[linux-2.6-block.git] / fs / cifs / smb2inode.c

/*
 *   fs/cifs/smb2inode.c
 *
 *   Copyright (C) International Business Machines  Corp., 2002, 2011
 *                 Etersoft, 2012
 *   Author(s): Pavel Shilovsky (pshilovsky@samba.org),
 *              Steve French (sfrench@us.ibm.com)
 *
 *   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
 */
#include <linux/fs.h>
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <asm/div64.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
#include "cifs_unicode.h"
#include "fscache.h"
#include "smb2glob.h"
#include "smb2pdu.h"
#include "smb2proto.h"

static void
free_set_inf_compound(struct smb_rqst *rqst)
{
	if (rqst[1].rq_iov)
		SMB2_set_info_free(&rqst[1]);
	if (rqst[2].rq_iov)
		SMB2_close_free(&rqst[2]);
}


static int
smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
		 struct cifs_sb_info *cifs_sb, const char *full_path,
		 __u32 desired_access, __u32 create_disposition,
		 __u32 create_options, void *ptr, int command)
{
	int rc;
	__le16 *utf16_path = NULL;
	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
	struct cifs_open_parms oparms;
	struct cifs_fid fid;
	struct cifs_ses *ses = tcon->ses;
	int num_rqst = 0;
	struct smb_rqst rqst[3];
	int resp_buftype[3];
	struct kvec rsp_iov[3];
	struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
	struct kvec qi_iov[1];
	struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
	struct kvec close_iov[1];
	struct smb2_query_info_rsp *qi_rsp = NULL;
	int flags = 0;
	__u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
	unsigned int size[2];
	void *data[2];
	struct smb2_file_rename_info rename_info;
	struct smb2_file_link_info link_info;
	int len;

	if (smb3_encryption_required(tcon))
		flags |= CIFS_TRANSFORM_REQ;

	memset(rqst, 0, sizeof(rqst));
	resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
	memset(rsp_iov, 0, sizeof(rsp_iov));

	/* Open */
	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
	if (!utf16_path)
		return -ENOMEM;

	oparms.tcon = tcon;
	oparms.desired_access = desired_access;
	oparms.disposition = create_disposition;
	oparms.create_options = create_options;
	if (backup_cred(cifs_sb))
		oparms.create_options |= CREATE_OPEN_BACKUP_INTENT;
	oparms.fid = &fid;
	oparms.reconnect = false;

	memset(&open_iov, 0, sizeof(open_iov));
	rqst[num_rqst].rq_iov = open_iov;
	rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
	rc = SMB2_open_init(tcon, &rqst[num_rqst], &oplock, &oparms,
			    utf16_path);
	kfree(utf16_path);
	if (rc)
		goto finished;

	smb2_set_next_command(tcon, &rqst[num_rqst++]);

	/* Operation */
	switch (command) {
	case SMB2_OP_QUERY_INFO:
		memset(&qi_iov, 0, sizeof(qi_iov));
		rqst[num_rqst].rq_iov = qi_iov;
		rqst[num_rqst].rq_nvec = 1;

		rc = SMB2_query_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
				COMPOUND_FID, FILE_ALL_INFORMATION,
				SMB2_O_INFO_FILE, 0,
				sizeof(struct smb2_file_all_info) +
					  PATH_MAX * 2, 0, NULL);
		smb2_set_next_command(tcon, &rqst[num_rqst]);
		smb2_set_related(&rqst[num_rqst++]);
		trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
						     full_path);
		break;
	case SMB2_OP_DELETE:
		trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_MKDIR:
		/*
		 * Directories are created through parameters in the
		 * SMB2_open() call.
		 */
		trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_RMDIR:
		memset(&si_iov, 0, sizeof(si_iov));
		rqst[num_rqst].rq_iov = si_iov;
		rqst[num_rqst].rq_nvec = 1;

		size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
		data[0] = &delete_pending[0];

		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
					COMPOUND_FID, current->tgid,
					FILE_DISPOSITION_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
		smb2_set_next_command(tcon, &rqst[num_rqst]);
		smb2_set_related(&rqst[num_rqst++]);
		trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_SET_EOF:
		memset(&si_iov, 0, sizeof(si_iov));
		rqst[num_rqst].rq_iov = si_iov;
		rqst[num_rqst].rq_nvec = 1;

		size[0] = 8; /* sizeof __le64 */
		data[0] = ptr;

		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
					COMPOUND_FID, current->tgid,
					FILE_END_OF_FILE_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
		smb2_set_next_command(tcon, &rqst[num_rqst]);
		smb2_set_related(&rqst[num_rqst++]);
		trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_SET_INFO:
		memset(&si_iov, 0, sizeof(si_iov));
		rqst[num_rqst].rq_iov = si_iov;
		rqst[num_rqst].rq_nvec = 1;


		size[0] = sizeof(FILE_BASIC_INFO);
		data[0] = ptr;

		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
					COMPOUND_FID, current->tgid,
					FILE_BASIC_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
		smb2_set_next_command(tcon, &rqst[num_rqst]);
		smb2_set_related(&rqst[num_rqst++]);
		trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
						   full_path);
		break;
	case SMB2_OP_RENAME:
		memset(&si_iov, 0, sizeof(si_iov));
		rqst[num_rqst].rq_iov = si_iov;
		rqst[num_rqst].rq_nvec = 2;

		len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));

		rename_info.ReplaceIfExists = 1;
		rename_info.RootDirectory = 0;
		rename_info.FileNameLength = cpu_to_le32(len);

		size[0] = sizeof(struct smb2_file_rename_info);
		data[0] = &rename_info;

		size[1] = len + 2 /* null */;
		data[1] = (__le16 *)ptr;

		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
					COMPOUND_FID, current->tgid,
					FILE_RENAME_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
		smb2_set_next_command(tcon, &rqst[num_rqst]);
		smb2_set_related(&rqst[num_rqst++]);
		trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_HARDLINK:
		memset(&si_iov, 0, sizeof(si_iov));
		rqst[num_rqst].rq_iov = si_iov;
		rqst[num_rqst].rq_nvec = 2;

		len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));

		link_info.ReplaceIfExists = 0;
		link_info.RootDirectory = 0;
		link_info.FileNameLength = cpu_to_le32(len);

		size[0] = sizeof(struct smb2_file_link_info);
		data[0] = &link_info;

		size[1] = len + 2 /* null */;
		data[1] = (__le16 *)ptr;

		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
					COMPOUND_FID, current->tgid,
					FILE_LINK_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
		smb2_set_next_command(tcon, &rqst[num_rqst]);
		smb2_set_related(&rqst[num_rqst++]);
		trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	default:
		cifs_dbg(VFS, "Invalid command\n");
		rc = -EINVAL;
	}
	if (rc)
		goto finished;

	/* Close */
	memset(&close_iov, 0, sizeof(close_iov));
	rqst[num_rqst].rq_iov = close_iov;
	rqst[num_rqst].rq_nvec = 1;
	rc = SMB2_close_init(tcon, &rqst[num_rqst], COMPOUND_FID,
			     COMPOUND_FID);
	smb2_set_related(&rqst[num_rqst++]);
	if (rc)
		goto finished;

	rc = compound_send_recv(xid, ses, flags, num_rqst, rqst,
				resp_buftype, rsp_iov);

 finished:
	SMB2_open_free(&rqst[0]);
	switch (command) {
	case SMB2_OP_QUERY_INFO:
		if (rc == 0) {
			qi_rsp = (struct smb2_query_info_rsp *)
				rsp_iov[1].iov_base;
			rc = smb2_validate_and_copy_iov(
				le16_to_cpu(qi_rsp->OutputBufferOffset),
				le32_to_cpu(qi_rsp->OutputBufferLength),
				&rsp_iov[1], sizeof(struct smb2_file_all_info),
				ptr);
		}
		if (rqst[1].rq_iov)
			SMB2_query_info_free(&rqst[1]);
		if (rqst[2].rq_iov)
			SMB2_close_free(&rqst[2]);
		if (rc)
			trace_smb3_query_info_compound_err(xid,  ses->Suid,
						tcon->tid, rc);
		else
			trace_smb3_query_info_compound_done(xid, ses->Suid,
						tcon->tid);
		break;
	case SMB2_OP_DELETE:
		if (rc)
			trace_smb3_delete_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
		if (rqst[1].rq_iov)
			SMB2_close_free(&rqst[1]);
		break;
	case SMB2_OP_MKDIR:
		if (rc)
			trace_smb3_mkdir_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
		if (rqst[1].rq_iov)
			SMB2_close_free(&rqst[1]);
		break;
	case SMB2_OP_HARDLINK:
		if (rc)
			trace_smb3_hardlink_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
		free_set_inf_compound(rqst);
		break;
	case SMB2_OP_RENAME:
		if (rc)
			trace_smb3_rename_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
		free_set_inf_compound(rqst);
		break;
	case SMB2_OP_RMDIR:
		if (rc)
			trace_smb3_rmdir_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
		free_set_inf_compound(rqst);
		break;
	case SMB2_OP_SET_EOF:
		if (rc)
			trace_smb3_set_eof_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
		free_set_inf_compound(rqst);
		break;
	case SMB2_OP_SET_INFO:
		if (rc)
			trace_smb3_set_info_compound_err(xid,  ses->Suid,
						tcon->tid, rc);
		else
			trace_smb3_set_info_compound_done(xid, ses->Suid,
						tcon->tid);
		free_set_inf_compound(rqst);
		break;
	}
	free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
	free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
	free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
	return rc;
}

void
move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
{
	memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
	dst->CurrentByteOffset = src->CurrentByteOffset;
	dst->Mode = src->Mode;
	dst->AlignmentRequirement = src->AlignmentRequirement;
	dst->IndexNumber1 = 0; /* we don't use it */
}

int
smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
		     struct cifs_sb_info *cifs_sb, const char *full_path,
		     FILE_ALL_INFO *data, bool *adjust_tz, bool *symlink)
{
	int rc;
	struct smb2_file_all_info *smb2_data;
	__u32 create_options = 0;
	struct cifs_fid fid;
	bool no_cached_open = tcon->nohandlecache;

	*adjust_tz = false;
	*symlink = false;

	smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
			    GFP_KERNEL);
	if (smb2_data == NULL)
		return -ENOMEM;

	/* If it is a root and its handle is cached then use it */
	if (!strlen(full_path) && !no_cached_open) {
		rc = open_shroot(xid, tcon, &fid);
		if (rc)
			goto out;

		if (tcon->crfid.file_all_info_is_valid) {
			move_smb2_info_to_cifs(data,
					       &tcon->crfid.file_all_info);
		} else {
			rc = SMB2_query_info(xid, tcon, fid.persistent_fid,
					     fid.volatile_fid, smb2_data);
			if (!rc)
				move_smb2_info_to_cifs(data, smb2_data);
		}
		close_shroot(&tcon->crfid);
		goto out;
	}

	if (backup_cred(cifs_sb))
		create_options |= CREATE_OPEN_BACKUP_INTENT;

	rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
			      FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
			      smb2_data, SMB2_OP_QUERY_INFO);
	if (rc == -EOPNOTSUPP) {
		*symlink = true;
		create_options |= OPEN_REPARSE_POINT;

		/* Failed on a symbolic link - query a reparse point info */
		rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
				      FILE_READ_ATTRIBUTES, FILE_OPEN,
				      create_options, smb2_data,
				      SMB2_OP_QUERY_INFO);
	}
	if (rc)
		goto out;

	move_smb2_info_to_cifs(data, smb2_data);
out:
	kfree(smb2_data);
	return rc;
}

int
smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
	   struct cifs_sb_info *cifs_sb)
{
	return smb2_compound_op(xid, tcon, cifs_sb, name,
				FILE_WRITE_ATTRIBUTES, FILE_CREATE,
				CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR);
}

void
smb2_mkdir_setinfo(struct inode *inode, const char *name,
		   struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
		   const unsigned int xid)
{
	FILE_BASIC_INFO data;
	struct cifsInodeInfo *cifs_i;
	u32 dosattrs;
	int tmprc;

	memset(&data, 0, sizeof(data));
	cifs_i = CIFS_I(inode);
	dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
	data.Attributes = cpu_to_le32(dosattrs);
	tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
				 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
				 CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO);
	if (tmprc == 0)
		cifs_i->cifsAttrs = dosattrs;
}

int
smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
	   struct cifs_sb_info *cifs_sb)
{
	return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
				CREATE_NOT_FILE,
				NULL, SMB2_OP_RMDIR);
}

int
smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
	    struct cifs_sb_info *cifs_sb)
{
	return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
				CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
				NULL, SMB2_OP_DELETE);
}

static int
smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
		   const char *from_name, const char *to_name,
		   struct cifs_sb_info *cifs_sb, __u32 access, int command)
{
	__le16 *smb2_to_name = NULL;
	int rc;

	smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
	if (smb2_to_name == NULL) {
		rc = -ENOMEM;
		goto smb2_rename_path;
	}
	rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
			      FILE_OPEN, 0, smb2_to_name, command);
smb2_rename_path:
	kfree(smb2_to_name);
	return rc;
}

int
smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
		 const char *from_name, const char *to_name,
		 struct cifs_sb_info *cifs_sb)
{
	return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
				  DELETE, SMB2_OP_RENAME);
}

int
smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
		     const char *from_name, const char *to_name,
		     struct cifs_sb_info *cifs_sb)
{
	return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
				  FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK);
}

int
smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
		   const char *full_path, __u64 size,
		   struct cifs_sb_info *cifs_sb, bool set_alloc)
{
	__le64 eof = cpu_to_le64(size);

	return smb2_compound_op(xid, tcon, cifs_sb, full_path,
				FILE_WRITE_DATA, FILE_OPEN, 0, &eof,
				SMB2_OP_SET_EOF);
}

int
smb2_set_file_info(struct inode *inode, const char *full_path,
		   FILE_BASIC_INFO *buf, const unsigned int xid)
{
	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
	struct tcon_link *tlink;
	int rc;

	if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
	    (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
	    (buf->Attributes == 0))
		return 0; /* would be a no op, no sense sending this */

	tlink = cifs_sb_tlink(cifs_sb);
	if (IS_ERR(tlink))
		return PTR_ERR(tlink);

	rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
			      FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, buf,
			      SMB2_OP_SET_INFO);
	cifs_put_tlink(tlink);
	return rc;
}
Commit	Line	Data
be4cb9e3 PS	1	/*
	2	* fs/cifs/smb2inode.c
	3	*
	4	* Copyright (C) International Business Machines Corp., 2002, 2011
	5	* Etersoft, 2012
	6	* Author(s): Pavel Shilovsky (pshilovsky@samba.org),
	7	* Steve French (sfrench@us.ibm.com)
	8	*
	9	* This library is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU Lesser General Public License as published
	11	* by the Free Software Foundation; either version 2.1 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This library is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	17	* the GNU Lesser General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU Lesser General Public License
	20	* along with this library; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*/
	23	#include <linux/fs.h>
	24	#include <linux/stat.h>
	25	#include <linux/slab.h>
	26	#include <linux/pagemap.h>
	27	#include <asm/div64.h>
	28	#include "cifsfs.h"
	29	#include "cifspdu.h"
	30	#include "cifsglob.h"
	31	#include "cifsproto.h"
	32	#include "cifs_debug.h"
	33	#include "cifs_fs_sb.h"
	34	#include "cifs_unicode.h"
	35	#include "fscache.h"
	36	#include "smb2glob.h"
	37	#include "smb2pdu.h"
	38	#include "smb2proto.h"
	39
8191576a SF	40	static void
	41	free_set_inf_compound(struct smb_rqst *rqst)
	42	{
	43	if (rqst[1].rq_iov)
	44	SMB2_set_info_free(&rqst[1]);
	45	if (rqst[2].rq_iov)
	46	SMB2_close_free(&rqst[2]);
	47	}
	48
	49
c5a5f38f RS	50	static int
	51	smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
	52	struct cifs_sb_info cifs_sb, const char full_path,
	53	__u32 desired_access, __u32 create_disposition,
c2e0fe3f	54	__u32 create_options, void *ptr, int command)
c5a5f38f RS	55	{
	56	int rc;
	57	__le16 *utf16_path = NULL;
	58	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
	59	struct cifs_open_parms oparms;
	60	struct cifs_fid fid;
	61	struct cifs_ses *ses = tcon->ses;
c5a5f38f RS	62	int num_rqst = 0;
	63	struct smb_rqst rqst[3];
	64	int resp_buftype[3];
	65	struct kvec rsp_iov[3];
	66	struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
	67	struct kvec qi_iov[1];
14e562ad	68	struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
c5a5f38f	69	struct kvec close_iov[1];
c2e0fe3f	70	struct smb2_query_info_rsp *qi_rsp = NULL;
c5a5f38f	71	int flags = 0;
c2e0fe3f	72	__u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
bb435512 RS	73	unsigned int size[2];
	74	void *data[2];
	75	struct smb2_file_rename_info rename_info;
	76	struct smb2_file_link_info link_info;
	77	int len;
c5a5f38f RS	78
	79	if (smb3_encryption_required(tcon))
	80	flags \|= CIFS_TRANSFORM_REQ;
	81
	82	memset(rqst, 0, sizeof(rqst));
	83	resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
	84	memset(rsp_iov, 0, sizeof(rsp_iov));
	85
	86	/* Open */
	87	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
	88	if (!utf16_path)
	89	return -ENOMEM;
	90
	91	oparms.tcon = tcon;
	92	oparms.desired_access = desired_access;
	93	oparms.disposition = create_disposition;
	94	oparms.create_options = create_options;
4d5bdf28 SF	95	if (backup_cred(cifs_sb))
4d5bdf28 SF	96	oparms.create_options \|= CREATE_OPEN_BACKUP_INTENT;
c5a5f38f RS	97	oparms.fid = &fid;
	98	oparms.reconnect = false;
	99
	100	memset(&open_iov, 0, sizeof(open_iov));
	101	rqst[num_rqst].rq_iov = open_iov;
	102	rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
	103	rc = SMB2_open_init(tcon, &rqst[num_rqst], &oplock, &oparms,
	104	utf16_path);
	105	kfree(utf16_path);
	106	if (rc)
	107	goto finished;
	108
e77fe73c	109	smb2_set_next_command(tcon, &rqst[num_rqst++]);
c5a5f38f RS	110
	111	/* Operation */
	112	switch (command) {
	113	case SMB2_OP_QUERY_INFO:
	114	memset(&qi_iov, 0, sizeof(qi_iov));
	115	rqst[num_rqst].rq_iov = qi_iov;
	116	rqst[num_rqst].rq_nvec = 1;
	117
	118	rc = SMB2_query_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
	119	COMPOUND_FID, FILE_ALL_INFORMATION,
	120	SMB2_O_INFO_FILE, 0,
	121	sizeof(struct smb2_file_all_info) +
f5b05d62	122	PATH_MAX * 2, 0, NULL);
e77fe73c	123	smb2_set_next_command(tcon, &rqst[num_rqst]);
c5a5f38f	124	smb2_set_related(&rqst[num_rqst++]);
8191576a SF	125	trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
8191576a SF	126	full_path);
c5a5f38f	127	break;
47dd9597	128	case SMB2_OP_DELETE:
8191576a	129	trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
47dd9597	130	break;
f733e393 RS	131	case SMB2_OP_MKDIR:
	132	/*
	133	* Directories are created through parameters in the
	134	* SMB2_open() call.
	135	*/
8191576a	136	trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
f733e393	137	break;
c2e0fe3f RS	138	case SMB2_OP_RMDIR:
	139	memset(&si_iov, 0, sizeof(si_iov));
	140	rqst[num_rqst].rq_iov = si_iov;
	141	rqst[num_rqst].rq_nvec = 1;
	142
271b9c0c	143	size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
c2e0fe3f RS	144	data[0] = &delete_pending[0];
	145
	146	rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
	147	COMPOUND_FID, current->tgid,
	148	FILE_DISPOSITION_INFORMATION,
	149	SMB2_O_INFO_FILE, 0, data, size);
e77fe73c	150	smb2_set_next_command(tcon, &rqst[num_rqst]);
c2e0fe3f	151	smb2_set_related(&rqst[num_rqst++]);
8191576a	152	trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
c2e0fe3f	153	break;
f7bfe04b RS	154	case SMB2_OP_SET_EOF:
	155	memset(&si_iov, 0, sizeof(si_iov));
	156	rqst[num_rqst].rq_iov = si_iov;
	157	rqst[num_rqst].rq_nvec = 1;
	158
	159	size[0] = 8; /* sizeof __le64 */
	160	data[0] = ptr;
	161
	162	rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
	163	COMPOUND_FID, current->tgid,
	164	FILE_END_OF_FILE_INFORMATION,
	165	SMB2_O_INFO_FILE, 0, data, size);
e77fe73c	166	smb2_set_next_command(tcon, &rqst[num_rqst]);
f7bfe04b	167	smb2_set_related(&rqst[num_rqst++]);
8191576a	168	trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
f7bfe04b	169	break;
dcbf9103 RS	170	case SMB2_OP_SET_INFO:
	171	memset(&si_iov, 0, sizeof(si_iov));
	172	rqst[num_rqst].rq_iov = si_iov;
	173	rqst[num_rqst].rq_nvec = 1;
	174
bb435512	175
dcbf9103 RS	176	size[0] = sizeof(FILE_BASIC_INFO);
	177	data[0] = ptr;
	178
	179	rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
	180	COMPOUND_FID, current->tgid,
	181	FILE_BASIC_INFORMATION,
	182	SMB2_O_INFO_FILE, 0, data, size);
e77fe73c	183	smb2_set_next_command(tcon, &rqst[num_rqst]);
dcbf9103	184	smb2_set_related(&rqst[num_rqst++]);
8191576a SF	185	trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
8191576a SF	186	full_path);
dcbf9103	187	break;
bb435512 RS	188	case SMB2_OP_RENAME:
	189	memset(&si_iov, 0, sizeof(si_iov));
	190	rqst[num_rqst].rq_iov = si_iov;
	191	rqst[num_rqst].rq_nvec = 2;
	192
	193	len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
	194
	195	rename_info.ReplaceIfExists = 1;
	196	rename_info.RootDirectory = 0;
	197	rename_info.FileNameLength = cpu_to_le32(len);
	198
	199	size[0] = sizeof(struct smb2_file_rename_info);
	200	data[0] = &rename_info;
	201
	202	size[1] = len + 2 /* null */;
	203	data[1] = (__le16 *)ptr;
	204
	205	rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
	206	COMPOUND_FID, current->tgid,
	207	FILE_RENAME_INFORMATION,
	208	SMB2_O_INFO_FILE, 0, data, size);
e77fe73c	209	smb2_set_next_command(tcon, &rqst[num_rqst]);
bb435512	210	smb2_set_related(&rqst[num_rqst++]);
8191576a	211	trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
bb435512 RS	212	break;
	213	case SMB2_OP_HARDLINK:
	214	memset(&si_iov, 0, sizeof(si_iov));
	215	rqst[num_rqst].rq_iov = si_iov;
	216	rqst[num_rqst].rq_nvec = 2;
	217
	218	len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
	219
	220	link_info.ReplaceIfExists = 0;
	221	link_info.RootDirectory = 0;
	222	link_info.FileNameLength = cpu_to_le32(len);
	223
	224	size[0] = sizeof(struct smb2_file_link_info);
	225	data[0] = &link_info;
	226
	227	size[1] = len + 2 /* null */;
	228	data[1] = (__le16 *)ptr;
	229
	230	rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
	231	COMPOUND_FID, current->tgid,
	232	FILE_LINK_INFORMATION,
	233	SMB2_O_INFO_FILE, 0, data, size);
e77fe73c	234	smb2_set_next_command(tcon, &rqst[num_rqst]);
bb435512	235	smb2_set_related(&rqst[num_rqst++]);
8191576a	236	trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
bb435512	237	break;
c5a5f38f RS	238	default:
	239	cifs_dbg(VFS, "Invalid command\n");
	240	rc = -EINVAL;
	241	}
	242	if (rc)
	243	goto finished;
	244
	245	/* Close */
	246	memset(&close_iov, 0, sizeof(close_iov));
	247	rqst[num_rqst].rq_iov = close_iov;
	248	rqst[num_rqst].rq_nvec = 1;
	249	rc = SMB2_close_init(tcon, &rqst[num_rqst], COMPOUND_FID,
	250	COMPOUND_FID);
	251	smb2_set_related(&rqst[num_rqst++]);
	252	if (rc)
	253	goto finished;
	254
	255	rc = compound_send_recv(xid, ses, flags, num_rqst, rqst,
	256	resp_buftype, rsp_iov);
	257
	258	finished:
	259	SMB2_open_free(&rqst[0]);
	260	switch (command) {
	261	case SMB2_OP_QUERY_INFO:
	262	if (rc == 0) {
c2e0fe3f RS	263	qi_rsp = (struct smb2_query_info_rsp *)
c2e0fe3f RS	264	rsp_iov[1].iov_base;
c5a5f38f	265	rc = smb2_validate_and_copy_iov(
c2e0fe3f RS	266	le16_to_cpu(qi_rsp->OutputBufferOffset),
c2e0fe3f RS	267	le32_to_cpu(qi_rsp->OutputBufferLength),
c5a5f38f	268	&rsp_iov[1], sizeof(struct smb2_file_all_info),
c2e0fe3f	269	ptr);
c5a5f38f RS	270	}
	271	if (rqst[1].rq_iov)
	272	SMB2_query_info_free(&rqst[1]);
	273	if (rqst[2].rq_iov)
	274	SMB2_close_free(&rqst[2]);
8191576a SF	275	if (rc)
	276	trace_smb3_query_info_compound_err(xid, ses->Suid,
	277	tcon->tid, rc);
	278	else
	279	trace_smb3_query_info_compound_done(xid, ses->Suid,
	280	tcon->tid);
c5a5f38f	281	break;
47dd9597	282	case SMB2_OP_DELETE:
8191576a SF	283	if (rc)
	284	trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
	285	else
	286	trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
	287	if (rqst[1].rq_iov)
	288	SMB2_close_free(&rqst[1]);
	289	break;
f733e393	290	case SMB2_OP_MKDIR:
8191576a SF	291	if (rc)
	292	trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
	293	else
	294	trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
f733e393 RS	295	if (rqst[1].rq_iov)
	296	SMB2_close_free(&rqst[1]);
	297	break;
bb435512	298	case SMB2_OP_HARDLINK:
8191576a SF	299	if (rc)
	300	trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
	301	else
	302	trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
	303	free_set_inf_compound(rqst);
	304	break;
bb435512	305	case SMB2_OP_RENAME:
8191576a SF	306	if (rc)
	307	trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
	308	else
	309	trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
	310	free_set_inf_compound(rqst);
	311	break;
c2e0fe3f	312	case SMB2_OP_RMDIR:
8191576a SF	313	if (rc)
	314	trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
	315	else
	316	trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
	317	free_set_inf_compound(rqst);
	318	break;
dcbf9103	319	case SMB2_OP_SET_EOF:
8191576a SF	320	if (rc)
	321	trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
	322	else
	323	trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
	324	free_set_inf_compound(rqst);
	325	break;
dcbf9103	326	case SMB2_OP_SET_INFO:
8191576a SF	327	if (rc)
	328	trace_smb3_set_info_compound_err(xid, ses->Suid,
	329	tcon->tid, rc);
	330	else
	331	trace_smb3_set_info_compound_done(xid, ses->Suid,
	332	tcon->tid);
	333	free_set_inf_compound(rqst);
c2e0fe3f	334	break;
c5a5f38f RS	335	}
	336	free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
	337	free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
	338	free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
	339	return rc;
	340	}
	341
f0df737e	342	void
be4cb9e3 PS	343	move_smb2_info_to_cifs(FILE_ALL_INFO dst, struct smb2_file_all_info src)
	344	{
	345	memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
	346	dst->CurrentByteOffset = src->CurrentByteOffset;
	347	dst->Mode = src->Mode;
	348	dst->AlignmentRequirement = src->AlignmentRequirement;
	349	dst->IndexNumber1 = 0; /* we don't use it */
	350	}
	351
	352	int
	353	smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
	354	struct cifs_sb_info cifs_sb, const char full_path,
eb85d94b	355	FILE_ALL_INFO data, bool adjust_tz, bool *symlink)
be4cb9e3 PS	356	{
	357	int rc;
	358	struct smb2_file_all_info *smb2_data;
61351d6d	359	__u32 create_options = 0;
6a9cbdd1 PS	360	struct cifs_fid fid;
6a9cbdd1 PS	361	bool no_cached_open = tcon->nohandlecache;
be4cb9e3 PS	362
be4cb9e3 PS	363	*adjust_tz = false;
eb85d94b	364	*symlink = false;
be4cb9e3	365
1bbe4997	366	smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
be4cb9e3 PS	367	GFP_KERNEL);
	368	if (smb2_data == NULL)
	369	return -ENOMEM;
6a9cbdd1 PS	370
	371	/* If it is a root and its handle is cached then use it */
	372	if (!strlen(full_path) && !no_cached_open) {
	373	rc = open_shroot(xid, tcon, &fid);
	374	if (rc)
	375	goto out;
b0f6df73 RS	376
	377	if (tcon->crfid.file_all_info_is_valid) {
	378	move_smb2_info_to_cifs(data,
	379	&tcon->crfid.file_all_info);
	380	} else {
	381	rc = SMB2_query_info(xid, tcon, fid.persistent_fid,
	382	fid.volatile_fid, smb2_data);
	383	if (!rc)
	384	move_smb2_info_to_cifs(data, smb2_data);
	385	}
6a9cbdd1	386	close_shroot(&tcon->crfid);
6a9cbdd1 PS	387	goto out;
	388	}
	389
61351d6d SF	390	if (backup_cred(cifs_sb))
61351d6d SF	391	create_options \|= CREATE_OPEN_BACKUP_INTENT;
be4cb9e3	392
c5a5f38f	393	rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
61351d6d	394	FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
c5a5f38f	395	smb2_data, SMB2_OP_QUERY_INFO);
eb85d94b PS	396	if (rc == -EOPNOTSUPP) {
eb85d94b PS	397	*symlink = true;
61351d6d SF	398	create_options \|= OPEN_REPARSE_POINT;
61351d6d SF	399
eb85d94b	400	/* Failed on a symbolic link - query a reparse point info */
c5a5f38f RS	401	rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
c5a5f38f RS	402	FILE_READ_ATTRIBUTES, FILE_OPEN,
61351d6d	403	create_options, smb2_data,
c5a5f38f	404	SMB2_OP_QUERY_INFO);
eb85d94b	405	}
be4cb9e3 PS	406	if (rc)
	407	goto out;
	408
	409	move_smb2_info_to_cifs(data, smb2_data);
	410	out:
	411	kfree(smb2_data);
	412	return rc;
	413	}
a0e73183 PS	414
	415	int
	416	smb2_mkdir(const unsigned int xid, struct cifs_tcon tcon, const char name,
	417	struct cifs_sb_info *cifs_sb)
	418	{
f733e393 RS	419	return smb2_compound_op(xid, tcon, cifs_sb, name,
	420	FILE_WRITE_ATTRIBUTES, FILE_CREATE,
	421	CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR);
a0e73183 PS	422	}
	423
	424	void
	425	smb2_mkdir_setinfo(struct inode inode, const char name,
	426	struct cifs_sb_info cifs_sb, struct cifs_tcon tcon,
	427	const unsigned int xid)
	428	{
	429	FILE_BASIC_INFO data;
	430	struct cifsInodeInfo *cifs_i;
	431	u32 dosattrs;
	432	int tmprc;
	433
	434	memset(&data, 0, sizeof(data));
	435	cifs_i = CIFS_I(inode);
	436	dosattrs = cifs_i->cifsAttrs \| ATTR_READONLY;
	437	data.Attributes = cpu_to_le32(dosattrs);
dcbf9103 RS	438	tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
	439	FILE_WRITE_ATTRIBUTES, FILE_CREATE,
	440	CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO);
a0e73183 PS	441	if (tmprc == 0)
	442	cifs_i->cifsAttrs = dosattrs;
	443	}
1a500f01 PS	444
	445	int
	446	smb2_rmdir(const unsigned int xid, struct cifs_tcon tcon, const char name,
	447	struct cifs_sb_info *cifs_sb)
	448	{
c2e0fe3f RS	449	return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
	450	CREATE_NOT_FILE,
	451	NULL, SMB2_OP_RMDIR);
1a500f01	452	}
cbe6f439 PS	453
	454	int
	455	smb2_unlink(const unsigned int xid, struct cifs_tcon tcon, const char name,
	456	struct cifs_sb_info *cifs_sb)
	457	{
47dd9597 RS	458	return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
	459	CREATE_DELETE_ON_CLOSE \| OPEN_REPARSE_POINT,
	460	NULL, SMB2_OP_DELETE);
cbe6f439	461	}
35143eb5	462
568798cc PS	463	static int
	464	smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
	465	const char from_name, const char to_name,
	466	struct cifs_sb_info *cifs_sb, __u32 access, int command)
35143eb5 PS	467	{
	468	__le16 *smb2_to_name = NULL;
	469	int rc;
	470
	471	smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
	472	if (smb2_to_name == NULL) {
	473	rc = -ENOMEM;
	474	goto smb2_rename_path;
	475	}
bb435512 RS	476	rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
bb435512 RS	477	FILE_OPEN, 0, smb2_to_name, command);
35143eb5 PS	478	smb2_rename_path:
	479	kfree(smb2_to_name);
	480	return rc;
	481	}
568798cc PS	482
	483	int
	484	smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
	485	const char from_name, const char to_name,
	486	struct cifs_sb_info *cifs_sb)
	487	{
	488	return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
	489	DELETE, SMB2_OP_RENAME);
	490	}
	491
	492	int
	493	smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
	494	const char from_name, const char to_name,
	495	struct cifs_sb_info *cifs_sb)
	496	{
	497	return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
	498	FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK);
	499	}
c839ff24 PS	500
	501	int
	502	smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
	503	const char *full_path, __u64 size,
	504	struct cifs_sb_info *cifs_sb, bool set_alloc)
	505	{
	506	__le64 eof = cpu_to_le64(size);
f7bfe04b RS	507
	508	return smb2_compound_op(xid, tcon, cifs_sb, full_path,
	509	FILE_WRITE_DATA, FILE_OPEN, 0, &eof,
	510	SMB2_OP_SET_EOF);
c839ff24	511	}
1feeaac7 PS	512
	513	int
	514	smb2_set_file_info(struct inode inode, const char full_path,
	515	FILE_BASIC_INFO *buf, const unsigned int xid)
	516	{
	517	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
	518	struct tcon_link *tlink;
	519	int rc;
	520
18dd8e1a	521	if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
fd09b7d3	522	(buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
18dd8e1a SF	523	(buf->Attributes == 0))
	524	return 0; /* would be a no op, no sense sending this */
	525
1feeaac7 PS	526	tlink = cifs_sb_tlink(cifs_sb);
	527	if (IS_ERR(tlink))
	528	return PTR_ERR(tlink);
18dd8e1a	529
dcbf9103 RS	530	rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
	531	FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, buf,
	532	SMB2_OP_SET_INFO);
1feeaac7 PS	533	cifs_put_tlink(tlink);
	534	return rc;
	535	}