From 2cd646a2d1d5e0e46aa4bb55b1847b0cb35bd855 Mon Sep 17 00:00:00 2001 From: Steve French Date: Thu, 28 Sep 2006 19:43:08 +0000 Subject: [CIFS] Remove static and unused symbols Most cases of the ones found by Shaggy by "make namespacecheck" could be removed or made static Ack: Dave Kleikamp Signed-off-by: Steve French --- fs/cifs/misc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/cifs/misc.c') diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 22c937e5884f..ca6e9b1413fa 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -389,7 +389,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ , return; } -int +static int checkSMBhdr(struct smb_hdr *smb, __u16 mid) { /* Make sure that this really is an SMB, that it is a response, -- cgit v1.2.3 From d103e164bee2f21d0efe7d713cbbb0a443ba480d Mon Sep 17 00:00:00 2001 From: Steve French Date: Thu, 12 Oct 2006 17:49:24 +0000 Subject: [CIFS] Workaround incomplete byte length returned by some servers on small SMB responses Signed-off-by: Steve French --- fs/cifs/misc.c | 42 +++++++++++++++++++++++++++++------------- 1 file changed, 29 insertions(+), 13 deletions(-) (limited to 'fs/cifs/misc.c') diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index ca6e9b1413fa..bbc9cd34b6ea 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -418,26 +418,42 @@ checkSMBhdr(struct smb_hdr *smb, __u16 mid) } int -checkSMB(struct smb_hdr *smb, __u16 mid, int length) +checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length) { __u32 len = smb->smb_buf_length; __u32 clc_len; /* calculated length */ cFYI(0, ("checkSMB Length: 0x%x, smb_buf_length: 0x%x", length, len)); - if (((unsigned int)length < 2 + sizeof (struct smb_hdr)) || - (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4)) { - if ((unsigned int)length < 2 + sizeof (struct smb_hdr)) { - if (((unsigned int)length >= - sizeof (struct smb_hdr) - 1) + + if (length < 2 + sizeof (struct smb_hdr)) { + if ((length >= sizeof (struct smb_hdr) - 1) && (smb->Status.CifsError != 0)) { - smb->WordCount = 0; - /* some error cases do not return wct and bcc */ + smb->WordCount = 0; + /* some error cases do not return wct and bcc */ + return 0; + } else if ((length == sizeof(struct smb_hdr) + 1) && + (smb->WordCount == 0)) { + char * tmp = (char *)smb; + /* Need to work around a bug in two servers here */ + /* First, check if the part of bcc they sent was zero */ + if (tmp[sizeof(struct smb_hdr)] == 0) { + /* some servers return only half of bcc + * on simple responses (wct, bcc both zero) + * in particular have seen this on + * ulogoffX and FindClose. This leaves + * one byte of bcc potentially unitialized + */ + /* zero rest of bcc */ + tmp[sizeof(struct smb_hdr)+1] = 0; return 0; - } else { - cERROR(1, ("Length less than smb header size")); } + cERROR(1,("rcvd invalid byte count (bcc)")); + } else { + cERROR(1, ("Length less than smb header size")); } - if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) - cERROR(1, ("smb length greater than MaxBufSize, mid=%d", + return 1; + } + if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { + cERROR(1, ("smb length greater than MaxBufSize, mid=%d", smb->Mid)); return 1; } @@ -446,7 +462,7 @@ checkSMB(struct smb_hdr *smb, __u16 mid, int length) return 1; clc_len = smbCalcSize_LE(smb); - if(4 + len != (unsigned int)length) { + if(4 + len != length) { cERROR(1, ("Length read does not match RFC1001 length %d",len)); return 1; } -- cgit v1.2.3