assert(m);
+ log_unit_trace(UNIT(m), "Processing implicit device dependencies");
+
p = get_mount_parameters(m);
- if (!p)
+ if (!p) {
+ log_unit_trace(UNIT(m), "Missing mount parameters, skipping implicit device dependencies");
return 0;
+ }
- if (!p->what)
+ if (!p->what) {
+ log_unit_trace(UNIT(m), "Missing mount source, skipping implicit device dependencies");
return 0;
+ }
- if (mount_is_bind(p))
+ if (mount_is_bind(p)) {
+ log_unit_trace(UNIT(m), "Mount unit is a bind mount, skipping implicit device dependencies");
return 0;
+ }
- if (!is_device_path(p->what))
+ if (!is_device_path(p->what)) {
+ log_unit_trace(UNIT(m), "Mount source is not a device path, skipping implicit device dependencies");
return 0;
+ }
/* /dev/root is a really weird thing, it's not a real device, but just a path the kernel exports for
* the root file system specified on the kernel command line. Ignore it here. */
- if (PATH_IN_SET(p->what, "/dev/root", "/dev/nfs"))
+ if (PATH_IN_SET(p->what, "/dev/root", "/dev/nfs")) {
+ log_unit_trace(UNIT(m), "Mount source is in /dev/root or /dev/nfs, skipping implicit device dependencies");
return 0;
+ }
- if (path_equal(m->where, "/"))
+ if (path_equal(m->where, "/")) {
+ log_unit_trace(UNIT(m), "Mount destination is '/', skipping implicit device dependencies");
return 0;
+ }
/* Mount units from /proc/self/mountinfo are not bound to devices by default since they're subject to
* races when mounts are established by other tools with different backing devices than what we
r = unit_add_node_dependency(UNIT(m), p->what, dep, mask);
if (r < 0)
return r;
+ if (r > 0)
+ log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(dep), p->what);
+
if (mount_propagate_stop(m)) {
r = unit_add_node_dependency(UNIT(m), p->what, UNIT_STOP_PROPAGATED_FROM, mask);
if (r < 0)
return r;
+ if (r > 0)
+ log_unit_trace(UNIT(m), "Added %s dependency on %s",
+ unit_dependency_to_string(UNIT_STOP_PROPAGATED_FROM), p->what);
}
- return unit_add_blockdev_dependency(UNIT(m), p->what, mask);
+ r = unit_add_blockdev_dependency(UNIT(m), p->what, mask);
+ if (r > 0)
+ log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(UNIT_AFTER), p->what);
+
+ return r;
}
static int mount_add_quota_dependencies(Mount *m) {
#define log_unit_warning_errno(unit, error, ...) log_unit_full_errno(unit, LOG_WARNING, error, __VA_ARGS__)
#define log_unit_error_errno(unit, error, ...) log_unit_full_errno(unit, LOG_ERR, error, __VA_ARGS__)
+#if LOG_TRACE
+# define log_unit_trace(...) log_unit_debug(__VA_ARGS__)
+# define log_unit_trace_errno(...) log_unit_debug_errno(__VA_ARGS__)
+#else
+# define log_unit_trace(...) do {} while (0)
+# define log_unit_trace_errno(e, ...) (-ERRNO_VALUE(e))
+#endif
+
#define log_unit_struct_errno(unit, level, error, ...) \
({ \
const Unit *_u = (unit); \