update 4.9 to correct sources (eterbug #11619)

sources/4.9/Makefile

 #
 # Makefile for Linux CIFS VFS client 
 #
-obj-$(CONFIG_CIFS) += cifs.o
+obj-$(CONFIG_CIFS) += etercifs.o
 
-cifs-y := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o \
+etercifs-y := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o \
 	  link.o misc.o netmisc.o smbencrypt.o transport.o asn1.o \
 	  cifs_unicode.o nterr.o cifsencrypt.o \
 	  readdir.o ioctl.o sess.o export.o smb1ops.o winucase.o
 
-cifs-$(CONFIG_CIFS_XATTR) += xattr.o
-cifs-$(CONFIG_CIFS_ACL) += cifsacl.o
+etercifs-$(CONFIG_CIFS_XATTR) += xattr.o
+etercifs-$(CONFIG_CIFS_ACL) += cifsacl.o
 
-cifs-$(CONFIG_CIFS_UPCALL) += cifs_spnego.o
+etercifs-$(CONFIG_CIFS_UPCALL) += cifs_spnego.o
 
-cifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
+etercifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
 
-cifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o
+etercifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o
 
-cifs-$(CONFIG_CIFS_SMB2) += smb2ops.o smb2maperror.o smb2transport.o \
+etercifs-$(CONFIG_CIFS_SMB2) += smb2ops.o smb2maperror.o smb2transport.o \
 			    smb2misc.o smb2pdu.o smb2inode.o smb2file.o

sources/4.9/cifsacl.c

@@ -1034,6 +1034,7 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = READ_CONTROL;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = create_options;
 	oparms.disposition = FILE_OPEN;
 	oparms.path = path;
@@ -1103,6 +1104,7 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = access_flags;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = create_options;
 	oparms.disposition = FILE_OPEN;
 	oparms.path = path;

sources/4.9/cifsfs.c

@@ -497,6 +497,9 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
 		seq_puts(s, ",mfsymlinks");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE)
 		seq_puts(s, ",fsc");
+	if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) &&
+	    (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL))
+		seq_puts(s, ",wine");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)
 		seq_puts(s, ",nostrictsync");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)

sources/4.9/cifsglob.h

@@ -1032,6 +1032,7 @@ struct cifs_open_parms {
 	struct cifs_sb_info *cifs_sb;
 	int disposition;
 	int desired_access;
+	int share_access;
 	int create_options;
 	const char *path;
 	struct cifs_fid *fid;
@@ -1081,6 +1082,13 @@ struct cifsFileInfo {
 	struct work_struct oplock_break; /* work for oplock breaks */
 };
 
+#define SHARE_FLAGS_SHIFT 28
+
+static inline int cifs_get_share_flags(unsigned int flags)
+{
+	return (~(flags >> SHARE_FLAGS_SHIFT)) & 7;
+}
+
 struct cifs_io_parms {
 	__u16 netfid;
 #ifdef CONFIG_CIFS_SMB2

sources/4.9/cifspdu.h

@@ -22,6 +22,14 @@
 #ifndef _CIFSPDU_H
 #define _CIFSPDU_H
 
+#ifndef CONFIG_CIFS_XATTR
+#define CONFIG_CIFS_XATTR
+#endif
+
+#ifndef CONFIG_CIFS_POSIX
+#define CONFIG_CIFS_POSIX
+#endif
+
 #include <net/sock.h>
 #include <asm/unaligned.h>
 #include "smbfsctl.h"

sources/4.9/cifssmb.c

@@ -1118,6 +1118,7 @@ psx_create_err:
 	return rc;
 }
 
+#ifdef ETERSOFT_USE_SMB_LEGACY_OPEN
 static __u16 convert_disposition(int disposition)
 {
 	__u16 ofun = 0;
@@ -1161,6 +1162,7 @@ access_flags_to_smbopen_mode(const int access_flags)
 	/* just go for read/write */
 	return SMBOPEN_READWRITE;
 }
+#endif
 
 int
 SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
@@ -1169,6 +1171,10 @@ SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
 	    int *pOplock, FILE_ALL_INFO *pfile_info,
 	    const struct nls_table *nls_codepage, int remap)
 {
+#ifndef ETERSOFT_USE_SMB_LEGACY_OPEN
+	printk("Etersoft: Do not use SMBLegacyOpen!\n");
+	return -EACCES;
+#else
 	int rc = -EACCES;
 	OPENX_REQ *pSMB = NULL;
 	OPENX_RSP *pSMBr = NULL;
@@ -1266,6 +1272,7 @@ OldOpenRetry:
 	if (rc == -EAGAIN)
 		goto OldOpenRetry;
 	return rc;
+#endif
 }
 
 int
@@ -1343,7 +1350,7 @@ openRetry:
 	if (create_options & CREATE_OPTION_READONLY)
 		req->FileAttributes |= cpu_to_le32(ATTR_READONLY);
 
-	req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
+	req->ShareAccess = cpu_to_le32(oparms->share_access);
 	req->CreateDisposition = cpu_to_le32(disposition);
 	req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
 

sources/4.9/connect.c

@@ -81,7 +81,7 @@ enum {
 	Opt_nointr, Opt_intr,
 	Opt_nostrictsync, Opt_strictsync,
 	Opt_serverino, Opt_noserverino,
-	Opt_rwpidforward, Opt_cifsacl, Opt_nocifsacl,
+	Opt_rwpidforward, Opt_wine, Opt_cifsacl, Opt_nocifsacl,
 	Opt_acl, Opt_noacl, Opt_locallease,
 	Opt_sign, Opt_seal, Opt_noac,
 	Opt_fsc, Opt_mfsymlinks,
@@ -159,6 +159,7 @@ static const match_table_t cifs_mount_option_tokens = {
 	{ Opt_serverino, "serverino" },
 	{ Opt_noserverino, "noserverino" },
 	{ Opt_rwpidforward, "rwpidforward" },
+	{ Opt_wine, "wine" },
 	{ Opt_cifsacl, "cifsacl" },
 	{ Opt_nocifsacl, "nocifsacl" },
 	{ Opt_acl, "acl" },
@@ -1424,6 +1425,10 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 		case Opt_rwpidforward:
 			vol->rwpidforward = 1;
 			break;
+		case Opt_wine:
+			vol->strict_io = 1;
+			vol->mand_lock = 1;
+			break;
 		case Opt_cifsacl:
 			vol->cifs_acl = 1;
 			break;

sources/4.9/dir.c

@@ -220,6 +220,7 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
 	FILE_ALL_INFO *buf = NULL;
 	struct inode *newinode = NULL;
 	int disposition;
+	int share_access;
 	struct TCP_Server_Info *server = tcon->ses->server;
 	struct cifs_open_parms oparms;
 
@@ -234,6 +235,7 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
 	}
 
 	if (tcon->unix_ext && cap_unix(tcon->ses) && !tcon->broken_posix_open &&
+	    ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0) &&
 	    (CIFS_UNIX_POSIX_PATH_OPS_CAP &
 			le64_to_cpu(tcon->fsUnixInfo.Capability))) {
 		rc = cifs_posix_open(full_path, &newinode, inode->i_sb, mode,
@@ -318,6 +320,8 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
 	else
 		cifs_dbg(FYI, "Create flag not set in create function\n");
 
+	share_access = cifs_get_share_flags(oflags);
+
 	/*
 	 * BB add processing to set equivalent of mode - e.g. via CreateX with
 	 * ACLs
@@ -347,6 +351,7 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = desired_access;
+	oparms.share_access = share_access;
 	oparms.create_options = create_options;
 	oparms.disposition = disposition;
 	oparms.path = full_path;
@@ -669,7 +674,6 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
 	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
 		goto mknod_out;
 
-
 	cifs_dbg(FYI, "sfu compat create special file\n");
 
 	buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
@@ -686,6 +690,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = GENERIC_WRITE;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = create_options;
 	oparms.disposition = FILE_CREATE;
 	oparms.path = full_path;

sources/4.9/file.c

@@ -178,6 +178,7 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
 {
 	int rc;
 	int desired_access;
+	int share_access;
 	int disposition;
 	int create_options = CREATE_NOT_DIR;
 	FILE_ALL_INFO *buf;
@@ -214,6 +215,7 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
  *********************************************************************/
 
 	disposition = cifs_get_disposition(f_flags);
+	share_access = cifs_get_share_flags(f_flags);
 
 	/* BB pass O_SYNC flag through on file attributes .. BB */
 
@@ -227,6 +229,7 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = desired_access;
+	oparms.share_access = share_access;
 	oparms.create_options = create_options;
 	oparms.disposition = disposition;
 	oparms.path = full_path;
@@ -490,8 +493,9 @@ int cifs_open(struct inode *inode, struct file *file)
 	else
 		oplock = 0;
 
-	if (!tcon->broken_posix_open && tcon->unix_ext &&
-	    cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
+	if (!tcon->broken_posix_open && tcon->unix_ext && cap_unix(tcon->ses)
+	    && ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0) &&
+	    (CIFS_UNIX_POSIX_PATH_OPS_CAP &
 				le64_to_cpu(tcon->fsUnixInfo.Capability))) {
 		/* can not refresh inode info since size could be stale */
 		rc = cifs_posix_open(full_path, &inode, inode->i_sb,
@@ -613,6 +617,7 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
 	struct inode *inode;
 	char *full_path = NULL;
 	int desired_access;
+	int share_access;
 	int disposition = FILE_OPEN;
 	int create_options = CREATE_NOT_DIR;
 	struct cifs_open_parms oparms;
@@ -654,6 +659,7 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
 		oplock = 0;
 
 	if (tcon->unix_ext && cap_unix(tcon->ses) &&
+	    ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0) &&
 	    (CIFS_UNIX_POSIX_PATH_OPS_CAP &
 				le64_to_cpu(tcon->fsUnixInfo.Capability))) {
 		/*
@@ -678,6 +684,7 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
 	}
 
 	desired_access = cifs_convert_flags(cfile->f_flags);
+	share_access = cifs_get_share_flags(cfile->f_flags);
 
 	if (backup_cred(cifs_sb))
 		create_options |= CREATE_OPEN_BACKUP_INTENT;
@@ -688,6 +695,7 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = desired_access;
+	oparms.share_access = share_access;
 	oparms.create_options = create_options;
 	oparms.disposition = disposition;
 	oparms.path = full_path;

sources/4.9/inode.c

@@ -461,6 +461,7 @@ cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = GENERIC_READ;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = CREATE_NOT_DIR;
 	oparms.disposition = FILE_OPEN;
 	oparms.path = path;
@@ -1154,6 +1155,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = CREATE_NOT_DIR;
 	oparms.disposition = FILE_OPEN;
 	oparms.path = full_path;
@@ -1196,7 +1198,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
 				   cifs_sb->local_nls,
 				   cifs_remap(cifs_sb));
 	if (rc != 0) {
-		rc = -EBUSY;
+		rc = -ETXTBSY;
 		goto undo_setattr;
 	}
 
@@ -1215,7 +1217,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
 		if (rc == -ENOENT)
 			rc = 0;
 		else if (rc != 0) {
-			rc = -EBUSY;
+			rc = -ETXTBSY;
 			goto undo_rename;
 		}
 		set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags);
@@ -1321,13 +1323,15 @@ psx_del_no_retry:
 			cifs_drop_nlink(inode);
 	} else if (rc == -ENOENT) {
 		d_drop(dentry);
-	} else if (rc == -EBUSY) {
+	} else if (rc == -ETXTBSY) {
 		if (server->ops->rename_pending_delete) {
 			rc = server->ops->rename_pending_delete(full_path,
 								dentry, xid);
 			if (rc == 0)
 				cifs_drop_nlink(inode);
 		}
+		if (rc == -ETXTBSY)
+			rc = -EBUSY;
 	} else if ((rc == -EACCES) && (dosattr == 0) && inode) {
 		attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
 		if (attrs == NULL) {
@@ -1669,7 +1673,7 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
 	 * source. Note that cross directory moves do not work with
 	 * rename by filehandle to various Windows servers.
 	 */
-	if (rc == 0 || rc != -EBUSY)
+	if (rc == 0 || rc != -ETXTBSY)
 		goto do_rename_exit;
 
 	/* open-file renames don't work across directories */
@@ -1680,6 +1684,7 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
 	oparms.cifs_sb = cifs_sb;
 	/* open the file to be renamed -- we need DELETE perms */
 	oparms.desired_access = DELETE;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = CREATE_NOT_DIR;
 	oparms.disposition = FILE_OPEN;
 	oparms.path = from_path;

sources/4.9/link.c

@@ -337,6 +337,7 @@ cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = GENERIC_READ;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = CREATE_NOT_DIR;
 	oparms.disposition = FILE_OPEN;
 	oparms.path = path;
@@ -383,6 +384,7 @@ cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = GENERIC_WRITE;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = create_options;
 	oparms.disposition = FILE_CREATE;
 	oparms.path = path;

sources/4.9/netmisc.c

@@ -62,7 +62,7 @@ static const struct smb_to_posix_error mapping_table_ERRDOS[] = {
 	{ERRdiffdevice, -EXDEV},
 	{ERRnofiles, -ENOENT},
 	{ERRwriteprot, -EROFS},
-	{ERRbadshare, -EBUSY},
+	{ERRbadshare, -ETXTBSY},
 	{ERRlock, -EACCES},
 	{ERRunsup, -EINVAL},
 	{ERRnosuchshare, -ENXIO},

sources/4.9/readdir.c

@@ -246,7 +246,7 @@ int get_symlink_reparse_path(char *full_path, struct cifs_sb_info *cifs_sb,
 	char *tmpbuffer;
 
 	rc = CIFSSMBOpen(xid, ptcon, full_path, FILE_OPEN, GENERIC_READ,
-			OPEN_REPARSE_POINT, &fid, &oplock, NULL,
+			FILE_SHARE_ALL, OPEN_REPARSE_POINT, &fid, &oplock, NULL,
 			cifs_sb->local_nls,
 			cifs_remap(cifs_sb);
 	if (!rc) {

sources/4.9/smb1ops.c

@@ -573,6 +573,7 @@ cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 		oparms.tcon = tcon;
 		oparms.cifs_sb = cifs_sb;
 		oparms.desired_access = FILE_READ_ATTRIBUTES;
+		oparms.share_access = FILE_SHARE_ALL;
 		oparms.create_options = 0;
 		oparms.disposition = FILE_OPEN;
 		oparms.path = full_path;
@@ -805,6 +806,7 @@ smb_set_file_info(struct inode *inode, const char *full_path,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = CREATE_NOT_DIR;
 	oparms.disposition = FILE_OPEN;
 	oparms.path = full_path;
@@ -973,6 +975,7 @@ cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 	oparms.tcon = tcon;
 	oparms.cifs_sb = cifs_sb;
 	oparms.desired_access = FILE_READ_ATTRIBUTES;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.create_options = OPEN_REPARSE_POINT;
 	oparms.disposition = FILE_OPEN;
 	oparms.path = full_path;

sources/4.9/smb2inode.c

@@ -55,6 +55,7 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
 
 	oparms.tcon = tcon;
 	oparms.desired_access = desired_access;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.disposition = create_disposition;
 	oparms.create_options = create_options;
 	oparms.fid = &fid;

sources/4.9/smb2maperror.c

@@ -358,7 +358,7 @@ static const struct status_to_posix_error smb2_error_map_table[] = {
 	{STATUS_PORT_CONNECTION_REFUSED, -ECONNREFUSED,
 	"STATUS_PORT_CONNECTION_REFUSED"},
 	{STATUS_INVALID_PORT_HANDLE, -EIO, "STATUS_INVALID_PORT_HANDLE"},
-	{STATUS_SHARING_VIOLATION, -EBUSY, "STATUS_SHARING_VIOLATION"},
+	{STATUS_SHARING_VIOLATION, -ETXTBSY, "STATUS_SHARING_VIOLATION"},
 	{STATUS_QUOTA_EXCEEDED, -EDQUOT, "STATUS_QUOTA_EXCEEDED"},
 	{STATUS_INVALID_PAGE_PROTECTION, -EIO,
 	"STATUS_INVALID_PAGE_PROTECTION"},

sources/4.9/smb2ops.c

@@ -308,6 +308,7 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
 
 	oparms.tcon = tcon;
 	oparms.desired_access = FILE_READ_ATTRIBUTES;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.disposition = FILE_OPEN;
 	oparms.create_options = 0;
 	oparms.fid = &fid;
@@ -342,6 +343,7 @@ smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
 
 	oparms.tcon = tcon;
 	oparms.desired_access = FILE_READ_ATTRIBUTES;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.disposition = FILE_OPEN;
 	oparms.create_options = 0;
 	oparms.fid = &fid;
@@ -375,6 +377,7 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
 
 	oparms.tcon = tcon;
 	oparms.desired_access = FILE_READ_ATTRIBUTES;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.disposition = FILE_OPEN;
 	oparms.create_options = 0;
 	oparms.fid = &fid;
@@ -955,6 +958,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
 
 	oparms.tcon = tcon;
 	oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.disposition = FILE_OPEN;
 	oparms.create_options = 0;
 	oparms.fid = fid;
@@ -1042,6 +1046,7 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
 
 	oparms.tcon = tcon;
 	oparms.desired_access = FILE_READ_ATTRIBUTES;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.disposition = FILE_OPEN;
 	oparms.create_options = 0;
 	oparms.fid = &fid;
@@ -1121,6 +1126,7 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 
 	oparms.tcon = tcon;
 	oparms.desired_access = FILE_READ_ATTRIBUTES;
+	oparms.share_access = FILE_SHARE_ALL;
 	oparms.disposition = FILE_OPEN;
 	oparms.create_options = 0;
 	oparms.fid = &fid;

sources/4.9/smb2pdu.c

@@ -1500,7 +1500,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
 	req->DesiredAccess = cpu_to_le32(oparms->desired_access);
 	/* File attributes ignored on open (used in create though) */
 	req->FileAttributes = cpu_to_le32(file_attributes);
-	req->ShareAccess = FILE_SHARE_ALL_LE;
+	req->ShareAccess = cpu_to_le32(oparms->share_access);
 	req->CreateDisposition = cpu_to_le32(oparms->disposition);
 	req->CreateOptions = cpu_to_le32(oparms->create_options & CREATE_OPTIONS_MASK);
 	uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2;