Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
new file mode 100644
index 0000000..df6a619
--- /dev/null
+++ b/fs/cifs/cifssmb.c
@@ -0,0 +1,4186 @@
+/*
+ * fs/cifs/cifssmb.c
+ *
+ * Copyright (C) International Business Machines Corp., 2002,2005
+ * Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ * Contains the routines for constructing the SMB PDUs themselves
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+ /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */
+ /* These are mostly routines that operate on a pathname, or on a tree id */
+ /* (mounted volume), but there are eight handle based routines which must be */
+ /* treated slightly different for reconnection purposes since we never want */
+ /* to reuse a stale file handle and the caller knows the file handle */
+
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/vfs.h>
+#include <linux/posix_acl_xattr.h>
+#include <asm/uaccess.h>
+#include "cifspdu.h"
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "cifs_unicode.h"
+#include "cifs_debug.h"
+
+#ifdef CONFIG_CIFS_POSIX
+static struct {
+ int index;
+ char *name;
+} protocols[] = {
+ {CIFS_PROT, "\2NT LM 0.12"},
+ {CIFS_PROT, "\2POSIX 2"},
+ {BAD_PROT, "\2"}
+};
+#else
+static struct {
+ int index;
+ char *name;
+} protocols[] = {
+ {CIFS_PROT, "\2NT LM 0.12"},
+ {BAD_PROT, "\2"}
+};
+#endif
+
+
+/* Mark as invalid, all open files on tree connections since they
+ were closed when session to server was lost */
+static void mark_open_files_invalid(struct cifsTconInfo * pTcon)
+{
+ struct cifsFileInfo *open_file = NULL;
+ struct list_head * tmp;
+ struct list_head * tmp1;
+
+/* list all files open on tree connection and mark them invalid */
+ write_lock(&GlobalSMBSeslock);
+ list_for_each_safe(tmp, tmp1, &pTcon->openFileList) {
+ open_file = list_entry(tmp,struct cifsFileInfo, tlist);
+ if(open_file) {
+ open_file->invalidHandle = TRUE;
+ }
+ }
+ write_unlock(&GlobalSMBSeslock);
+ /* BB Add call to invalidate_inodes(sb) for all superblocks mounted to this tcon */
+}
+
+/* If the return code is zero, this function must fill in request_buf pointer */
+static int
+small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
+ void **request_buf /* returned */)
+{
+ int rc = 0;
+
+ /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
+ check for tcp and smb session status done differently
+ for those three - in the calling routine */
+ if(tcon) {
+ if((tcon->ses) && (tcon->ses->server)){
+ struct nls_table *nls_codepage;
+ /* Give Demultiplex thread up to 10 seconds to
+ reconnect, should be greater than cifs socket
+ timeout which is 7 seconds */
+ while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
+ wait_event_interruptible_timeout(tcon->ses->server->response_q,
+ (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
+ if(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
+ /* on "soft" mounts we wait once */
+ if((tcon->retry == FALSE) ||
+ (tcon->ses->status == CifsExiting)) {
+ cFYI(1,("gave up waiting on reconnect in smb_init"));
+ return -EHOSTDOWN;
+ } /* else "hard" mount - keep retrying until
+ process is killed or server comes back up */
+ } else /* TCP session is reestablished now */
+ break;
+
+ }
+
+ nls_codepage = load_nls_default();
+ /* need to prevent multiple threads trying to
+ simultaneously reconnect the same SMB session */
+ down(&tcon->ses->sesSem);
+ if(tcon->ses->status == CifsNeedReconnect)
+ rc = cifs_setup_session(0, tcon->ses, nls_codepage);
+ if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
+ mark_open_files_invalid(tcon);
+ rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon,
+ nls_codepage);
+ up(&tcon->ses->sesSem);
+ if(rc == 0)
+ atomic_inc(&tconInfoReconnectCount);
+
+ cFYI(1, ("reconnect tcon rc = %d", rc));
+ /* Removed call to reopen open files here -
+ it is safer (and faster) to reopen files
+ one at a time as needed in read and write */
+
+ /* Check if handle based operation so we
+ know whether we can continue or not without
+ returning to caller to reset file handle */
+ switch(smb_command) {
+ case SMB_COM_READ_ANDX:
+ case SMB_COM_WRITE_ANDX:
+ case SMB_COM_CLOSE:
+ case SMB_COM_FIND_CLOSE2:
+ case SMB_COM_LOCKING_ANDX: {
+ unload_nls(nls_codepage);
+ return -EAGAIN;
+ }
+ }
+ } else {
+ up(&tcon->ses->sesSem);
+ }
+ unload_nls(nls_codepage);
+
+ } else {
+ return -EIO;
+ }
+ }
+ if(rc)
+ return rc;
+
+ *request_buf = cifs_small_buf_get();
+ if (*request_buf == NULL) {
+ /* BB should we add a retry in here if not a writepage? */
+ return -ENOMEM;
+ }
+
+ header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,wct);
+
+#ifdef CONFIG_CIFS_STATS
+ if(tcon != NULL) {
+ atomic_inc(&tcon->num_smbs_sent);
+ }
+#endif /* CONFIG_CIFS_STATS */
+ return rc;
+}
+
+/* If the return code is zero, this function must fill in request_buf pointer */
+static int
+smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
+ void **request_buf /* returned */ ,
+ void **response_buf /* returned */ )
+{
+ int rc = 0;
+
+ /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
+ check for tcp and smb session status done differently
+ for those three - in the calling routine */
+ if(tcon) {
+ if((tcon->ses) && (tcon->ses->server)){
+ struct nls_table *nls_codepage;
+ /* Give Demultiplex thread up to 10 seconds to
+ reconnect, should be greater than cifs socket
+ timeout which is 7 seconds */
+ while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
+ wait_event_interruptible_timeout(tcon->ses->server->response_q,
+ (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
+ if(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
+ /* on "soft" mounts we wait once */
+ if((tcon->retry == FALSE) ||
+ (tcon->ses->status == CifsExiting)) {
+ cFYI(1,("gave up waiting on reconnect in smb_init"));
+ return -EHOSTDOWN;
+ } /* else "hard" mount - keep retrying until
+ process is killed or server comes back up */
+ } else /* TCP session is reestablished now */
+ break;
+
+ }
+
+ nls_codepage = load_nls_default();
+ /* need to prevent multiple threads trying to
+ simultaneously reconnect the same SMB session */
+ down(&tcon->ses->sesSem);
+ if(tcon->ses->status == CifsNeedReconnect)
+ rc = cifs_setup_session(0, tcon->ses, nls_codepage);
+ if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
+ mark_open_files_invalid(tcon);
+ rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon,
+ nls_codepage);
+ up(&tcon->ses->sesSem);
+ if(rc == 0)
+ atomic_inc(&tconInfoReconnectCount);
+
+ cFYI(1, ("reconnect tcon rc = %d", rc));
+ /* Removed call to reopen open files here -
+ it is safer (and faster) to reopen files
+ one at a time as needed in read and write */
+
+ /* Check if handle based operation so we
+ know whether we can continue or not without
+ returning to caller to reset file handle */
+ switch(smb_command) {
+ case SMB_COM_READ_ANDX:
+ case SMB_COM_WRITE_ANDX:
+ case SMB_COM_CLOSE:
+ case SMB_COM_FIND_CLOSE2:
+ case SMB_COM_LOCKING_ANDX: {
+ unload_nls(nls_codepage);
+ return -EAGAIN;
+ }
+ }
+ } else {
+ up(&tcon->ses->sesSem);
+ }
+ unload_nls(nls_codepage);
+
+ } else {
+ return -EIO;
+ }
+ }
+ if(rc)
+ return rc;
+
+ *request_buf = cifs_buf_get();
+ if (*request_buf == NULL) {
+ /* BB should we add a retry in here if not a writepage? */
+ return -ENOMEM;
+ }
+ /* Although the original thought was we needed the response buf for */
+ /* potential retries of smb operations it turns out we can determine */
+ /* from the mid flags when the request buffer can be resent without */
+ /* having to use a second distinct buffer for the response */
+ *response_buf = *request_buf;
+
+ header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
+ wct /*wct */ );
+
+#ifdef CONFIG_CIFS_STATS
+ if(tcon != NULL) {
+ atomic_inc(&tcon->num_smbs_sent);
+ }
+#endif /* CONFIG_CIFS_STATS */
+ return rc;
+}
+
+static int validate_t2(struct smb_t2_rsp * pSMB)
+{
+ int rc = -EINVAL;
+ int total_size;
+ char * pBCC;
+
+ /* check for plausible wct, bcc and t2 data and parm sizes */
+ /* check for parm and data offset going beyond end of smb */
+ if(pSMB->hdr.WordCount >= 10) {
+ if((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) &&
+ (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) {
+ /* check that bcc is at least as big as parms + data */
+ /* check that bcc is less than negotiated smb buffer */
+ total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount);
+ if(total_size < 512) {
+ total_size+=le16_to_cpu(pSMB->t2_rsp.DataCount);
+ /* BCC le converted in SendReceive */
+ pBCC = (pSMB->hdr.WordCount * 2) + sizeof(struct smb_hdr) +
+ (char *)pSMB;
+ if((total_size <= (*(u16 *)pBCC)) &&
+ (total_size <
+ CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) {
+ return 0;
+ }
+
+ }
+ }
+ }
+ cifs_dump_mem("Invalid transact2 SMB: ",(char *)pSMB,
+ sizeof(struct smb_t2_rsp) + 16);
+ return rc;
+}
+int
+CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
+{
+ NEGOTIATE_REQ *pSMB;
+ NEGOTIATE_RSP *pSMBr;
+ int rc = 0;
+ int bytes_returned;
+ struct TCP_Server_Info * server;
+ u16 count;
+
+ if(ses->server)
+ server = ses->server;
+ else {
+ rc = -EIO;
+ return rc;
+ }
+ rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
+ (void **) &pSMB, (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
+ if (extended_security)
+ pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
+
+ count = strlen(protocols[0].name) + 1;
+ strncpy(pSMB->DialectsArray, protocols[0].name, 30);
+ /* null guaranteed to be at end of source and target buffers anyway */
+
+ pSMB->hdr.smb_buf_length += count;
+ pSMB->ByteCount = cpu_to_le16(count);
+
+ rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc == 0) {
+ server->secMode = pSMBr->SecurityMode;
+ server->secType = NTLM; /* BB override default for NTLMv2 or krb*/
+ /* one byte - no need to convert this or EncryptionKeyLen from le,*/
+ 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->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
+ cFYI(0, ("Max buf = %d ", ses->server->maxBuf));
+ GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
+ server->capabilities = le32_to_cpu(pSMBr->Capabilities);
+ server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone);
+ /* BB with UTC do we ever need to be using srvr timezone? */
+ if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
+ memcpy(server->cryptKey, pSMBr->u.EncryptionKey,
+ CIFS_CRYPTO_KEY_SIZE);
+ } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC)
+ && (pSMBr->EncryptionKeyLength == 0)) {
+ /* decode security blob */
+ } else
+ rc = -EIO;
+
+ /* BB might be helpful to save off the domain of server here */
+
+ if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) &&
+ (server->capabilities & CAP_EXTENDED_SECURITY)) {
+ count = pSMBr->ByteCount;
+ if (count < 16)
+ rc = -EIO;
+ else if (count == 16) {
+ server->secType = RawNTLMSSP;
+ if (server->socketUseCount.counter > 1) {
+ if (memcmp
+ (server->server_GUID,
+ pSMBr->u.extended_response.
+ GUID, 16) != 0) {
+ cFYI(1,
+ ("UID of server does not match previous connection to same ip address"));
+ memcpy(server->
+ server_GUID,
+ pSMBr->u.
+ extended_response.
+ GUID, 16);
+ }
+ } else
+ memcpy(server->server_GUID,
+ pSMBr->u.extended_response.
+ GUID, 16);
+ } else {
+ rc = decode_negTokenInit(pSMBr->u.
+ extended_response.
+ SecurityBlob,
+ count - 16,
+ &server->secType);
+ if(rc == 1) {
+ /* BB Need to fill struct for sessetup here */
+ rc = -EOPNOTSUPP;
+ } else {
+ rc = -EINVAL;
+ }
+ }
+ } else
+ server->capabilities &= ~CAP_EXTENDED_SECURITY;
+ if(sign_CIFS_PDUs == FALSE) {
+ if(server->secMode & SECMODE_SIGN_REQUIRED)
+ cERROR(1,
+ ("Server requires /proc/fs/cifs/PacketSigningEnabled"));
+ 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);
+ }
+
+ }
+ if (pSMB)
+ cifs_buf_release(pSMB);
+ return rc;
+}
+
+int
+CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
+{
+ struct smb_hdr *smb_buffer;
+ struct smb_hdr *smb_buffer_response; /* BB removeme BB */
+ int rc = 0;
+ int length;
+
+ cFYI(1, ("In tree disconnect"));
+ /*
+ * If last user of the connection and
+ * connection alive - disconnect it
+ * If this is the last connection on the server session disconnect it
+ * (and inside session disconnect we should check if tcp socket needs
+ * to be freed and kernel thread woken up).
+ */
+ if (tcon)
+ down(&tcon->tconSem);
+ else
+ return -EIO;
+
+ atomic_dec(&tcon->useCount);
+ if (atomic_read(&tcon->useCount) > 0) {
+ up(&tcon->tconSem);
+ return -EBUSY;
+ }
+
+ /* No need to return error on this operation if tid invalidated and
+ closed on server already e.g. due to tcp session crashing */
+ if(tcon->tidStatus == CifsNeedReconnect) {
+ up(&tcon->tconSem);
+ return 0;
+ }
+
+ if((tcon->ses == NULL) || (tcon->ses->server == NULL)) {
+ up(&tcon->tconSem);
+ return -EIO;
+ }
+ rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, (void **)&smb_buffer);
+ if (rc) {
+ up(&tcon->tconSem);
+ return rc;
+ } else {
+ smb_buffer_response = smb_buffer; /* BB removeme BB */
+ }
+ rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response,
+ &length, 0);
+ if (rc)
+ cFYI(1, (" Tree disconnect failed %d", rc));
+
+ if (smb_buffer)
+ cifs_small_buf_release(smb_buffer);
+ up(&tcon->tconSem);
+
+ /* No need to return error on this operation if tid invalidated and
+ closed on server already e.g. due to tcp session crashing */
+ if (rc == -EAGAIN)
+ rc = 0;
+
+ return rc;
+}
+
+int
+CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
+{
+ struct smb_hdr *smb_buffer_response;
+ LOGOFF_ANDX_REQ *pSMB;
+ int rc = 0;
+ int length;
+
+ cFYI(1, ("In SMBLogoff for session disconnect"));
+ if (ses)
+ down(&ses->sesSem);
+ else
+ return -EIO;
+
+ atomic_dec(&ses->inUse);
+ if (atomic_read(&ses->inUse) > 0) {
+ up(&ses->sesSem);
+ return -EBUSY;
+ }
+ rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
+ if (rc) {
+ up(&ses->sesSem);
+ return rc;
+ }
+
+ smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */
+
+ if(ses->server) {
+ if(ses->server->secMode &
+ (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+ pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
+ }
+
+ pSMB->hdr.Uid = ses->Suid;
+
+ pSMB->AndXCommand = 0xFF;
+ rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
+ smb_buffer_response, &length, 0);
+ if (ses->server) {
+ atomic_dec(&ses->server->socketUseCount);
+ if (atomic_read(&ses->server->socketUseCount) == 0) {
+ spin_lock(&GlobalMid_Lock);
+ ses->server->tcpStatus = CifsExiting;
+ spin_unlock(&GlobalMid_Lock);
+ rc = -ESHUTDOWN;
+ }
+ }
+ if (pSMB)
+ cifs_small_buf_release(pSMB);
+ up(&ses->sesSem);
+
+ /* if session dead then we do not need to do ulogoff,
+ since server closed smb session, no sense reporting
+ error */
+ if (rc == -EAGAIN)
+ rc = 0;
+ return rc;
+}
+
+int
+CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon,
+ const char *fileName, const struct nls_table *nls_codepage)
+{
+ DELETE_FILE_REQ *pSMB = NULL;
+ DELETE_FILE_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+
+DelFileRetry:
+ rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->fileName, fileName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fileName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->fileName, fileName, name_len);
+ }
+ pSMB->SearchAttributes =
+ cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
+ pSMB->BufferFormat = 0x04;
+ pSMB->hdr.smb_buf_length += name_len + 1;
+ pSMB->ByteCount = cpu_to_le16(name_len + 1);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Error in RMFile = %d", rc));
+ }
+#ifdef CONFIG_CIFS_STATS
+ else {
+ atomic_inc(&tcon->num_deletes);
+ }
+#endif
+
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto DelFileRetry;
+
+ return rc;
+}
+
+int
+CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon,
+ const char *dirName, const struct nls_table *nls_codepage)
+{
+ DELETE_DIRECTORY_REQ *pSMB = NULL;
+ DELETE_DIRECTORY_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+
+ cFYI(1, ("In CIFSSMBRmDir"));
+RmDirRetry:
+ rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len = cifs_strtoUCS((wchar_t *) pSMB->DirName, dirName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(dirName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->DirName, dirName, name_len);
+ }
+
+ pSMB->BufferFormat = 0x04;
+ pSMB->hdr.smb_buf_length += name_len + 1;
+ pSMB->ByteCount = cpu_to_le16(name_len + 1);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Error in RMDir = %d", rc));
+ }
+#ifdef CONFIG_CIFS_STATS
+ else {
+ atomic_inc(&tcon->num_rmdirs);
+ }
+#endif
+
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto RmDirRetry;
+ return rc;
+}
+
+int
+CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
+ const char *name, const struct nls_table *nls_codepage)
+{
+ int rc = 0;
+ CREATE_DIRECTORY_REQ *pSMB = NULL;
+ CREATE_DIRECTORY_RSP *pSMBr = NULL;
+ int bytes_returned;
+ int name_len;
+
+ cFYI(1, ("In CIFSSMBMkDir"));
+MkDirRetry:
+ rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len = cifs_strtoUCS((wchar_t *) pSMB->DirName, name, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(name, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->DirName, name, name_len);
+ }
+
+ pSMB->BufferFormat = 0x04;
+ pSMB->hdr.smb_buf_length += name_len + 1;
+ pSMB->ByteCount = cpu_to_le16(name_len + 1);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Error in Mkdir = %d", rc));
+ }
+#ifdef CONFIG_CIFS_STATS
+ else {
+ atomic_inc(&tcon->num_mkdirs);
+ }
+#endif
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto MkDirRetry;
+ return rc;
+}
+
+int
+CIFSSMBOpen(const int xid, struct cifsTconInfo *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 rc = -EACCES;
+ OPEN_REQ *pSMB = NULL;
+ OPEN_RSP *pSMBr = NULL;
+ int bytes_returned;
+ int name_len;
+ __u16 count;
+
+openRetry:
+ rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->AndXCommand = 0xFF; /* none */
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ count = 1; /* account for one byte pad to word boundary */
+ name_len =
+ cifs_strtoUCS((wchar_t *) (pSMB->fileName + 1),
+ fileName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ pSMB->NameLength = cpu_to_le16(name_len);
+ } else { /* BB improve the 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);
+ }
+ 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;
+ pSMB->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 */
+ if (tcon->ses->capabilities & CAP_UNIX)
+ pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
+
+ /* if ((omode & S_IWUGO) == 0)
+ pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
+ /* Above line causes problems due to vfs splitting create into two
+ pieces - need to set mode after file created not while it is
+ being created */
+ pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
+ pSMB->CreateDisposition = cpu_to_le32(openDisposition);
+ pSMB->CreateOptions = cpu_to_le32(create_options);
+ pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); /* BB ??*/
+ pSMB->SecurityFlags =
+ SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
+
+ count += name_len;
+ pSMB->hdr.smb_buf_length += 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, 1);
+ if (rc) {
+ cFYI(1, ("Error in Open = %d", rc));
+ } else {
+ *pOplock = pSMBr->OplockLevel; /* one 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);
+ }
+
+#ifdef CONFIG_CIFS_STATS
+ atomic_inc(&tcon->num_opens);
+#endif
+ }
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto openRetry;
+ return rc;
+}
+
+/* If no buffer passed in, then caller wants to do the copy
+ as in the case of readpages so the SMB buffer must be
+ freed by the caller */
+
+int
+CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
+ const int netfid, const unsigned int count,
+ const __u64 lseek, unsigned int *nbytes, char **buf)
+{
+ int rc = -EACCES;
+ READ_REQ *pSMB = NULL;
+ READ_RSP *pSMBr = NULL;
+ char *pReadData = NULL;
+ int bytes_returned;
+
+ cFYI(1,("Reading %d bytes on fid %d",count,netfid));
+
+ *nbytes = 0;
+ rc = smb_init(SMB_COM_READ_ANDX, 12, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ /* tcon and ses pointer are checked in smb_init */
+ if (tcon->ses->server == NULL)
+ return -ECONNABORTED;
+
+ pSMB->AndXCommand = 0xFF; /* none */
+ pSMB->Fid = netfid;
+ pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF);
+ pSMB->OffsetHigh = cpu_to_le32(lseek >> 32);
+ pSMB->Remaining = 0;
+ pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
+ pSMB->MaxCountHigh = cpu_to_le32(count >> 16);
+ pSMB->ByteCount = 0; /* no need to do le conversion since it is 0 */
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cERROR(1, ("Send error in read = %d", rc));
+ } else {
+ int data_length = le16_to_cpu(pSMBr->DataLengthHigh);
+ data_length = data_length << 16;
+ data_length += le16_to_cpu(pSMBr->DataLength);
+ *nbytes = data_length;
+
+ /*check that DataLength would not go beyond end of SMB */
+ if ((data_length > CIFSMaxBufSize)
+ || (data_length > count)) {
+ cFYI(1,("bad length %d for count %d",data_length,count));
+ rc = -EIO;
+ *nbytes = 0;
+ } else {
+ pReadData =
+ (char *) (&pSMBr->hdr.Protocol) +
+ le16_to_cpu(pSMBr->DataOffset);
+/* if(rc = copy_to_user(buf, pReadData, data_length)) {
+ cERROR(1,("Faulting on read rc = %d",rc));
+ rc = -EFAULT;
+ }*/ /* can not use copy_to_user when using page cache*/
+ if(*buf)
+ memcpy(*buf,pReadData,data_length);
+ }
+ }
+ if(*buf)
+ cifs_buf_release(pSMB);
+ else
+ *buf = (char *)pSMB;
+
+ /* Note: On -EAGAIN error only caller can retry on handle based calls
+ since file handle passed in no longer valid */
+ return rc;
+}
+
+int
+CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
+ const int netfid, const unsigned int count,
+ const __u64 offset, unsigned int *nbytes, const char *buf,
+ const char __user * ubuf, const int long_op)
+{
+ int rc = -EACCES;
+ WRITE_REQ *pSMB = NULL;
+ WRITE_RSP *pSMBr = NULL;
+ int bytes_returned;
+ __u32 bytes_sent;
+ __u16 byte_count;
+
+ /* cFYI(1,("write at %lld %d bytes",offset,count));*/
+ rc = smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+ /* tcon and ses pointer are checked in smb_init */
+ if (tcon->ses->server == NULL)
+ return -ECONNABORTED;
+
+ pSMB->AndXCommand = 0xFF; /* none */
+ pSMB->Fid = netfid;
+ pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
+ pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
+ pSMB->Reserved = 0xFFFFFFFF;
+ pSMB->WriteMode = 0;
+ pSMB->Remaining = 0;
+
+ /* Can increase buffer size if buffer is big enough in some cases - ie we
+ can send more if LARGE_WRITE_X capability returned by the server and if
+ our buffer is big enough or if we convert to iovecs on socket writes
+ and eliminate the copy to the CIFS buffer */
+ if(tcon->ses->capabilities & CAP_LARGE_WRITE_X) {
+ bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count);
+ } else {
+ bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)
+ & ~0xFF;
+ }
+
+ if (bytes_sent > count)
+ bytes_sent = count;
+ pSMB->DataOffset =
+ cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);
+ if(buf)
+ memcpy(pSMB->Data,buf,bytes_sent);
+ else if(ubuf) {
+ if(copy_from_user(pSMB->Data,ubuf,bytes_sent)) {
+ cifs_buf_release(pSMB);
+ return -EFAULT;
+ }
+ } else {
+ /* No buffer */
+ cifs_buf_release(pSMB);
+ return -EINVAL;
+ }
+
+ byte_count = bytes_sent + 1 /* pad */ ; /* BB fix this for sends > 64K */
+ pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
+ pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
+ pSMB->hdr.smb_buf_length += bytes_sent+1;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, long_op);
+ if (rc) {
+ cFYI(1, ("Send error in write = %d", rc));
+ *nbytes = 0;
+ } else {
+ *nbytes = le16_to_cpu(pSMBr->CountHigh);
+ *nbytes = (*nbytes) << 16;
+ *nbytes += le16_to_cpu(pSMBr->Count);
+ }
+
+ 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;
+}
+
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
+ const int netfid, const unsigned int count,
+ const __u64 offset, unsigned int *nbytes, const char __user *buf,
+ const int long_op)
+{
+ int rc = -EACCES;
+ WRITE_REQ *pSMB = NULL;
+ WRITE_RSP *pSMBr = NULL;
+ /*int bytes_returned;*/
+ unsigned bytes_sent;
+ __u16 byte_count;
+
+ rc = small_smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB);
+
+ if (rc)
+ return rc;
+
+ pSMBr = (WRITE_RSP *)pSMB; /* BB removeme BB */
+
+ /* tcon and ses pointer are checked in smb_init */
+ if (tcon->ses->server == NULL)
+ return -ECONNABORTED;
+
+ pSMB->AndXCommand = 0xFF; /* none */
+ pSMB->Fid = netfid;
+ pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
+ pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
+ pSMB->Reserved = 0xFFFFFFFF;
+ pSMB->WriteMode = 0;
+ pSMB->Remaining = 0;
+ bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & ~0xFF;
+ if (bytes_sent > count)
+ bytes_sent = count;
+ pSMB->DataLengthHigh = 0;
+ pSMB->DataOffset =
+ cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);
+
+ byte_count = bytes_sent + 1 /* pad */ ;
+ pSMB->DataLengthLow = cpu_to_le16(bytes_sent);
+ pSMB->DataLengthHigh = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+/* rc = SendReceive2(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, buf, buflen, &bytes_returned, long_op); */ /* BB fixme BB */
+ if (rc) {
+ cFYI(1, ("Send error in write2 (large write) = %d", rc));
+ *nbytes = 0;
+ } else
+ *nbytes = le16_to_cpu(pSMBr->Count);
+
+ cifs_small_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_EXPERIMENTAL */
+
+int
+CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
+ const __u16 smb_file_id, const __u64 len,
+ const __u64 offset, const __u32 numUnlock,
+ const __u32 numLock, const __u8 lockType, const int waitFlag)
+{
+ int rc = 0;
+ LOCK_REQ *pSMB = NULL;
+ LOCK_RSP *pSMBr = NULL;
+ int bytes_returned;
+ int timeout = 0;
+ __u16 count;
+
+ cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d",waitFlag,numLock));
+ rc = smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if(lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
+ timeout = -1; /* no response expected */
+ pSMB->Timeout = 0;
+ } else if (waitFlag == TRUE) {
+ timeout = 3; /* blocking operation, no timeout */
+ pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */
+ } else {
+ pSMB->Timeout = 0;
+ }
+
+ pSMB->NumberOfLocks = cpu_to_le16(numLock);
+ pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
+ pSMB->LockType = lockType;
+ pSMB->AndXCommand = 0xFF; /* none */
+ pSMB->Fid = smb_file_id; /* netfid stays le */
+
+ if((numLock != 0) || (numUnlock != 0)) {
+ pSMB->Locks[0].Pid = cpu_to_le16(current->tgid);
+ /* BB where to store pid high? */
+ pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len);
+ pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32));
+ pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset);
+ pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32));
+ count = sizeof(LOCKING_ANDX_RANGE);
+ } else {
+ /* oplock break */
+ count = 0;
+ }
+ pSMB->hdr.smb_buf_length += count;
+ pSMB->ByteCount = cpu_to_le16(count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, timeout);
+
+ if (rc) {
+ cFYI(1, ("Send error in Lock = %d", 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;
+}
+
+int
+CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
+{
+ int rc = 0;
+ CLOSE_REQ *pSMB = NULL;
+ CLOSE_RSP *pSMBr = NULL;
+ int bytes_returned;
+ cFYI(1, ("In CIFSSMBClose"));
+
+/* do not retry on dead session on close */
+ rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB);
+ if(rc == -EAGAIN)
+ return 0;
+ if (rc)
+ return rc;
+
+ pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
+
+ pSMB->FileID = (__u16) smb_file_id;
+ pSMB->LastWriteTime = 0;
+ pSMB->ByteCount = 0;
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ if(rc!=-EINTR) {
+ /* EINTR is expected when user ctl-c to kill app */
+ cERROR(1, ("Send error in Close = %d", rc));
+ }
+ }
+
+ cifs_small_buf_release(pSMB);
+
+ /* Since session is dead, file will be closed on server already */
+ if(rc == -EAGAIN)
+ rc = 0;
+
+ return rc;
+}
+
+int
+CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
+ const char *fromName, const char *toName,
+ const struct nls_table *nls_codepage)
+{
+ int rc = 0;
+ RENAME_REQ *pSMB = NULL;
+ RENAME_RSP *pSMBr = NULL;
+ int bytes_returned;
+ int name_len, name_len2;
+ __u16 count;
+
+ cFYI(1, ("In CIFSSMBRename"));
+renameRetry:
+ rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->BufferFormat = 0x04;
+ pSMB->SearchAttributes =
+ cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
+ ATTR_DIRECTORY);
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->OldFileName, fromName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ pSMB->OldFileName[name_len] = 0x04; /* pad */
+ /* protocol requires ASCII signature byte on Unicode string */
+ pSMB->OldFileName[name_len + 1] = 0x00;
+ name_len2 =
+ cifs_strtoUCS((wchar_t *) & pSMB->
+ OldFileName[name_len + 2], toName, PATH_MAX,
+ nls_codepage);
+ name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
+ name_len2 *= 2; /* convert to bytes */
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fromName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->OldFileName, fromName, name_len);
+ name_len2 = strnlen(toName, PATH_MAX);
+ name_len2++; /* trailing null */
+ pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
+ strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
+ name_len2++; /* trailing null */
+ name_len2++; /* signature byte */
+ }
+
+ count = 1 /* 1st signature byte */ + name_len + name_len2;
+ pSMB->hdr.smb_buf_length += count;
+ pSMB->ByteCount = cpu_to_le16(count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in rename = %d", rc));
+ }
+
+#ifdef CONFIG_CIFS_STATS
+ else {
+ atomic_inc(&tcon->num_renames);
+ }
+#endif
+
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto renameRetry;
+
+ return rc;
+}
+
+int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon,
+ int netfid, char * target_name, const struct nls_table * nls_codepage)
+{
+ struct smb_com_transaction2_sfi_req *pSMB = NULL;
+ struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
+ struct set_file_rename * rename_info;
+ char *data_offset;
+ char dummy_string[30];
+ int rc = 0;
+ int bytes_returned = 0;
+ int len_of_str;
+ __u16 params, param_offset, offset, count, byte_count;
+
+ cFYI(1, ("Rename to File by handle"));
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ params = 6;
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
+ offset = param_offset + params;
+
+ data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
+ rename_info = (struct set_file_rename *) data_offset;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
+ byte_count = 3 /* pad */ + params;
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+ pSMB->DataOffset = cpu_to_le16(offset);
+ /* construct random name ".cifs_tmp<inodenum><mid>" */
+ rename_info->overwrite = cpu_to_le32(1);
+ rename_info->root_fid = 0;
+ /* unicode only call */
+ if(target_name == NULL) {
+ sprintf(dummy_string,"cifs%x",pSMB->hdr.Mid);
+ len_of_str = cifs_strtoUCS((wchar_t *) rename_info->target_name, dummy_string, 24, nls_codepage);
+ } else {
+ len_of_str = cifs_strtoUCS((wchar_t *) rename_info->target_name, target_name, PATH_MAX, nls_codepage);
+ }
+ rename_info->target_name_len = cpu_to_le32(2 * len_of_str);
+ count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2;
+ byte_count += count;
+ pSMB->DataCount = cpu_to_le16(count);
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->Fid = netfid;
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1,("Send error in Rename (by file handle) = %d", rc));
+ }
+#ifdef CONFIG_CIFS_STATS
+ else {
+ atomic_inc(&pTcon->num_t2renames);
+ }
+#endif
+ 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;
+}
+
+int
+CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char * fromName,
+ const __u16 target_tid, const char *toName, const int flags,
+ const struct nls_table *nls_codepage)
+{
+ int rc = 0;
+ COPY_REQ *pSMB = NULL;
+ COPY_RSP *pSMBr = NULL;
+ int bytes_returned;
+ int name_len, name_len2;
+ __u16 count;
+
+ cFYI(1, ("In CIFSSMBCopy"));
+copyRetry:
+ rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->BufferFormat = 0x04;
+ pSMB->Tid2 = target_tid;
+
+ pSMB->Flags = cpu_to_le16(flags & COPY_TREE);
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len = cifs_strtoUCS((wchar_t *) pSMB->OldFileName,
+ fromName,
+ PATH_MAX /* find define for this maxpathcomponent */,
+ nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ pSMB->OldFileName[name_len] = 0x04; /* pad */
+ /* protocol requires ASCII signature byte on Unicode string */
+ pSMB->OldFileName[name_len + 1] = 0x00;
+ name_len2 = cifs_strtoUCS((wchar_t *) & pSMB->
+ OldFileName[name_len + 2], toName, PATH_MAX,
+ nls_codepage);
+ name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
+ name_len2 *= 2; /* convert to bytes */
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fromName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->OldFileName, fromName, name_len);
+ name_len2 = strnlen(toName, PATH_MAX);
+ name_len2++; /* trailing null */
+ pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
+ strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
+ name_len2++; /* trailing null */
+ name_len2++; /* signature byte */
+ }
+
+ count = 1 /* 1st signature byte */ + name_len + name_len2;
+ pSMB->hdr.smb_buf_length += count;
+ pSMB->ByteCount = cpu_to_le16(count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in copy = %d with %d files copied",
+ rc, le16_to_cpu(pSMBr->CopyCount)));
+ }
+ if (pSMB)
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto copyRetry;
+
+ return rc;
+}
+
+int
+CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon,
+ const char *fromName, const char *toName,
+ const struct nls_table *nls_codepage)
+{
+ TRANSACTION2_SPI_REQ *pSMB = NULL;
+ TRANSACTION2_SPI_RSP *pSMBr = NULL;
+ char *data_offset;
+ int name_len;
+ int name_len_target;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, param_offset, offset, byte_count;
+
+ cFYI(1, ("In Symlink Unix style"));
+createSymLinkRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, fromName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fromName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, fromName, name_len);
+ }
+ params = 6 + name_len;
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_spi_req,
+ InformationLevel) - 4;
+ offset = param_offset + params;
+
+ data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len_target =
+ cifs_strtoUCS((wchar_t *) data_offset, toName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len_target++; /* trailing null */
+ name_len_target *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len_target = strnlen(toName, PATH_MAX);
+ name_len_target++; /* trailing null */
+ strncpy(data_offset, toName, name_len_target);
+ }
+
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ /* BB find exact max on data count below from sess */
+ pSMB->MaxDataCount = cpu_to_le16(1000);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
+ byte_count = 3 /* pad */ + params + name_len_target;
+ pSMB->DataCount = cpu_to_le16(name_len_target);
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+ pSMB->DataOffset = cpu_to_le16(offset);
+ pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1,
+ ("Send error in SetPathInfo (create symlink) = %d",
+ rc));
+ }
+
+ if (pSMB)
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto createSymLinkRetry;
+
+ return rc;
+}
+
+int
+CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon,
+ const char *fromName, const char *toName,
+ const struct nls_table *nls_codepage)
+{
+ TRANSACTION2_SPI_REQ *pSMB = NULL;
+ TRANSACTION2_SPI_RSP *pSMBr = NULL;
+ char *data_offset;
+ int name_len;
+ int name_len_target;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, param_offset, offset, byte_count;
+
+ cFYI(1, ("In Create Hard link Unix style"));
+createHardLinkRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len = cifs_strtoUCS((wchar_t *) pSMB->FileName, toName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(toName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, toName, name_len);
+ }
+ params = 6 + name_len;
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_spi_req,
+ InformationLevel) - 4;
+ offset = param_offset + params;
+
+ data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len_target =
+ cifs_strtoUCS((wchar_t *) data_offset, fromName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len_target++; /* trailing null */
+ name_len_target *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len_target = strnlen(fromName, PATH_MAX);
+ name_len_target++; /* trailing null */
+ strncpy(data_offset, fromName, name_len_target);
+ }
+
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ /* BB find exact max on data count below from sess*/
+ pSMB->MaxDataCount = cpu_to_le16(1000);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
+ byte_count = 3 /* pad */ + params + name_len_target;
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->DataCount = cpu_to_le16(name_len_target);
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+ pSMB->DataOffset = cpu_to_le16(offset);
+ pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc));
+ }
+
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto createHardLinkRetry;
+
+ return rc;
+}
+
+int
+CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon,
+ const char *fromName, const char *toName,
+ const struct nls_table *nls_codepage)
+{
+ int rc = 0;
+ NT_RENAME_REQ *pSMB = NULL;
+ RENAME_RSP *pSMBr = NULL;
+ int bytes_returned;
+ int name_len, name_len2;
+ __u16 count;
+
+ cFYI(1, ("In CIFSCreateHardLink"));
+winCreateHardLinkRetry:
+
+ rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->SearchAttributes =
+ cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
+ ATTR_DIRECTORY);
+ pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK);
+ pSMB->ClusterCount = 0;
+
+ pSMB->BufferFormat = 0x04;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->OldFileName, fromName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ pSMB->OldFileName[name_len] = 0; /* pad */
+ pSMB->OldFileName[name_len + 1] = 0x04;
+ name_len2 =
+ cifs_strtoUCS((wchar_t *) & pSMB->
+ OldFileName[name_len + 2], toName, PATH_MAX,
+ nls_codepage);
+ name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
+ name_len2 *= 2; /* convert to bytes */
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fromName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->OldFileName, fromName, name_len);
+ name_len2 = strnlen(toName, PATH_MAX);
+ name_len2++; /* trailing null */
+ pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
+ strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
+ name_len2++; /* trailing null */
+ name_len2++; /* signature byte */
+ }
+
+ count = 1 /* string type byte */ + name_len + name_len2;
+ pSMB->hdr.smb_buf_length += count;
+ pSMB->ByteCount = cpu_to_le16(count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in hard link (NT rename) = %d", rc));
+ }
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto winCreateHardLinkRetry;
+
+ return rc;
+}
+
+int
+CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon,
+ const unsigned char *searchName,
+ char *symlinkinfo, const int buflen,
+ const struct nls_table *nls_codepage)
+{
+/* SMB_QUERY_FILE_UNIX_LINK */
+ TRANSACTION2_QPI_REQ *pSMB = NULL;
+ TRANSACTION2_QPI_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName));
+
+querySymLinkRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, searchName, name_len);
+ }
+
+ params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ /* BB find exact max data count below from sess structure BB */
+ pSMB->MaxDataCount = cpu_to_le16(4000);
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc));
+ } else {
+ /* decode response */
+
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+ if (rc || (pSMBr->ByteCount < 2))
+ /* BB also check enough total bytes returned */
+ rc = -EIO; /* bad smb */
+ else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
+
+ if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len = UniStrnlen((wchar_t *) ((char *)
+ &pSMBr->hdr.Protocol +data_offset),
+ min_t(const int, buflen,count) / 2);
+ cifs_strfromUCS_le(symlinkinfo,
+ (wchar_t *) ((char *)&pSMBr->hdr.Protocol +
+ data_offset),
+ name_len, nls_codepage);
+ } else {
+ strncpy(symlinkinfo,
+ (char *) &pSMBr->hdr.Protocol +
+ data_offset,
+ min_t(const int, buflen, count));
+ }
+ symlinkinfo[buflen] = 0;
+ /* just in case so calling code does not go off the end of buffer */
+ }
+ }
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto querySymLinkRetry;
+ return rc;
+}
+
+int
+CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
+ const unsigned char *searchName,
+ char *symlinkinfo, const int buflen,__u16 fid,
+ const struct nls_table *nls_codepage)
+{
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+ struct smb_com_transaction_ioctl_req * pSMB;
+ struct smb_com_transaction_ioctl_rsp * pSMBr;
+
+ cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName));
+ rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->TotalParameterCount = 0 ;
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le32(2);
+ /* BB find exact data count max from sess structure BB */
+ pSMB->MaxDataCount = cpu_to_le32(4000);
+ pSMB->MaxSetupCount = 4;
+ pSMB->Reserved = 0;
+ pSMB->ParameterOffset = 0;
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 4;
+ pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT);
+ pSMB->IsFsctl = 1; /* FSCTL */
+ pSMB->IsRootFlag = 0;
+ pSMB->Fid = fid; /* file handle always le */
+ pSMB->ByteCount = 0;
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc));
+ } else { /* decode response */
+ __u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
+ __u32 data_count = le32_to_cpu(pSMBr->DataCount);
+ if ((pSMBr->ByteCount < 2) || (data_offset > 512))
+ /* BB also check enough total bytes returned */
+ rc = -EIO; /* bad smb */
+ else {
+ if(data_count && (data_count < 2048)) {
+ char * end_of_smb = pSMBr->ByteCount + (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) {
+ cFYI(1,("reparse buf extended beyond SMB"));
+ rc = -EIO;
+ goto qreparse_out;
+ }
+
+ if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len = UniStrnlen((wchar_t *)
+ (reparse_buf->LinkNamesBuf +
+ reparse_buf->TargetNameOffset),
+ min(buflen/2, reparse_buf->TargetNameLen / 2));
+ cifs_strfromUCS_le(symlinkinfo,
+ (wchar_t *) (reparse_buf->LinkNamesBuf +
+ reparse_buf->TargetNameOffset),
+ name_len, nls_codepage);
+ } else { /* ASCII names */
+ strncpy(symlinkinfo,reparse_buf->LinkNamesBuf +
+ reparse_buf->TargetNameOffset,
+ min_t(const int, buflen, reparse_buf->TargetNameLen));
+ }
+ } else {
+ rc = -EIO;
+ cFYI(1,("Invalid return data count on get reparse info ioctl"));
+ }
+ symlinkinfo[buflen] = 0; /* just in case so the caller
+ does not go off the end of the buffer */
+ cFYI(1,("readlink result - %s ",symlinkinfo));
+ }
+ }
+qreparse_out:
+ if (pSMB)
+ 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;
+}
+
+#ifdef CONFIG_CIFS_POSIX
+
+/*Convert an Access Control Entry from wire format to local POSIX xattr format*/
+static void cifs_convert_ace(posix_acl_xattr_entry * ace, struct cifs_posix_ace * cifs_ace)
+{
+ /* u8 cifs fields do not need le conversion */
+ ace->e_perm = (__u16)cifs_ace->cifs_e_perm;
+ ace->e_tag = (__u16)cifs_ace->cifs_e_tag;
+ ace->e_id = (__u32)le64_to_cpu(cifs_ace->cifs_uid);
+ /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */
+
+ return;
+}
+
+/* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */
+static int cifs_copy_posix_acl(char * trgt,char * src, const int buflen,const int acl_type,const int size_of_data_area)
+{
+ int size = 0;
+ int i;
+ __u16 count;
+ struct cifs_posix_ace * pACE;
+ struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)src;
+ posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)trgt;
+
+ if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
+ return -EOPNOTSUPP;
+
+ if(acl_type & ACL_TYPE_ACCESS) {
+ count = le16_to_cpu(cifs_acl->access_entry_count);
+ pACE = &cifs_acl->ace_array[0];
+ size = sizeof(struct cifs_posix_acl);
+ size += sizeof(struct cifs_posix_ace) * count;
+ /* check if we would go beyond end of SMB */
+ if(size_of_data_area < size) {
+ cFYI(1,("bad CIFS POSIX ACL size %d vs. %d",size_of_data_area,size));
+ return -EINVAL;
+ }
+ } else if(acl_type & ACL_TYPE_DEFAULT) {
+ count = le16_to_cpu(cifs_acl->access_entry_count);
+ size = sizeof(struct cifs_posix_acl);
+ size += sizeof(struct cifs_posix_ace) * count;
+/* skip past access ACEs to get to default ACEs */
+ pACE = &cifs_acl->ace_array[count];
+ count = le16_to_cpu(cifs_acl->default_entry_count);
+ size += sizeof(struct cifs_posix_ace) * count;
+ /* check if we would go beyond end of SMB */
+ if(size_of_data_area < size)
+ return -EINVAL;
+ } else {
+ /* illegal type */
+ return -EINVAL;
+ }
+
+ size = posix_acl_xattr_size(count);
+ if((buflen == 0) || (local_acl == NULL)) {
+ /* used to query ACL EA size */
+ } else if(size > buflen) {
+ return -ERANGE;
+ } else /* buffer big enough */ {
+ local_acl->a_version = POSIX_ACL_XATTR_VERSION;
+ for(i = 0;i < count ;i++) {
+ cifs_convert_ace(&local_acl->a_entries[i],pACE);
+ pACE ++;
+ }
+ }
+ return size;
+}
+
+static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace * cifs_ace,
+ const posix_acl_xattr_entry * local_ace)
+{
+ __u16 rc = 0; /* 0 = ACL converted ok */
+
+ cifs_ace->cifs_e_perm = (__u8)cpu_to_le16(local_ace->e_perm);
+ cifs_ace->cifs_e_tag = (__u8)cpu_to_le16(local_ace->e_tag);
+ /* BB is there a better way to handle the large uid? */
+ if(local_ace->e_id == -1) {
+ /* Probably no need to le convert -1 on any arch but can not hurt */
+ cifs_ace->cifs_uid = cpu_to_le64(-1);
+ } else
+ cifs_ace->cifs_uid = (__u64)cpu_to_le32(local_ace->e_id);
+ /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/
+ return rc;
+}
+
+/* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */
+static __u16 ACL_to_cifs_posix(char * parm_data,const char * pACL,const int buflen,
+ const int acl_type)
+{
+ __u16 rc = 0;
+ struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)parm_data;
+ posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)pACL;
+ int count;
+ int i;
+
+ if((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL))
+ return 0;
+
+ count = posix_acl_xattr_count((size_t)buflen);
+ cFYI(1,("setting acl with %d entries from buf of length %d and version of %d",
+ count,buflen,local_acl->a_version));
+ if(local_acl->a_version != 2) {
+ cFYI(1,("unknown POSIX ACL version %d",local_acl->a_version));
+ return 0;
+ }
+ cifs_acl->version = cpu_to_le16(1);
+ if(acl_type == ACL_TYPE_ACCESS)
+ cifs_acl->access_entry_count = count;
+ else if(acl_type == ACL_TYPE_DEFAULT)
+ cifs_acl->default_entry_count = count;
+ else {
+ cFYI(1,("unknown ACL type %d",acl_type));
+ return 0;
+ }
+ for(i=0;i<count;i++) {
+ rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i],
+ &local_acl->a_entries[i]);
+ if(rc != 0) {
+ /* ACE not converted */
+ break;
+ }
+ }
+ if(rc == 0) {
+ rc = (__u16)(count * sizeof(struct cifs_posix_ace));
+ rc += sizeof(struct cifs_posix_acl);
+ /* BB add check to make sure ACL does not overflow SMB */
+ }
+ return rc;
+}
+
+int
+CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
+ const unsigned char *searchName,
+ char *acl_inf, const int buflen, const int acl_type,
+ const struct nls_table *nls_codepage)
+{
+/* SMB_QUERY_POSIX_ACL */
+ TRANSACTION2_QPI_REQ *pSMB = NULL;
+ TRANSACTION2_QPI_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName));
+
+queryAclRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ pSMB->FileName[name_len] = 0;
+ pSMB->FileName[name_len+1] = 0;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, searchName, name_len);
+ }
+
+ params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ /* BB find exact max data count below from sess structure BB */
+ pSMB->MaxDataCount = cpu_to_le16(4000);
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(
+ offsetof(struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in Query POSIX ACL = %d", rc));
+ } else {
+ /* decode response */
+
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+ if (rc || (pSMBr->ByteCount < 2))
+ /* BB also check enough total bytes returned */
+ rc = -EIO; /* bad smb */
+ else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
+ rc = cifs_copy_posix_acl(acl_inf,
+ (char *)&pSMBr->hdr.Protocol+data_offset,
+ buflen,acl_type,count);
+ }
+ }
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto queryAclRetry;
+ return rc;
+}
+
+int
+CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
+ const unsigned char *fileName,
+ const char *local_acl, const int buflen, const int acl_type,
+ const struct nls_table *nls_codepage)
+{
+ struct smb_com_transaction2_spi_req *pSMB = NULL;
+ struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
+ char *parm_data;
+ int name_len;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, byte_count, data_count, param_offset, offset;
+
+ cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName));
+setAclRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, fileName, PATH_MAX
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fileName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, fileName, name_len);
+ }
+ params = 6 + name_len;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_spi_req,
+ InformationLevel) - 4;
+ offset = param_offset + params;
+ parm_data = ((char *) &pSMB->hdr.Protocol) + offset;
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+
+ /* convert to on the wire format for POSIX ACL */
+ data_count = ACL_to_cifs_posix(parm_data,local_acl,buflen,acl_type);
+
+ if(data_count == 0) {
+ rc = -EOPNOTSUPP;
+ goto setACLerrorExit;
+ }
+ pSMB->DataOffset = cpu_to_le16(offset);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
+ pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL);
+ byte_count = 3 /* pad */ + params + data_count;
+ pSMB->DataCount = cpu_to_le16(data_count);
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Set POSIX ACL returned %d", rc));
+ }
+
+setACLerrorExit:
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto setAclRetry;
+ return rc;
+}
+
+#endif
+
+int
+CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
+ const unsigned char *searchName,
+ FILE_ALL_INFO * pFindData,
+ const struct nls_table *nls_codepage)
+{
+/* level 263 SMB_QUERY_FILE_ALL_INFO */
+ TRANSACTION2_QPI_REQ *pSMB = NULL;
+ TRANSACTION2_QPI_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+ __u16 params, byte_count;
+
+/* cFYI(1, ("In QPathInfo path %s", searchName)); */
+QPathInfoRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, searchName, name_len);
+ }
+
+ params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in QPathInfo = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if (rc || (pSMBr->ByteCount < 40))
+ rc = -EIO; /* bad smb */
+ else if (pFindData){
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ memcpy((char *) pFindData,
+ (char *) &pSMBr->hdr.Protocol +
+ data_offset, sizeof (FILE_ALL_INFO));
+ } else
+ rc = -ENOMEM;
+ }
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto QPathInfoRetry;
+
+ return rc;
+}
+
+int
+CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon,
+ const unsigned char *searchName,
+ FILE_UNIX_BASIC_INFO * pFindData,
+ const struct nls_table *nls_codepage)
+{
+/* SMB_QUERY_FILE_UNIX_BASIC */
+ TRANSACTION2_QPI_REQ *pSMB = NULL;
+ TRANSACTION2_QPI_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned = 0;
+ int name_len;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In QPathInfo (Unix) the path %s", searchName));
+UnixQPathInfoRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, searchName, name_len);
+ }
+
+ params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxDataCount = cpu_to_le16(4000);
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in QPathInfo = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
+ rc = -EIO; /* bad smb */
+ } else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ memcpy((char *) pFindData,
+ (char *) &pSMBr->hdr.Protocol +
+ data_offset,
+ sizeof (FILE_UNIX_BASIC_INFO));
+ }
+ }
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto UnixQPathInfoRetry;
+
+ return rc;
+}
+
+#if 0 /* function unused at present */
+int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon,
+ const char *searchName, FILE_ALL_INFO * findData,
+ const struct nls_table *nls_codepage)
+{
+/* level 257 SMB_ */
+ TRANSACTION2_FFIRST_REQ *pSMB = NULL;
+ TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In FindUnique"));
+findUniqueRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, searchName, name_len);
+ }
+
+ params = 12 + name_len /* includes null */ ;
+ pSMB->TotalDataCount = 0; /* no EAs */
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(
+ offsetof(struct smb_com_transaction2_ffirst_req,InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1; /* one byte, no need to le convert */
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->SearchAttributes =
+ cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
+ ATTR_DIRECTORY);
+ pSMB->SearchCount = cpu_to_le16(16); /* BB increase */
+ pSMB->SearchFlags = cpu_to_le16(1);
+ pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
+ pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+
+ if (rc) {
+ cFYI(1, ("Send error in FindFileDirInfo = %d", rc));
+ } else { /* decode response */
+
+ /* BB fill in */
+ }
+
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto findUniqueRetry;
+
+ return rc;
+}
+#endif /* end unused (temporarily) function */
+
+/* xid, tcon, searchName and codepage are input parms, rest are returned */
+int
+CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
+ const char *searchName,
+ const struct nls_table *nls_codepage,
+ __u16 * pnetfid,
+ struct cifs_search_info * psrch_inf)
+{
+/* level 257 SMB_ */
+ TRANSACTION2_FFIRST_REQ *pSMB = NULL;
+ TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
+ T2_FFIRST_RSP_PARMS * parms;
+ int rc = 0;
+ int bytes_returned = 0;
+ int name_len;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In FindFirst"));
+
+findFirstRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName,searchName,
+ PATH_MAX, nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ pSMB->FileName[name_len] = 0; /* null terminate just in case */
+ pSMB->FileName[name_len+1] = 0;
+ } else { /* BB add check for overrun of SMB buf BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+/* BB fix here and in unicode clause above ie
+ if(name_len > buffersize-header)
+ free buffer exit; BB */
+ strncpy(pSMB->FileName, searchName, name_len);
+ pSMB->FileName[name_len] = 0; /* just in case */
+ }
+
+ 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->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(
+ offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
+ pSMB->SearchAttributes =
+ cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
+ ATTR_DIRECTORY);
+ pSMB->SearchCount= cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
+ pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END |
+ CIFS_SEARCH_RETURN_RESUME);
+ pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
+
+ /* BB what should we set StorageType to? Does it matter? BB */
+ pSMB->SearchStorageType = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ 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 */
+ /* BB Add code to handle unsupported level rc */
+ cFYI(1, ("Error in FindFirst = %d", rc));
+
+ if (pSMB)
+ cifs_buf_release(pSMB);
+
+ /* BB eventually could optimize out free and realloc of buf */
+ /* for this case */
+ if (rc == -EAGAIN)
+ goto findFirstRetry;
+ } else { /* decode response */
+ /* BB remember to free buffer if error BB */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+ if(rc == 0) {
+ if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
+ psrch_inf->unicode = TRUE;
+ else
+ psrch_inf->unicode = FALSE;
+
+ psrch_inf->ntwrk_buf_start = (char *)pSMBr;
+ psrch_inf->srch_entries_start =
+ (char *) &pSMBr->hdr.Protocol +
+ le16_to_cpu(pSMBr->t2.DataOffset);
+
+ parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
+ le16_to_cpu(pSMBr->t2.ParameterOffset));
+
+ if(parms->EndofSearch)
+ psrch_inf->endOfSearch = TRUE;
+ else
+ psrch_inf->endOfSearch = FALSE;
+
+ psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount);
+ psrch_inf->index_of_last_entry =
+ psrch_inf->entries_in_buffer;
+/*cFYI(1,("entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */
+ *pnetfid = parms->SearchHandle;
+ } else {
+ cifs_buf_release(pSMB);
+ }
+ }
+
+ return rc;
+}
+
+int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
+ __u16 searchHandle, struct cifs_search_info * psrch_inf)
+{
+ TRANSACTION2_FNEXT_REQ *pSMB = NULL;
+ TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
+ T2_FNEXT_RSP_PARMS * parms;
+ char *response_data;
+ int rc = 0;
+ int bytes_returned, name_len;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In FindNext"));
+
+ if(psrch_inf->endOfSearch == TRUE)
+ return -ENOENT;
+
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ params = 14; /* includes 2 bytes of null string, converted to LE below */
+ 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->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(
+ offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT);
+ pSMB->SearchHandle = searchHandle; /* always kept as le */
+ pSMB->SearchCount =
+ cpu_to_le16(CIFSMaxBufSize / sizeof (FILE_UNIX_INFO));
+ /* test for Unix extensions */
+/* if (tcon->ses->capabilities & CAP_UNIX) {
+ pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX);
+ psrch_inf->info_level = SMB_FIND_FILE_UNIX;
+ } else {
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
+ psrch_inf->info_level = SMB_FIND_FILE_DIRECTORY_INFO;
+ } */
+ pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
+ pSMB->ResumeKey = psrch_inf->resume_key;
+ pSMB->SearchFlags =
+ cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME);
+
+ name_len = psrch_inf->resume_name_len;
+ params += name_len;
+ if(name_len < PATH_MAX) {
+ memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len);
+ byte_count += name_len;
+ } else {
+ rc = -EINVAL;
+ goto FNext2_err_exit;
+ }
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+
+ if (rc) {
+ if (rc == -EBADF) {
+ psrch_inf->endOfSearch = TRUE;
+ rc = 0; /* search probably was closed at end of search above */
+ } else
+ cFYI(1, ("FindNext returned = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if(rc == 0) {
+ /* BB fixme add lock for file (srch_info) struct here */
+ if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
+ psrch_inf->unicode = TRUE;
+ else
+ psrch_inf->unicode = FALSE;
+ response_data = (char *) &pSMBr->hdr.Protocol +
+ le16_to_cpu(pSMBr->t2.ParameterOffset);
+ parms = (T2_FNEXT_RSP_PARMS *)response_data;
+ response_data = (char *)&pSMBr->hdr.Protocol +
+ le16_to_cpu(pSMBr->t2.DataOffset);
+ cifs_buf_release(psrch_inf->ntwrk_buf_start);
+ psrch_inf->srch_entries_start = response_data;
+ psrch_inf->ntwrk_buf_start = (char *)pSMB;
+ if(parms->EndofSearch)
+ psrch_inf->endOfSearch = TRUE;
+ else
+ psrch_inf->endOfSearch = FALSE;
+
+ psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount);
+ psrch_inf->index_of_last_entry +=
+ psrch_inf->entries_in_buffer;
+/* cFYI(1,("fnxt2 entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */
+
+ /* BB fixme add unlock here */
+ }
+
+ }
+
+ /* BB On error, should we leave previous search buf (and count and
+ last entry fields) intact or free the previous one? */
+
+ /* Note: On -EAGAIN error only caller can retry on handle based calls
+ since file handle passed in no longer valid */
+FNext2_err_exit:
+ if (rc != 0)
+ cifs_buf_release(pSMB);
+
+ return rc;
+}
+
+int
+CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle)
+{
+ int rc = 0;
+ FINDCLOSE_REQ *pSMB = NULL;
+ CLOSE_RSP *pSMBr = NULL; /* BB removeme BB */
+ int bytes_returned;
+
+ cFYI(1, ("In CIFSSMBFindClose"));
+ rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB);
+
+ /* no sense returning error if session restarted
+ as file handle has been closed */
+ if(rc == -EAGAIN)
+ return 0;
+ if (rc)
+ return rc;
+
+ pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
+ pSMB->FileID = searchHandle;
+ pSMB->ByteCount = 0;
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cERROR(1, ("Send error in FindClose = %d", rc));
+ }
+ cifs_small_buf_release(pSMB);
+
+ /* Since session is dead, search handle closed on server already */
+ if (rc == -EAGAIN)
+ rc = 0;
+
+ return rc;
+}
+
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+int
+CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
+ const unsigned char *searchName,
+ __u64 * inode_number,
+ const struct nls_table *nls_codepage)
+{
+ int rc = 0;
+ TRANSACTION2_QPI_REQ *pSMB = NULL;
+ TRANSACTION2_QPI_RSP *pSMBr = NULL;
+ int name_len, bytes_returned;
+ __u16 params, byte_count;
+
+ cFYI(1,("In GetSrvInodeNum for %s",searchName));
+ if(tcon == NULL)
+ return -ENODEV;
+
+GetInodeNumberRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName,
+ PATH_MAX,nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, searchName, name_len);
+ }
+
+ params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ /* BB find exact max data count below from sess structure BB */
+ pSMB->MaxDataCount = cpu_to_le16(4000);
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("error %d in QueryInternalInfo", rc));
+ } else {
+ /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+ if (rc || (pSMBr->ByteCount < 2))
+ /* BB also check enough total bytes returned */
+ /* If rc should we check for EOPNOSUPP and
+ disable the srvino flag? or in caller? */
+ rc = -EIO; /* bad smb */
+ else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
+ struct file_internal_info * pfinfo;
+ /* BB Do we need a cast or hash here ? */
+ if(count < 8) {
+ cFYI(1, ("Illegal size ret in QryIntrnlInf"));
+ rc = -EIO;
+ goto GetInodeNumOut;
+ }
+ pfinfo = (struct file_internal_info *)
+ (data_offset + (char *) &pSMBr->hdr.Protocol);
+ *inode_number = pfinfo->UniqueId;
+ }
+ }
+GetInodeNumOut:
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto GetInodeNumberRetry;
+ return rc;
+}
+#endif /* CIFS_EXPERIMENTAL */
+
+int
+CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
+ const unsigned char *searchName,
+ unsigned char **targetUNCs,
+ unsigned int *number_of_UNC_in_array,
+ const struct nls_table *nls_codepage)
+{
+/* TRANS2_GET_DFS_REFERRAL */
+ TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL;
+ TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL;
+ struct dfs_referral_level_3 * referrals = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+ unsigned int i;
+ char * temp;
+ __u16 params, byte_count;
+ *number_of_UNC_in_array = 0;
+ *targetUNCs = NULL;
+
+ cFYI(1, ("In GetDFSRefer the path %s", searchName));
+ if (ses == NULL)
+ return -ENODEV;
+getDFSRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->hdr.Tid = ses->ipc_tid;
+ pSMB->hdr.Uid = ses->Suid;
+ if (ses->capabilities & CAP_STATUS32) {
+ pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS;
+ }
+ if (ses->capabilities & CAP_DFS) {
+ pSMB->hdr.Flags2 |= SMBFLG2_DFS;
+ }
+
+ if (ses->capabilities & CAP_UNICODE) {
+ pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->RequestFileName,
+ searchName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->RequestFileName, searchName, name_len);
+ }
+
+ params = 2 /* level */ + name_len /*includes null */ ;
+ pSMB->TotalDataCount = 0;
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->MaxParameterCount = 0;
+ pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL);
+ byte_count = params + 3 /* pad */ ;
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->MaxReferralLevel = cpu_to_le16(3);
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in GetDFSRefer = %d", rc));
+ } else { /* decode response */
+/* BB Add logic to parse referrals here */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if (rc || (pSMBr->ByteCount < 17)) /* BB also check enough total bytes returned */
+ rc = -EIO; /* bad smb */
+ else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount);
+
+ cFYI(1,
+ ("Decoding GetDFSRefer response. BCC: %d Offset %d",
+ pSMBr->ByteCount, data_offset));
+ referrals =
+ (struct dfs_referral_level_3 *)
+ (8 /* sizeof start of data block */ +
+ data_offset +
+ (char *) &pSMBr->hdr.Protocol);
+ cFYI(1,("num_referrals: %d dfs flags: 0x%x ... \nfor referral one refer size: 0x%x srv type: 0x%x refer flags: 0x%x ttl: 0x%x",
+ le16_to_cpu(pSMBr->NumberOfReferrals),le16_to_cpu(pSMBr->DFSFlags), le16_to_cpu(referrals->ReferralSize),le16_to_cpu(referrals->ServerType),le16_to_cpu(referrals->ReferralFlags),le16_to_cpu(referrals->TimeToLive)));
+ /* BB This field is actually two bytes in from start of
+ data block so we could do safety check that DataBlock
+ begins at address of pSMBr->NumberOfReferrals */
+ *number_of_UNC_in_array = le16_to_cpu(pSMBr->NumberOfReferrals);
+
+ /* BB Fix below so can return more than one referral */
+ if(*number_of_UNC_in_array > 1)
+ *number_of_UNC_in_array = 1;
+
+ /* get the length of the strings describing refs */
+ name_len = 0;
+ for(i=0;i<*number_of_UNC_in_array;i++) {
+ /* make sure that DfsPathOffset not past end */
+ __u16 offset = le16_to_cpu(referrals->DfsPathOffset);
+ if (offset > data_count) {
+ /* if invalid referral, stop here and do
+ not try to copy any more */
+ *number_of_UNC_in_array = i;
+ break;
+ }
+ temp = ((char *)referrals) + offset;
+
+ if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len += UniStrnlen((wchar_t *)temp,data_count);
+ } else {
+ name_len += strnlen(temp,data_count);
+ }
+ referrals++;
+ /* BB add check that referral pointer does not fall off end PDU */
+
+ }
+ /* BB add check for name_len bigger than bcc */
+ *targetUNCs =
+ kmalloc(name_len+1+ (*number_of_UNC_in_array),GFP_KERNEL);
+ if(*targetUNCs == NULL) {
+ rc = -ENOMEM;
+ goto GetDFSRefExit;
+ }
+ /* copy the ref strings */
+ referrals =
+ (struct dfs_referral_level_3 *)
+ (8 /* sizeof data hdr */ +
+ data_offset +
+ (char *) &pSMBr->hdr.Protocol);
+
+ for(i=0;i<*number_of_UNC_in_array;i++) {
+ temp = ((char *)referrals) + le16_to_cpu(referrals->DfsPathOffset);
+ if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
+ cifs_strfromUCS_le(*targetUNCs,
+ (wchar_t *) temp, name_len, nls_codepage);
+ } else {
+ strncpy(*targetUNCs,temp,name_len);
+ }
+ /* BB update target_uncs pointers */
+ referrals++;
+ }
+ temp = *targetUNCs;
+ temp[name_len] = 0;
+ }
+
+ }
+GetDFSRefExit:
+ if (pSMB)
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto getDFSRetry;
+
+ return rc;
+}
+
+int
+CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon,
+ struct kstatfs *FSData, const struct nls_table *nls_codepage)
+{
+/* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */
+ TRANSACTION2_QFSI_REQ *pSMB = NULL;
+ TRANSACTION2_QFSI_RSP *pSMBr = NULL;
+ FILE_SYSTEM_INFO *response_data;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In QFSInfo"));
+QFSInfoRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ params = 2; /* level */
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cERROR(1, ("Send error in QFSInfo = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if (rc || (pSMBr->ByteCount < 24)) /* BB alsO CHEck enough total bytes returned */
+ rc = -EIO; /* bad smb */
+ else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ cFYI(1,
+ ("Decoding qfsinfo response. BCC: %d Offset %d",
+ pSMBr->ByteCount, data_offset));
+
+ response_data =
+ (FILE_SYSTEM_INFO
+ *) (((char *) &pSMBr->hdr.Protocol) +
+ data_offset);
+ FSData->f_bsize =
+ le32_to_cpu(response_data->BytesPerSector) *
+ le32_to_cpu(response_data->
+ SectorsPerAllocationUnit);
+ FSData->f_blocks =
+ le64_to_cpu(response_data->TotalAllocationUnits);
+ FSData->f_bfree = FSData->f_bavail =
+ le64_to_cpu(response_data->FreeAllocationUnits);
+ cFYI(1,
+ ("Blocks: %lld Free: %lld Block size %ld",
+ (unsigned long long)FSData->f_blocks,
+ (unsigned long long)FSData->f_bfree,
+ FSData->f_bsize));
+ }
+ }
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto QFSInfoRetry;
+
+ return rc;
+}
+
+int
+CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon,
+ const struct nls_table *nls_codepage)
+{
+/* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */
+ TRANSACTION2_QFSI_REQ *pSMB = NULL;
+ TRANSACTION2_QFSI_RSP *pSMBr = NULL;
+ FILE_SYSTEM_ATTRIBUTE_INFO *response_data;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In QFSAttributeInfo"));
+QFSAttributeRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ params = 2; /* level */
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cERROR(1, ("Send error in QFSAttributeInfo = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if (rc || (pSMBr->ByteCount < 13)) { /* BB also check enough bytes returned */
+ rc = -EIO; /* bad smb */
+ } else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ response_data =
+ (FILE_SYSTEM_ATTRIBUTE_INFO
+ *) (((char *) &pSMBr->hdr.Protocol) +
+ data_offset);
+ memcpy(&tcon->fsAttrInfo, response_data,
+ sizeof (FILE_SYSTEM_ATTRIBUTE_INFO));
+ }
+ }
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto QFSAttributeRetry;
+
+ return rc;
+}
+
+int
+CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon,
+ const struct nls_table *nls_codepage)
+{
+/* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */
+ TRANSACTION2_QFSI_REQ *pSMB = NULL;
+ TRANSACTION2_QFSI_RSP *pSMBr = NULL;
+ FILE_SYSTEM_DEVICE_INFO *response_data;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In QFSDeviceInfo"));
+QFSDeviceRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ params = 2; /* level */
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
+
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in QFSDeviceInfo = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if (rc || (pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO)))
+ rc = -EIO; /* bad smb */
+ else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ response_data =
+ (FILE_SYSTEM_DEVICE_INFO
+ *) (((char *) &pSMBr->hdr.Protocol) +
+ data_offset);
+ memcpy(&tcon->fsDevInfo, response_data,
+ sizeof (FILE_SYSTEM_DEVICE_INFO));
+ }
+ }
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto QFSDeviceRetry;
+
+ return rc;
+}
+
+int
+CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon,
+ const struct nls_table *nls_codepage)
+{
+/* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */
+ TRANSACTION2_QFSI_REQ *pSMB = NULL;
+ TRANSACTION2_QFSI_RSP *pSMBr = NULL;
+ FILE_SYSTEM_UNIX_INFO *response_data;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In QFSUnixInfo"));
+QFSUnixRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ params = 2; /* level */
+ pSMB->TotalDataCount = 0;
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ byte_count = params + 1 /* pad */ ;
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
+ smb_com_transaction2_qfsi_req, InformationLevel) - 4);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cERROR(1, ("Send error in QFSUnixInfo = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if (rc || (pSMBr->ByteCount < 13)) {
+ rc = -EIO; /* bad smb */
+ } else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ response_data =
+ (FILE_SYSTEM_UNIX_INFO
+ *) (((char *) &pSMBr->hdr.Protocol) +
+ data_offset);
+ memcpy(&tcon->fsUnixInfo, response_data,
+ sizeof (FILE_SYSTEM_UNIX_INFO));
+ }
+ }
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto QFSUnixRetry;
+
+
+ return rc;
+}
+
+
+int
+CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
+ struct kstatfs *FSData, const struct nls_table *nls_codepage)
+{
+/* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */
+ TRANSACTION2_QFSI_REQ *pSMB = NULL;
+ TRANSACTION2_QFSI_RSP *pSMBr = NULL;
+ FILE_SYSTEM_POSIX_INFO *response_data;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In QFSPosixInfo"));
+QFSPosixRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ params = 2; /* level */
+ pSMB->TotalDataCount = 0;
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ byte_count = params + 1 /* pad */ ;
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
+ smb_com_transaction2_qfsi_req, InformationLevel) - 4);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in QFSUnixInfo = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if (rc || (pSMBr->ByteCount < 13)) {
+ rc = -EIO; /* bad smb */
+ } else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ response_data =
+ (FILE_SYSTEM_POSIX_INFO
+ *) (((char *) &pSMBr->hdr.Protocol) +
+ data_offset);
+ FSData->f_bsize =
+ le32_to_cpu(response_data->BlockSize);
+ FSData->f_blocks =
+ le64_to_cpu(response_data->TotalBlocks);
+ FSData->f_bfree =
+ le64_to_cpu(response_data->BlocksAvail);
+ if(response_data->UserBlocksAvail == -1) {
+ FSData->f_bavail = FSData->f_bfree;
+ } else {
+ FSData->f_bavail =
+ le64_to_cpu(response_data->UserBlocksAvail);
+ }
+ if(response_data->TotalFileNodes != -1)
+ FSData->f_files =
+ le64_to_cpu(response_data->TotalFileNodes);
+ if(response_data->FreeFileNodes != -1)
+ FSData->f_ffree =
+ le64_to_cpu(response_data->FreeFileNodes);
+ }
+ }
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto QFSPosixRetry;
+
+ return rc;
+}
+
+
+/* We can not use write of zero bytes trick to
+ set file size due to need for large file support. Also note that
+ this SetPathInfo is preferred to SetFileInfo based method in next
+ routine which is only needed to work around a sharing violation bug
+ in Samba which this routine can run into */
+
+int
+CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName,
+ __u64 size, int SetAllocation, const struct nls_table *nls_codepage)
+{
+ struct smb_com_transaction2_spi_req *pSMB = NULL;
+ struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
+ struct file_end_of_file_info *parm_data;
+ int name_len;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, byte_count, data_count, param_offset, offset;
+
+ cFYI(1, ("In SetEOF"));
+SetEOFRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, fileName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fileName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, fileName, name_len);
+ }
+ params = 6 + name_len;
+ data_count = sizeof (struct file_end_of_file_info);
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_spi_req,
+ InformationLevel) - 4;
+ offset = param_offset + params;
+ if(SetAllocation) {
+ if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
+ else
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
+ } else /* Set File Size */ {
+ if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
+ else
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
+ }
+
+ parm_data =
+ (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
+ offset);
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+ pSMB->DataOffset = cpu_to_le16(offset);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
+ byte_count = 3 /* pad */ + params + data_count;
+ pSMB->DataCount = cpu_to_le16(data_count);
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ parm_data->FileSize = cpu_to_le64(size);
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("SetPathInfo (file size) returned %d", rc));
+ }
+
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto SetEOFRetry;
+
+ return rc;
+}
+
+int
+CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
+ __u16 fid, __u32 pid_of_opener, int SetAllocation)
+{
+ struct smb_com_transaction2_sfi_req *pSMB = NULL;
+ struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
+ char *data_offset;
+ struct file_end_of_file_info *parm_data;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, param_offset, offset, byte_count, count;
+
+ cFYI(1, ("SetFileSize (via SetFileInfo) %lld",
+ (long long)size));
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
+ pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
+
+ params = 6;
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
+ offset = param_offset + params;
+
+ data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
+
+ count = sizeof(struct file_end_of_file_info);
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
+ byte_count = 3 /* pad */ + params + count;
+ pSMB->DataCount = cpu_to_le16(count);
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+ parm_data =
+ (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
+ offset);
+ pSMB->DataOffset = cpu_to_le16(offset);
+ parm_data->FileSize = cpu_to_le64(size);
+ pSMB->Fid = fid;
+ if(SetAllocation) {
+ if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
+ else
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
+ } else /* Set File Size */ {
+ if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
+ else
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
+ }
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1,
+ ("Send error in SetFileInfo (SetFileSize) = %d",
+ rc));
+ }
+
+ if (pSMB)
+ 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;
+}
+
+/* Some legacy servers such as NT4 require that the file times be set on
+ an open handle, rather than by pathname - this is awkward due to
+ potential access conflicts on the open, but it is unavoidable for these
+ old servers since the only other choice is to go from 100 nanosecond DCE
+ time and resort to the original setpathinfo level which takes the ancient
+ DOS time format with 2 second granularity */
+int
+CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_INFO * data,
+ __u16 fid)
+{
+ struct smb_com_transaction2_sfi_req *pSMB = NULL;
+ struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
+ char *data_offset;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, param_offset, offset, byte_count, count;
+
+ cFYI(1, ("Set Times (via SetFileInfo)"));
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ /* At this point there is no need to override the current pid
+ with the pid of the opener, but that could change if we someday
+ use an existing handle (rather than opening one on the fly) */
+ /* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
+ pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/
+
+ params = 6;
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
+ offset = param_offset + params;
+
+ data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
+
+ count = sizeof (FILE_BASIC_INFO);
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
+ byte_count = 3 /* pad */ + params + count;
+ pSMB->DataCount = cpu_to_le16(count);
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+ pSMB->DataOffset = cpu_to_le16(offset);
+ pSMB->Fid = fid;
+ if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
+ pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
+ else
+ pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ memcpy(data_offset,data,sizeof(FILE_BASIC_INFO));
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1,("Send error in Set Time (SetFileInfo) = %d",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;
+}
+
+
+int
+CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName,
+ const FILE_BASIC_INFO * data,
+ const struct nls_table *nls_codepage)
+{
+ TRANSACTION2_SPI_REQ *pSMB = NULL;
+ TRANSACTION2_SPI_RSP *pSMBr = NULL;
+ int name_len;
+ int rc = 0;
+ int bytes_returned = 0;
+ char *data_offset;
+ __u16 params, param_offset, offset, byte_count, count;
+
+ cFYI(1, ("In SetTimes"));
+
+SetTimesRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, fileName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fileName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, fileName, name_len);
+ }
+
+ params = 6 + name_len;
+ count = sizeof (FILE_BASIC_INFO);
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_spi_req,
+ InformationLevel) - 4;
+ offset = param_offset + params;
+ data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+ pSMB->DataOffset = cpu_to_le16(offset);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
+ byte_count = 3 /* pad */ + params + count;
+
+ pSMB->DataCount = cpu_to_le16(count);
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
+ pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
+ else
+ pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ memcpy(data_offset, data, sizeof (FILE_BASIC_INFO));
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("SetPathInfo (times) returned %d", rc));
+ }
+
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto SetTimesRetry;
+
+ return rc;
+}
+
+/* Can not be used to set time stamps yet (due to old DOS time format) */
+/* Can be used to set attributes */
+#if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug
+ handling it anyway and NT4 was what we thought it would be needed for
+ Do not delete it until we prove whether needed for Win9x though */
+int
+CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName,
+ __u16 dos_attrs, const struct nls_table *nls_codepage)
+{
+ SETATTR_REQ *pSMB = NULL;
+ SETATTR_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+
+ cFYI(1, ("In SetAttrLegacy"));
+
+SetAttrLgcyRetry:
+ rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->fileName, fileName,
+ PATH_MAX, nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fileName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->fileName, fileName, name_len);
+ }
+ pSMB->attr = cpu_to_le16(dos_attrs);
+ pSMB->BufferFormat = 0x04;
+ pSMB->hdr.smb_buf_length += name_len + 1;
+ pSMB->ByteCount = cpu_to_le16(name_len + 1);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Error in LegacySetAttr = %d", rc));
+ }
+
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto SetAttrLgcyRetry;
+
+ return rc;
+}
+#endif /* temporarily unneeded SetAttr legacy function */
+
+int
+CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon,
+ char *fileName, __u64 mode, __u64 uid, __u64 gid,
+ dev_t device, const struct nls_table *nls_codepage)
+{
+ TRANSACTION2_SPI_REQ *pSMB = NULL;
+ TRANSACTION2_SPI_RSP *pSMBr = NULL;
+ int name_len;
+ int rc = 0;
+ int bytes_returned = 0;
+ FILE_UNIX_BASIC_INFO *data_offset;
+ __u16 params, param_offset, offset, count, byte_count;
+
+ cFYI(1, ("In SetUID/GID/Mode"));
+setPermsRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, fileName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fileName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, fileName, name_len);
+ }
+
+ params = 6 + name_len;
+ count = sizeof (FILE_UNIX_BASIC_INFO);
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_spi_req,
+ InformationLevel) - 4;
+ offset = param_offset + params;
+ data_offset =
+ (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol +
+ offset);
+ memset(data_offset, 0, count);
+ pSMB->DataOffset = cpu_to_le16(offset);
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
+ byte_count = 3 /* pad */ + params + count;
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->DataCount = cpu_to_le16(count);
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ data_offset->Uid = cpu_to_le64(uid);
+ data_offset->Gid = cpu_to_le64(gid);
+ /* better to leave device as zero when it is */
+ data_offset->DevMajor = cpu_to_le64(MAJOR(device));
+ data_offset->DevMinor = cpu_to_le64(MINOR(device));
+ data_offset->Permissions = cpu_to_le64(mode);
+
+ if(S_ISREG(mode))
+ data_offset->Type = cpu_to_le32(UNIX_FILE);
+ else if(S_ISDIR(mode))
+ data_offset->Type = cpu_to_le32(UNIX_DIR);
+ else if(S_ISLNK(mode))
+ data_offset->Type = cpu_to_le32(UNIX_SYMLINK);
+ else if(S_ISCHR(mode))
+ data_offset->Type = cpu_to_le32(UNIX_CHARDEV);
+ else if(S_ISBLK(mode))
+ data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV);
+ else if(S_ISFIFO(mode))
+ data_offset->Type = cpu_to_le32(UNIX_FIFO);
+ else if(S_ISSOCK(mode))
+ data_offset->Type = cpu_to_le32(UNIX_SOCKET);
+
+
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("SetPathInfo (perms) returned %d", rc));
+ }
+
+ if (pSMB)
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto setPermsRetry;
+ return rc;
+}
+
+int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
+ const int notify_subdirs, const __u16 netfid,
+ __u32 filter, const struct nls_table *nls_codepage)
+{
+ int rc = 0;
+ struct smb_com_transaction_change_notify_req * pSMB = NULL;
+ struct smb_com_transaction_change_notify_rsp * pSMBr = NULL;
+ int bytes_returned;
+
+ cFYI(1, ("In CIFSSMBNotify for file handle %d",(int)netfid));
+ rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ 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 */
+ pSMB->MaxSetupCount = 4;
+ pSMB->Reserved = 0;
+ pSMB->ParameterOffset = 0;
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 4; /* single byte does not need le conversion */
+ pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ if(notify_subdirs)
+ pSMB->WatchTree = 1; /* one byte - no le conversion needed */
+ pSMB->Reserved2 = 0;
+ pSMB->CompletionFilter = cpu_to_le32(filter);
+ pSMB->Fid = netfid; /* file handle always le */
+ pSMB->ByteCount = 0;
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, -1);
+ if (rc) {
+ cFYI(1, ("Error in Notify = %d", rc));
+ }
+ cifs_buf_release(pSMB);
+ return rc;
+}
+#ifdef CONFIG_CIFS_XATTR
+ssize_t
+CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
+ const unsigned char *searchName,
+ char * EAData, size_t buf_size,
+ const struct nls_table *nls_codepage)
+{
+ /* BB assumes one setup word */
+ TRANSACTION2_QPI_REQ *pSMB = NULL;
+ TRANSACTION2_QPI_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+ struct fea * temp_fea;
+ char * temp_ptr;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In Query All EAs path %s", searchName));
+QAllEAsRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, searchName, name_len);
+ }
+
+ params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in QueryAllEAs = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ /* BB also check enough total bytes returned */
+ /* BB we need to improve the validity checking
+ of these trans2 responses */
+ if (rc || (pSMBr->ByteCount < 4))
+ rc = -EIO; /* bad smb */
+ /* else if (pFindData){
+ memcpy((char *) pFindData,
+ (char *) &pSMBr->hdr.Protocol +
+ data_offset, kl);
+ }*/ else {
+ /* check that length of list is not more than bcc */
+ /* check that each entry does not go beyond length
+ of list */
+ /* check that each element of each entry does not
+ go beyond end of list */
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ struct fealist * ea_response_data;
+ rc = 0;
+ /* validate_trans2_offsets() */
+ /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
+ ea_response_data = (struct fealist *)
+ (((char *) &pSMBr->hdr.Protocol) +
+ data_offset);
+ name_len = le32_to_cpu(ea_response_data->list_len);
+ cFYI(1,("ea length %d", name_len));
+ if(name_len <= 8) {
+ /* returned EA size zeroed at top of function */
+ cFYI(1,("empty EA list returned from server"));
+ } else {
+ /* account for ea list len */
+ name_len -= 4;
+ temp_fea = ea_response_data->list;
+ temp_ptr = (char *)temp_fea;
+ while(name_len > 0) {
+ __u16 value_len;
+ name_len -= 4;
+ temp_ptr += 4;
+ rc += temp_fea->name_len;
+ /* account for prefix user. and trailing null */
+ rc = rc + 5 + 1;
+ if(rc<(int)buf_size) {
+ memcpy(EAData,"user.",5);
+ EAData+=5;
+ memcpy(EAData,temp_ptr,temp_fea->name_len);
+ EAData+=temp_fea->name_len;
+ /* null terminate name */
+ *EAData = 0;
+ EAData = EAData + 1;
+ } else if(buf_size == 0) {
+ /* skip copy - calc size only */
+ } else {
+ /* stop before overrun buffer */
+ rc = -ERANGE;
+ break;
+ }
+ name_len -= temp_fea->name_len;
+ temp_ptr += temp_fea->name_len;
+ /* account for trailing null */
+ name_len--;
+ temp_ptr++;
+ value_len = le16_to_cpu(temp_fea->value_len);
+ name_len -= value_len;
+ temp_ptr += value_len;
+ /* BB check that temp_ptr is still within smb BB*/
+ /* no trailing null to account for in value len */
+ /* go on to next EA */
+ temp_fea = (struct fea *)temp_ptr;
+ }
+ }
+ }
+ }
+ if (pSMB)
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto QAllEAsRetry;
+
+ return (ssize_t)rc;
+}
+
+ssize_t CIFSSMBQueryEA(const int xid,struct cifsTconInfo * tcon,
+ const unsigned char * searchName,const unsigned char * ea_name,
+ unsigned char * ea_value, size_t buf_size,
+ const struct nls_table *nls_codepage)
+{
+ TRANSACTION2_QPI_REQ *pSMB = NULL;
+ TRANSACTION2_QPI_RSP *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ int name_len;
+ struct fea * temp_fea;
+ char * temp_ptr;
+ __u16 params, byte_count;
+
+ cFYI(1, ("In Query EA path %s", searchName));
+QEARetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(searchName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, searchName, name_len);
+ }
+
+ params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ pSMB->ParameterOffset = cpu_to_le16(offsetof(
+ struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->TotalParameterCount = cpu_to_le16(params);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in Query EA = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ /* BB also check enough total bytes returned */
+ /* BB we need to improve the validity checking
+ of these trans2 responses */
+ if (rc || (pSMBr->ByteCount < 4))
+ rc = -EIO; /* bad smb */
+ /* else if (pFindData){
+ memcpy((char *) pFindData,
+ (char *) &pSMBr->hdr.Protocol +
+ data_offset, kl);
+ }*/ else {
+ /* check that length of list is not more than bcc */
+ /* check that each entry does not go beyond length
+ of list */
+ /* check that each element of each entry does not
+ go beyond end of list */
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ struct fealist * ea_response_data;
+ rc = -ENODATA;
+ /* validate_trans2_offsets() */
+ /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
+ ea_response_data = (struct fealist *)
+ (((char *) &pSMBr->hdr.Protocol) +
+ data_offset);
+ name_len = le32_to_cpu(ea_response_data->list_len);
+ cFYI(1,("ea length %d", name_len));
+ if(name_len <= 8) {
+ /* returned EA size zeroed at top of function */
+ cFYI(1,("empty EA list returned from server"));
+ } else {
+ /* account for ea list len */
+ name_len -= 4;
+ temp_fea = ea_response_data->list;
+ temp_ptr = (char *)temp_fea;
+ /* loop through checking if we have a matching
+ name and then return the associated value */
+ while(name_len > 0) {
+ __u16 value_len;
+ name_len -= 4;
+ temp_ptr += 4;
+ value_len = le16_to_cpu(temp_fea->value_len);
+ /* BB validate that value_len falls within SMB,
+ even though maximum for name_len is 255 */
+ if(memcmp(temp_fea->name,ea_name,
+ temp_fea->name_len) == 0) {
+ /* found a match */
+ rc = value_len;
+ /* account for prefix user. and trailing null */
+ if(rc<=(int)buf_size) {
+ memcpy(ea_value,
+ temp_fea->name+temp_fea->name_len+1,
+ rc);
+ /* ea values, unlike ea names,
+ are not null terminated */
+ } else if(buf_size == 0) {
+ /* skip copy - calc size only */
+ } else {
+ /* stop before overrun buffer */
+ rc = -ERANGE;
+ }
+ break;
+ }
+ name_len -= temp_fea->name_len;
+ temp_ptr += temp_fea->name_len;
+ /* account for trailing null */
+ name_len--;
+ temp_ptr++;
+ name_len -= value_len;
+ temp_ptr += value_len;
+ /* no trailing null to account for in value len */
+ /* go on to next EA */
+ temp_fea = (struct fea *)temp_ptr;
+ }
+ }
+ }
+ }
+ if (pSMB)
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto QEARetry;
+
+ return (ssize_t)rc;
+}
+
+int
+CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName,
+ const char * ea_name, const void * ea_value,
+ const __u16 ea_value_len, const struct nls_table *nls_codepage)
+{
+ struct smb_com_transaction2_spi_req *pSMB = NULL;
+ struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
+ struct fealist *parm_data;
+ int name_len;
+ int rc = 0;
+ int bytes_returned = 0;
+ __u16 params, param_offset, byte_count, offset, count;
+
+ cFYI(1, ("In SetEA"));
+SetEARetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
+ name_len =
+ cifs_strtoUCS((wchar_t *) pSMB->FileName, fileName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
+ name_len++; /* trailing null */
+ name_len *= 2;
+ } else { /* BB improve the check for buffer overruns BB */
+ name_len = strnlen(fileName, PATH_MAX);
+ name_len++; /* trailing null */
+ strncpy(pSMB->FileName, fileName, name_len);
+ }
+
+ params = 6 + name_len;
+
+ /* done calculating parms using name_len of file name,
+ now use name_len to calculate length of ea name
+ we are going to create in the inode xattrs */
+ if(ea_name == NULL)
+ name_len = 0;
+ else
+ name_len = strnlen(ea_name,255);
+
+ count = sizeof(*parm_data) + ea_value_len + name_len + 1;
+ pSMB->MaxParameterCount = cpu_to_le16(2);
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
+ pSMB->MaxSetupCount = 0;
+ pSMB->Reserved = 0;
+ pSMB->Flags = 0;
+ pSMB->Timeout = 0;
+ pSMB->Reserved2 = 0;
+ param_offset = offsetof(struct smb_com_transaction2_spi_req,
+ InformationLevel) - 4;
+ offset = param_offset + params;
+ pSMB->InformationLevel =
+ cpu_to_le16(SMB_SET_FILE_EA);
+
+ parm_data =
+ (struct fealist *) (((char *) &pSMB->hdr.Protocol) +
+ offset);
+ pSMB->ParameterOffset = cpu_to_le16(param_offset);
+ pSMB->DataOffset = cpu_to_le16(offset);
+ pSMB->SetupCount = 1;
+ pSMB->Reserved3 = 0;
+ pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
+ byte_count = 3 /* pad */ + params + count;
+ pSMB->DataCount = cpu_to_le16(count);
+ parm_data->list_len = cpu_to_le32(count);
+ parm_data->list[0].EA_flags = 0;
+ /* we checked above that name len is less than 255 */
+ parm_data->list[0].name_len = (__u8)name_len;;
+ /* EA names are always ASCII */
+ if(ea_name)
+ strncpy(parm_data->list[0].name,ea_name,name_len);
+ parm_data->list[0].name[name_len] = 0;
+ parm_data->list[0].value_len = cpu_to_le16(ea_value_len);
+ /* caller ensures that ea_value_len is less than 64K but
+ we need to ensure that it fits within the smb */
+
+ /*BB add length check that it would fit in negotiated SMB buffer size BB */
+ /* if(ea_value_len > buffer_size - 512 (enough for header)) */
+ if(ea_value_len)
+ memcpy(parm_data->list[0].name+name_len+1,ea_value,ea_value_len);
+
+ pSMB->TotalDataCount = pSMB->DataCount;
+ pSMB->ParameterCount = cpu_to_le16(params);
+ pSMB->TotalParameterCount = pSMB->ParameterCount;
+ pSMB->Reserved4 = 0;
+ pSMB->hdr.smb_buf_length += byte_count;
+ pSMB->ByteCount = cpu_to_le16(byte_count);
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("SetPathInfo (EA) returned %d", rc));
+ }
+
+ cifs_buf_release(pSMB);
+
+ if (rc == -EAGAIN)
+ goto SetEARetry;
+
+ return rc;
+}
+
+#endif