From 477f97e918f2d6b06df4c7ccea1c2cfbc56690bf Mon Sep 17 00:00:00 2001
From: pt7yg3sn6 <3081545786@qq.com>
Date: Thu, 8 Jul 2021 23:53:03 +0800
Subject: [PATCH] ADD file via upload

---
 getdents.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 getdents.c

diff --git a/getdents.c b/getdents.c
new file mode 100644
index 0000000..edfcce8
--- /dev/null
+++ b/getdents.c
@@ -0,0 +1,46 @@
+#define __LIBRARY__
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <string.h>
+#include <asm/segment.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+struct linux_dirent {
+	long           	d_ino;
+	off_t          	d_off;
+	unsigned short 	d_reclen;
+	char 			d_name[14];
+};
+
+int sys_getdents(unsigned int fd, struct linux_dirent *dirp, unsigned int count)
+{
+    struct m_inode *m_ino;
+    struct buffer_head *buff_hd;
+    struct dir_entry *dir;
+    struct linux_dirent usr;
+    int i, j, res;
+    i = 0;
+    res = 0;
+    m_ino = current->filp[fd]->f_inode;
+    buff_hd = bread(m_ino->i_dev, m_ino->i_zone[0]);
+    dir = (struct dir_entry *)buff_hd->b_data;
+    while (dir[i].inode > 0)
+    {
+        if (res + sizeof(struct linux_dirent) > count)
+            break;
+        usr.d_ino = dir[i].inode;
+        usr.d_off = 0;
+        usr.d_reclen = sizeof(struct linux_dirent);
+        for (j = 0; j < 14; j++)
+        {
+            usr.d_name[j] = dir[i].name[j];
+        }
+        for(j = 0;j <sizeof(struct linux_dirent); j++){
+            put_fs_byte(((char *)(&usr))[j],(char *)dirp + res);
+            res++;
+        }
+        i++;
+    }
+    return res;
+}
\ No newline at end of file