diff options
Diffstat (limited to 'fs/cifs/transport.c')
| -rw-r--r-- | fs/cifs/transport.c | 54 |
1 files changed, 35 insertions, 19 deletions
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index af13e526b150..0046c219833d 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -1,7 +1,7 @@ /* * fs/cifs/transport.c * - * Copyright (C) International Business Machines Corp., 2002,2004 + * 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 @@ -41,7 +41,7 @@ AllocMidQEntry(struct smb_hdr *smb_buffer, struct cifsSesInfo *ses) struct mid_q_entry *temp; if (ses == NULL) { - cERROR(1, ("Null session passed in to AllocMidQEntry ")); + cERROR(1, ("Null session passed in to AllocMidQEntry")); return NULL; } if (ses->server == NULL) { @@ -79,7 +79,10 @@ DeleteMidQEntry(struct mid_q_entry *midEntry) list_del(&midEntry->qhead); atomic_dec(&midCount); spin_unlock(&GlobalMid_Lock); - cifs_buf_release(midEntry->resp_buf); + if(midEntry->largeBuf) + cifs_buf_release(midEntry->resp_buf); + else + cifs_small_buf_release(midEntry->resp_buf); mempool_free(midEntry, cifs_mid_poolp); } @@ -182,14 +185,14 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer, int smb_sendv(struct socket *ssocket, struct smb_hdr *smb_buffer, - unsigned int smb_buf_length, struct kvec * write_vector /* page list */, struct sockaddr *sin) + unsigned int smb_buf_length, struct kvec * write_vector + /* page list */, struct sockaddr *sin) { int rc = 0; int i = 0; struct msghdr smb_msg; number_of_pages += 1; /* account for SMB header */ struct kvec * piov = kmalloc(number_of_pages * sizeof(struct kvec)); - if(i=0;i<num_pages-1;i++ unsigned len = smb_buf_length + 4; if(ssocket == NULL) @@ -213,7 +216,8 @@ smb_sendv(struct socket *ssocket, struct smb_hdr *smb_buffer, dump_smb(smb_buffer, len); while (len > 0) { - rc = kernel_sendmsg(ssocket, &smb_msg, &iov, number_of_pages, len?); + rc = kernel_sendmsg(ssocket, &smb_msg, &iov, number_of_pages, + len); if ((rc == -ENOSPC) || (rc == -EAGAIN)) { i++; if(i > 60) { @@ -266,6 +270,9 @@ CIFSSendRcv(const unsigned int xid, struct cifsSesInfo *ses, + if(ses->server->tcpStatus == CIFS_EXITING) + return -ENOENT; + /* Ensure that we do not send more than 50 overlapping requests to the same server. We may make this configurable later or use ses->maxReq */ @@ -346,11 +353,12 @@ CIFSSendRcv(const unsigned int xid, struct cifsSesInfo *ses, } /* BB can we sign efficiently in this path? */ - rc = cifs_sign_smb(in_buf, ses, &midQ->sequence_number); + rc = cifs_sign_smb(in_buf, ses->server, &midQ->sequence_number); midQ->midState = MID_REQUEST_SUBMITTED; -/* rc = smb_sendv(ses->server->ssocket, in_buf, in_buf->smb_buf_length, piovec, - (struct sockaddr *) &(ses->server->addr.sockAddr));*/ +/* rc = smb_sendv(ses->server->ssocket, in_buf, in_buf->smb_buf_length, + piovec, + (struct sockaddr *) &(ses->server->addr.sockAddr));*/ if(rc < 0) { DeleteMidQEntry(midQ); up(&ses->server->tcpSem); @@ -396,6 +404,9 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, return -EIO; } + if(ses->server->tcpStatus == CifsExiting) + return -ENOENT; + /* Ensure that we do not send more than 50 overlapping requests to the same server. We may make this configurable later or use ses->maxReq */ @@ -405,7 +416,8 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, } else { spin_lock(&GlobalMid_Lock); while(1) { - if(atomic_read(&ses->server->inFlight) >= cifs_max_pending){ + if(atomic_read(&ses->server->inFlight) >= + cifs_max_pending){ spin_unlock(&GlobalMid_Lock); wait_event(ses->server->request_q, atomic_read(&ses->server->inFlight) @@ -475,7 +487,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, return -EIO; } - rc = cifs_sign_smb(in_buf, ses, &midQ->sequence_number); + rc = cifs_sign_smb(in_buf, ses->server, &midQ->sequence_number); midQ->midState = MID_REQUEST_SUBMITTED; rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length, @@ -493,7 +505,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, up(&ses->server->tcpSem); if (long_op == -1) goto cifs_no_response_exit; - else if (long_op == 2) /* writes past end of file can take looooong time */ + else if (long_op == 2) /* writes past end of file can take loong time */ timeout = 300 * HZ; else if (long_op == 1) timeout = 45 * HZ; /* should be greater than @@ -559,8 +571,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, } if (receive_len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) { - cERROR(1, - ("Frame too large received. Length: %d Xid: %d", + cERROR(1, ("Frame too large received. Length: %d Xid: %d", receive_len, xid)); rc = -EIO; } else { /* rcvd frame is ok */ @@ -575,15 +586,20 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, dump_smb(out_buf, 92); /* convert the length into a more usable form */ if((receive_len > 24) && - (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))) { - rc = cifs_verify_signature(out_buf, ses->mac_signing_key,midQ->sequence_number); /* BB fix BB */ - if(rc) - cFYI(1,("Unexpected signature received from server")); + (ses->server->secMode & (SECMODE_SIGN_REQUIRED | + SECMODE_SIGN_ENABLED))) { + rc = cifs_verify_signature(out_buf, + ses->server->mac_signing_key, + midQ->sequence_number+1); + if(rc) { + cERROR(1,("Unexpected SMB signature")); + /* BB FIXME add code to kill session */ + } } *pbytes_returned = out_buf->smb_buf_length; - /* BB special case reconnect tid and reconnect uid here? */ + /* BB special case reconnect tid and uid here? */ rc = map_smb_to_linux_error(out_buf); /* convert ByteCount if necessary */ |