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diff --git a/crm/cib/io.c b/crm/cib/io.c
index 8b5eed41dc..ff7fb24299 100644
--- a/crm/cib/io.c
+++ b/crm/cib/io.c
@@ -1,761 +1,774 @@
-/* $Id: io.c,v 1.77 2006/07/07 08:29:34 andrew Exp $ */
+/* $Id: io.c,v 1.78 2006/07/07 09:04:40 andrew Exp $ */
/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* 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 2.1 of the License, or (at your option) any later version.
*
* This software 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <portability.h>
#include <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <heartbeat.h>
#include <crm/crm.h>
#include <cibio.h>
#include <crm/cib.h>
#include <crm/common/util.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <crm/common/util.h>
#include <clplumbing/cl_misc.h>
#include <clplumbing/lsb_exitcodes.h>
#include <cibprimatives.h>
#include <crm/dmalloc_wrapper.h>
const char * local_resource_path[] =
{
XML_CIB_TAG_STATUS,
};
const char * resource_path[] =
{
XML_CIB_TAG_RESOURCES,
};
const char * node_path[] =
{
XML_CIB_TAG_NODES,
};
const char * constraint_path[] =
{
XML_CIB_TAG_CONSTRAINTS,
};
gboolean initialized = FALSE;
crm_data_t *the_cib = NULL;
crm_data_t *node_search = NULL;
crm_data_t *resource_search = NULL;
crm_data_t *constraint_search = NULL;
crm_data_t *status_search = NULL;
extern gboolean cib_writes_enabled;
extern char *ccm_transition_id;
extern gboolean cib_have_quorum;
extern GHashTable *peer_hash;
extern GHashTable *ccm_membership;
extern GTRIGSource *cib_writer;
extern enum cib_errors cib_status;
int set_connected_peers(crm_data_t *xml_obj);
void GHFunc_count_peers(gpointer key, gpointer value, gpointer user_data);
int write_cib_contents(gpointer p);
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
static gboolean
validate_cib_digest(crm_data_t *local_cib)
{
int s_res = -1;
struct stat buf;
char *digest = NULL;
char *expected = NULL;
gboolean passed = FALSE;
FILE *expected_strm = NULL;
int start = 0, length = 0, read_len = 0;
s_res = stat(CIB_FILENAME ".sig", &buf);
if (s_res != 0) {
crm_warn("No on-disk digest present");
return TRUE;
}
if(local_cib != NULL) {
digest = calculate_xml_digest(local_cib, FALSE);
}
expected_strm = fopen(CIB_FILENAME ".sig", "r");
start = ftell(expected_strm);
fseek(expected_strm, 0L, SEEK_END);
length = ftell(expected_strm);
fseek(expected_strm, 0L, start);
CRM_ASSERT(start == ftell(expected_strm));
crm_debug_3("Reading %d bytes from file", length);
crm_malloc0(expected, (length+1));
read_len = fread(expected, 1, length, expected_strm);
CRM_ASSERT(read_len == length);
if(expected == NULL) {
crm_err("On-disk digest is empty");
} else if(safe_str_eq(expected, digest)) {
crm_debug("Digest comparision passed: %s", digest);
passed = TRUE;
} else {
crm_err("Digest comparision failed: %s vs. %s",
expected, digest);
}
crm_free(digest);
crm_free(expected);
return passed;
}
static int
write_cib_digest(crm_data_t *local_cib, char *digest)
{
int rc = 0;
FILE *digest_strm = fopen(CIB_FILENAME ".sig", "w");
char *local_digest = NULL;
CRM_ASSERT(digest_strm != NULL);
if(digest == NULL) {
local_digest = calculate_xml_digest(local_cib, FALSE);
CRM_ASSERT(digest != NULL);
digest = local_digest;
}
rc = fprintf(digest_strm, "%s", digest);
if(rc < 0) {
cl_perror("Cannot write output to %s.sig", CIB_FILENAME);
}
fflush(digest_strm);
fclose(digest_strm);
crm_free(local_digest);
return rc;
}
static gboolean
validate_on_disk_cib(const char *filename, crm_data_t **on_disk_cib)
{
int s_res = -1;
struct stat buf;
FILE *cib_file = NULL;
gboolean passed = TRUE;
crm_data_t *root = NULL;
if(filename != NULL) {
s_res = stat(filename, &buf);
}
if (s_res == 0) {
cib_file = fopen(filename, "r");
crm_debug_2("Reading cluster configuration from: %s", filename);
root = file2xml(cib_file);
fclose(cib_file);
if(validate_cib_digest(root) == FALSE) {
passed = FALSE;
}
}
if(on_disk_cib != NULL) {
*on_disk_cib = root;
} else {
free_xml(root);
}
return passed;
}
/*
* It is the callers responsibility to free the output of this function
*/
crm_data_t*
readCibXmlFile(const char *filename, gboolean discard_status)
{
int s_res = -1;
struct stat buf;
gboolean valid = TRUE;
const char *name = NULL;
const char *value = NULL;
crm_data_t *root = NULL;
crm_data_t *status = NULL;
struct passwd *cib_user = NULL;
gboolean user_readwritable = FALSE;
if(filename != NULL) {
s_res = stat(filename, &buf);
}
if (s_res != 0) {
return NULL;
}
cib_user = getpwnam(HA_CCMUSER);
user_readwritable = (cib_user != NULL
&& buf.st_uid == cib_user->pw_uid
&& (buf.st_mode & (S_IRUSR|S_IWUSR)));
if( S_ISREG(buf.st_mode) == FALSE ) {
cib_status = cib_bad_permissions;
crm_err("%s must be a regular file", filename);
} else if( user_readwritable == FALSE ) {
struct group *cib_grp = getgrnam(HA_APIGROUP);
gboolean group_readwritable = (
cib_grp != NULL
&& buf.st_gid == cib_grp->gr_gid
&& (buf.st_mode & (S_IRGRP|S_IWGRP)));
if( group_readwritable == FALSE ) {
crm_err("%s must be owned and read/writeable by user %s,"
" or owned and read/writable by group %s",
filename, HA_CCMUSER, HA_APIGROUP);
cib_status = cib_bad_permissions;
return NULL;
}
crm_warn("%s should be owned and read/writeable by user %s",
filename, HA_CCMUSER);
}
crm_info("Reading cluster configuration from: %s", filename);
if(validate_on_disk_cib(filename, &root) == FALSE) {
valid = FALSE;
crm_err("%s has been manually changed"
" - if this was intended, please remove the md5 digest in %s.sig",
filename, filename);
cib_status = cib_bad_digest;
return NULL;
}
status = find_xml_node(root, XML_CIB_TAG_STATUS, FALSE);
if(root != NULL && discard_status && status != NULL) {
/* strip out the status section if there is one */
free_xml_from_parent(root, status);
status = NULL;
}
if(status == NULL) {
create_xml_node(root, XML_CIB_TAG_STATUS);
}
/* Do this before DTD validation happens */
if(root != NULL) {
/* fill in some defaults */
name = XML_ATTR_GENERATION_ADMIN;
value = crm_element_value(root, name);
if(value == NULL) {
crm_xml_add_int(root, name, 0);
}
name = XML_ATTR_GENERATION;
value = crm_element_value(root, name);
if(value == NULL) {
crm_xml_add_int(root, name, 0);
}
name = XML_ATTR_NUMUPDATES;
value = crm_element_value(root, name);
if(value == NULL) {
crm_xml_add_int(root, name, 0);
}
/* unset these and require the DC/CCM to update as needed */
- crm_xml_add(root, XML_ATTR_HAVE_QUORUM, XML_BOOLEAN_FALSE);
+ update_counters(__FILE__, __PRETTY_FUNCTION__, root);
xml_remove_prop(root, XML_ATTR_DC_UUID);
}
crm_log_xml_info(root, "[on-disk]");
if(root != NULL) {
const char *ignore_dtd = crm_element_value(root, "ignore_dtd");
gboolean dtd_ok = validate_with_dtd(
root, TRUE, HA_LIBDIR"/heartbeat/crm.dtd");
if(dtd_ok == FALSE
#if CRM_DEPRECATED_SINCE_2_0_4
&& ignore_dtd != NULL
#endif
&& crm_is_true(ignore_dtd) == FALSE) {
crm_err("On disk CIB does not conform to the DTD");
valid = FALSE;
}
}
if(root == NULL) {
crm_crit("Parse ERROR reading %s.", filename);
cib_status = cib_bad_config;
return NULL;
} else if(valid == FALSE) {
crm_err("%s does not contain a valid configuration", filename);
cib_status = cib_bad_config;
}
crm_xml_add(root, "generated", XML_BOOLEAN_FALSE);
if(do_id_check(root, NULL, FALSE, FALSE)) {
crm_crit("%s does not contain a vaild configuration.",
filename);
cib_status = cib_bad_config;
}
if (verifyCibXml(root) == FALSE) {
crm_crit("%s does not contain a vaild configuration.",
filename);
cib_status = cib_bad_config;
}
return root;
}
/*
* The caller should never free the return value
*/
crm_data_t*
get_the_CIB(void)
{
return the_cib;
}
gboolean
uninitializeCib(void)
{
crm_data_t *tmp_cib = the_cib;
if(tmp_cib == NULL) {
- crm_err("The CIB has already been deallocated.");
+ crm_debug("The CIB has already been deallocated.");
return FALSE;
}
initialized = FALSE;
the_cib = NULL;
node_search = NULL;
resource_search = NULL;
constraint_search = NULL;
status_search = NULL;
- crm_err("Deallocating the CIB.");
+ crm_debug("Deallocating the CIB.");
free_xml(tmp_cib);
- crm_err("The CIB has been deallocated.");
+ crm_info("The CIB has been deallocated.");
return TRUE;
}
/*
* This method will not free the old CIB pointer or the new one.
* We rely on the caller to have saved a pointer to the old CIB
* and to free the old/bad one depending on what is appropriate.
*/
gboolean
initializeCib(crm_data_t *new_cib)
{
gboolean is_valid = TRUE;
crm_data_t *tmp_node = NULL;
if(new_cib == NULL) {
return FALSE;
}
xml_validate(new_cib);
tmp_node = get_object_root(XML_CIB_TAG_NODES, new_cib);
if (tmp_node == NULL) { is_valid = FALSE; }
tmp_node = get_object_root(XML_CIB_TAG_RESOURCES, new_cib);
if (tmp_node == NULL) { is_valid = FALSE; }
tmp_node = get_object_root(XML_CIB_TAG_CONSTRAINTS, new_cib);
if (tmp_node == NULL) { is_valid = FALSE; }
tmp_node = get_object_root(XML_CIB_TAG_CRMCONFIG, new_cib);
if (tmp_node == NULL) { is_valid = FALSE; }
tmp_node = get_object_root(XML_CIB_TAG_STATUS, new_cib);
if (is_valid && tmp_node == NULL) {
create_xml_node(new_cib, XML_CIB_TAG_STATUS);
}
if(is_valid == FALSE) {
crm_warn("CIB Verification failed");
return FALSE;
}
update_counters(__FILE__, __FUNCTION__, new_cib);
the_cib = new_cib;
initialized = TRUE;
return TRUE;
}
static int
archive_file(const char *oldname, const char *newname, const char *ext)
{
/* move 'oldname' to 'newname' by creating a hard link to it
* and then removing the original hard link
*/
int rc = 0;
int res = 0;
struct stat tmp;
int s_res = 0;
char *backup_file = NULL;
static const char *back_ext = "bak";
/* calculate the backup name if required */
if(newname != NULL) {
backup_file = crm_strdup(newname);
} else {
int max_name_len = 1024;
crm_malloc0(backup_file, max_name_len);
if (ext == NULL) {
ext = back_ext;
}
snprintf(backup_file, max_name_len - 1, "%s.%s", oldname, ext);
}
if(backup_file == NULL || strlen(backup_file) == 0) {
crm_err("%s backup filename was %s",
newname == NULL?"calculated":"supplied",
backup_file == NULL?"null":"empty");
rc = -4;
}
s_res = stat(backup_file, &tmp);
/* unlink the old backup */
if (rc == 0 && s_res >= 0) {
res = unlink(backup_file);
if (res < 0) {
cl_perror("Could not unlink %s", backup_file);
rc = -1;
}
}
s_res = stat(oldname, &tmp);
/* copy */
if (rc == 0 && s_res >= 0) {
res = link(oldname, backup_file);
if (res < 0) {
cl_perror("Could not create backup %s from %s",
backup_file, oldname);
rc = -2;
}
}
/* unlink the original */
if (rc == 0 && s_res >= 0) {
res = unlink(oldname);
if (res < 0) {
cl_perror("Could not unlink %s", oldname);
rc = -3;
}
}
crm_free(backup_file);
return rc;
}
/*
* This method will free the old CIB pointer on success and the new one
* on failure.
*/
int
activateCibXml(crm_data_t *new_cib, const char *ignored)
{
int error_code = cib_ok;
crm_data_t *saved_cib = the_cib;
const char *ignore_dtd = NULL;
long new_bytes, new_allocs, new_frees;
long old_bytes, old_allocs, old_frees;
crm_log_xml_debug_4(new_cib, "Attempting to activate CIB");
CRM_ASSERT(new_cib != saved_cib);
if(saved_cib != NULL) {
crm_validate_data(saved_cib);
}
ignore_dtd = crm_element_value(new_cib, "ignore_dtd");
if(
#if CRM_DEPRECATED_SINCE_2_0_4
ignore_dtd != NULL &&
#endif
crm_is_true(ignore_dtd) == FALSE
&& validate_with_dtd(
new_cib, TRUE, HA_LIBDIR"/heartbeat/crm.dtd") == FALSE) {
error_code = cib_dtd_validation;
crm_err("Ignoring invalid CIB");
}
if(error_code == cib_ok && initializeCib(new_cib) == FALSE) {
error_code = cib_ACTIVATION;
crm_err("Ignoring invalid or NULL CIB");
}
if(error_code != cib_ok) {
if(saved_cib != NULL) {
crm_warn("Reverting to last known CIB");
if (initializeCib(saved_cib) == FALSE) {
/* oh we are so dead */
crm_crit("Couldn't re-initialize the old CIB!");
cl_flush_logs();
exit(1);
}
} else {
crm_crit("Could not write out new CIB and no saved"
" version to revert to");
}
} else if(per_action_cib && cib_writes_enabled && cib_status == cib_ok) {
write_cib_contents(the_cib);
uninitializeCib();
free_xml(saved_cib);
return error_code;
} else if(cib_writes_enabled && cib_status == cib_ok) {
crm_debug_2("Triggering CIB write");
G_main_set_trigger(cib_writer);
crm_xml_nbytes(new_cib, &new_bytes, &new_allocs, &new_frees);
crm_xml_nbytes(saved_cib, &old_bytes, &old_allocs, &old_frees);
if(new_bytes != old_bytes) {
crm_info("CIB size is %ld bytes (was %ld)", new_bytes, old_bytes);
crm_adjust_mem_stats(NULL, new_bytes - old_bytes,
new_allocs - old_allocs, new_frees - old_frees);
if(crm_running_stats != NULL) {
crm_adjust_mem_stats(
crm_running_stats, new_bytes - old_bytes,
new_allocs - old_allocs, new_frees - old_frees);
}
}
}
if(the_cib != saved_cib && the_cib != new_cib) {
CRM_DEV_ASSERT(error_code != cib_ok);
CRM_DEV_ASSERT(the_cib == NULL);
}
if(the_cib != new_cib) {
free_xml(new_cib);
CRM_DEV_ASSERT(error_code != cib_ok);
}
if(the_cib != saved_cib) {
free_xml(saved_cib);
}
return error_code;
}
int
write_cib_contents(gpointer p)
{
int rc = 0;
char *digest = NULL;
crm_data_t *cib_status_root = NULL;
const char *digest_filename = CIB_FILENAME ".sig";
/* we can scribble on "the_cib" here and not affect the parent */
const char *epoch = crm_element_value(the_cib, XML_ATTR_GENERATION);
const char *updates = crm_element_value(the_cib, XML_ATTR_NUMUPDATES);
const char *admin_epoch = crm_element_value(
the_cib, XML_ATTR_GENERATION_ADMIN);
/* check the admin didnt modify it underneath us */
if(validate_on_disk_cib(CIB_FILENAME, NULL) == FALSE) {
crm_err("%s was manually modified while Heartbeat was active!",
CIB_FILENAME);
exit(LSB_EXIT_GENERIC);
}
rc = archive_file(CIB_FILENAME, NULL, "last");
if(rc != 0) {
crm_err("Could not make backup of the existing CIB: %d", rc);
exit(LSB_EXIT_GENERIC);
}
rc = archive_file(digest_filename, NULL, "last");
if(rc != 0) {
crm_warn("Could not make backup of the existing CIB digest: %d",
rc);
}
/* Given that we discard the status section on startup
* there is no point writing it out in the first place
* since users just get confused by it
*
* Although, it does help me once in a while
*
* So delete the status section before we write it out
*/
if(p == NULL) {
cib_status_root = find_xml_node(
the_cib, XML_CIB_TAG_STATUS, TRUE);
CRM_DEV_ASSERT(cib_status_root != NULL);
if(cib_status_root != NULL) {
free_xml_from_parent(the_cib, cib_status_root);
}
}
rc = write_xml_file(the_cib, CIB_FILENAME, FALSE);
if(rc <= 0) {
crm_err("Changes couldn't be written to disk");
exit(LSB_EXIT_GENERIC);
}
digest = calculate_xml_digest(the_cib, FALSE);
crm_info("Wrote version %s.%s.%s of the CIB to disk (digest: %s)",
admin_epoch?admin_epoch:"0",
epoch?epoch:"0", updates?updates:"0", digest);
rc = write_cib_digest(the_cib, digest);
if(rc <= 0) {
crm_err("Digest couldn't be written to disk");
exit(LSB_EXIT_GENERIC);
}
#if 0
if(validate_on_disk_cib(CIB_FILENAME, NULL) == FALSE) {
crm_err("wrote incorrect digest");
exit(LSB_EXIT_GENERIC);
}
#endif
if(p == NULL) {
exit(LSB_EXIT_OK);
}
crm_free(digest);
return HA_OK;
}
gboolean
set_transition(crm_data_t *xml_obj)
{
- const char *current = crm_element_value(
- xml_obj, XML_ATTR_CCM_TRANSITION);
+ const char *current = NULL;
+ if(xml_obj == NULL) {
+ return FALSE;
+ }
+
+ current = crm_element_value(xml_obj, XML_ATTR_CCM_TRANSITION);
if(safe_str_neq(current, ccm_transition_id)) {
crm_debug("CCM transition: old=%s, new=%s",
current, ccm_transition_id);
crm_xml_add(xml_obj, XML_ATTR_CCM_TRANSITION,ccm_transition_id);
return TRUE;
}
return FALSE;
}
gboolean
set_connected_peers(crm_data_t *xml_obj)
{
int active = 0;
int current = 0;
char *peers_s = NULL;
- const char *current_s = crm_element_value(xml_obj, XML_ATTR_NUMPEERS);
-
+ const char *current_s = NULL;
+ if(xml_obj == NULL) {
+ return FALSE;
+ }
+
+ current_s = crm_element_value(xml_obj, XML_ATTR_NUMPEERS);
g_hash_table_foreach(peer_hash, GHFunc_count_peers, &active);
current = crm_parse_int(current_s, "0");
if(current != active) {
peers_s = crm_itoa(active);
crm_xml_add(xml_obj, XML_ATTR_NUMPEERS, peers_s);
crm_debug("We now have %s active peers", peers_s);
crm_free(peers_s);
return TRUE;
}
return FALSE;
}
gboolean
update_quorum(crm_data_t *xml_obj)
{
const char *quorum_value = XML_BOOLEAN_FALSE;
- const char *current = crm_element_value(xml_obj, XML_ATTR_HAVE_QUORUM);
+ const char *current = NULL;
+ if(xml_obj == NULL) {
+ return FALSE;
+ }
+
+ current = crm_element_value(xml_obj, XML_ATTR_HAVE_QUORUM);
if(cib_have_quorum) {
quorum_value = XML_BOOLEAN_TRUE;
}
if(safe_str_neq(current, quorum_value)) {
crm_debug("CCM quorum: old=%s, new=%s",
current, quorum_value);
crm_xml_add(xml_obj, XML_ATTR_HAVE_QUORUM, quorum_value);
return TRUE;
}
return FALSE;
}
gboolean
update_counters(const char *file, const char *fn, crm_data_t *xml_obj)
{
gboolean did_update = FALSE;
did_update = did_update || update_quorum(xml_obj);
did_update = did_update || set_transition(xml_obj);
did_update = did_update || set_connected_peers(xml_obj);
if(did_update) {
do_crm_log(LOG_DEBUG, file, fn, "Counters updated");
}
return did_update;
}
void GHFunc_count_peers(gpointer key, gpointer value, gpointer user_data)
{
int *active = user_data;
if(safe_str_eq(value, ONLINESTATUS)) {
(*active)++;
} else if(safe_str_eq(value, JOINSTATUS)) {
(*active)++;
}
}

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