[Patch] libcldc,cldcli: Use humanized error messages

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Signed-off-by: Pete Zaitcev <zaitcev@xxxxxxxxxx>

diff --git a/include/cld_msg.h b/include/cld_msg.h
index 01bda16..e4c8f28 100644
--- a/include/cld_msg.h
+++ b/include/cld_msg.h
@@ -257,5 +257,6 @@ struct cld_msg_event {
 
 extern unsigned long long cld_sid2llu(const uint8_t *sid);
 extern void __cld_rand64(void *p);
+extern const char *cld_errstr(enum cle_err_codes ecode);
 
 #endif /* __CLD_MSG_H__ */
diff --git a/lib/common.c b/lib/common.c
index fac652b..57f8696 100644
--- a/lib/common.c
+++ b/lib/common.c
@@ -19,3 +19,29 @@ void __cld_rand64(void *p)
 	v[1] = rand();
 }
 
+const char *cld_errstr(enum cle_err_codes ecode)
+{
+	switch (ecode) {
+	case CLE_OK:		return "Success";
+	case CLE_SESS_EXISTS:	return "Session exists";
+	case CLE_SESS_INVAL:	return "Invalid session";
+	case CLE_DB_ERR:	return "Database error";
+	case CLE_BAD_PKT:	return "Invalid/corrupted packet";
+	case CLE_INODE_INVAL:	return "Invalid inode number";
+	case CLE_NAME_INVAL:	return "Invalid file name";
+	case CLE_OOM:		return "Server out of memory";
+	case CLE_FH_INVAL:	return "Invalid file handle";
+	case CLE_DATA_INVAL:	return "Invalid data packet";
+	case CLE_LOCK_INVAL:	return "Invalid lock";
+	case CLE_LOCK_CONFLICT:	return "Conflicting lock held";
+	case CLE_LOCK_PENDING:	return "Lock waiting to be acquired";
+	case CLE_MODE_INVAL:	return "Operation incompatible with file mode";
+	case CLE_INODE_EXISTS:	return "File exists";
+	case CLE_DIR_NOTEMPTY:	return "Directory not empty";
+	case CLE_INTERNAL_ERR:	return "Internal error";
+	case CLE_TIMEOUT:	return "Session timed out";
+	case CLE_SIG_INVAL:	return "Bad HMAC signature";
+	default:		return "(unknown)";
+	}
+}
+
diff --git a/tools/cldcli.c b/tools/cldcli.c
index 635bc6e..eb4ebc4 100644
--- a/tools/cldcli.c
+++ b/tools/cldcli.c
@@ -66,9 +66,11 @@ struct creq {
 	struct cp_fc_info	*cfi;
 };
 
+enum { CRESP_MSGSZ = 64 };
+
 struct cresp {
 	enum thread_codes	tcode;
-	char			msg[64];
+	char			msg[CRESP_MSGSZ];
 	union {
 		size_t		file_len;
 		unsigned int	n_records;
@@ -117,31 +119,10 @@ static error_t parse_opt (int key, char *arg, struct argp_state *state);
 
 static const struct argp argp = { options, parse_opt, NULL, doc };
 
-static const char *names_cle_err[] = {
-	[CLE_OK]		= "CLE_OK",
-	[CLE_SESS_EXISTS]	= "CLE_SESS_EXISTS",
-	[CLE_SESS_INVAL]	= "CLE_SESS_INVAL",
-	[CLE_DB_ERR]		= "CLE_DB_ERR",
-	[CLE_BAD_PKT]		= "CLE_BAD_PKT",
-	[CLE_INODE_INVAL]	= "CLE_INODE_INVAL",
-	[CLE_NAME_INVAL]	= "CLE_NAME_INVAL",
-	[CLE_OOM]		= "CLE_OOM",
-	[CLE_FH_INVAL]		= "CLE_FH_INVAL",
-	[CLE_DATA_INVAL]	= "CLE_DATA_INVAL",
-	[CLE_LOCK_INVAL]	= "CLE_LOCK_INVAL",
-	[CLE_LOCK_CONFLICT]	= "CLE_LOCK_CONFLICT",
-	[CLE_LOCK_PENDING]	= "CLE_LOCK_PENDING",
-	[CLE_MODE_INVAL]	= "CLE_MODE_INVAL",
-	[CLE_INODE_EXISTS]	= "CLE_INODE_EXISTS",
-	[CLE_DIR_NOTEMPTY]	= "CLE_DIR_NOTEMPTY",
-	[CLE_INTERNAL_ERR]	= "CLE_INTERNAL_ERR",
-	[CLE_TIMEOUT]		= "CLE_TIMEOUT",
-	[CLE_SIG_INVAL]		= "CLE_SIG_INVAL",
-};
-
 static void errc_msg(struct cresp *cresp, enum cle_err_codes errc)
 {
-	strcpy(cresp->msg, names_cle_err[errc]);
+	strncpy(cresp->msg, cld_errstr(errc), CRESP_MSGSZ);
+	cresp->msg[CRESP_MSGSZ-1] = 0;
 }
 
 static void applog(int prio, const char *fmt, ...)
--
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