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From bf6a05987a418e4d7eeb3a24f0912c5cfc9e533d Mon Sep 17 00:00:00 2001
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From: Chris Leech <cleech@redhat.com>
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Date: Tue, 13 Aug 2013 12:39:07 -0700
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Subject: [PATCH] idbw_rec_write, pick tpgt from existing record
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On a static add (-m node -o new) without a user specified tpgt, looks
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for existing new style records with tpgt before creating an old style
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record without. If one exists, take the tpgt from it an write an
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updated new style record instead.
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---
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usr/idbm.c | 40 ++++++++++++++++++++++++++++++++++++++++
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1 file changed, 40 insertions(+)
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diff --git a/usr/idbm.c b/usr/idbm.c
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index c29cbed..00955e4 100644
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--- a/usr/idbm.c
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+++ b/usr/idbm.c
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@@ -28,6 +28,7 @@
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#include <dirent.h>
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#include <limits.h>
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#include <fcntl.h>
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+#include <glob.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <inttypes.h>
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@@ -164,6 +165,8 @@ static struct idbm *db;
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_n++; \
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} while(0)
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+static int idbm_remove_disc_to_node_link(node_rec_t *rec, char *portal);
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+
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static void
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idbm_recinfo_discovery(discovery_rec_t *r, recinfo_t *ri)
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{
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@@ -2080,12 +2083,49 @@ static int idbm_rec_write_old(node_rec_t *rec)
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FILE *f;
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char *portal;
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int rc = 0;
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+ glob_t globbuf;
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+ int i;
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+ int tpgt = PORTAL_GROUP_TAG_UNKNOWN;
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portal = malloc(PATH_MAX);
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if (!portal) {
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log_error("Could not alloc portal");
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return ISCSI_ERR_NOMEM;
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}
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+
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+ /* check for newer portal dir with tpgt */
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+ snprintf(portal, PATH_MAX, "%s/%s/%s,%d,*", NODE_CONFIG_DIR,
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+ rec->name, rec->conn[0].address, rec->conn[0].port);
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+ rc = glob(portal, GLOB_ONLYDIR, NULL, &globbuf);
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+ if (!rc) {
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+ if (globbuf.gl_pathc > 1)
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+ log_warning("multiple tpg records for portal "
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+ "%s/%s:%d found", rec->name,
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+ rec->conn[0].address, rec->conn[0].port);
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+ /* set pattern for sscanf matching of tpgt */
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+ snprintf(portal, PATH_MAX, "%s/%s/%s,%d,%%u", NODE_CONFIG_DIR,
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+ rec->name, rec->conn[0].address, rec->conn[0].port);
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+ for (i = 0; i < globbuf.gl_pathc; i++) {
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+ rc = sscanf(globbuf.gl_pathv[i], portal, &tpgt);
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+ if (rc == 1)
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+ break;
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+ }
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+ if (tpgt == PORTAL_GROUP_TAG_UNKNOWN)
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+ log_warning("glob match on existing records, "
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+ "but no valid tpgt found");
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+ }
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+ globfree(&globbuf);
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+ rc = 0;
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+
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+ /* if a tpgt was selected from an old record, write entry in new format */
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+ if (tpgt != PORTAL_GROUP_TAG_UNKNOWN) {
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+ log_warning("using tpgt %u from existing record", tpgt);
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+ rec->tpgt = tpgt;
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+ rc = idbm_remove_disc_to_node_link(rec, portal);
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+ free(portal);
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+ return idbm_rec_write_new(rec);
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+ }
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+
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snprintf(portal, PATH_MAX, "%s/%s/%s,%d", NODE_CONFIG_DIR,
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rec->name, rec->conn[0].address, rec->conn[0].port);
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--
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2.21.0
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