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- /*
- * fs/cifs_debug.c
- *
- * Copyright (C) International Business Machines Corp., 2000,2005
- *
- * Modified by Steve French (sfrench@us.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #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_SMB_DIRECT
- #include "smbdirect.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);
- if (tcon->seal)
- 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->need_reconnect)
- seq_puts(m, "\tDISCONNECTED ");
- seq_putc(m, '\n');
- }
- 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, "\t\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_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 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
- #ifdef CONFIG_CIFS_ACL
- seq_printf(m, ",ACL");
- #endif
- seq_putc(m, '\n');
- seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
- seq_printf(m, "Servers:");
- i = 0;
- spin_lock(&cifs_tcp_ses_lock);
- list_for_each(tmp1, &cifs_tcp_ses_list) {
- server = list_entry(tmp1, struct TCP_Server_Info,
- tcp_ses_list);
- #ifdef CONFIG_CIFS_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 send_payload_pending:"
- " %x smbd_send_pending: %x smbd_recv_pending: %x",
- atomic_read(&server->smbd_conn->send_pending),
- atomic_read(&server->smbd_conn->send_payload_pending),
- server->smbd_conn->smbd_send_pending,
- server->smbd_conn->smbd_recv_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->sign)
- seq_printf(m, " signed");
- if (server->posix_ext_supported)
- seq_printf(m, " posix");
- i++;
- list_for_each(tmp2, &server->smb_ses_list) {
- ses = list_entry(tmp2, struct cifs_ses,
- smb_ses_list);
- if ((ses->serverDomain == NULL) ||
- (ses->serverOS == NULL) ||
- (ses->serverNOS == NULL)) {
- seq_printf(m, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d\t",
- i, ses->serverName, ses->ses_count,
- ses->capabilities, ses->status);
- if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
- seq_printf(m, "Guest\t");
- else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
- seq_printf(m, "Anonymous\t");
- } else {
- seq_printf(m,
- "\n%d) Name: %s Domain: %s Uses: %d OS:"
- " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
- " session status: %d\t",
- i, ses->serverName, ses->serverDomain,
- ses->ses_count, ses->serverOS, ses->serverNOS,
- ses->capabilities, ses->status);
- }
- if (server->rdma)
- seq_printf(m, "RDMA\n\t");
- seq_printf(m, "TCP status: %d\n\tLocal Users To "
- "Server: %d SecMode: 0x%x Req On Wire: %d",
- server->tcpStatus, server->srv_count,
- server->sec_mode, in_flight(server));
- #ifdef CONFIG_CIFS_STATS2
- seq_printf(m, " In Send: %d In MaxReq Wait: %d",
- atomic_read(&server->in_send),
- atomic_read(&server->num_waiters));
- #endif
- seq_puts(m, "\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);
- }
- seq_puts(m, "\n\tMIDs:\n");
- 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, "\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);
- spin_lock(&ses->iface_lock);
- if (ses->iface_count)
- seq_printf(m, "\n\tServer interfaces: %zu\n",
- ses->iface_count);
- for (j = 0; j < ses->iface_count; j++) {
- seq_printf(m, "\t%d)\n", j);
- cifs_dump_iface(m, &ses->iface_list[j]);
- }
- spin_unlock(&ses->iface_lock);
- }
- }
- spin_unlock(&cifs_tcp_ses_lock);
- seq_putc(m, '\n');
- /* 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);
- #ifdef CONFIG_CIFS_STATS2
- for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++)
- atomic_set(&server->smb2slowcmd[i], 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);
- #ifdef CONFIG_CIFS_STATS2
- for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
- if (atomic_read(&server->smb2slowcmd[j]))
- seq_printf(m, "%d slow responses from %s for command %d\n",
- atomic_read(&server->smb2slowcmd[j]),
- server->hostname, j);
- #endif /* STATS2 */
- list_for_each(tmp2, &server->smb_ses_list) {
- ses = list_entry(tmp2, struct cifs_ses,
- smb_ses_list);
- list_for_each(tmp3, &ses->tcon_list) {
- tcon = list_entry(tmp3,
- struct cifs_tcon,
- tcon_list);
- i++;
- seq_printf(m, "\n%d) %s", i, tcon->treeName);
- if (tcon->need_reconnect)
- seq_puts(m, "\tDISCONNECTED ");
- seq_printf(m, "\nSMBs: %d",
- atomic_read(&tcon->num_smbs_sent));
- if (server->ops->print_stats)
- server->ops->print_stats(m, tcon);
- }
- }
- }
- spin_unlock(&cifs_tcp_ses_lock);
- seq_putc(m, '\n');
- return 0;
- }
- static int cifs_stats_proc_open(struct inode *inode, struct file *file)
- {
- return single_open(file, cifs_stats_proc_show, NULL);
- }
- static const struct file_operations cifs_stats_proc_fops = {
- .open = cifs_stats_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifs_stats_proc_write,
- };
- #ifdef CONFIG_CIFS_SMB_DIRECT
- #define PROC_FILE_DEFINE(name) \
- static ssize_t name##_write(struct file *file, const char __user *buffer, \
- size_t count, loff_t *ppos) \
- { \
- int rc; \
- rc = kstrtoint_from_user(buffer, count, 10, & name); \
- if (rc) \
- return rc; \
- return count; \
- } \
- static int name##_proc_show(struct seq_file *m, void *v) \
- { \
- seq_printf(m, "%d\n", name ); \
- return 0; \
- } \
- static int name##_open(struct inode *inode, struct file *file) \
- { \
- return single_open(file, name##_proc_show, NULL); \
- } \
- \
- static const struct file_operations cifs_##name##_proc_fops = { \
- .open = name##_open, \
- .read = seq_read, \
- .llseek = seq_lseek, \
- .release = single_release, \
- .write = name##_write, \
- }
- PROC_FILE_DEFINE(rdma_readwrite_threshold);
- PROC_FILE_DEFINE(smbd_max_frmr_depth);
- PROC_FILE_DEFINE(smbd_keep_alive_interval);
- PROC_FILE_DEFINE(smbd_max_receive_size);
- PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
- PROC_FILE_DEFINE(smbd_max_send_size);
- PROC_FILE_DEFINE(smbd_send_credit_target);
- PROC_FILE_DEFINE(smbd_receive_credit_max);
- #endif
- static struct proc_dir_entry *proc_fs_cifs;
- static const struct file_operations cifsFYI_proc_fops;
- static const struct file_operations cifs_lookup_cache_proc_fops;
- static const struct file_operations traceSMB_proc_fops;
- static const struct file_operations cifs_security_flags_proc_fops;
- static const struct file_operations cifs_linux_ext_proc_fops;
- void
- cifs_proc_init(void)
- {
- proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
- if (proc_fs_cifs == NULL)
- return;
- proc_create_single("DebugData", 0, proc_fs_cifs,
- cifs_debug_data_proc_show);
- proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_fops);
- proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_fops);
- proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_fops);
- proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
- &cifs_linux_ext_proc_fops);
- proc_create("SecurityFlags", 0644, proc_fs_cifs,
- &cifs_security_flags_proc_fops);
- proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
- &cifs_lookup_cache_proc_fops);
- #ifdef CONFIG_CIFS_SMB_DIRECT
- proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
- &cifs_rdma_readwrite_threshold_proc_fops);
- proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
- &cifs_smbd_max_frmr_depth_proc_fops);
- proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
- &cifs_smbd_keep_alive_interval_proc_fops);
- proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
- &cifs_smbd_max_receive_size_proc_fops);
- proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
- &cifs_smbd_max_fragmented_recv_size_proc_fops);
- proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
- &cifs_smbd_max_send_size_proc_fops);
- proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
- &cifs_smbd_send_credit_target_proc_fops);
- proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
- &cifs_smbd_receive_credit_max_proc_fops);
- #endif
- }
- void
- cifs_proc_clean(void)
- {
- if (proc_fs_cifs == NULL)
- return;
- remove_proc_entry("DebugData", proc_fs_cifs);
- remove_proc_entry("cifsFYI", proc_fs_cifs);
- remove_proc_entry("traceSMB", proc_fs_cifs);
- remove_proc_entry("Stats", proc_fs_cifs);
- remove_proc_entry("SecurityFlags", proc_fs_cifs);
- remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
- remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
- #ifdef CONFIG_CIFS_SMB_DIRECT
- remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
- remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
- remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
- remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
- remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
- remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
- remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
- remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
- #endif
- remove_proc_entry("fs/cifs", NULL);
- }
- static int cifsFYI_proc_show(struct seq_file *m, void *v)
- {
- seq_printf(m, "%d\n", cifsFYI);
- return 0;
- }
- static int cifsFYI_proc_open(struct inode *inode, struct file *file)
- {
- return single_open(file, cifsFYI_proc_show, NULL);
- }
- static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos)
- {
- char c[2] = { '\0' };
- bool bv;
- int rc;
- rc = get_user(c[0], buffer);
- if (rc)
- return rc;
- if (strtobool(c, &bv) == 0)
- cifsFYI = bv;
- else if ((c[0] > '1') && (c[0] <= '9'))
- cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
- else
- return -EINVAL;
- return count;
- }
- static const struct file_operations cifsFYI_proc_fops = {
- .open = cifsFYI_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifsFYI_proc_write,
- };
- static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
- {
- seq_printf(m, "%d\n", linuxExtEnabled);
- return 0;
- }
- static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
- {
- return single_open(file, cifs_linux_ext_proc_show, NULL);
- }
- static ssize_t cifs_linux_ext_proc_write(struct file *file,
- const char __user *buffer, size_t count, loff_t *ppos)
- {
- int rc;
- rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
- if (rc)
- return rc;
- return count;
- }
- static const struct file_operations cifs_linux_ext_proc_fops = {
- .open = cifs_linux_ext_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifs_linux_ext_proc_write,
- };
- static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
- {
- seq_printf(m, "%d\n", lookupCacheEnabled);
- return 0;
- }
- static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
- {
- return single_open(file, cifs_lookup_cache_proc_show, NULL);
- }
- static ssize_t cifs_lookup_cache_proc_write(struct file *file,
- const char __user *buffer, size_t count, loff_t *ppos)
- {
- int rc;
- rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
- if (rc)
- return rc;
- return count;
- }
- static const struct file_operations cifs_lookup_cache_proc_fops = {
- .open = cifs_lookup_cache_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifs_lookup_cache_proc_write,
- };
- static int traceSMB_proc_show(struct seq_file *m, void *v)
- {
- seq_printf(m, "%d\n", traceSMB);
- return 0;
- }
- static int traceSMB_proc_open(struct inode *inode, struct file *file)
- {
- return single_open(file, traceSMB_proc_show, NULL);
- }
- static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos)
- {
- int rc;
- rc = kstrtobool_from_user(buffer, count, &traceSMB);
- if (rc)
- return rc;
- return count;
- }
- static const struct file_operations traceSMB_proc_fops = {
- .open = traceSMB_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = traceSMB_proc_write,
- };
- static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
- {
- seq_printf(m, "0x%x\n", global_secflags);
- return 0;
- }
- static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
- {
- return single_open(file, cifs_security_flags_proc_show, NULL);
- }
- /*
- * Ensure that if someone sets a MUST flag, that we disable all other MAY
- * flags except for the ones corresponding to the given MUST flag. If there are
- * multiple MUST flags, then try to prefer more secure ones.
- */
- static void
- cifs_security_flags_handle_must_flags(unsigned int *flags)
- {
- unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
- if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
- *flags = CIFSSEC_MUST_KRB5;
- else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
- *flags = CIFSSEC_MUST_NTLMSSP;
- else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
- *flags = CIFSSEC_MUST_NTLMV2;
- else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM)
- *flags = CIFSSEC_MUST_NTLM;
- else if (CIFSSEC_MUST_LANMAN &&
- (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN)
- *flags = CIFSSEC_MUST_LANMAN;
- else if (CIFSSEC_MUST_PLNTXT &&
- (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT)
- *flags = CIFSSEC_MUST_PLNTXT;
- *flags |= signflags;
- }
- static ssize_t cifs_security_flags_proc_write(struct file *file,
- const char __user *buffer, size_t count, loff_t *ppos)
- {
- int rc;
- unsigned int flags;
- char flags_string[12];
- bool bv;
- if ((count < 1) || (count > 11))
- return -EINVAL;
- memset(flags_string, 0, 12);
- if (copy_from_user(flags_string, buffer, count))
- return -EFAULT;
- if (count < 3) {
- /* single char or single char followed by null */
- if (strtobool(flags_string, &bv) == 0) {
- global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
- return count;
- } else if (!isdigit(flags_string[0])) {
- cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
- flags_string);
- return -EINVAL;
- }
- }
- /* else we have a number */
- rc = kstrtouint(flags_string, 0, &flags);
- if (rc) {
- cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
- flags_string);
- return rc;
- }
- cifs_dbg(FYI, "sec flags 0x%x\n", flags);
- if (flags == 0) {
- cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
- return -EINVAL;
- }
- if (flags & ~CIFSSEC_MASK) {
- cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
- flags & ~CIFSSEC_MASK);
- return -EINVAL;
- }
- cifs_security_flags_handle_must_flags(&flags);
- /* flags look ok - update the global security flags for cifs module */
- global_secflags = flags;
- if (global_secflags & CIFSSEC_MUST_SIGN) {
- /* requiring signing implies signing is allowed */
- global_secflags |= CIFSSEC_MAY_SIGN;
- cifs_dbg(FYI, "packet signing now required\n");
- } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
- cifs_dbg(FYI, "packet signing disabled\n");
- }
- /* BB should we turn on MAY flags for other MUST options? */
- return count;
- }
- static const struct file_operations cifs_security_flags_proc_fops = {
- .open = cifs_security_flags_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifs_security_flags_proc_write,
- };
- #else
- inline void cifs_proc_init(void)
- {
- }
- inline void cifs_proc_clean(void)
- {
- }
- #endif /* PROC_FS */
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