1 files changed, 83 insertions, 13 deletions

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 075d8fb3d376..5dc5a966bd5f 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -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 == cpu_to_le16(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);
@@ -1617,7 +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);
@@ -2773,9 +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)
@@ -2856,7 +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,
@@ -2898,7 +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;
@@ -2922,6 +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 */
@@ -2970,7 +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);
@@ -2982,13 +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;
         }
@@ -3613,6 +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;