[CIFS] Missing flags2 for DFS
[sfrench/cifs-2.6.git] / fs / cifs / cifssmb.c
index 19678c575dfc4bcc786d158a20f56a450caccec1..5dc5a966bd5ff1b191838346bc19f465402aea9f 100644 (file)
@@ -46,6 +46,7 @@ static struct {
 } protocols[] = {
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
        {LANMAN_PROT, "\2LM1.2X002"},
+       {LANMAN2_PROT, "\2LANMAN2.1"},
 #endif /* weak password hashing for legacy clients */
        {CIFS_PROT, "\2NT LM 0.12"}, 
        {POSIX_PROT, "\2POSIX 2"},
@@ -58,6 +59,7 @@ static struct {
 } protocols[] = {
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
        {LANMAN_PROT, "\2LM1.2X002"},
+       {LANMAN2_PROT, "\2LANMAN2.1"},
 #endif /* weak password hashing for legacy clients */
        {CIFS_PROT, "\2NT LM 0.12"}, 
        {BAD_PROT, "\2"}
@@ -67,13 +69,13 @@ static struct {
 /* define the number of elements in the cifs dialect array */
 #ifdef CONFIG_CIFS_POSIX
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
-#define CIFS_NUM_PROT 3
+#define CIFS_NUM_PROT 4
 #else
 #define CIFS_NUM_PROT 2
 #endif /* CIFS_WEAK_PW_HASH */
 #else /* not posix */
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
-#define CIFS_NUM_PROT 2
+#define CIFS_NUM_PROT 3
 #else
 #define CIFS_NUM_PROT 1
 #endif /* CONFIG_CIFS_WEAK_PW_HASH */
@@ -446,7 +448,9 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
                goto neg_err_exit;
 #ifdef CONFIG_CIFS_WEAK_PW_HASH 
        } else if((pSMBr->hdr.WordCount == 13)
-                       && (pSMBr->DialectIndex == LANMAN_PROT)) {
+                       && ((pSMBr->DialectIndex == LANMAN_PROT)
+                               || (pSMBr->DialectIndex == LANMAN2_PROT))) {
+               __s16 tmp;
                struct lanman_neg_rsp * rsp = (struct lanman_neg_rsp *)pSMBr;
 
                if((secFlags & CIFSSEC_MAY_LANMAN) || 
@@ -472,12 +476,44 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
                        server->maxRw = 0;/* we do not need to use raw anyway */
                        server->capabilities = CAP_MPX_MODE;
                }
-               server->timeZone = le16_to_cpu(rsp->ServerTimeZone);
+               tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone);
+               if (tmp == -1) {
+                       /* OS/2 often does not set timezone therefore
+                        * we must use server time to calc time zone.
+                        * Could deviate slightly from the right zone.
+                        * Smallest defined timezone difference is 15 minutes
+                        * (i.e. Nepal).  Rounding up/down is done to match
+                        * this requirement.
+                        */
+                       int val, seconds, remain, result;
+                       struct timespec ts, utc;
+                       utc = CURRENT_TIME;
+                       ts = cnvrtDosUnixTm(le16_to_cpu(rsp->SrvTime.Date),
+                                               le16_to_cpu(rsp->SrvTime.Time));
+                       cFYI(1,("SrvTime: %d sec since 1970 (utc: %d) diff: %d",
+                               (int)ts.tv_sec, (int)utc.tv_sec, 
+                               (int)(utc.tv_sec - ts.tv_sec)));
+                       val = (int)(utc.tv_sec - ts.tv_sec);
+                       seconds = val < 0 ? -val : val;
+                       result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ;
+                       remain = seconds % MIN_TZ_ADJ;
+                       if(remain >= (MIN_TZ_ADJ / 2))
+                               result += MIN_TZ_ADJ;
+                       if(val < 0)
+                               result = - result;
+                       server->timeAdj = result;
+               } else {
+                       server->timeAdj = (int)tmp;
+                       server->timeAdj *= 60; /* also in seconds */
+               }
+               cFYI(1,("server->timeAdj: %d seconds", server->timeAdj));
+
 
                /* BB get server time for time conversions and add
                code to use it and timezone since this is not UTC */    
 
-               if (rsp->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
+               if (rsp->EncryptionKeyLength == 
+                               cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
                        memcpy(server->cryptKey, rsp->EncryptionKey,
                                CIFS_CRYPTO_KEY_SIZE);
                } else if (server->secMode & SECMODE_PW_ENCRYPT) {
@@ -531,7 +567,8 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
        cFYI(0, ("Max buf = %d", ses->server->maxBuf));
        GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
        server->capabilities = le32_to_cpu(pSMBr->Capabilities);
-       server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone);  
+       server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone);
+       server->timeAdj *= 60;
        if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
                memcpy(server->cryptKey, pSMBr->u.EncryptionKey,
                       CIFS_CRYPTO_KEY_SIZE);
@@ -1460,8 +1497,13 @@ CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
        pSMB->hdr.smb_buf_length += count;
        pSMB->ByteCount = cpu_to_le16(count);
 
-       rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+       if (waitFlag) {
+               rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
+                       (struct smb_hdr *) pSMBr, &bytes_returned);
+       } else {
+               rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
                         (struct smb_hdr *) pSMBr, &bytes_returned, timeout);
+       }
        cifs_stats_inc(&tcon->num_locks);
        if (rc) {
                cFYI(1, ("Send error in Lock = %d", rc));
@@ -1484,6 +1526,7 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
        char *data_offset;
        struct cifs_posix_lock *parm_data;
        int rc = 0;
+       int timeout = 0;
        int bytes_returned = 0;
        __u16 params, param_offset, offset, byte_count, count;
 
@@ -1503,7 +1546,6 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
        pSMB->MaxSetupCount = 0;
        pSMB->Reserved = 0;
        pSMB->Flags = 0;
-       pSMB->Timeout = 0;
        pSMB->Reserved2 = 0;
        param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
        offset = param_offset + params;
@@ -1529,8 +1571,13 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
                        (((char *) &pSMB->hdr.Protocol) + offset);
 
        parm_data->lock_type = cpu_to_le16(lock_type);
-       if(waitFlag)
+       if(waitFlag) {
+               timeout = 3;  /* blocking operation, no timeout */
                parm_data->lock_flags = cpu_to_le16(1);
+               pSMB->Timeout = cpu_to_le32(-1);
+       } else
+               pSMB->Timeout = 0;
+
        parm_data->pid = cpu_to_le32(current->tgid);
        parm_data->start = cpu_to_le64(pLockData->fl_start);
        parm_data->length = cpu_to_le64(len);  /* normalize negative numbers */
@@ -1541,8 +1588,14 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
        pSMB->Reserved4 = 0;
        pSMB->hdr.smb_buf_length += byte_count;
        pSMB->ByteCount = cpu_to_le16(byte_count);
-       rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
-                       (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+       if (waitFlag) {
+               rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
+                       (struct smb_hdr *) pSMBr, &bytes_returned);
+       } else {
+               rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+                       (struct smb_hdr *) pSMBr, &bytes_returned, timeout);
+       }
+
        if (rc) {
                cFYI(1, ("Send error in Posix Lock = %d", rc));
        } else if (get_flag) {
@@ -1601,7 +1654,7 @@ CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
        pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
 
        pSMB->FileID = (__u16) smb_file_id;
-       pSMB->LastWriteTime = 0;
+       pSMB->LastWriteTime = 0xFFFFFFFF;
        pSMB->ByteCount = 0;
        rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
                         (struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -2757,9 +2810,11 @@ GetExtAttrOut:
 
 
 /* security id for everyone */
-const struct cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
+const static struct cifs_sid sid_everyone = 
+               {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
 /* group users */
-const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
+const static struct cifs_sid sid_user = 
+               {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
 
 /* Convert CIFS ACL to POSIX form */
 static int parse_sec_desc(struct cifs_sid * psec_desc, int acl_len)
@@ -2840,7 +2895,6 @@ qsec_out:
        return rc;
 }
 
-
 /* Legacy Query Path Information call for lookup to old servers such
    as Win9x/WinME */
 int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
@@ -2882,7 +2936,16 @@ QInfRetry:
        if (rc) {
                cFYI(1, ("Send error in QueryInfo = %d", rc));
        } else if (pFinfo) {            /* decode response */
+               struct timespec ts;
+               __u32 time = le32_to_cpu(pSMBr->last_write_time);
+               /* BB FIXME - add time zone adjustment BB */
                memset(pFinfo, 0, sizeof(FILE_ALL_INFO));
+               ts.tv_nsec = 0;
+               ts.tv_sec = time;
+               /* decode time fields */
+               pFinfo->ChangeTime = cifs_UnixTimeToNT(ts);
+               pFinfo->LastWriteTime = pFinfo->ChangeTime;
+               pFinfo->LastAccessTime = 0;
                pFinfo->AllocationSize =
                        cpu_to_le64(le32_to_cpu(pSMBr->size));
                pFinfo->EndOfFile = pFinfo->AllocationSize;
@@ -2906,6 +2969,7 @@ int
 CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
                 const unsigned char *searchName,
                 FILE_ALL_INFO * pFindData,
+                int legacy /* old style infolevel */,
                 const struct nls_table *nls_codepage, int remap)
 {
 /* level 263 SMB_QUERY_FILE_ALL_INFO */
@@ -2954,7 +3018,10 @@ QPathInfoRetry:
        byte_count = params + 1 /* pad */ ;
        pSMB->TotalParameterCount = cpu_to_le16(params);
        pSMB->ParameterCount = pSMB->TotalParameterCount;
-       pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
+       if(legacy)
+               pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD);
+       else
+               pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
        pSMB->Reserved4 = 0;
        pSMB->hdr.smb_buf_length += byte_count;
        pSMB->ByteCount = cpu_to_le16(byte_count);
@@ -2966,13 +3033,24 @@ QPathInfoRetry:
        } else {                /* decode response */
                rc = validate_t2((struct smb_t2_rsp *)pSMBr);
 
-               if (rc || (pSMBr->ByteCount < 40)) 
+               if (rc) /* BB add auto retry on EOPNOTSUPP? */
+                       rc = -EIO;
+               else if (!legacy && (pSMBr->ByteCount < 40)) 
                        rc = -EIO;      /* bad smb */
+               else if(legacy && (pSMBr->ByteCount < 24))
+                       rc = -EIO;  /* 24 or 26 expected but we do not read last field */
                else if (pFindData){
+                       int size;
                        __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+                       if(legacy) /* we do not read the last field, EAsize, fortunately
+                                          since it varies by subdialect and on Set vs. Get, is  
+                                          two bytes or 4 bytes depending but we don't care here */
+                               size = sizeof(FILE_INFO_STANDARD);
+                       else
+                               size = sizeof(FILE_ALL_INFO);
                        memcpy((char *) pFindData,
                               (char *) &pSMBr->hdr.Protocol +
-                              data_offset, sizeof (FILE_ALL_INFO));
+                              data_offset, size);
                } else
                    rc = -ENOMEM;
        }
@@ -3597,6 +3675,14 @@ getDFSRetry:
                strncpy(pSMB->RequestFileName, searchName, name_len);
        }
 
+       if(ses->server) {
+               if(ses->server->secMode &
+                  (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+                       pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
+       }
+
+        pSMB->hdr.Uid = ses->Suid;
+
        params = 2 /* level */  + name_len /*includes null */ ;
        pSMB->TotalDataCount = 0;
        pSMB->DataCount = 0;