| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * |
| * Copyright (C) International Business Machines Corp., 2000,2005 |
| * |
| * Modified by Steve French (sfrench@us.ibm.com) |
| */ |
| #include <linux/fs.h> |
| #include <linux/string.h> |
| #include <linux/ctype.h> |
| #include <linux/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" |
| #include "fs_context.h" |
| #ifdef CONFIG_CIFS_DFS_UPCALL |
| #include "dfs_cache.h" |
| #endif |
| #ifdef CONFIG_CIFS_SMB_DIRECT |
| #include "smbdirect.h" |
| #endif |
| #include "cifs_swn.h" |
| |
| void |
| cifs_dump_mem(char *label, void *data, int length) |
| { |
| pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data); |
| print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4, |
| data, length, true); |
| } |
| |
| void cifs_dump_detail(void *buf, struct TCP_Server_Info *server) |
| { |
| #ifdef CONFIG_CIFS_DEBUG2 |
| struct smb_hdr *smb = (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 mid_q_entry *mid_entry; |
| |
| if (server == NULL) |
| return; |
| |
| cifs_dbg(VFS, "Dump pending requests:\n"); |
| spin_lock(&GlobalMid_Lock); |
| list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) { |
| cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n", |
| mid_entry->mid_state, |
| le16_to_cpu(mid_entry->command), |
| mid_entry->pid, |
| mid_entry->callback_data, |
| mid_entry->mid); |
| #ifdef CONFIG_CIFS_STATS2 |
| cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n", |
| mid_entry->large_buf, |
| mid_entry->resp_buf, |
| mid_entry->when_received, |
| jiffies); |
| #endif /* STATS2 */ |
| cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n", |
| mid_entry->multiRsp, mid_entry->multiEnd); |
| if (mid_entry->resp_buf) { |
| cifs_dump_detail(mid_entry->resp_buf, server); |
| cifs_dump_mem("existing buf: ", |
| mid_entry->resp_buf, 62); |
| } |
| } |
| spin_unlock(&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->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_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); |
| 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 "); |
| 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); |
| 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 list_head *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_entry(server, &cifs_tcp_ses_list, 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, " %llu\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 *tmp2, *tmp3; |
| struct mid_q_entry *mid_entry; |
| struct TCP_Server_Info *server; |
| struct cifs_ses *ses; |
| struct cifs_tcon *tcon; |
| struct cifs_server_iface *iface; |
| 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 |
| 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) { |
| /* channel info will be printed as a part of sessions below */ |
| if (CIFS_SERVER_IS_CHAN(server)) |
| 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->nosharesock) |
| seq_printf(m, " nosharesock"); |
| |
| 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->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); |
| } |
| |
| 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)); |
| |
| 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(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); |
| j = 0; |
| list_for_each_entry(iface, &ses->iface_list, |
| iface_head) { |
| seq_printf(m, "\n\t%d)", ++j); |
| 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'); |
| cifs_swn_dump(m); |
| |
| /* 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 *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_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])) |
| 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; |
| 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("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("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 (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; |
| |
| *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, |
| }; |
| |
| /* To make it easier to debug, can help to show mount params */ |
| 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++) { |
| /* cannot use switch with pointers... */ |
| 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, |
| /* No need for write for now */ |
| /* .proc_write = cifs_mount_params_proc_write, */ |
| }; |
| |
| #else |
| inline void cifs_proc_init(void) |
| { |
| } |
| |
| inline void cifs_proc_clean(void) |
| { |
| } |
| #endif /* PROC_FS */ |