]> pilppa.org Git - linux-2.6-omap-h63xx.git/blobdiff - fs/cifs/connect.c
gianfar: delete non NAPI code from the driver.
[linux-2.6-omap-h63xx.git] / fs / cifs / connect.c
index 6c4332f8da6c0bd3756897bcd2a8c0835ace61c9..e8fa46c7cff21f82f245e41cbd2cda8f7336d4c7 100644 (file)
@@ -49,8 +49,6 @@
 #define CIFS_PORT 445
 #define RFC1001_PORT 139
 
-static DECLARE_COMPLETION(cifsd_complete);
-
 extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
                         unsigned char *p24);
 
@@ -62,7 +60,7 @@ struct smb_vol {
        char *domainname;
        char *UNC;
        char *UNCip;
-       char *in6_addr;  /* ipv6 address as human readable form of in6_addr */
+       char *in6_addr;   /* ipv6 address as human readable form of in6_addr */
        char *iocharset;  /* local code page for mapping to and from Unicode */
        char source_rfc1001_name[16]; /* netbios name of client */
        char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */
@@ -77,19 +75,21 @@ struct smb_vol {
        bool setuids:1;
        bool override_uid:1;
        bool override_gid:1;
+       bool dynperm:1;
        bool noperm:1;
        bool no_psx_acl:1; /* set if posix acl support should be disabled */
        bool cifs_acl:1;
        bool no_xattr:1;   /* set if xattr (EA) support should be disabled*/
        bool server_ino:1; /* use inode numbers from server ie UniqueId */
        bool direct_io:1;
-       bool remap:1;     /* set to remap seven reserved chars in filenames */
-       bool posix_paths:1;   /* unset to not ask for posix pathnames. */
+       bool remap:1;      /* set to remap seven reserved chars in filenames */
+       bool posix_paths:1; /* unset to not ask for posix pathnames. */
        bool no_linux_ext:1;
        bool sfu_emul:1;
-       bool nullauth:1; /* attempt to authenticate with null user */
-       unsigned nocase;     /* request case insensitive filenames */
-       unsigned nobrl;      /* disable sending byte range locks to srv */
+       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 seal:1;       /* request transport encryption on share */
        unsigned int rsize;
        unsigned int wsize;
        unsigned int sockopt;
@@ -350,13 +350,11 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
        int reconnect;
 
        current->flags |= PF_MEMALLOC;
-       server->tsk = current;  /* save process info to wake at shutdown */
        cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current)));
        write_lock(&GlobalSMBSeslock);
        atomic_inc(&tcpSesAllocCount);
        length = tcpSesAllocCount.counter;
        write_unlock(&GlobalSMBSeslock);
-       complete(&cifsd_complete);
        if (length  > 1)
                mempool_resize(cifs_req_poolp, length + cifs_min_rcv,
                                GFP_KERNEL);
@@ -654,10 +652,21 @@ multi_t2_fnd:
 
        spin_lock(&GlobalMid_Lock);
        server->tcpStatus = CifsExiting;
-       server->tsk = NULL;
+       spin_unlock(&GlobalMid_Lock);
+       wake_up_all(&server->response_q);
+
+       /* don't exit until kthread_stop is called */
+       set_current_state(TASK_UNINTERRUPTIBLE);
+       while (!kthread_should_stop()) {
+               schedule();
+               set_current_state(TASK_UNINTERRUPTIBLE);
+       }
+       set_current_state(TASK_RUNNING);
+
        /* check if we have blocked requests that need to free */
        /* Note that cifs_max_pending is normally 50, but
        can be set at module install time to as little as two */
+       spin_lock(&GlobalMid_Lock);
        if (atomic_read(&server->inFlight) >= cifs_max_pending)
                atomic_set(&server->inFlight, cifs_max_pending - 1);
        /* We do not want to set the max_pending too low or we
@@ -1240,6 +1249,10 @@ cifs_parse_mount_options(char *options, const char *devname,
                        vol->setuids = 1;
                } else if (strnicmp(data, "nosetuids", 9) == 0) {
                        vol->setuids = 0;
+               } else if (strnicmp(data, "dynperm", 7) == 0) {
+                       vol->dynperm = true;
+               } else if (strnicmp(data, "nodynperm", 9) == 0) {
+                       vol->dynperm = false;
                } else if (strnicmp(data, "nohard", 6) == 0) {
                        vol->retry = 0;
                } else if (strnicmp(data, "nosoft", 6) == 0) {
@@ -1262,8 +1275,12 @@ cifs_parse_mount_options(char *options, const char *devname,
                        vol->no_psx_acl = 1;
                } else if (strnicmp(data, "sign", 4) == 0) {
                        vol->secFlg |= CIFSSEC_MUST_SIGN;
-/*             } else if (strnicmp(data, "seal",4) == 0) {
-                       vol->secFlg |= CIFSSEC_MUST_SEAL; */
+               } else if (strnicmp(data, "seal", 4) == 0) {
+                       /* we do not do the following in secFlags because seal
+                          is a per tree connection (mount) not a per socket
+                          or per-smb connection option in the protocol */
+                       /* vol->secFlg |= CIFSSEC_MUST_SEAL; */
+                       vol->seal = 1;
                } else if (strnicmp(data, "direct", 6) == 0) {
                        vol->direct_io = 1;
                } else if (strnicmp(data, "forcedirectio", 13) == 0) {
@@ -1305,6 +1322,9 @@ cifs_parse_mount_options(char *options, const char *devname,
                                                    "begin with // or \\\\ \n");
                                return 1;
                        }
+                       value = strpbrk(vol->UNC+2, "/\\");
+                       if (value)
+                               *value = '\\';
                } else {
                        printk(KERN_WARNING "CIFS: UNC name too long\n");
                        return 1;
@@ -1318,42 +1338,43 @@ cifs_parse_mount_options(char *options, const char *devname,
 
 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)
+                     struct in6_addr *target_ip6_addr,
+                     char *userName, struct TCP_Server_Info **psrvTcp)
 {
        struct list_head *tmp;
        struct cifsSesInfo *ses;
+
        *psrvTcp = NULL;
-       read_lock(&GlobalSMBSeslock);
 
+       read_lock(&GlobalSMBSeslock);
        list_for_each(tmp, &GlobalSMBSessionList) {
                ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
-               if (ses->server) {
-                       if ((target_ip_addr &&
-                               (ses->server->addr.sockAddr.sin_addr.s_addr
-                                 == target_ip_addr->s_addr)) || (target_ip6_addr
-                               && memcmp(&ses->server->addr.sockAddr6.sin6_addr,
-                                       target_ip6_addr, sizeof(*target_ip6_addr)))) {
-                               /* BB lock server and tcp session and 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;
-                               }
-                       }
+               if (!ses->server)
+                       continue;
+
+               if (target_ip_addr &&
+                   ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr)
+                               continue;
+               else if (target_ip6_addr &&
+                        memcmp(&ses->server->addr.sockAddr6.sin6_addr,
+                               target_ip6_addr, sizeof(*target_ip6_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;
                }
                /* else tcp and smb sessions need reconnection */
        }
        read_unlock(&GlobalSMBSeslock);
+
        return NULL;
 }
 
@@ -1362,68 +1383,45 @@ find_unc(__be32 new_target_ip_addr, char *uncName, char *userName)
 {
        struct list_head *tmp;
        struct cifsTconInfo *tcon;
+       __be32 old_ip;
 
        read_lock(&GlobalSMBSeslock);
+
        list_for_each(tmp, &GlobalTreeConnectionList) {
                cFYI(1, ("Next tcon"));
                tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
-               if (tcon->ses) {
-                       if (tcon->ses->server) {
-                               cFYI(1,
-                                    ("old ip addr: %x == new ip %x ?",
-                                     tcon->ses->server->addr.sockAddr.sin_addr.
-                                     s_addr, new_target_ip_addr));
-                               if (tcon->ses->server->addr.sockAddr.sin_addr.
-                                   s_addr == new_target_ip_addr) {
-       /* BB lock tcon, server and tcp session and increment use count here? */
-                                       /* found a match on the TCP session */
-                                       /* BB check if reconnection needed */
-                                       cFYI(1,
-                                             ("IP match, old UNC: %s new: %s",
-                                             tcon->treeName, uncName));
-                                       if (strncmp
-                                           (tcon->treeName, uncName,
-                                            MAX_TREE_SIZE) == 0) {
-                                               cFYI(1,
-                                                    ("and old usr: %s new: %s",
-                                                     tcon->treeName, uncName));
-                                               if (strncmp
-                                                   (tcon->ses->userName,
-                                                    userName,
-                                                    MAX_USERNAME_SIZE) == 0) {
-                                                       read_unlock(&GlobalSMBSeslock);
-                                                       /* matched smb session
-                                                       (user name */
-                                                       return tcon;
-                                               }
-                                       }
-                               }
-                       }
-               }
-       }
-       read_unlock(&GlobalSMBSeslock);
-       return NULL;
-}
+               if (!tcon->ses || !tcon->ses->server)
+                       continue;
 
-int
-connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
-                   const char *old_path, const struct nls_table *nls_codepage,
-                   int remap)
-{
-       struct dfs_info3_param *referrals = NULL;
-       unsigned int num_referrals;
-       int rc = 0;
+               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));
 
-       rc = get_dfs_path(xid, pSesInfo, old_path, nls_codepage,
-                       &num_referrals, &referrals, remap);
+               if (old_ip != new_target_ip_addr)
+                       continue;
 
-       /* BB Add in code to: if valid refrl, if not ip address contact
-               the helper that resolves tcp names, mount to it, try to
-               tcon to it unmount it if fail */
+               /* 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));
 
-       kfree(referrals);
+               if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE))
+                       continue;
 
-       return rc;
+               cFYI(1, ("and old usr: %s new: %s",
+                       tcon->treeName, uncName));
+
+               if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE))
+                       continue;
+
+               /* matched smb session (user name) */
+               read_unlock(&GlobalSMBSeslock);
+               return tcon;
+       }
+
+       read_unlock(&GlobalSMBSeslock);
+       return NULL;
 }
 
 int
@@ -1433,7 +1431,6 @@ get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path,
 {
        char *temp_unc;
        int rc = 0;
-       unsigned char *targetUNCs;
 
        *pnum_referrals = 0;
        *preferrals = NULL;
@@ -1456,7 +1453,7 @@ get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path,
                kfree(temp_unc);
        }
        if (rc == 0)
-               rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, &targetUNCs,
+               rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals,
                                     pnum_referrals, nls_codepage, remap);
        /* BB map targetUNCs to dfs_info3 structures, here or
                in CIFSGetDFSRefer BB */
@@ -1807,7 +1804,7 @@ convert_delimiter(char *path, char delim)
        if (path == NULL)
                return;
 
-       if (delim == '/') 
+       if (delim == '/')
                old_delim = '\\';
        else
                old_delim = '/';
@@ -1982,7 +1979,6 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                                kfree(srvTcp->hostname);
                                goto out;
                        }
-                       wait_for_completion(&cifsd_complete);
                        rc = 0;
                        memcpy(srvTcp->workstation_RFC1001_name,
                                volume_info.source_rfc1001_name, 16);
@@ -2118,11 +2114,17 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                        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);
@@ -2134,6 +2136,9 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                           for the retry flag is used */
                        tcon->retry = volume_info.retry;
                        tcon->nocase = volume_info.nocase;
+                       if (tcon->seal != volume_info.seal)
+                               cERROR(1, ("transport encryption setting "
+                                          "conflicts with existing tid"));
                } else {
                        tcon = tconInfoAlloc();
                        if (tcon == NULL)
@@ -2147,10 +2152,11 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                                if ((strchr(volume_info.UNC + 3, '\\') == NULL)
                                    && (strchr(volume_info.UNC + 3, '/') ==
                                        NULL)) {
-                                       rc = connect_to_dfs_path(xid, pSesInfo,
+/*                                     rc = connect_to_dfs_path(xid, pSesInfo,
                                                "", cifs_sb->local_nls,
                                                cifs_sb->mnt_cifs_flags &
-                                                 CIFS_MOUNT_MAP_SPECIAL_CHR);
+                                                 CIFS_MOUNT_MAP_SPECIAL_CHR);*/
+                                       cFYI(1, ("DFS root not supported"));
                                        rc = -ENODEV;
                                        goto out;
                                } else {
@@ -2166,6 +2172,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                                        atomic_inc(&pSesInfo->inUse);
                                        tcon->retry = volume_info.retry;
                                        tcon->nocase = volume_info.nocase;
+                                       tcon->seal = volume_info.seal;
                                }
                        }
                }
@@ -2189,15 +2196,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                        srvTcp->tcpStatus = CifsExiting;
                        spin_unlock(&GlobalMid_Lock);
                        if (srvTcp->tsk) {
-                               struct task_struct *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);
-                               tsk = srvTcp->tsk;
-                               if (tsk)
-                                       kthread_stop(tsk);
+                               kthread_stop(srvTcp->tsk);
                        }
                }
                 /* If find_unc succeeded then rc == 0 so we can not end */
@@ -2213,23 +2217,17 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                                        if ((temp_rc == -ESHUTDOWN) &&
                                            (pSesInfo->server) &&
                                            (pSesInfo->server->tsk)) {
-                                               struct task_struct *tsk;
                                                force_sig(SIGKILL,
                                                        pSesInfo->server->tsk);
-                                               tsk = pSesInfo->server->tsk;
-                                               if (tsk)
-                                                       kthread_stop(tsk);
+                                               kthread_stop(pSesInfo->server->tsk);
                                        }
                                } else {
                                        cFYI(1, ("No session or bad tcon"));
                                        if ((pSesInfo->server) &&
                                            (pSesInfo->server->tsk)) {
-                                               struct task_struct *tsk;
                                                force_sig(SIGKILL,
                                                        pSesInfo->server->tsk);
-                                               tsk = pSesInfo->server->tsk;
-                                               if (tsk)
-                                                       kthread_stop(tsk);
+                                               kthread_stop(pSesInfo->server->tsk);
                                        }
                                }
                                sesInfoFree(pSesInfo);
@@ -2316,9 +2314,10 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
        user = ses->userName;
        domain = ses->domainName;
        smb_buffer = cifs_buf_get();
-       if (smb_buffer == NULL) {
+
+       if (smb_buffer == NULL)
                return -ENOMEM;
-       }
+
        smb_buffer_response = smb_buffer;
        pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
 
@@ -3555,8 +3554,6 @@ cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
        cifs_sb->prepathlen = 0;
        cifs_sb->prepath = NULL;
        kfree(tmp);
-       if (ses)
-               schedule_timeout_interruptible(msecs_to_jiffies(500));
        if (ses)
                sesInfoFree(ses);