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[CIFS] Fix umount --force to wake up the pending response queue, not just

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the request queue. Also periodically wakeup response_q so threads can
check if stuck requests have timed out. Workaround Windows server illegal smb
length on transact2 findfirst response.

Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French
2005-11-29 20:55:11 -08:00
parent 6473a559c3
commit 6ab16d2495
5 changed files with 62 additions and 8 deletions
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17
fs/cifs/misc.c
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@@ -397,12 +397,12 @@ checkSMBhdr(struct smb_hdr *smb, __u16 mid)
if(smb->Command == SMB_COM_LOCKING_ANDX)
return 0;
else
cERROR(1, ("Rcvd Request not response "));
cERROR(1, ("Rcvd Request not response"));
}
} else { /* bad signature or mid */
if (*(__le32 *) smb->Protocol != cpu_to_le32(0x424d53ff))
cERROR(1,
("Bad protocol string signature header %x ",
("Bad protocol string signature header %x",
*(unsigned int *) smb->Protocol));
if (mid != smb->Mid)
cERROR(1, ("Mids do not match"));
@@ -417,7 +417,7 @@ checkSMB(struct smb_hdr *smb, __u16 mid, int length)
__u32 len = smb->smb_buf_length;
__u32 clc_len; /* calculated length */
cFYI(0,
("Entering checkSMB with Length: %x, smb_buf_length: %x ",
("Entering checkSMB with Length: %x, smb_buf_length: %x",
length, len));
if (((unsigned int)length < 2 + sizeof (struct smb_hdr)) ||
(len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4)) {
@@ -451,9 +451,16 @@ checkSMB(struct smb_hdr *smb, __u16 mid, int length)
cERROR(1, ("bad smb size detected for Mid=%d", smb->Mid));
/* Windows XP can return a few bytes too much, presumably
an illegal pad, at the end of byte range lock responses
so we allow for up to eight byte pad, as long as actual
so we allow for that three byte pad, as long as actual
received length is as long or longer than calculated length */
if((4+len > clc_len) && (len <= clc_len + 3))
/* We have now had to extend this more, since there is a
case in which it needs to be bigger still to handle a
malformed response to transact2 findfirst from WinXP when
access denied is returned and thus bcc and wct are zero
but server says length is 0x21 bytes too long as if the server
forget to reset the smb rfc1001 length when it reset the
wct and bcc to minimum size and drop the t2 parms and data */
if((4+len > clc_len) && (len <= clc_len + 512))
return 0;
else
return 1;