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| author | Steve French <sfrench@us.ibm.com> | 2005-08-17 12:38:22 -0700 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2005-08-17 12:38:22 -0700 |
| commit | 1982c344f1bf08118f7c224958b30c64e162009e (patch) | |
| tree | b5268e345010421ca2625b29efc981c187c4df2e /fs/cifs/cifssmb.c | |
| parent | a59c658607b63ec7b6c2536597a075ee307b1b4c (diff) | |
| download | kernel-crypto-1982c344f1bf08118f7c224958b30c64e162009e.tar.gz kernel-crypto-1982c344f1bf08118f7c224958b30c64e162009e.tar.xz kernel-crypto-1982c344f1bf08118f7c224958b30c64e162009e.zip | |
[CIFS] Ensure that cifs multiplex ids do not collide.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Diffstat (limited to 'fs/cifs/cifssmb.c')
| -rw-r--r-- | fs/cifs/cifssmb.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 1b073546f5d..930be0927de 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -330,7 +330,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; - + pSMB->hdr.Mid = GetNextMid(server); pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; if (extended_security) pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; @@ -415,15 +415,14 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) if(server->secMode & SECMODE_SIGN_REQUIRED) cERROR(1, ("Server requires /proc/fs/cifs/PacketSigningEnabled")); - server->secMode &= ~(SECMODE_SIGN_ENABLED | - SECMODE_SIGN_REQUIRED); + server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); } else if(sign_CIFS_PDUs == 1) { if((server->secMode & SECMODE_SIGN_REQUIRED) == 0) - server->secMode &= ~(SECMODE_SIGN_ENABLED | - SECMODE_SIGN_REQUIRED); + server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); } } + cifs_buf_release(pSMB); return rc; } @@ -519,6 +518,8 @@ CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */ if(ses->server) { + pSMB->hdr.Mid = GetNextMid(ses->server); + if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; @@ -2519,11 +2520,12 @@ findFirstRetry: rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); - if (rc) {/* BB add logic to retry regular search if Unix search - rejected unexpectedly by server */ + if (rc) {/* BB add logic to retry regular search if Unix search rejected unexpectedly by server */ /* BB Add code to handle unsupported level rc */ cFYI(1, ("Error in FindFirst = %d", rc)); - cifs_buf_release(pSMB); + + if (pSMB) + cifs_buf_release(pSMB); /* BB eventually could optimize out free and realloc of buf */ /* for this case */ @@ -2857,7 +2859,10 @@ getDFSRetry: (void **) &pSMBr); if (rc) return rc; - + + /* server pointer checked in called function, + but should never be null here anyway */ + pSMB->hdr.Mid = GetNextMid(ses->server); pSMB->hdr.Tid = ses->ipc_tid; pSMB->hdr.Uid = ses->Suid; if (ses->capabilities & CAP_STATUS32) { |