stuff2

servers/unix/include/vfs.h

@@ -0,0 +1,86 @@
+#pragma once
+
+#include <zinnia/handle.h>
+#include <zinnia/status.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+struct file;
+struct inode;
+struct path;
+
+// struct file_ops {
+//     zn_status_t (*open)(struct file* self, uint32_t flags);
+//     zn_status_t (*close)(struct file* self);
+//     zn_status_t (*read)(struct file* self, struct iovec_iter* iter, ssize_t* out_read);
+//     zn_status_t (*write)(struct file* self, struct iovec_iter* iter, ssize_t* out_written);
+//     zn_status_t (*devctl)(struct file* self, uint32_t dcmd, void* data, size_t num, int* out_info);
+//     zn_status_t (*poll)(struct file* self, int16_t mask, int16_t* out_mask); // TODO: This is not correct.
+//     zn_status_t (*mmap)(
+//         struct file* self,
+//         zn_handle_t* space,
+//         void* addr,
+//         size_t len,
+//         int prot,
+//         int flags,
+//         off_t offset
+//     );
+// };
+
+struct file {
+    const struct file_ops* ops;
+    struct inode* inode;
+    uint32_t mode;
+    uint32_t flags;
+};
+
+struct file* file_alloc();
+struct file* file_from_fd(int fd);
+
+struct inode_ops {
+    union {
+        struct {
+            zn_status_t (*lookup)(struct inode* inode, struct path* path);
+        } dir;
+        struct {
+            zn_status_t (*truncate)(struct inode* inode);
+        } reg;
+    };
+};
+
+struct inode_attr {
+    struct timespec atime, mtime, ctime;
+    uid_t uid;
+    gid_t gid;
+};
+
+struct inode {
+    const struct inode_ops* ops;
+    struct inode_attr attr;
+};
+
+struct entry {
+    const char* name;
+    struct inode* inode;
+    uint8_t state;
+};
+
+struct path {
+    struct entry* entry;
+    struct mount* mount;
+};
+
+struct mount {
+    uint32_t flags;
+    struct entry root;
+    struct path mount_point;
+};
+
+struct file_system_ops {};
+
+struct file_system {
+    const char* name;
+    struct file_system_ops ops;
+};