From: Daniel Wagner <dwagner@suse.de>
Date: Wed, 31 Jan 2024 11:37:10 +0000 (+0100)
Subject: nvme: allow to overwrite hostnqn and hostid
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=dfb421ab2fc2b2074b28d3545769e3c21aaf5e87;p=users%2Fsagi%2Flibnvme.git

nvme: allow to overwrite hostnqn and hostid

In order to be able to test the topology scan code, allow
hostnqn and hostid to be controlled via an environment variable.

This is just for testing purposes, thus don't mention it.

Signed-off-by: Daniel Wagner <dwagner@suse.de>
---

diff --git a/src/nvme/fabrics.c b/src/nvme/fabrics.c
index 981fc442..1f50229f 100644
--- a/src/nvme/fabrics.c
+++ b/src/nvme/fabrics.c
@@ -1416,11 +1416,21 @@ static char *nvmf_read_file(const char *f, int len)
 
 char *nvmf_hostnqn_from_file()
 {
+	char *hostnqn = getenv("LIBNVME_HOSTNQN");
+
+	if (hostnqn)
+		return strdup(hostnqn);
+
 	return nvmf_read_file(NVMF_HOSTNQN_FILE, NVMF_NQN_SIZE);
 }
 
 char *nvmf_hostid_from_file()
 {
+	char *hostid = getenv("LIBNVME_HOSTID");
+
+	if (hostid)
+		return strdup(hostid);
+
 	return nvmf_read_file(NVMF_HOSTID_FILE, NVMF_HOSTID_SIZE);
 }