/* * 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 <asm/uaccess.h> #include "cifspdu.h" #include "cifsglob.h" #include "cifsproto.h" #include "cifs_debug.h" #include "cifsfs.h" void cifs_dump_mem(char *label, void *data, int length) { int i, j; int *intptr = data; char *charptr = data; char buf[10], line[80]; printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n", label, length, data); for (i = 0; i < length; i += 16) { line[0] = 0; for (j = 0; (j < 4) && (i + j * 4 < length); j++) { sprintf(buf, " %08x", intptr[i / 4 + j]); strcat(line, buf); } buf[0] = ' '; buf[2] = 0; for (j = 0; (j < 16) && (i + j < length); j++) { buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.'; strcat(line, buf); } printk(KERN_DEBUG "%s\n", line); } } #ifdef CONFIG_CIFS_DEBUG2 void cifs_dump_detail(struct smb_hdr *smb) { cERROR(1, ("Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d", smb->Command, smb->Status.CifsError, smb->Flags, smb->Flags2, smb->Mid, smb->Pid)); cERROR(1, ("smb buf %p len %d", smb, smbCalcSize_LE(smb))); } void cifs_dump_mids(struct TCP_Server_Info *server) { struct list_head *tmp; struct mid_q_entry *mid_entry; if (server == NULL) return; cERROR(1, ("Dump pending requests:")); spin_lock(&GlobalMid_Lock); list_for_each(tmp, &server->pending_mid_q) { mid_entry = list_entry(tmp, struct mid_q_entry, qhead); cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d", mid_entry->midState, (int)mid_entry->command, mid_entry->pid, mid_entry->tsk, mid_entry->mid)); #ifdef CONFIG_CIFS_STATS2 cERROR(1, ("IsLarge: %d buf: %p time rcv: %ld now: %ld", mid_entry->largeBuf, mid_entry->resp_buf, mid_entry->when_received, jiffies)); #endif /* STATS2 */ cERROR(1, ("IsMult: %d IsEnd: %d", mid_entry->multiRsp, mid_entry->multiEnd)); if (mid_entry->resp_buf) { cifs_dump_detail(mid_entry->resp_buf); cifs_dump_mem("existing buf: ", mid_entry->resp_buf, 62); } } spin_unlock(&GlobalMid_Lock); } #endif /* CONFIG_CIFS_DEBUG2 */ #ifdef CONFIG_PROC_FS 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 cifsSesInfo *ses; struct cifsTconInfo *tcon; int i, j; __u32 dev_type; seq_puts(m, "Display Internal CIFS Data Structures for Debugging\n" "---------------------------------------------------\n"); seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); seq_printf(m, "Servers:"); i = 0; read_lock(&cifs_tcp_ses_lock); list_for_each(tmp1, &cifs_tcp_ses_list) { server = list_entry(tmp1, struct TCP_Server_Info, tcp_ses_list); i++; list_for_each(tmp2, &server->smb_ses_list) { ses = list_entry(tmp2, struct cifsSesInfo, smb_ses_list); if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) || (ses->serverNOS == NULL)) { seq_printf(m, "\n%d) entry for %s not fully " "displayed\n\t", i, ses->serverName); } 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); } 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->secMode, atomic_read(&server->inFlight)); #ifdef CONFIG_CIFS_STATS2 seq_printf(m, " In Send: %d In MaxReq Wait: %d", atomic_read(&server->inSend), atomic_read(&server->num_waiters)); #endif seq_puts(m, "\n\tShares:"); j = 0; list_for_each(tmp3, &ses->tcon_list) { tcon = list_entry(tmp3, struct cifsTconInfo, tcon_list); ++j; dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); seq_printf(m, "\n\t%d) %s Mounts: %d ", j, tcon->treeName, tcon->tc_count); if (tcon->nativeFileSystem) { seq_printf(m, "Type: %s ", tcon->nativeFileSystem); } seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x" "\nPathComponentMax: %d Status: 0x%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->need_reconnect) seq_puts(m, "\tDISCONNECTED "); seq_putc(m, '\n'); } 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 tsk: %p mid %d\n", mid_entry->midState, (int)mid_entry->command, mid_entry->pid, mid_entry->tsk, mid_entry->mid); } spin_unlock(&GlobalMid_Lock); } } read_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 int cifs_debug_data_proc_open(struct inode *inode, struct file *file) { return single_open(file, cifs_debug_data_proc_show, NULL); } static const struct file_operations cifs_debug_data_proc_fops = { .owner = THIS_MODULE, .open = cifs_debug_data_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; #ifdef CONFIG_CIFS_STATS static ssize_t cifs_stats_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { char c; int rc; struct list_head *tmp1, *tmp2, *tmp3; struct TCP_Server_Info *server; struct cifsSesInfo *ses; struct cifsTconInfo *tcon; rc = get_user(c, buffer); if (rc) return rc; if (c == '1' || c == 'y' || c == 'Y' || c == '0') { #ifdef CONFIG_CIFS_STATS2 atomic_set(&totBufAllocCount, 0); atomic_set(&totSmBufAllocCount, 0); #endif /* CONFIG_CIFS_STATS2 */ read_lock(&cifs_tcp_ses_lock); list_for_each(tmp1, &cifs_tcp_ses_list) { server = list_entry(tmp1, struct TCP_Server_Info, tcp_ses_list); list_for_each(tmp2, &server->smb_ses_list) { ses = list_entry(tmp2, struct cifsSesInfo, smb_ses_list); list_for_each(tmp3, &ses->tcon_list) { tcon = list_entry(tmp3, struct cifsTconInfo, tcon_list); atomic_set(&tcon->num_smbs_sent, 0); atomic_set(&tcon->num_writes, 0); atomic_set(&tcon->num_reads, 0); atomic_set(&tcon->num_oplock_brks, 0); atomic_set(&tcon->num_opens, 0); atomic_set(&tcon->num_closes, 0); atomic_set(&tcon->num_deletes, 0); atomic_set(&tcon->num_mkdirs, 0); atomic_set(&tcon->num_rmdirs, 0); atomic_set(&tcon->num_renames, 0); atomic_set(&tcon->num_t2renames, 0); atomic_set(&tcon->num_ffirst, 0); atomic_set(&tcon->num_fnext, 0); atomic_set(&tcon->num_fclose, 0); atomic_set(&tcon->num_hardlinks, 0); atomic_set(&tcon->num_symlinks, 0); atomic_set(&tcon->num_locks, 0); } } } read_unlock(&cifs_tcp_ses_lock); } return count; } static int cifs_stats_proc_show(struct seq_file *m, void *v) { int i; struct list_head *tmp1, *tmp2, *tmp3; struct TCP_Server_Info *server; struct cifsSesInfo *ses; struct cifsTconInfo *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", midCount.counter); 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; read_lock(&cifs_tcp_ses_lock); list_for_each(tmp1, &cifs_tcp_ses_list) { server = list_entry(tmp1, struct TCP_Server_Info, tcp_ses_list); list_for_each(tmp2, &server->smb_ses_list) { ses = list_entry(tmp2, struct cifsSesInfo, smb_ses_list); list_for_each(tmp3, &ses->tcon_list) { tcon = list_entry(tmp3, struct cifsTconInfo, 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 Oplock Breaks: %d", atomic_read(&tcon->num_smbs_sent), atomic_read(&tcon->num_oplock_brks)); seq_printf(m, "\nReads: %d Bytes: %lld", atomic_read(&tcon->num_reads), (long long)(tcon->bytes_read)); seq_printf(m, "\nWrites: %d Bytes: %lld", atomic_read(&tcon->num_writes), (long long)(tcon->bytes_written)); seq_printf(m, "\nLocks: %d HardLinks: %d " "Symlinks: %d", atomic_read(&tcon->num_locks), atomic_read(&tcon->num_hardlinks), atomic_read(&tcon->num_symlinks)); seq_printf(m, "\nOpens: %d Closes: %d" "Deletes: %d", atomic_read(&tcon->num_opens), atomic_read(&tcon->num_closes), atomic_read(&tcon->num_deletes)); seq_printf(m, "\nMkdirs: %d Rmdirs: %d", atomic_read(&tcon->num_mkdirs), atomic_read(&tcon->num_rmdirs)); seq_printf(m, "\nRenames: %d T2 Renames %d", atomic_read(&tcon->num_renames), atomic_read(&tcon->num_t2renames)); seq_printf(m, "\nFindFirst: %d FNext %d " "FClose %d", atomic_read(&tcon->num_ffirst), atomic_read(&tcon->num_fnext), atomic_read(&tcon->num_fclose)); } } } read_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 = { .owner = THIS_MODULE, .open = cifs_stats_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, .write = cifs_stats_proc_write, }; #endif /* STATS */ static struct proc_dir_entry *proc_fs_cifs; static const struct file_operations cifsFYI_proc_fops; static const struct file_operations cifs_oplock_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_multiuser_mount_proc_fops; static const struct file_operations cifs_security_flags_proc_fops; static const struct file_operations cifs_experimental_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_fs_cifs->owner = THIS_MODULE; proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops); #ifdef CONFIG_CIFS_STATS proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops); #endif /* STATS */ proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops); proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops); proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops); proc_create("Experimental", 0, proc_fs_cifs, &cifs_experimental_proc_fops); proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs, &cifs_linux_ext_proc_fops); proc_create("MultiuserMount", 0, proc_fs_cifs, &cifs_multiuser_mount_proc_fops); proc_create("SecurityFlags", 0, proc_fs_cifs, &cifs_security_flags_proc_fops); proc_create("LookupCacheEnabled", 0, proc_fs_cifs, &cifs_lookup_cache_proc_fops); } void cifs_proc_clean(void) { if (proc_fs_cifs == NULL) return; remove_proc_entry("DebugData", proc_fs_cifs); remove_proc_entry("cifsFYI", proc_fs_cifs); remove_proc_entry("traceSMB", proc_fs_cifs); #ifdef CONFIG_CIFS_STATS remove_proc_entry("Stats", proc_fs_cifs); #endif remove_proc_entry("MultiuserMount", proc_fs_cifs); remove_proc_entry("OplockEnabled", proc_fs_cifs); remove_proc_entry("SecurityFlags", proc_fs_cifs); remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); remove_proc_entry("Experimental", proc_fs_cifs); remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); remove_proc_entry("fs/cifs", NULL); } static int cifsFYI_proc_show(struct seq_file *m, void *v) { seq_printf(m, "%d\n", cifsFYI); return 0; } static int cifsFYI_proc_open(struct inode *inode, struct file *file) { return single_open(file, cifsFYI_proc_show, NULL); } static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { char c; int rc; rc = get_user(c, buffer); if (rc) return rc; if (c == '0' || c == 'n' || c == 'N') cifsFYI = 0; else if (c == '1' || c == 'y' || c == 'Y') cifsFYI = 1; else if ((c > '1') && (c <= '9')) cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */ return count; } static const struct file_operations cifsFYI_proc_fops = { .owner = THIS_MODULE, .open = cifsFYI_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, .write = cifsFYI_proc_write, }; static int cifs_oplock_proc_show(struct seq_file *m, void *v) { seq_printf(m, "%d\n", oplockEnabled); return 0; } static int cifs_oplock_proc_open(struct inode *inode, struct file *file) { return single_open(file, cifs_oplock_proc_show, NULL); } static ssize_t cifs_oplock_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { char c; int rc; rc = get_user(c, buffer); if (rc) return rc; if (c == '0' || c == 'n' || c == 'N') oplockEnabled = 0; else if (c == '1' || c == 'y' || c == 'Y') oplockEnabled = 1; return count; } static const struct file_operations cifs_oplock_proc_fops = { .owner = THIS_MODULE, .open = cifs_oplock_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, .write = cifs_oplock_proc_write, }; static int cifs_experimental_proc_show(struct seq_file *m, void *v) { seq_printf(m, "%d\n", experimEnabled); return 0; } static int cifs_experimental_proc_open(struct inode *inode, struct file *file) { return single_open(file, cifs_experimental_proc_show, NULL); } static ssize_t cifs_experimental_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { char c; int rc; rc = get_user(c, buffer); if (rc) return rc; if (c == '0' || c == 'n' || c == 'N') experimEnabled = 0; else if (c == '1' || c == 'y' || c == 'Y') experimEnabled = 1; else if (c == '2') experimEnabled = 2; return count; } static const struct file_operations cifs_experimental_proc_fops = { .owner = THIS_MODULE, .open = cifs_experimental_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, .write = cifs_experimental_proc_write, }; static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) { seq_printf(m, "%d\n", linuxExtEnabled); return 0; } static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) { return single_open(file, cifs_linux_ext_proc_show, NULL); } static ssize_t cifs_linux_ext_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { char c; int rc; rc = get_user(c, buffer); if (rc) return rc; if (c == '0' || c == 'n' || c == 'N') linuxExtEnabled = 0; else if (c == '1' || c == 'y' || c == 'Y') linuxExtEnabled = 1; return count; } static const struct file_operations cifs_linux_ext_proc_fops = { .owner = THIS_MODULE, .open = cifs_linux_ext_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, .write = cifs_linux_ext_proc_write, }; static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) { seq_printf(m, "%d\n", lookupCacheEnabled); return 0; } static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) { return single_open(file, cifs_lookup_cache_proc_show, NULL); } static ssize_t cifs_lookup_cache_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { char c; int rc; rc = get_user(c, buffer); if (rc) return rc; if (c == '0' || c == 'n' || c == 'N') lookupCacheEnabled = 0; else if (c == '1' || c == 'y' || c == 'Y') lookupCacheEnabled = 1; return count; } static const struct file_operations cifs_lookup_cache_proc_fops = { .owner = THIS_MODULE, .open = cifs_lookup_cache_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, .write = cifs_lookup_cache_proc_write, }; static int traceSMB_proc_show(struct seq_file *m, void *v) { seq_printf(m, "%d\n", traceSMB); return 0; } static int traceSMB_proc_open(struct inode *inode, struct file *file) { return single_open(file, traceSMB_proc_show, NULL); } static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { char c; int rc; rc = get_user(c, buffer); if (rc) return rc; if (c == '0' || c == 'n' || c == 'N') traceSMB = 0; else if (c == '1' || c == 'y' || c == 'Y') traceSMB = 1; return count; } static const struct file_operations traceSMB_proc_fops = { .owner = THIS_MODULE, .open = traceSMB_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, .write = traceSMB_proc_write, }; static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v) { seq_printf(m, "%d\n", multiuser_mount); return 0; } static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh) { return single_open(fh, cifs_multiuser_mount_proc_show, NULL); } static ssize_t cifs_multiuser_mount_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { char c; int rc; rc = get_user(c, buffer); if (rc) return rc; if (c == '0' || c == 'n' || c == 'N') multiuser_mount = 0; else if (c == '1' || c == 'y' || c == 'Y') multiuser_mount = 1; return count; } static const struct file_operations cifs_multiuser_mount_proc_fops = { .owner = THIS_MODULE, .open = cifs_multiuser_mount_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, .write = cifs_multiuser_mount_proc_write, }; static int cifs_security_flags_proc_show(struct seq_file *m, void *v) { seq_printf(m, "0x%x\n", extended_security); return 0; } static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) { return single_open(file, cifs_security_flags_proc_show, NULL); } static ssize_t cifs_security_flags_proc_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { unsigned int flags; char flags_string[12]; char c; if ((count < 1) || (count > 11)) return -EINVAL; memset(flags_string, 0, 12); if (copy_from_user(flags_string, buffer, count)) return -EFAULT; if (count < 3) { /* single char or single char followed by null */ c = flags_string[0]; if (c == '0' || c == 'n' || c == 'N') { extended_security = CIFSSEC_DEF; /* default */ return count; } else if (c == '1' || c == 'y' || c == 'Y') { extended_security = CIFSSEC_MAX; return count; } else if (!isdigit(c)) { cERROR(1, ("invalid flag %c", c)); return -EINVAL; } } /* else we have a number */ flags = simple_strtoul(flags_string, NULL, 0); cFYI(1, ("sec flags 0x%x", flags)); if (flags <= 0) { cERROR(1, ("invalid security flags %s", flags_string)); return -EINVAL; } if (flags & ~CIFSSEC_MASK) { cERROR(1, ("attempt to set unsupported security flags 0x%x", flags & ~CIFSSEC_MASK)); return -EINVAL; } /* flags look ok - update the global security flags for cifs module */ extended_security = flags; if (extended_security & CIFSSEC_MUST_SIGN) { /* requiring signing implies signing is allowed */ extended_security |= CIFSSEC_MAY_SIGN; cFYI(1, ("packet signing now required")); } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) { cFYI(1, ("packet signing disabled")); } /* BB should we turn on MAY flags for other MUST options? */ return count; } static const struct file_operations cifs_security_flags_proc_fops = { .owner = THIS_MODULE, .open = cifs_security_flags_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, .write = cifs_security_flags_proc_write, }; #else inline void cifs_proc_init(void) { } inline void cifs_proc_clean(void) { } #endif /* PROC_FS */