From 5a914de9b6cb2fd66f4a2ba99ab7c9e2300f3ffa Mon Sep 17 00:00:00 2001
From: pl5jn4byo <2231260694@qq.com>
Date: Sun, 26 Jun 2022 22:11:20 +0800
Subject: [PATCH] ADD file via upload

---
 getdents.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 getdents.c

diff --git a/getdents.c b/getdents.c
new file mode 100644
index 0000000..2de944e
--- /dev/null
+++ b/getdents.c
@@ -0,0 +1,30 @@
+int sys_getdents(unsigned int fd, struct linux_dirent* dirp, unsigned int count)
+{
+	struct buffer_head* bh;
+	struct m_inode* inode = current->filp[fd]->f_inode;
+	struct linux_dirent m;
+	struct dir_entry* dir;
+	char* buf;
+	int k, n = 0, i;
+	if (count <= 0)return -1;
+	bh = bread(inode->i_dev, inode->i_zone[0]);
+	for (k = 0; k < inode->i_size; k += sizeof(struct linux_dirent))
+	{
+		if (n + sizeof(struct linux_dirent) > count)return 0;
+		dir = (struct dir_entry*)(bh->b_data + k);
+		if (dir->inode)
+		{
+			m.d_ino = dir->inode;
+			for (i = 0; i < NAME_LEN; i++)m.d_name[i] = dir->name[i];
+			m.d_off = 0;
+			m.d_reclen = sizeof(struct linux_dirent);
+			buf = &m;
+			for (i = 0; i < m.d_reclen; i++)
+				put_fs_byte(*(buf + i), (char*)(dirp)+n + i);
+			n += sizeof(struct linux_dirent);
+		}
+		else continue;
+	}
+	brelse(bh);
+	return n;
+}