udev: set errno = ENOSYS for removed interfaces

[elogind.git] / src / job.h

diff --git a/src/job.h b/src/job.h
index 2499e6492a9b7b0d66563623c0122d21a8b6ad1e..60a43e074d4e52ea916a5891658f343bf4199dfb 100644 (file)
--- a/src/job.h
+++ b/src/job.h
@@ -24,18 +24,21 @@
 
 #include <stdbool.h>
 #include <inttypes.h>
+#include <errno.h>
 
 typedef struct Job Job;
 typedef struct JobDependency JobDependency;
 typedef enum JobType JobType;
 typedef enum JobState JobState;
 typedef enum JobMode JobMode;
+typedef enum JobResult JobResult;
 
 #include "manager.h"
 #include "unit.h"
 #include "hashmap.h"
 #include "list.h"
 
+/* Be careful when changing the job types! Adjust job_merging_table[] accordingly! */
 enum JobType {
         JOB_START,                  /* if a unit does not support being started, we'll just wait until it becomes active */
         JOB_VERIFY_ACTIVE,
@@ -63,14 +66,26 @@ enum JobState {
 };
 
 enum JobMode {
-        JOB_FAIL,
-        JOB_REPLACE,
-        JOB_ISOLATE,
-        JOB_IGNORE_DEPENDENCIES,
+        JOB_FAIL,                /* Fail if a conflicting job is already queued */
+        JOB_REPLACE,             /* Replace an existing conflicting job */
+        JOB_ISOLATE,             /* Start a unit, and stop all others */
+        JOB_IGNORE_DEPENDENCIES, /* Ignore both requirement and ordering dependencies */
+        JOB_IGNORE_REQUIREMENTS, /* Ignore requirement dependencies */
         _JOB_MODE_MAX,
         _JOB_MODE_INVALID = -1
 };
 
+enum JobResult {
+        JOB_DONE,
+        JOB_CANCELED,
+        JOB_TIMEOUT,
+        JOB_FAILED,
+        JOB_DEPENDENCY,
+        JOB_SKIPPED,
+        _JOB_RESULT_MAX,
+        _JOB_RESULT_INVALID = -1
+};
+
 struct JobDependency {
         /* Encodes that the 'subject' job needs the 'object' job in
          * some way. This structure is used only while building a transaction. */
@@ -110,14 +125,15 @@ struct Job {
         DBusConnection *bus;
         char *bus_client;
 
+        JobResult result;
+
         bool installed:1;
         bool in_run_queue:1;
         bool matters_to_anchor:1;
         bool override:1;
         bool in_dbus_queue:1;
         bool sent_dbus_new_signal:1;
-        bool failed:1;
-        bool ignore_deps:1;
+        bool ignore_order:1;
 };
 
 Job* job_new(Manager *m, JobType type, Unit *unit);
@@ -131,10 +147,29 @@ bool job_is_anchor(Job *j);
 
 int job_merge(Job *j, Job *other);
 
-int job_type_merge(JobType *a, JobType b);
-bool job_type_is_mergeable(JobType a, JobType b);
-bool job_type_is_superset(JobType a, JobType b);
-bool job_type_is_conflicting(JobType a, JobType b);
+JobType job_type_lookup_merge(JobType a, JobType b);
+
+static inline int job_type_merge(JobType *a, JobType b) {
+        JobType t = job_type_lookup_merge(*a, b);
+        if (t < 0)
+                return -EEXIST;
+        *a = t;
+        return 0;
+}
+
+static inline bool job_type_is_mergeable(JobType a, JobType b) {
+        return job_type_lookup_merge(a, b) >= 0;
+}
+
+static inline bool job_type_is_conflicting(JobType a, JobType b) {
+        return !job_type_is_mergeable(a, b);
+}
+
+static inline bool job_type_is_superset(JobType a, JobType b) {
+        /* Checks whether operation a is a "superset" of b in its actions */
+        return a == job_type_lookup_merge(a, b);
+}
+
 bool job_type_is_redundant(JobType a, UnitActiveState b);
 
 bool job_is_runnable(Job *j);
@@ -146,7 +181,7 @@ int job_start_timer(Job *j);
 void job_timer_event(Job *j, uint64_t n_elapsed, Watch *w);
 
 int job_run_and_invalidate(Job *j);
-int job_finish_and_invalidate(Job *j, bool success);
+int job_finish_and_invalidate(Job *j, JobResult result);
 
 char *job_dbus_path(Job *j);
 
@@ -159,4 +194,7 @@ JobState job_state_from_string(const char *s);
 const char* job_mode_to_string(JobMode t);
 JobMode job_mode_from_string(const char *s);
 
+const char* job_result_to_string(JobResult t);
+JobResult job_result_from_string(const char *s);
+
 #endif