#include <linux/fs.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/kstrtox.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/uaccess.h>
#include <uapi/linux/ethtool.h>
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"
#include "fs_context.h"
#ifdef CONFIG_CIFS_DFS_UPCALL
#include "dfs_cache.h"
#endif
#ifdef CONFIG_CIFS_SMB_DIRECT
#include "smbdirect.h"
#include "../common/smbdirect/smbdirect_pdu.h"
#endif
#include "cifs_swn.h"
#include "cached_dir.h"
void
cifs_dump_mem(char *label, void *data, int length)
{
pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
data, length, true);
}
void cifs_dump_mids(struct TCP_Server_Info *server)
{
#ifdef CONFIG_CIFS_DEBUG2
struct mid_q_entry *mid_entry;
if (server == NULL)
return;
cifs_dbg(VFS, "Dump pending requests:\n");
spin_lock(&server->mid_queue_lock);
list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
mid_entry->mid_state,
le16_to_cpu(mid_entry->command),
mid_entry->pid,
mid_entry->callback_data,
mid_entry->mid);
#ifdef CONFIG_CIFS_STATS2
cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
mid_entry->large_buf,
mid_entry->resp_buf,
mid_entry->when_received,
jiffies);
#endif
cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
mid_entry->multiRsp, mid_entry->multiEnd);
if (mid_entry->resp_buf) {
server->ops->dump_detail(mid_entry->resp_buf,
mid_entry->response_pdu_len, server);
cifs_dump_mem("existing buf: ", mid_entry->resp_buf, 62);
}
}
spin_unlock(&server->mid_queue_lock);
#endif
}
#ifdef CONFIG_PROC_FS
static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
{
__u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count);
if (tcon->nativeFileSystem)
seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
le32_to_cpu(tcon->fsAttrInfo.Attributes),
le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
tcon->status);
if (dev_type == FILE_DEVICE_DISK)
seq_puts(m, " type: DISK ");
else if (dev_type == FILE_DEVICE_CD_ROM)
seq_puts(m, " type: CDROM ");
else
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_puts(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);
if (tcon->use_witness)
seq_puts(m, " Witness");
if (tcon->broken_sparse_sup)
seq_puts(m, " nosparse");
if (tcon->need_reconnect)
seq_puts(m, "\tDISCONNECTED ");
spin_lock(&tcon->tc_lock);
if (tcon->origin_fullpath) {
seq_printf(m, "\n\tDFS origin fullpath: %s",
tcon->origin_fullpath);
}
spin_unlock(&tcon->tc_lock);
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;
if (!server) {
seq_printf(m, "\n\n\t\tChannel: %d DISABLED", i+1);
return;
}
seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
"\n\t\tNumber of credits: %d,%d,%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->echo_credits,
server->oplock_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));
#ifdef CONFIG_NET_NS
if (server->net)
seq_printf(m, " Net namespace: %u ", server->net->ns.inum);
#endif
}
static inline const char *smb_speed_to_str(size_t bps)
{
size_t mbps = bps / 1000 / 1000;
switch (mbps) {
case SPEED_10:
return "10Mbps";
case SPEED_100:
return "100Mbps";
case SPEED_1000:
return "1Gbps";
case SPEED_2500:
return "2.5Gbps";
case SPEED_5000:
return "5Gbps";
case SPEED_10000:
return "10Gbps";
case SPEED_14000:
return "14Gbps";
case SPEED_20000:
return "20Gbps";
case SPEED_25000:
return "25Gbps";
case SPEED_40000:
return "40Gbps";
case SPEED_50000:
return "50Gbps";
case SPEED_56000:
return "56Gbps";
case SPEED_100000:
return "100Gbps";
case SPEED_200000:
return "200Gbps";
case SPEED_400000:
return "400Gbps";
case SPEED_800000:
return "800Gbps";
default:
return "Unknown";
}
}
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: %s\n", smb_speed_to_str(iface->speed));
seq_puts(m, "\t\tCapabilities: ");
if (iface->rdma_capable)
seq_puts(m, "rdma ");
if (iface->rss_capable)
seq_puts(m, "rss ");
if (!iface->rdma_capable && !iface->rss_capable)
seq_puts(m, "None");
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);
if (!iface->is_active)
seq_puts(m, "\t\t[for-cleanup]\n");
}
static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
{
struct TCP_Server_Info *server;
struct cifs_ses *ses;
struct cifs_tcon *tcon;
struct cifsFileInfo *cfile;
struct inode *inode;
struct cifsInodeInfo *cinode;
char lease[4];
int n;
seq_puts(m, "# Version:1\n");
seq_puts(m, "# Format:\n");
seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>");
#ifdef CONFIG_CIFS_DEBUG2
seq_puts(m, " <filename> <lease> <lease-key> <mid>\n");
#else
seq_puts(m, " <filename> <lease> <lease-key>\n");
#endif
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
if (cifs_ses_exiting(ses))
continue;
list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
spin_lock(&tcon->open_file_lock);
list_for_each_entry(cfile, &tcon->openFileList, tlist) {
seq_printf(m,
"0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd",
tcon->tid,
ses->Suid,
cfile->fid.persistent_fid,
cfile->f_flags,
cfile->count,
cfile->pid,
from_kuid(&init_user_ns, cfile->uid),
cfile->dentry);
inode = d_inode(cfile->dentry);
cinode = NULL;
n = 0;
if (inode) {
cinode = CIFS_I(inode);
if (CIFS_CACHE_READ(cinode))
lease[n++] = 'R';
if (CIFS_CACHE_HANDLE(cinode))
lease[n++] = 'H';
if (CIFS_CACHE_WRITE(cinode))
lease[n++] = 'W';
}
lease[n] = '\0';
seq_puts(m, " ");
if (n)
seq_printf(m, "%s", lease);
else
seq_puts(m, "NONE");
seq_puts(m, " ");
if (cinode && cinode->lease_granted)
seq_printf(m, "%pUl", cinode->lease_key);
else
seq_puts(m, "-");
#ifdef CONFIG_CIFS_DEBUG2
seq_printf(m, " %llu", cfile->fid.mid);
#endif
seq_printf(m, "\n");
}
spin_unlock(&tcon->open_file_lock);
}
}
}
spin_unlock(&cifs_tcp_ses_lock);
seq_putc(m, '\n');
return 0;
}
static int cifs_debug_dirs_proc_show(struct seq_file *m, void *v)
{
struct list_head *stmp, *tmp, *tmp1;
struct TCP_Server_Info *server;
struct cifs_ses *ses;
struct cifs_tcon *tcon;
struct cached_fids *cfids;
struct cached_fid *cfid;
LIST_HEAD(entry);
seq_puts(m, "# Version:1\n");
seq_puts(m, "# Format:\n");
seq_puts(m, "# <tree id> <sess id> <persistent fid> <lease-key> <path>\n");
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);
cfids = tcon->cfids;
if (!cfids)
continue;
spin_lock(&cfids->cfid_list_lock);
seq_printf(m, "Num entries: %d, cached_dirents: %lu entries, %llu bytes\n",
cfids->num_entries,
(unsigned long)atomic_long_read(&cfids->total_dirents_entries),
(unsigned long long)atomic64_read(&cfids->total_dirents_bytes));
list_for_each_entry(cfid, &cfids->entries, entry) {
seq_printf(m, "0x%x 0x%llx 0x%llx ",
tcon->tid,
ses->Suid,
cfid->fid.persistent_fid);
if (cfid->has_lease)
seq_printf(m, "%pUl ", cfid->fid.lease_key);
else
seq_puts(m, "- ");
seq_printf(m, "%s", cfid->path);
if (cfid->file_all_info_is_valid)
seq_printf(m, "\tvalid file info");
if (cfid->dirents.is_valid)
seq_printf(m, ", valid dirents");
if (!list_empty(&cfid->dirents.entries))
seq_printf(m, ", dirents: %lu entries, %lu bytes",
cfid->dirents.entries_count, cfid->dirents.bytes_used);
seq_printf(m, "\n");
}
spin_unlock(&cfids->cfid_list_lock);
}
}
}
spin_unlock(&cifs_tcp_ses_lock);
seq_putc(m, '\n');
return 0;
}
static __always_inline const char *compression_alg_str(__le16 alg)
{
switch (alg) {
case SMB3_COMPRESS_NONE:
return "NONE";
case SMB3_COMPRESS_LZNT1:
return "LZNT1";
case SMB3_COMPRESS_LZ77:
return "LZ77";
case SMB3_COMPRESS_LZ77_HUFF:
return "LZ77-Huffman";
case SMB3_COMPRESS_PATTERN:
return "Pattern_V1";
default:
return "invalid";
}
}
static __always_inline const char *cipher_alg_str(__le16 cipher)
{
switch (cipher) {
case SMB2_ENCRYPTION_AES128_CCM:
return "AES128-CCM";
case SMB2_ENCRYPTION_AES128_GCM:
return "AES128-GCM";
case SMB2_ENCRYPTION_AES256_CCM:
return "AES256-CCM";
case SMB2_ENCRYPTION_AES256_GCM:
return "AES256-GCM";
default:
return "UNKNOWN";
}
}
static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
{
struct mid_q_entry *mid_entry;
struct TCP_Server_Info *server;
struct TCP_Server_Info *chan_server;
struct cifs_ses *ses;
struct cifs_tcon *tcon;
struct cifs_server_iface *iface;
size_t iface_weight = 0, iface_min_speed = 0;
struct cifs_server_iface *last_iface = NULL;
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_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
#ifdef CONFIG_CIFS_COMPRESSION
seq_puts(m, ",COMPRESSION");
#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_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
#ifdef CONFIG_CIFS_SMB_DIRECT
struct smbdirect_socket *sc;
struct smbdirect_socket_parameters *sp;
#endif
if (SERVER_IS_CHAN(server))
continue;
c++;
seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
c, server->conn_id);
spin_lock(&server->srv_lock);
if (server->hostname)
seq_printf(m, "Hostname: %s ", server->hostname);
seq_printf(m, "\nClientGUID: %pUL", server->client_guid);
spin_unlock(&server->srv_lock);
#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;
}
sc = &server->smbd_conn->socket;
sp = &sc->parameters;
seq_printf(m, "\nSMBDirect protocol version: 0x%x "
"transport status: %s (%u)",
SMBDIRECT_V1,
smbdirect_socket_status_string(sc->status),
sc->status);
seq_printf(m, "\nConn receive_credit_max: %u "
"send_credit_target: %u max_send_size: %u",
sp->recv_credit_max,
sp->send_credit_target,
sp->max_send_size);
seq_printf(m, "\nConn max_fragmented_recv_size: %u "
"max_fragmented_send_size: %u max_receive_size:%u",
sp->max_fragmented_recv_size,
sp->max_fragmented_send_size,
sp->max_recv_size);
seq_printf(m, "\nConn keep_alive_interval: %u "
"max_readwrite_size: %u rdma_readwrite_threshold: %u",
sp->keepalive_interval_msec * 1000,
sp->max_read_write_size,
server->rdma_readwrite_threshold);
seq_printf(m, "\nDebug count_get_receive_buffer: %llu "
"count_put_receive_buffer: %llu count_send_empty: %llu",
sc->statistics.get_receive_buffer,
sc->statistics.put_receive_buffer,
sc->statistics.send_empty);
seq_printf(m, "\nRead Queue "
"count_enqueue_reassembly_queue: %llu "
"count_dequeue_reassembly_queue: %llu "
"reassembly_data_length: %u "
"reassembly_queue_length: %u",
sc->statistics.enqueue_reassembly_queue,
sc->statistics.dequeue_reassembly_queue,
sc->recv_io.reassembly.data_length,
sc->recv_io.reassembly.queue_length);
seq_printf(m, "\nCurrent Credits send_credits: %u "
"receive_credits: %u receive_credit_target: %u",
atomic_read(&sc->send_io.credits.count),
atomic_read(&sc->recv_io.credits.count),
sc->recv_io.credits.target);
seq_printf(m, "\nPending send_pending: %u ",
atomic_read(&sc->send_io.pending.count));
seq_printf(m, "\nMR responder_resources: %u "
"max_frmr_depth: %u mr_type: 0x%x",
sp->responder_resources,
sp->max_frmr_depth,
sc->mr_io.type);
seq_printf(m, "\nMR mr_ready_count: %u mr_used_count: %u",
atomic_read(&sc->mr_io.ready.count),
atomic_read(&sc->mr_io.used.count));
skip_rdma:
#endif
seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x",
server->credits,
server->echo_credits,
server->oplock_credits,
server->dialect);
if (server->sign)
seq_printf(m, " signed");
if (server->posix_ext_supported)
seq_printf(m, " posix");
if (server->nosharesock)
seq_printf(m, " nosharesock");
seq_printf(m, "\nServer capabilities: 0x%x", server->capabilities);
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));
#ifdef CONFIG_NET_NS
if (server->net)
seq_printf(m, " Net namespace: %u ", server->net->ns.inum);
#endif
seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
atomic_read(&server->in_send),
atomic_read(&server->num_waiters));
if (server->leaf_fullpath) {
seq_printf(m, "\nDFS leaf full path: %s",
server->leaf_fullpath);
}
seq_puts(m, "\nCompression: ");
if (!IS_ENABLED(CONFIG_CIFS_COMPRESSION))
seq_puts(m, "no built-in support");
else if (!server->compression.requested)
seq_puts(m, "disabled on mount");
else if (server->compression.enabled)
seq_printf(m, "enabled (%s)", compression_alg_str(server->compression.alg));
else
seq_puts(m, "disabled (not supported by this server)");
seq_puts(m, "\nEncryption: ");
if (server->cipher_type)
seq_printf(m, "Negotiated cipher (%s)", cipher_alg_str(server->cipher_type));
seq_printf(m, "\n\n\tSessions: ");
i = 0;
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
spin_lock(&ses->ses_lock);
if (ses->ses_status == SES_EXITING) {
spin_unlock(&ses->ses_lock);
continue;
}
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->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->ses_status);
}
if (ses->expired_pwd)
seq_puts(m, "password no longer valid ");
spin_unlock(&ses->ses_lock);
seq_printf(m, "\n\tSecurity type: %s ",
get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
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->dfs_root_ses) {
seq_printf(m, "\n\tDFS root session id: 0x%llx",
ses->dfs_root_ses->Suid);
}
spin_lock(&ses->chan_lock);
if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
seq_puts(m, "\tPrimary channel: DISCONNECTED ");
if (CIFS_CHAN_IN_RECONNECT(ses, 0))
seq_puts(m, "\t[RECONNECTING] ");
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]);
if (CIFS_CHAN_NEEDS_RECONNECT(ses, j))
seq_puts(m, "\tDISCONNECTED ");
if (CIFS_CHAN_IN_RECONNECT(ses, j))
seq_puts(m, "\t[RECONNECTING] ");
}
}
spin_unlock(&ses->chan_lock);
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_entry(tcon, &ses->tcon_list, 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"
"\tLast updated: %lu seconds ago",
ses->iface_count,
(jiffies - ses->iface_last_update) / HZ);
last_iface = list_last_entry(&ses->iface_list,
struct cifs_server_iface,
iface_head);
iface_min_speed = last_iface->speed;
j = 0;
list_for_each_entry(iface, &ses->iface_list,
iface_head) {
seq_printf(m, "\n\t%d)", ++j);
cifs_dump_iface(m, iface);
iface_weight = iface->speed / iface_min_speed;
seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)"
"\n\t\tAllocated channels: %u\n",
iface->weight_fulfilled,
iface_weight,
iface->num_channels);
if (is_ses_using_iface(ses, iface))
seq_puts(m, "\t\t[CONNECTED]\n");
}
spin_unlock(&ses->iface_lock);
seq_puts(m, "\n\n\tMIDs: ");
spin_lock(&ses->chan_lock);
for (j = 0; j < ses->chan_count; j++) {
chan_server = ses->chans[j].server;
if (!chan_server)
continue;
if (list_empty(&chan_server->pending_mid_q))
continue;
seq_printf(m, "\n\tServer ConnectionId: 0x%llx",
chan_server->conn_id);
spin_lock(&chan_server->mid_queue_lock);
list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) {
seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu",
mid_entry->mid_state,
le16_to_cpu(mid_entry->command),
mid_entry->pid,
mid_entry->callback_data,
mid_entry->mid);
}
spin_unlock(&chan_server->mid_queue_lock);
}
spin_unlock(&ses->chan_lock);
seq_puts(m, "\n--\n");
}
if (i == 0)
seq_printf(m, "\n\t\t[NONE]");
}
if (c == 0)
seq_printf(m, "\n\t[NONE]");
spin_unlock(&cifs_tcp_ses_lock);
seq_putc(m, '\n');
cifs_swn_dump(m);
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 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(&total_buf_alloc_count, 0);
atomic_set(&total_small_buf_alloc_count, 0);
#endif
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_entry(server, &cifs_tcp_ses_list, 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
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
if (cifs_ses_exiting(ses))
continue;
list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
atomic_set(&tcon->num_smbs_sent, 0);
spin_lock(&tcon->stat_lock);
tcon->bytes_read = 0;
tcon->bytes_written = 0;
tcon->stats_from_time = ktime_get_real_seconds();
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
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",
buf_alloc_count.counter,
cifs_min_rcv + tcpSesAllocCount.counter);
seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
small_buf_alloc_count.counter, cifs_min_small);
#ifdef CONFIG_CIFS_STATS2
seq_printf(m, "Total Large %d Small %d Allocations\n",
atomic_read(&total_buf_alloc_count),
atomic_read(&total_small_buf_alloc_count));
#endif
seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count));
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_entry(server, &cifs_tcp_ses_list, 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])) {
spin_lock(&server->srv_lock);
seq_printf(m, " %d slow responses from %s for command %d\n",
atomic_read(&server->smb2slowcmd[j]),
server->hostname, j);
spin_unlock(&server->srv_lock);
}
#endif
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
if (cifs_ses_exiting(ses))
continue;
list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
i++;
seq_printf(m, "\n%d) %s", i, tcon->tree_name);
if (tcon->need_reconnect)
seq_puts(m, "\tDISCONNECTED ");
seq_printf(m, "\nSMBs: %d since %ptTs UTC",
atomic_read(&tcon->num_smbs_sent),
&tcon->stats_from_time);
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;
static const struct proc_ops cifs_mount_params_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_single("open_dirs", 0400, proc_fs_cifs,
cifs_debug_dirs_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);
proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_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("open_dirs", 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);
remove_proc_entry("mount_params", 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 (kstrtobool(c, &bv) == 0)
cifsFYI = bv;
else if ((c[0] > '1') && (c[0] <= '9'))
cifsFYI = (int) (c[0] - '0');
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);
}
static void
cifs_security_flags_handle_must_flags(unsigned int *flags)
{
unsigned int signflags = *flags & (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL);
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;
*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, sizeof(flags_string));
if (copy_from_user(flags_string, buffer, count))
return -EFAULT;
if (count < 3) {
if (kstrtobool(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;
}
}
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);
global_secflags = flags;
if (global_secflags & CIFSSEC_MUST_SIGN) {
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");
}
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,
};
static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
{
const struct fs_parameter_spec *p;
const char *type;
for (p = smb3_fs_parameters; p->name; p++) {
if (!p->type) {
if (p->flags == fs_param_neg_with_no)
type = "noflag";
else
type = "flag";
} else if (p->type == fs_param_is_bool)
type = "bool";
else if (p->type == fs_param_is_u32)
type = "u32";
else if (p->type == fs_param_is_u64)
type = "u64";
else if (p->type == fs_param_is_string)
type = "string";
else
type = "unknown";
seq_printf(m, "%s:%s\n", p->name, type);
}
return 0;
}
static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, cifs_mount_params_proc_show, NULL);
}
static const struct proc_ops cifs_mount_params_proc_ops = {
.proc_open = cifs_mount_params_proc_open,
.proc_read = seq_read,
.proc_lseek = seq_lseek,
.proc_release = single_release,
};
#else
void cifs_proc_init(void)
{
}
void cifs_proc_clean(void)
{
}
#endif
