conf-parser: don't unescape parsed configuration strings by default

In many cases this might have a negative effect since we drop escaping
from strings where we better shouldn't have dropped it.

If unescaping makes sense for some settings we can readd it later again,
on a per-case basis.

https://bugs.freedesktop.org/show_bug.cgi?id=54522

src/core/service.c

@@ -932,7 +932,6 @@ static int service_load_sysv_path(Service *s, const char *path) {
                 s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
         }
 
-
         /* Special setting for all SysV services */
         s->type = SERVICE_FORKING;
         s->remain_after_exit = !s->pid_file;

src/core/unit.c

@@ -2675,16 +2675,18 @@ int unit_add_node_link(Unit *u, const char *what, bool wants) {
 
         r = manager_load_unit(u->manager, e, NULL, NULL, &device);
         free(e);
-
         if (r < 0)
                 return r;
 
-        if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BINDS_TO, device, true)) < 0)
+        r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BINDS_TO, device, true);
+        if (r < 0)
                 return r;
 
-        if (wants)
-                if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0)
+        if (wants) {
+                r = unit_add_dependency(device, UNIT_WANTS, u, false);
+                if (r < 0)
                         return r;
+        }
 
         return 0;
 }

src/shared/conf-parser.c

@@ -593,7 +593,7 @@ int config_parse_string(
         assert(rvalue);
         assert(data);
 
-        n = cunescape(rvalue);
+        n = strdup(rvalue);
         if (!n)
                 return -ENOMEM;
 

src/shared/util.c

@@ -4097,6 +4097,8 @@ static char *tag_to_udev_node(const char *tagvalue, const char *by) {
 }
 
 char *fstab_node_to_udev_node(const char *p) {
+        assert(p);
+
         if (startswith(p, "LABEL="))
                 return tag_to_udev_node(p+6, "label");