From 0468a2cf914e79442b8309ce62e3f861599d8cab Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 1 Dec 2008 07:09:35 -0500 Subject: cifs: take module reference when starting cifsd cifsd can outlive the last cifs mount. We need to hold a module reference until it exits to prevent someone from unplugging the module until we're ready. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index c7d34171458..701daf411a4 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -776,7 +776,7 @@ multi_t2_fnd: set_current_state(TASK_RUNNING); } - return 0; + module_put_and_exit(0); } /* extract the host portion of the UNC string */ @@ -2176,10 +2176,17 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, so no need to spinlock this init of tcpStatus */ srvTcp->tcpStatus = CifsNew; init_MUTEX(&srvTcp->tcpSem); + + /* + * since we're in a cifs function already, we know that + * this will succeed. No need for try_module_get(). + */ + __module_get(THIS_MODULE); srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); if (IS_ERR(srvTcp->tsk)) { rc = PTR_ERR(srvTcp->tsk); cERROR(1, ("error %d create cifsd thread", rc)); + module_put(THIS_MODULE); srvTcp->tsk = NULL; sock_release(csocket); kfree(srvTcp->hostname); -- cgit v1.2.3-70-g09d2 From 72ca545b2d83ac7de671bf66d2dbc214528b4c0c Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 1 Dec 2008 07:09:36 -0500 Subject: cifs: convert tcpSem to a mutex Mutexes are preferred for single-holder semaphores... Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifsglob.h | 2 +- fs/cifs/connect.c | 6 +++--- fs/cifs/transport.c | 28 ++++++++++++++-------------- 3 files changed, 18 insertions(+), 18 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 82e28f5515c..9b002cca6bb 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -151,7 +151,7 @@ struct TCP_Server_Info { atomic_t num_waiters; /* blocked waiting to get in sendrecv */ #endif enum statusEnum tcpStatus; /* what we think the status is */ - struct semaphore tcpSem; + struct mutex srv_mutex; struct task_struct *tsk; char server_GUID[16]; char secMode; diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 701daf411a4..61b68a0ee2f 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -156,7 +156,7 @@ cifs_reconnect(struct TCP_Server_Info *server) } read_unlock(&cifs_tcp_ses_lock); /* do not want to be sending data on a socket we are freeing */ - down(&server->tcpSem); + mutex_lock(&server->srv_mutex); if (server->ssocket) { cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, server->ssocket->flags)); @@ -182,7 +182,7 @@ cifs_reconnect(struct TCP_Server_Info *server) } } spin_unlock(&GlobalMid_Lock); - up(&server->tcpSem); + mutex_unlock(&server->srv_mutex); while ((server->tcpStatus != CifsExiting) && (server->tcpStatus != CifsGood)) { @@ -2175,7 +2175,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, to the struct since the kernel thread not created yet so no need to spinlock this init of tcpStatus */ srvTcp->tcpStatus = CifsNew; - init_MUTEX(&srvTcp->tcpSem); + mutex_init(&srvTcp->srv_mutex); /* * since we're in a cifs function already, we know that diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 8e0d1c397c7..cd4ed65d6cd 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -516,11 +516,11 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses, and avoid races inside tcp sendmsg code that could cause corruption of smb data */ - down(&ses->server->tcpSem); + mutex_lock(&ses->server->srv_mutex); rc = allocate_mid(ses, in_buf, &midQ); if (rc) { - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); cifs_small_buf_release(in_buf); /* Update # of requests on wire to server */ atomic_dec(&ses->server->inFlight); @@ -541,7 +541,7 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses, midQ->when_sent = jiffies; #endif - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); cifs_small_buf_release(in_buf); if (rc < 0) @@ -698,11 +698,11 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, and avoid races inside tcp sendmsg code that could cause corruption of smb data */ - down(&ses->server->tcpSem); + mutex_lock(&ses->server->srv_mutex); rc = allocate_mid(ses, in_buf, &midQ); if (rc) { - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); /* Update # of requests on wire to server */ atomic_dec(&ses->server->inFlight); wake_up(&ses->server->request_q); @@ -713,7 +713,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, cERROR(1, ("Illegal length, greater than maximum frame, %d", in_buf->smb_buf_length)); DeleteMidQEntry(midQ); - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); /* Update # of requests on wire to server */ atomic_dec(&ses->server->inFlight); wake_up(&ses->server->request_q); @@ -733,7 +733,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, atomic_dec(&ses->server->inSend); midQ->when_sent = jiffies; #endif - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); if (rc < 0) goto out; @@ -861,16 +861,16 @@ send_nt_cancel(struct cifsTconInfo *tcon, struct smb_hdr *in_buf, header_assemble(in_buf, SMB_COM_NT_CANCEL, tcon, 0); in_buf->Mid = mid; - down(&ses->server->tcpSem); + mutex_lock(&ses->server->srv_mutex); rc = cifs_sign_smb(in_buf, ses->server, &midQ->sequence_number); if (rc) { - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); return rc; } rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length, (struct sockaddr *) &(ses->server->addr.sockAddr), ses->server->noblocksnd); - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); return rc; } @@ -936,16 +936,16 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon, and avoid races inside tcp sendmsg code that could cause corruption of smb data */ - down(&ses->server->tcpSem); + mutex_lock(&ses->server->srv_mutex); rc = allocate_mid(ses, in_buf, &midQ); if (rc) { - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); return rc; } if (in_buf->smb_buf_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); cERROR(1, ("Illegal length, greater than maximum frame, %d", in_buf->smb_buf_length)); DeleteMidQEntry(midQ); @@ -965,7 +965,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon, atomic_dec(&ses->server->inSend); midQ->when_sent = jiffies; #endif - up(&ses->server->tcpSem); + mutex_unlock(&ses->server->srv_mutex); if (rc < 0) { DeleteMidQEntry(midQ); -- cgit v1.2.3-70-g09d2 From 8ecaf67a8ea58c8f131ff045475c74e9538d6b7a Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 1 Dec 2008 15:23:50 -0500 Subject: cifs: account for IPv6 in ses->serverName and clean up netbios name handling The current code for setting the session serverName is IPv4-specific. Allow it to be an IPv6 address as well. Use NIP* macros to set the format. This also entails increasing the length of the serverName field, so declare a new macro for RFC1001 name length and use it in the appropriate places. Finally, drop the unicode_server_Name field from TCP_Server_Info since it's not used. We can add it back later if needed, but for now it just wastes memory. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifsglob.h | 11 +++++++---- fs/cifs/connect.c | 38 ++++++++++++++++++++++++++------------ 2 files changed, 33 insertions(+), 16 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 9b002cca6bb..0fb934d3623 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -47,7 +47,11 @@ */ #define CIFS_MAX_REQ 50 -#define SERVER_NAME_LENGTH 15 +#define RFC1001_NAME_LEN 15 +#define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) + +/* currently length of NIP6_FMT */ +#define SERVER_NAME_LENGTH 40 #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) /* used to define string lengths for reversing unicode strings */ @@ -125,8 +129,7 @@ struct TCP_Server_Info { 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]; + char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; char *hostname; /* hostname portion of UNC string */ struct socket *ssocket; union { @@ -171,7 +174,7 @@ struct TCP_Server_Info { __u16 CurrentMid; /* multiplex id - rotating counter */ char cryptKey[CIFS_CRYPTO_KEY_SIZE]; /* 16th byte of RFC1001 workstation name is always null */ - char workstation_RFC1001_name[SERVER_NAME_LEN_WITH_NULL]; + char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; __u32 sequence_number; /* needed for CIFS PDU signature */ struct mac_key mac_signing_key; char ntlmv2_hash[16]; diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 61b68a0ee2f..65c12194006 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1690,22 +1690,30 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, if (ses_init_buf) { ses_init_buf->trailer.session_req.called_len = 32; if (target_name && (target_name[0] != 0)) { - rfc1002mangle(ses_init_buf->trailer.session_req.called_name, - target_name, 16); + rfc1002mangle(ses_init_buf->trailer. + session_req.called_name, + target_name, + RFC1001_NAME_LEN_WITH_NULL); } else { - rfc1002mangle(ses_init_buf->trailer.session_req.called_name, - DEFAULT_CIFS_CALLED_NAME, 16); + rfc1002mangle(ses_init_buf->trailer. + session_req.called_name, + DEFAULT_CIFS_CALLED_NAME, + RFC1001_NAME_LEN_WITH_NULL); } ses_init_buf->trailer.session_req.calling_len = 32; /* calling name ends in null (byte 16) from old smb convention. */ if (netbios_name && (netbios_name[0] != 0)) { - rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, - netbios_name, 16); + rfc1002mangle(ses_init_buf->trailer. + session_req.calling_name, + netbios_name, + RFC1001_NAME_LEN_WITH_NULL); } else { - rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, - "LINUX_CIFS_CLNT", 16); + rfc1002mangle(ses_init_buf->trailer. + session_req.calling_name, + "LINUX_CIFS_CLNT", + RFC1001_NAME_LEN_WITH_NULL); } ses_init_buf->trailer.session_req.scope1 = 0; ses_init_buf->trailer.session_req.scope2 = 0; @@ -2194,9 +2202,11 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, } rc = 0; memcpy(srvTcp->workstation_RFC1001_name, - volume_info.source_rfc1001_name, 16); + volume_info.source_rfc1001_name, + RFC1001_NAME_LEN_WITH_NULL); memcpy(srvTcp->server_RFC1001_name, - volume_info.target_rfc1001_name, 16); + volume_info.target_rfc1001_name, + RFC1001_NAME_LEN_WITH_NULL); srvTcp->sequence_number = 0; INIT_LIST_HEAD(&srvTcp->tcp_ses_list); INIT_LIST_HEAD(&srvTcp->smb_ses_list); @@ -2235,8 +2245,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, /* new SMB session uses our srvTcp ref */ pSesInfo->server = srvTcp; - sprintf(pSesInfo->serverName, "%u.%u.%u.%u", - NIPQUAD(sin_server->sin_addr.s_addr)); + if (addr.sa_family == AF_INET6) + sprintf(pSesInfo->serverName, NIP6_FMT, + NIP6(sin_server6->sin6_addr)); + else + sprintf(pSesInfo->serverName, NIPQUAD_FMT, + NIPQUAD(sin_server->sin_addr.s_addr)); write_lock(&cifs_tcp_ses_lock); list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); -- cgit v1.2.3-70-g09d2 From 63c038c29774476c5dae759e348c269342b4dbef Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 1 Dec 2008 18:41:46 -0500 Subject: cifs: move allocation of new TCP_Server_Info into separate function Clean up cifs_mount a bit by moving the code that creates new TCP sessions into a separate function. Have that function search for an existing socket and then create a new one if one isn't found. Also reorganize the initializion of TCP_Server_Info a bit to prepare for cleanup of the socket connection code. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 282 +++++++++++++++++++++++++++++------------------------- 1 file changed, 150 insertions(+), 132 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 65c12194006..56095b24d5b 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1417,6 +1417,148 @@ cifs_put_tcp_session(struct TCP_Server_Info *server) force_sig(SIGKILL, task); } +static struct TCP_Server_Info * +cifs_get_tcp_session(struct smb_vol *volume_info) +{ + struct TCP_Server_Info *tcp_ses = NULL; + struct sockaddr addr; + struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; + struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; + int rc; + + memset(&addr, 0, sizeof(struct sockaddr)); + + if (volume_info->UNCip && volume_info->UNC) { + rc = cifs_inet_pton(AF_INET, volume_info->UNCip, + &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); + if (rc > 0) + addr.sa_family = AF_INET6; + } else { + addr.sa_family = AF_INET; + } + + if (rc <= 0) { + /* we failed translating address */ + rc = -EINVAL; + goto out_err; + } + + cFYI(1, ("UNC: %s ip: %s", volume_info->UNC, + volume_info->UNCip)); + } else if (volume_info->UNCip) { + /* BB using ip addr as tcp_ses name to connect to the + DFS root below */ + cERROR(1, ("Connecting to DFS root not implemented yet")); + rc = -EINVAL; + goto out_err; + } else /* which tcp_sess DFS root would we conect to */ { + cERROR(1, + ("CIFS mount error: No UNC path (e.g. -o " + "unc=//192.168.1.100/public) specified")); + rc = -EINVAL; + goto out_err; + } + + /* see if we already have a matching tcp_ses */ + tcp_ses = cifs_find_tcp_session(&addr); + if (tcp_ses) + return tcp_ses; + + tcp_ses = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); + if (!tcp_ses) { + rc = -ENOMEM; + goto out_err; + } + + tcp_ses->hostname = extract_hostname(volume_info->UNC); + if (IS_ERR(tcp_ses->hostname)) { + rc = PTR_ERR(tcp_ses->hostname); + goto out_err; + } + + tcp_ses->noblocksnd = volume_info->noblocksnd; + tcp_ses->noautotune = volume_info->noautotune; + atomic_set(&tcp_ses->inFlight, 0); + init_waitqueue_head(&tcp_ses->response_q); + init_waitqueue_head(&tcp_ses->request_q); + INIT_LIST_HEAD(&tcp_ses->pending_mid_q); + mutex_init(&tcp_ses->srv_mutex); + memcpy(tcp_ses->workstation_RFC1001_name, + volume_info->source_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); + memcpy(tcp_ses->server_RFC1001_name, + volume_info->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); + tcp_ses->sequence_number = 0; + INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); + INIT_LIST_HEAD(&tcp_ses->smb_ses_list); + + /* + * at this point we are the only ones with the pointer + * to the struct since the kernel thread not created yet + * no need to spinlock this init of tcpStatus or srv_count + */ + tcp_ses->tcpStatus = CifsNew; + ++tcp_ses->srv_count; + + 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 */ + memcpy(&tcp_ses->addr.sockAddr6, sin_server6, + sizeof(struct sockaddr_in6)); + sin_server6->sin6_port = htons(volume_info->port); + rc = ipv6_connect(sin_server6, &tcp_ses->ssocket, + volume_info->noblocksnd); + } else { + memcpy(&tcp_ses->addr.sockAddr, sin_server, + sizeof(struct sockaddr_in)); + sin_server->sin_port = htons(volume_info->port); + rc = ipv4_connect(sin_server, &tcp_ses->ssocket, + volume_info->source_rfc1001_name, + volume_info->target_rfc1001_name, + volume_info->noblocksnd, + volume_info->noautotune); + } + if (rc < 0) { + cERROR(1, ("Error connecting to socket. Aborting operation")); + goto out_err; + } + + /* + * since we're in a cifs function already, we know that + * this will succeed. No need for try_module_get(). + */ + __module_get(THIS_MODULE); + tcp_ses->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, + tcp_ses, "cifsd"); + if (IS_ERR(tcp_ses->tsk)) { + rc = PTR_ERR(tcp_ses->tsk); + cERROR(1, ("error %d create cifsd thread", rc)); + module_put(THIS_MODULE); + goto out_err; + } + + /* thread spawned, put it on the list */ + write_lock(&cifs_tcp_ses_lock); + list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list); + write_unlock(&cifs_tcp_ses_lock); + + return tcp_ses; + +out_err: + if (tcp_ses) { + kfree(tcp_ses->hostname); + if (tcp_ses->ssocket) + sock_release(tcp_ses->ssocket); + kfree(tcp_ses); + } + return ERR_PTR(rc); +} + static struct cifsSesInfo * cifs_find_smb_ses(struct TCP_Server_Info *server, char *username) { @@ -2043,10 +2185,6 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, { int rc = 0; int xid; - struct socket *csocket = NULL; - 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 cifsTconInfo *tcon = NULL; @@ -2056,7 +2194,6 @@ 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; @@ -2077,42 +2214,6 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, goto out; } - if (volume_info.UNCip && volume_info.UNC) { - rc = cifs_inet_pton(AF_INET, volume_info.UNCip, - &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); - if (rc > 0) - addr.sa_family = AF_INET6; - } else { - addr.sa_family = AF_INET; - } - - if (rc <= 0) { - /* we failed translating address */ - rc = -EINVAL; - goto out; - } - - cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); - /* success */ - rc = 0; - } else if (volume_info.UNCip) { - /* BB using ip addr as server name to connect to the - DFS root below */ - cERROR(1, ("Connecting to DFS root not implemented yet")); - rc = -EINVAL; - goto out; - } else /* which servers DFS root would we conect to */ { - cERROR(1, - ("CIFS mount error: No UNC path (e.g. -o " - "unc=//192.168.1.100/public) specified")); - rc = -EINVAL; - goto out; - } /* this is needed for ASCII cp to Unicode converts */ if (volume_info.iocharset == NULL) { @@ -2128,94 +2229,11 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, } } - 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 */ - 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.noblocksnd, - volume_info.noautotune); - } - if (rc < 0) { - cERROR(1, ("Error connecting to socket. " - "Aborting operation")); - if (csocket != NULL) - sock_release(csocket); - goto out; - } - - srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); - if (!srvTcp) { - rc = -ENOMEM; - sock_release(csocket); - goto out; - } else { - 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->hostname = extract_hostname(volume_info.UNC); - if (IS_ERR(srvTcp->hostname)) { - rc = PTR_ERR(srvTcp->hostname); - sock_release(csocket); - goto out; - } - init_waitqueue_head(&srvTcp->response_q); - init_waitqueue_head(&srvTcp->request_q); - INIT_LIST_HEAD(&srvTcp->pending_mid_q); - /* at this point we are the only ones with the pointer - to the struct since the kernel thread not created yet - so no need to spinlock this init of tcpStatus */ - srvTcp->tcpStatus = CifsNew; - mutex_init(&srvTcp->srv_mutex); - - /* - * since we're in a cifs function already, we know that - * this will succeed. No need for try_module_get(). - */ - __module_get(THIS_MODULE); - srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); - if (IS_ERR(srvTcp->tsk)) { - rc = PTR_ERR(srvTcp->tsk); - cERROR(1, ("error %d create cifsd thread", rc)); - module_put(THIS_MODULE); - srvTcp->tsk = NULL; - sock_release(csocket); - kfree(srvTcp->hostname); - goto out; - } - rc = 0; - memcpy(srvTcp->workstation_RFC1001_name, - volume_info.source_rfc1001_name, - RFC1001_NAME_LEN_WITH_NULL); - memcpy(srvTcp->server_RFC1001_name, - volume_info.target_rfc1001_name, - RFC1001_NAME_LEN_WITH_NULL); - 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); - } + /* get a reference to a tcp session */ + srvTcp = cifs_get_tcp_session(&volume_info); + if (IS_ERR(srvTcp)) { + rc = PTR_ERR(srvTcp); + goto out; } pSesInfo = cifs_find_smb_ses(srvTcp, volume_info.username); @@ -2245,12 +2263,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, /* new SMB session uses our srvTcp ref */ pSesInfo->server = srvTcp; - if (addr.sa_family == AF_INET6) + if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6) sprintf(pSesInfo->serverName, NIP6_FMT, - NIP6(sin_server6->sin6_addr)); + NIP6(srvTcp->addr.sockAddr6.sin6_addr)); else sprintf(pSesInfo->serverName, NIPQUAD_FMT, - NIPQUAD(sin_server->sin_addr.s_addr)); + NIPQUAD(srvTcp->addr.sockAddr.sin_addr.s_addr)); write_lock(&cifs_tcp_ses_lock); list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); -- cgit v1.2.3-70-g09d2 From 7586b76585d15db767c19255ba0ecfb164df99f7 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 1 Dec 2008 18:41:49 -0500 Subject: cifs: don't declare smb_vol info on the stack struct smb_vol is fairly large, it's probably best to kzalloc it... Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 91 ++++++++++++++++++++++++++++++------------------------- 1 file changed, 49 insertions(+), 42 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 56095b24d5b..c2ed0f57a66 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2185,27 +2185,30 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, { int rc = 0; int xid; - struct smb_vol volume_info; + struct smb_vol *volume_info; struct cifsSesInfo *pSesInfo = NULL; struct cifsTconInfo *tcon = NULL; struct TCP_Server_Info *srvTcp = NULL; xid = GetXid(); -/* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ + volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); + if (!volume_info) { + rc = -ENOMEM; + goto out; + } - memset(&volume_info, 0, sizeof(struct smb_vol)); - if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { + if (cifs_parse_mount_options(mount_data, devname, volume_info)) { rc = -EINVAL; goto out; } - if (volume_info.nullauth) { + if (volume_info->nullauth) { cFYI(1, ("null user")); - volume_info.username = ""; - } else if (volume_info.username) { + volume_info->username = ""; + } else if (volume_info->username) { /* BB fixme parse for domain name here */ - cFYI(1, ("Username: %s", volume_info.username)); + cFYI(1, ("Username: %s", volume_info->username)); } else { cifserror("No username specified"); /* In userspace mount helper we can get user name from alternate @@ -2216,27 +2219,27 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, /* this is needed for ASCII cp to Unicode converts */ - if (volume_info.iocharset == NULL) { + if (volume_info->iocharset == NULL) { cifs_sb->local_nls = load_nls_default(); /* load_nls_default can not return null */ } else { - cifs_sb->local_nls = load_nls(volume_info.iocharset); + cifs_sb->local_nls = load_nls(volume_info->iocharset); if (cifs_sb->local_nls == NULL) { cERROR(1, ("CIFS mount error: iocharset %s not found", - volume_info.iocharset)); + volume_info->iocharset)); rc = -ELIBACC; goto out; } } /* get a reference to a tcp session */ - srvTcp = cifs_get_tcp_session(&volume_info); + srvTcp = cifs_get_tcp_session(volume_info); if (IS_ERR(srvTcp)) { rc = PTR_ERR(srvTcp); goto out; } - pSesInfo = cifs_find_smb_ses(srvTcp, volume_info.username); + pSesInfo = cifs_find_smb_ses(srvTcp, volume_info->username); if (pSesInfo) { cFYI(1, ("Existing smb sess found (status=%d)", pSesInfo->status)); @@ -2274,24 +2277,24 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); write_unlock(&cifs_tcp_ses_lock); - /* volume_info.password freed at unmount */ - if (volume_info.password) { - pSesInfo->password = volume_info.password; + /* volume_info->password freed at unmount */ + if (volume_info->password) { + pSesInfo->password = volume_info->password; /* set to NULL to prevent freeing on exit */ - volume_info.password = NULL; + volume_info->password = NULL; } - if (volume_info.username) - strncpy(pSesInfo->userName, volume_info.username, + if (volume_info->username) + strncpy(pSesInfo->userName, volume_info->username, MAX_USERNAME_SIZE); - if (volume_info.domainname) { - int len = strlen(volume_info.domainname); + if (volume_info->domainname) { + int len = strlen(volume_info->domainname); pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL); if (pSesInfo->domainName) strcpy(pSesInfo->domainName, - volume_info.domainname); + volume_info->domainname); } - pSesInfo->linux_uid = volume_info.linux_uid; - pSesInfo->overrideSecFlg = volume_info.secFlg; + pSesInfo->linux_uid = volume_info->linux_uid; + pSesInfo->overrideSecFlg = volume_info->secFlg; down(&pSesInfo->sesSem); /* BB FIXME need to pass vol->secFlgs BB */ @@ -2302,14 +2305,14 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, /* search for existing tcon to this server share */ if (!rc) { - setup_cifs_sb(&volume_info, cifs_sb); + setup_cifs_sb(volume_info, cifs_sb); - tcon = cifs_find_tcon(pSesInfo, volume_info.UNC); + tcon = cifs_find_tcon(pSesInfo, volume_info->UNC); if (tcon) { cFYI(1, ("Found match on UNC path")); /* existing tcon already has a reference */ cifs_put_smb_ses(pSesInfo); - if (tcon->seal != volume_info.seal) + if (tcon->seal != volume_info->seal) cERROR(1, ("transport encryption setting " "conflicts with existing tid")); } else { @@ -2321,8 +2324,8 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, tcon->ses = pSesInfo; /* check for null share name ie connect to dfs root */ - if ((strchr(volume_info.UNC + 3, '\\') == NULL) - && (strchr(volume_info.UNC + 3, '/') == NULL)) { + if ((strchr(volume_info->UNC + 3, '\\') == NULL) + && (strchr(volume_info->UNC + 3, '/') == NULL)) { /* rc = connect_to_dfs_path(...) */ cFYI(1, ("DFS root not supported")); rc = -ENODEV; @@ -2331,10 +2334,10 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, /* 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 (volume_info.nodfs) { + if (volume_info->nodfs) { tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; cFYI(1, ("DFS disabled (%d)", tcon->Flags)); @@ -2342,7 +2345,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, } if (rc) goto mount_fail_check; - tcon->seal = volume_info.seal; + 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); @@ -2352,9 +2355,9 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, 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; - tcon->local_lease = volume_info.local_lease; + tcon->retry = volume_info->retry; + tcon->nocase = volume_info->nocase; + tcon->local_lease = volume_info->local_lease; } if (pSesInfo) { if (pSesInfo->capabilities & CAP_LARGE_FILES) { @@ -2391,7 +2394,7 @@ mount_fail_check: if (tcon->ses->capabilities & CAP_UNIX) /* reset of caps checks mount to see if unix extensions disabled for just this mount */ - reset_cifs_unix_caps(xid, tcon, sb, &volume_info); + reset_cifs_unix_caps(xid, tcon, sb, volume_info); else tcon->unix_ext = 0; /* server does not support them */ @@ -2410,18 +2413,22 @@ mount_fail_check: cifs_sb->rsize = min(cifs_sb->rsize, (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); - /* volume_info.password is freed above when existing session found + /* volume_info->password is freed above when existing session found (in which case it is not needed anymore) but when new sesion is created the password ptr is put in the new session structure (in which case the password will be freed at unmount time) */ out: /* zero out password before freeing */ - if (volume_info.password != NULL) { - memset(volume_info.password, 0, strlen(volume_info.password)); - kfree(volume_info.password); + if (volume_info) { + if (volume_info->password != NULL) { + memset(volume_info->password, 0, + strlen(volume_info->password)); + kfree(volume_info->password); + } + kfree(volume_info->UNC); + kfree(volume_info->prepath); + kfree(volume_info); } - kfree(volume_info.UNC); - kfree(volume_info.prepath); FreeXid(xid); return rc; } -- cgit v1.2.3-70-g09d2 From bcf4b1063db246a90b9e09e0556f635d632eef36 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 1 Dec 2008 18:42:15 -0500 Subject: cifs: make ipv4_connect take a TCP_Server_Info arg In order to unify the smb_send routines, we need to reorganize the routines that connect the sockets. Have ipv4_connect take a TCP_Server_Info pointer and get the necessary fields from that. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 146 ++++++++++++++++++++++++++---------------------------- 1 file changed, 69 insertions(+), 77 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index c2ed0f57a66..a36f4bd5a76 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -101,12 +101,7 @@ struct smb_vol { char *prepath; }; -static int ipv4_connect(struct sockaddr_in *psin_server, - struct socket **csocket, - char *netb_name, - char *server_netb_name, - bool noblocksnd, - bool nosndbuf); /* ipv6 never set sndbuf size */ +static int ipv4_connect(struct TCP_Server_Info *server); static int ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket, bool noblocksnd); @@ -187,16 +182,11 @@ cifs_reconnect(struct TCP_Server_Info *server) while ((server->tcpStatus != CifsExiting) && (server->tcpStatus != CifsGood)) { try_to_freeze(); - if (server->addr.sockAddr6.sin6_family == AF_INET6) { + if (server->addr.sockAddr6.sin6_family == AF_INET6) rc = ipv6_connect(&server->addr.sockAddr6, &server->ssocket, server->noautotune); - } else { - rc = ipv4_connect(&server->addr.sockAddr, - &server->ssocket, - server->workstation_RFC1001_name, - server->server_RFC1001_name, - server->noblocksnd, server->noautotune); - } + else + rc = ipv4_connect(server); if (rc) { cFYI(1, ("reconnect error %d", rc)); msleep(3000); @@ -1517,11 +1507,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info) memcpy(&tcp_ses->addr.sockAddr, sin_server, sizeof(struct sockaddr_in)); sin_server->sin_port = htons(volume_info->port); - rc = ipv4_connect(sin_server, &tcp_ses->ssocket, - volume_info->source_rfc1001_name, - volume_info->target_rfc1001_name, - volume_info->noblocksnd, - volume_info->noautotune); + rc = ipv4_connect(tcp_ses); } if (rc < 0) { cERROR(1, ("Error connecting to socket. Aborting operation")); @@ -1735,93 +1721,96 @@ 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, - bool noblocksnd, bool noautotune) +ipv4_connect(struct TCP_Server_Info *server) { int rc = 0; - int connected = 0; + bool connected = false; __be16 orig_port = 0; + struct socket *socket = server->ssocket; - if (*csocket == NULL) { + if (socket == NULL) { rc = sock_create_kern(PF_INET, SOCK_STREAM, - IPPROTO_TCP, csocket); + IPPROTO_TCP, &socket); if (rc < 0) { cERROR(1, ("Error %d creating socket", rc)); - *csocket = NULL; return rc; - } else { - /* BB other socket options to set KEEPALIVE, NODELAY? */ - cFYI(1, ("Socket created")); - (*csocket)->sk->sk_allocation = GFP_NOFS; - cifs_reclassify_socket4(*csocket); } + + /* BB other socket options to set KEEPALIVE, NODELAY? */ + cFYI(1, ("Socket created")); + server->ssocket = socket; + socket->sk->sk_allocation = GFP_NOFS; + cifs_reclassify_socket4(socket); } - psin_server->sin_family = AF_INET; - if (psin_server->sin_port) { /* user overrode default port */ - rc = (*csocket)->ops->connect(*csocket, - (struct sockaddr *) psin_server, - sizeof(struct sockaddr_in), 0); + /* user overrode default port */ + if (server->addr.sockAddr.sin_port) { + rc = socket->ops->connect(socket, (struct sockaddr *) + &server->addr.sockAddr, + sizeof(struct sockaddr_in), 0); if (rc >= 0) - connected = 1; + connected = true; } if (!connected) { /* save original port so we can retry user specified port later if fall back ports fail this time */ - orig_port = psin_server->sin_port; + orig_port = server->addr.sockAddr.sin_port; /* do not retry on the same port we just failed on */ - if (psin_server->sin_port != htons(CIFS_PORT)) { - psin_server->sin_port = htons(CIFS_PORT); - - rc = (*csocket)->ops->connect(*csocket, - (struct sockaddr *) psin_server, - sizeof(struct sockaddr_in), 0); + if (server->addr.sockAddr.sin_port != htons(CIFS_PORT)) { + server->addr.sockAddr.sin_port = htons(CIFS_PORT); + rc = socket->ops->connect(socket, + (struct sockaddr *) + &server->addr.sockAddr, + sizeof(struct sockaddr_in), 0); if (rc >= 0) - connected = 1; + connected = true; } } if (!connected) { - psin_server->sin_port = htons(RFC1001_PORT); - rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) - psin_server, + server->addr.sockAddr.sin_port = htons(RFC1001_PORT); + rc = socket->ops->connect(socket, (struct sockaddr *) + &server->addr.sockAddr, sizeof(struct sockaddr_in), 0); if (rc >= 0) - connected = 1; + connected = true; } /* give up here - unless we want to retry on different protocol families some day */ if (!connected) { if (orig_port) - psin_server->sin_port = orig_port; + server->addr.sockAddr.sin_port = orig_port; cFYI(1, ("Error %d connecting to server via ipv4", rc)); - sock_release(*csocket); - *csocket = NULL; + sock_release(socket); + server->ssocket = NULL; return rc; } - /* Eventually check for other socket options to change from - the default. sock_setsockopt not used because it expects - user space buffer */ - cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", - (*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; + + + /* + * Eventually check for other socket options to change from + * the default. sock_setsockopt not used because it expects + * user space buffer + */ + socket->sk->sk_rcvtimeo = 7 * HZ; + socket->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; + if (server->noautotune) { + if (socket->sk->sk_sndbuf < (200 * 1024)) + socket->sk->sk_sndbuf = 200 * 1024; + if (socket->sk->sk_rcvbuf < (140 * 1024)) + socket->sk->sk_rcvbuf = 140 * 1024; } + cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", + socket->sk->sk_sndbuf, + socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo)); + /* send RFC1001 sessinit */ - if (psin_server->sin_port == htons(RFC1001_PORT)) { + if (server->addr.sockAddr.sin_port == htons(RFC1001_PORT)) { /* some servers require RFC1001 sessinit before sending negprot - BB check reconnection in case where second sessinit is sent but no second negprot */ @@ -1831,39 +1820,42 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, GFP_KERNEL); if (ses_init_buf) { ses_init_buf->trailer.session_req.called_len = 32; - if (target_name && (target_name[0] != 0)) { + if (server->server_RFC1001_name && + server->server_RFC1001_name[0] != 0) rfc1002mangle(ses_init_buf->trailer. session_req.called_name, - target_name, + server->server_RFC1001_name, RFC1001_NAME_LEN_WITH_NULL); - } else { + else rfc1002mangle(ses_init_buf->trailer. session_req.called_name, DEFAULT_CIFS_CALLED_NAME, RFC1001_NAME_LEN_WITH_NULL); - } ses_init_buf->trailer.session_req.calling_len = 32; + /* calling name ends in null (byte 16) from old smb convention. */ - if (netbios_name && (netbios_name[0] != 0)) { + if (server->workstation_RFC1001_name && + server->workstation_RFC1001_name[0] != 0) rfc1002mangle(ses_init_buf->trailer. session_req.calling_name, - netbios_name, + server->workstation_RFC1001_name, RFC1001_NAME_LEN_WITH_NULL); - } else { + else rfc1002mangle(ses_init_buf->trailer. session_req.calling_name, "LINUX_CIFS_CLNT", RFC1001_NAME_LEN_WITH_NULL); - } + ses_init_buf->trailer.session_req.scope1 = 0; ses_init_buf->trailer.session_req.scope2 = 0; smb_buf = (struct smb_hdr *)ses_init_buf; /* sizeof RFC1002_SESSION_REQUEST with no scope */ smb_buf->smb_buf_length = 0x81000044; - rc = smb_send(*csocket, smb_buf, 0x44, - (struct sockaddr *)psin_server, noblocksnd); + rc = smb_send(socket, smb_buf, 0x44, + (struct sockaddr *) &server->addr.sockAddr, + server->noblocksnd); kfree(ses_init_buf); msleep(1); /* RFC1001 layer in at least one server requires very short break before negprot -- cgit v1.2.3-70-g09d2 From d5c5605c27c92dac6de1a7a658af5b030847f949 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 1 Dec 2008 18:42:33 -0500 Subject: cifs: make ipv6_connect take a TCP_Server_Info arg Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 103 ++++++++++++++++++++++++++---------------------------- 1 file changed, 50 insertions(+), 53 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index a36f4bd5a76..d6a3c1c8a6f 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -102,19 +102,16 @@ struct smb_vol { }; static int ipv4_connect(struct TCP_Server_Info *server); -static int ipv6_connect(struct sockaddr_in6 *psin_server, - struct socket **csocket, bool noblocksnd); - - - /* - * cifs tcp session reconnection - * - * mark tcp session as reconnecting so temporarily locked - * mark all smb sessions as reconnecting for tcp session - * reconnect tcp session - * wake up waiters on reconnection? - (not needed currently) - */ +static int ipv6_connect(struct TCP_Server_Info *server); +/* + * cifs tcp session reconnection + * + * mark tcp session as reconnecting so temporarily locked + * mark all smb sessions as reconnecting for tcp session + * reconnect tcp session + * wake up waiters on reconnection? - (not needed currently) + */ static int cifs_reconnect(struct TCP_Server_Info *server) { @@ -183,8 +180,7 @@ cifs_reconnect(struct TCP_Server_Info *server) (server->tcpStatus != CifsGood)) { try_to_freeze(); if (server->addr.sockAddr6.sin6_family == AF_INET6) - rc = ipv6_connect(&server->addr.sockAddr6, - &server->ssocket, server->noautotune); + rc = ipv6_connect(server); else rc = ipv4_connect(server); if (rc) { @@ -1501,8 +1497,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info) memcpy(&tcp_ses->addr.sockAddr6, sin_server6, sizeof(struct sockaddr_in6)); sin_server6->sin6_port = htons(volume_info->port); - rc = ipv6_connect(sin_server6, &tcp_ses->ssocket, - volume_info->noblocksnd); + rc = ipv6_connect(tcp_ses); } else { memcpy(&tcp_ses->addr.sockAddr, sin_server, sizeof(struct sockaddr_in)); @@ -1875,79 +1870,81 @@ ipv4_connect(struct TCP_Server_Info *server) } static int -ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket, - bool noblocksnd) +ipv6_connect(struct TCP_Server_Info *server) { int rc = 0; - int connected = 0; + bool connected = false; __be16 orig_port = 0; + struct socket *socket = server->ssocket; - if (*csocket == NULL) { + if (socket == NULL) { rc = sock_create_kern(PF_INET6, SOCK_STREAM, - IPPROTO_TCP, csocket); + IPPROTO_TCP, &socket); if (rc < 0) { cERROR(1, ("Error %d creating ipv6 socket", rc)); - *csocket = NULL; + socket = NULL; return rc; - } else { - /* BB other socket options to set KEEPALIVE, NODELAY? */ - cFYI(1, ("ipv6 Socket created")); - (*csocket)->sk->sk_allocation = GFP_NOFS; - cifs_reclassify_socket6(*csocket); } - } - psin_server->sin6_family = AF_INET6; + /* BB other socket options to set KEEPALIVE, NODELAY? */ + cFYI(1, ("ipv6 Socket created")); + server->ssocket = socket; + socket->sk->sk_allocation = GFP_NOFS; + cifs_reclassify_socket6(socket); + } - if (psin_server->sin6_port) { /* user overrode default port */ - rc = (*csocket)->ops->connect(*csocket, - (struct sockaddr *) psin_server, + /* user overrode default port */ + if (server->addr.sockAddr6.sin6_port) { + rc = socket->ops->connect(socket, + (struct sockaddr *) &server->addr.sockAddr6, sizeof(struct sockaddr_in6), 0); if (rc >= 0) - connected = 1; + connected = true; } if (!connected) { /* save original port so we can retry user specified port later if fall back ports fail this time */ - orig_port = psin_server->sin6_port; + orig_port = server->addr.sockAddr6.sin6_port; /* do not retry on the same port we just failed on */ - if (psin_server->sin6_port != htons(CIFS_PORT)) { - psin_server->sin6_port = htons(CIFS_PORT); - - rc = (*csocket)->ops->connect(*csocket, - (struct sockaddr *) psin_server, + if (server->addr.sockAddr6.sin6_port != htons(CIFS_PORT)) { + server->addr.sockAddr6.sin6_port = htons(CIFS_PORT); + rc = socket->ops->connect(socket, (struct sockaddr *) + &server->addr.sockAddr6, sizeof(struct sockaddr_in6), 0); if (rc >= 0) - connected = 1; + connected = true; } } if (!connected) { - psin_server->sin6_port = htons(RFC1001_PORT); - rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) - psin_server, sizeof(struct sockaddr_in6), 0); + server->addr.sockAddr6.sin6_port = htons(RFC1001_PORT); + rc = socket->ops->connect(socket, (struct sockaddr *) + &server->addr.sockAddr6, + sizeof(struct sockaddr_in6), 0); if (rc >= 0) - connected = 1; + connected = true; } /* give up here - unless we want to retry on different protocol families some day */ if (!connected) { if (orig_port) - psin_server->sin6_port = orig_port; + server->addr.sockAddr6.sin6_port = orig_port; cFYI(1, ("Error %d connecting to server via ipv6", rc)); - sock_release(*csocket); - *csocket = NULL; + sock_release(socket); + server->ssocket = NULL; return rc; } - /* Eventually check for other socket options to change from - 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; + /* + * Eventually check for other socket options to change from + * the default. sock_setsockopt not used because it expects + * user space buffer + */ + socket->sk->sk_rcvtimeo = 7 * HZ; + socket->sk->sk_sndtimeo = 3 * HZ; + server->ssocket = socket; return rc; } -- cgit v1.2.3-70-g09d2 From 13a6e42af8d90e2e8eb7fa50adf862a525b70518 Mon Sep 17 00:00:00 2001 From: Steve French Date: Tue, 2 Dec 2008 17:24:33 +0000 Subject: [CIFS] add mount option to send mandatory rather than advisory locks Some applications/subsystems require mandatory byte range locks (as is used for Windows/DOS/OS2 etc). Sending advisory (posix style) byte range lock requests (instead of mandatory byte range locks) can lead to problems for these applications (which expect that other clients be prevented from writing to portions of the file which they have locked and are updating). This mount option allows mounting cifs with the new mount option "forcemand" (or "forcemandatorylock") in order to have the cifs client use mandatory byte range locks (ie SMB/CIFS/Windows/NTFS style locks) rather than posix byte range lock requests, even if the server would support posix byte range lock requests. This has no effect if the server does not support the CIFS Unix Extensions (since posix style locks require support for the CIFS Unix Extensions), but for mounts to Samba servers this can be helpful for Wine and applications that require mandatory byte range locks. Acked-by: Jeff Layton CC: Alexander Bokovoy Signed-off-by: Steve French --- fs/cifs/CHANGES | 6 ++++++ fs/cifs/README | 12 +++++++++++- fs/cifs/cifs_fs_sb.h | 5 +++-- fs/cifs/cifsfs.h | 2 +- fs/cifs/connect.c | 14 ++++++++++++++ fs/cifs/file.c | 25 +++++++++++++------------ 6 files changed, 48 insertions(+), 16 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES index e078b7aea14..3d848f463c4 100644 --- a/fs/cifs/CHANGES +++ b/fs/cifs/CHANGES @@ -1,3 +1,9 @@ +Version 1.56 +------------ +Add "forcemandatorylock" mount option to allow user to use mandatory +rather than posix (advisory) byte range locks, even though server would +support posix byte range locks. + Version 1.55 ------------ Various fixes to make delete of open files behavior more predictable diff --git a/fs/cifs/README b/fs/cifs/README index a439dc1739b..da4515e3be2 100644 --- a/fs/cifs/README +++ b/fs/cifs/README @@ -463,9 +463,19 @@ A partial list of the supported mount options follows: with cifs style mandatory byte range locks (and most cifs servers do not yet support requesting advisory byte range locks). + forcemandatorylock Even if the server supports posix (advisory) byte range + locking, send only mandatory lock requests. For some + (presumably rare) applications, originally coded for + DOS/Windows, which require Windows style mandatory byte range + locking, they may be able to take advantage of this option, + forcing the cifs client to only send mandatory locks + even if the cifs server would support posix advisory locks. + "forcemand" is accepted as a shorter form of this mount + option. nodfs Disable DFS (global name space support) even if the server claims to support it. This can help work around - a problem with parsing of DFS paths with Samba 3.0.24 server. + a problem with parsing of DFS paths with Samba server + versions 3.0.24 and 3.0.25. remount remount the share (often used to change from ro to rw mounts or vice versa) cifsacl Report mode bits (e.g. on stat) based on the Windows ACL for diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h index 877c85409f1..5edd5cc415a 100644 --- a/fs/cifs/cifs_fs_sb.h +++ b/fs/cifs/cifs_fs_sb.h @@ -20,7 +20,7 @@ #define CIFS_MOUNT_NO_PERM 1 /* do not do client vfs_perm check */ #define CIFS_MOUNT_SET_UID 2 /* set current->euid in create etc. */ -#define CIFS_MOUNT_SERVER_INUM 4 /* inode numbers from uniqueid from server */ +#define CIFS_MOUNT_SERVER_INUM 4 /* inode numbers from uniqueid from server */ #define CIFS_MOUNT_DIRECT_IO 8 /* do not write nor read through page cache */ #define CIFS_MOUNT_NO_XATTR 0x10 /* if set - disable xattr support */ #define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames */ @@ -30,7 +30,8 @@ #define CIFS_MOUNT_CIFS_ACL 0x200 /* send ACL requests to non-POSIX srv */ #define CIFS_MOUNT_OVERR_UID 0x400 /* override uid returned from server */ #define CIFS_MOUNT_OVERR_GID 0x800 /* override gid returned from server */ -#define CIFS_MOUNT_DYNPERM 0x1000 /* allow in-memory only mode setting */ +#define CIFS_MOUNT_DYNPERM 0x1000 /* allow in-memory only mode setting */ +#define CIFS_MOUNT_NOPOSIXBRL 0x2000 /* mandatory not posix byte range lock */ struct cifs_sb_info { struct cifsTconInfo *tcon; /* primary mount */ diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index 074de0b5064..fb676076946 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -101,5 +101,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); extern const struct export_operations cifs_export_ops; #endif /* EXPERIMENTAL */ -#define CIFS_VERSION "1.55" +#define CIFS_VERSION "1.5666666" #endif /* _CIFSFS_H */ diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index d6a3c1c8a6f..35194204283 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -89,6 +89,7 @@ struct smb_vol { bool nullauth:1; /* attempt to authenticate with null user */ bool nocase:1; /* request case insensitive filenames */ bool nobrl:1; /* disable sending byte range locks to srv */ + bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ bool seal:1; /* request transport encryption on share */ bool nodfs:1; /* Do not request DFS, even if available */ bool local_lease:1; /* check leases only on local system, not remote */ @@ -1246,6 +1247,17 @@ cifs_parse_mount_options(char *options, const char *devname, if (vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP))) vol->file_mode = S_IALLUGO; + } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { + /* will take the shorter form "forcemand" as well */ + /* This mount option will force use of mandatory + (DOS/Windows style) byte range locks, instead of + using posix advisory byte range locks, even if the + Unix extensions are available and posix locks would + be supported otherwise. If Unix extensions are not + negotiated this has no effect since mandatory locks + would be used (mandatory locks is all that those + those servers support) */ + vol->mand_lock = 1; } else if (strnicmp(data, "setuids", 7) == 0) { vol->setuids = 1; } else if (strnicmp(data, "nosetuids", 9) == 0) { @@ -2150,6 +2162,8 @@ static void setup_cifs_sb(struct smb_vol *pvolume_info, 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->mand_lock) + cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL; if (pvolume_info->cifs_acl) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; if (pvolume_info->override_uid) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index f0a81e631ae..babd27a4699 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -644,10 +644,10 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) __u64 length; bool wait_flag = false; struct cifs_sb_info *cifs_sb; - struct cifsTconInfo *pTcon; + struct cifsTconInfo *tcon; __u16 netfid; __u8 lockType = LOCKING_ANDX_LARGE_FILES; - bool posix_locking; + bool posix_locking = 0; length = 1 + pfLock->fl_end - pfLock->fl_start; rc = -EACCES; @@ -698,7 +698,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) cFYI(1, ("Unknown type of lock")); cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); - pTcon = cifs_sb->tcon; + tcon = cifs_sb->tcon; if (file->private_data == NULL) { FreeXid(xid); @@ -706,9 +706,10 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) } netfid = ((struct cifsFileInfo *)file->private_data)->netfid; - posix_locking = (cifs_sb->tcon->ses->capabilities & CAP_UNIX) && - (CIFS_UNIX_FCNTL_CAP & le64_to_cpu(cifs_sb->tcon->fsUnixInfo.Capability)); - + if ((tcon->ses->capabilities & CAP_UNIX) && + (CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) && + (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL == 0)) + posix_locking = 1; /* BB add code here to normalize offset and length to account for negative length which we can not accept over the wire */ @@ -719,7 +720,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) posix_lock_type = CIFS_RDLCK; else posix_lock_type = CIFS_WRLCK; - rc = CIFSSMBPosixLock(xid, pTcon, netfid, 1 /* get */, + rc = CIFSSMBPosixLock(xid, tcon, netfid, 1 /* get */, length, pfLock, posix_lock_type, wait_flag); FreeXid(xid); @@ -727,10 +728,10 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) } /* BB we could chain these into one lock request BB */ - rc = CIFSSMBLock(xid, pTcon, netfid, length, pfLock->fl_start, + rc = CIFSSMBLock(xid, tcon, netfid, length, pfLock->fl_start, 0, 1, lockType, 0 /* wait flag */ ); if (rc == 0) { - rc = CIFSSMBLock(xid, pTcon, netfid, length, + rc = CIFSSMBLock(xid, tcon, netfid, length, pfLock->fl_start, 1 /* numUnlock */ , 0 /* numLock */ , lockType, 0 /* wait flag */ ); @@ -767,7 +768,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) if (numUnlock == 1) posix_lock_type = CIFS_UNLCK; - rc = CIFSSMBPosixLock(xid, pTcon, netfid, 0 /* set */, + rc = CIFSSMBPosixLock(xid, tcon, netfid, 0 /* set */, length, pfLock, posix_lock_type, wait_flag); } else { @@ -775,7 +776,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) (struct cifsFileInfo *)file->private_data; if (numLock) { - rc = CIFSSMBLock(xid, pTcon, netfid, length, + rc = CIFSSMBLock(xid, tcon, netfid, length, pfLock->fl_start, 0, numLock, lockType, wait_flag); @@ -796,7 +797,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock) if (pfLock->fl_start <= li->offset && (pfLock->fl_start + length) >= (li->offset + li->length)) { - stored_rc = CIFSSMBLock(xid, pTcon, + stored_rc = CIFSSMBLock(xid, tcon, netfid, li->length, li->offset, 1, 0, li->type, false); -- cgit v1.2.3-70-g09d2 From 61e748015866e48aff91284e3d300c6e3035a87a Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 3 Dec 2008 00:57:54 +0000 Subject: [CIFS] various minor cleanups pointed out by checkpatch script Signed-off-by: Steve French --- fs/cifs/AUTHORS | 2 ++ fs/cifs/cifsfs.c | 19 +++++++------------ fs/cifs/cifspdu.h | 2 +- fs/cifs/cifssmb.c | 16 ++++++++-------- fs/cifs/connect.c | 18 +++++++----------- fs/cifs/dir.c | 9 ++++----- 6 files changed, 29 insertions(+), 37 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/AUTHORS b/fs/cifs/AUTHORS index 9c136d7803d..7f7fa3c302a 100644 --- a/fs/cifs/AUTHORS +++ b/fs/cifs/AUTHORS @@ -36,7 +36,9 @@ Miklos Szeredi Kazeon team for various fixes especially for 2.4 version. Asser Ferno (Change Notify support) Shaggy (Dave Kleikamp) for inumerable small fs suggestions and some good cleanup +Gunter Kukkukk (testing and suggestions for support of old servers) Igor Mammedov (DFS support) +Jeff Layton (many, many fixes, as well as great work on the cifs Kerberos code) Test case and Bug Report contributors ------------------------------------- diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 061a1dca987..974c8f0e615 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -347,7 +347,6 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m) if (cifs_sb) { tcon = cifs_sb->tcon; if (tcon) { -/* BB add prepath to mount options displayed */ seq_printf(s, ",unc=%s", cifs_sb->tcon->treeName); if (tcon->ses) { if (tcon->ses->userName) @@ -439,9 +438,8 @@ int cifs_xquota_set(struct super_block *sb, int quota_type, qid_t qid, xid = GetXid(); if (pTcon) { cFYI(1, ("set type: 0x%x id: %d", quota_type, qid)); - } else { + } else rc = -EIO; - } FreeXid(xid); return rc; @@ -463,9 +461,8 @@ int cifs_xquota_get(struct super_block *sb, int quota_type, qid_t qid, xid = GetXid(); if (pTcon) { cFYI(1, ("set type: 0x%x id: %d", quota_type, qid)); - } else { + } else rc = -EIO; - } FreeXid(xid); return rc; @@ -486,9 +483,8 @@ int cifs_xstate_set(struct super_block *sb, unsigned int flags, int operation) xid = GetXid(); if (pTcon) { cFYI(1, ("flags: 0x%x operation: 0x%x", flags, operation)); - } else { + } else rc = -EIO; - } FreeXid(xid); return rc; @@ -501,17 +497,16 @@ int cifs_xstate_get(struct super_block *sb, struct fs_quota_stat *qstats) struct cifs_sb_info *cifs_sb = CIFS_SB(sb); struct cifsTconInfo *pTcon; - if (cifs_sb) { + if (cifs_sb) pTcon = cifs_sb->tcon; - } else { + else return -EIO; - } + xid = GetXid(); if (pTcon) { cFYI(1, ("pqstats %p", qstats)); - } else { + } else rc = -EIO; - } FreeXid(xid); return rc; diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h index d2a073edd1b..b4e2e9f0ee3 100644 --- a/fs/cifs/cifspdu.h +++ b/fs/cifs/cifspdu.h @@ -1922,7 +1922,7 @@ typedef struct smb_com_transaction2_get_dfs_refer_req { /* DFS server target type */ #define DFS_TYPE_LINK 0x0000 /* also for sysvol targets */ #define DFS_TYPE_ROOT 0x0001 - + /* Referral Entry Flags */ #define DFS_NAME_LIST_REF 0x0200 diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 6d51696dc76..ef9786b6bea 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1382,13 +1382,13 @@ openRetry: if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) *pOplock |= CIFS_CREATE_ACTION; if (pfile_info) { - memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, - 36 /* CreationTime to Attributes */); - /* the file_info buf is endian converted by caller */ - pfile_info->AllocationSize = pSMBr->AllocationSize; - pfile_info->EndOfFile = pSMBr->EndOfFile; - pfile_info->NumberOfLinks = cpu_to_le32(1); - pfile_info->DeletePending = 0; + memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, + 36 /* CreationTime to Attributes */); + /* the file_info buf is endian converted by caller */ + pfile_info->AllocationSize = pSMBr->AllocationSize; + pfile_info->EndOfFile = pSMBr->EndOfFile; + pfile_info->NumberOfLinks = cpu_to_le32(1); + pfile_info->DeletePending = 0; } } @@ -1558,7 +1558,7 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, pSMB->DataOffset = cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); if (buf) - memcpy(pSMB->Data, buf, bytes_sent); + memcpy(pSMB->Data, buf, bytes_sent); else if (ubuf) { if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { cifs_buf_release(pSMB); diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 35194204283..6107ee42b09 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2582,7 +2582,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, __u16 action = le16_to_cpu(pSMBr->resp.Action); __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); if (action & GUEST_LOGIN) - cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ + cFYI(1, ("Guest login")); /* BB mark SesInfo struct? */ ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (little endian) */ cFYI(1, ("UID = %d ", ses->Suid)); @@ -2728,13 +2728,11 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, len)); } } else { - cERROR(1, - (" Security Blob Length extends beyond " + cERROR(1, ("Security Blob Length extends beyond " "end of SMB")); } } else { - cERROR(1, - (" Invalid Word count %d: ", + cERROR(1, ("Invalid Word count %d: ", smb_buffer_response->WordCount)); rc = -EIO; } @@ -2892,7 +2890,7 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); if (action & GUEST_LOGIN) - cFYI(1, (" Guest login")); + cFYI(1, ("Guest login")); /* Do we want to set anything in SesInfo struct when guest login? */ bcc_ptr = pByteArea(smb_buffer_response); @@ -2900,8 +2898,7 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; if (SecurityBlob2->MessageType != NtLmChallenge) { - cFYI(1, - ("Unexpected NTLMSSP message type received %d", + cFYI(1, ("Unexpected NTLMSSP message type received %d", SecurityBlob2->MessageType)); } else if (ses) { ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ @@ -3073,8 +3070,7 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, cERROR(1, ("No session structure passed in.")); } } else { - cERROR(1, - (" Invalid Word count %d:", + cERROR(1, ("Invalid Word count %d:", smb_buffer_response->WordCount)); rc = -EIO; } @@ -3313,7 +3309,7 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, __u16 action = le16_to_cpu(pSMBr->resp.Action); __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); if (action & GUEST_LOGIN) - cFYI(1, (" Guest login")); /* BB Should we set anything + cFYI(1, ("Guest login")); /* BB Should we set anything in SesInfo struct ? */ /* if (SecurityBlob2->MessageType != NtLm??) { cFYI("Unexpected message type on auth response is %d")); diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index e962e75e6f7..0592dbb3a6b 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -483,7 +483,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, xid = GetXid(); - cFYI(1, (" parent inode = 0x%p name is: %s and dentry = 0x%p", + cFYI(1, ("parent inode = 0x%p name is: %s and dentry = 0x%p", parent_dir_inode, direntry->d_name.name, direntry)); /* check whether path exists */ @@ -515,12 +515,11 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, } if (direntry->d_inode != NULL) { - cFYI(1, (" non-NULL inode in lookup")); + cFYI(1, ("non-NULL inode in lookup")); } else { - cFYI(1, (" NULL inode in lookup")); + cFYI(1, ("NULL inode in lookup")); } - cFYI(1, - (" Full path: %s inode = 0x%p", full_path, direntry->d_inode)); + cFYI(1, ("Full path: %s inode = 0x%p", full_path, direntry->d_inode)); if (pTcon->unix_ext) rc = cifs_get_inode_info_unix(&newInode, full_path, -- cgit v1.2.3-70-g09d2 From 4e53a3fb98d3d5c2941d2e7199dab317a9d4ead3 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 5 Dec 2008 20:41:21 -0500 Subject: cifs: have calc_lanman_hash take more granular args cifs: have calc_lanman_hash take more granular args We need to use this routine to encrypt passwords associated with the tcon too. Don't assume that the password will be attached to the smb_session. Also, make some of the values in the lower encryption functions const since they aren't changed. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifsencrypt.c | 30 ++++++++++++++---------------- fs/cifs/cifsencrypt.h | 3 ++- fs/cifs/cifsproto.h | 3 ++- fs/cifs/connect.c | 5 ++++- fs/cifs/sess.c | 5 ++++- fs/cifs/smbdes.c | 5 +++-- fs/cifs/smbencrypt.c | 9 +++++---- 7 files changed, 34 insertions(+), 26 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index bd5f13d3845..d4839cf0cb2 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -37,7 +37,7 @@ extern void mdfour(unsigned char *out, unsigned char *in, int n); extern void E_md4hash(const unsigned char *passwd, unsigned char *p16); -extern void SMBencrypt(unsigned char *passwd, unsigned char *c8, +extern void SMBencrypt(unsigned char *passwd, const unsigned char *c8, unsigned char *p24); static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu, @@ -280,25 +280,22 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo *ses, } #ifdef CONFIG_CIFS_WEAK_PW_HASH -void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key) +void calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt, + char *lnm_session_key) { int i; char password_with_pad[CIFS_ENCPWD_SIZE]; - if (ses->server == NULL) - return; - memset(password_with_pad, 0, CIFS_ENCPWD_SIZE); - if (ses->password) - strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE); - - if ((ses->server->secMode & SECMODE_PW_ENCRYPT) == 0) - if (extended_security & CIFSSEC_MAY_PLNTXT) { - memset(lnm_session_key, 0, CIFS_SESS_KEY_SIZE); - memcpy(lnm_session_key, password_with_pad, - CIFS_ENCPWD_SIZE); - return; - } + if (password) + strncpy(password_with_pad, password, CIFS_ENCPWD_SIZE); + + if (!encrypt && extended_security & CIFSSEC_MAY_PLNTXT) { + memset(lnm_session_key, 0, CIFS_SESS_KEY_SIZE); + memcpy(lnm_session_key, password_with_pad, + CIFS_ENCPWD_SIZE); + return; + } /* calculate old style session key */ /* calling toupper is less broken than repeatedly @@ -314,7 +311,8 @@ void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key) for (i = 0; i < CIFS_ENCPWD_SIZE; i++) password_with_pad[i] = toupper(password_with_pad[i]); - SMBencrypt(password_with_pad, ses->server->cryptKey, lnm_session_key); + SMBencrypt(password_with_pad, cryptkey, lnm_session_key); + /* clear password before we return/free memory */ memset(password_with_pad, 0, CIFS_ENCPWD_SIZE); } diff --git a/fs/cifs/cifsencrypt.h b/fs/cifs/cifsencrypt.h index 152fa2dcfc6..15d2ec00647 100644 --- a/fs/cifs/cifsencrypt.h +++ b/fs/cifs/cifsencrypt.h @@ -26,7 +26,8 @@ extern void mdfour(unsigned char *out, unsigned char *in, int n); /* smbdes.c */ extern void E_P16(unsigned char *p14, unsigned char *p16); -extern void E_P24(unsigned char *p21, unsigned char *c8, unsigned char *p24); +extern void E_P24(unsigned char *p21, const unsigned char *c8, + unsigned char *p24); diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 6f21ecb85ce..f4861653607 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -330,7 +330,8 @@ extern void CalcNTLMv2_response(const struct cifsSesInfo *, char *); extern void setup_ntlmv2_rsp(struct cifsSesInfo *, char *, const struct nls_table *); #ifdef CONFIG_CIFS_WEAK_PW_HASH -extern void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key); +extern void calc_lanman_hash(const char *password, const char *cryptkey, + bool encrypt, char *lnm_session_key); #endif /* CIFS_WEAK_PW_HASH */ extern int CIFSSMBCopy(int xid, struct cifsTconInfo *source_tcon, diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 6107ee42b09..3a84a375cb6 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3533,7 +3533,10 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, #ifdef CONFIG_CIFS_WEAK_PW_HASH if ((extended_security & CIFSSEC_MAY_LANMAN) && (ses->server->secType == LANMAN)) - calc_lanman_hash(ses, bcc_ptr); + calc_lanman_hash(ses->password, ses->server->cryptKey, + ses->server->secMode & + SECMODE_PW_ENCRYPT ? true : false, + bcc_ptr); else #endif /* CIFS_WEAK_PW_HASH */ SMBNTencrypt(ses->password, diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index 2851d5da0c8..5f22de7b79a 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -417,7 +417,10 @@ CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time, /* BB calculate hash with password */ /* and copy into bcc */ - calc_lanman_hash(ses, lnm_session_key); + calc_lanman_hash(ses->password, ses->server->cryptKey, + ses->server->secMode & SECMODE_PW_ENCRYPT ? + true : false, lnm_session_key); + ses->flags |= CIFS_SES_LANMAN; memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE); bcc_ptr += CIFS_SESS_KEY_SIZE; diff --git a/fs/cifs/smbdes.c b/fs/cifs/smbdes.c index 04943c976f9..224a1f47896 100644 --- a/fs/cifs/smbdes.c +++ b/fs/cifs/smbdes.c @@ -318,7 +318,8 @@ str_to_key(unsigned char *str, unsigned char *key) } static void -smbhash(unsigned char *out, unsigned char *in, unsigned char *key, int forw) +smbhash(unsigned char *out, const unsigned char *in, unsigned char *key, + int forw) { int i; char *outb; /* outb[64] */ @@ -363,7 +364,7 @@ E_P16(unsigned char *p14, unsigned char *p16) } void -E_P24(unsigned char *p21, unsigned char *c8, unsigned char *p24) +E_P24(unsigned char *p21, const unsigned char *c8, unsigned char *p24) { smbhash(p24, c8, p21, 1); smbhash(p24 + 8, c8, p21 + 7, 1); diff --git a/fs/cifs/smbencrypt.c b/fs/cifs/smbencrypt.c index ff3232fa101..93fb09a99c6 100644 --- a/fs/cifs/smbencrypt.c +++ b/fs/cifs/smbencrypt.c @@ -49,9 +49,10 @@ /*The following definitions come from libsmb/smbencrypt.c */ -void SMBencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24); +void SMBencrypt(unsigned char *passwd, const unsigned char *c8, + unsigned char *p24); void E_md4hash(const unsigned char *passwd, unsigned char *p16); -static void SMBOWFencrypt(unsigned char passwd[16], unsigned char *c8, +static void SMBOWFencrypt(unsigned char passwd[16], const unsigned char *c8, unsigned char p24[24]); void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24); @@ -61,7 +62,7 @@ void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24); encrypted password into p24 */ /* Note that password must be uppercased and null terminated */ void -SMBencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24) +SMBencrypt(unsigned char *passwd, const unsigned char *c8, unsigned char *p24) { unsigned char p14[15], p21[21]; @@ -212,7 +213,7 @@ ntv2_owf_gen(const unsigned char owf[16], const char *user_n, /* Does the des encryption from the NT or LM MD4 hash. */ static void -SMBOWFencrypt(unsigned char passwd[16], unsigned char *c8, +SMBOWFencrypt(unsigned char passwd[16], const unsigned char *c8, unsigned char p24[24]) { unsigned char p21[21]; -- cgit v1.2.3-70-g09d2 From 00e485b0198ea4f509341373f1d9adb0a5977a2f Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 5 Dec 2008 20:41:21 -0500 Subject: cifs: store password in tcon cifs: store password in tcon Each tcon has its own password for share-level security. Store it in the tcon and wipe it clean and free it when freeing the tcon. When doing the tree connect with share-level security, use the tcon password instead of the session password. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifsglob.h | 1 + fs/cifs/connect.c | 25 ++++++++++++++++++------- fs/cifs/misc.c | 4 ++++ 3 files changed, 23 insertions(+), 7 deletions(-) (limited to 'fs/cifs/connect.c') diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 0fb934d3623..94c1ca0ec95 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -242,6 +242,7 @@ struct cifsTconInfo { struct cifsSesInfo *ses; /* pointer to session associated with */ char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ char *nativeFileSystem; + char *password; /* for share-level security */ __u16 tid; /* The 2 byte tree id */ __u16 Flags; /* optional support bits */ enum statusEnum tidStatus; diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 3a84a375cb6..3caadf12d76 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2282,9 +2282,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, /* volume_info->password freed at unmount */ if (volume_info->password) { - pSesInfo->password = volume_info->password; - /* set to NULL to prevent freeing on exit */ - volume_info->password = NULL; + pSesInfo->password = kstrdup(volume_info->password, + GFP_KERNEL); + if (!pSesInfo->password) { + rc = -ENOMEM; + goto mount_fail_check; + } } if (volume_info->username) strncpy(pSesInfo->userName, volume_info->username, @@ -2324,7 +2327,16 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, rc = -ENOMEM; goto mount_fail_check; } + tcon->ses = pSesInfo; + if (volume_info->password) { + tcon->password = kstrdup(volume_info->password, + GFP_KERNEL); + if (!tcon->password) { + rc = -ENOMEM; + goto mount_fail_check; + } + } /* check for null share name ie connect to dfs root */ if ((strchr(volume_info->UNC + 3, '\\') == NULL) @@ -3532,15 +3544,14 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, NTLMv2 password here) */ #ifdef CONFIG_CIFS_WEAK_PW_HASH if ((extended_security & CIFSSEC_MAY_LANMAN) && - (ses->server->secType == LANMAN)) - calc_lanman_hash(ses->password, ses->server->cryptKey, + (ses->server->secType == LANMAN)) + calc_lanman_hash(tcon->password, ses->server->cryptKey, ses->server->secMode & SECMODE_PW_ENCRYPT ? true : false, bcc_ptr); else #endif /* CIFS_WEAK_PW_HASH */ - SMBNTencrypt(ses->password, - ses->server->cryptKey, + SMBNTencrypt(tcon->password, ses->server->cryptKey, bcc_ptr); bcc_ptr += CIFS_SESS_KEY_SIZE; diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 7c3f4b9230d..a0513605d7e 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -132,6 +132,10 @@ tconInfoFree(struct cifsTconInfo *buf_to_free) } atomic_dec(&tconInfoAllocCount); kfree(buf_to_free->nativeFileSystem); + if (buf_to_free->password) { + memset(buf_to_free->password, 0, strlen(buf_to_free->password)); + kfree(buf_to_free->password); + } kfree(buf_to_free); } -- cgit v1.2.3-70-g09d2