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authorPaulo Alcantara <pc@cjr.nz>2022-03-21 19:08:25 +0300
committerSteve French <stfrench@microsoft.com>2022-03-23 23:20:14 +0300
commit351a59dace0e0e31795145acdec2660e3bc2a58d (patch)
treedc40b8f472dec34f31c33cf994a6c84ba5086cd8 /fs/cifs/smb2pdu.c
parent8708b107604789dbb25057981919c7709828db16 (diff)
downloadlinux-351a59dace0e0e31795145acdec2660e3bc2a58d.tar.xz
cifs: fix bad fids sent over wire
The client used to partially convert the fids to le64, while storing or sending them by using host endianness. This broke the client on big-endian machines. Instead of converting them to le64, store them as opaque integers and then avoid byteswapping when sending them over wire. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Namjae Jeon <linkinjeon@kernel.org> Reviewed-by: Tom Talpey <tom@talpey.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/smb2pdu.c')
-rw-r--r--fs/cifs/smb2pdu.c63
1 files changed, 28 insertions, 35 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 7e7909b1ae11..7e15b0092243 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2734,13 +2734,10 @@ int smb311_posix_mkdir(const unsigned int xid, struct inode *inode,
goto err_free_req;
}
- trace_smb3_posix_mkdir_done(xid, le64_to_cpu(rsp->PersistentFileId),
- tcon->tid,
- ses->Suid, CREATE_NOT_FILE,
- FILE_WRITE_ATTRIBUTES);
+ trace_smb3_posix_mkdir_done(xid, rsp->PersistentFileId, tcon->tid, ses->Suid,
+ CREATE_NOT_FILE, FILE_WRITE_ATTRIBUTES);
- SMB2_close(xid, tcon, le64_to_cpu(rsp->PersistentFileId),
- le64_to_cpu(rsp->VolatileFileId));
+ SMB2_close(xid, tcon, rsp->PersistentFileId, rsp->VolatileFileId);
/* Eventually save off posix specific response info and timestaps */
@@ -3009,14 +3006,12 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
} else if (rsp == NULL) /* unlikely to happen, but safer to check */
goto creat_exit;
else
- trace_smb3_open_done(xid, le64_to_cpu(rsp->PersistentFileId),
- tcon->tid,
- ses->Suid, oparms->create_options,
- oparms->desired_access);
+ trace_smb3_open_done(xid, rsp->PersistentFileId, tcon->tid, ses->Suid,
+ oparms->create_options, oparms->desired_access);
atomic_inc(&tcon->num_remote_opens);
- oparms->fid->persistent_fid = le64_to_cpu(rsp->PersistentFileId);
- oparms->fid->volatile_fid = le64_to_cpu(rsp->VolatileFileId);
+ oparms->fid->persistent_fid = rsp->PersistentFileId;
+ oparms->fid->volatile_fid = rsp->VolatileFileId;
oparms->fid->access = oparms->desired_access;
#ifdef CONFIG_CIFS_DEBUG2
oparms->fid->mid = le64_to_cpu(rsp->hdr.MessageId);
@@ -3313,8 +3308,8 @@ SMB2_close_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
if (rc)
return rc;
- req->PersistentFileId = cpu_to_le64(persistent_fid);
- req->VolatileFileId = cpu_to_le64(volatile_fid);
+ req->PersistentFileId = persistent_fid;
+ req->VolatileFileId = volatile_fid;
if (query_attrs)
req->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
else
@@ -3677,8 +3672,8 @@ SMB2_notify_init(const unsigned int xid, struct smb_rqst *rqst,
if (rc)
return rc;
- req->PersistentFileId = cpu_to_le64(persistent_fid);
- req->VolatileFileId = cpu_to_le64(volatile_fid);
+ req->PersistentFileId = persistent_fid;
+ req->VolatileFileId = volatile_fid;
/* See note 354 of MS-SMB2, 64K max */
req->OutputBufferLength =
cpu_to_le32(SMB2_MAX_BUFFER_SIZE - MAX_SMB2_HDR_SIZE);
@@ -3951,8 +3946,8 @@ SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst,
if (rc)
return rc;
- req->PersistentFileId = cpu_to_le64(persistent_fid);
- req->VolatileFileId = cpu_to_le64(volatile_fid);
+ req->PersistentFileId = persistent_fid;
+ req->VolatileFileId = volatile_fid;
iov[0].iov_base = (char *)req;
iov[0].iov_len = total_len;
@@ -4033,8 +4028,8 @@ smb2_new_read_req(void **buf, unsigned int *total_len,
shdr = &req->hdr;
shdr->Id.SyncId.ProcessId = cpu_to_le32(io_parms->pid);
- req->PersistentFileId = cpu_to_le64(io_parms->persistent_fid);
- req->VolatileFileId = cpu_to_le64(io_parms->volatile_fid);
+ req->PersistentFileId = io_parms->persistent_fid;
+ req->VolatileFileId = io_parms->volatile_fid;
req->ReadChannelInfoOffset = 0; /* reserved */
req->ReadChannelInfoLength = 0; /* reserved */
req->Channel = 0; /* reserved */
@@ -4094,8 +4089,8 @@ smb2_new_read_req(void **buf, unsigned int *total_len,
*/
shdr->SessionId = cpu_to_le64(0xFFFFFFFFFFFFFFFF);
shdr->Id.SyncId.TreeId = cpu_to_le32(0xFFFFFFFF);
- req->PersistentFileId = cpu_to_le64(0xFFFFFFFFFFFFFFFF);
- req->VolatileFileId = cpu_to_le64(0xFFFFFFFFFFFFFFFF);
+ req->PersistentFileId = (u64)-1;
+ req->VolatileFileId = (u64)-1;
}
}
if (remaining_bytes > io_parms->length)
@@ -4307,21 +4302,19 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms,
cifs_stats_fail_inc(io_parms->tcon, SMB2_READ_HE);
cifs_dbg(VFS, "Send error in read = %d\n", rc);
trace_smb3_read_err(xid,
- le64_to_cpu(req->PersistentFileId),
+ req->PersistentFileId,
io_parms->tcon->tid, ses->Suid,
io_parms->offset, io_parms->length,
rc);
} else
- trace_smb3_read_done(xid,
- le64_to_cpu(req->PersistentFileId),
- io_parms->tcon->tid, ses->Suid,
- io_parms->offset, 0);
+ trace_smb3_read_done(xid, req->PersistentFileId, io_parms->tcon->tid,
+ ses->Suid, io_parms->offset, 0);
free_rsp_buf(resp_buftype, rsp_iov.iov_base);
cifs_small_buf_release(req);
return rc == -ENODATA ? 0 : rc;
} else
trace_smb3_read_done(xid,
- le64_to_cpu(req->PersistentFileId),
+ req->PersistentFileId,
io_parms->tcon->tid, ses->Suid,
io_parms->offset, io_parms->length);
@@ -4463,8 +4456,8 @@ smb2_async_writev(struct cifs_writedata *wdata,
shdr = (struct smb2_hdr *)req;
shdr->Id.SyncId.ProcessId = cpu_to_le32(wdata->cfile->pid);
- req->PersistentFileId = cpu_to_le64(wdata->cfile->fid.persistent_fid);
- req->VolatileFileId = cpu_to_le64(wdata->cfile->fid.volatile_fid);
+ req->PersistentFileId = wdata->cfile->fid.persistent_fid;
+ req->VolatileFileId = wdata->cfile->fid.volatile_fid;
req->WriteChannelInfoOffset = 0;
req->WriteChannelInfoLength = 0;
req->Channel = 0;
@@ -4562,7 +4555,7 @@ smb2_async_writev(struct cifs_writedata *wdata,
if (rc) {
trace_smb3_write_err(0 /* no xid */,
- le64_to_cpu(req->PersistentFileId),
+ req->PersistentFileId,
tcon->tid, tcon->ses->Suid, wdata->offset,
wdata->bytes, rc);
kref_put(&wdata->refcount, release);
@@ -4615,8 +4608,8 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
req->hdr.Id.SyncId.ProcessId = cpu_to_le32(io_parms->pid);
- req->PersistentFileId = cpu_to_le64(io_parms->persistent_fid);
- req->VolatileFileId = cpu_to_le64(io_parms->volatile_fid);
+ req->PersistentFileId = io_parms->persistent_fid;
+ req->VolatileFileId = io_parms->volatile_fid;
req->WriteChannelInfoOffset = 0;
req->WriteChannelInfoLength = 0;
req->Channel = 0;
@@ -4645,7 +4638,7 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
if (rc) {
trace_smb3_write_err(xid,
- le64_to_cpu(req->PersistentFileId),
+ req->PersistentFileId,
io_parms->tcon->tid,
io_parms->tcon->ses->Suid,
io_parms->offset, io_parms->length, rc);
@@ -4654,7 +4647,7 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
} else {
*nbytes = le32_to_cpu(rsp->DataLength);
trace_smb3_write_done(xid,
- le64_to_cpu(req->PersistentFileId),
+ req->PersistentFileId,
io_parms->tcon->tid,
io_parms->tcon->ses->Suid,
io_parms->offset, *nbytes);