From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/fs/cifs/ioctl.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 100 insertions(+), 4 deletions(-)
diff --git a/kernel/fs/cifs/ioctl.c b/kernel/fs/cifs/ioctl.c
index 54f32f9..e45598b 100644
--- a/kernel/fs/cifs/ioctl.c
+++ b/kernel/fs/cifs/ioctl.c
@@ -32,7 +32,50 @@
#include "cifs_debug.h"
#include "cifsfs.h"
#include "cifs_ioctl.h"
+#include "smb2proto.h"
#include <linux/btrfs.h>
+
+static long cifs_ioctl_query_info(unsigned int xid, struct file *filep,
+ unsigned long p)
+{
+ struct inode *inode = file_inode(filep);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
+ struct dentry *dentry = filep->f_path.dentry;
+ unsigned char *path;
+ __le16 *utf16_path = NULL, root_path;
+ int rc = 0;
+
+ path = build_path_from_dentry(dentry);
+ if (path == NULL)
+ return -ENOMEM;
+
+ cifs_dbg(FYI, "%s %s\n", __func__, path);
+
+ if (!path[0]) {
+ root_path = 0;
+ utf16_path = &root_path;
+ } else {
+ utf16_path = cifs_convert_path_to_utf16(path + 1, cifs_sb);
+ if (!utf16_path) {
+ rc = -ENOMEM;
+ goto ici_exit;
+ }
+ }
+
+ if (tcon->ses->server->ops->ioctl_query_info)
+ rc = tcon->ses->server->ops->ioctl_query_info(
+ xid, tcon, cifs_sb, utf16_path,
+ filep->private_data ? 0 : 1, p);
+ else
+ rc = -EOPNOTSUPP;
+
+ ici_exit:
+ if (utf16_path != &root_path)
+ kfree(utf16_path);
+ kfree(path);
+ return rc;
+}
static long cifs_ioctl_copychunk(unsigned int xid, struct file *dst_file,
unsigned long srcfd)
@@ -121,17 +164,18 @@
long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
{
struct inode *inode = file_inode(filep);
+ struct smb3_key_debug_info pkey_inf;
int rc = -ENOTTY; /* strange error - but the precedent */
unsigned int xid;
- struct cifs_sb_info *cifs_sb;
struct cifsFileInfo *pSMBFile = filep->private_data;
struct cifs_tcon *tcon;
+ struct tcon_link *tlink;
+ struct cifs_sb_info *cifs_sb;
__u64 ExtAttrBits = 0;
__u64 caps;
xid = get_xid();
- cifs_sb = CIFS_SB(inode->i_sb);
cifs_dbg(FYI, "cifs ioctl 0x%x\n", command);
switch (command) {
case FS_IOC_GETFLAGS:
@@ -149,7 +193,7 @@
rc = put_user(ExtAttrBits &
FS_FL_USER_VISIBLE,
(int __user *)arg);
- if (rc != EOPNOTSUPP)
+ if (rc != -EOPNOTSUPP)
break;
}
#endif /* CONFIG_CIFS_POSIX */
@@ -178,7 +222,7 @@
* pSMBFile->fid.netfid,
* extAttrBits,
* &ExtAttrMask);
- * if (rc != EOPNOTSUPP)
+ * if (rc != -EOPNOTSUPP)
* break;
*/
@@ -195,6 +239,9 @@
break;
case CIFS_IOC_COPYCHUNK_FILE:
rc = cifs_ioctl_copychunk(xid, filep, arg);
+ break;
+ case CIFS_QUERY_INFO:
+ rc = cifs_ioctl_query_info(xid, filep, arg);
break;
case CIFS_IOC_SET_INTEGRITY:
if (pSMBFile == NULL)
@@ -226,6 +273,55 @@
else
rc = -EOPNOTSUPP;
break;
+ case CIFS_DUMP_KEY:
+ if (pSMBFile == NULL)
+ break;
+ if (!capable(CAP_SYS_ADMIN)) {
+ rc = -EACCES;
+ break;
+ }
+
+ tcon = tlink_tcon(pSMBFile->tlink);
+ if (!smb3_encryption_required(tcon)) {
+ rc = -EOPNOTSUPP;
+ break;
+ }
+ pkey_inf.cipher_type =
+ le16_to_cpu(tcon->ses->server->cipher_type);
+ pkey_inf.Suid = tcon->ses->Suid;
+ memcpy(pkey_inf.auth_key, tcon->ses->auth_key.response,
+ 16 /* SMB2_NTLMV2_SESSKEY_SIZE */);
+ memcpy(pkey_inf.smb3decryptionkey,
+ tcon->ses->smb3decryptionkey, SMB3_SIGN_KEY_SIZE);
+ memcpy(pkey_inf.smb3encryptionkey,
+ tcon->ses->smb3encryptionkey, SMB3_SIGN_KEY_SIZE);
+ if (copy_to_user((void __user *)arg, &pkey_inf,
+ sizeof(struct smb3_key_debug_info)))
+ rc = -EFAULT;
+ else
+ rc = 0;
+ break;
+ case CIFS_IOC_NOTIFY:
+ if (!S_ISDIR(inode->i_mode)) {
+ /* Notify can only be done on directories */
+ rc = -EOPNOTSUPP;
+ break;
+ }
+ cifs_sb = CIFS_SB(inode->i_sb);
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink)) {
+ rc = PTR_ERR(tlink);
+ break;
+ }
+ tcon = tlink_tcon(tlink);
+ if (tcon && tcon->ses->server->ops->notify) {
+ rc = tcon->ses->server->ops->notify(xid,
+ filep, (void __user *)arg);
+ cifs_dbg(FYI, "ioctl notify rc %d\n", rc);
+ } else
+ rc = -EOPNOTSUPP;
+ cifs_put_tlink(tlink);
+ break;
default:
cifs_dbg(FYI, "unsupported ioctl\n");
break;
--
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