diff options
-rw-r--r-- | fs/cifs/cifssmb.c | 32 | ||||
-rw-r--r-- | fs/cifs/connect.c | 11 | ||||
-rw-r--r-- | fs/cifs/file.c | 2 | ||||
-rw-r--r-- | fs/cifs/sess.c | 4 |
4 files changed, 18 insertions, 31 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index b7df4bf..602326f 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -453,8 +453,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses) } server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode); server->maxReq = le16_to_cpu(rsp->MaxMpxCount); - server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), - (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); + server->maxBuf = le16_to_cpu(rsp->MaxBufSize); server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); /* even though we do not use raw we might as well set this accurately, in case we ever find a need for it */ @@ -561,8 +560,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses) little endian */ server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); /* probably no need to store and check maxvcs */ - server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), - (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); + server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); cFYI(DBG2, "Max buf = %d", ses->server->maxBuf); server->capabilities = le32_to_cpu(pSMBr->Capabilities); @@ -2812,8 +2810,7 @@ CIFSSMBQueryReparseLinkInfo(const int xid, struct cifs_tcon *tcon, pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le32(2); /* BB find exact data count max from sess structure BB */ - pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); + pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); pSMB->MaxSetupCount = 4; pSMB->Reserved = 0; pSMB->ParameterOffset = 0; @@ -3306,8 +3303,7 @@ smb_init_nttransact(const __u16 sub_command, const int setup_count, pSMB->Reserved = 0; pSMB->TotalParameterCount = cpu_to_le32(parm_len); pSMB->TotalDataCount = 0; - pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); + pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->DataCount = pSMB->TotalDataCount; temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + @@ -3977,8 +3973,7 @@ findFirstRetry: params = 12 + name_len /* includes null */ ; pSMB->TotalDataCount = 0; /* no EAs */ pSMB->MaxParameterCount = cpu_to_le16(10); - pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); + pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -4052,8 +4047,7 @@ findFirstRetry: psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + psrch_inf->entries_in_buffer; lnoff = le16_to_cpu(parms->LastNameOffset); - if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < - lnoff) { + if (CIFSMaxBufSize < lnoff) { cERROR(1, "ignoring corrupt resume name"); psrch_inf->last_entry = NULL; return rc; @@ -4097,9 +4091,7 @@ int CIFSFindNext(const int xid, struct cifs_tcon *tcon, byte_count = 0; pSMB->TotalDataCount = 0; /* no EAs */ pSMB->MaxParameterCount = cpu_to_le16(8); - pSMB->MaxDataCount = - cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & - 0xFFFFFF00); + pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -4181,8 +4173,7 @@ int CIFSFindNext(const int xid, struct cifs_tcon *tcon, psrch_inf->index_of_last_entry += psrch_inf->entries_in_buffer; lnoff = le16_to_cpu(parms->LastNameOffset); - if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE < - lnoff) { + if (CIFSMaxBufSize < lnoff) { cERROR(1, "ignoring corrupt resume name"); psrch_inf->last_entry = NULL; return rc; @@ -6035,12 +6026,7 @@ int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon, pSMB->TotalParameterCount = 0 ; pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le32(2); - /* BB find exact data count max from sess structure BB */ - pSMB->MaxDataCount = 0; /* same in little endian or be */ -/* BB VERIFY verify which is correct for above BB */ - pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); - + pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); pSMB->MaxSetupCount = 4; pSMB->Reserved = 0; pSMB->ParameterOffset = 0; diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 71beb02..a0077a5 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -181,7 +181,7 @@ cifs_reconnect(struct TCP_Server_Info *server) -EINVAL = invalid transact2 */ -static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) +static int check2ndT2(struct smb_hdr *pSMB) { struct smb_t2_rsp *pSMBt; int remaining; @@ -214,9 +214,9 @@ static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) cFYI(1, "missing %d bytes from transact2, check next response", remaining); - if (total_data_size > maxBufSize) { + if (total_data_size > CIFSMaxBufSize) { cERROR(1, "TotalDataSize %d is over maximum buffer %d", - total_data_size, maxBufSize); + total_data_size, CIFSMaxBufSize); return -EINVAL; } return remaining; @@ -486,7 +486,7 @@ find_cifs_mid(struct TCP_Server_Info *server, struct smb_hdr *buf, mid->command != buf->Command) continue; - if (*length == 0 && check2ndT2(buf, server->maxBuf) > 0) { + if (*length == 0 && check2ndT2(buf) > 0) { /* We have a multipart transact2 resp */ *is_multi_rsp = true; if (mid->resp_buf) { @@ -3130,8 +3130,7 @@ try_mount_again: cFYI(DBG2, "no very large read support, rsize now 127K"); } if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) - cifs_sb->rsize = min(cifs_sb->rsize, - (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); + cifs_sb->rsize = min(cifs_sb->rsize, CIFSMaxBufSize); cifs_sb->wsize = cifs_negotiate_wsize(tcon, volume_info); diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 9f41a10..fd57165 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1868,7 +1868,7 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size, if ((pTcon->ses) && !(pTcon->ses->capabilities & CAP_LARGE_FILES)) { current_read_size = min_t(const int, current_read_size, - pTcon->ses->server->maxBuf - 128); + CIFSMaxBufSize); } rc = -EAGAIN; while (rc == -EAGAIN) { diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index d3e6196..c7d80e2 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -124,7 +124,9 @@ static __u32 cifs_ssetup_hdr(struct cifs_ses *ses, SESSION_SETUP_ANDX *pSMB) /* that we use in next few lines */ /* Note that header is initialized to zero in header_assemble */ pSMB->req.AndXCommand = 0xFF; - pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); + pSMB->req.MaxBufferSize = cpu_to_le16(min_t(u32, + CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4, + USHRT_MAX)); pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); pSMB->req.VcNumber = get_next_vcnum(ses); |