Created student weenix repository

1 files changed, 53 insertions, 0 deletions

diff --git a/kernel/include/fs/s5fs/s5fs_subr.h b/kernel/include/fs/s5fs/s5fs_subr.h
new file mode 100644
index 0000000..ff4c570
--- /dev/null
+++ b/kernel/include/fs/s5fs/s5fs_subr.h
@@ -0,0 +1,53 @@
+/*
+ *   FILE: s5fs_subr.h
+ * AUTHOR: afenn
+ *  DESCR: S5 low-level subroutines
+ */
+
+#pragma once
+
+#include "types.h"
+#include "mm/pframe.h"
+#include "fs/s5fs/s5fs.h"
+
+struct s5fs;
+struct s5_node;
+
+long s5_alloc_inode(struct s5fs *s5fs, uint16_t type, devid_t devid);
+
+void s5_free_inode(struct s5fs *s5fs, ino_t ino);
+
+ssize_t s5_read_file(struct s5_node *sn, size_t pos, char *buf, size_t len);
+
+ssize_t s5_write_file(struct s5_node *sn, size_t pos, const char *buf,
+                      size_t len);
+
+long s5_link(struct s5_node *dir, const char *name, size_t namelen,
+             struct s5_node *child);
+
+long s5_find_dirent(struct s5_node *dir, const char *name, size_t namelen,
+                    size_t *filepos);
+
+void s5_remove_dirent(struct s5_node *dir, const char *name, size_t namelen,
+                      struct s5_node *ent);
+
+void s5_replace_dirent(struct s5_node *sn, const char *name, size_t namelen,
+                       struct s5_node *old, struct s5_node *new);
+
+long s5_file_block_to_disk_block(struct s5_node *sn, size_t file_blocknum,
+                                 int alloc, int *new);
+
+long s5_inode_blocks(struct s5_node *vnode);
+
+void s5_remove_blocks(struct s5_node *vnode);
+
+/* Converts a vnode_t* to the s5fs_t* (s5fs file system) struct */
+#define VNODE_TO_S5FS(vn) ((s5fs_t *)((vn)->vn_fs->fs_i))
+
+#ifdef OLD
+/* Converts an s5fs_t* to its memory object (the memory object of the block device) */
+#define S5FS_TO_VMOBJ(s5fs) (&(s5fs)->s5f_bdev->bd_mobj)
+#endif
+
+
+pframe_t *s5_cache_and_clear_block(mobj_t *mo, long block, long loc);