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Diffstat (limited to 'usr/src/lib/librdc/common/rdcrules.c')
-rw-r--r--usr/src/lib/librdc/common/rdcrules.c545
1 files changed, 545 insertions, 0 deletions
diff --git a/usr/src/lib/librdc/common/rdcrules.c b/usr/src/lib/librdc/common/rdcrules.c
new file mode 100644
index 0000000000..76fe39d48d
--- /dev/null
+++ b/usr/src/lib/librdc/common/rdcrules.c
@@ -0,0 +1,545 @@
+/*
+ * 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.
+ */
+
+#include <sys/types.h>
+#include <sys/utsname.h>
+#include <sys/mdb_modapi.h>
+#include <stdio.h>
+#include <errno.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <libintl.h>
+#include <sys/stream.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <ctype.h>
+#include <thread.h>
+#include <pthread.h>
+
+#include <sys/unistat/spcs_s.h>
+#include <sys/unistat/spcs_s_u.h>
+#include <sys/unistat/spcs_s_impl.h>
+#include <sys/unistat/spcs_errors.h>
+
+#include <sys/nsctl/rdc_io.h>
+#include <sys/nsctl/rdc_ioctl.h>
+#include <sys/nsctl/rdc_prot.h>
+#include <sys/nsctl/librdc.h>
+#include <sys/nsctl/rdcerr.h>
+#include <sys/nsctl/cfg.h>
+
+#include <sys/unistat/spcs_dtrinkets.h>
+#include <sys/unistat/spcs_etrinkets.h>
+
+#include <sys/socket.h>
+#include <sys/mnttab.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netinet/tcp.h>
+#include <rpc/rpc_com.h>
+#include <rpc/rpc.h>
+
+#define RDC_LOCAL_TAG "local"
+
+/*
+ * bitmap_in_use
+ * return 1 if in use
+ * return 0 if not in use
+ * return -1 on error
+ */
+
+int
+bitmap_in_use(int cmd, char *hostp, char *bmp)
+{
+ int i, setnumber;
+ CFGFILE *cfg;
+ char host[CFG_MAX_BUF];
+ char shost[CFG_MAX_BUF];
+ char pri[CFG_MAX_BUF]; /* rdc primary vol */
+ char sec[CFG_MAX_BUF]; /* rdc secondary vol */
+ char sbm[CFG_MAX_BUF]; /* rdc secondary bitmap */
+ char bit[CFG_MAX_BUF]; /* a bitmap */
+ char mas[CFG_MAX_BUF]; /* II master */
+ char sha[CFG_MAX_BUF]; /* II shadow */
+ char mod[CFG_MAX_BUF]; /* II mode */
+ char ovr[CFG_MAX_BUF]; /* II overflow */
+ char buf[CFG_MAX_BUF];
+ char key[CFG_MAX_KEY];
+ int rc;
+ int ret = 0;
+
+
+ if ((cfg = cfg_open(NULL)) == NULL) {
+ rdc_set_error(NULL, RDC_DSCFG, 0, NULL);
+ return (-1);
+ }
+ if (!cfg_lock(cfg, CFG_RDLOCK)) {
+ rdc_set_error(NULL, RDC_DSCFG, 0, NULL);
+ cfg_close(cfg);
+ return (-1);
+ }
+
+ /*
+ * look into II config to see if this is being used elsewhere
+ */
+ /*CSTYLED*/
+ for (i = 0; ; i++) {
+ setnumber = i + 1;
+ snprintf(key, sizeof (key), "ii.set%d", setnumber);
+ if (cfg_get_cstring(cfg, key, buf, CFG_MAX_BUF) < 0)
+ break;
+
+ rc = sscanf(buf, "%s %s %s %s %s", mas, sha, bit, mod, ovr);
+ if (rc != 5) {
+ rdc_set_error(NULL, RDC_OS, 0, NULL);
+ ret = -1;
+ goto done;
+ }
+
+ /*
+ * got master shadow bitmap, now compare
+ */
+ if ((strcmp(bmp, mas) == 0) ||
+ (strcmp(bmp, sha) == 0) ||
+ (strcmp(bmp, bit) == 0) ||
+ (strcmp(bmp, ovr) == 0)) {
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ "bitmap %s is in use by"
+ "Point-in-Time Copy", bmp);
+ ret = 1;
+ goto done;
+ }
+ }
+ /*
+ * and last but not least, make sure sndr is not using vol for anything
+ */
+ /*CSTYLED*/
+ for (i = 0; ; i++) {
+ setnumber = i + 1;
+ snprintf(key, sizeof (key), "sndr.set%d", setnumber);
+ if (cfg_get_cstring(cfg, key, buf, CFG_MAX_BUF) < 0)
+ break;
+ /*
+ * I think this is quicker than
+ * having to double dip into the config
+ */
+ (void) sscanf(buf, "%s %s %s %s %s %s", host, pri, bit,
+ shost, sec, sbm);
+ if (cmd == RDC_CMD_ENABLE) {
+ if (self_check(host)) {
+ if ((strcmp(bmp, pri) == 0) ||
+ (strcmp(bmp, bit) == 0)) {
+ rdc_set_error(NULL, RDC_INTERNAL,
+ RDC_NONFATAL, dgettext("librdc",
+ "bitmap %s is in use by %s"),
+ bmp, RDC_NAME_DU_JOUR);
+
+
+ ret = 1;
+ goto done;
+ }
+ } else {
+ if ((strcmp(bmp, sec) == 0) ||
+ (strcmp(bmp, sbm) == 0)) {
+ rdc_set_error(NULL, RDC_INTERNAL,
+ RDC_NONFATAL, dgettext("librdc",
+ "bitmap %s is in use by %s"),
+ bmp, RDC_NAME_DU_JOUR);
+ ret = 1;
+ goto done;
+ }
+ }
+ } else if (cmd == RDC_CMD_RECONFIG) {
+
+ /*
+ * read this logic 1000 times and consider
+ * multi homed, one to many, many to one (marketing)
+ * etc, etc, before changing
+ */
+ if (self_check(hostp)) {
+ if (self_check(host)) {
+ if ((strcmp(bmp, pri) == 0) ||
+ (strcmp(bmp, bit) == 0)) {
+ rdc_set_error(NULL,
+ RDC_INTERNAL, RDC_NONFATAL,
+ dgettext("librdc", "bitmap"
+ " %s is in use by %s"),
+ bmp, RDC_NAME_DU_JOUR);
+ ret = 1;
+ goto done;
+ }
+ } else {
+ if ((strcmp(hostp, shost) == 0) &&
+ (strcmp(bmp, sec) == 0) ||
+ (strcmp(bmp, sbm) == 0)) {
+ rdc_set_error(NULL,
+ RDC_INTERNAL, RDC_NONFATAL,
+ dgettext("librdc", "bitmap"
+ " %s is in use by %s"),
+ bmp, RDC_NAME_DU_JOUR);
+ ret = 1;
+ goto done;
+ }
+ }
+ } else { /* self_check(hostp) failed */
+ if (self_check(host)) {
+ if ((strcmp(shost, hostp) == 0) &&
+ (strcmp(bmp, sec) == 0) ||
+ (strcmp(bmp, sbm) == 0)) {
+ rdc_set_error(NULL,
+ RDC_INTERNAL, RDC_NONFATAL,
+ dgettext("librdc", "bitmap"
+ " %s is in use by %s"),
+ bmp, RDC_NAME_DU_JOUR);
+ ret = 1;
+ goto done;
+ }
+ } else {
+ if ((strcmp(host, hostp) == 0) &&
+ (strcmp(bmp, pri) == 0) ||
+ (strcmp(bmp, bit) == 0)) {
+ rdc_set_error(NULL,
+ RDC_INTERNAL, RDC_NONFATAL,
+ dgettext("librdc", "bitmap"
+ " %s is in use by %s"),
+ bmp, RDC_NAME_DU_JOUR);
+ ret = 1;
+ goto done;
+ }
+ }
+ }
+
+ }
+
+ }
+done:
+ cfg_close(cfg);
+ return (ret);
+
+}
+
+int
+check_dgislocal(char *dgname)
+{
+ char *othernode;
+ int rc;
+
+ /*
+ * check where this disk service is mastered
+ */
+
+ rc = cfg_dgname_islocal(dgname, &othernode);
+ if (rc < 0) {
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ gettext("unable to find "
+ "disk service, %s: %s"), dgname, strerror(errno));
+ return (-1);
+ }
+
+ if (rc == 0) {
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ gettext("disk service, %s, is "
+ "active on node \"%s\"\nPlease re-issue "
+ "the command on that node"), dgname, othernode);
+ return (-1);
+ }
+ return (DCMD_OK);
+}
+
+int
+ctag_check(rdcconfig_t *rdc)
+{
+ char *file_dgname;
+ char *bmp_dgname;
+ char *fromhost, *tohost;
+ char *fromfile, *tofile;
+ char *frombitmap, *tobitmap;
+ char *localfile;
+ char *ctag;
+ char file_buf[MAX_RDC_HOST_SIZE];
+ char bmp_buf[MAX_RDC_HOST_SIZE];
+ int is_primary;
+ int islocal = 0;
+ struct hostent *hp;
+ char fromname[MAXHOSTNAMELEN], toname[MAXHOSTNAMELEN];
+
+ fromhost = rdc->phost;
+ fromfile = rdc->pfile;
+ frombitmap = rdc->pbmp;
+ tohost = rdc->shost;
+ tofile = rdc->sfile;
+ tobitmap = rdc->sbmp;
+ ctag = rdc->ctag;
+
+ /*
+ * Check for the special (local) cluster tag
+ */
+ if (!cfg_iscluster())
+ return (0);
+
+ if (ctag != NULL && strcmp(rdc->ctag, RDC_LOCAL_TAG) == 0) {
+ strcpy(rdc->ctag, "-");
+ islocal = TRUE;
+ } else {
+ islocal = FALSE;
+ }
+
+ hp = gethost_byname(fromhost);
+ strncpy(fromname, hp->h_name, MAXHOSTNAMELEN);
+ hp = gethost_byname(tohost);
+ strncpy(toname, hp->h_name, MAXHOSTNAMELEN);
+ if (!self_check(fromname) && !self_check(toname)) {
+ /*
+ * If we could get a list of logical hosts on this cluster
+ * then we could print something intelligent about where
+ * the volume is mastered. For now, just print some babble
+ * about the fact that we have no idea.
+ */
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ gettext("either %s:%s or %s:%s is not local"),
+ fromhost, fromfile, tohost, tofile);
+ return (-1);
+ }
+
+ is_primary = self_check(fromname);
+
+ /*
+ * If implicit disk group name and no ctag specified by user,
+ * we set the ctag to it.
+ * If implicit disk group name, it must match any supplied ctag.
+ */
+ if (is_primary)
+ localfile = fromfile;
+ else
+ localfile = tofile;
+ file_dgname = cfg_dgname(localfile, file_buf, sizeof (file_buf));
+ if (file_dgname != NULL && file_dgname[0] != '\0')
+ if (check_dgislocal(file_dgname) < 0) {
+ /* errors already set */
+ return (-1);
+ }
+
+ if (strlen(ctag) == 0 && file_dgname && strlen(file_dgname))
+ strncpy(ctag, file_dgname, MAX_RDC_HOST_SIZE);
+
+ /*
+ * making an exception here for users giving the "local"tag
+ * this overrides this error message. (rdc_islocal ! = 1)
+ */
+ if (strlen(ctag) != 0 && file_dgname && islocal != 1 &&
+ strlen(file_dgname) != 0 &&
+ strncmp(ctag, file_dgname, MAX_RDC_HOST_SIZE) != 0) {
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ gettext("ctag \"%s\" does not "
+ "match disk group name \"%s\" of volume %s"), ctag,
+ file_dgname, localfile);
+ return (-1);
+ }
+ if ((file_dgname == NULL) || ((strlen(ctag) == 0) &&
+ (strlen(file_dgname) == 0))) {
+ /*
+ * we must have a non-volume managed disk here
+ * so ask for a tag and get out
+ */
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ gettext("volume \"%s\" is not part"
+ " of a disk group,\nplease specify resource ctag\n"),
+ localfile);
+
+ }
+
+ /*
+ * Local bitmap must also have same ctag.
+ */
+ if (is_primary)
+ localfile = frombitmap;
+ else
+ localfile = tobitmap;
+ bmp_dgname = cfg_dgname(localfile, bmp_buf, sizeof (bmp_buf));
+ if (bmp_dgname != NULL && bmp_dgname[0] != '\0')
+ if (check_dgislocal(bmp_dgname) < 0) {
+ /* error already set */
+ return (-1);
+ }
+
+ if (file_dgname && strlen(file_dgname) != 0) {
+ /* File is in a real disk group */
+ if ((bmp_dgname == NULL) || (strlen(bmp_dgname) == 0)) {
+ /* Bitmap is not in a real disk group */
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ gettext("bitmap %s is not in disk group \"%s\""),
+ localfile, islocal < 1?file_dgname:ctag);
+ return (-1);
+ }
+ }
+ if (strlen(ctag) != 0 && bmp_dgname && islocal != 1 &&
+ strlen(bmp_dgname) != 0 &&
+ strncmp(ctag, bmp_dgname, MAX_RDC_HOST_SIZE) != 0) {
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ gettext("ctag \"%s\" does not "
+ "match disk group name \"%s\" of bitmap %s"),
+ ctag, bmp_dgname, localfile);
+ return (-1);
+ }
+
+ return (0);
+}
+int
+mounted(char *device)
+{
+ char target[NSC_MAXPATH];
+ struct mnttab mntref;
+ struct mnttab mntent;
+ FILE *mntfp;
+ int rdsk;
+ char *s;
+ int rc;
+ int i;
+
+ rdsk = i = 0;
+ for (s = target; i < NSC_MAXPATH && (*s = *device++); i++) {
+ if (*s == 'r' && rdsk == 0 && strncmp(device, "dsk/", 4) == 0)
+ rdsk = 1;
+ else
+ s++;
+ }
+ *s = '\0';
+
+ mntref.mnt_special = target;
+ mntref.mnt_mountp = NULL;
+ mntref.mnt_fstype = NULL;
+ mntref.mnt_mntopts = NULL;
+ mntref.mnt_time = NULL;
+
+ mntfp = fopen(MNTTAB, "r");
+
+ if (mntfp == NULL) {
+ /* Assume the worst, that it is mounted */
+ return (1);
+ }
+
+ if ((rc = getmntany(mntfp, &mntent, &mntref)) != -1) {
+ /* found something before EOF */
+ fclose(mntfp);
+ return (1);
+ }
+
+ fclose(mntfp);
+ return (0);
+}
+
+int
+can_enable(rdcconfig_t *rdc)
+{
+ struct stat stb;
+
+ if ((strcmp(rdc->pfile, rdc->pbmp) == 0) ||
+ (strcmp(rdc->sfile, rdc->sbmp) == 0)) {
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ dgettext("librdc", "volumes and bitmaps must not match"));
+ return (0);
+ }
+ if (ctag_check(rdc) < 0) {
+ /* rdc_error should already be set */
+ return (0);
+ }
+
+ if (self_check(rdc->phost)) {
+ if (stat(rdc->pfile, &stb) != 0) {
+ rdc_set_error(NULL, RDC_OS, RDC_FATAL, NULL);
+ return (0);
+ }
+ if (!S_ISCHR(stb.st_mode)) {
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ dgettext("librdc", "%s is not a character device"),
+ rdc->pfile);
+ return (0);
+ }
+ return (rdc->persist ?
+ !bitmap_in_use(RDC_CMD_ENABLE, rdc->phost, rdc->pbmp) : 1);
+ } else { /* on the secondary */
+ if (stat(rdc->sfile, &stb) != 0) {
+ rdc_set_error(NULL, RDC_OS, 0,
+ dgettext("librdc", "unable to access %s: %s"),
+ rdc->sfile, strerror(errno));
+ }
+ if (!S_ISCHR(stb.st_mode)) {
+ rdc_set_error(NULL, RDC_INTERNAL, RDC_NONFATAL,
+ dgettext("librdc",
+ "%s is not a character device"), rdc->sfile);
+ }
+ return (rdc->persist ?
+ !bitmap_in_use(RDC_CMD_ENABLE, rdc->shost, rdc->sbmp) : 1);
+ }
+}
+
+int
+can_reconfig_pbmp(rdcconfig_t *rdc, char *bmp)
+{
+ if (!rdc->persist)
+ return (0);
+
+ return (!bitmap_in_use(RDC_CMD_RECONFIG, rdc->phost, bmp));
+}
+
+int
+can_reconfig_sbmp(rdcconfig_t *rdc, char *bmp)
+{
+ if (!rdc->persist)
+ return (0);
+
+ return (!bitmap_in_use(RDC_CMD_RECONFIG, rdc->shost, bmp));
+}
+
+rdc_rc_t *
+cant_rsync(rdcconfig_t *rdc)
+{
+ rdc_rc_t *rc;
+
+ if (mounted(rdc->pfile)) {
+ rc = new_rc();
+ if (rc == NULL)
+ return (NULL);
+ strncpy(rc->set.phost, rdc->phost, MAX_RDC_HOST_SIZE);
+ strncpy(rc->set.pfile, rdc->pfile, NSC_MAXPATH);
+ strncpy(rc->set.pbmp, rdc->pbmp, NSC_MAXPATH);
+ strncpy(rc->set.shost, rdc->shost, MAX_RDC_HOST_SIZE);
+ strncpy(rc->set.sfile, rdc->sfile, NSC_MAXPATH);
+ strncpy(rc->set.sbmp, rdc->sbmp, NSC_MAXPATH);
+
+ rc->rc = -1;
+
+ rdc_set_error(NULL, RDC_INTERNAL, 0, "unable to sync %s volume"
+ " is currently mounted", rdc->pfile);
+ strncpy(rc->msg, rdc_error(NULL), RDC_ERR_SIZE);
+
+ return (rc);
+ }
+ return (NULL);
+}
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-30 16:25:17 +0000