7 files changed, 219 insertions, 0 deletions
diff --git a/src/loop/CMakeLists.txt b/src/loop/CMakeLists.txt
new file mode 100644
index 0000000..4645d01
--- /dev/null
+++ b/src/loop/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(loop)
+add_subdirectory(src)
+target_include_directories(loop PUBLIC include PRIVATE private_include)
+target_link_libraries(loop PUBLIC aio PRIVATE fs init)
diff --git a/src/loop/include/loop.h b/src/loop/include/loop.h
new file mode 100644
index 0000000..dd833d1
--- /dev/null
+++ b/src/loop/include/loop.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LOOP_H
+#define LOOP_H
+
+#include <aio.h>
+
+int loop_run(void);
+int loop_add_aio(struct aio *a);
+int loop_rm_aio(struct aio *a);
+
+#endif
diff --git a/src/loop/private_include/loop/types.h b/src/loop/private_include/loop/types.h
new file mode 100644
index 0000000..d42a042
--- /dev/null
+++ b/src/loop/private_include/loop/types.h
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LOOP_TYPES_H
+#define LOOP_TYPES_H
+
+#include <aio.h>
+
+struct aio_poll *loop_aio_head, *loop_aio_tail;
+
+#endif
diff --git a/src/loop/src/CMakeLists.txt b/src/loop/src/CMakeLists.txt
new file mode 100644
index 0000000..ab55275
--- /dev/null
+++ b/src/loop/src/CMakeLists.txt
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(loop PRIVATE
+    add_aio.c
+    rm_aio.c
+    run.c
+)
diff --git a/src/loop/src/add_aio.c b/src/loop/src/add_aio.c
new file mode 100644
index 0000000..8174acc
--- /dev/null
+++ b/src/loop/src/add_aio.c
@@ -0,0 +1,43 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <loop.h>
+#include <loop/types.h>
+#include <aio.h>
+#include <stdlib.h>
+
+int loop_add_aio(struct aio *const a)
+{
+    struct aio_poll *const p = malloc(sizeof *p);
+
+    if (!p)
+        return -1;
+
+    *p = (const struct aio_poll){.aio = a};
+
+    if (!loop_aio_head)
+        loop_aio_head = p;
+    else if (loop_aio_tail)
+    {
+        loop_aio_tail->next = p;
+        p->prev = loop_aio_tail;
+    }
+
+    loop_aio_tail = p;
+    return 0;
+}
diff --git a/src/loop/src/rm_aio.c b/src/loop/src/rm_aio.c
new file mode 100644
index 0000000..b6c678a
--- /dev/null
+++ b/src/loop/src/rm_aio.c
@@ -0,0 +1,48 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <loop.h>
+#include <loop/types.h>
+#include <aio.h>
+#include <stdlib.h>
+
+int loop_rm_aio(struct aio *const aio)
+{
+    for (struct aio_poll *p = loop_aio_head; p; p = p->next)
+        if (p->aio == aio)
+        {
+            struct aio_poll *const prev = p->prev, *const next = p->next;
+
+            if (!prev)
+            {
+                loop_aio_head = next;
+
+                if (next)
+                    next->prev = NULL;
+            }
+            else if ((prev->next = next))
+                next->prev = prev;
+            else
+                loop_aio_tail = prev;
+
+            free(p);
+            return 0;
+        }
+
+    return -1;
+}
diff --git a/src/loop/src/run.c b/src/loop/src/run.c
new file mode 100644
index 0000000..666aa33
--- /dev/null
+++ b/src/loop/src/run.c
@@ -0,0 +1,33 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <loop.h>
+#include <loop/types.h>
+#include <aio.h>
+#include <fs/fs.h>
+#include <init.h>
+
+int loop_run(void)
+{
+    if (fs_update()
+        || aio_poll(loop_aio_head, 0) < 0
+        || init_run())
+        return -1;
+
+    return 0;
+}