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Diffstat (limited to 'usr/src/lib/libdscfg/common/cfg_cluster.c')
-rw-r--r--usr/src/lib/libdscfg/common/cfg_cluster.c582
1 files changed, 0 insertions, 582 deletions
diff --git a/usr/src/lib/libdscfg/common/cfg_cluster.c b/usr/src/lib/libdscfg/common/cfg_cluster.c
deleted file mode 100644
index c94b12c91e..0000000000
--- a/usr/src/lib/libdscfg/common/cfg_cluster.c
+++ /dev/null
@@ -1,582 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License (the "License").
- * You may not use this file except in compliance with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
- */
-
-/*
- * This file contains the glue code that allows the NWS software to
- * determine whether a cluster disk service is local to this node or
- * not.
- *
- * See PSARC/1999/462 for more information on the interfaces from
- * suncluster that are used here.
- */
-
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/mkdev.h>
-#include <sys/stat.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <strings.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <dlfcn.h>
-
-#include <sys/ncall/ncall.h>
-#include <sys/nsctl/nsc_hash.h>
-
-#include "cfg_cluster.h"
-#include "cfg_impl.h"
-#include "cfg.h"
-
-/*
- * Static variables
- */
-
-static scconf_nodeid_t cl_nodeid = (uint_t)0xffff;
-static char *cl_nodename = NULL;
-
-static void *libscstat;
-static void *libscconf;
-
-static hash_node_t **schash;
-static int init_sc_entry();
-
-typedef struct hash_data_s {
- scstat_node_name_t scstat_node_name;
-} hash_data_t;
-
-/*
- * Global variables
- */
-int cl_initialized = 0;
-
-
-/*
- * Tell the linker to keep quiet.
- */
-
-#pragma weak scconf_get_nodename
-#pragma weak scconf_strerr
-#pragma weak scconf_get_ds_by_devt
-
-#pragma weak scstat_get_ds_status
-#pragma weak scstat_free_ds_status
-#pragma weak scstat_strerr
-
-
-/*
- * Initialise the library if we have not done so before.
- *
- * - IMPORTANT -
- *
- * This must -never- be called from any command that can be started
- * from /usr/cluster/lib/sc/run_reserve (and hence
- * /usr/cluster/sbin/reconfig) or the system will deadlock
- * during switchover. This includes:
- *
- * - svadm (no options, "print") -- called during sv switchover
- * - all boot commands
- *
- * - grab this node's cluster nodeid
- * - attempt to dlopen() the suncluster shared libraries we need
- * - grab this node's cluster nodename
- *
- * Returns:
- * 0 - success
- * -1 - error, errno is set
- */
-
-int
-cfg_cluster_init(void)
-{
- const char *scconf = "/usr/cluster/lib/libscconf.so.1";
- const char *scstat = "/usr/cluster/lib/libscstat.so.1";
-#ifdef DEBUG
- char errbuf[SCCONF_MAXSTRINGLEN];
-#endif
- scconf_nodeid_t id;
- scconf_errno_t err;
- char *name;
- FILE *pipe;
- int rc;
-
- /*
- * First check to see if we really are a cluster as clinfo -n can lie
- */
- if (cl_nodeid == 0xffff) {
- rc = system("/usr/sbin/clinfo");
- if (rc != -1 && WEXITSTATUS(rc) == 1) {
- /* not a cluster */
- cl_initialized = 1;
- cl_nodeid = 0;
- return (0);
- }
-
- pipe = popen("/usr/sbin/clinfo -n 2>/dev/null || echo 0", "r");
- if (pipe == NULL) {
-#ifdef DEBUG
- fprintf(stderr, "unable to get nodeid: %s\n",
- strerror(errno));
-#endif
- return (-1);
- }
-
- if ((rc = fscanf(pipe, "%d", &id)) != 1) {
-#ifdef DEBUG
- fprintf(stderr, "unable to get nodeid: %s\n",
- strerror(errno));
-#endif
- return (-1);
- }
-
- pclose(pipe);
-
- cl_nodeid = id;
- }
-
- /* Already loaded the Sun Cluster device tree */
- if (cl_initialized)
- return (0);
-
- /*
- * Try and dlopen the various libraries that we need
- */
-
- libscconf = dlopen(scconf, RTLD_LAZY | RTLD_GLOBAL);
- if (libscconf == NULL)
- goto error;
-
- libscstat = dlopen(scstat, RTLD_LAZY | RTLD_GLOBAL);
- if (libscstat == NULL)
- goto error;
-
- err = scconf_get_nodename(id, &name);
- if (err == SCCONF_EPERM) {
- cl_nodename = NULL;
- } else if (err != SCCONF_NOERR) {
-#ifdef DEBUG
- scconf_strerr(errbuf, err);
- fprintf(stderr, "scconf_get_nodename: %d: %s\n", err, errbuf);
-#endif
- goto error;
- } else
- cl_nodename = name;
-
- /* Load the Sun Cluster device tree */
- init_sc_entry();
- cl_initialized = 1;
- return (0);
-
-error: /* error cleanup */
- if (libscconf)
- dlclose(libscconf);
-
- if (libscstat)
- dlclose(libscstat);
-
- libscconf = NULL;
- libscstat = NULL;
-
- errno = ENOSYS;
- return (-1);
-}
-
-
-/*
- * cfg_issuncluster()
- *
- * Description:
- * Return the SunCluster nodeid of this node.
- *
- * Returns:
- * >0 - running in a SunCluster (value is nodeid of this node)
- * 0 - not running in a cluster
- * -1 - failure; errno is set
- */
-
-int
-cfg_issuncluster()
-{
- if (cfg_cluster_init() >= 0)
- return ((int)cl_nodeid);
- else
- return (-1);
-}
-int
-cfg_iscluster()
-{
- return (cfg_issuncluster());
-}
-
-/*
- * cfg_l_dgname_islocal()
- * Check if disk group is local on a non-SunCluster.
- *
- * Returns as cfg_dgname_islocal().
- */
-#ifndef lint
-static int
-cfg_l_dgname_islocal(char *dgname, char **othernode)
-{
- const char *metaset = "/usr/sbin/metaset -s %s -o > /dev/null 2>&1";
- char command[1024];
- int rc;
-
- if (snprintf(command, sizeof (command), metaset, dgname) >=
- sizeof (command)) {
- errno = ENOMEM;
- return (-1);
- }
-
- rc = system(command);
- if (rc < 0) {
- return (-1);
- }
-
- if (WEXITSTATUS(rc) != 0) {
- if (othernode) {
- /* metaset doesn't tell us */
- *othernode = "unknown";
- }
-
- return (0);
- }
-
- return (1);
-}
-#endif
-
-/*
- * cfg_dgname_islocal(char *dgname, char **othernode)
- * -- determine if the named disk service is mastered on this node
- *
- * If the disk service is mastered on another node, that nodename
- * will be returned in othernode (if not NULL). It is up to the
- * calling program to call free() on this value at a later time to
- * free the memory allocated.
- *
- * Returns:
- * 1 - disk service is mastered on this node
- * 0 - disk service is not mastered on this node (*othernode set)
- * -1 - error (errno will be set)
- */
-
-int
-cfg_dgname_islocal(char *dgname, char **othernode)
-{
- hash_data_t *data;
-
- if (dgname == NULL || *dgname == '\0' || othernode == NULL) {
- errno = EINVAL;
- return (-1);
- }
-
- /* Handle non-cluster configurations */
- if (cfg_cluster_init() < 0) {
- return (-1);
- } else if (cl_nodeid == 0) {
- /* it has to be local */
- return (1);
- }
-
- /*
- * lookup the current diskgroup name
- */
- if (data = (hash_data_t *)nsc_lookup(schash, dgname)) {
- if (strcmp(data->scstat_node_name, cl_nodename)) {
- if (othernode)
- *othernode = strdup(data->scstat_node_name);
- return (0);
- } else {
- return (1);
- }
- } else {
- errno = ENODEV;
- return (-1);
- }
-}
-
-/*
- * cfg_l_dgname()
- * parse the disk group name from the a device pathname on a non-SunCluster.
- *
- * Returns as cfg_dgname().
- */
-
-char *
-cfg_l_dgname(const char *pathname, char *buffer, size_t buflen)
-{
- const char *dev = "/dev/";
- const char *vx = "vx/";
- const char *md = "md/";
- const char *dsk = "dsk/";
- const char *start, *cp;
- int ll, len, chkdsk;
-
- bzero(buffer, buflen);
- chkdsk = 0;
-
- ll = strlen(dev);
- if (strncmp(pathname, dev, ll) != 0) {
- /* not a device pathname */
- errno = EINVAL;
- return ((char *)NULL);
- }
-
- start = pathname + ll;
-
- if (strncmp(start, vx, (ll = strlen(vx))) == 0) {
- /*
- * Veritas --
- * /dev/vx/{r}dsk/dgname/partition
- */
-
- start += ll;
-
- ll = strlen(dsk);
-
- if (*start == 'r' && strncmp((start + 1), dsk, ll) == 0)
- start += ll + 1;
- else if (strncmp(start, dsk, ll) == 0)
- start += ll;
- else {
- /* no dgname */
- return (buffer);
- }
- } else {
- /* no dgname */
- return (buffer);
- }
-
- for (cp = start, len = 0; *cp != '\0' && *cp != '/'; cp++)
- len++; /* count length of dgname */
-
- if (*cp == '\0') {
- /* no dgname */
- return (buffer);
- }
-
-#ifdef DEBUG
- if (*cp != '/') {
- fprintf(stderr,
- "cfg_dgname: parse error: *cp = '%c', expected '/'\n", *cp);
- errno = EPROTO;
- return ((char *)NULL);
- }
-#endif
-
- if (chkdsk) {
- cp++; /* skip the NULL */
-
- ll = strlen(dsk);
-
- if ((*cp != 'r' || strncmp((cp + 1), dsk, ll) != 0) &&
- strncmp(cp, dsk, ll) != 0) {
- /* no dgname */
- return (buffer);
- }
- }
-
- if (len >= buflen) {
- errno = E2BIG;
- return ((char *)NULL);
- }
-
- (void) strncpy(buffer, start, len);
- return (buffer);
-}
-
-
-/*
- * cfg_dgname()
- * determine which cluster resource group the pathname belongs to, if any
- *
- * Returns:
- * NULL - error (errno is set)
- * ptr to NULL-string - no dgname
- * pointer to string - dgname
- */
-
-char *
-cfg_dgname(const char *pathname, char *buffer, size_t buflen)
-{
- scconf_errno_t conferr;
- char *dsname = NULL;
- struct stat stb;
-#ifdef DEBUG
- char errbuf[SCCONF_MAXSTRINGLEN];
-#endif
-
- bzero(buffer, buflen);
-
- if (pathname == NULL || *pathname == '\0') {
- errno = EINVAL;
- return ((char *)NULL);
- }
-
- /* Handle non-cluster configurations */
- if (cfg_cluster_init() < 0) {
- errno = EINVAL;
- return ((char *)NULL);
- } else if (cl_nodeid == 0) {
- /* must be local - return NULL-string dgname */
- return (buffer);
- }
-
- if (stat(pathname, &stb) < 0) {
- errno = EINVAL;
- return ((char *)NULL);
- }
-
- conferr = scconf_get_ds_by_devt(major(stb.st_rdev),
- minor(stb.st_rdev), &dsname);
-
- if (conferr == SCCONF_ENOEXIST) {
- return (buffer);
- } else if (conferr != SCCONF_NOERR) {
-#ifdef DEBUG
- scconf_strerr(errbuf, conferr);
- fprintf(stderr,
- "scconf_get_ds_by_devt: %d: %s\n", conferr, errbuf);
-#endif
- errno = EINVAL;
- return ((char *)NULL);
- }
-
- strncpy(buffer, dsname, buflen);
- free(dsname);
-
- return (buffer);
-}
-
-
-/*
- * init_sc_entry
- *
- * Add an entry into the sclist and the schash for future lookups.
- *
- * - IMPORTANT -
- *
- * This must -never- be called from any command that can be started
- * from /usr/cluster/lib/sc/run_reserve (and hence
- * /usr/cluster/sbin/reconfig) or the system will deadlock
- * during switchover. This includes:
- *
- * - svadm (no options, "print") -- called during sv switchover
- * - all boot commands
- *
- * Return values:
- * -1 An error occurred.
- * 0 Entry added
- * 1 Entry already exists.
- */
-static int
-init_sc_entry()
-{
- scstat_ds_node_state_t *dsn;
- scstat_ds_name_t dsname;
- scstat_ds_t *dsstatus, *dsp;
- scstat_errno_t err;
-#ifdef DEBUG
- char errbuf[SCCONF_MAXSTRINGLEN];
-#endif
-
- hash_data_t *hdp;
-
- /*
- * Allocate a hash table
- */
- if ((schash = nsc_create_hash()) == NULL)
- return (-1);
-
- /*
- * the API is broken here - the function is written to expect
- * the first argument to be (scstat_ds_name_t), but the function
- * declaration in scstat.h requires (scstat_ds_name_t *).
- *
- * We just cast it to get rid of the compiler warnings.
- * If "dsname" is NULL, information for all device services is returned
- */
- dsstatus = NULL;
- dsname = NULL;
- /* LINTED pointer alignment */
- err = scstat_get_ds_status((scstat_ds_name_t *)dsname, &dsstatus);
- if (err != SCSTAT_ENOERR) {
-#ifdef DEBUG
- scstat_strerr(err, errbuf);
- fprintf(stderr, "scstat_get_ds_status(): %d: %s\n",
- err, errbuf);
-#endif
- errno = ENOSYS;
- return (-1);
- }
-
- if (dsstatus == NULL) {
- errno = ENODEV;
- return (-1);
- }
-
- /*
- * Traverse scstat_ds list, saving away resource in out hash table
- */
- for (dsp = dsstatus; dsp; dsp = dsp->scstat_ds_next) {
-
- /* Skip over NULL scstat_ds_name's */
- if ((dsp->scstat_ds_name == NULL) ||
- (dsp->scstat_ds_name[0] == '\0'))
- continue;
-
- /* See element exits already, error if so */
- if (nsc_lookup(schash, dsp->scstat_ds_name)) {
- fprintf(stderr, "scstat_get_ds_status: duplicate %s",
- dsp->scstat_ds_name);
- errno = EEXIST;
- return (-1);
- }
-
- /* Traverse the node status list */
- for (dsn = dsp->scstat_node_state_list; dsn;
- dsn = dsn->scstat_node_next) {
- /*
- * Only keep trace of primary nodes
- */
- if (dsn->scstat_node_state != SCSTAT_PRIMARY)
- continue;
-
- /* Create an element to insert */
- hdp = (hash_data_t *)malloc(sizeof (hash_data_t));
- hdp->scstat_node_name = strdup(dsn->scstat_node_name);
- nsc_insert_node(schash, hdp, dsp->scstat_ds_name);
- }
- }
-
- /*
- * Free up scstat resources
- */
- scstat_free_ds_status(dsstatus);
- return (0);
-}