Increase LTTNG_HOST_NAME_MAX from 64 to 255

[lttng-tools.git] / include / lttng / constant.h

diff --git a/include/lttng/constant.h b/include/lttng/constant.h
index ed3ebe073b25c973495d059372a8a32e8ce091d9..1235c346f5432865d18fe4c134cf4dfdd10e1b92 100644 (file)
--- a/include/lttng/constant.h
+++ b/include/lttng/constant.h
@@ -45,6 +45,26 @@
 /*
  * Event symbol length. Copied from LTTng kernel ABI.
  */
-#define LTTNG_SYMBOL_NAME_LEN             256
+#define LTTNG_SYMBOL_NAME_LEN                  256
+
+/*
+ * PROC(5) mentions that PID_MAX_LIMIT may not exceed 2^22 on 64-bit HW.
+ * We prefer to use 32-bits for simplicity's sake.
+ */
+#define LTTNG_MAX_PID                          INT32_MAX
+#define LTTNG_MAX_PID_STR                      "2147483647"
+
+#define LTTNG_NAME_MAX                         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.
+ *
+ * 256 is used to include a trailing NULL character.
+ */
+#define LTTNG_HOST_NAME_MAX                    256
+
+#define LTTNG_PATH_MAX                         4096
 
 #endif /* LTTNG_CONSTANT_H */