }
+
+ port = strtoul(p+1, &endp, 10);
+ if (endp == NULL || *endp != 0) {
+ /* trailing garbage */
+ DEBUG(DEBUG_ERR, (__location__ " Trailing garbage after the port in %s\n", s));
+ talloc_free(tmp_ctx);
+ return false;
+ }
+ *p = 0;
+
+
+ /* now is this a ipv4 or ipv6 address ?*/
+ ret = parse_ip(s, NULL, port, saddr);
+
+ talloc_free(tmp_ctx);
+ return ret;
+}
+
+/*
+ parse an ip
+ */
+bool parse_ip(const char *addr, const char *ifaces, unsigned port, ctdb_sock_addr *saddr)
+{
+ char *p;
+ bool ret;
- if (sched_setscheduler(getpid(), SCHED_FIFO, &p) == -1) {
- DEBUG(0,("Unable to set scheduler to SCHED_FIFO (%s)\n", strerror(errno)));
+ /* now is this a ipv4 or ipv6 address ?*/
+ p = index(addr, ':');
+ if (p == NULL) {
+ ret = parse_ipv4(addr, port, &saddr->ip);
} else {
- DEBUG(0,("Set scheduler to SCHED_FIFO\n"));
+ ret = parse_ipv6(addr, ifaces, port, saddr);
+ }
+
+ return ret;
+}
+
+/*
+ parse a ip/mask pair
+ */
+bool parse_ip_mask(const char *str, const char *ifaces, ctdb_sock_addr *addr, unsigned *mask)
+{
+ TALLOC_CTX *tmp_ctx = talloc_new(NULL);
+ char *s, *p;
+ char *endp = NULL;
+ bool ret;
+
+ ZERO_STRUCT(*addr);
+ s = talloc_strdup(tmp_ctx, str);
+ if (s == NULL) {
+ DEBUG(DEBUG_ERR, (__location__ " Failed strdup()\n"));
+ talloc_free(tmp_ctx);
+ return false;
+ }
+
+ p = rindex(s, '/');
+ if (p == NULL) {
+ DEBUG(DEBUG_ERR, (__location__ " This addr: %s does not contain a mask\n", s));
+ talloc_free(tmp_ctx);
+ return false;
+ }
+
+ *mask = strtoul(p+1, &endp, 10);
+ if (endp == NULL || *endp != 0) {
+ /* trailing garbage */
+ DEBUG(DEBUG_ERR, (__location__ " Trailing garbage after the mask in %s\n", s));
+ talloc_free(tmp_ctx);
+ return false;
}
+ *p = 0;
+
+
+ /* now is this a ipv4 or ipv6 address ?*/
+ ret = parse_ip(s, ifaces, 0, addr);
+
+ talloc_free(tmp_ctx);
+ return ret;
+}
+
+/*
+ This is used to canonicalize a ctdb_sock_addr structure.
+*/
+void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip)
+{
+ char prefix[12] = { 0,0,0,0,0,0,0,0,0,0,0xff,0xff };
+
+ memcpy(cip, ip, sizeof (*cip));
+
+ if ( (ip->sa.sa_family == AF_INET6)
+ && !memcmp(&ip->ip6.sin6_addr, prefix, 12)) {
+ memset(cip, 0, sizeof(*cip));
+#ifdef HAVE_SOCK_SIN_LEN
+ cip->ip.sin_len = sizeof(*cip);
#endif
+ cip->ip.sin_family = AF_INET;
+ cip->ip.sin_port = ip->ip6.sin6_port;
+ memcpy(&cip->ip.sin_addr, &ip->ip6.sin6_addr.s6_addr32[3], 4);
+ }
}
+
+bool ctdb_same_ip(const ctdb_sock_addr *tip1, const ctdb_sock_addr *tip2)
+{
+ ctdb_sock_addr ip1, ip2;
+
+ ctdb_canonicalize_ip(tip1, &ip1);
+ ctdb_canonicalize_ip(tip2, &ip2);
+
+ if (ip1.sa.sa_family != ip2.sa.sa_family) {
+ return false;
+ }
+
+ switch (ip1.sa.sa_family) {
+ case AF_INET:
+ return ip1.ip.sin_addr.s_addr == ip2.ip.sin_addr.s_addr;
+ case AF_INET6:
+ return !memcmp(&ip1.ip6.sin6_addr.s6_addr[0],
+ &ip2.ip6.sin6_addr.s6_addr[0],
+ 16);
+ default:
+ DEBUG(DEBUG_ERR, (__location__ " CRITICAL Can not compare sockaddr structures of type %u\n", ip1.sa.sa_family));
+ return false;
+ }
+
+ return true;
+}
+
+/*
+ compare two ctdb_sock_addr structures
+ */
+bool ctdb_same_sockaddr(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2)
+{
+ return ctdb_same_ip(ip1, ip2) && ip1->ip.sin_port == ip2->ip.sin_port;
+}
+
+char *ctdb_addr_to_str(ctdb_sock_addr *addr)
+{
+ static char cip[128] = "";
+
+ switch (addr->sa.sa_family) {
+ case AF_INET:
+ inet_ntop(addr->ip.sin_family, &addr->ip.sin_addr, cip, sizeof(cip));
+ break;
+ case AF_INET6:
+ inet_ntop(addr->ip6.sin6_family, &addr->ip6.sin6_addr, cip, sizeof(cip));
+ break;
+ default:
+ DEBUG(DEBUG_ERR, (__location__ " ERROR, unknown family %u\n", addr->sa.sa_family));
+ }
+
+ return cip;
+}
+
+unsigned ctdb_addr_to_port(ctdb_sock_addr *addr)
+{
+ switch (addr->sa.sa_family) {
+ case AF_INET:
+ return ntohs(addr->ip.sin_port);
+ break;
+ case AF_INET6:
+ return ntohs(addr->ip6.sin6_port);
+ break;
+ default:
+ DEBUG(DEBUG_ERR, (__location__ " ERROR, unknown family %u\n", addr->sa.sa_family));
+ }
+
+ return 0;
+}
+
+void ctdb_block_signal(int signum)
+{
+ sigset_t set;
+ sigemptyset(&set);
+ sigaddset(&set,signum);
+ sigprocmask(SIG_BLOCK,&set,NULL);
+}
+
+void ctdb_unblock_signal(int signum)
+{
+ sigset_t set;
+ sigemptyset(&set);
+ sigaddset(&set,signum);
+ sigprocmask(SIG_UNBLOCK,&set,NULL);
+}
+
+struct debug_levels debug_levels[] = {
+ {DEBUG_EMERG, "EMERG"},
+ {DEBUG_ALERT, "ALERT"},
+ {DEBUG_CRIT, "CRIT"},
+ {DEBUG_ERR, "ERR"},
+ {DEBUG_WARNING, "WARNING"},
+ {DEBUG_NOTICE, "NOTICE"},
+ {DEBUG_INFO, "INFO"},
+ {DEBUG_DEBUG, "DEBUG"},
+ {0, NULL}
+};
+
+const char *get_debug_by_level(int32_t level)
+{
+ int i;
+
+ for (i=0; debug_levels[i].description != NULL; i++) {
+ if (debug_levels[i].level == level) {
+ return debug_levels[i].description;
+ }
+ }
+ return "Unknown";
+}
+
+int32_t get_debug_by_desc(const char *desc)
+{
+ int i;
+
+ for (i=0; debug_levels[i].description != NULL; i++) {
+ if (!strcmp(debug_levels[i].description, desc)) {
+ return debug_levels[i].level;
+ }
+ }
+
+ return DEBUG_ERR;
+}
+
+/* we don't lock future pages here; it would increase the chance that
+ * we'd fail to mmap later on. */
+void ctdb_lockdown_memory(struct ctdb_context *ctdb)
+{
+#ifdef HAVE_MLOCKALL
+ /* Extra stack, please! */
+ char dummy[10000];
+ memset(dummy, 0, sizeof(dummy));
+
+ if (ctdb->valgrinding) {
+ return;
+ }
+
+ /* Avoid compiler optimizing out dummy. */
+ mlock(dummy, sizeof(dummy));
+ if (mlockall(MCL_CURRENT) != 0) {
+ DEBUG(DEBUG_WARNING,("Failed to lock memory: %s'\n",
+ strerror(errno)));
+ }
+#endif
+}
+
+const char *ctdb_eventscript_call_names[] = {
+ "init",
+ "setup",
+ "startup",
+ "startrecovery",
+ "recovered",
+ "takeip",
+ "releaseip",
+ "stopped",
+ "monitor",
+ "status",
+ "shutdown",
+ "reload",
+ "updateip",
+ "ipreallocated"
+};
git.samba.org / sahlberg / ctdb.git / blobdiff