Backport parse_bool

Author: ssahani

src/share/conf-parser.c

@@ -479,3 +479,35 @@ int config_parse_string(
 
         return 0;
 }
+
+int config_parse_bool(
+                const char* unit,
+                const char *filename,
+                unsigned line,
+                const char *section,
+                unsigned section_line,
+                const char *lvalue,
+                int ltype,
+                const char *rvalue,
+                void *data,
+                void *userdata) {
+
+        bool fatal = ltype;
+        bool *b = data;
+        int k;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+
+        k = parse_boolean(rvalue);
+        if (k < 0) {
+                log_syntax(unit, fatal ? LOG_ERR : LOG_WARNING, filename, line, k,
+                           "Failed to parse boolean value%s: %s",
+                           fatal ? "" : ", ignoring", rvalue);
+                return fatal ? -ENOEXEC : 0;
+        }
+
+        *b = k;
+        return 0;
+}

src/share/conf-parser.h

@@ -88,6 +88,7 @@ int config_parse_many(const char *conf_file,      /* possibly NULL */
 
 /* Generic parsers */
 int config_parse_string(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_bool(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 
 #define DEFINE_CONFIG_PARSE_ENUM(function,name,type,msg)                \
         int function(const char *unit,                                  \