[PATCH] cifs: Pass unbyteswapped eof value into SMB2_set_eof()
From: David Howells
Date: Mon Jan 01 2024 - 10:40:29 EST
Hi Steve,
How about something like the attached?
David
---
cifs: Pass unbyteswapped eof value into SMB2_set_eof()
Change SMB2_set_eof() to take eof as CPU order rather than __le64 and pass
it directly rather than by pointer. This moves the conversion down into
SMB_set_eof() rather than all of its callers and means we don't need to
undo it for the traceline.
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: Steve French <sfrench@xxxxxxxxx>
cc: Shyam Prasad N <nspmangalore@xxxxxxxxx>
cc: Rohith Surabattula <rohiths.msft@xxxxxxxxx>
cc: Jeff Layton <jlayton@xxxxxxxxxx>
cc: linux-cifs@xxxxxxxxxxxxxxx
---
fs/smb/client/smb2ops.c | 37 ++++++++++++++++---------------------
fs/smb/client/smb2pdu.c | 6 +++---
fs/smb/client/smb2proto.h | 2 +-
3 files changed, 20 insertions(+), 25 deletions(-)
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index 66b310208545..82de0e205607 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -1923,7 +1923,6 @@ static int
smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
{
- __le64 eof = cpu_to_le64(size);
struct inode *inode;
/*
@@ -1940,7 +1939,7 @@ smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
}
return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, cfile->pid, &eof);
+ cfile->fid.volatile_fid, cfile->pid, size);
}
static int
@@ -3324,7 +3323,6 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
unsigned long long new_size;
long rc;
unsigned int xid;
- __le64 eof;
xid = get_xid();
@@ -3354,9 +3352,8 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
*/
new_size = offset + len;
if (keep_size == false && (unsigned long long)i_size_read(inode) < new_size) {
- eof = cpu_to_le64(new_size);
rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, cfile->pid, &eof);
+ cfile->fid.volatile_fid, cfile->pid, new_size);
if (rc >= 0) {
truncate_setsize(inode, new_size);
fscache_resize_cookie(cifs_inode_cookie(inode), new_size);
@@ -3549,7 +3546,7 @@ static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
struct cifsFileInfo *cfile = file->private_data;
long rc = -EOPNOTSUPP;
unsigned int xid;
- __le64 eof;
+ loff_t new_eof;
xid = get_xid();
@@ -3578,14 +3575,14 @@ static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
if (cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)
smb2_set_sparse(xid, tcon, cfile, inode, false);
- eof = cpu_to_le64(off + len);
+ new_eof = off + len;
rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, cfile->pid, &eof);
+ cfile->fid.volatile_fid, cfile->pid, new_eof);
if (rc == 0) {
- cifsi->server_eof = off + len;
- cifs_setsize(inode, off + len);
+ cifsi->server_eof = new_eof;
+ cifs_setsize(inode, new_eof);
cifs_truncate_page(inode->i_mapping, inode->i_size);
- truncate_setsize(inode, off + len);
+ truncate_setsize(inode, new_eof);
}
goto out;
}
@@ -3676,8 +3673,7 @@ static long smb3_collapse_range(struct file *file, struct cifs_tcon *tcon,
struct inode *inode = file_inode(file);
struct cifsFileInfo *cfile = file->private_data;
struct cifsInodeInfo *cifsi = CIFS_I(inode);
- __le64 eof;
- loff_t old_eof;
+ loff_t old_eof, new_eof;
xid = get_xid();
@@ -3702,9 +3698,9 @@ static long smb3_collapse_range(struct file *file, struct cifs_tcon *tcon,
if (rc < 0)
goto out_2;
- eof = cpu_to_le64(old_eof - len);
+ new_eof = old_eof - len;
rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, cfile->pid, &eof);
+ cfile->fid.volatile_fid, cfile->pid, new_eof);
if (rc < 0)
goto out_2;
@@ -3728,8 +3724,7 @@ static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon,
unsigned int xid;
struct cifsFileInfo *cfile = file->private_data;
struct inode *inode = file_inode(file);
- __le64 eof;
- __u64 count, old_eof;
+ __u64 count, old_eof, new_eof;
xid = get_xid();
@@ -3742,20 +3737,20 @@ static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon,
}
count = old_eof - off;
- eof = cpu_to_le64(old_eof + len);
+ new_eof = old_eof + len;
filemap_invalidate_lock(inode->i_mapping);
- rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof + len - 1);
+ rc = filemap_write_and_wait_range(inode->i_mapping, off, new_eof - 1);
if (rc < 0)
goto out_2;
truncate_pagecache_range(inode, off, old_eof);
rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, cfile->pid, &eof);
+ cfile->fid.volatile_fid, cfile->pid, new_eof);
if (rc < 0)
goto out_2;
- truncate_setsize(inode, old_eof + len);
+ truncate_setsize(inode, new_eof);
fscache_resize_cookie(cifs_inode_cookie(inode), i_size_read(inode));
rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len);
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index 4f971c1061f0..bd25c34dc398 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -5347,18 +5347,18 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
int
SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
- u64 volatile_fid, u32 pid, __le64 *eof)
+ u64 volatile_fid, u32 pid, loff_t new_eof)
{
struct smb2_file_eof_info info;
void *data;
unsigned int size;
- info.EndOfFile = *eof;
+ info.EndOfFile = cpu_to_le64(new_eof);
data = &info;
size = sizeof(struct smb2_file_eof_info);
- trace_smb3_set_eof(xid, persistent_fid, tcon->tid, tcon->ses->Suid, le64_to_cpu(*eof));
+ trace_smb3_set_eof(xid, persistent_fid, tcon->tid, tcon->ses->Suid, new_eof);
return send_set_info(xid, tcon, persistent_fid, volatile_fid,
pid, FILE_END_OF_FILE_INFORMATION, SMB2_O_INFO_FILE,
diff --git a/fs/smb/client/smb2proto.h b/fs/smb/client/smb2proto.h
index 0e371f7e2854..95e5ca69fdf3 100644
--- a/fs/smb/client/smb2proto.h
+++ b/fs/smb/client/smb2proto.h
@@ -205,7 +205,7 @@ extern int SMB2_query_directory_init(unsigned int xid, struct cifs_tcon *tcon,
extern void SMB2_query_directory_free(struct smb_rqst *rqst);
extern int SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, u32 pid,
- __le64 *eof);
+ loff_t new_eof);
extern int SMB2_set_info_init(struct cifs_tcon *tcon,
struct TCP_Server_Info *server,
struct smb_rqst *rqst,