diff options
| author | Steve French | 2005-04-28 22:41:09 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2005-04-28 22:41:09 -0700 |
| commit | 67010fbc6ff889aaf86592bc148d705c5b9e1a27 (patch) | |
| tree | b599e682e12af8dd9d15d295bbb2d29f064a2904 | |
| parent | 09d1db5c6131232f764046160c29118cd4e5e646 (diff) | |
[PATCH] cifs: Better handle errors on second socket recv message call
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | fs/cifs/cifsglob.h | 3 | ||||
| -rw-r--r-- | fs/cifs/connect.c | 31 |
2 files changed, 27 insertions, 7 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 322a12450ad3..8fc0801f8457 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -1,7 +1,7 @@ /* * fs/cifs/cifsglob.h * - * Copyright (C) International Business Machines Corp., 2002,2003 + * Copyright (C) International Business Machines Corp., 2002,2005 * Author(s): Steve French (sfrench@us.ibm.com) * * This library is free software; you can redistribute it and/or modify @@ -321,6 +321,7 @@ struct mid_q_entry { __u8 command; /* smb command code */ unsigned multiPart:1; /* multiple responses to one SMB request */ unsigned largeBuf:1; /* if valid response, is pointer to large buf */ + unsigned multiResp:1 /* multiple trans2 responses for one request */ }; struct oplock_q_entry { diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index d5d49b584db4..8c5d310514ea 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -359,20 +359,36 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server) length = 0; iov.iov_base = 4 + (char *)smb_buffer; iov.iov_len = pdu_length; - for (total_read = 0; + for (total_read = 0; total_read < pdu_length; total_read += length) { - length = kernel_recvmsg(csocket, &smb_msg, + length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, pdu_length - total_read, 0); - if (length == 0) { + if((server->tcpStatus == CifsExiting) || + (length == -EINTR)) { + /* then will exit */ + goto dmx_loop_end; + } else if (server->tcpStatus == + CifsNeedReconnect) { + cifs_reconnect(server); + csocket = server->ssocket; + /* Reconnect wakes up rspns q */ + /* Now we will reread sock */ + goto dmx_loop_end; + } else if ((length == -ERESTARTSYS) || + (length == -EAGAIN)) { + msleep(1); /* minimum sleep to prevent looping + allowing socket to clear and app threads to set + tcpStatus CifsNeedReconnect if server hung */ + continue; + } else if (length <= 0) { cERROR(1, - ("Zero length receive when expecting %d ", + ("Received no data, expecting %d", pdu_length - total_read)); cifs_reconnect(server); csocket = server->ssocket; - wake_up(&server->response_q); - continue; + goto dmx_loop_end; } } length += 4; /* account for rfc1002 hdr */ @@ -434,6 +450,9 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server) wake_up(&server->response_q); continue; } +dmx_loop_end: + cFYI(1,("Exiting cifsd loop")); + } spin_lock(&GlobalMid_Lock); server->tcpStatus = CifsExiting; |