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Commit 4a267003 authored by Konstantin Baev's avatar Konstantin Baev
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update sources/2.6.27

- source: cifs-2.6.git - refspec: v2.6.27-etercifs - commit: 1827b7d4082cc5aef979a6d86c7cb96f9dee2c09 merge with new kernel minor version (v2.6.27.8)
parent d99211de
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Showing with 617 additions and 580 deletions
sources/2.6.27/cifs_debug.c
View file @ 4a267003
......@@ -107,12 +107,13 @@ void cifs_dump_mids(struct TCP_Server_Info *server)
#ifdef CONFIG_PROC_FS
static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
{
struct list_head *tmp;
struct list_head *tmp1;
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;
int i, j;
__u32 dev_type;
seq_puts(m,
"Display Internal CIFS Data Structures for Debugging\n"
......@@ -122,77 +123,55 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
seq_printf(m, "Servers:");
i = 0;
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalSMBSessionList) {
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++;
ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
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, "\nentry for %s not fully "
"displayed\n\t", ses->serverName);
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 Mounts: %d OS:"
" %s \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
"\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,
atomic_read(&ses->inUse),
ses->serverOS, ses->serverNOS,
ses->ses_count, ses->serverOS, ses->serverNOS,
ses->capabilities, ses->status);
}
if (ses->server) {
seq_printf(m, "TCP status: %d\n\tLocal Users To "
"Server: %d SecMode: 0x%x Req On Wire: %d",
ses->server->tcpStatus,
atomic_read(&ses->server->socketUseCount),
ses->server->secMode,
atomic_read(&ses->server->inFlight));
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(&ses->server->inSend),
atomic_read(&ses->server->num_waiters));
atomic_read(&server->inSend),
atomic_read(&server->num_waiters));
#endif
seq_puts(m, "\nMIDs:\n");
spin_lock(&GlobalMid_Lock);
list_for_each(tmp1, &ses->server->pending_mid_q) {
mid_entry = list_entry(tmp1, struct
mid_q_entry,
qhead);
seq_printf(m, "State: %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(&GlobalSMBSeslock);
seq_putc(m, '\n');
seq_puts(m, "Shares:");
i = 0;
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalTreeConnectionList) {
__u32 dev_type;
i++;
tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
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%d) %s Uses: %d ", i,
tcon->treeName, atomic_read(&tcon->useCount));
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: %d",
"\nPathComponentMax: %d Status: 0x%d",
le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
le32_to_cpu(tcon->fsAttrInfo.Attributes),
le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
......@@ -204,11 +183,29 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
else
seq_printf(m, " type: %d ", dev_type);
if (tcon->tidStatus == CifsNeedReconnect)
if (tcon->need_reconnect)
seq_puts(m, "\tDISCONNECTED ");
seq_putc(m, '\n');
}
read_unlock(&GlobalSMBSeslock);
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 */
......@@ -234,7 +231,9 @@ static ssize_t cifs_stats_proc_write(struct file *file,
{
char c;
int rc;
struct list_head *tmp;
struct list_head *tmp1, *tmp2, *tmp3;
struct TCP_Server_Info *server;
struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
rc = get_user(c, buffer);
......@@ -242,14 +241,21 @@ static ssize_t cifs_stats_proc_write(struct file *file,
return rc;
if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
read_lock(&GlobalSMBSeslock);
#ifdef CONFIG_CIFS_STATS2
atomic_set(&totBufAllocCount, 0);
atomic_set(&totSmBufAllocCount, 0);
#endif /* CONFIG_CIFS_STATS2 */
list_for_each(tmp, &GlobalTreeConnectionList) {
tcon = list_entry(tmp, struct cifsTconInfo,
cifsConnectionList);
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);
......@@ -268,7 +274,9 @@ static ssize_t cifs_stats_proc_write(struct file *file,
atomic_set(&tcon->num_symlinks, 0);
atomic_set(&tcon->num_locks, 0);
}
read_unlock(&GlobalSMBSeslock);
}
}
read_unlock(&cifs_tcp_ses_lock);
}
return count;
......@@ -277,7 +285,9 @@ static ssize_t cifs_stats_proc_write(struct file *file,
static int cifs_stats_proc_show(struct seq_file *m, void *v)
{
int i;
struct list_head *tmp;
struct list_head *tmp1, *tmp2, *tmp3;
struct TCP_Server_Info *server;
struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
seq_printf(m,
......@@ -306,12 +316,20 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
GlobalCurrentXid, GlobalMaxActiveXid);
i = 0;
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalTreeConnectionList) {
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++;
tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
seq_printf(m, "\n%d) %s", i, tcon->treeName);
if (tcon->tidStatus == CifsNeedReconnect)
if (tcon->need_reconnect)
seq_puts(m, "\tDISCONNECTED ");
seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
atomic_read(&tcon->num_smbs_sent),
......@@ -322,13 +340,13 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
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",
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",
seq_printf(m, "\nOpens: %d Closes: %d"
"Deletes: %d",
atomic_read(&tcon->num_opens),
atomic_read(&tcon->num_closes),
atomic_read(&tcon->num_deletes));
......@@ -338,12 +356,15 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
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",
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(&GlobalSMBSeslock);
}
}
read_unlock(&cifs_tcp_ses_lock);
seq_putc(m, '\n');
return 0;
......
sources/2.6.27/cifs_spnego.c
View file @ 4a267003
......@@ -70,7 +70,8 @@ struct key_type cifs_spnego_key_type = {
strlen("ver=0xFF") */
#define MAX_MECH_STR_LEN 13 /* length of longest security mechanism name, eg
in future could have strlen(";sec=ntlmsspi") */
#define MAX_IPV6_ADDR_LEN 42 /* eg FEDC:BA98:7654:3210:FEDC:BA98:7654:3210/60 */
/* max possible addr len eg FEDC:BA98:7654:3210:FEDC:BA98:7654:3210/128 */
#define MAX_IPV6_ADDR_LEN 43
/* get a key struct with a SPNEGO security blob, suitable for session setup */
struct key *
cifs_get_spnego_key(struct cifsSesInfo *sesInfo)
......
sources/2.6.27/cifsfs.c
View file @ 4a267003
......@@ -510,10 +510,11 @@ static void cifs_umount_begin(struct super_block *sb)
tcon = cifs_sb->tcon;
if (tcon == NULL)
return;
down(&tcon->tconSem);
if (atomic_read(&tcon->useCount) == 1)
read_lock(&cifs_tcp_ses_lock);
if (tcon->tc_count == 1)
tcon->tidStatus = CifsExiting;
up(&tcon->tconSem);
read_unlock(&cifs_tcp_ses_lock);
/* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */
/* cancel_notify_requests(tcon); */
......@@ -980,11 +981,10 @@ static int cifs_oplock_thread(void *dummyarg)
not bother sending an oplock release if session
to server still is disconnected since oplock
already released by the server in that case */
if (pTcon->tidStatus != CifsNeedReconnect) {
if (!pTcon->need_reconnect) {
/* PV: disable caching if oplock missed */
CIFS_I(inode)->clientCanCacheRead = false;
CIFS_I(inode)->clientCanCacheAll = false;
rc = CIFSSMBLock(0, pTcon, netfid,
0 /* len */ , 0 /* offset */, 0,
0, LOCKING_ANDX_OPLOCK_RELEASE,
......@@ -1002,24 +1002,24 @@ static int cifs_oplock_thread(void *dummyarg)
static int cifs_dnotify_thread(void *dummyarg)
{
struct list_head *tmp;
struct cifsSesInfo *ses;
struct TCP_Server_Info *server;
do {
if (try_to_freeze())
continue;
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(15*HZ);
read_lock(&GlobalSMBSeslock);
/* check if any stuck requests that need
to be woken up and wakeq so the
thread can wake up and error out */
list_for_each(tmp, &GlobalSMBSessionList) {
ses = list_entry(tmp, struct cifsSesInfo,
cifsSessionList);
if (ses->server && atomic_read(&ses->server->inFlight))
wake_up_all(&ses->server->response_q);
read_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &cifs_tcp_ses_list) {
server = list_entry(tmp, struct TCP_Server_Info,
tcp_ses_list);
if (atomic_read(&server->inFlight))
wake_up_all(&server->response_q);
}
read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock);
} while (!kthread_should_stop());
return 0;
......@@ -1030,9 +1030,7 @@ init_cifs(void)
{
int rc = 0;
cifs_proc_init();
/* INIT_LIST_HEAD(&GlobalServerList);*/ /* BB not implemented yet */
INIT_LIST_HEAD(&GlobalSMBSessionList);
INIT_LIST_HEAD(&GlobalTreeConnectionList);
INIT_LIST_HEAD(&cifs_tcp_ses_list);
INIT_LIST_HEAD(&GlobalOplock_Q);
#ifdef CONFIG_CIFS_EXPERIMENTAL
INIT_LIST_HEAD(&GlobalDnotifyReqList);
......@@ -1060,6 +1058,7 @@ init_cifs(void)
GlobalMaxActiveXid = 0;
memset(Local_System_Name, 0, 15);
rwlock_init(&GlobalSMBSeslock);
rwlock_init(&cifs_tcp_ses_lock);
spin_lock_init(&GlobalMid_Lock);
if (cifs_max_pending < 2) {
......
sources/2.6.27/cifsglob.h
View file @ 4a267003
......@@ -85,8 +85,7 @@ enum securityEnum {
};
enum protocolEnum {
IPV4 = 0,
IPV6,
TCP = 0,
SCTP
/* Netbios frames protocol not supported at this time */
};
......@@ -122,6 +121,9 @@ struct cifs_cred {
*/
struct TCP_Server_Info {
struct list_head tcp_ses_list;
struct list_head smb_ses_list;
int srv_count; /* reference counter */
/* 15 character server name + 0x20 16th byte indicating type = srv */
char server_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];
char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2];
......@@ -141,7 +143,8 @@ struct TCP_Server_Info {
char versionMajor;
char versionMinor;
bool svlocal:1; /* local server or remote */
atomic_t socketUseCount; /* number of open cifs sessions on socket */
bool noblocksnd; /* use blocking sendmsg */
bool noautotune; /* do not autotune send buf sizes */
atomic_t inFlight; /* number of requests on the wire to server */
#ifdef CONFIG_CIFS_STATS2
atomic_t inSend; /* requests trying to send */
......@@ -192,13 +195,14 @@ struct cifsUidInfo {
* Session structure. One of these for each uid session with a particular host
*/
struct cifsSesInfo {
struct list_head cifsSessionList;
struct list_head smb_ses_list;
struct list_head tcon_list;
struct semaphore sesSem;
#if 0
struct cifsUidInfo *uidInfo; /* pointer to user info */
#endif
struct TCP_Server_Info *server; /* pointer to server info */
atomic_t inUse; /* # of mounts (tree connections) on this ses */
int ses_count; /* reference counter */
enum statusEnum status;
unsigned overrideSecFlg; /* if non-zero override global sec flags */
__u16 ipc_tid; /* special tid for connection to IPC share */
......@@ -214,6 +218,7 @@ struct cifsSesInfo {
char userName[MAX_USERNAME_SIZE + 1];
char *domainName;
char *password;
bool need_reconnect:1; /* connection reset, uid now invalid */
};
/* no more than one of the following three session flags may be set */
#define CIFS_SES_NT4 1
......@@ -228,16 +233,15 @@ struct cifsSesInfo {
* session
*/
struct cifsTconInfo {
struct list_head cifsConnectionList;
struct list_head tcon_list;
int tc_count;
struct list_head openFileList;
struct semaphore tconSem;
struct cifsSesInfo *ses; /* pointer to session associated with */
char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
char *nativeFileSystem;
__u16 tid; /* The 2 byte tree id */
__u16 Flags; /* optional support bits */
enum statusEnum tidStatus;
atomic_t useCount; /* how many explicit/implicit mounts to share */
#ifdef CONFIG_CIFS_STATS
atomic_t num_smbs_sent;
atomic_t num_writes;
......@@ -285,6 +289,7 @@ struct cifsTconInfo {
bool seal:1; /* transport encryption for this mounted share */
bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol
for this mount even if server would support */
bool need_reconnect:1; /* connection reset, tid now invalid */
/* BB add field for back pointer to sb struct(s)? */
};
......@@ -585,21 +590,21 @@ require use of the stronger protocol */
#endif
/*
* The list of servers that did not respond with NT LM 0.12.
* This list helps improve performance and eliminate the messages indicating
* that we had a communications error talking to the server in this list.
* the list of TCP_Server_Info structures, ie each of the sockets
* connecting our client to a distinct server (ip address), is
* chained together by cifs_tcp_ses_list. The list of all our SMB
* sessions (and from that the tree connections) can be found
* by iterating over cifs_tcp_ses_list
*/
/* Feature not supported */
/* GLOBAL_EXTERN struct servers_not_supported *NotSuppList; */
GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
/*
* The following is a hash table of all the users we know about.
* This lock protects the cifs_tcp_ses_list, the list of smb sessions per
* tcp session, and the list of tcon's per smb session. It also protects
* the reference counters for the server, smb session, and tcon. Finally,
* changes to the tcon->tidStatus should be done while holding this lock.
*/
GLOBAL_EXTERN struct smbUidInfo *GlobalUidList[UID_HASH];
/* GLOBAL_EXTERN struct list_head GlobalServerList; BB not implemented yet */
GLOBAL_EXTERN struct list_head GlobalSMBSessionList;
GLOBAL_EXTERN struct list_head GlobalTreeConnectionList;
GLOBAL_EXTERN rwlock_t cifs_tcp_ses_lock;
GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; /* protects list inserts on 3 above */
GLOBAL_EXTERN struct list_head GlobalOplock_Q;
......
sources/2.6.27/cifsproto.h
View file @ 4a267003
......@@ -36,7 +36,7 @@ extern void cifs_buf_release(void *);
extern struct smb_hdr *cifs_small_buf_get(void);
extern void cifs_small_buf_release(void *);
extern int smb_send(struct socket *, struct smb_hdr *,
unsigned int /* length */ , struct sockaddr *);
unsigned int /* length */ , struct sockaddr *, bool);
extern unsigned int _GetXid(void);
extern void _FreeXid(unsigned int);
#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current->fsuid));
......
sources/2.6.27/cifssmb.c
View file @ 4a267003
......@@ -190,10 +190,10 @@ small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
/* need to prevent multiple threads trying to
simultaneously reconnect the same SMB session */
down(&tcon->ses->sesSem);
if (tcon->ses->status == CifsNeedReconnect)
if (tcon->ses->need_reconnect)
rc = cifs_setup_session(0, tcon->ses,
nls_codepage);
if (!rc && (tcon->tidStatus == CifsNeedReconnect)) {
if (!rc && (tcon->need_reconnect)) {
mark_open_files_invalid(tcon);
rc = CIFSTCon(0, tcon->ses, tcon->treeName,
tcon, nls_codepage);
......@@ -337,10 +337,10 @@ smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
/* need to prevent multiple threads trying to
simultaneously reconnect the same SMB session */
down(&tcon->ses->sesSem);
if (tcon->ses->status == CifsNeedReconnect)
if (tcon->ses->need_reconnect)
rc = cifs_setup_session(0, tcon->ses,
nls_codepage);
if (!rc && (tcon->tidStatus == CifsNeedReconnect)) {
if (!rc && (tcon->need_reconnect)) {
mark_open_files_invalid(tcon);
rc = CIFSTCon(0, tcon->ses, tcon->treeName,
tcon, nls_codepage);
......@@ -664,8 +664,9 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
rc = -EIO;
goto neg_err_exit;
}
if (server->socketUseCount.counter > 1) {
read_lock(&cifs_tcp_ses_lock);
if (server->srv_count > 1) {
read_unlock(&cifs_tcp_ses_lock);
if (memcmp(server->server_GUID,
pSMBr->u.extended_response.
GUID, 16) != 0) {
......@@ -674,9 +675,11 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
pSMBr->u.extended_response.GUID,
16);
}
} else
} else {
read_unlock(&cifs_tcp_ses_lock);
memcpy(server->server_GUID,
pSMBr->u.extended_response.GUID, 16);
}
if (count == 16) {
server->secType = RawNTLMSSP;
......@@ -739,48 +742,29 @@ CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
int rc = 0;
cFYI(1, ("In tree disconnect"));
/*
* If last user of the connection and
* connection alive - disconnect it
* If this is the last connection on the server session disconnect it
* (and inside session disconnect we should check if tcp socket needs
* to be freed and kernel thread woken up).
*/
if (tcon)
down(&tcon->tconSem);
else
return -EIO;
atomic_dec(&tcon->useCount);
if (atomic_read(&tcon->useCount) > 0) {
up(&tcon->tconSem);
return -EBUSY;
}
/* BB: do we need to check this? These should never be NULL. */
if ((tcon->ses == NULL) || (tcon->ses->server == NULL))
return -EIO;
/* No need to return error on this operation if tid invalidated and
closed on server already e.g. due to tcp session crashing */
if (tcon->tidStatus == CifsNeedReconnect) {
up(&tcon->tconSem);
/*
* No need to return error on this operation if tid invalidated and
* closed on server already e.g. due to tcp session crashing. Also,
* the tcon is no longer on the list, so no need to take lock before
* checking this.
*/
if (tcon->need_reconnect)
return 0;
}
if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) {
up(&tcon->tconSem);
return -EIO;
}
rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
(void **)&smb_buffer);
if (rc) {
up(&tcon->tconSem);
if (rc)
return rc;
}
rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0);
if (rc)
cFYI(1, ("Tree disconnect failed %d", rc));
up(&tcon->tconSem);
/* No need to return error on this operation if tid invalidated and
closed on server already e.g. due to tcp session crashing */
if (rc == -EAGAIN)
......@@ -796,43 +780,36 @@ CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
int rc = 0;
cFYI(1, ("In SMBLogoff for session disconnect"));
if (ses)
down(&ses->sesSem);
else
/*
* BB: do we need to check validity of ses and server? They should
* always be valid since we have an active reference. If not, that
* should probably be a BUG()
*/
if (!ses || !ses->server)
return -EIO;
atomic_dec(&ses->inUse);
if (atomic_read(&ses->inUse) > 0) {
up(&ses->sesSem);
return -EBUSY;
}
down(&ses->sesSem);
if (ses->need_reconnect)
goto session_already_dead; /* no need to send SMBlogoff if uid
already closed due to reconnect */
rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
if (rc) {
up(&ses->sesSem);
return rc;
}
if (ses->server) {
pSMB->hdr.Mid = GetNextMid(ses->server);
if (ses->server->secMode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
}
pSMB->hdr.Uid = ses->Suid;
pSMB->AndXCommand = 0xFF;
rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0);
if (ses->server) {
atomic_dec(&ses->server->socketUseCount);
if (atomic_read(&ses->server->socketUseCount) == 0) {
spin_lock(&GlobalMid_Lock);
ses->server->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
rc = -ESHUTDOWN;
}
}
session_already_dead:
up(&ses->sesSem);
/* if session dead then we do not need to do ulogoff,
......@@ -1539,7 +1516,7 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
__u32 bytes_sent;
__u16 byte_count;
/* cFYI(1,("write at %lld %d bytes",offset,count));*/
/* cFYI(1, ("write at %lld %d bytes",offset,count));*/
if (tcon->ses == NULL)
return -ECONNABORTED;
......
sources/2.6.27/connect.c
View file @ 4a267003
......@@ -90,6 +90,8 @@ struct smb_vol {
bool nocase:1; /* request case insensitive filenames */
bool nobrl:1; /* disable sending byte range locks to srv */
bool seal:1; /* request transport encryption on share */
bool noblocksnd:1;
bool noautotune:1;
unsigned int rsize;
unsigned int wsize;
unsigned int sockopt;
......@@ -100,9 +102,11 @@ struct smb_vol {
static int ipv4_connect(struct sockaddr_in *psin_server,
struct socket **csocket,
char *netb_name,
char *server_netb_name);
char *server_netb_name,
bool noblocksnd,
bool nosndbuf); /* ipv6 never set sndbuf size */
static int ipv6_connect(struct sockaddr_in6 *psin_server,
struct socket **csocket);
struct socket **csocket, bool noblocksnd);
/*
......@@ -118,7 +122,7 @@ static int
cifs_reconnect(struct TCP_Server_Info *server)
{
int rc = 0;
struct list_head *tmp;
struct list_head *tmp, *tmp2;
struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
struct mid_q_entry *mid_entry;
......@@ -138,23 +142,17 @@ cifs_reconnect(struct TCP_Server_Info *server)
/* before reconnecting the tcp session, mark the smb session (uid)
and the tid bad so they are not used until reconnected */
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalSMBSessionList) {
ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
if (ses->server) {
if (ses->server == server) {
ses->status = CifsNeedReconnect;
read_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &server->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
ses->need_reconnect = true;
ses->ipc_tid = 0;
list_for_each(tmp2, &ses->tcon_list) {
tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list);
tcon->need_reconnect = true;
}
}
/* else tcp and smb sessions need reconnection */
}
list_for_each(tmp, &GlobalTreeConnectionList) {
tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
if ((tcon->ses) && (tcon->ses->server == server))
tcon->tidStatus = CifsNeedReconnect;
}
read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock);
/* do not want to be sending data on a socket we are freeing */
down(&server->tcpSem);
if (server->ssocket) {
......@@ -186,14 +184,15 @@ cifs_reconnect(struct TCP_Server_Info *server)
while ((!kthread_should_stop()) && (server->tcpStatus != CifsGood)) {
try_to_freeze();
if (server->protocolType == IPV6) {
if (server->addr.sockAddr6.sin6_family == AF_INET6) {
rc = ipv6_connect(&server->addr.sockAddr6,
&server->ssocket);
&server->ssocket, server->noautotune);
} else {
rc = ipv4_connect(&server->addr.sockAddr,
&server->ssocket,
server->workstation_RFC1001_name,
server->server_RFC1001_name);
server->server_RFC1001_name,
server->noblocksnd, server->noautotune);
}
if (rc) {
cFYI(1, ("reconnect error %d", rc));
......@@ -409,8 +408,14 @@ incomplete_rcv:
msleep(1); /* minimum sleep to prevent looping
allowing socket to clear and app threads to set
tcpStatus CifsNeedReconnect if server hung */
if (pdu_length < 4)
if (pdu_length < 4) {
iov.iov_base = (4 - pdu_length) +
(char *)smb_buffer;
iov.iov_len = pdu_length;
smb_msg.msg_control = NULL;
smb_msg.msg_controllen = 0;
goto incomplete_rcv;
}
else
continue;
} else if (length <= 0) {
......@@ -646,6 +651,11 @@ multi_t2_fnd:
}
} /* end while !EXITING */
/* take it off the list, if it's not already */
write_lock(&cifs_tcp_ses_lock);
list_del_init(&server->tcp_ses_list);
write_unlock(&cifs_tcp_ses_lock);
spin_lock(&GlobalMid_Lock);
server->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
......@@ -686,28 +696,28 @@ multi_t2_fnd:
if (smallbuf) /* no sense logging a debug message if NULL */
cifs_small_buf_release(smallbuf);
read_lock(&GlobalSMBSeslock);
/*
* BB: we shouldn't have to do any of this. It shouldn't be
* possible to exit from the thread with active SMB sessions
*/
read_lock(&cifs_tcp_ses_lock);
if (list_empty(&server->pending_mid_q)) {
/* loop through server session structures attached to this and
mark them dead */
list_for_each(tmp, &GlobalSMBSessionList) {
ses =
list_entry(tmp, struct cifsSesInfo,
cifsSessionList);
if (ses->server == server) {
list_for_each(tmp, &server->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo,
smb_ses_list);
ses->status = CifsExiting;
ses->server = NULL;
}
}
read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock);
} else {
/* although we can not zero the server struct pointer yet,
since there are active requests which may depnd on them,
mark the corresponding SMB sessions as exiting too */
list_for_each(tmp, &GlobalSMBSessionList) {
list_for_each(tmp, &server->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo,
cifsSessionList);
if (ses->server == server)
smb_ses_list);
ses->status = CifsExiting;
}
......@@ -723,7 +733,7 @@ multi_t2_fnd:
}
}
spin_unlock(&GlobalMid_Lock);
read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock);
/* 1/8th of sec is more than enough time for them to exit */
msleep(125);
}
......@@ -745,14 +755,13 @@ multi_t2_fnd:
if there are any pointing to this (e.g
if a crazy root user tried to kill cifsd
kernel thread explicitly this might happen) */
write_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalSMBSessionList) {
ses = list_entry(tmp, struct cifsSesInfo,
cifsSessionList);
if (ses->server == server)
/* BB: This shouldn't be necessary, see above */
read_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &server->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
ses->server = NULL;
}
write_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock);
kfree(server->hostname);
kfree(server);
......@@ -1186,6 +1195,10 @@ cifs_parse_mount_options(char *options, const char *devname,
/* ignore */
} else if (strnicmp(data, "rw", 2) == 0) {
vol->rw = true;
} else if (strnicmp(data, "noblocksnd", 11) == 0) {
vol->noblocksnd = true;
} else if (strnicmp(data, "noautotune", 10) == 0) {
vol->noautotune = true;
} else if ((strnicmp(data, "suid", 4) == 0) ||
(strnicmp(data, "nosuid", 6) == 0) ||
(strnicmp(data, "exec", 4) == 0) ||
......@@ -1331,94 +1344,158 @@ cifs_parse_mount_options(char *options, const char *devname,
return 0;
}
static struct cifsSesInfo *
cifs_find_tcp_session(struct in_addr *target_ip_addr,
struct in6_addr *target_ip6_addr,
char *userName, struct TCP_Server_Info **psrvTcp)
static struct TCP_Server_Info *
cifs_find_tcp_session(struct sockaddr *addr)
{
struct list_head *tmp;
struct cifsSesInfo *ses;
*psrvTcp = NULL;
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalSMBSessionList) {
ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
if (!ses->server)
struct TCP_Server_Info *server;
struct sockaddr_in *addr4 = (struct sockaddr_in *) addr;
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr;
write_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &cifs_tcp_ses_list) {
server = list_entry(tmp, struct TCP_Server_Info,
tcp_ses_list);
/*
* the demux thread can exit on its own while still in CifsNew
* so don't accept any sockets in that state. Since the
* tcpStatus never changes back to CifsNew it's safe to check
* for this without a lock.
*/
if (server->tcpStatus == CifsNew)
continue;
if (target_ip_addr &&
ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr)
if (addr->sa_family == AF_INET &&
(addr4->sin_addr.s_addr !=
server->addr.sockAddr.sin_addr.s_addr))
continue;
else if (target_ip6_addr &&
memcmp(&ses->server->addr.sockAddr6.sin6_addr,
target_ip6_addr, sizeof(*target_ip6_addr)))
else if (addr->sa_family == AF_INET6 &&
memcmp(&server->addr.sockAddr6.sin6_addr,
&addr6->sin6_addr, sizeof(addr6->sin6_addr)))
continue;
/* BB lock server and tcp session; increment use count here?? */
/* found a match on the TCP session */
*psrvTcp = ses->server;
/* BB check if reconnection needed */
if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) {
read_unlock(&GlobalSMBSeslock);
/* Found exact match on both TCP and
SMB sessions */
return ses;
++server->srv_count;
write_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("Existing tcp session with server found"));
return server;
}
/* else tcp and smb sessions need reconnection */
write_unlock(&cifs_tcp_ses_lock);
return NULL;
}
static void
cifs_put_tcp_session(struct TCP_Server_Info *server)
{
struct task_struct *task;
write_lock(&cifs_tcp_ses_lock);
if (--server->srv_count > 0) {
write_unlock(&cifs_tcp_ses_lock);
return;
}
read_unlock(&GlobalSMBSeslock);
return NULL;
list_del_init(&server->tcp_ses_list);
write_unlock(&cifs_tcp_ses_lock);
spin_lock(&GlobalMid_Lock);
server->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
task = xchg(&server->tsk, NULL);
if (task)
force_sig(SIGKILL, task);
}
static struct cifsTconInfo *
find_unc(__be32 new_target_ip_addr, char *uncName, char *userName)
static struct cifsSesInfo *
cifs_find_smb_ses(struct TCP_Server_Info *server, char *username)
{
struct list_head *tmp;
struct cifsTconInfo *tcon;
__be32 old_ip;
read_lock(&GlobalSMBSeslock);
struct cifsSesInfo *ses;
list_for_each(tmp, &GlobalTreeConnectionList) {
cFYI(1, ("Next tcon"));
tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
if (!tcon->ses || !tcon->ses->server)
write_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &server->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
if (strncmp(ses->userName, username, MAX_USERNAME_SIZE))
continue;
old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr;
cFYI(1, ("old ip addr: %x == new ip %x ?",
old_ip, new_target_ip_addr));
++ses->ses_count;
write_unlock(&cifs_tcp_ses_lock);
return ses;
}
write_unlock(&cifs_tcp_ses_lock);
return NULL;
}
static void
cifs_put_smb_ses(struct cifsSesInfo *ses)
{
int xid;
struct TCP_Server_Info *server = ses->server;
if (old_ip != new_target_ip_addr)
continue;
write_lock(&cifs_tcp_ses_lock);
if (--ses->ses_count > 0) {
write_unlock(&cifs_tcp_ses_lock);
return;
}
/* BB lock tcon, server, tcp session and increment use count? */
/* found a match on the TCP session */
/* BB check if reconnection needed */
cFYI(1, ("IP match, old UNC: %s new: %s",
tcon->treeName, uncName));
list_del_init(&ses->smb_ses_list);
write_unlock(&cifs_tcp_ses_lock);
if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE))
continue;
if (ses->status == CifsGood) {
xid = GetXid();
CIFSSMBLogoff(xid, ses);
_FreeXid(xid);
}
sesInfoFree(ses);
cifs_put_tcp_session(server);
}
cFYI(1, ("and old usr: %s new: %s",
tcon->treeName, uncName));
static struct cifsTconInfo *
cifs_find_tcon(struct cifsSesInfo *ses, const char *unc)
{
struct list_head *tmp;
struct cifsTconInfo *tcon;
if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE))
write_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &ses->tcon_list) {
tcon = list_entry(tmp, struct cifsTconInfo, tcon_list);
if (tcon->tidStatus == CifsExiting)
continue;
if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE))
continue;
/* matched smb session (user name) */
read_unlock(&GlobalSMBSeslock);
++tcon->tc_count;
write_unlock(&cifs_tcp_ses_lock);
return tcon;
}
read_unlock(&GlobalSMBSeslock);
write_unlock(&cifs_tcp_ses_lock);
return NULL;
}
static void
cifs_put_tcon(struct cifsTconInfo *tcon)
{
int xid;
struct cifsSesInfo *ses = tcon->ses;
write_lock(&cifs_tcp_ses_lock);
if (--tcon->tc_count > 0) {
write_unlock(&cifs_tcp_ses_lock);
return;
}
list_del_init(&tcon->tcon_list);
write_unlock(&cifs_tcp_ses_lock);
xid = GetXid();
CIFSSMBTDis(xid, tcon);
_FreeXid(xid);
DeleteTconOplockQEntries(tcon);
tconInfoFree(tcon);
cifs_put_smb_ses(ses);
}
int
get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path,
const struct nls_table *nls_codepage, unsigned int *pnum_referrals,
......@@ -1506,7 +1583,8 @@ static void rfc1002mangle(char *target, char *source, unsigned int length)
static int
ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
char *netbios_name, char *target_name)
char *netbios_name, char *target_name,
bool noblocksnd, bool noautotune)
{
int rc = 0;
int connected = 0;
......@@ -1578,11 +1656,15 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
(*csocket)->sk->sk_sndbuf,
(*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo));
(*csocket)->sk->sk_rcvtimeo = 7 * HZ;
if (!noblocksnd)
(*csocket)->sk->sk_sndtimeo = 3 * HZ;
/* make the bufsizes depend on wsize/rsize and max requests */
if (noautotune) {
if ((*csocket)->sk->sk_sndbuf < (200 * 1024))
(*csocket)->sk->sk_sndbuf = 200 * 1024;
if ((*csocket)->sk->sk_rcvbuf < (140 * 1024))
(*csocket)->sk->sk_rcvbuf = 140 * 1024;
}
/* send RFC1001 sessinit */
if (psin_server->sin_port == htons(RFC1001_PORT)) {
......@@ -1619,7 +1701,7 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
/* sizeof RFC1002_SESSION_REQUEST with no scope */
smb_buf->smb_buf_length = 0x81000044;
rc = smb_send(*csocket, smb_buf, 0x44,
(struct sockaddr *)psin_server);
(struct sockaddr *)psin_server, noblocksnd);
kfree(ses_init_buf);
msleep(1); /* RFC1001 layer in at least one server
requires very short break before negprot
......@@ -1639,7 +1721,8 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
}
static int
ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket,
bool noblocksnd)
{
int rc = 0;
int connected = 0;
......@@ -1708,6 +1791,8 @@ ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
the default. sock_setsockopt not used because it expects
user space buffer */
(*csocket)->sk->sk_rcvtimeo = 7 * HZ;
if (!noblocksnd)
(*csocket)->sk->sk_sndtimeo = 3 * HZ;
return rc;
}
......@@ -1845,19 +1930,104 @@ convert_delimiter(char *path, char delim)
}
}
static void setup_cifs_sb(struct smb_vol *pvolume_info,
struct cifs_sb_info *cifs_sb)
{
if (pvolume_info->rsize > CIFSMaxBufSize) {
cERROR(1, ("rsize %d too large, using MaxBufSize",
pvolume_info->rsize));
cifs_sb->rsize = CIFSMaxBufSize;
} else if ((pvolume_info->rsize) &&
(pvolume_info->rsize <= CIFSMaxBufSize))
cifs_sb->rsize = pvolume_info->rsize;
else /* default */
cifs_sb->rsize = CIFSMaxBufSize;
if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
cERROR(1, ("wsize %d too large, using 4096 instead",
pvolume_info->wsize));
cifs_sb->wsize = 4096;
} else if (pvolume_info->wsize)
cifs_sb->wsize = pvolume_info->wsize;
else
cifs_sb->wsize = min_t(const int,
PAGEVEC_SIZE * PAGE_CACHE_SIZE,
127*1024);
/* old default of CIFSMaxBufSize was too small now
that SMB Write2 can send multiple pages in kvec.
RFC1001 does not describe what happens when frame
bigger than 128K is sent so use that as max in
conjunction with 52K kvec constraint on arch with 4K
page size */
if (cifs_sb->rsize < 2048) {
cifs_sb->rsize = 2048;
/* Windows ME may prefer this */
cFYI(1, ("readsize set to minimum: 2048"));
}
/* calculate prepath */
cifs_sb->prepath = pvolume_info->prepath;
if (cifs_sb->prepath) {
cifs_sb->prepathlen = strlen(cifs_sb->prepath);
/* we can not convert the / to \ in the path
separators in the prefixpath yet because we do not
know (until reset_cifs_unix_caps is called later)
whether POSIX PATH CAP is available. We normalize
the / to \ after reset_cifs_unix_caps is called */
pvolume_info->prepath = NULL;
} else
cifs_sb->prepathlen = 0;
cifs_sb->mnt_uid = pvolume_info->linux_uid;
cifs_sb->mnt_gid = pvolume_info->linux_gid;
cifs_sb->mnt_file_mode = pvolume_info->file_mode;
cifs_sb->mnt_dir_mode = pvolume_info->dir_mode;
cFYI(1, ("file mode: 0x%x dir mode: 0x%x",
cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode));
if (pvolume_info->noperm)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
if (pvolume_info->setuids)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
if (pvolume_info->server_ino)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
if (pvolume_info->remap)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
if (pvolume_info->no_xattr)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
if (pvolume_info->sfu_emul)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
if (pvolume_info->nobrl)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
if (pvolume_info->cifs_acl)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
if (pvolume_info->override_uid)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID;
if (pvolume_info->override_gid)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;
if (pvolume_info->dynperm)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
if (pvolume_info->direct_io) {
cFYI(1, ("mounting share using direct i/o"));
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
}
if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm))
cERROR(1, ("mount option dynperm ignored if cifsacl "
"mount option supported"));
}
int
cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
char *mount_data, const char *devname)
{
int rc = 0;
int xid;
int address_type = AF_INET;
struct socket *csocket = NULL;
struct sockaddr_in sin_server;
struct sockaddr_in6 sin_server6;
struct sockaddr addr;
struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr;
struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr;
struct smb_vol volume_info;
struct cifsSesInfo *pSesInfo = NULL;
struct cifsSesInfo *existingCifsSes = NULL;
struct cifsTconInfo *tcon = NULL;
struct TCP_Server_Info *srvTcp = NULL;
......@@ -1865,6 +2035,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
/* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */
memset(&addr, 0, sizeof(struct sockaddr));
memset(&volume_info, 0, sizeof(struct smb_vol));
if (cifs_parse_mount_options(mount_data, devname, &volume_info)) {
rc = -EINVAL;
......@@ -1887,16 +2058,16 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
if (volume_info.UNCip && volume_info.UNC) {
rc = cifs_inet_pton(AF_INET, volume_info.UNCip,
&sin_server.sin_addr.s_addr);
&sin_server->sin_addr.s_addr);
if (rc <= 0) {
/* not ipv4 address, try ipv6 */
rc = cifs_inet_pton(AF_INET6, volume_info.UNCip,
&sin_server6.sin6_addr.in6_u);
&sin_server6->sin6_addr.in6_u);
if (rc > 0)
address_type = AF_INET6;
addr.sa_family = AF_INET6;
} else {
address_type = AF_INET;
addr.sa_family = AF_INET;
}
if (rc <= 0) {
......@@ -1936,38 +2107,25 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
}
}
if (address_type == AF_INET)
existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr,
NULL /* no ipv6 addr */,
volume_info.username, &srvTcp);
else if (address_type == AF_INET6) {
cFYI(1, ("looking for ipv6 address"));
existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */,
&sin_server6.sin6_addr,
volume_info.username, &srvTcp);
} else {
rc = -EINVAL;
goto out;
}
if (srvTcp) {
cFYI(1, ("Existing tcp session with server found"));
} else { /* create socket */
if (volume_info.port)
sin_server.sin_port = htons(volume_info.port);
else
sin_server.sin_port = 0;
if (address_type == AF_INET6) {
srvTcp = cifs_find_tcp_session(&addr);
if (!srvTcp) { /* create socket */
if (addr.sa_family == AF_INET6) {
cFYI(1, ("attempting ipv6 connect"));
/* BB should we allow ipv6 on port 139? */
/* other OS never observed in Wild doing 139 with v6 */
rc = ipv6_connect(&sin_server6, &csocket);
} else
rc = ipv4_connect(&sin_server, &csocket,
sin_server6->sin6_port = htons(volume_info.port);
rc = ipv6_connect(sin_server6, &csocket,
volume_info.noblocksnd);
} else {
sin_server->sin_port = htons(volume_info.port);
rc = ipv4_connect(sin_server, &csocket,
volume_info.source_rfc1001_name,
volume_info.target_rfc1001_name);
volume_info.target_rfc1001_name,
volume_info.noblocksnd,
volume_info.noautotune);
}
if (rc < 0) {
cERROR(1, ("Error connecting to IPv4 socket. "
cERROR(1, ("Error connecting to socket. "
"Aborting operation"));
if (csocket != NULL)
sock_release(csocket);
......@@ -1980,12 +2138,17 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
sock_release(csocket);
goto out;
} else {
memcpy(&srvTcp->addr.sockAddr, &sin_server,
srvTcp->noblocksnd = volume_info.noblocksnd;
srvTcp->noautotune = volume_info.noautotune;
if (addr.sa_family == AF_INET6)
memcpy(&srvTcp->addr.sockAddr6, sin_server6,
sizeof(struct sockaddr_in6));
else
memcpy(&srvTcp->addr.sockAddr, sin_server,
sizeof(struct sockaddr_in));
atomic_set(&srvTcp->inFlight, 0);
/* BB Add code for ipv6 case too */
srvTcp->ssocket = csocket;
srvTcp->protocolType = IPV4;
srvTcp->hostname = extract_hostname(volume_info.UNC);
if (IS_ERR(srvTcp->hostname)) {
rc = PTR_ERR(srvTcp->hostname);
......@@ -2015,15 +2178,28 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
memcpy(srvTcp->server_RFC1001_name,
volume_info.target_rfc1001_name, 16);
srvTcp->sequence_number = 0;
INIT_LIST_HEAD(&srvTcp->tcp_ses_list);
INIT_LIST_HEAD(&srvTcp->smb_ses_list);
++srvTcp->srv_count;
write_lock(&cifs_tcp_ses_lock);
list_add(&srvTcp->tcp_ses_list,
&cifs_tcp_ses_list);
write_unlock(&cifs_tcp_ses_lock);
}
}
if (existingCifsSes) {
pSesInfo = existingCifsSes;
pSesInfo = cifs_find_smb_ses(srvTcp, volume_info.username);
if (pSesInfo) {
cFYI(1, ("Existing smb sess found (status=%d)",
pSesInfo->status));
/*
* The existing SMB session already has a reference to srvTcp,
* so we can put back the extra one we got before
*/
cifs_put_tcp_session(srvTcp);
down(&pSesInfo->sesSem);
if (pSesInfo->status == CifsNeedReconnect) {
if (pSesInfo->need_reconnect) {
cFYI(1, ("Session needs reconnect"));
rc = cifs_setup_session(xid, pSesInfo,
cifs_sb->local_nls);
......@@ -2032,15 +2208,20 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
} else if (!rc) {
cFYI(1, ("Existing smb sess not found"));
pSesInfo = sesInfoAlloc();
if (pSesInfo == NULL)
if (pSesInfo == NULL) {
rc = -ENOMEM;
else {
goto mount_fail_check;
}
/* new SMB session uses our srvTcp ref */
pSesInfo->server = srvTcp;
sprintf(pSesInfo->serverName, "%u.%u.%u.%u",
NIPQUAD(sin_server.sin_addr.s_addr));
}
NIPQUAD(sin_server->sin_addr.s_addr));
write_lock(&cifs_tcp_ses_lock);
list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list);
write_unlock(&cifs_tcp_ses_lock);
if (!rc) {
/* volume_info.password freed at unmount */
if (volume_info.password) {
pSesInfo->password = volume_info.password;
......@@ -2048,13 +2229,11 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
volume_info.password = NULL;
}
if (volume_info.username)
strncpy(pSesInfo->userName,
volume_info.username,
strncpy(pSesInfo->userName, volume_info.username,
MAX_USERNAME_SIZE);
if (volume_info.domainname) {
int len = strlen(volume_info.domainname);
pSesInfo->domainName =
kmalloc(len + 1, GFP_KERNEL);
pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL);
if (pSesInfo->domainName)
strcpy(pSesInfo->domainName,
volume_info.domainname);
......@@ -2062,150 +2241,61 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
pSesInfo->linux_uid = volume_info.linux_uid;
pSesInfo->overrideSecFlg = volume_info.secFlg;
down(&pSesInfo->sesSem);
/* BB FIXME need to pass vol->secFlgs BB */
rc = cifs_setup_session(xid, pSesInfo,
cifs_sb->local_nls);
up(&pSesInfo->sesSem);
if (!rc)
atomic_inc(&srvTcp->socketUseCount);
}
}
/* search for existing tcon to this server share */
if (!rc) {
if (volume_info.rsize > CIFSMaxBufSize) {
cERROR(1, ("rsize %d too large, using MaxBufSize",
volume_info.rsize));
cifs_sb->rsize = CIFSMaxBufSize;
} else if ((volume_info.rsize) &&
(volume_info.rsize <= CIFSMaxBufSize))
cifs_sb->rsize = volume_info.rsize;
else /* default */
cifs_sb->rsize = CIFSMaxBufSize;
if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
cERROR(1, ("wsize %d too large, using 4096 instead",
volume_info.wsize));
cifs_sb->wsize = 4096;
} else if (volume_info.wsize)
cifs_sb->wsize = volume_info.wsize;
else
cifs_sb->wsize =
min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE,
127*1024);
/* old default of CIFSMaxBufSize was too small now
that SMB Write2 can send multiple pages in kvec.
RFC1001 does not describe what happens when frame
bigger than 128K is sent so use that as max in
conjunction with 52K kvec constraint on arch with 4K
page size */
if (cifs_sb->rsize < 2048) {
cifs_sb->rsize = 2048;
/* Windows ME may prefer this */
cFYI(1, ("readsize set to minimum: 2048"));
}
/* calculate prepath */
cifs_sb->prepath = volume_info.prepath;
if (cifs_sb->prepath) {
cifs_sb->prepathlen = strlen(cifs_sb->prepath);
/* we can not convert the / to \ in the path
separators in the prefixpath yet because we do not
know (until reset_cifs_unix_caps is called later)
whether POSIX PATH CAP is available. We normalize
the / to \ after reset_cifs_unix_caps is called */
volume_info.prepath = NULL;
} else
cifs_sb->prepathlen = 0;
cifs_sb->mnt_uid = volume_info.linux_uid;
cifs_sb->mnt_gid = volume_info.linux_gid;
cifs_sb->mnt_file_mode = volume_info.file_mode;
cifs_sb->mnt_dir_mode = volume_info.dir_mode;
cFYI(1, ("file mode: 0x%x dir mode: 0x%x",
cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode));
if (volume_info.noperm)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
if (volume_info.setuids)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
if (volume_info.server_ino)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
if (volume_info.remap)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
if (volume_info.no_xattr)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
if (volume_info.sfu_emul)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
if (volume_info.nobrl)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
if (volume_info.cifs_acl)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
if (volume_info.override_uid)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID;
if (volume_info.override_gid)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;
if (volume_info.dynperm)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
if (volume_info.direct_io) {
cFYI(1, ("mounting share using direct i/o"));
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
}
if ((volume_info.cifs_acl) && (volume_info.dynperm))
cERROR(1, ("mount option dynperm ignored if cifsacl "
"mount option supported"));
tcon =
find_unc(sin_server.sin_addr.s_addr, volume_info.UNC,
volume_info.username);
setup_cifs_sb(&volume_info, cifs_sb);
tcon = cifs_find_tcon(pSesInfo, volume_info.UNC);
if (tcon) {
cFYI(1, ("Found match on UNC path"));
/* we can have only one retry value for a connection
to a share so for resources mounted more than once
to the same server share the last value passed in
for the retry flag is used */
tcon->retry = volume_info.retry;
tcon->nocase = volume_info.nocase;
/* existing tcon already has a reference */
cifs_put_smb_ses(pSesInfo);
if (tcon->seal != volume_info.seal)
cERROR(1, ("transport encryption setting "
"conflicts with existing tid"));
} else {
tcon = tconInfoAlloc();
if (tcon == NULL)
if (tcon == NULL) {
rc = -ENOMEM;
else {
/* check for null share name ie connecting to
* dfs root */
goto mount_fail_check;
}
tcon->ses = pSesInfo;
/* BB check if this works for exactly length
* three strings */
/* check for null share name ie connect to dfs root */
if ((strchr(volume_info.UNC + 3, '\\') == NULL)
&& (strchr(volume_info.UNC + 3, '/') ==
NULL)) {
/* rc = connect_to_dfs_path(xid, pSesInfo,
"", cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);*/
&& (strchr(volume_info.UNC + 3, '/') == NULL)) {
/* rc = connect_to_dfs_path(...) */
cFYI(1, ("DFS root not supported"));
rc = -ENODEV;
goto out;
goto mount_fail_check;
} else {
/* BB Do we need to wrap sesSem around
* this TCon call and Unix SetFS as
* we do on SessSetup and reconnect? */
rc = CIFSTCon(xid, pSesInfo,
volume_info.UNC,
rc = CIFSTCon(xid, pSesInfo, volume_info.UNC,
tcon, cifs_sb->local_nls);
cFYI(1, ("CIFS Tcon rc = %d", rc));
}
if (!rc) {
atomic_inc(&pSesInfo->inUse);
tcon->retry = volume_info.retry;
tcon->nocase = volume_info.nocase;
if (rc)
goto mount_fail_check;
tcon->seal = volume_info.seal;
write_lock(&cifs_tcp_ses_lock);
list_add(&tcon->tcon_list, &pSesInfo->tcon_list);
write_unlock(&cifs_tcp_ses_lock);
}
}
}
/* we can have only one retry value for a connection
to a share so for resources mounted more than once
to the same server share the last value passed in
for the retry flag is used */
tcon->retry = volume_info.retry;
tcon->nocase = volume_info.nocase;
}
if (pSesInfo) {
if (pSesInfo->capabilities & CAP_LARGE_FILES) {
......@@ -2217,57 +2307,20 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
/* BB FIXME fix time_gran to be larger for LANMAN sessions */
sb->s_time_gran = 100;
/* on error free sesinfo and tcon struct if needed */
/* on error free sesinfo and tcon struct if needed */
mount_fail_check:
if (rc) {
/* if session setup failed, use count is zero but
we still need to free cifsd thread */
if (atomic_read(&srvTcp->socketUseCount) == 0) {
spin_lock(&GlobalMid_Lock);
srvTcp->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
if (srvTcp->tsk) {
/* If we could verify that kthread_stop would
always wake up processes blocked in
tcp in recv_mesg then we could remove the
send_sig call */
force_sig(SIGKILL, srvTcp->tsk);
kthread_stop(srvTcp->tsk);
}
}
/* If find_unc succeeded then rc == 0 so we can not end */
if (tcon) /* up accidently freeing someone elses tcon struct */
tconInfoFree(tcon);
if (existingCifsSes == NULL) {
if (pSesInfo) {
if ((pSesInfo->server) &&
(pSesInfo->status == CifsGood)) {
int temp_rc;
temp_rc = CIFSSMBLogoff(xid, pSesInfo);
/* if the socketUseCount is now zero */
if ((temp_rc == -ESHUTDOWN) &&
(pSesInfo->server) &&
(pSesInfo->server->tsk)) {
force_sig(SIGKILL,
pSesInfo->server->tsk);
kthread_stop(pSesInfo->server->tsk);
}
} else {
cFYI(1, ("No session or bad tcon"));
if ((pSesInfo->server) &&
(pSesInfo->server->tsk)) {
force_sig(SIGKILL,
pSesInfo->server->tsk);
kthread_stop(pSesInfo->server->tsk);
}
}
sesInfoFree(pSesInfo);
/* pSesInfo = NULL; */
}
/* up accidently freeing someone elses tcon struct */
if (tcon)
cifs_put_tcon(tcon);
else if (pSesInfo)
cifs_put_smb_ses(pSesInfo);
else
cifs_put_tcp_session(srvTcp);
goto out;
}
} else {
atomic_inc(&tcon->useCount);
cifs_sb->tcon = tcon;
tcon->ses = pSesInfo;
/* do not care if following two calls succeed - informational */
if (!tcon->ipc) {
......@@ -2285,23 +2338,18 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
/* convert forward to back slashes in prepath here if needed */
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
convert_delimiter(cifs_sb->prepath,
CIFS_DIR_SEP(cifs_sb));
convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb));
if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) {
cifs_sb->rsize = 1024 * 127;
cFYI(DBG2,
("no very large read support, rsize now 127K"));
cFYI(DBG2, ("no very large read support, rsize now 127K"));
}
if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
cifs_sb->wsize = min(cifs_sb->wsize,
(tcon->ses->server->maxBuf -
MAX_CIFS_HDR_SIZE));
(tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
cifs_sb->rsize = min(cifs_sb->rsize,
(tcon->ses->server->maxBuf -
MAX_CIFS_HDR_SIZE));
}
(tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
/* volume_info.password is freed above when existing session found
(in which case it is not needed anymore) but when new sesion is created
......@@ -3471,6 +3519,7 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
/* above now done in SendReceive */
if ((rc == 0) && (tcon != NULL)) {
tcon->tidStatus = CifsGood;
tcon->need_reconnect = false;
tcon->tid = smb_buffer_response->Tid;
bcc_ptr = pByteArea(smb_buffer_response);
length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2);
......@@ -3542,52 +3591,17 @@ int
cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
{
int rc = 0;
int xid;
struct cifsSesInfo *ses = NULL;
struct task_struct *cifsd_task;
char *tmp;
xid = GetXid();
if (cifs_sb->tcon) {
ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/
rc = CIFSSMBTDis(xid, cifs_sb->tcon);
if (rc == -EBUSY) {
FreeXid(xid);
return 0;
}
DeleteTconOplockQEntries(cifs_sb->tcon);
tconInfoFree(cifs_sb->tcon);
if ((ses) && (ses->server)) {
/* save off task so we do not refer to ses later */
cifsd_task = ses->server->tsk;
cFYI(1, ("About to do SMBLogoff "));
rc = CIFSSMBLogoff(xid, ses);
if (rc == -EBUSY) {
FreeXid(xid);
return 0;
} else if (rc == -ESHUTDOWN) {
cFYI(1, ("Waking up socket by sending signal"));
if (cifsd_task) {
force_sig(SIGKILL, cifsd_task);
kthread_stop(cifsd_task);
}
rc = 0;
} /* else - we have an smb session
left on this socket do not kill cifsd */
} else
cFYI(1, ("No session or bad tcon"));
}
if (cifs_sb->tcon)
cifs_put_tcon(cifs_sb->tcon);
cifs_sb->tcon = NULL;
tmp = cifs_sb->prepath;
cifs_sb->prepathlen = 0;
cifs_sb->prepath = NULL;
kfree(tmp);
if (ses)
sesInfoFree(ses);
FreeXid(xid);
return rc;
}
......@@ -3702,6 +3716,7 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
} else {
cFYI(1, ("CIFS Session Established successfully"));
pSesInfo->status = CifsGood;
pSesInfo->need_reconnect = false;
}
ss_err_exit:
......
sources/2.6.27/file.c
View file @ 4a267003
......@@ -502,7 +502,7 @@ int cifs_close(struct inode *inode, struct file *file)
if (pTcon) {
/* no sense reconnecting to close a file that is
already closed */
if (pTcon->tidStatus != CifsNeedReconnect) {
if (!pTcon->need_reconnect) {
timeout = 2;
while ((atomic_read(&pSMBFile->wrtPending) != 0)
&& (timeout <= 2048)) {
......@@ -1405,7 +1405,10 @@ retry:
if ((wbc->nr_to_write -= n_iov) <= 0)
done = 1;
index = next;
}
} else
/* Need to re-find the pages we skipped */
index = pvec.pages[0]->index + 1;
pagevec_release(&pvec);
}
if (!scanned && !done) {
......
sources/2.6.27/misc.c
View file @ 4a267003
......@@ -75,12 +75,12 @@ sesInfoAlloc(void)
ret_buf = kzalloc(sizeof(struct cifsSesInfo), GFP_KERNEL);
if (ret_buf) {
write_lock(&GlobalSMBSeslock);
atomic_inc(&sesInfoAllocCount);
ret_buf->status = CifsNew;
list_add(&ret_buf->cifsSessionList, &GlobalSMBSessionList);
++ret_buf->ses_count;
INIT_LIST_HEAD(&ret_buf->smb_ses_list);
INIT_LIST_HEAD(&ret_buf->tcon_list);
init_MUTEX(&ret_buf->sesSem);
write_unlock(&GlobalSMBSeslock);
}
return ret_buf;
}
......@@ -93,10 +93,7 @@ sesInfoFree(struct cifsSesInfo *buf_to_free)
return;
}
write_lock(&GlobalSMBSeslock);
atomic_dec(&sesInfoAllocCount);
list_del(&buf_to_free->cifsSessionList);
write_unlock(&GlobalSMBSeslock);
kfree(buf_to_free->serverOS);
kfree(buf_to_free->serverDomain);
kfree(buf_to_free->serverNOS);
......@@ -111,17 +108,14 @@ tconInfoAlloc(void)
struct cifsTconInfo *ret_buf;
ret_buf = kzalloc(sizeof(struct cifsTconInfo), GFP_KERNEL);
if (ret_buf) {
write_lock(&GlobalSMBSeslock);
atomic_inc(&tconInfoAllocCount);
list_add(&ret_buf->cifsConnectionList,
&GlobalTreeConnectionList);
ret_buf->tidStatus = CifsNew;
++ret_buf->tc_count;
INIT_LIST_HEAD(&ret_buf->openFileList);
init_MUTEX(&ret_buf->tconSem);
INIT_LIST_HEAD(&ret_buf->tcon_list);
#ifdef CONFIG_CIFS_STATS
spin_lock_init(&ret_buf->stat_lock);
#endif
write_unlock(&GlobalSMBSeslock);
}
return ret_buf;
}
......@@ -133,10 +127,7 @@ tconInfoFree(struct cifsTconInfo *buf_to_free)
cFYI(1, ("Null buffer passed to tconInfoFree"));
return;
}
write_lock(&GlobalSMBSeslock);
atomic_dec(&tconInfoAllocCount);
list_del(&buf_to_free->cifsConnectionList);
write_unlock(&GlobalSMBSeslock);
kfree(buf_to_free->nativeFileSystem);
kfree(buf_to_free);
}
......@@ -354,9 +345,9 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
if (current->fsuid != treeCon->ses->linux_uid) {
cFYI(1, ("Multiuser mode and UID "
"did not match tcon uid"));
read_lock(&GlobalSMBSeslock);
list_for_each(temp_item, &GlobalSMBSessionList) {
ses = list_entry(temp_item, struct cifsSesInfo, cifsSessionList);
read_lock(&cifs_tcp_ses_lock);
list_for_each(temp_item, &treeCon->ses->server->smb_ses_list) {
ses = list_entry(temp_item, struct cifsSesInfo, smb_ses_list);
if (ses->linux_uid == current->fsuid) {
if (ses->server == treeCon->ses->server) {
cFYI(1, ("found matching uid substitute right smb_uid"));
......@@ -368,7 +359,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
}
}
}
read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock);
}
}
}
......@@ -501,9 +492,10 @@ bool
is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
{
struct smb_com_lock_req *pSMB = (struct smb_com_lock_req *)buf;
struct list_head *tmp;
struct list_head *tmp1;
struct list_head *tmp, *tmp1, *tmp2;
struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
struct cifsInodeInfo *pCifsInode;
struct cifsFileInfo *netfile;
cFYI(1, ("Checking for oplock break or dnotify response"));
......@@ -558,42 +550,42 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
return false;
/* look up tcon based on tid & uid */
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalTreeConnectionList) {
tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
if ((tcon->tid == buf->Tid) && (srv == tcon->ses->server)) {
read_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &srv->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
list_for_each(tmp1, &ses->tcon_list) {
tcon = list_entry(tmp1, struct cifsTconInfo, tcon_list);
if (tcon->tid != buf->Tid)
continue;
cifs_stats_inc(&tcon->num_oplock_brks);
list_for_each(tmp1, &tcon->openFileList) {
netfile = list_entry(tmp1, struct cifsFileInfo,
list_for_each(tmp2, &tcon->openFileList) {
netfile = list_entry(tmp2, struct cifsFileInfo,
tlist);
if (pSMB->Fid == netfile->netfid) {
struct cifsInodeInfo *pCifsInode;
read_unlock(&GlobalSMBSeslock);
cFYI(1,
("file id match, oplock break"));
pCifsInode =
CIFS_I(netfile->pInode);
if (pSMB->Fid != netfile->netfid)
continue;
read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("file id match, oplock break"));
pCifsInode = CIFS_I(netfile->pInode);
pCifsInode->clientCanCacheAll = false;
if (pSMB->OplockLevel == 0)
pCifsInode->clientCanCacheRead
= false;
pCifsInode->clientCanCacheRead = false;
pCifsInode->oplockPending = true;
AllocOplockQEntry(netfile->pInode,
netfile->netfid,
tcon);
cFYI(1,
("about to wake up oplock thread"));
netfile->netfid, tcon);
cFYI(1, ("about to wake up oplock thread"));
if (oplockThread)
wake_up_process(oplockThread);
return true;
}
}
read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("No matching file for oplock break"));
return true;
}
}
read_unlock(&GlobalSMBSeslock);
read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("Can not process oplock break for non-existent connection"));
return true;
}
......
sources/2.6.27/transport.c
View file @ 4a267003
......@@ -162,7 +162,7 @@ void DeleteTconOplockQEntries(struct cifsTconInfo *tcon)
int
smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
unsigned int smb_buf_length, struct sockaddr *sin)
unsigned int smb_buf_length, struct sockaddr *sin, bool noblocksnd)
{
int rc = 0;
int i = 0;
......@@ -179,7 +179,10 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
smb_msg.msg_namelen = sizeof(struct sockaddr);
smb_msg.msg_control = NULL;
smb_msg.msg_controllen = 0;
smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL; /* BB add more flags?*/
if (noblocksnd)
smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
else
smb_msg.msg_flags = MSG_NOSIGNAL;
/* smb header is converted in header_assemble. bcc and rest of SMB word
area, and byte area if necessary, is converted to littleendian in
......@@ -230,8 +233,8 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
}
static int
smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
struct sockaddr *sin)
smb_send2(struct TCP_Server_Info *server, struct kvec *iov, int n_vec,
struct sockaddr *sin, bool noblocksnd)
{
int rc = 0;
int i = 0;
......@@ -241,6 +244,7 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
unsigned int total_len;
int first_vec = 0;
unsigned int smb_buf_length = smb_buffer->smb_buf_length;
struct socket *ssocket = server->ssocket;
if (ssocket == NULL)
return -ENOTSOCK; /* BB eventually add reconnect code here */
......@@ -249,7 +253,10 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
smb_msg.msg_namelen = sizeof(struct sockaddr);
smb_msg.msg_control = NULL;
smb_msg.msg_controllen = 0;
smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL; /* BB add more flags?*/
if (noblocksnd)
smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
else
smb_msg.msg_flags = MSG_NOSIGNAL;
/* smb header is converted in header_assemble. bcc and rest of SMB word
area, and byte area if necessary, is converted to littleendian in
......@@ -284,8 +291,11 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
if (rc < 0)
break;
if (rc >= total_len) {
WARN_ON(rc > total_len);
if (rc == total_len) {
total_len = 0;
break;
} else if (rc > total_len) {
cERROR(1, ("sent %d requested %d", rc, total_len));
break;
}
if (rc == 0) {
......@@ -313,6 +323,16 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
i = 0; /* in case we get ENOSPC on the next send */
}
if ((total_len > 0) && (total_len != smb_buf_length + 4)) {
cFYI(1, ("partial send (%d remaining), terminating session",
total_len));
/* If we have only sent part of an SMB then the next SMB
could be taken as the remainder of this one. We need
to kill the socket so the server throws away the partial
SMB */
server->tcpStatus = CifsNeedReconnect;
}
if (rc < 0) {
cERROR(1, ("Error %d sending data on socket to server", rc));
} else
......@@ -519,8 +539,9 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&ses->server->inSend);
#endif
rc = smb_send2(ses->server->ssocket, iov, n_vec,
(struct sockaddr *) &(ses->server->addr.sockAddr));
rc = smb_send2(ses->server, iov, n_vec,
(struct sockaddr *) &(ses->server->addr.sockAddr),
ses->server->noblocksnd);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
......@@ -712,7 +733,8 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
atomic_inc(&ses->server->inSend);
#endif
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
(struct sockaddr *) &(ses->server->addr.sockAddr));
(struct sockaddr *) &(ses->server->addr.sockAddr),
ses->server->noblocksnd);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
......@@ -852,7 +874,8 @@ send_nt_cancel(struct cifsTconInfo *tcon, struct smb_hdr *in_buf,
return rc;
}
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
(struct sockaddr *) &(ses->server->addr.sockAddr));
(struct sockaddr *) &(ses->server->addr.sockAddr),
ses->server->noblocksnd);
up(&ses->server->tcpSem);
return rc;
}
......@@ -942,7 +965,8 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
atomic_inc(&ses->server->inSend);
#endif
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
(struct sockaddr *) &(ses->server->addr.sockAddr));
(struct sockaddr *) &(ses->server->addr.sockAddr),
ses->server->noblocksnd);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
......
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