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/link.c | 65 +++++++++++++++++---------------
1 files changed, 34 insertions(+), 31 deletions(-)
diff --git a/kernel/fs/cifs/link.c b/kernel/fs/cifs/link.c
index 2148b0f..4fc6eb8 100644
--- a/kernel/fs/cifs/link.c
+++ b/kernel/fs/cifs/link.c
@@ -97,15 +97,18 @@
if (rc != 1)
return -EINVAL;
+ if (link_len > CIFS_MF_SYMLINK_LINK_MAXLEN)
+ return -EINVAL;
+
rc = symlink_hash(link_len, link_str, md5_hash);
if (rc) {
cifs_dbg(FYI, "%s: MD5 hash failure: %d\n", __func__, rc);
return rc;
}
- snprintf(md5_str2, sizeof(md5_str2),
- CIFS_MF_SYMLINK_MD5_FORMAT,
- CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
+ scnprintf(md5_str2, sizeof(md5_str2),
+ CIFS_MF_SYMLINK_MD5_FORMAT,
+ CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
if (strncmp(md5_str1, md5_str2, 17) != 0)
return -EINVAL;
@@ -142,10 +145,10 @@
return rc;
}
- snprintf(buf, buf_len,
- CIFS_MF_SYMLINK_LEN_FORMAT CIFS_MF_SYMLINK_MD5_FORMAT,
- link_len,
- CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
+ scnprintf(buf, buf_len,
+ CIFS_MF_SYMLINK_LEN_FORMAT CIFS_MF_SYMLINK_MD5_FORMAT,
+ link_len,
+ CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
ofs = CIFS_MF_SYMLINK_LINK_OFFSET;
memcpy(buf + ofs, link_str, link_len);
@@ -308,14 +311,14 @@
int oplock = 0;
struct cifs_fid fid;
struct cifs_open_parms oparms;
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
int buf_type = CIFS_NO_BUFFER;
FILE_ALL_INFO file_info;
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_READ;
- oparms.create_options = CREATE_NOT_DIR;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
@@ -352,16 +355,12 @@
int oplock = 0;
struct cifs_fid fid;
struct cifs_open_parms oparms;
- struct cifs_io_parms io_parms;
- int create_options = CREATE_NOT_DIR;
-
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
+ struct cifs_io_parms io_parms = {0};
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_WRITE;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_CREATE;
oparms.path = path;
oparms.fid = &fid;
@@ -393,7 +392,7 @@
int rc;
struct cifs_fid fid;
struct cifs_open_parms oparms;
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
int buf_type = CIFS_NO_BUFFER;
__le16 *utf16_path;
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
@@ -402,9 +401,7 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_READ;
- oparms.create_options = CREATE_NOT_DIR;
- if (backup_cred(cifs_sb))
- oparms.create_options |= CREATE_OPEN_BACKUP_INTENT;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_OPEN;
oparms.fid = &fid;
oparms.reconnect = false;
@@ -422,7 +419,7 @@
}
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, pfile_info, NULL,
- NULL);
+ NULL, NULL);
if (rc)
goto qmf_out_open_fail;
@@ -456,14 +453,10 @@
int rc;
struct cifs_fid fid;
struct cifs_open_parms oparms;
- struct cifs_io_parms io_parms;
- int create_options = CREATE_NOT_DIR;
+ struct cifs_io_parms io_parms = {0};
__le16 *utf16_path;
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct kvec iov[2];
-
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
cifs_dbg(FYI, "%s: path: %s\n", __func__, path);
@@ -474,13 +467,14 @@
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_WRITE;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
oparms.disposition = FILE_CREATE;
oparms.fid = &fid;
oparms.reconnect = false;
+ oparms.mode = 0644;
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
- NULL);
+ NULL, NULL);
if (rc) {
kfree(utf16_path);
return rc;
@@ -648,9 +642,16 @@
rc = query_mf_symlink(xid, tcon, cifs_sb, full_path,
&target_path);
- if (rc != 0 && server->ops->query_symlink)
- rc = server->ops->query_symlink(xid, tcon, full_path,
- &target_path, cifs_sb);
+ if (rc != 0 && server->ops->query_symlink) {
+ struct cifsInodeInfo *cifsi = CIFS_I(inode);
+ bool reparse_point = false;
+
+ if (cifsi->cifsAttrs & ATTR_REPARSE)
+ reparse_point = true;
+
+ rc = server->ops->query_symlink(xid, tcon, cifs_sb, full_path,
+ &target_path, reparse_point);
+ }
kfree(full_path);
free_xid(xid);
@@ -704,7 +705,9 @@
cifs_sb_target->local_nls); */
if (rc == 0) {
- if (pTcon->unix_ext)
+ if (pTcon->posix_extensions)
+ rc = smb311_posix_get_inode_info(&newinode, full_path, inode->i_sb, xid);
+ else if (pTcon->unix_ext)
rc = cifs_get_inode_info_unix(&newinode, full_path,
inode->i_sb, xid);
else
--
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