From 1daa8e62633344799127e011fcbb22e99ab7f617 Mon Sep 17 00:00:00 2001
From: Malo Lecomte <malo.lecomte@epita.fr>
Date: Sat, 23 Apr 2022 21:37:54 +0200
Subject: [PATCH] feat(iso): add close function

---
 k/fd.c  | 6 ++++--
 k/fd.h  | 5 +++--
 k/iso.c | 7 ++++++-
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/k/fd.c b/k/fd.c
index eaeddbb..63c7396 100644
--- a/k/fd.c
+++ b/k/fd.c
@@ -13,13 +13,14 @@ static int find_next_fd(void)
     return -1;
 }
 
-int register_fd(u32 lba)
+int register_fd(u32 lba, u32 file_size)
 {
     int free_fd = find_next_fd();
     if (free_fd < 0)
         return -1;
 
-    struct file_entry f = { .open = 1, .lba = lba, .file_offset = 0 };
+    struct file_entry f = { .open = 0, .lba = lba, .file_offset = 0,
+        .file_size = file_size };
     fd_table[free_fd] = f;
     return free_fd;
 }
@@ -32,6 +33,7 @@ int destroy_fd(int fd)
     fd_table[fd].open = 0;
     fd_table[fd].lba = 0;
     fd_table[fd].file_offset = 0;
+    fd_table[fd].file_size = 0;
 
     return 0;
 }
diff --git a/k/fd.h b/k/fd.h
index 2fb418c..be1db1a 100644
--- a/k/fd.h
+++ b/k/fd.h
@@ -9,10 +9,11 @@ struct file_entry
 {
     u8 open;
     u32 lba;
-    u64 file_offset;
+    u32 file_offset;
+    u32 file_size;
 };
 
-int register_fd(u32 lba);
+int register_fd(u32 lba, u32 file_size);
 int destroy_fd(int fd);
 
 #endif /* !FD_H */
diff --git a/k/iso.c b/k/iso.c
index 38111fd..c9bc8ca 100644
--- a/k/iso.c
+++ b/k/iso.c
@@ -49,7 +49,7 @@ int open(const char *pathname, int flags)
 
         // we found the file
         if (!length)
-            return register_fd(curr->data_blk.le);
+            return register_fd(curr->data_blk.le, curr->data_size.le);
 
         // iteration for one directory
         while (curr->dir_size != 0)
@@ -71,3 +71,8 @@ int open(const char *pathname, int flags)
 
     return -1;
 }
+
+int close(int fd)
+{
+    return destroy_fd(fd);
+}