From 3da9e27190076c7e343c93b2c0a7bf907b64fd1c Mon Sep 17 00:00:00 2001
From: Rodrigo Arias <rodrigo.arias@bsc.es>
Date: Thu, 16 Feb 2023 16:54:25 +0100
Subject: [PATCH] Skip "loom." prefix from hostname

---
 src/emu/loom.c   |  7 +++++--
 test/unit/loom.c | 13 +++++++++++++
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/emu/loom.c b/src/emu/loom.c
index b1f54ef..7b9d99e 100644
--- a/src/emu/loom.c
+++ b/src/emu/loom.c
@@ -13,13 +13,16 @@
 static void
 set_hostname(char host[PATH_MAX], const char name[PATH_MAX])
 {
+	/* Skip prefix */
+	const char *start = name + strlen("loom.");
+
 	/* Copy until dot or end */
 	int i;
 	for (i = 0; i < PATH_MAX - 1; i++) {
-		if (name[i] == '.' || name[i] == '\0')
+		if (start[i] == '.' || start[i] == '\0')
 			break;
 
-		host[i] = name[i];
+		host[i] = start[i];
 	}
 
 	host[i] = '\0';
diff --git a/test/unit/loom.c b/test/unit/loom.c
index cd414e2..51377ff 100644
--- a/test/unit/loom.c
+++ b/test/unit/loom.c
@@ -34,6 +34,18 @@ test_bad_name(struct loom *loom)
 	err("ok");
 }
 
+static void
+test_hostname(struct loom *loom)
+{
+	if (loom_init_begin(loom, "loom.node1.blah") != 0)
+		die("loom_init_begin failed");
+
+	if (strcmp(loom->hostname, "node1") != 0)
+		die("wrong hostname: %s", loom->hostname);
+
+	err("ok");
+}
+
 static void
 test_negative_cpu(struct loom *loom)
 {
@@ -125,6 +137,7 @@ int main(void)
 	struct loom loom;
 
 	test_bad_name(&loom);
+	test_hostname(&loom);
 	test_negative_cpu(&loom);
 	test_duplicate_cpus(&loom);
 	//test_sort_cpus(&loom);