diff options
Diffstat (limited to 'src/lib/confmgt')
| -rw-r--r-- | src/lib/confmgt/type_defs.c | 4 | ||||
| -rw-r--r-- | src/lib/confmgt/var_type_def_st.h | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/src/lib/confmgt/type_defs.c b/src/lib/confmgt/type_defs.c index 62c12fcddd..ed930fb02a 100644 --- a/src/lib/confmgt/type_defs.c +++ b/src/lib/confmgt/type_defs.c @@ -44,6 +44,10 @@ // CONFIG_TYPE_FILENAME // // These two types are the same for now, but they have different names. +// +// Warning: For this type, the default value (NULL) and "" are considered +// different values. That is generally risky, and best avoided for other +// types in the future. ////// static int diff --git a/src/lib/confmgt/var_type_def_st.h b/src/lib/confmgt/var_type_def_st.h index f1131ff116..2bf3d37cae 100644 --- a/src/lib/confmgt/var_type_def_st.h +++ b/src/lib/confmgt/var_type_def_st.h @@ -39,6 +39,12 @@ struct config_line_t; * All functions here take a <b>params</b> argument, whose value * is determined by the type definition. Two types may have the * same functions, but differ only in parameters. + * + * Implementation considerations: If "" encodes a valid value for a type, try + * to make sure that it encodes the same thing as the default value for the + * type (that is, the value that is set by config_clear() or memset(0)). If + * this is not the case, you need to make extra certain that your parse/encode + * implementations preserve the NULL/"" distinction. **/ struct var_type_fns_t { /** |