877 lines
26 KiB
C
877 lines
26 KiB
C
/*
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* fs/cifs_debug.c
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*
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* Copyright (C) International Business Machines Corp., 2000,2005
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*
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* Modified by Steve French (sfrench@us.ibm.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/fs.h>
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#include <linux/string.h>
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#include <linux/ctype.h>
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#include <linux/module.h>
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#include <linux/proc_fs.h>
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#include <linux/uaccess.h>
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#include "cifspdu.h"
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#include "cifsglob.h"
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#include "cifsproto.h"
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#include "cifs_debug.h"
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#include "cifsfs.h"
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#ifdef CONFIG_CIFS_SMB_DIRECT
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#include "smbdirect.h"
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#endif
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void
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cifs_dump_mem(char *label, void *data, int length)
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{
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pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
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print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
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data, length, true);
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}
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void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
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{
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#ifdef CONFIG_CIFS_DEBUG2
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struct smb_hdr *smb = (struct smb_hdr *)buf;
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cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
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smb->Command, smb->Status.CifsError,
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smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
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cifs_dbg(VFS, "smb buf %p len %u\n", smb,
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server->ops->calc_smb_size(smb, server));
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#endif /* CONFIG_CIFS_DEBUG2 */
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}
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void cifs_dump_mids(struct TCP_Server_Info *server)
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{
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#ifdef CONFIG_CIFS_DEBUG2
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struct list_head *tmp;
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struct mid_q_entry *mid_entry;
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if (server == NULL)
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return;
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cifs_dbg(VFS, "Dump pending requests:\n");
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spin_lock(&GlobalMid_Lock);
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list_for_each(tmp, &server->pending_mid_q) {
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mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
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cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
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mid_entry->mid_state,
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le16_to_cpu(mid_entry->command),
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mid_entry->pid,
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mid_entry->callback_data,
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mid_entry->mid);
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#ifdef CONFIG_CIFS_STATS2
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cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
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mid_entry->large_buf,
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mid_entry->resp_buf,
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mid_entry->when_received,
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jiffies);
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#endif /* STATS2 */
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cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
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mid_entry->multiRsp, mid_entry->multiEnd);
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if (mid_entry->resp_buf) {
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cifs_dump_detail(mid_entry->resp_buf, server);
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cifs_dump_mem("existing buf: ",
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mid_entry->resp_buf, 62);
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}
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}
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spin_unlock(&GlobalMid_Lock);
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#endif /* CONFIG_CIFS_DEBUG2 */
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}
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#ifdef CONFIG_PROC_FS
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static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
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{
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__u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
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seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count);
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if (tcon->nativeFileSystem)
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seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
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seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
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le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
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le32_to_cpu(tcon->fsAttrInfo.Attributes),
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le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
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tcon->tidStatus);
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if (dev_type == FILE_DEVICE_DISK)
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seq_puts(m, " type: DISK ");
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else if (dev_type == FILE_DEVICE_CD_ROM)
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seq_puts(m, " type: CDROM ");
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else
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seq_printf(m, " type: %d ", dev_type);
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if (tcon->seal)
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seq_printf(m, " Encrypted");
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if (tcon->nocase)
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seq_printf(m, " nocase");
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if (tcon->unix_ext)
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seq_printf(m, " POSIX Extensions");
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if (tcon->ses->server->ops->dump_share_caps)
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tcon->ses->server->ops->dump_share_caps(m, tcon);
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if (tcon->need_reconnect)
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seq_puts(m, "\tDISCONNECTED ");
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seq_putc(m, '\n');
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}
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static void
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cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
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{
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struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
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struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
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seq_printf(m, "\t\tSpeed: %zu bps\n", iface->speed);
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seq_puts(m, "\t\tCapabilities: ");
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if (iface->rdma_capable)
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seq_puts(m, "rdma ");
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if (iface->rss_capable)
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seq_puts(m, "rss ");
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seq_putc(m, '\n');
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if (iface->sockaddr.ss_family == AF_INET)
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seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
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else if (iface->sockaddr.ss_family == AF_INET6)
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seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
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}
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static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
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{
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struct list_head *tmp1, *tmp2, *tmp3;
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struct mid_q_entry *mid_entry;
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struct TCP_Server_Info *server;
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struct cifs_ses *ses;
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struct cifs_tcon *tcon;
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int i, j;
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seq_puts(m,
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"Display Internal CIFS Data Structures for Debugging\n"
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"---------------------------------------------------\n");
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seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
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seq_printf(m, "Features:");
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#ifdef CONFIG_CIFS_DFS_UPCALL
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seq_printf(m, " DFS");
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#endif
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#ifdef CONFIG_CIFS_FSCACHE
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seq_printf(m, ",FSCACHE");
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#endif
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#ifdef CONFIG_CIFS_SMB_DIRECT
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seq_printf(m, ",SMB_DIRECT");
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#endif
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#ifdef CONFIG_CIFS_STATS2
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seq_printf(m, ",STATS2");
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#else
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seq_printf(m, ",STATS");
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#endif
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#ifdef CONFIG_CIFS_DEBUG2
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seq_printf(m, ",DEBUG2");
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#elif defined(CONFIG_CIFS_DEBUG)
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seq_printf(m, ",DEBUG");
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#endif
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#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
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seq_printf(m, ",ALLOW_INSECURE_LEGACY");
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#endif
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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seq_printf(m, ",WEAK_PW_HASH");
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#endif
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#ifdef CONFIG_CIFS_POSIX
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seq_printf(m, ",CIFS_POSIX");
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#endif
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#ifdef CONFIG_CIFS_UPCALL
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seq_printf(m, ",UPCALL(SPNEGO)");
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#endif
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#ifdef CONFIG_CIFS_XATTR
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seq_printf(m, ",XATTR");
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#endif
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#ifdef CONFIG_CIFS_ACL
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seq_printf(m, ",ACL");
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#endif
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seq_putc(m, '\n');
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seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
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seq_printf(m, "Servers:");
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i = 0;
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spin_lock(&cifs_tcp_ses_lock);
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list_for_each(tmp1, &cifs_tcp_ses_list) {
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server = list_entry(tmp1, struct TCP_Server_Info,
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tcp_ses_list);
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#ifdef CONFIG_CIFS_SMB_DIRECT
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if (!server->rdma)
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goto skip_rdma;
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if (!server->smbd_conn) {
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seq_printf(m, "\nSMBDirect transport not available");
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goto skip_rdma;
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}
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seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
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"transport status: %x",
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server->smbd_conn->protocol,
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server->smbd_conn->transport_status);
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seq_printf(m, "\nConn receive_credit_max: %x "
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"send_credit_target: %x max_send_size: %x",
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server->smbd_conn->receive_credit_max,
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server->smbd_conn->send_credit_target,
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server->smbd_conn->max_send_size);
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seq_printf(m, "\nConn max_fragmented_recv_size: %x "
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"max_fragmented_send_size: %x max_receive_size:%x",
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server->smbd_conn->max_fragmented_recv_size,
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server->smbd_conn->max_fragmented_send_size,
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server->smbd_conn->max_receive_size);
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seq_printf(m, "\nConn keep_alive_interval: %x "
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"max_readwrite_size: %x rdma_readwrite_threshold: %x",
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server->smbd_conn->keep_alive_interval,
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server->smbd_conn->max_readwrite_size,
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server->smbd_conn->rdma_readwrite_threshold);
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seq_printf(m, "\nDebug count_get_receive_buffer: %x "
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"count_put_receive_buffer: %x count_send_empty: %x",
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server->smbd_conn->count_get_receive_buffer,
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server->smbd_conn->count_put_receive_buffer,
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server->smbd_conn->count_send_empty);
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seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
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"count_enqueue_reassembly_queue: %x "
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"count_dequeue_reassembly_queue: %x "
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"fragment_reassembly_remaining: %x "
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"reassembly_data_length: %x "
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"reassembly_queue_length: %x",
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server->smbd_conn->count_reassembly_queue,
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server->smbd_conn->count_enqueue_reassembly_queue,
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server->smbd_conn->count_dequeue_reassembly_queue,
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server->smbd_conn->fragment_reassembly_remaining,
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server->smbd_conn->reassembly_data_length,
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server->smbd_conn->reassembly_queue_length);
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seq_printf(m, "\nCurrent Credits send_credits: %x "
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"receive_credits: %x receive_credit_target: %x",
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atomic_read(&server->smbd_conn->send_credits),
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atomic_read(&server->smbd_conn->receive_credits),
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server->smbd_conn->receive_credit_target);
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seq_printf(m, "\nPending send_pending: %x send_payload_pending:"
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" %x smbd_send_pending: %x smbd_recv_pending: %x",
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atomic_read(&server->smbd_conn->send_pending),
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atomic_read(&server->smbd_conn->send_payload_pending),
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server->smbd_conn->smbd_send_pending,
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server->smbd_conn->smbd_recv_pending);
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seq_printf(m, "\nReceive buffers count_receive_queue: %x "
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"count_empty_packet_queue: %x",
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server->smbd_conn->count_receive_queue,
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server->smbd_conn->count_empty_packet_queue);
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seq_printf(m, "\nMR responder_resources: %x "
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"max_frmr_depth: %x mr_type: %x",
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server->smbd_conn->responder_resources,
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server->smbd_conn->max_frmr_depth,
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server->smbd_conn->mr_type);
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seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
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atomic_read(&server->smbd_conn->mr_ready_count),
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atomic_read(&server->smbd_conn->mr_used_count));
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skip_rdma:
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#endif
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seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
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server->credits, server->dialect);
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if (server->sign)
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seq_printf(m, " signed");
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if (server->posix_ext_supported)
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seq_printf(m, " posix");
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i++;
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list_for_each(tmp2, &server->smb_ses_list) {
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ses = list_entry(tmp2, struct cifs_ses,
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smb_ses_list);
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if ((ses->serverDomain == NULL) ||
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(ses->serverOS == NULL) ||
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(ses->serverNOS == NULL)) {
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seq_printf(m, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d\t",
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i, ses->serverName, ses->ses_count,
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ses->capabilities, ses->status);
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if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
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seq_printf(m, "Guest\t");
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else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
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seq_printf(m, "Anonymous\t");
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} else {
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seq_printf(m,
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"\n%d) Name: %s Domain: %s Uses: %d OS:"
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" %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
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" session status: %d\t",
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i, ses->serverName, ses->serverDomain,
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ses->ses_count, ses->serverOS, ses->serverNOS,
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ses->capabilities, ses->status);
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}
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if (server->rdma)
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seq_printf(m, "RDMA\n\t");
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seq_printf(m, "TCP status: %d\n\tLocal Users To "
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"Server: %d SecMode: 0x%x Req On Wire: %d",
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server->tcpStatus, server->srv_count,
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server->sec_mode, in_flight(server));
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#ifdef CONFIG_CIFS_STATS2
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seq_printf(m, " In Send: %d In MaxReq Wait: %d",
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atomic_read(&server->in_send),
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atomic_read(&server->num_waiters));
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#endif
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seq_puts(m, "\n\tShares:");
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j = 0;
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seq_printf(m, "\n\t%d) IPC: ", j);
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if (ses->tcon_ipc)
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cifs_debug_tcon(m, ses->tcon_ipc);
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else
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seq_puts(m, "none\n");
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list_for_each(tmp3, &ses->tcon_list) {
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tcon = list_entry(tmp3, struct cifs_tcon,
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tcon_list);
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++j;
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seq_printf(m, "\n\t%d) ", j);
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cifs_debug_tcon(m, tcon);
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}
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seq_puts(m, "\n\tMIDs:\n");
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spin_lock(&GlobalMid_Lock);
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list_for_each(tmp3, &server->pending_mid_q) {
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mid_entry = list_entry(tmp3, struct mid_q_entry,
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qhead);
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seq_printf(m, "\tState: %d com: %d pid:"
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" %d cbdata: %p mid %llu\n",
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mid_entry->mid_state,
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le16_to_cpu(mid_entry->command),
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mid_entry->pid,
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mid_entry->callback_data,
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mid_entry->mid);
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}
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spin_unlock(&GlobalMid_Lock);
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spin_lock(&ses->iface_lock);
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if (ses->iface_count)
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seq_printf(m, "\n\tServer interfaces: %zu\n",
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ses->iface_count);
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for (j = 0; j < ses->iface_count; j++) {
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seq_printf(m, "\t%d)\n", j);
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cifs_dump_iface(m, &ses->iface_list[j]);
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}
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spin_unlock(&ses->iface_lock);
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}
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}
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spin_unlock(&cifs_tcp_ses_lock);
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seq_putc(m, '\n');
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/* BB add code to dump additional info such as TCP session info now */
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return 0;
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}
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static ssize_t cifs_stats_proc_write(struct file *file,
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const char __user *buffer, size_t count, loff_t *ppos)
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{
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bool bv;
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int rc;
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struct list_head *tmp1, *tmp2, *tmp3;
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struct TCP_Server_Info *server;
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struct cifs_ses *ses;
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struct cifs_tcon *tcon;
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rc = kstrtobool_from_user(buffer, count, &bv);
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if (rc == 0) {
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#ifdef CONFIG_CIFS_STATS2
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int i;
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atomic_set(&totBufAllocCount, 0);
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atomic_set(&totSmBufAllocCount, 0);
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#endif /* CONFIG_CIFS_STATS2 */
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atomic_set(&tcpSesReconnectCount, 0);
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atomic_set(&tconInfoReconnectCount, 0);
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spin_lock(&GlobalMid_Lock);
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GlobalMaxActiveXid = 0;
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GlobalCurrentXid = 0;
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spin_unlock(&GlobalMid_Lock);
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spin_lock(&cifs_tcp_ses_lock);
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list_for_each(tmp1, &cifs_tcp_ses_list) {
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server = list_entry(tmp1, struct TCP_Server_Info,
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tcp_ses_list);
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#ifdef CONFIG_CIFS_STATS2
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for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++)
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atomic_set(&server->smb2slowcmd[i], 0);
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#endif /* CONFIG_CIFS_STATS2 */
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list_for_each(tmp2, &server->smb_ses_list) {
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ses = list_entry(tmp2, struct cifs_ses,
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smb_ses_list);
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list_for_each(tmp3, &ses->tcon_list) {
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tcon = list_entry(tmp3,
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struct cifs_tcon,
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tcon_list);
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atomic_set(&tcon->num_smbs_sent, 0);
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spin_lock(&tcon->stat_lock);
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tcon->bytes_read = 0;
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tcon->bytes_written = 0;
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spin_unlock(&tcon->stat_lock);
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if (server->ops->clear_stats)
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server->ops->clear_stats(tcon);
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}
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}
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}
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spin_unlock(&cifs_tcp_ses_lock);
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} else {
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return rc;
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}
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return count;
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}
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static int cifs_stats_proc_show(struct seq_file *m, void *v)
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{
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int i;
|
|
#ifdef CONFIG_CIFS_STATS2
|
|
int j;
|
|
#endif /* STATS2 */
|
|
struct list_head *tmp1, *tmp2, *tmp3;
|
|
struct TCP_Server_Info *server;
|
|
struct cifs_ses *ses;
|
|
struct cifs_tcon *tcon;
|
|
|
|
seq_printf(m, "Resources in use\nCIFS Session: %d\n",
|
|
sesInfoAllocCount.counter);
|
|
seq_printf(m, "Share (unique mount targets): %d\n",
|
|
tconInfoAllocCount.counter);
|
|
seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
|
|
bufAllocCount.counter,
|
|
cifs_min_rcv + tcpSesAllocCount.counter);
|
|
seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
|
|
smBufAllocCount.counter, cifs_min_small);
|
|
#ifdef CONFIG_CIFS_STATS2
|
|
seq_printf(m, "Total Large %d Small %d Allocations\n",
|
|
atomic_read(&totBufAllocCount),
|
|
atomic_read(&totSmBufAllocCount));
|
|
#endif /* CONFIG_CIFS_STATS2 */
|
|
|
|
seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
|
|
seq_printf(m,
|
|
"\n%d session %d share reconnects\n",
|
|
tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
|
|
|
|
seq_printf(m,
|
|
"Total vfs operations: %d maximum at one time: %d\n",
|
|
GlobalCurrentXid, GlobalMaxActiveXid);
|
|
|
|
i = 0;
|
|
spin_lock(&cifs_tcp_ses_lock);
|
|
list_for_each(tmp1, &cifs_tcp_ses_list) {
|
|
server = list_entry(tmp1, struct TCP_Server_Info,
|
|
tcp_ses_list);
|
|
#ifdef CONFIG_CIFS_STATS2
|
|
for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
|
|
if (atomic_read(&server->smb2slowcmd[j]))
|
|
seq_printf(m, "%d slow responses from %s for command %d\n",
|
|
atomic_read(&server->smb2slowcmd[j]),
|
|
server->hostname, j);
|
|
#endif /* STATS2 */
|
|
list_for_each(tmp2, &server->smb_ses_list) {
|
|
ses = list_entry(tmp2, struct cifs_ses,
|
|
smb_ses_list);
|
|
list_for_each(tmp3, &ses->tcon_list) {
|
|
tcon = list_entry(tmp3,
|
|
struct cifs_tcon,
|
|
tcon_list);
|
|
i++;
|
|
seq_printf(m, "\n%d) %s", i, tcon->treeName);
|
|
if (tcon->need_reconnect)
|
|
seq_puts(m, "\tDISCONNECTED ");
|
|
seq_printf(m, "\nSMBs: %d",
|
|
atomic_read(&tcon->num_smbs_sent));
|
|
if (server->ops->print_stats)
|
|
server->ops->print_stats(m, tcon);
|
|
}
|
|
}
|
|
}
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
|
|
seq_putc(m, '\n');
|
|
return 0;
|
|
}
|
|
|
|
static int cifs_stats_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, cifs_stats_proc_show, NULL);
|
|
}
|
|
|
|
static const struct file_operations cifs_stats_proc_fops = {
|
|
.open = cifs_stats_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = cifs_stats_proc_write,
|
|
};
|
|
|
|
#ifdef CONFIG_CIFS_SMB_DIRECT
|
|
#define PROC_FILE_DEFINE(name) \
|
|
static ssize_t name##_write(struct file *file, const char __user *buffer, \
|
|
size_t count, loff_t *ppos) \
|
|
{ \
|
|
int rc; \
|
|
rc = kstrtoint_from_user(buffer, count, 10, & name); \
|
|
if (rc) \
|
|
return rc; \
|
|
return count; \
|
|
} \
|
|
static int name##_proc_show(struct seq_file *m, void *v) \
|
|
{ \
|
|
seq_printf(m, "%d\n", name ); \
|
|
return 0; \
|
|
} \
|
|
static int name##_open(struct inode *inode, struct file *file) \
|
|
{ \
|
|
return single_open(file, name##_proc_show, NULL); \
|
|
} \
|
|
\
|
|
static const struct file_operations cifs_##name##_proc_fops = { \
|
|
.open = name##_open, \
|
|
.read = seq_read, \
|
|
.llseek = seq_lseek, \
|
|
.release = single_release, \
|
|
.write = name##_write, \
|
|
}
|
|
|
|
PROC_FILE_DEFINE(rdma_readwrite_threshold);
|
|
PROC_FILE_DEFINE(smbd_max_frmr_depth);
|
|
PROC_FILE_DEFINE(smbd_keep_alive_interval);
|
|
PROC_FILE_DEFINE(smbd_max_receive_size);
|
|
PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
|
|
PROC_FILE_DEFINE(smbd_max_send_size);
|
|
PROC_FILE_DEFINE(smbd_send_credit_target);
|
|
PROC_FILE_DEFINE(smbd_receive_credit_max);
|
|
#endif
|
|
|
|
static struct proc_dir_entry *proc_fs_cifs;
|
|
static const struct file_operations cifsFYI_proc_fops;
|
|
static const struct file_operations cifs_lookup_cache_proc_fops;
|
|
static const struct file_operations traceSMB_proc_fops;
|
|
static const struct file_operations cifs_security_flags_proc_fops;
|
|
static const struct file_operations cifs_linux_ext_proc_fops;
|
|
|
|
void
|
|
cifs_proc_init(void)
|
|
{
|
|
proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
|
|
if (proc_fs_cifs == NULL)
|
|
return;
|
|
|
|
proc_create_single("DebugData", 0, proc_fs_cifs,
|
|
cifs_debug_data_proc_show);
|
|
|
|
proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_fops);
|
|
proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_fops);
|
|
proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_fops);
|
|
proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
|
|
&cifs_linux_ext_proc_fops);
|
|
proc_create("SecurityFlags", 0644, proc_fs_cifs,
|
|
&cifs_security_flags_proc_fops);
|
|
proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
|
|
&cifs_lookup_cache_proc_fops);
|
|
#ifdef CONFIG_CIFS_SMB_DIRECT
|
|
proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
|
|
&cifs_rdma_readwrite_threshold_proc_fops);
|
|
proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
|
|
&cifs_smbd_max_frmr_depth_proc_fops);
|
|
proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
|
|
&cifs_smbd_keep_alive_interval_proc_fops);
|
|
proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
|
|
&cifs_smbd_max_receive_size_proc_fops);
|
|
proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
|
|
&cifs_smbd_max_fragmented_recv_size_proc_fops);
|
|
proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
|
|
&cifs_smbd_max_send_size_proc_fops);
|
|
proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
|
|
&cifs_smbd_send_credit_target_proc_fops);
|
|
proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
|
|
&cifs_smbd_receive_credit_max_proc_fops);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
cifs_proc_clean(void)
|
|
{
|
|
if (proc_fs_cifs == NULL)
|
|
return;
|
|
|
|
remove_proc_entry("DebugData", proc_fs_cifs);
|
|
remove_proc_entry("cifsFYI", proc_fs_cifs);
|
|
remove_proc_entry("traceSMB", proc_fs_cifs);
|
|
remove_proc_entry("Stats", proc_fs_cifs);
|
|
remove_proc_entry("SecurityFlags", proc_fs_cifs);
|
|
remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
|
|
remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
|
|
#ifdef CONFIG_CIFS_SMB_DIRECT
|
|
remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
|
|
remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
|
|
remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
|
|
remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
|
|
remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
|
|
remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
|
|
remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
|
|
remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
|
|
#endif
|
|
remove_proc_entry("fs/cifs", NULL);
|
|
}
|
|
|
|
static int cifsFYI_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "%d\n", cifsFYI);
|
|
return 0;
|
|
}
|
|
|
|
static int cifsFYI_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, cifsFYI_proc_show, NULL);
|
|
}
|
|
|
|
static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char c[2] = { '\0' };
|
|
bool bv;
|
|
int rc;
|
|
|
|
rc = get_user(c[0], buffer);
|
|
if (rc)
|
|
return rc;
|
|
if (strtobool(c, &bv) == 0)
|
|
cifsFYI = bv;
|
|
else if ((c[0] > '1') && (c[0] <= '9'))
|
|
cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
|
|
else
|
|
return -EINVAL;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifsFYI_proc_fops = {
|
|
.open = cifsFYI_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = cifsFYI_proc_write,
|
|
};
|
|
|
|
static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "%d\n", linuxExtEnabled);
|
|
return 0;
|
|
}
|
|
|
|
static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, cifs_linux_ext_proc_show, NULL);
|
|
}
|
|
|
|
static ssize_t cifs_linux_ext_proc_write(struct file *file,
|
|
const char __user *buffer, size_t count, loff_t *ppos)
|
|
{
|
|
int rc;
|
|
|
|
rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifs_linux_ext_proc_fops = {
|
|
.open = cifs_linux_ext_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = cifs_linux_ext_proc_write,
|
|
};
|
|
|
|
static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "%d\n", lookupCacheEnabled);
|
|
return 0;
|
|
}
|
|
|
|
static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, cifs_lookup_cache_proc_show, NULL);
|
|
}
|
|
|
|
static ssize_t cifs_lookup_cache_proc_write(struct file *file,
|
|
const char __user *buffer, size_t count, loff_t *ppos)
|
|
{
|
|
int rc;
|
|
|
|
rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifs_lookup_cache_proc_fops = {
|
|
.open = cifs_lookup_cache_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = cifs_lookup_cache_proc_write,
|
|
};
|
|
|
|
static int traceSMB_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "%d\n", traceSMB);
|
|
return 0;
|
|
}
|
|
|
|
static int traceSMB_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, traceSMB_proc_show, NULL);
|
|
}
|
|
|
|
static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
int rc;
|
|
|
|
rc = kstrtobool_from_user(buffer, count, &traceSMB);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations traceSMB_proc_fops = {
|
|
.open = traceSMB_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = traceSMB_proc_write,
|
|
};
|
|
|
|
static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "0x%x\n", global_secflags);
|
|
return 0;
|
|
}
|
|
|
|
static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, cifs_security_flags_proc_show, NULL);
|
|
}
|
|
|
|
/*
|
|
* Ensure that if someone sets a MUST flag, that we disable all other MAY
|
|
* flags except for the ones corresponding to the given MUST flag. If there are
|
|
* multiple MUST flags, then try to prefer more secure ones.
|
|
*/
|
|
static void
|
|
cifs_security_flags_handle_must_flags(unsigned int *flags)
|
|
{
|
|
unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
|
|
|
|
if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
|
|
*flags = CIFSSEC_MUST_KRB5;
|
|
else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
|
|
*flags = CIFSSEC_MUST_NTLMSSP;
|
|
else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
|
|
*flags = CIFSSEC_MUST_NTLMV2;
|
|
else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM)
|
|
*flags = CIFSSEC_MUST_NTLM;
|
|
else if (CIFSSEC_MUST_LANMAN &&
|
|
(*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN)
|
|
*flags = CIFSSEC_MUST_LANMAN;
|
|
else if (CIFSSEC_MUST_PLNTXT &&
|
|
(*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT)
|
|
*flags = CIFSSEC_MUST_PLNTXT;
|
|
|
|
*flags |= signflags;
|
|
}
|
|
|
|
static ssize_t cifs_security_flags_proc_write(struct file *file,
|
|
const char __user *buffer, size_t count, loff_t *ppos)
|
|
{
|
|
int rc;
|
|
unsigned int flags;
|
|
char flags_string[12];
|
|
bool bv;
|
|
|
|
if ((count < 1) || (count > 11))
|
|
return -EINVAL;
|
|
|
|
memset(flags_string, 0, 12);
|
|
|
|
if (copy_from_user(flags_string, buffer, count))
|
|
return -EFAULT;
|
|
|
|
if (count < 3) {
|
|
/* single char or single char followed by null */
|
|
if (strtobool(flags_string, &bv) == 0) {
|
|
global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
|
|
return count;
|
|
} else if (!isdigit(flags_string[0])) {
|
|
cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
|
|
flags_string);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
/* else we have a number */
|
|
rc = kstrtouint(flags_string, 0, &flags);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
|
|
flags_string);
|
|
return rc;
|
|
}
|
|
|
|
cifs_dbg(FYI, "sec flags 0x%x\n", flags);
|
|
|
|
if (flags == 0) {
|
|
cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (flags & ~CIFSSEC_MASK) {
|
|
cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
|
|
flags & ~CIFSSEC_MASK);
|
|
return -EINVAL;
|
|
}
|
|
|
|
cifs_security_flags_handle_must_flags(&flags);
|
|
|
|
/* flags look ok - update the global security flags for cifs module */
|
|
global_secflags = flags;
|
|
if (global_secflags & CIFSSEC_MUST_SIGN) {
|
|
/* requiring signing implies signing is allowed */
|
|
global_secflags |= CIFSSEC_MAY_SIGN;
|
|
cifs_dbg(FYI, "packet signing now required\n");
|
|
} else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
|
|
cifs_dbg(FYI, "packet signing disabled\n");
|
|
}
|
|
/* BB should we turn on MAY flags for other MUST options? */
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifs_security_flags_proc_fops = {
|
|
.open = cifs_security_flags_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = cifs_security_flags_proc_write,
|
|
};
|
|
#else
|
|
inline void cifs_proc_init(void)
|
|
{
|
|
}
|
|
|
|
inline void cifs_proc_clean(void)
|
|
{
|
|
}
|
|
#endif /* PROC_FS */
|