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authorSteve French <smfrench@austin.rr.com>2005-04-28 22:41:10 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-28 22:41:10 -0700
commitcd63499cbe37e53e6cc084c8a35d911a4613c797 (patch)
tree5f365aa9daaf89a9890c53dc681474a7fd292e45
parent275cde1a1f3880601509c851d72c82bb8d3ee67c (diff)
[PATCH] cifs: Handle case of multiple trans2 responses for one SMB request (part 2 of 2)
Signed-off-by: Steve French (sfrench@us.ibm.com) Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--fs/cifs/CHANGES2
-rw-r--r--fs/cifs/cifssmb.c22
-rw-r--r--fs/cifs/connect.c19
3 files changed, 23 insertions, 20 deletions
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 0414eb32546..3d61d96d740 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -4,6 +4,8 @@ Fix caching problem, in which readdir of directory containing a file
which was cached could cause the file's time stamp to be updated
without invalidating the readahead data (so we could get stale
file data on the client for that file even as the server copy changed).
+Cleanup response processing so cifsd can not loop when abnormally
+terminated.
Version 1.32
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index a6e66974b28..f8edf816b4b 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -470,7 +470,7 @@ CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
return rc;
} else {
smb_buffer_response = smb_buffer; /* BB removeme BB */
- }
+ }
rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response,
&length, 0);
if (rc)
@@ -2517,9 +2517,6 @@ findFirstRetry:
psrch_inf->srch_entries_start =
(char *) &pSMBr->hdr.Protocol +
le16_to_cpu(pSMBr->t2.DataOffset);
-/* if(le16_to_cpu(pSMBr->t2.DataCount) != le16_to_cpu(pSMBr->t2.TotalDataCount)) {
- cERROR(1,("DC: %d TDC: %d",pSMBr->t2.DataCount,pSMBr->t2.TotalDataCount));
-} */ /* BB removeme BB */
parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
le16_to_cpu(pSMBr->t2.ParameterOffset));
@@ -2531,7 +2528,6 @@ findFirstRetry:
psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount);
psrch_inf->index_of_last_entry =
psrch_inf->entries_in_buffer;
-/*cFYI(1,("entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */ /* BB removeme BB */
*pnetfid = parms->SearchHandle;
} else {
cifs_buf_release(pSMB);
@@ -3451,11 +3447,13 @@ CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
cFYI(1, ("SetFileSize (via SetFileInfo) %lld",
(long long)size));
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
+ rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
+
if (rc)
return rc;
+ pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
+
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
@@ -3515,7 +3513,7 @@ CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
}
if (pSMB)
- cifs_buf_release(pSMB);
+ cifs_small_buf_release(pSMB);
/* Note: On -EAGAIN error only caller can retry on handle based calls
since file handle passed in no longer valid */
@@ -3541,11 +3539,13 @@ CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_I
__u16 params, param_offset, offset, byte_count, count;
cFYI(1, ("Set Times (via SetFileInfo)"));
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
+ rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
+
if (rc)
return rc;
+ pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
+
/* At this point there is no need to override the current pid
with the pid of the opener, but that could change if we someday
use an existing handle (rather than opening one on the fly) */
@@ -3591,7 +3591,7 @@ CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_I
cFYI(1,("Send error in Set Time (SetFileInfo) = %d",rc));
}
- cifs_buf_release(pSMB);
+ cifs_small_buf_release(pSMB);
/* Note: On -EAGAIN error only caller can retry on handle based calls
since file handle passed in no longer valid */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index a8d592bc33f..e3b177a90b3 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -544,15 +544,13 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
if ((mid_entry->mid == smb_buffer->Mid) &&
(mid_entry->midState == MID_REQUEST_SUBMITTED) &&
(mid_entry->command == smb_buffer->Command)) {
- cFYI(1,("Found Mid 0x%x wake", mid_entry->mid));
-
if(check2ndT2(smb_buffer,server->maxBuf) > 0) {
/* We have a multipart transact2 resp */
+ isMultiRsp = TRUE;
if(mid_entry->resp_buf) {
/* merge response - fix up 1st*/
if(coalesce_t2(smb_buffer,
mid_entry->resp_buf)) {
- isMultiRsp = TRUE;
break;
} else {
/* all parts received */
@@ -564,10 +562,10 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
/* BB maybe we can fix this up, switch
to already allocated large buffer? */
} else {
+ /* Have first buffer */
mid_entry->resp_buf =
smb_buffer;
mid_entry->largeBuf = 1;
- isMultiRsp = TRUE;
bigbuf = NULL;
}
}
@@ -586,11 +584,14 @@ multi_t2_fnd:
}
spin_unlock(&GlobalMid_Lock);
if (task_to_wake) {
- if(isLargeBuf)
- bigbuf = NULL;
- else
- smallbuf = NULL;
- /* smb buffer freed by user thread when done */
+ /* Was previous buf put in mpx struct for multi-rsp? */
+ if(!isMultiRsp) {
+ /* smb buffer will be freed by user thread */
+ if(isLargeBuf) {
+ bigbuf = NULL;
+ } else
+ smallbuf = NULL;
+ }
wake_up_process(task_to_wake);
} else if ((is_valid_oplock_break(smb_buffer) == FALSE)
&& (isMultiRsp == FALSE)) {