Increase LTTNG_HOST_NAME_MAX from 64 to 255

POSIX guarantees that a host name will not exceed 255 characters.
Moreover, RFC 1035 limits the length of a fully qualified domain name (FQDN)
to 255 characters.

This limit will be used as part of the lttngctl communication
protocol.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

diff --git a/include/lttng/constant.h b/include/lttng/constant.h
index 00074a2e43ec2ba68c0652f2991ab9b74fd39bf8..1235c346f5432865d18fe4c134cf4dfdd10e1b92 100644 (file)
--- a/include/lttng/constant.h
+++ b/include/lttng/constant.h
@@ -56,7 +56,14 @@
 
 #define LTTNG_NAME_MAX                         255
 
-#define LTTNG_HOST_NAME_MAX                    64
+/*
+ * POSIX guarantees that a host name will not exceed 255 characters.
+ * Moreover, RFC 1035 limits the length of a fully qualified domain name (FQDN)
+ * to 255 characters.
+ *
+ * 256 is used to include a trailing NULL character.
+ */
+#define LTTNG_HOST_NAME_MAX                    256
 
 #define LTTNG_PATH_MAX                         4096