path: root/fs/smb/client/cifs_debug.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *
 *   Copyright (C) International Business Machines  Corp., 2000,2005
 *
 *   Modified by Steve French (sfrench@us.ibm.com)
 */
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/kstrtox.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/uaccess.h>
#include <uapi/linux/ethtool.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"
#include "fs_context.h"
#ifdef CONFIG_CIFS_DFS_UPCALL
#include "dfs_cache.h"
#endif
#ifdef CONFIG_CIFS_SMB_DIRECT
#include "smbdirect.h"
#endif
#include "cifs_swn.h"

void
cifs_dump_mem(char *label, void *data, int length)
{
	pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
		       data, length, true);
}

void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
{
#ifdef CONFIG_CIFS_DEBUG2
	struct smb_hdr *smb = buf;

	cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d Wct: %d\n",
		 smb->Command, smb->Status.CifsError, smb->Flags,
		 smb->Flags2, smb->Mid, smb->Pid, smb->WordCount);
	if (!server->ops->check_message(buf, server->total_read, server)) {
		cifs_dbg(VFS, "smb buf %p len %u\n", smb,
			 server->ops->calc_smb_size(smb));
	}
#endif /* CONFIG_CIFS_DEBUG2 */
}

void cifs_dump_mids(struct TCP_Server_Info *server)
{
#ifdef CONFIG_CIFS_DEBUG2
	struct mid_q_entry *mid_entry;

	if (server == NULL)
		return;

	cifs_dbg(VFS, "Dump pending requests:\n");
	spin_lock(&server->mid_lock);
	list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
		cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
			 mid_entry->mid_state,
			 le16_to_cpu(mid_entry->command),
			 mid_entry->pid,
			 mid_entry->callback_data,
			 mid_entry->mid);
#ifdef CONFIG_CIFS_STATS2
		cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
			 mid_entry->large_buf,
			 mid_entry->resp_buf,
			 mid_entry->when_received,
			 jiffies);
#endif /* STATS2 */
		cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
			 mid_entry->multiRsp, mid_entry->multiEnd);
		if (mid_entry->resp_buf) {
			cifs_dump_detail(mid_entry->resp_buf, server);
			cifs_dump_mem("existing buf: ",
				mid_entry->resp_buf, 62);
		}
	}
	spin_unlock(&server->mid_lock);
#endif /* CONFIG_CIFS_DEBUG2 */
}

#ifdef CONFIG_PROC_FS
static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
{
	__u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);

	seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count);
	if (tcon->nativeFileSystem)
		seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
	seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
		   le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
		   le32_to_cpu(tcon->fsAttrInfo.Attributes),
		   le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
		   tcon->status);
	if (dev_type == FILE_DEVICE_DISK)
		seq_puts(m, " type: DISK ");
	else if (dev_type == FILE_DEVICE_CD_ROM)
		seq_puts(m, " type: CDROM ");
	else</