3 * Copyright (c) 2009-2010 The FreeBSD Foundation
4 * Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net>
7 * This software was developed by Pawel Jakub Dawidek under sponsorship from
8 * the FreeBSD Foundation.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/param.h> /* MAXHOSTNAMELEN */
35 #include <sys/queue.h>
36 #include <sys/socket.h>
37 #include <sys/sysctl.h>
39 #include <arpa/inet.h>
58 static struct hastd_config *lconfig;
59 static struct hast_resource *curres;
60 static bool mynode, hadmynode;
62 static char depth0_control[HAST_ADDRSIZE];
63 static char depth0_pidfile[PATH_MAX];
64 static char depth0_listen_tcp4[HAST_ADDRSIZE];
65 static char depth0_listen_tcp6[HAST_ADDRSIZE];
66 static TAILQ_HEAD(, hastd_listen) depth0_listen;
67 static int depth0_replication;
68 static int depth0_checksum;
69 static int depth0_compression;
70 static int depth0_timeout;
71 static char depth0_exec[PATH_MAX];
72 static int depth0_metaflush;
74 static char depth1_provname[PATH_MAX];
75 static char depth1_localpath[PATH_MAX];
76 static int depth1_metaflush;
78 extern void yyrestart(FILE *);
80 static int isitme(const char *name);
81 static bool family_supported(int family);
82 static int node_names(char **namesp);
85 %token CONTROL PIDFILE LISTEN REPLICATION CHECKSUM COMPRESSION METAFLUSH
86 %token TIMEOUT EXEC RESOURCE NAME LOCAL REMOTE SOURCE ON OFF
87 %token FULLSYNC MEMSYNC ASYNC NONE CRC32 SHA256 HOLE LZF
90 %type <str> remote_str
91 %type <num> replication_type
92 %type <num> checksum_type
93 %type <num> compression_type
119 replication_statement
123 compression_statement
136 control_statement: CONTROL STR
140 if (strlcpy(depth0_control, $2,
141 sizeof(depth0_control)) >=
142 sizeof(depth0_control)) {
143 pjdlog_error("control argument is too long.");
151 if (strlcpy(lconfig->hc_controladdr, $2,
152 sizeof(lconfig->hc_controladdr)) >=
153 sizeof(lconfig->hc_controladdr)) {
154 pjdlog_error("control argument is too long.");
160 PJDLOG_ABORT("control at wrong depth level");
166 pidfile_statement: PIDFILE STR
170 if (strlcpy(depth0_pidfile, $2,
171 sizeof(depth0_pidfile)) >=
172 sizeof(depth0_pidfile)) {
173 pjdlog_error("pidfile argument is too long.");
181 if (strlcpy(lconfig->hc_pidfile, $2,
182 sizeof(lconfig->hc_pidfile)) >=
183 sizeof(lconfig->hc_pidfile)) {
184 pjdlog_error("pidfile argument is too long.");
190 PJDLOG_ABORT("pidfile at wrong depth level");
196 listen_statement: LISTEN STR
198 struct hastd_listen *lst;
200 lst = calloc(1, sizeof(*lst));
202 pjdlog_error("Unable to allocate memory for listen address.");
206 if (strlcpy(lst->hl_addr, $2, sizeof(lst->hl_addr)) >=
207 sizeof(lst->hl_addr)) {
208 pjdlog_error("listen argument is too long.");
215 TAILQ_INSERT_TAIL(&depth0_listen, lst, hl_next);
219 TAILQ_INSERT_TAIL(&depth0_listen, lst, hl_next);
224 PJDLOG_ABORT("listen at wrong depth level");
230 replication_statement: REPLICATION replication_type
234 depth0_replication = $2;
237 PJDLOG_ASSERT(curres != NULL);
238 curres->hr_replication = $2;
239 curres->hr_original_replication = $2;
242 PJDLOG_ABORT("replication at wrong depth level");
248 FULLSYNC { $$ = HAST_REPLICATION_FULLSYNC; }
250 MEMSYNC { $$ = HAST_REPLICATION_MEMSYNC; }
252 ASYNC { $$ = HAST_REPLICATION_ASYNC; }
255 checksum_statement: CHECKSUM checksum_type
259 depth0_checksum = $2;
262 PJDLOG_ASSERT(curres != NULL);
263 curres->hr_checksum = $2;
266 PJDLOG_ABORT("checksum at wrong depth level");
272 NONE { $$ = HAST_CHECKSUM_NONE; }
274 CRC32 { $$ = HAST_CHECKSUM_CRC32; }
276 SHA256 { $$ = HAST_CHECKSUM_SHA256; }
279 compression_statement: COMPRESSION compression_type
283 depth0_compression = $2;
286 PJDLOG_ASSERT(curres != NULL);
287 curres->hr_compression = $2;
290 PJDLOG_ABORT("compression at wrong depth level");
296 NONE { $$ = HAST_COMPRESSION_NONE; }
298 HOLE { $$ = HAST_COMPRESSION_HOLE; }
300 LZF { $$ = HAST_COMPRESSION_LZF; }
303 timeout_statement: TIMEOUT NUM
306 pjdlog_error("Negative or zero timeout.");
314 PJDLOG_ASSERT(curres != NULL);
315 curres->hr_timeout = $2;
318 PJDLOG_ABORT("timeout at wrong depth level");
323 exec_statement: EXEC STR
327 if (strlcpy(depth0_exec, $2, sizeof(depth0_exec)) >=
328 sizeof(depth0_exec)) {
329 pjdlog_error("Exec path is too long.");
335 PJDLOG_ASSERT(curres != NULL);
336 if (strlcpy(curres->hr_exec, $2,
337 sizeof(curres->hr_exec)) >=
338 sizeof(curres->hr_exec)) {
339 pjdlog_error("Exec path is too long.");
345 PJDLOG_ABORT("exec at wrong depth level");
351 metaflush_statement: METAFLUSH boolean
355 depth0_metaflush = $2;
358 PJDLOG_ASSERT(curres != NULL);
359 depth1_metaflush = $2;
364 PJDLOG_ASSERT(curres != NULL);
365 curres->hr_metaflush = $2;
368 PJDLOG_ABORT("metaflush at wrong depth level");
379 node_statement: ON node_start OB node_entries CB
387 switch (isitme($1)) {
397 PJDLOG_ABORT("invalid isitme() return value");
405 node_entries node_entry
416 resource_statement: RESOURCE resource_start OB resource_entries CB
418 if (curres != NULL) {
420 * There must be section for this node, at least with
421 * remote address configuration.
426 if (node_names(&names) != 0)
428 pjdlog_error("No resource %s configuration for this node (acceptable node names: %s).",
429 curres->hr_name, names);
434 * Let's see if there are some resource-level settings
435 * that we can use for node-level settings.
437 if (curres->hr_provname[0] == '\0' &&
438 depth1_provname[0] != '\0') {
440 * Provider name is not set at node-level,
441 * but is set at resource-level, use it.
443 strlcpy(curres->hr_provname, depth1_provname,
444 sizeof(curres->hr_provname));
446 if (curres->hr_localpath[0] == '\0' &&
447 depth1_localpath[0] != '\0') {
449 * Path to local provider is not set at
450 * node-level, but is set at resource-level,
453 strlcpy(curres->hr_localpath, depth1_localpath,
454 sizeof(curres->hr_localpath));
456 if (curres->hr_metaflush == -1 && depth1_metaflush != -1) {
458 * Metaflush is not set at node-level,
459 * but is set at resource-level, use it.
461 curres->hr_metaflush = depth1_metaflush;
465 * If provider name is not given, use resource name
468 if (curres->hr_provname[0] == '\0') {
469 strlcpy(curres->hr_provname, curres->hr_name,
470 sizeof(curres->hr_provname));
474 * Remote address has to be configured at this point.
476 if (curres->hr_remoteaddr[0] == '\0') {
477 pjdlog_error("Remote address not configured for resource %s.",
482 * Path to local provider has to be configured at this
485 if (curres->hr_localpath[0] == '\0') {
486 pjdlog_error("Path to local component not configured for resource %s.",
491 /* Put it onto resource list. */
492 TAILQ_INSERT_TAIL(&lconfig->hc_resources, curres, hr_next);
500 /* Check if there is no duplicate entry. */
501 TAILQ_FOREACH(curres, &lconfig->hc_resources, hr_next) {
502 if (strcmp(curres->hr_name, $1) == 0) {
503 pjdlog_error("Resource %s configured more than once.",
511 * Clear those, so we can tell if they were set at
512 * resource-level or not.
514 depth1_provname[0] = '\0';
515 depth1_localpath[0] = '\0';
516 depth1_metaflush = -1;
519 curres = calloc(1, sizeof(*curres));
520 if (curres == NULL) {
521 pjdlog_error("Unable to allocate memory for resource.");
525 if (strlcpy(curres->hr_name, $1,
526 sizeof(curres->hr_name)) >=
527 sizeof(curres->hr_name)) {
528 pjdlog_error("Resource name is too long.");
534 curres->hr_role = HAST_ROLE_INIT;
535 curres->hr_previous_role = HAST_ROLE_INIT;
536 curres->hr_replication = -1;
537 curres->hr_original_replication = -1;
538 curres->hr_checksum = -1;
539 curres->hr_compression = -1;
540 curres->hr_version = 1;
541 curres->hr_timeout = -1;
542 curres->hr_exec[0] = '\0';
543 curres->hr_provname[0] = '\0';
544 curres->hr_localpath[0] = '\0';
545 curres->hr_localfd = -1;
546 curres->hr_localflush = true;
547 curres->hr_metaflush = -1;
548 curres->hr_remoteaddr[0] = '\0';
549 curres->hr_sourceaddr[0] = '\0';
550 curres->hr_ggateunit = -1;
556 resource_entries resource_entry
560 replication_statement
564 compression_statement
576 resource_node_statement
579 name_statement: NAME STR
583 if (strlcpy(depth1_provname, $2,
584 sizeof(depth1_provname)) >=
585 sizeof(depth1_provname)) {
586 pjdlog_error("name argument is too long.");
594 PJDLOG_ASSERT(curres != NULL);
595 if (strlcpy(curres->hr_provname, $2,
596 sizeof(curres->hr_provname)) >=
597 sizeof(curres->hr_provname)) {
598 pjdlog_error("name argument is too long.");
604 PJDLOG_ABORT("name at wrong depth level");
610 local_statement: LOCAL STR
614 if (strlcpy(depth1_localpath, $2,
615 sizeof(depth1_localpath)) >=
616 sizeof(depth1_localpath)) {
617 pjdlog_error("local argument is too long.");
625 PJDLOG_ASSERT(curres != NULL);
626 if (strlcpy(curres->hr_localpath, $2,
627 sizeof(curres->hr_localpath)) >=
628 sizeof(curres->hr_localpath)) {
629 pjdlog_error("local argument is too long.");
635 PJDLOG_ABORT("local at wrong depth level");
641 resource_node_statement:ON resource_node_start OB resource_node_entries CB
647 resource_node_start: STR
649 if (curres != NULL) {
650 switch (isitme($1)) {
657 mynode = hadmynode = true;
660 PJDLOG_ABORT("invalid isitme() return value");
667 resource_node_entries:
669 resource_node_entries resource_node_entry
684 remote_statement: REMOTE remote_str
686 PJDLOG_ASSERT(depth == 2);
688 PJDLOG_ASSERT(curres != NULL);
689 if (strlcpy(curres->hr_remoteaddr, $2,
690 sizeof(curres->hr_remoteaddr)) >=
691 sizeof(curres->hr_remoteaddr)) {
692 pjdlog_error("remote argument is too long.");
702 NONE { $$ = strdup("none"); }
707 source_statement: SOURCE STR
709 PJDLOG_ASSERT(depth == 2);
711 PJDLOG_ASSERT(curres != NULL);
712 if (strlcpy(curres->hr_sourceaddr, $2,
713 sizeof(curres->hr_sourceaddr)) >=
714 sizeof(curres->hr_sourceaddr)) {
715 pjdlog_error("source argument is too long.");
727 isitme(const char *name)
729 char buf[MAXHOSTNAMELEN];
730 unsigned long hostid;
735 * First check if the given name matches our full hostname.
737 if (gethostname(buf, sizeof(buf)) < 0) {
738 pjdlog_errno(LOG_ERR, "gethostname() failed");
741 if (strcmp(buf, name) == 0)
745 * Check if it matches first part of the host name.
747 pos = strchr(buf, '.');
748 if (pos != NULL && (size_t)(pos - buf) == strlen(name) &&
749 strncmp(buf, name, pos - buf) == 0) {
754 * Check if it matches host UUID.
756 bufsize = sizeof(buf);
757 if (sysctlbyname("kern.hostuuid", buf, &bufsize, NULL, 0) < 0) {
758 pjdlog_errno(LOG_ERR, "sysctlbyname(kern.hostuuid) failed");
761 if (strcasecmp(buf, name) == 0)
765 * Check if it matches hostid.
767 bufsize = sizeof(hostid);
768 if (sysctlbyname("kern.hostid", &hostid, &bufsize, NULL, 0) < 0) {
769 pjdlog_errno(LOG_ERR, "sysctlbyname(kern.hostid) failed");
772 (void)snprintf(buf, sizeof(buf), "hostid%lu", hostid);
773 if (strcmp(buf, name) == 0)
777 * Looks like this isn't about us.
783 family_supported(int family)
787 sock = socket(family, SOCK_STREAM, 0);
788 if (sock == -1 && errno == EPROTONOSUPPORT)
796 node_names(char **namesp)
798 static char names[MAXHOSTNAMELEN * 3];
799 char buf[MAXHOSTNAMELEN];
800 unsigned long hostid;
804 if (gethostname(buf, sizeof(buf)) < 0) {
805 pjdlog_errno(LOG_ERR, "gethostname() failed");
809 /* First component of the host name. */
810 pos = strchr(buf, '.');
811 if (pos != NULL && pos != buf) {
812 (void)strlcpy(names, buf, MIN((size_t)(pos - buf + 1),
814 (void)strlcat(names, ", ", sizeof(names));
817 /* Full host name. */
818 (void)strlcat(names, buf, sizeof(names));
819 (void)strlcat(names, ", ", sizeof(names));
822 bufsize = sizeof(buf);
823 if (sysctlbyname("kern.hostuuid", buf, &bufsize, NULL, 0) < 0) {
824 pjdlog_errno(LOG_ERR, "sysctlbyname(kern.hostuuid) failed");
827 (void)strlcat(names, buf, sizeof(names));
828 (void)strlcat(names, ", ", sizeof(names));
831 bufsize = sizeof(hostid);
832 if (sysctlbyname("kern.hostid", &hostid, &bufsize, NULL, 0) < 0) {
833 pjdlog_errno(LOG_ERR, "sysctlbyname(kern.hostid) failed");
836 (void)snprintf(buf, sizeof(buf), "hostid%lu", hostid);
837 (void)strlcat(names, buf, sizeof(names));
845 yyerror(const char *str)
848 pjdlog_error("Unable to parse configuration file at line %d near '%s': %s",
849 lineno, yytext, str);
852 struct hastd_config *
853 yy_config_parse(const char *config, bool exitonerror)
862 depth0_timeout = HAST_TIMEOUT;
863 depth0_replication = HAST_REPLICATION_MEMSYNC;
864 depth0_checksum = HAST_CHECKSUM_NONE;
865 depth0_compression = HAST_COMPRESSION_HOLE;
866 strlcpy(depth0_control, HAST_CONTROL, sizeof(depth0_control));
867 strlcpy(depth0_pidfile, HASTD_PIDFILE, sizeof(depth0_pidfile));
868 TAILQ_INIT(&depth0_listen);
869 strlcpy(depth0_listen_tcp4, HASTD_LISTEN_TCP4,
870 sizeof(depth0_listen_tcp4));
871 strlcpy(depth0_listen_tcp6, HASTD_LISTEN_TCP6,
872 sizeof(depth0_listen_tcp6));
873 depth0_exec[0] = '\0';
874 depth0_metaflush = 1;
876 lconfig = calloc(1, sizeof(*lconfig));
877 if (lconfig == NULL) {
878 pjdlog_error("Unable to allocate memory for configuration.");
884 TAILQ_INIT(&lconfig->hc_listen);
885 TAILQ_INIT(&lconfig->hc_resources);
887 yyin = fopen(config, "r");
889 pjdlog_errno(LOG_ERR, "Unable to open configuration file %s",
891 yy_config_free(lconfig);
900 yy_config_free(lconfig);
907 * Let's see if everything is set up.
909 if (lconfig->hc_controladdr[0] == '\0') {
910 strlcpy(lconfig->hc_controladdr, depth0_control,
911 sizeof(lconfig->hc_controladdr));
913 if (lconfig->hc_pidfile[0] == '\0') {
914 strlcpy(lconfig->hc_pidfile, depth0_pidfile,
915 sizeof(lconfig->hc_pidfile));
917 if (!TAILQ_EMPTY(&depth0_listen))
918 TAILQ_CONCAT(&lconfig->hc_listen, &depth0_listen, hl_next);
919 if (TAILQ_EMPTY(&lconfig->hc_listen)) {
920 struct hastd_listen *lst;
922 if (family_supported(AF_INET)) {
923 lst = calloc(1, sizeof(*lst));
925 pjdlog_error("Unable to allocate memory for listen address.");
926 yy_config_free(lconfig);
931 (void)strlcpy(lst->hl_addr, depth0_listen_tcp4,
932 sizeof(lst->hl_addr));
933 TAILQ_INSERT_TAIL(&lconfig->hc_listen, lst, hl_next);
936 "No IPv4 support in the kernel, not listening on IPv4 address.");
938 if (family_supported(AF_INET6)) {
939 lst = calloc(1, sizeof(*lst));
941 pjdlog_error("Unable to allocate memory for listen address.");
942 yy_config_free(lconfig);
947 (void)strlcpy(lst->hl_addr, depth0_listen_tcp6,
948 sizeof(lst->hl_addr));
949 TAILQ_INSERT_TAIL(&lconfig->hc_listen, lst, hl_next);
952 "No IPv6 support in the kernel, not listening on IPv6 address.");
954 if (TAILQ_EMPTY(&lconfig->hc_listen)) {
955 pjdlog_error("No address to listen on.");
956 yy_config_free(lconfig);
962 TAILQ_FOREACH(curres, &lconfig->hc_resources, hr_next) {
963 PJDLOG_ASSERT(curres->hr_provname[0] != '\0');
964 PJDLOG_ASSERT(curres->hr_localpath[0] != '\0');
965 PJDLOG_ASSERT(curres->hr_remoteaddr[0] != '\0');
967 if (curres->hr_replication == -1) {
969 * Replication is not set at resource-level.
970 * Use global or default setting.
972 curres->hr_replication = depth0_replication;
973 curres->hr_original_replication = depth0_replication;
975 if (curres->hr_checksum == -1) {
977 * Checksum is not set at resource-level.
978 * Use global or default setting.
980 curres->hr_checksum = depth0_checksum;
982 if (curres->hr_compression == -1) {
984 * Compression is not set at resource-level.
985 * Use global or default setting.
987 curres->hr_compression = depth0_compression;
989 if (curres->hr_timeout == -1) {
991 * Timeout is not set at resource-level.
992 * Use global or default setting.
994 curres->hr_timeout = depth0_timeout;
996 if (curres->hr_exec[0] == '\0') {
998 * Exec is not set at resource-level.
999 * Use global or default setting.
1001 strlcpy(curres->hr_exec, depth0_exec,
1002 sizeof(curres->hr_exec));
1004 if (curres->hr_metaflush == -1) {
1006 * Metaflush is not set at resource-level.
1007 * Use global or default setting.
1009 curres->hr_metaflush = depth0_metaflush;
1017 yy_config_free(struct hastd_config *config)
1019 struct hastd_listen *lst;
1020 struct hast_resource *res;
1022 while ((lst = TAILQ_FIRST(&depth0_listen)) != NULL) {
1023 TAILQ_REMOVE(&depth0_listen, lst, hl_next);
1026 while ((lst = TAILQ_FIRST(&config->hc_listen)) != NULL) {
1027 TAILQ_REMOVE(&config->hc_listen, lst, hl_next);
1030 while ((res = TAILQ_FIRST(&config->hc_resources)) != NULL) {
1031 TAILQ_REMOVE(&config->hc_resources, res, hr_next);