struct list_head *tmp1;
/* list all files open on tree connection and mark them invalid */
- spin_lock(&cifs_file_list_lock);
+ spin_lock(&tcon->open_file_lock);
list_for_each_safe(tmp, tmp1, &tcon->openFileList) {
open_file = list_entry(tmp, struct cifsFileInfo, tlist);
open_file->invalidHandle = true;
open_file->oplock_break_cancelled = true;
}
- spin_unlock(&cifs_file_list_lock);
+ spin_unlock(&tcon->open_file_lock);
/*
* BB Add call to invalidate_inodes(sb) for all superblocks mounted
* to this tcon.
if (rc)
goto out;
- /*
- * FIXME: check if wsize needs updated due to negotiated smb buffer
- * size shrinking
- */
atomic_inc(&tconInfoReconnectCount);
/* tell server Unix caps we support */
return -EINVAL;
}
+static int
+decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr)
+{
+ int rc = 0;
+ u16 count;
+ char *guid = pSMBr->u.extended_response.GUID;
+ struct TCP_Server_Info *server = ses->server;
+
+ count = get_bcc(&pSMBr->hdr);
+ if (count < SMB1_CLIENT_GUID_SIZE)
+ return -EIO;
+
+ spin_lock(&cifs_tcp_ses_lock);
+ if (server->srv_count > 1) {
+ spin_unlock(&cifs_tcp_ses_lock);
+ if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) {
+ cifs_dbg(FYI, "server UID changed\n");
+ memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE);
+ }
+ } else {
+ spin_unlock(&cifs_tcp_ses_lock);
+ memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE);
+ }
+
+ if (count == SMB1_CLIENT_GUID_SIZE) {
+ server->sec_ntlmssp = true;
+ } else {
+ count -= SMB1_CLIENT_GUID_SIZE;
+ rc = decode_negTokenInit(
+ pSMBr->u.extended_response.SecurityBlob, count, server);
+ if (rc != 1)
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int
+cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required)
+{
+ bool srv_sign_required = server->sec_mode & server->vals->signing_required;
+ bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled;
+ bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN;
+
+ /*
+ * Is signing required by mnt options? If not then check
+ * global_secflags to see if it is there.
+ */
+ if (!mnt_sign_required)
+ mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) ==
+ CIFSSEC_MUST_SIGN);
+
+ /*
+ * If signing is required then it's automatically enabled too,
+ * otherwise, check to see if the secflags allow it.
+ */
+ mnt_sign_enabled = mnt_sign_required ? mnt_sign_required :
+ (global_secflags & CIFSSEC_MAY_SIGN);
+
+ /* If server requires signing, does client allow it? */
+ if (srv_sign_required) {
+ if (!mnt_sign_enabled) {
+ cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!");
+ return -ENOTSUPP;
+ }
+ server->sign = true;
+ }
+
+ /* If client requires signing, does server allow it? */
+ if (mnt_sign_required) {
+ if (!srv_sign_enabled) {
+ cifs_dbg(VFS, "Server does not support signing!");
+ return -ENOTSUPP;
+ }
+ server->sign = true;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+static int
+decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr)
+{
+ __s16 tmp;
+ struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr;
+
+ if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT)
+ return -EOPNOTSUPP;
+
+ server->sec_mode = le16_to_cpu(rsp->SecurityMode);
+ server->maxReq = min_t(unsigned int,
+ le16_to_cpu(rsp->MaxMpxCount),
+ cifs_max_pending);
+ set_credits(server, server->maxReq);
+ server->maxBuf = le16_to_cpu(rsp->MaxBufSize);
+ /* even though we do not use raw we might as well set this
+ accurately, in case we ever find a need for it */
+ if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) {
+ server->max_rw = 0xFF00;
+ server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE;
+ } else {
+ server->max_rw = 0;/* do not need to use raw anyway */
+ server->capabilities = CAP_MPX_MODE;
+ }
+ tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone);
+ if (tmp == -1) {
+ /* OS/2 often does not set timezone therefore
+ * we must use server time to calc time zone.
+ * Could deviate slightly from the right zone.
+ * Smallest defined timezone difference is 15 minutes
+ * (i.e. Nepal). Rounding up/down is done to match
+ * this requirement.
+ */
+ int val, seconds, remain, result;
+ struct timespec ts, utc;
+ utc = CURRENT_TIME;
+ ts = cnvrtDosUnixTm(rsp->SrvTime.Date,
+ rsp->SrvTime.Time, 0);
+ cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n",
+ (int)ts.tv_sec, (int)utc.tv_sec,
+ (int)(utc.tv_sec - ts.tv_sec));
+ val = (int)(utc.tv_sec - ts.tv_sec);
+ seconds = abs(val);
+ result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ;
+ remain = seconds % MIN_TZ_ADJ;
+ if (remain >= (MIN_TZ_ADJ / 2))
+ result += MIN_TZ_ADJ;
+ if (val < 0)
+ result = -result;
+ server->timeAdj = result;
+ } else {
+ server->timeAdj = (int)tmp;
+ server->timeAdj *= 60; /* also in seconds */
+ }
+ cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj);
+
+
+ /* BB get server time for time conversions and add
+ code to use it and timezone since this is not UTC */
+
+ if (rsp->EncryptionKeyLength ==
+ cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
+ memcpy(server->cryptkey, rsp->EncryptionKey,
+ CIFS_CRYPTO_KEY_SIZE);
+ } else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
+ return -EIO; /* need cryptkey unless plain text */
+ }
+
+ cifs_dbg(FYI, "LANMAN negotiated\n");
+ return 0;
+}
+#else
+static inline int
+decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr)
+{
+ cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n");
+ return -EOPNOTSUPP;
+}
+#endif
+
+static bool
+should_set_ext_sec_flag(enum securityEnum sectype)
+{
+ switch (sectype) {
+ case RawNTLMSSP:
+ case Kerberos:
+ return true;
+ case Unspecified:
+ if (global_secflags &
+ (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP))
+ return true;
+ /* Fallthrough */
+ default:
+ return false;
+ }
+}
+
int
CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses)
{
int rc = 0;
int bytes_returned;
int i;
- struct TCP_Server_Info *server;
+ struct TCP_Server_Info *server = ses->server;
u16 count;
- unsigned int secFlags;
- if (ses->server)
- server = ses->server;
- else {
- rc = -EIO;
- return rc;
+ if (!server) {
+ WARN(1, "%s: server is NULL!\n", __func__);
+ return -EIO;
}
+
rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
(void **) &pSMB, (void **) &pSMBr);
if (rc)
return rc;
- /* if any of auth flags (ie not sign or seal) are overriden use them */
- if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL)))
- secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */
- else /* if override flags set only sign/seal OR them with global auth */
- secFlags = global_secflags | ses->overrideSecFlg;
-
- cifs_dbg(FYI, "secFlags 0x%x\n", secFlags);
-
pSMB->hdr.Mid = get_next_mid(server);
pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS);
- if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
- pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
- else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) {
- cifs_dbg(FYI, "Kerberos only mechanism, enable extended security\n");
- pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
- } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
- pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
- else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) {
- cifs_dbg(FYI, "NTLMSSP only mechanism, enable extended security\n");
+ if (should_set_ext_sec_flag(ses->sectype)) {
+ cifs_dbg(FYI, "Requesting extended security.");
pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
}
could not negotiate a common dialect */
rc = -EOPNOTSUPP;
goto neg_err_exit;
-#ifdef CONFIG_CIFS_WEAK_PW_HASH
- } else if ((pSMBr->hdr.WordCount == 13)
- && ((server->dialect == LANMAN_PROT)
- || (server->dialect == LANMAN2_PROT))) {
- __s16 tmp;
- struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr;
-
- if ((secFlags & CIFSSEC_MAY_LANMAN) ||
- (secFlags & CIFSSEC_MAY_PLNTXT))
- server->secType = LANMAN;
- else {
- cifs_dbg(VFS, "mount failed weak security disabled in /proc/fs/cifs/SecurityFlags\n");
- rc = -EOPNOTSUPP;
- goto neg_err_exit;
- }
- server->sec_mode = le16_to_cpu(rsp->SecurityMode);
- server->maxReq = min_t(unsigned int,
- le16_to_cpu(rsp->MaxMpxCount),
- cifs_max_pending);
- set_credits(server, server->maxReq);
- 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 */
- if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) {
- server->max_rw = 0xFF00;
- server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE;
- } else {
- server->max_rw = 0;/* do not need to use raw anyway */
- server->capabilities = CAP_MPX_MODE;
- }
- tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone);
- if (tmp == -1) {
- /* OS/2 often does not set timezone therefore
- * we must use server time to calc time zone.
- * Could deviate slightly from the right zone.
- * Smallest defined timezone difference is 15 minutes
- * (i.e. Nepal). Rounding up/down is done to match
- * this requirement.
- */
- int val, seconds, remain, result;
- struct timespec ts, utc;
- utc = CURRENT_TIME;
- ts = cnvrtDosUnixTm(rsp->SrvTime.Date,
- rsp->SrvTime.Time, 0);
- cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n",
- (int)ts.tv_sec, (int)utc.tv_sec,
- (int)(utc.tv_sec - ts.tv_sec));
- val = (int)(utc.tv_sec - ts.tv_sec);
- seconds = abs(val);
- result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ;
- remain = seconds % MIN_TZ_ADJ;
- if (remain >= (MIN_TZ_ADJ / 2))
- result += MIN_TZ_ADJ;
- if (val < 0)
- result = -result;
- server->timeAdj = result;
- } else {
- server->timeAdj = (int)tmp;
- server->timeAdj *= 60; /* also in seconds */
- }
- cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj);
-
-
- /* BB get server time for time conversions and add
- code to use it and timezone since this is not UTC */
-
- if (rsp->EncryptionKeyLength ==
- cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
- memcpy(ses->server->cryptkey, rsp->EncryptionKey,
- CIFS_CRYPTO_KEY_SIZE);
- } else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
- rc = -EIO; /* need cryptkey unless plain text */
- goto neg_err_exit;
- }
-
- cifs_dbg(FYI, "LANMAN negotiated\n");
- /* we will not end up setting signing flags - as no signing
- was in LANMAN and server did not return the flags on */
- goto signing_check;
-#else /* weak security disabled */
} else if (pSMBr->hdr.WordCount == 13) {
- cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n");
- rc = -EOPNOTSUPP;
-#endif /* WEAK_PW_HASH */
- goto neg_err_exit;
+ server->negflavor = CIFS_NEGFLAVOR_LANMAN;
+ rc = decode_lanman_negprot_rsp(server, pSMBr);
+ goto signing_check;
} else if (pSMBr->hdr.WordCount != 17) {
/* unknown wct */
rc = -EOPNOTSUPP;
goto neg_err_exit;
}
- /* else wct == 17 NTLM */
+ /* else wct == 17, NTLM or better */
+
server->sec_mode = pSMBr->SecurityMode;
if ((server->sec_mode & SECMODE_USER) == 0)
cifs_dbg(FYI, "share mode security\n");
- if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0)
-#ifdef CONFIG_CIFS_WEAK_PW_HASH
- if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0)
-#endif /* CIFS_WEAK_PW_HASH */
- cifs_dbg(VFS, "Server requests plain text password but client support disabled\n");
-
- if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
- server->secType = NTLMv2;
- else if (secFlags & CIFSSEC_MAY_NTLM)
- server->secType = NTLM;
- else if (secFlags & CIFSSEC_MAY_NTLMV2)
- server->secType = NTLMv2;
- else if (secFlags & CIFSSEC_MAY_KRB5)
- server->secType = Kerberos;
- else if (secFlags & CIFSSEC_MAY_NTLMSSP)
- server->secType = RawNTLMSSP;
- else if (secFlags & CIFSSEC_MAY_LANMAN)
- server->secType = LANMAN;
- else {
- rc = -EOPNOTSUPP;
- cifs_dbg(VFS, "Invalid security type\n");
- goto neg_err_exit;
- }
- /* else ... any others ...? */
-
/* one byte, so no need to convert this or EncryptionKeyLen from
little endian */
server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount),
server->capabilities = le32_to_cpu(pSMBr->Capabilities);
server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone);
server->timeAdj *= 60;
+
if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
+ server->negflavor = CIFS_NEGFLAVOR_UNENCAP;
memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey,
CIFS_CRYPTO_KEY_SIZE);
- } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC ||
- server->capabilities & CAP_EXTENDED_SECURITY) &&
- (pSMBr->EncryptionKeyLength == 0)) {
- /* decode security blob */
- count = get_bcc(&pSMBr->hdr);
- if (count < 16) {
- rc = -EIO;
- goto neg_err_exit;
- }
- spin_lock(&cifs_tcp_ses_lock);
- if (server->srv_count > 1) {
- spin_unlock(&cifs_tcp_ses_lock);
- if (memcmp(server->server_GUID,
- pSMBr->u.extended_response.
- GUID, 16) != 0) {
- cifs_dbg(FYI, "server UID changed\n");
- memcpy(server->server_GUID,
- pSMBr->u.extended_response.GUID,
- 16);
- }
- } else {
- spin_unlock(&cifs_tcp_ses_lock);
- memcpy(server->server_GUID,
- pSMBr->u.extended_response.GUID, 16);
- }
-
- if (count == 16) {
- server->secType = RawNTLMSSP;
- } else {
- rc = decode_negTokenInit(pSMBr->u.extended_response.
- SecurityBlob, count - 16,
- server);
- if (rc == 1)
- rc = 0;
- else
- rc = -EINVAL;
- if (server->secType == Kerberos) {
- if (!server->sec_kerberos &&
- !server->sec_mskerberos)
- rc = -EOPNOTSUPP;
- } else if (server->secType == RawNTLMSSP) {
- if (!server->sec_ntlmssp)
- rc = -EOPNOTSUPP;
- } else
- rc = -EOPNOTSUPP;
- }
+ } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC ||
+ server->capabilities & CAP_EXTENDED_SECURITY) {
+ server->negflavor = CIFS_NEGFLAVOR_EXTENDED;
+ rc = decode_ext_sec_blob(ses, pSMBr);
} else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
rc = -EIO; /* no crypt key only if plain text pwd */
- goto neg_err_exit;
- } else
- server->capabilities &= ~CAP_EXTENDED_SECURITY;
-
-#ifdef CONFIG_CIFS_WEAK_PW_HASH
-signing_check:
-#endif
- if ((secFlags & CIFSSEC_MAY_SIGN) == 0) {
- /* MUST_SIGN already includes the MAY_SIGN FLAG
- so if this is zero it means that signing is disabled */
- cifs_dbg(FYI, "Signing disabled\n");
- if (server->sec_mode & SECMODE_SIGN_REQUIRED) {
- cifs_dbg(VFS, "Server requires packet signing to be enabled in /proc/fs/cifs/SecurityFlags\n");
- rc = -EOPNOTSUPP;
- }
- server->sec_mode &=
- ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
- } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) {
- /* signing required */
- cifs_dbg(FYI, "Must sign - secFlags 0x%x\n", secFlags);
- if ((server->sec_mode &
- (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) {
- cifs_dbg(VFS, "signing required but server lacks support\n");
- rc = -EOPNOTSUPP;
- } else
- server->sec_mode |= SECMODE_SIGN_REQUIRED;
} else {
- /* signing optional ie CIFSSEC_MAY_SIGN */
- if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0)
- server->sec_mode &=
- ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
+ server->negflavor = CIFS_NEGFLAVOR_UNENCAP;
+ server->capabilities &= ~CAP_EXTENDED_SECURITY;
}
+signing_check:
+ if (!rc)
+ rc = cifs_enable_signing(server, ses->sign);
neg_err_exit:
cifs_buf_release(pSMB);
{
struct TCP_Server_Info *server = mid->callback_data;
+ mutex_lock(&server->srv_mutex);
DeleteMidQEntry(mid);
+ mutex_unlock(&server->srv_mutex);
add_credits(server, 1, CIFS_ECHO_OP);
}
pSMB->hdr.Mid = get_next_mid(ses->server);
- if (ses->server->sec_mode &
- (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
- pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
+ if (ses->server->sign)
+ pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
pSMB->hdr.Uid = ses->Suid;
int rc = 0;
int bytes_returned;
int name_len;
- int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
+ int remap = cifs_remap(cifs_sb);
DelFileRetry:
rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
int rc = 0;
int bytes_returned;
int name_len;
- int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
+ int remap = cifs_remap(cifs_sb);
cifs_dbg(FYI, "In CIFSSMBRmDir\n");
RmDirRetry:
CREATE_DIRECTORY_RSP *pSMBr = NULL;
int bytes_returned;
int name_len;
- int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
+ int remap = cifs_remap(cifs_sb);
cifs_dbg(FYI, "In CIFSSMBMkDir\n");
MkDirRetry:
}
int
-CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, const int openDisposition,
- const int access_flags, const int create_options, __u16 *netfid,
- int *pOplock, FILE_ALL_INFO *pfile_info,
- const struct nls_table *nls_codepage, int remap)
+CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock,
+ FILE_ALL_INFO *buf)
{
int rc = -EACCES;
- OPEN_REQ *pSMB = NULL;
- OPEN_RSP *pSMBr = NULL;
+ OPEN_REQ *req = NULL;
+ OPEN_RSP *rsp = NULL;
int bytes_returned;
int name_len;
__u16 count;
+ struct cifs_sb_info *cifs_sb = oparms->cifs_sb;
+ struct cifs_tcon *tcon = oparms->tcon;
+ int remap = cifs_remap(cifs_sb);
+ const struct nls_table *nls = cifs_sb->local_nls;
+ int create_options = oparms->create_options;
+ int desired_access = oparms->desired_access;
+ int disposition = oparms->disposition;
+ const char *path = oparms->path;
openRetry:
- rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
- (void **) &pSMBr);
+ rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req,
+ (void **)&rsp);
if (rc)
return rc;
- pSMB->AndXCommand = 0xFF; /* none */
+ /* no commands go after this */
+ req->AndXCommand = 0xFF;
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- count = 1; /* account for one byte pad to word boundary */
- name_len =
- cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
- fileName, PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
+ if (req->hdr.Flags2 & SMBFLG2_UNICODE) {
+ /* account for one byte pad to word boundary */
+ count = 1;
+ name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1),
+ path, PATH_MAX, nls, remap);
+ /* trailing null */
+ name_len++;
name_len *= 2;
- pSMB->NameLength = cpu_to_le16(name_len);
- } else { /* BB improve check for buffer overruns BB */
- count = 0; /* no pad */
- name_len = strnlen(fileName, PATH_MAX);
- name_len++; /* trailing null */
- pSMB->NameLength = cpu_to_le16(name_len);
- strncpy(pSMB->fileName, fileName, name_len);
+ req->NameLength = cpu_to_le16(name_len);
+ } else {
+ /* BB improve check for buffer overruns BB */
+ /* no pad */
+ count = 0;
+ name_len = strnlen(path, PATH_MAX);
+ /* trailing null */
+ name_len++;
+ req->NameLength = cpu_to_le16(name_len);
+ strncpy(req->fileName, path, name_len);
}
- if (*pOplock & REQ_OPLOCK)
- pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
- else if (*pOplock & REQ_BATCHOPLOCK)
- pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
- pSMB->DesiredAccess = cpu_to_le32(access_flags);
- pSMB->AllocationSize = 0;
- /* set file as system file if special file such
- as fifo and server expecting SFU style and
- no Unix extensions */
+
+ if (*oplock & REQ_OPLOCK)
+ req->OpenFlags = cpu_to_le32(REQ_OPLOCK);
+ else if (*oplock & REQ_BATCHOPLOCK)
+ req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
+
+ req->DesiredAccess = cpu_to_le32(desired_access);
+ req->AllocationSize = 0;
+
+ /*
+ * Set file as system file if special file such as fifo and server
+ * expecting SFU style and no Unix extensions.
+ */
if (create_options & CREATE_OPTION_SPECIAL)
- pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
+ req->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
else
- pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
+ req->FileAttributes = cpu_to_le32(ATTR_NORMAL);
- /* XP does not handle ATTR_POSIX_SEMANTICS */
- /* but it helps speed up case sensitive checks for other
- servers such as Samba */
+ /*
+ * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case
+ * sensitive checks for other servers such as Samba.
+ */
if (tcon->ses->capabilities & CAP_UNIX)
- pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
+ req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
if (create_options & CREATE_OPTION_READONLY)
- pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);
+ req->FileAttributes |= cpu_to_le32(ATTR_READONLY);
+
+ req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
+ req->CreateDisposition = cpu_to_le32(disposition);
+ req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
- pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
- pSMB->CreateDisposition = cpu_to_le32(openDisposition);
- pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
/* BB Expirement with various impersonation levels and verify */
- pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
- pSMB->SecurityFlags =
- SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
+ req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
+ req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY;
count += name_len;
- inc_rfc1001_len(pSMB, count);
+ inc_rfc1001_len(req, count);
- pSMB->ByteCount = cpu_to_le16(count);
- /* long_op set to 1 to allow for oplock break timeouts */
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *)pSMBr, &bytes_returned, 0);
+ req->ByteCount = cpu_to_le16(count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req,
+ (struct smb_hdr *)rsp, &bytes_returned, 0);
cifs_stats_inc(&tcon->stats.cifs_stats.num_opens);
if (rc) {
cifs_dbg(FYI, "Error in Open = %d\n", rc);
- } else {
- *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
- *netfid = pSMBr->Fid; /* cifs fid stays in le */
- /* Let caller know file was created so we can set the mode. */
- /* Do we care about the CreateAction in any other cases? */
- if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
- *pOplock |= CIFS_CREATE_ACTION;
- if (pfile_info) {
- memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime,
- 36 /* CreationTime to Attributes */);
- /* the file_info buf is endian converted by caller */
- pfile_info->AllocationSize = pSMBr->AllocationSize;
- pfile_info->EndOfFile = pSMBr->EndOfFile;
- pfile_info->NumberOfLinks = cpu_to_le32(1);
- pfile_info->DeletePending = 0;
- }
+ cifs_buf_release(req);
+ if (rc == -EAGAIN)
+ goto openRetry;
+ return rc;
}
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto openRetry;
+ /* 1 byte no need to le_to_cpu */
+ *oplock = rsp->OplockLevel;
+ /* cifs fid stays in le */
+ oparms->fid->netfid = rsp->Fid;
+
+ /* Let caller know file was created so we can set the mode. */
+ /* Do we care about the CreateAction in any other cases? */
+ if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction)
+ *oplock |= CIFS_CREATE_ACTION;
+
+ if (buf) {
+ /* copy from CreationTime to Attributes */
+ memcpy((char *)buf, (char *)&rsp->CreationTime, 36);
+ /* the file_info buf is endian converted by caller */
+ buf->AllocationSize = rsp->AllocationSize;
+ buf->EndOfFile = rsp->EndOfFile;
+ buf->NumberOfLinks = cpu_to_le32(1);
+ buf->DeletePending = 0;
+ }
+
+ cifs_buf_release(req);
return rc;
}
* current bigbuf.
*/
static int
-cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+discard_remaining_data(struct TCP_Server_Info *server)
{
unsigned int rfclen = get_rfc1002_length(server->smallbuf);
int remaining = rfclen + 4 - server->total_read;
- struct cifs_readdata *rdata = mid->callback_data;
while (remaining > 0) {
int length;
remaining -= length;
}
- dequeue_mid(mid, rdata->result);
return 0;
}
+static int
+cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+{
+ int length;
+ struct cifs_readdata *rdata = mid->callback_data;
+
+ length = discard_remaining_data(server);
+ dequeue_mid(mid, rdata->result);
+ return length;
+}
+
int
cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
{
return length;
server->total_read += length;
+ if (server->ops->is_status_pending &&
+ server->ops->is_status_pending(buf, server, 0)) {
+ discard_remaining_data(server);
+ return -1;
+ }
+
/* Was the SMB read successful? */
rdata->result = server->ops->map_error(buf, false);
if (rdata->result != 0) {
return length;
server->total_read += length;
- rdata->bytes = length;
cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n",
server->total_read, buflen, data_len);
switch (mid->mid_state) {
case MID_RESPONSE_RECEIVED:
/* result already set, check signature */
- if (server->sec_mode &
- (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) {
+ if (server->sign) {
int rc = 0;
rc = cifs_verify_signature(&rqst, server,
rc);
}
/* FIXME: should this be counted toward the initiating task? */
- task_io_account_read(rdata->bytes);
- cifs_stats_bytes_read(tcon, rdata->bytes);
+ task_io_account_read(rdata->got_bytes);
+ cifs_stats_bytes_read(tcon, rdata->got_bytes);
break;
case MID_REQUEST_SUBMITTED:
case MID_RETRY_NEEDED:
rdata->result = -EAGAIN;
+ if (server->sign && rdata->got_bytes)
+ /* reset bytes number since we can not check a sign */
+ rdata->got_bytes = 0;
+ /* FIXME: should this be counted toward the initiating task? */
+ task_io_account_read(rdata->got_bytes);
+ cifs_stats_bytes_read(tcon, rdata->got_bytes);
break;
default:
rdata->result = -EIO;
}
queue_work(cifsiod_wq, &rdata->work);
+ mutex_lock(&server->srv_mutex);
DeleteMidQEntry(mid);
+ mutex_unlock(&server->srv_mutex);
add_credits(server, 1, 0);
}
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
if (*buf) {
- if (resp_buf_type == CIFS_SMALL_BUFFER)
- cifs_small_buf_release(iov[0].iov_base);
- else if (resp_buf_type == CIFS_LARGE_BUFFER)
- cifs_buf_release(iov[0].iov_base);
+ free_rsp_buf(resp_buf_type, iov[0].iov_base);
} else if (resp_buf_type != CIFS_NO_BUFFER) {
/* return buffer to caller to free */
*buf = iov[0].iov_base;
static void
cifs_writev_requeue(struct cifs_writedata *wdata)
{
- int i, rc;
- struct inode *inode = wdata->cfile->dentry->d_inode;
+ int i, rc = 0;
+ struct inode *inode = d_inode(wdata->cfile->dentry);
struct TCP_Server_Info *server;
+ unsigned int rest_len;
- for (i = 0; i < wdata->nr_pages; i++) {
- lock_page(wdata->pages[i]);
- clear_page_dirty_for_io(wdata->pages[i]);
- }
-
+ server = tlink_tcon(wdata->cfile->tlink)->ses->server;
+ i = 0;
+ rest_len = wdata->bytes;
do {
- server = tlink_tcon(wdata->cfile->tlink)->ses->server;
- rc = server->ops->async_writev(wdata);
- } while (rc == -EAGAIN);
+ struct cifs_writedata *wdata2;
+ unsigned int j, nr_pages, wsize, tailsz, cur_len;
+
+ wsize = server->ops->wp_retry_size(inode);
+ if (wsize < rest_len) {
+ nr_pages = wsize / PAGE_CACHE_SIZE;
+ if (!nr_pages) {
+ rc = -ENOTSUPP;
+ break;
+ }
+ cur_len = nr_pages * PAGE_CACHE_SIZE;
+ tailsz = PAGE_CACHE_SIZE;
+ } else {
+ nr_pages = DIV_ROUND_UP(rest_len, PAGE_CACHE_SIZE);
+ cur_len = rest_len;
+ tailsz = rest_len - (nr_pages - 1) * PAGE_CACHE_SIZE;
+ }
- for (i = 0; i < wdata->nr_pages; i++) {
- unlock_page(wdata->pages[i]);
- if (rc != 0) {
- SetPageError(wdata->pages[i]);
- end_page_writeback(wdata->pages[i]);
- page_cache_release(wdata->pages[i]);
+ wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete);
+ if (!wdata2) {
+ rc = -ENOMEM;
+ break;
}
- }
+
+ for (j = 0; j < nr_pages; j++) {
+ wdata2->pages[j] = wdata->pages[i + j];
+ lock_page(wdata2->pages[j]);
+ clear_page_dirty_for_io(wdata2->pages[j]);
+ }
+
+ wdata2->sync_mode = wdata->sync_mode;
+ wdata2->nr_pages = nr_pages;
+ wdata2->offset = page_offset(wdata2->pages[0]);
+ wdata2->pagesz = PAGE_CACHE_SIZE;
+ wdata2->tailsz = tailsz;
+ wdata2->bytes = cur_len;
+
+ wdata2->cfile = find_writable_file(CIFS_I(inode), false);
+ if (!wdata2->cfile) {
+ cifs_dbg(VFS, "No writable handles for inode\n");
+ rc = -EBADF;
+ break;
+ }
+ wdata2->pid = wdata2->cfile->pid;
+ rc = server->ops->async_writev(wdata2, cifs_writedata_release);
+
+ for (j = 0; j < nr_pages; j++) {
+ unlock_page(wdata2->pages[j]);
+ if (rc != 0 && rc != -EAGAIN) {
+ SetPageError(wdata2->pages[j]);
+ end_page_writeback(wdata2->pages[j]);
+ page_cache_release(wdata2->pages[j]);
+ }
+ }
+
+ if (rc) {
+ kref_put(&wdata2->refcount, cifs_writedata_release);
+ if (rc == -EAGAIN)
+ continue;
+ break;
+ }
+
+ rest_len -= cur_len;
+ i += nr_pages;
+ } while (i < wdata->nr_pages);
mapping_set_error(inode->i_mapping, rc);
kref_put(&wdata->refcount, cifs_writedata_release);
{
struct cifs_writedata *wdata = container_of(work,
struct cifs_writedata, work);
- struct inode *inode = wdata->cfile->dentry->d_inode;
+ struct inode *inode = d_inode(wdata->cfile->dentry);
int i = 0;
if (wdata->result == 0) {
{
struct cifs_writedata *wdata;
- /* this would overflow */
- if (nr_pages == 0) {
- cifs_dbg(VFS, "%s: called with nr_pages == 0!\n", __func__);
- return NULL;
- }
-
/* writedata + number of page pointers */
wdata = kzalloc(sizeof(*wdata) +
- sizeof(struct page *) * (nr_pages - 1), GFP_NOFS);
+ sizeof(struct page *) * nr_pages, GFP_NOFS);
if (wdata != NULL) {
kref_init(&wdata->refcount);
INIT_LIST_HEAD(&wdata->list);
{
struct cifs_writedata *wdata = mid->callback_data;
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
+ struct TCP_Server_Info *server = tcon->ses->server;
unsigned int written;
WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf;
}
queue_work(cifsiod_wq, &wdata->work);
+ mutex_lock(&server->srv_mutex);
DeleteMidQEntry(mid);
+ mutex_unlock(&server->srv_mutex);
add_credits(tcon->ses->server, 1, 0);
}
/* cifs_async_writev - send an async write, and set up mid to handle result */
int
-cifs_async_writev(struct cifs_writedata *wdata)
+cifs_async_writev(struct cifs_writedata *wdata,
+ void (*release)(struct kref *kref))
{
int rc = -EACCES;
WRITE_REQ *smb = NULL;
if (rc == 0)
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes);
else
- kref_put(&wdata->refcount, cifs_writedata_release);
+ kref_put(&wdata->refcount, release);
async_writev_out:
cifs_small_buf_release(smb);
}
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
- if (resp_buf_type == CIFS_SMALL_BUFFER)
- cifs_small_buf_release(iov[0].iov_base);
- else if (resp_buf_type == CIFS_LARGE_BUFFER)
- cifs_buf_release(iov[0].iov_base);
+ free_rsp_buf(resp_buf_type, iov[0].iov_base);
/* Note: On -EAGAIN error only caller can retry on handle based calls
since file handle passed in no longer valid */
}
parm_data = (struct cifs_posix_lock *)
((char *)&pSMBr->hdr.Protocol + data_offset);
- if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK))
+ if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK))
pLockData->fl_type = F_UNLCK;
else {
if (parm_data->lock_type ==
- __constant_cpu_to_le16(CIFS_RDLCK))
+ cpu_to_le16(CIFS_RDLCK))
pLockData->fl_type = F_RDLCK;
else if (parm_data->lock_type ==
- __constant_cpu_to_le16(CIFS_WRLCK))
+ cpu_to_le16(CIFS_WRLCK))
pLockData->fl_type = F_WRLCK;
pLockData->fl_start = le64_to_cpu(parm_data->start);
if (pSMB)
cifs_small_buf_release(pSMB);
- if (resp_buf_type == CIFS_SMALL_BUFFER)
- cifs_small_buf_release(iov[0].iov_base);
- else if (resp_buf_type == CIFS_LARGE_BUFFER)
- cifs_buf_release(iov[0].iov_base);
+ free_rsp_buf(resp_buf_type, iov[0].iov_base);
/* Note: On -EAGAIN error only caller can retry on handle based calls
since file handle passed in no longer valid */
int bytes_returned;
int name_len, name_len2;
__u16 count;
- int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
+ int remap = cifs_remap(cifs_sb);
cifs_dbg(FYI, "In CIFSSMBRename\n");
renameRetry:
int
CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon,
const char *fromName, const char *toName,
- const struct nls_table *nls_codepage)
+ const struct nls_table *nls_codepage, int remap)
{
TRANSACTION2_SPI_REQ *pSMB = NULL;
TRANSACTION2_SPI_RSP *pSMBr = NULL;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName,
- /* find define for this maxpathcomponent */
- PATH_MAX, nls_codepage);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName,
+ /* find define for this maxpathcomponent */
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len_target =
- cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX
- /* find define for this maxpathcomponent */
- , nls_codepage);
+ cifsConvertToUTF16((__le16 *) data_offset, toName,
+ /* find define for this maxpathcomponent */
+ PATH_MAX, nls_codepage, remap);
name_len_target++; /* trailing null */
name_len_target *= 2;
} else { /* BB improve the check for buffer overruns BB */
int bytes_returned;
int name_len, name_len2;
__u16 count;
- int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
+ int remap = cifs_remap(cifs_sb);
cifs_dbg(FYI, "In CIFSCreateHardLink\n");
winCreateHardLinkRetry:
int
CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
const unsigned char *searchName, char **symlinkinfo,
- const struct nls_table *nls_codepage)
+ const struct nls_table *nls_codepage, int remap)
{
/* SMB_QUERY_FILE_UNIX_LINK */
TRANSACTION2_QPI_REQ *pSMB = NULL;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName,
+ searchName, PATH_MAX, nls_codepage,
+ remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
return rc;
}
-#ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
/*
* Recent Windows versions now create symlinks more frequently
* and they use the "reparse point" mechanism below. We can of course
* it is not compiled in by default until callers fixed up and more tested.
*/
int
-CIFSSMBQueryReparseLinkInfo(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName,
- char *symlinkinfo, const int buflen, __u16 fid,
- const struct nls_table *nls_codepage)
+CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
+ __u16 fid, char **symlinkinfo,
+ const struct nls_table *nls_codepage)
{
int rc = 0;
int bytes_returned;
struct smb_com_transaction_ioctl_req *pSMB;
struct smb_com_transaction_ioctl_rsp *pSMBr;
+ bool is_unicode;
+ unsigned int sub_len;
+ char *sub_start;
+ struct reparse_symlink_data *reparse_buf;
+ struct reparse_posix_data *posix_buf;
+ __u32 data_offset, data_count;
+ char *end_of_smb;
- cifs_dbg(FYI, "In Windows reparse style QueryLink for path %s\n",
- searchName);
+ cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid);
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
(void **) &pSMBr);
if (rc)
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc);
- } else { /* decode response */
- __u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
- __u32 data_count = le32_to_cpu(pSMBr->DataCount);
- if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) {
- /* BB also check enough total bytes returned */
- rc = -EIO; /* bad smb */
+ goto qreparse_out;
+ }
+
+ data_offset = le32_to_cpu(pSMBr->DataOffset);
+ data_count = le32_to_cpu(pSMBr->DataCount);
+ if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) {
+ /* BB also check enough total bytes returned */
+ rc = -EIO; /* bad smb */
+ goto qreparse_out;
+ }
+ if (!data_count || (data_count > 2048)) {
+ rc = -EIO;
+ cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n");
+ goto qreparse_out;
+ }
+ end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount;
+ reparse_buf = (struct reparse_symlink_data *)
+ ((char *)&pSMBr->hdr.Protocol + data_offset);
+ if ((char *)reparse_buf >= end_of_smb) {
+ rc = -EIO;
+ goto qreparse_out;
+ }
+ if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) {
+ cifs_dbg(FYI, "NFS style reparse tag\n");
+ posix_buf = (struct reparse_posix_data *)reparse_buf;
+
+ if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) {
+ cifs_dbg(FYI, "unsupported file type 0x%llx\n",
+ le64_to_cpu(posix_buf->InodeType));
+ rc = -EOPNOTSUPP;
goto qreparse_out;
}
- if (data_count && (data_count < 2048)) {
- char *end_of_smb = 2 /* sizeof byte count */ +
- get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount;
-
- struct reparse_data *reparse_buf =
- (struct reparse_data *)
- ((char *)&pSMBr->hdr.Protocol
- + data_offset);
- if ((char *)reparse_buf >= end_of_smb) {
- rc = -EIO;
- goto qreparse_out;
- }
- if ((reparse_buf->LinkNamesBuf +
- reparse_buf->TargetNameOffset +
- reparse_buf->TargetNameLen) > end_of_smb) {
- cifs_dbg(FYI, "reparse buf beyond SMB\n");
- rc = -EIO;
- goto qreparse_out;
- }
-
- if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
- cifs_from_ucs2(symlinkinfo, (__le16 *)
- (reparse_buf->LinkNamesBuf +
- reparse_buf->TargetNameOffset),
- buflen,
- reparse_buf->TargetNameLen,
- nls_codepage, 0);
- } else { /* ASCII names */
- strncpy(symlinkinfo,
- reparse_buf->LinkNamesBuf +
- reparse_buf->TargetNameOffset,
- min_t(const int, buflen,
- reparse_buf->TargetNameLen));
- }
- } else {
+ is_unicode = true;
+ sub_len = le16_to_cpu(reparse_buf->ReparseDataLength);
+ if (posix_buf->PathBuffer + sub_len > end_of_smb) {
+ cifs_dbg(FYI, "reparse buf beyond SMB\n");
rc = -EIO;
- cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n");
+ goto qreparse_out;
}
- symlinkinfo[buflen] = 0; /* just in case so the caller
- does not go off the end of the buffer */
- cifs_dbg(FYI, "readlink result - %s\n", symlinkinfo);
+ *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer,
+ sub_len, is_unicode, nls_codepage);
+ goto qreparse_out;
+ } else if (reparse_buf->ReparseTag !=
+ cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) {
+ rc = -EOPNOTSUPP;
+ goto qreparse_out;
+ }
+
+ /* Reparse tag is NTFS symlink */
+ sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) +
+ reparse_buf->PathBuffer;
+ sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength);
+ if (sub_start + sub_len > end_of_smb) {
+ cifs_dbg(FYI, "reparse buf beyond SMB\n");
+ rc = -EIO;
+ goto qreparse_out;
}
+ if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
+ is_unicode = true;
+ else
+ is_unicode = false;
+ /* BB FIXME investigate remapping reserved chars here */
+ *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode,
+ nls_codepage);
+ if (!*symlinkinfo)
+ rc = -ENOMEM;
qreparse_out:
cifs_buf_release(pSMB);
- /* Note: On -EAGAIN error only caller can retry on handle based calls
- since file handle passed in no longer valid */
+ /*
+ * Note: On -EAGAIN error only caller can retry on handle based calls
+ * since file handle passed in no longer valid.
+ */
+ return rc;
+}
+
+int
+CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
+ __u16 fid)
+{
+ int rc = 0;
+ int bytes_returned;
+ struct smb_com_transaction_compr_ioctl_req *pSMB;
+ struct smb_com_transaction_ioctl_rsp *pSMBr;
+
+ cifs_dbg(FYI, "Set compression for %u\n", fid);
+ rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT);
+
+ pSMB->TotalParameterCount = 0;
+ pSMB->TotalDataCount = cpu_to_le32(2);
+ pSMB->MaxParameterCount = 0;
+ pSMB->MaxDataCount = 0;
+ pSMB->MaxSetupCount = 4;
+ pSMB->Reserved = 0;
+ pSMB->ParameterOffset = 0;
+ pSMB->DataCount = cpu_to_le32(2);
+ pSMB->DataOffset =
+ cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req,
+ compression_state) - 4); /* 84 */
+ pSMB->SetupCount = 4;
+ pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
+ pSMB->ParameterCount = 0;
+ pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION);
+ pSMB->IsFsctl = 1; /* FSCTL */
+ pSMB->IsRootFlag = 0;
+ pSMB->Fid = fid; /* file handle always le */
+ /* 3 byte pad, followed by 2 byte compress state */
+ pSMB->ByteCount = cpu_to_le16(5);
+ inc_rfc1001_len(pSMB, 5);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc)
+ cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc);
+
+ cifs_buf_release(pSMB);
+ /*
+ * Note: On -EAGAIN error only caller can retry on handle based calls
+ * since file handle passed in no longer valid.
+ */
return rc;
}
-#endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */
+
#ifdef CONFIG_CIFS_POSIX
return 0;
}
cifs_acl->version = cpu_to_le16(1);
- if (acl_type == ACL_TYPE_ACCESS)
+ if (acl_type == ACL_TYPE_ACCESS) {
cifs_acl->access_entry_count = cpu_to_le16(count);
- else if (acl_type == ACL_TYPE_DEFAULT)
+ cifs_acl->default_entry_count = cpu_to_le16(0xFFFF);
+ } else if (acl_type == ACL_TYPE_DEFAULT) {
cifs_acl->default_entry_count = cpu_to_le16(count);
- else {
+ cifs_acl->access_entry_count = cpu_to_le16(0xFFFF);
+ } else {
cifs_dbg(FYI, "unknown ACL type %d\n", acl_type);
return 0;
}
}
}
qsec_out:
- if (buf_type == CIFS_SMALL_BUFFER)
- cifs_small_buf_release(iov[0].iov_base);
- else if (buf_type == CIFS_LARGE_BUFFER)
- cifs_buf_release(iov[0].iov_base);
+ free_rsp_buf(buf_type, iov[0].iov_base);
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
return rc;
}
pSMB->Pad = 0;
pSMB->Fid = netfid;
inc_rfc1001_len(pSMB, byte_count);
+ pSMB->t2.ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
- cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
+ cifs_dbg(FYI, "Send error in QFileInfo = %d", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
pSMB->Pad = 0;
pSMB->Fid = netfid;
inc_rfc1001_len(pSMB, byte_count);
+ pSMB->t2.ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
- cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
+ cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
- cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
+ cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc);
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
return rc;
nls_codepage = cifs_sb->local_nls;
- remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
+ remap = cifs_remap(cifs_sb);
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
strncpy(pSMB->RequestFileName, search_name, name_len);
}
- if (ses->server) {
- if (ses->server->sec_mode &
- (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
- pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
- }
+ if (ses->server->sign)
+ pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
pSMB->hdr.Uid = ses->Suid;
int name_len;
int rc = 0;
int bytes_returned = 0;
- int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
+ int remap = cifs_remap(cifs_sb);
__u16 params, byte_count, data_count, param_offset, offset;
cifs_dbg(FYI, "ea length %d\n", list_len);
if (list_len <= 8) {
cifs_dbg(FYI, "empty EA list returned from server\n");
+ /* didn't find the named attribute */
+ if (ea_name)
+ rc = -ENODATA;
goto QAllEAsOut;
}
projects / firefly-linux-kernel-4.4.55.git / blobdiff