![Jeff Layton](/assets/img/avatar_default.png)
This is the same patch as originally posted, just with some merge conflicts fixed up... Currently, the ByteCount is usually converted to host-endian on receive. This is confusing however, as we need to keep two sets of routines for accessing it, and keep track of when to use each routine. Munging received packets like this also limits when the signature can be calulated. Simplify the code by keeping the received ByteCount in little-endian format. This allows us to eliminate a set of routines for accessing it and we can now drop the *_le suffixes from the accessor functions since that's now implied. While we're at it, switch all of the places that read the ByteCount directly to use the get_bcc inline which should also clean up some unaligned accesses. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
783 lines
21 KiB
C
783 lines
21 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 <asm/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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void
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cifs_dump_mem(char *label, void *data, int length)
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{
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int i, j;
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int *intptr = data;
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char *charptr = data;
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char buf[10], line[80];
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printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
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label, length, data);
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for (i = 0; i < length; i += 16) {
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line[0] = 0;
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for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
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sprintf(buf, " %08x", intptr[i / 4 + j]);
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strcat(line, buf);
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}
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buf[0] = ' ';
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buf[2] = 0;
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for (j = 0; (j < 16) && (i + j < length); j++) {
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buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
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strcat(line, buf);
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}
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printk(KERN_DEBUG "%s\n", line);
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}
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}
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#ifdef CONFIG_CIFS_DEBUG2
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void cifs_dump_detail(struct smb_hdr *smb)
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{
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cERROR(1, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
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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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cERROR(1, "smb buf %p len %d", smb, smbCalcSize(smb));
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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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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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cERROR(1, "Dump pending requests:");
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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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cERROR(1, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %d",
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mid_entry->midState,
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(int)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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cERROR(1, "IsLarge: %d buf: %p time rcv: %ld now: %ld",
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mid_entry->largeBuf,
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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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cERROR(1, "IsMult: %d IsEnd: %d", mid_entry->multiRsp,
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mid_entry->multiEnd);
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if (mid_entry->resp_buf) {
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cifs_dump_detail(mid_entry->resp_buf);
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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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}
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#endif /* CONFIG_CIFS_DEBUG2 */
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#ifdef CONFIG_PROC_FS
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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 cifsSesInfo *ses;
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struct cifsTconInfo *tcon;
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int i, j;
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__u32 dev_type;
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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_WEAK_PW_HASH
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seq_printf(m, " lanman");
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#endif
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#ifdef CONFIG_CIFS_POSIX
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seq_printf(m, " posix");
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#endif
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#ifdef CONFIG_CIFS_UPCALL
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seq_printf(m, " 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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i++;
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list_for_each(tmp2, &server->smb_ses_list) {
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ses = list_entry(tmp2, struct cifsSesInfo,
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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) entry for %s not fully "
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"displayed\n\t", i, ses->serverName);
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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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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->secMode,
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atomic_read(&server->inFlight));
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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->inSend),
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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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list_for_each(tmp3, &ses->tcon_list) {
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tcon = list_entry(tmp3, struct cifsTconInfo,
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tcon_list);
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++j;
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dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
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seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
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tcon->treeName, tcon->tc_count);
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if (tcon->nativeFileSystem) {
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seq_printf(m, "Type: %s ",
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tcon->nativeFileSystem);
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}
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seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
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"\nPathComponentMax: %d Status: 0x%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->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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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 %d\n",
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mid_entry->midState,
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(int)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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}
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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 int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, cifs_debug_data_proc_show, NULL);
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}
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static const struct file_operations cifs_debug_data_proc_fops = {
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.owner = THIS_MODULE,
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.open = cifs_debug_data_proc_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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#ifdef CONFIG_CIFS_STATS
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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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char c;
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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 cifsSesInfo *ses;
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struct cifsTconInfo *tcon;
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rc = get_user(c, buffer);
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if (rc)
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return rc;
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if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
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#ifdef CONFIG_CIFS_STATS2
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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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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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list_for_each(tmp2, &server->smb_ses_list) {
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ses = list_entry(tmp2, struct cifsSesInfo,
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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 cifsTconInfo,
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tcon_list);
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atomic_set(&tcon->num_smbs_sent, 0);
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atomic_set(&tcon->num_writes, 0);
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atomic_set(&tcon->num_reads, 0);
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atomic_set(&tcon->num_oplock_brks, 0);
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atomic_set(&tcon->num_opens, 0);
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atomic_set(&tcon->num_posixopens, 0);
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atomic_set(&tcon->num_posixmkdirs, 0);
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atomic_set(&tcon->num_closes, 0);
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atomic_set(&tcon->num_deletes, 0);
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atomic_set(&tcon->num_mkdirs, 0);
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atomic_set(&tcon->num_rmdirs, 0);
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atomic_set(&tcon->num_renames, 0);
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atomic_set(&tcon->num_t2renames, 0);
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atomic_set(&tcon->num_ffirst, 0);
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atomic_set(&tcon->num_fnext, 0);
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atomic_set(&tcon->num_fclose, 0);
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atomic_set(&tcon->num_hardlinks, 0);
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atomic_set(&tcon->num_symlinks, 0);
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atomic_set(&tcon->num_locks, 0);
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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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}
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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;
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struct list_head *tmp1, *tmp2, *tmp3;
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struct TCP_Server_Info *server;
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struct cifsSesInfo *ses;
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struct cifsTconInfo *tcon;
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seq_printf(m,
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"Resources in use\nCIFS Session: %d\n",
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sesInfoAllocCount.counter);
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seq_printf(m, "Share (unique mount targets): %d\n",
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tconInfoAllocCount.counter);
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seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
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bufAllocCount.counter,
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cifs_min_rcv + tcpSesAllocCount.counter);
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seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
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smBufAllocCount.counter, cifs_min_small);
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#ifdef CONFIG_CIFS_STATS2
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seq_printf(m, "Total Large %d Small %d Allocations\n",
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atomic_read(&totBufAllocCount),
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atomic_read(&totSmBufAllocCount));
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#endif /* CONFIG_CIFS_STATS2 */
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seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
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seq_printf(m,
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"\n%d session %d share reconnects\n",
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tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
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seq_printf(m,
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"Total vfs operations: %d maximum at one time: %d\n",
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GlobalCurrentXid, GlobalMaxActiveXid);
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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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list_for_each(tmp2, &server->smb_ses_list) {
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ses = list_entry(tmp2, struct cifsSesInfo,
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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 cifsTconInfo,
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tcon_list);
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i++;
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seq_printf(m, "\n%d) %s", i, tcon->treeName);
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if (tcon->need_reconnect)
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seq_puts(m, "\tDISCONNECTED ");
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seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
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atomic_read(&tcon->num_smbs_sent),
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atomic_read(&tcon->num_oplock_brks));
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seq_printf(m, "\nReads: %d Bytes: %lld",
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atomic_read(&tcon->num_reads),
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(long long)(tcon->bytes_read));
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seq_printf(m, "\nWrites: %d Bytes: %lld",
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atomic_read(&tcon->num_writes),
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(long long)(tcon->bytes_written));
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seq_printf(m, "\nFlushes: %d",
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atomic_read(&tcon->num_flushes));
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seq_printf(m, "\nLocks: %d HardLinks: %d "
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"Symlinks: %d",
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atomic_read(&tcon->num_locks),
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atomic_read(&tcon->num_hardlinks),
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atomic_read(&tcon->num_symlinks));
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seq_printf(m, "\nOpens: %d Closes: %d "
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"Deletes: %d",
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atomic_read(&tcon->num_opens),
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atomic_read(&tcon->num_closes),
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atomic_read(&tcon->num_deletes));
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seq_printf(m, "\nPosix Opens: %d "
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"Posix Mkdirs: %d",
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atomic_read(&tcon->num_posixopens),
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atomic_read(&tcon->num_posixmkdirs));
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seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
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atomic_read(&tcon->num_mkdirs),
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atomic_read(&tcon->num_rmdirs));
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seq_printf(m, "\nRenames: %d T2 Renames %d",
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atomic_read(&tcon->num_renames),
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atomic_read(&tcon->num_t2renames));
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seq_printf(m, "\nFindFirst: %d FNext %d "
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"FClose %d",
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atomic_read(&tcon->num_ffirst),
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atomic_read(&tcon->num_fnext),
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atomic_read(&tcon->num_fclose));
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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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seq_putc(m, '\n');
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return 0;
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}
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static int cifs_stats_proc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, cifs_stats_proc_show, NULL);
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}
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static const struct file_operations cifs_stats_proc_fops = {
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.owner = THIS_MODULE,
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.open = cifs_stats_proc_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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.write = cifs_stats_proc_write,
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};
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#endif /* STATS */
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static struct proc_dir_entry *proc_fs_cifs;
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static const struct file_operations cifsFYI_proc_fops;
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static const struct file_operations cifs_oplock_proc_fops;
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static const struct file_operations cifs_lookup_cache_proc_fops;
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static const struct file_operations traceSMB_proc_fops;
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static const struct file_operations cifs_multiuser_mount_proc_fops;
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static const struct file_operations cifs_security_flags_proc_fops;
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static const struct file_operations cifs_linux_ext_proc_fops;
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void
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cifs_proc_init(void)
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{
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proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
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if (proc_fs_cifs == NULL)
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return;
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proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
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#ifdef CONFIG_CIFS_STATS
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proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
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#endif /* STATS */
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proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
|
|
proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
|
|
proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
|
|
proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
|
|
&cifs_linux_ext_proc_fops);
|
|
proc_create("MultiuserMount", 0, proc_fs_cifs,
|
|
&cifs_multiuser_mount_proc_fops);
|
|
proc_create("SecurityFlags", 0, proc_fs_cifs,
|
|
&cifs_security_flags_proc_fops);
|
|
proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
|
|
&cifs_lookup_cache_proc_fops);
|
|
}
|
|
|
|
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);
|
|
#ifdef CONFIG_CIFS_STATS
|
|
remove_proc_entry("Stats", proc_fs_cifs);
|
|
#endif
|
|
remove_proc_entry("MultiuserMount", proc_fs_cifs);
|
|
remove_proc_entry("OplockEnabled", proc_fs_cifs);
|
|
remove_proc_entry("SecurityFlags", proc_fs_cifs);
|
|
remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
|
|
remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
|
|
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;
|
|
int rc;
|
|
|
|
rc = get_user(c, buffer);
|
|
if (rc)
|
|
return rc;
|
|
if (c == '0' || c == 'n' || c == 'N')
|
|
cifsFYI = 0;
|
|
else if (c == '1' || c == 'y' || c == 'Y')
|
|
cifsFYI = 1;
|
|
else if ((c > '1') && (c <= '9'))
|
|
cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifsFYI_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = cifsFYI_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = cifsFYI_proc_write,
|
|
};
|
|
|
|
static int cifs_oplock_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "%d\n", oplockEnabled);
|
|
return 0;
|
|
}
|
|
|
|
static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, cifs_oplock_proc_show, NULL);
|
|
}
|
|
|
|
static ssize_t cifs_oplock_proc_write(struct file *file,
|
|
const char __user *buffer, size_t count, loff_t *ppos)
|
|
{
|
|
char c;
|
|
int rc;
|
|
|
|
rc = get_user(c, buffer);
|
|
if (rc)
|
|
return rc;
|
|
if (c == '0' || c == 'n' || c == 'N')
|
|
oplockEnabled = 0;
|
|
else if (c == '1' || c == 'y' || c == 'Y')
|
|
oplockEnabled = 1;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifs_oplock_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = cifs_oplock_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = cifs_oplock_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)
|
|
{
|
|
char c;
|
|
int rc;
|
|
|
|
rc = get_user(c, buffer);
|
|
if (rc)
|
|
return rc;
|
|
if (c == '0' || c == 'n' || c == 'N')
|
|
linuxExtEnabled = 0;
|
|
else if (c == '1' || c == 'y' || c == 'Y')
|
|
linuxExtEnabled = 1;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifs_linux_ext_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.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)
|
|
{
|
|
char c;
|
|
int rc;
|
|
|
|
rc = get_user(c, buffer);
|
|
if (rc)
|
|
return rc;
|
|
if (c == '0' || c == 'n' || c == 'N')
|
|
lookupCacheEnabled = 0;
|
|
else if (c == '1' || c == 'y' || c == 'Y')
|
|
lookupCacheEnabled = 1;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifs_lookup_cache_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.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)
|
|
{
|
|
char c;
|
|
int rc;
|
|
|
|
rc = get_user(c, buffer);
|
|
if (rc)
|
|
return rc;
|
|
if (c == '0' || c == 'n' || c == 'N')
|
|
traceSMB = 0;
|
|
else if (c == '1' || c == 'y' || c == 'Y')
|
|
traceSMB = 1;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations traceSMB_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = traceSMB_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = traceSMB_proc_write,
|
|
};
|
|
|
|
static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "%d\n", multiuser_mount);
|
|
return 0;
|
|
}
|
|
|
|
static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
|
|
{
|
|
return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
|
|
}
|
|
|
|
static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
|
|
const char __user *buffer, size_t count, loff_t *ppos)
|
|
{
|
|
char c;
|
|
int rc;
|
|
|
|
rc = get_user(c, buffer);
|
|
if (rc)
|
|
return rc;
|
|
if (c == '0' || c == 'n' || c == 'N')
|
|
multiuser_mount = 0;
|
|
else if (c == '1' || c == 'y' || c == 'Y')
|
|
multiuser_mount = 1;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifs_multiuser_mount_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = cifs_multiuser_mount_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = cifs_multiuser_mount_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);
|
|
}
|
|
|
|
static ssize_t cifs_security_flags_proc_write(struct file *file,
|
|
const char __user *buffer, size_t count, loff_t *ppos)
|
|
{
|
|
unsigned int flags;
|
|
char flags_string[12];
|
|
char c;
|
|
|
|
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 */
|
|
c = flags_string[0];
|
|
if (c == '0' || c == 'n' || c == 'N') {
|
|
global_secflags = CIFSSEC_DEF; /* default */
|
|
return count;
|
|
} else if (c == '1' || c == 'y' || c == 'Y') {
|
|
global_secflags = CIFSSEC_MAX;
|
|
return count;
|
|
} else if (!isdigit(c)) {
|
|
cERROR(1, "invalid flag %c", c);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
/* else we have a number */
|
|
|
|
flags = simple_strtoul(flags_string, NULL, 0);
|
|
|
|
cFYI(1, "sec flags 0x%x", flags);
|
|
|
|
if (flags <= 0) {
|
|
cERROR(1, "invalid security flags %s", flags_string);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (flags & ~CIFSSEC_MASK) {
|
|
cERROR(1, "attempt to set unsupported security flags 0x%x",
|
|
flags & ~CIFSSEC_MASK);
|
|
return -EINVAL;
|
|
}
|
|
/* 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;
|
|
cFYI(1, "packet signing now required");
|
|
} else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
|
|
cFYI(1, "packet signing disabled");
|
|
}
|
|
/* BB should we turn on MAY flags for other MUST options? */
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations cifs_security_flags_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.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 */
|