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diff --git a/lib/fencing/st_rhcs.c b/lib/fencing/st_rhcs.c
index 029c97eeaa..dfccff2cba 100644
--- a/lib/fencing/st_rhcs.c
+++ b/lib/fencing/st_rhcs.c
@@ -1,318 +1,320 @@
/*
* Copyright 2004-2022 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <glib.h>
#include <dirent.h>
#include <crm/crm.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h>
#include "fencing_private.h"
#define RH_STONITH_PREFIX "fence_"
/*!
* \internal
* \brief Add available RHCS-compatible agents to a list
*
* \param[in,out] List to add to
*
* \return Number of agents added
*/
int
stonith__list_rhcs_agents(stonith_key_value_t **devices)
{
// Essentially: ls -1 @sbin_dir@/fence_*
int count = 0, i;
struct dirent **namelist;
const int file_num = scandir(PCMK__FENCE_BINDIR, &namelist, 0, alphasort);
#if _POSIX_C_SOURCE < 200809L && !(defined(O_SEARCH) || defined(O_PATH))
char buffer[FILENAME_MAX + 1];
#elif defined(O_SEARCH)
const int dirfd = open(PCMK__FENCE_BINDIR, O_SEARCH);
#else
const int dirfd = open(PCMK__FENCE_BINDIR, O_PATH);
#endif
for (i = 0; i < file_num; i++) {
struct stat prop;
if (pcmk__starts_with(namelist[i]->d_name, RH_STONITH_PREFIX)) {
#if _POSIX_C_SOURCE < 200809L && !(defined(O_SEARCH) || defined(O_PATH))
snprintf(buffer, sizeof(buffer), "%s/%s", PCMK__FENCE_BINDIR,
namelist[i]->d_name);
if (stat(buffer, &prop) == 0 && S_ISREG(prop.st_mode)) {
#else
if (dirfd == -1) {
if (i == 0) {
crm_notice("Problem with listing %s directory"
CRM_XS "errno=%d", RH_STONITH_PREFIX, errno);
}
free(namelist[i]);
continue;
}
/* note: we can possibly prevent following symlinks here,
which may be a good idea, but fall on the nose when
these agents are moved elsewhere & linked back */
if (fstatat(dirfd, namelist[i]->d_name, &prop, 0) == 0
&& S_ISREG(prop.st_mode)) {
#endif
*devices = stonith_key_value_add(*devices, NULL,
namelist[i]->d_name);
count++;
}
}
free(namelist[i]);
}
if (file_num > 0) {
free(namelist);
}
#if _POSIX_C_SOURCE >= 200809L || defined(O_SEARCH) || defined(O_PATH)
if (dirfd >= 0) {
close(dirfd);
}
#endif
return count;
}
static void
stonith_rhcs_parameter_not_required(xmlNode *metadata, const char *parameter)
{
char *xpath = NULL;
xmlXPathObject *xpathObj = NULL;
CRM_CHECK(metadata != NULL, return);
CRM_CHECK(parameter != NULL, return);
xpath = crm_strdup_printf("//parameter[@name='%s']", parameter);
/* Fudge metadata so that the parameter isn't required in config
* Pacemaker handles and adds it */
xpathObj = xpath_search(metadata, xpath);
if (numXpathResults(xpathObj) > 0) {
xmlNode *tmp = getXpathResult(xpathObj, 0);
crm_xml_add(tmp, "required", "0");
}
freeXpathObject(xpathObj);
free(xpath);
}
/*!
* \brief Execute RHCS-compatible agent's meta-data action
*
* \param[in] agent Agent to execute
* \param[in] timeout Action timeout
* \param[out] metadata Where to store output xmlNode (or NULL to ignore)
*
* \todo timeout is currently ignored; shouldn't we use it?
*/
static int
stonith__rhcs_get_metadata(const char *agent, int timeout, xmlNode **metadata)
{
xmlNode *xml = NULL;
xmlNode *actions = NULL;
xmlXPathObject *xpathObj = NULL;
pcmk__action_result_t *result = NULL;
stonith_action_t *action = stonith_action_create(agent, "metadata", NULL, 0,
5, NULL, NULL, NULL);
int rc = stonith__execute(action);
result = stonith__action_result(action);
- if (rc < 0 && result == NULL) {
- crm_warn("Could not execute metadata action for %s: %s "
- CRM_XS " rc=%d", agent, pcmk_strerror(rc), rc);
+ if (result == NULL) {
+ if (rc < 0) {
+ crm_warn("Could not execute metadata action for %s: %s "
+ CRM_XS " rc=%d", agent, pcmk_strerror(rc), rc);
+ }
stonith__destroy_action(action);
return rc;
}
if (result->execution_status != PCMK_EXEC_DONE) {
crm_warn("Could not execute metadata action for %s: %s",
agent, pcmk_exec_status_str(result->execution_status));
rc = pcmk_rc2legacy(stonith__result2rc(result));
stonith__destroy_action(action);
return rc;
}
if (!pcmk__result_ok(result)) {
crm_warn("Metadata action for %s returned error code %d",
agent, result->exit_status);
rc = pcmk_rc2legacy(stonith__result2rc(result));
stonith__destroy_action(action);
return rc;
}
if (result->action_stdout == NULL) {
crm_warn("Metadata action for %s returned no data", agent);
stonith__destroy_action(action);
return -ENODATA;
}
xml = string2xml(result->action_stdout);
stonith__destroy_action(action);
if (xml == NULL) {
crm_warn("Metadata for %s is invalid", agent);
return -pcmk_err_schema_validation;
}
xpathObj = xpath_search(xml, "//actions");
if (numXpathResults(xpathObj) > 0) {
actions = getXpathResult(xpathObj, 0);
}
freeXpathObject(xpathObj);
// Add start and stop (implemented by pacemaker, not agent) to meta-data
xpathObj = xpath_search(xml, "//action[@name='stop']");
if (numXpathResults(xpathObj) <= 0) {
xmlNode *tmp = NULL;
tmp = create_xml_node(actions, "action");
crm_xml_add(tmp, "name", "stop");
crm_xml_add(tmp, "timeout", CRM_DEFAULT_OP_TIMEOUT_S);
tmp = create_xml_node(actions, "action");
crm_xml_add(tmp, "name", "start");
crm_xml_add(tmp, "timeout", CRM_DEFAULT_OP_TIMEOUT_S);
}
freeXpathObject(xpathObj);
// Fudge metadata so parameters are not required in config (pacemaker adds them)
stonith_rhcs_parameter_not_required(xml, "action");
stonith_rhcs_parameter_not_required(xml, "plug");
stonith_rhcs_parameter_not_required(xml, "port");
if (metadata) {
*metadata = xml;
} else {
free_xml(xml);
}
return pcmk_ok;
}
/*!
* \brief Execute RHCS-compatible agent's meta-data action
*
* \param[in] agent Agent to execute
* \param[in] timeout Action timeout
* \param[out] output Where to store action output (or NULL to ignore)
*
* \todo timeout is currently ignored; shouldn't we use it?
*/
int
stonith__rhcs_metadata(const char *agent, int timeout, char **output)
{
char *buffer = NULL;
xmlNode *xml = NULL;
int rc = stonith__rhcs_get_metadata(agent, timeout, &xml);
if (rc != pcmk_ok) {
free_xml(xml);
return rc;
}
buffer = dump_xml_formatted_with_text(xml);
free_xml(xml);
if (buffer == NULL) {
return -pcmk_err_schema_validation;
}
if (output) {
*output = buffer;
} else {
free(buffer);
}
return pcmk_ok;
}
bool
stonith__agent_is_rhcs(const char *agent)
{
struct stat prop;
char *buffer = crm_strdup_printf(PCMK__FENCE_BINDIR "/%s", agent);
int rc = stat(buffer, &prop);
free(buffer);
return (rc >= 0) && S_ISREG(prop.st_mode);
}
int
stonith__rhcs_validate(stonith_t *st, int call_options, const char *target,
const char *agent, GHashTable *params,
const char * host_arg, int timeout,
char **output, char **error_output)
{
int rc = pcmk_ok;
int remaining_timeout = timeout;
xmlNode *metadata = NULL;
stonith_action_t *action = NULL;
pcmk__action_result_t *result = NULL;
if (host_arg == NULL) {
time_t start_time = time(NULL);
rc = stonith__rhcs_get_metadata(agent, remaining_timeout, &metadata);
if (rc == pcmk_ok) {
uint32_t device_flags = 0;
stonith__device_parameter_flags(&device_flags, agent, metadata);
if (pcmk_is_set(device_flags, st_device_supports_parameter_port)) {
host_arg = "port";
} else if (pcmk_is_set(device_flags,
st_device_supports_parameter_plug)) {
host_arg = "plug";
}
}
free_xml(metadata);
remaining_timeout -= time(NULL) - start_time;
if (rc == -ETIME || remaining_timeout <= 0 ) {
return -ETIME;
}
} else if (pcmk__str_eq(host_arg, PCMK__VALUE_NONE, pcmk__str_casei)) {
host_arg = NULL;
}
action = stonith_action_create(agent, "validate-all",
target, 0, remaining_timeout, params,
NULL, host_arg);
rc = stonith__execute(action);
result = stonith__action_result(action);
if (result != NULL) {
rc = pcmk_rc2legacy(stonith__result2rc(result));
// Take ownership of output so stonith__destroy_action() doesn't free it
if (output != NULL) {
*output = result->action_stdout;
result->action_stdout = NULL;
}
if (error_output != NULL) {
*error_output = result->action_stderr;
result->action_stderr = NULL;
}
}
stonith__destroy_action(action);
return rc;
}

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