mirror of https://gitee.com/openkylin/linux.git
1035 lines
30 KiB
C
1035 lines
30 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* fs/cifs_debug.c
|
|
*
|
|
* 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/module.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/uaccess.h>
|
|
#include "cifspdu.h"
|
|
#include "cifsglob.h"
|
|
#include "cifsproto.h"
|
|
#include "cifs_debug.h"
|
|
#include "cifsfs.h"
|
|
#ifdef CONFIG_CIFS_DFS_UPCALL
|
|
#include "dfs_cache.h"
|
|
#endif
|
|
#ifdef CONFIG_CIFS_SMB_DIRECT
|
|
#include "smbdirect.h"
|
|
#endif
|
|
#ifdef CONFIG_CIFS_SWN_UPCALL
|
|
#include "cifs_swn.h"
|
|
#endif
|
|
|
|
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 = (struct smb_hdr *)buf;
|
|
|
|
cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
|
|
smb->Command, smb->Status.CifsError,
|
|
smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
|
|
cifs_dbg(VFS, "smb buf %p len %u\n", smb,
|
|
server->ops->calc_smb_size(smb, server));
|
|
#endif /* CONFIG_CIFS_DEBUG2 */
|
|
}
|
|
|
|
void cifs_dump_mids(struct TCP_Server_Info *server)
|
|
{
|
|
#ifdef CONFIG_CIFS_DEBUG2
|
|
struct list_head *tmp;
|
|
struct mid_q_entry *mid_entry;
|
|
|
|
if (server == NULL)
|
|
return;
|
|
|
|
cifs_dbg(VFS, "Dump pending requests:\n");
|
|
spin_lock(&GlobalMid_Lock);
|
|
list_for_each(tmp, &server->pending_mid_q) {
|
|
mid_entry = list_entry(tmp, struct mid_q_entry, 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(&GlobalMid_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->treeName, 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->tidStatus);
|
|
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
|
|
seq_printf(m, " type: %d ", dev_type);
|
|
|
|
seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
|
|
|
|
if ((tcon->seal) ||
|
|
(tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
|
|
(tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
|
|
seq_printf(m, " Encrypted");
|
|
if (tcon->nocase)
|
|
seq_printf(m, " nocase");
|
|
if (tcon->unix_ext)
|
|
seq_printf(m, " POSIX Extensions");
|
|
if (tcon->ses->server->ops->dump_share_caps)
|
|
tcon->ses->server->ops->dump_share_caps(m, tcon);
|
|
#ifdef CONFIG_CIFS_SWN_UPCALL
|
|
if (tcon->use_witness)
|
|
seq_puts(m, " Witness");
|
|
#endif
|
|
|
|
if (tcon->need_reconnect)
|
|
seq_puts(m, "\tDISCONNECTED ");
|
|
seq_putc(m, '\n');
|
|
}
|
|
|
|
static void
|
|
cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
|
|
{
|
|
struct TCP_Server_Info *server = chan->server;
|
|
|
|
seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
|
|
"\n\t\tNumber of credits: %d Dialect 0x%x"
|
|
"\n\t\tTCP status: %d Instance: %d"
|
|
"\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d"
|
|
"\n\t\tIn Send: %d In MaxReq Wait: %d",
|
|
i+1, server->conn_id,
|
|
server->credits,
|
|
server->dialect,
|
|
server->tcpStatus,
|
|
server->reconnect_instance,
|
|
server->srv_count,
|
|
server->sec_mode,
|
|
in_flight(server),
|
|
atomic_read(&server->in_send),
|
|
atomic_read(&server->num_waiters));
|
|
}
|
|
|
|
static void
|
|
cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
|
|
{
|
|
struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
|
|
struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
|
|
|
|
seq_printf(m, "\tSpeed: %zu bps\n", iface->speed);
|
|
seq_puts(m, "\t\tCapabilities: ");
|
|
if (iface->rdma_capable)
|
|
seq_puts(m, "rdma ");
|
|
if (iface->rss_capable)
|
|
seq_puts(m, "rss ");
|
|
seq_putc(m, '\n');
|
|
if (iface->sockaddr.ss_family == AF_INET)
|
|
seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
|
|
else if (iface->sockaddr.ss_family == AF_INET6)
|
|
seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
|
|
}
|
|
|
|
static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
struct list_head *stmp, *tmp, *tmp1, *tmp2;
|
|
struct TCP_Server_Info *server;
|
|
struct cifs_ses *ses;
|
|
struct cifs_tcon *tcon;
|
|
struct cifsFileInfo *cfile;
|
|
|
|
seq_puts(m, "# Version:1\n");
|
|
seq_puts(m, "# Format:\n");
|
|
seq_puts(m, "# <tree id> <persistent fid> <flags> <count> <pid> <uid>");
|
|
#ifdef CONFIG_CIFS_DEBUG2
|
|
seq_printf(m, " <filename> <mid>\n");
|
|
#else
|
|
seq_printf(m, " <filename>\n");
|
|
#endif /* CIFS_DEBUG2 */
|
|
spin_lock(&cifs_tcp_ses_lock);
|
|
list_for_each(stmp, &cifs_tcp_ses_list) {
|
|
server = list_entry(stmp, struct TCP_Server_Info,
|
|
tcp_ses_list);
|
|
list_for_each(tmp, &server->smb_ses_list) {
|
|
ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
|
|
list_for_each(tmp1, &ses->tcon_list) {
|
|
tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
|
|
spin_lock(&tcon->open_file_lock);
|
|
list_for_each(tmp2, &tcon->openFileList) {
|
|
cfile = list_entry(tmp2, struct cifsFileInfo,
|
|
tlist);
|
|
seq_printf(m,
|
|
"0x%x 0x%llx 0x%x %d %d %d %pd",
|
|
tcon->tid,
|
|
cfile->fid.persistent_fid,
|
|
cfile->f_flags,
|
|
cfile->count,
|
|
cfile->pid,
|
|
from_kuid(&init_user_ns, cfile->uid),
|
|
cfile->dentry);
|
|
#ifdef CONFIG_CIFS_DEBUG2
|
|
seq_printf(m, " 0x%llx\n", cfile->fid.mid);
|
|
#else
|
|
seq_printf(m, "\n");
|
|
#endif /* CIFS_DEBUG2 */
|
|
}
|
|
spin_unlock(&tcon->open_file_lock);
|
|
}
|
|
}
|
|
}
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
seq_putc(m, '\n');
|
|
return 0;
|
|
}
|
|
|
|
static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
struct list_head *tmp1, *tmp2, *tmp3;
|
|
struct mid_q_entry *mid_entry;
|
|
struct TCP_Server_Info *server;
|
|
struct cifs_ses *ses;
|
|
struct cifs_tcon *tcon;
|
|
int c, i, j;
|
|
|
|
seq_puts(m,
|
|
"Display Internal CIFS Data Structures for Debugging\n"
|
|
"---------------------------------------------------\n");
|
|
seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
|
|
seq_printf(m, "Features:");
|
|
#ifdef CONFIG_CIFS_DFS_UPCALL
|
|
seq_printf(m, " DFS");
|
|
#endif
|
|
#ifdef CONFIG_CIFS_FSCACHE
|
|
seq_printf(m, ",FSCACHE");
|
|
#endif
|
|
#ifdef CONFIG_CIFS_SMB_DIRECT
|
|
seq_printf(m, ",SMB_DIRECT");
|
|
#endif
|
|
#ifdef CONFIG_CIFS_STATS2
|
|
seq_printf(m, ",STATS2");
|
|
#else
|
|
seq_printf(m, ",STATS");
|
|
#endif
|
|
#ifdef CONFIG_CIFS_DEBUG2
|
|
seq_printf(m, ",DEBUG2");
|
|
#elif defined(CONFIG_CIFS_DEBUG)
|
|
seq_printf(m, ",DEBUG");
|
|
#endif
|
|
#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
|
|
seq_printf(m, ",ALLOW_INSECURE_LEGACY");
|
|
#endif
|
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH
|
|
seq_printf(m, ",WEAK_PW_HASH");
|
|
#endif
|
|
#ifdef CONFIG_CIFS_POSIX
|
|
seq_printf(m, ",CIFS_POSIX");
|
|
#endif
|
|
#ifdef CONFIG_CIFS_UPCALL
|
|
seq_printf(m, ",UPCALL(SPNEGO)");
|
|
#endif
|
|
#ifdef CONFIG_CIFS_XATTR
|
|
seq_printf(m, ",XATTR");
|
|
#endif
|
|
seq_printf(m, ",ACL");
|
|
#ifdef CONFIG_CIFS_SWN_UPCALL
|
|
seq_puts(m, ",WITNESS");
|
|
#endif
|
|
seq_putc(m, '\n');
|
|
seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
|
|
seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
|
|
|
|
seq_printf(m, "\nServers: ");
|
|
|
|
c = 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);
|
|
|
|
/* channel info will be printed as a part of sessions below */
|
|
if (server->is_channel)
|
|
continue;
|
|
|
|
c++;
|
|
seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
|
|
c, server->conn_id);
|
|
|
|
if (server->hostname)
|
|
seq_printf(m, "Hostname: %s ", server->hostname);
|
|
#ifdef CONFIG_CIFS_SMB_DIRECT
|
|
if (!server->rdma)
|
|
goto skip_rdma;
|
|
|
|
if (!server->smbd_conn) {
|
|
seq_printf(m, "\nSMBDirect transport not available");
|
|
goto skip_rdma;
|
|
}
|
|
|
|
seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
|
|
"transport status: %x",
|
|
server->smbd_conn->protocol,
|
|
server->smbd_conn->transport_status);
|
|
seq_printf(m, "\nConn receive_credit_max: %x "
|
|
"send_credit_target: %x max_send_size: %x",
|
|
server->smbd_conn->receive_credit_max,
|
|
server->smbd_conn->send_credit_target,
|
|
server->smbd_conn->max_send_size);
|
|
seq_printf(m, "\nConn max_fragmented_recv_size: %x "
|
|
"max_fragmented_send_size: %x max_receive_size:%x",
|
|
server->smbd_conn->max_fragmented_recv_size,
|
|
server->smbd_conn->max_fragmented_send_size,
|
|
server->smbd_conn->max_receive_size);
|
|
seq_printf(m, "\nConn keep_alive_interval: %x "
|
|
"max_readwrite_size: %x rdma_readwrite_threshold: %x",
|
|
server->smbd_conn->keep_alive_interval,
|
|
server->smbd_conn->max_readwrite_size,
|
|
server->smbd_conn->rdma_readwrite_threshold);
|
|
seq_printf(m, "\nDebug count_get_receive_buffer: %x "
|
|
"count_put_receive_buffer: %x count_send_empty: %x",
|
|
server->smbd_conn->count_get_receive_buffer,
|
|
server->smbd_conn->count_put_receive_buffer,
|
|
server->smbd_conn->count_send_empty);
|
|
seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
|
|
"count_enqueue_reassembly_queue: %x "
|
|
"count_dequeue_reassembly_queue: %x "
|
|
"fragment_reassembly_remaining: %x "
|
|
"reassembly_data_length: %x "
|
|
"reassembly_queue_length: %x",
|
|
server->smbd_conn->count_reassembly_queue,
|
|
server->smbd_conn->count_enqueue_reassembly_queue,
|
|
server->smbd_conn->count_dequeue_reassembly_queue,
|
|
server->smbd_conn->fragment_reassembly_remaining,
|
|
server->smbd_conn->reassembly_data_length,
|
|
server->smbd_conn->reassembly_queue_length);
|
|
seq_printf(m, "\nCurrent Credits send_credits: %x "
|
|
"receive_credits: %x receive_credit_target: %x",
|
|
atomic_read(&server->smbd_conn->send_credits),
|
|
atomic_read(&server->smbd_conn->receive_credits),
|
|
server->smbd_conn->receive_credit_target);
|
|
seq_printf(m, "\nPending send_pending: %x ",
|
|
atomic_read(&server->smbd_conn->send_pending));
|
|
seq_printf(m, "\nReceive buffers count_receive_queue: %x "
|
|
"count_empty_packet_queue: %x",
|
|
server->smbd_conn->count_receive_queue,
|
|
server->smbd_conn->count_empty_packet_queue);
|
|
seq_printf(m, "\nMR responder_resources: %x "
|
|
"max_frmr_depth: %x mr_type: %x",
|
|
server->smbd_conn->responder_resources,
|
|
server->smbd_conn->max_frmr_depth,
|
|
server->smbd_conn->mr_type);
|
|
seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
|
|
atomic_read(&server->smbd_conn->mr_ready_count),
|
|
atomic_read(&server->smbd_conn->mr_used_count));
|
|
skip_rdma:
|
|
#endif
|
|
seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
|
|
server->credits, server->dialect);
|
|
if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
|
|
seq_printf(m, " COMPRESS_LZNT1");
|
|
else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
|
|
seq_printf(m, " COMPRESS_LZ77");
|
|
else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
|
|
seq_printf(m, " COMPRESS_LZ77_HUFF");
|
|
if (server->sign)
|
|
seq_printf(m, " signed");
|
|
if (server->posix_ext_supported)
|
|
seq_printf(m, " posix");
|
|
|
|
if (server->rdma)
|
|
seq_printf(m, "\nRDMA ");
|
|
seq_printf(m, "\nTCP status: %d Instance: %d"
|
|
"\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
|
|
server->tcpStatus,
|
|
server->reconnect_instance,
|
|
server->srv_count,
|
|
server->sec_mode, in_flight(server));
|
|
|
|
seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
|
|
atomic_read(&server->in_send),
|
|
atomic_read(&server->num_waiters));
|
|
|
|
seq_printf(m, "\n\n\tSessions: ");
|
|
i = 0;
|
|
list_for_each(tmp2, &server->smb_ses_list) {
|
|
ses = list_entry(tmp2, struct cifs_ses,
|
|
smb_ses_list);
|
|
i++;
|
|
if ((ses->serverDomain == NULL) ||
|
|
(ses->serverOS == NULL) ||
|
|
(ses->serverNOS == NULL)) {
|
|
seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
|
|
i, ses->ip_addr, ses->ses_count,
|
|
ses->capabilities, ses->status);
|
|
if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
|
|
seq_printf(m, "Guest ");
|
|
else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
|
|
seq_printf(m, "Anonymous ");
|
|
} else {
|
|
seq_printf(m,
|
|
"\n\t%d) Name: %s Domain: %s Uses: %d OS: %s "
|
|
"\n\tNOS: %s\tCapability: 0x%x"
|
|
"\n\tSMB session status: %d ",
|
|
i, ses->ip_addr, ses->serverDomain,
|
|
ses->ses_count, ses->serverOS, ses->serverNOS,
|
|
ses->capabilities, ses->status);
|
|
}
|
|
|
|
seq_printf(m, "\n\tSecurity type: %s ",
|
|
get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
|
|
|
|
/* dump session id helpful for use with network trace */
|
|
seq_printf(m, " SessionId: 0x%llx", ses->Suid);
|
|
if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
|
|
seq_puts(m, " encrypted");
|
|
if (ses->sign)
|
|
seq_puts(m, " signed");
|
|
|
|
seq_printf(m, "\n\tUser: %d Cred User: %d",
|
|
from_kuid(&init_user_ns, ses->linux_uid),
|
|
from_kuid(&init_user_ns, ses->cred_uid));
|
|
|
|
if (ses->chan_count > 1) {
|
|
seq_printf(m, "\n\n\tExtra Channels: %zu ",
|
|
ses->chan_count-1);
|
|
for (j = 1; j < ses->chan_count; j++)
|
|
cifs_dump_channel(m, j, &ses->chans[j]);
|
|
}
|
|
|
|
seq_puts(m, "\n\n\tShares: ");
|
|
j = 0;
|
|
|
|
seq_printf(m, "\n\t%d) IPC: ", j);
|
|
if (ses->tcon_ipc)
|
|
cifs_debug_tcon(m, ses->tcon_ipc);
|
|
else
|
|
seq_puts(m, "none\n");
|
|
|
|
list_for_each(tmp3, &ses->tcon_list) {
|
|
tcon = list_entry(tmp3, struct cifs_tcon,
|
|
tcon_list);
|
|
++j;
|
|
seq_printf(m, "\n\t%d) ", j);
|
|
cifs_debug_tcon(m, tcon);
|
|
}
|
|
|
|
spin_lock(&ses->iface_lock);
|
|
if (ses->iface_count)
|
|
seq_printf(m, "\n\n\tServer interfaces: %zu",
|
|
ses->iface_count);
|
|
for (j = 0; j < ses->iface_count; j++) {
|
|
struct cifs_server_iface *iface;
|
|
|
|
iface = &ses->iface_list[j];
|
|
seq_printf(m, "\n\t%d)", j+1);
|
|
cifs_dump_iface(m, iface);
|
|
if (is_ses_using_iface(ses, iface))
|
|
seq_puts(m, "\t\t[CONNECTED]\n");
|
|
}
|
|
spin_unlock(&ses->iface_lock);
|
|
}
|
|
if (i == 0)
|
|
seq_printf(m, "\n\t\t[NONE]");
|
|
|
|
seq_puts(m, "\n\n\tMIDs: ");
|
|
spin_lock(&GlobalMid_Lock);
|
|
list_for_each(tmp3, &server->pending_mid_q) {
|
|
mid_entry = list_entry(tmp3, struct mid_q_entry,
|
|
qhead);
|
|
seq_printf(m, "\n\tState: %d com: %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);
|
|
}
|
|
spin_unlock(&GlobalMid_Lock);
|
|
seq_printf(m, "\n--\n");
|
|
}
|
|
if (c == 0)
|
|
seq_printf(m, "\n\t[NONE]");
|
|
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
seq_putc(m, '\n');
|
|
|
|
#ifdef CONFIG_CIFS_SWN_UPCALL
|
|
cifs_swn_dump(m);
|
|
#endif
|
|
/* BB add code to dump additional info such as TCP session info now */
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t cifs_stats_proc_write(struct file *file,
|
|
const char __user *buffer, size_t count, loff_t *ppos)
|
|
{
|
|
bool bv;
|
|
int rc;
|
|
struct list_head *tmp1, *tmp2, *tmp3;
|
|
struct TCP_Server_Info *server;
|
|
struct cifs_ses *ses;
|
|
struct cifs_tcon *tcon;
|
|
|
|
rc = kstrtobool_from_user(buffer, count, &bv);
|
|
if (rc == 0) {
|
|
#ifdef CONFIG_CIFS_STATS2
|
|
int i;
|
|
|
|
atomic_set(&totBufAllocCount, 0);
|
|
atomic_set(&totSmBufAllocCount, 0);
|
|
#endif /* CONFIG_CIFS_STATS2 */
|
|
atomic_set(&tcpSesReconnectCount, 0);
|
|
atomic_set(&tconInfoReconnectCount, 0);
|
|
|
|
spin_lock(&GlobalMid_Lock);
|
|
GlobalMaxActiveXid = 0;
|
|
GlobalCurrentXid = 0;
|
|
spin_unlock(&GlobalMid_Lock);
|
|
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);
|
|
server->max_in_flight = 0;
|
|
#ifdef CONFIG_CIFS_STATS2
|
|
for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
|
|
atomic_set(&server->num_cmds[i], 0);
|
|
atomic_set(&server->smb2slowcmd[i], 0);
|
|
server->time_per_cmd[i] = 0;
|
|
server->slowest_cmd[i] = 0;
|
|
server->fastest_cmd[0] = 0;
|
|
}
|
|
#endif /* CONFIG_CIFS_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);
|
|
atomic_set(&tcon->num_smbs_sent, 0);
|
|
spin_lock(&tcon->stat_lock);
|
|
tcon->bytes_read = 0;
|
|
tcon->bytes_written = 0;
|
|
spin_unlock(&tcon->stat_lock);
|
|
if (server->ops->clear_stats)
|
|
server->ops->clear_stats(tcon);
|
|
}
|
|
}
|
|
}
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
} else {
|
|
return rc;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static int cifs_stats_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
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);
|
|
seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
|
|
#ifdef CONFIG_CIFS_STATS2
|
|
seq_puts(m, "\nTotal time spent processing by command. Time ");
|
|
seq_printf(m, "units are jiffies (%d per second)\n", HZ);
|
|
seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
|
|
seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
|
|
for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
|
|
seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
|
|
atomic_read(&server->num_cmds[j]),
|
|
server->time_per_cmd[j],
|
|
server->fastest_cmd[j],
|
|
server->slowest_cmd[j]);
|
|
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 proc_ops cifs_stats_proc_ops = {
|
|
.proc_open = cifs_stats_proc_open,
|
|
.proc_read = seq_read,
|
|
.proc_lseek = seq_lseek,
|
|
.proc_release = single_release,
|
|
.proc_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 proc_ops cifs_##name##_proc_fops = { \
|
|
.proc_open = name##_open, \
|
|
.proc_read = seq_read, \
|
|
.proc_lseek = seq_lseek, \
|
|
.proc_release = single_release, \
|
|
.proc_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 proc_ops cifsFYI_proc_ops;
|
|
static const struct proc_ops cifs_lookup_cache_proc_ops;
|
|
static const struct proc_ops traceSMB_proc_ops;
|
|
static const struct proc_ops cifs_security_flags_proc_ops;
|
|
static const struct proc_ops cifs_linux_ext_proc_ops;
|
|
|
|
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_single("open_files", 0400, proc_fs_cifs,
|
|
cifs_debug_files_proc_show);
|
|
|
|
proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
|
|
proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
|
|
proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
|
|
proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
|
|
&cifs_linux_ext_proc_ops);
|
|
proc_create("SecurityFlags", 0644, proc_fs_cifs,
|
|
&cifs_security_flags_proc_ops);
|
|
proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
|
|
&cifs_lookup_cache_proc_ops);
|
|
|
|
#ifdef CONFIG_CIFS_DFS_UPCALL
|
|
proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
|
|
#endif
|
|
|
|
#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("open_files", 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_DFS_UPCALL
|
|
remove_proc_entry("dfscache", proc_fs_cifs);
|
|
#endif
|
|
#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 proc_ops cifsFYI_proc_ops = {
|
|
.proc_open = cifsFYI_proc_open,
|
|
.proc_read = seq_read,
|
|
.proc_lseek = seq_lseek,
|
|
.proc_release = single_release,
|
|
.proc_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 proc_ops cifs_linux_ext_proc_ops = {
|
|
.proc_open = cifs_linux_ext_proc_open,
|
|
.proc_read = seq_read,
|
|
.proc_lseek = seq_lseek,
|
|
.proc_release = single_release,
|
|
.proc_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 proc_ops cifs_lookup_cache_proc_ops = {
|
|
.proc_open = cifs_lookup_cache_proc_open,
|
|
.proc_read = seq_read,
|
|
.proc_lseek = seq_lseek,
|
|
.proc_release = single_release,
|
|
.proc_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 proc_ops traceSMB_proc_ops = {
|
|
.proc_open = traceSMB_proc_open,
|
|
.proc_read = seq_read,
|
|
.proc_lseek = seq_lseek,
|
|
.proc_release = single_release,
|
|
.proc_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 proc_ops cifs_security_flags_proc_ops = {
|
|
.proc_open = cifs_security_flags_proc_open,
|
|
.proc_read = seq_read,
|
|
.proc_lseek = seq_lseek,
|
|
.proc_release = single_release,
|
|
.proc_write = cifs_security_flags_proc_write,
|
|
};
|
|
#else
|
|
inline void cifs_proc_init(void)
|
|
{
|
|
}
|
|
|
|
inline void cifs_proc_clean(void)
|
|
{
|
|
}
|
|
#endif /* PROC_FS */
|