feat: taskfs for export process to filesystem

[lunaix-os.git] / lunaix-os / kernel / process / task_attr.c

diff --git a/lunaix-os/kernel/process/task_attr.c b/lunaix-os/kernel/process/task_attr.c
new file mode 100644 (file)
index 0000000..f90ed35
--- /dev/null
+++ b/lunaix-os/kernel/process/task_attr.c
@@ -0,0 +1,100 @@
+#include <lunaix/fs/taskfs.h>
+
+void
+__read_pending_sig(struct twimap* map)
+{
+    struct proc_info* proc = twimap_data(map, struct proc_info*);
+    twimap_printf(map, "%bb", proc->sig_pending);
+}
+
+void
+__read_masked_sig(struct twimap* map)
+{
+    struct proc_info* proc = twimap_data(map, struct proc_info*);
+    twimap_printf(map, "%bb", proc->sig_mask);
+}
+
+void
+__read_parent(struct twimap* map)
+{
+    struct proc_info* proc = twimap_data(map, struct proc_info*);
+    twimap_printf(map, "%d", proc->parent->pid);
+}
+
+void
+__read_ctimestamp(struct twimap* map)
+{
+    struct proc_info* proc = twimap_data(map, struct proc_info*);
+    twimap_printf(map, "%d", proc->created);
+}
+
+void
+__read_pgid(struct twimap* map)
+{
+    struct proc_info* proc = twimap_data(map, struct proc_info*);
+    twimap_printf(map, "%d", proc->pgid);
+}
+
+void
+__read_children(struct twimap* map)
+{
+    struct proc_info* proc = twimap_index(map, struct proc_info*);
+    if (!proc)
+        return;
+    twimap_printf(map, "%d ", proc->pid);
+}
+
+int
+__next_children(struct twimap* map)
+{
+    struct proc_info* proc = twimap_index(map, struct proc_info*);
+    if (!proc)
+        return 0;
+    map->index = container_of(proc->siblings.next, struct proc_info, siblings);
+    if (map->index == proc) {
+        return 0;
+    }
+    return 1;
+}
+
+void
+__reset_children(struct twimap* map)
+{
+    struct proc_info* proc = twimap_data(map, struct proc_info*);
+    if (llist_empty(&proc->children)) {
+        map->index = 0;
+        return;
+    }
+    map->index = container_of(proc->children.next, struct proc_info, siblings);
+}
+
+void
+export_task_attr()
+{
+    struct twimap* map;
+    map = twimap_create(NULL);
+    map->read = __read_pending_sig;
+    taskfs_export_attr("sig_pending", map);
+
+    map = twimap_create(NULL);
+    map->read = __read_masked_sig;
+    taskfs_export_attr("sig_masked", map);
+
+    map = twimap_create(NULL);
+    map->read = __read_parent;
+    taskfs_export_attr("parent", map);
+
+    map = twimap_create(NULL);
+    map->read = __read_ctimestamp;
+    taskfs_export_attr("created", map);
+
+    map = twimap_create(NULL);
+    map->read = __read_pgid;
+    taskfs_export_attr("pgid", map);
+
+    map = twimap_create(NULL);
+    map->read = __read_children;
+    map->go_next = __next_children;
+    map->reset = __reset_children;
+    taskfs_export_attr("children", map);
+}
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