From b633ed5ee189f9772d3f8ec19f993271d5fc63fb Mon Sep 17 00:00:00 2001
From: William Dauchy <william@gandi.net>
Date: Thu, 5 Jan 2012 11:42:10 +0100
Subject: [PATCH 1/2] Add a function to retrieve the logical unit id from a
 name

---
 usr/src/lib/libstmf/common/libstmf.h    |   1 +
 usr/src/lib/libstmf/common/mapfile-vers |   1 +
 usr/src/lib/libstmf/common/stmf.c       | 112 ++++++++++++++++++++++++++++++++
 3 files changed, 114 insertions(+)

diff --git a/usr/src/lib/libstmf/common/libstmf.h b/usr/src/lib/libstmf/common/libstmf.h
index f9d05ad..f6e9496 100644
--- a/usr/src/lib/libstmf/common/libstmf.h
+++ b/usr/src/lib/libstmf/common/libstmf.h
@@ -381,6 +381,7 @@ int stmfSetProviderData(char *providerName, nvlist_t *nvl, int providerType);
 int stmfSetProviderDataProt(char *providerName, nvlist_t *nvl,
     int providerType, uint64_t *setToken);
 int stmfValidateView(stmfViewEntry *viewEntry);
+int stmfGetLuGuidByName(const char *fname, char *luGuid, size_t luGuidLen);
 int stmfSetStmfProp(uint8_t propType, char *propVal);
 int stmfGetStmfProp(uint8_t propType, char *propVal, size_t *propLen);
 int stmfLoadStmfProps(void);
diff --git a/usr/src/lib/libstmf/common/mapfile-vers b/usr/src/lib/libstmf/common/mapfile-vers
index ade03df..0c37e0c 100644
--- a/usr/src/lib/libstmf/common/mapfile-vers
+++ b/usr/src/lib/libstmf/common/mapfile-vers
@@ -95,6 +95,7 @@ SYMBOL_VERSION SUNW_1.1 {
 	    stmfSetStmfProp;
 	    stmfGetStmfProp;
             stmfValidateView;
+	    stmfGetLuGuidByName;
 	local:
 		*;
 };
diff --git a/usr/src/lib/libstmf/common/stmf.c b/usr/src/lib/libstmf/common/stmf.c
index e12c189..0a25ec6 100644
--- a/usr/src/lib/libstmf/common/stmf.c
+++ b/usr/src/lib/libstmf/common/stmf.c
@@ -6947,3 +6947,115 @@ stmfValidateView(stmfViewEntry *viewEntry)
 
 	return (ret);
 }
+
+/*
+ * getDiskAllPropsByName
+ *
+ * Purpose: load all disk properties from a sdb driver
+ *
+ * fname - name of the disk device for which properties are to be retrieved
+ * hdl - allocated luResource into which properties are to be copied
+ */
+static int
+getDiskAllPropsByName(const char* fname, luResource *hdl)
+{
+	int ret = STMF_STATUS_SUCCESS;
+	int fd;
+	sbd_lu_props_t *sbdProps;
+	int ioctlRet;
+	int savedErrno;
+	int sbdPropsSize = sizeof (*sbdProps) + MAX_SBD_PROPS;
+	stmf_iocdata_t sbdIoctl = {0};
+
+	int fnameSize = 0;
+	int bufOffset = 0;
+
+	if (fname) {
+		   fnameSize = strlen(fname) + 1;
+		   sbdPropsSize += fnameSize;
+	}
+
+	if ((ret = openSbd(OPEN_SBD, &fd)) != STMF_STATUS_SUCCESS)
+		return (ret);
+
+	sbdProps = calloc(1, sbdPropsSize);
+	if (sbdProps == NULL) {
+		free(*hdl);
+		(void) close(fd);
+		return (STMF_ERROR_NOMEM);
+	}
+
+	sbdProps->slp_data_fname_valid = 1;
+	bcopy(fname, &(sbdProps->slp_buf[bufOffset]), fnameSize);
+
+	sbdIoctl.stmf_version = STMF_VERSION_1;
+	sbdIoctl.stmf_ibuf_size = sbdPropsSize;
+	sbdIoctl.stmf_ibuf = (uint64_t)(unsigned long)sbdProps;
+	sbdIoctl.stmf_obuf_size = sbdPropsSize;
+	sbdIoctl.stmf_obuf = (uint64_t)(unsigned long)sbdProps;
+	ioctlRet = ioctl(fd, SBD_IOCTL_GET_LU_PROPS, &sbdIoctl);
+	if (ioctlRet != 0) {
+		savedErrno = errno;
+		switch (savedErrno) {
+			case EBUSY:
+				ret = STMF_ERROR_BUSY;
+				break;
+			case EPERM:
+			case EACCES:
+				ret = STMF_ERROR_PERM;
+				break;
+			case ENOENT:
+				ret = STMF_ERROR_NOT_FOUND;
+				break;
+			default:
+				syslog(LOG_DEBUG,
+				    "getDiskAllProps:ioctl error(%d) (%d) (%d)",
+				    ioctlRet, sbdIoctl.stmf_error, savedErrno);
+				ret = STMF_STATUS_ERROR;
+				break;
+		}
+	}
+	if (ret == STMF_STATUS_SUCCESS) {
+		ret = stmfCreateLuResource(STMF_DISK, hdl);
+		if (ret != STMF_STATUS_SUCCESS) {
+			hdl = NULL;
+			return (ret);
+		}
+		ret = loadDiskPropsFromDriver((luResourceImpl *)*hdl, sbdProps);
+	}
+
+	free(sbdProps);
+	(void) close(fd);
+	return (ret);
+}
+
+/*
+ * stmfGetLuGuidByName
+ *
+ * Purpose: Get a logical unit id from a logical unit name
+ *
+ * fname
+ */
+int
+stmfGetLuGuidByName(const char *fname, char *luGuid, size_t luGuidSize)
+{
+	luResource hdl = NULL;
+	int ret;
+
+	if (luGuidSize <= LU_ASCII_GUID_SIZE) {
+		return (STMF_ERROR_SIZE_OUT_OF_RANGE);
+	}
+
+	ret = getDiskAllPropsByName(fname, &hdl);
+	if (ret != STMF_STATUS_SUCCESS) {
+		return (ret);
+	}
+
+	ret = stmfGetLuProp(hdl, STMF_LU_PROP_GUID, luGuid, &luGuidSize);
+	if (ret != STMF_STATUS_SUCCESS) {
+		(void) stmfFreeLuResource(hdl);
+		return (ret);
+	}
+	(void) stmfFreeLuResource(hdl);
+	return (STMF_STATUS_SUCCESS);
+}
-- 
2.4.6