[PATCH v3 3/7] CIFS: Add O_DENY* open flags support

From: Pavel Shilovsky
Date: Thu Feb 28 2013 - 10:23:38 EST

Make CIFSSMBOpen take share_flags as a parm that allows us
to pass new O_DENY* flags to the server.

Signed-off-by: Pavel Shilovsky <piastry@xxxxxxxxxxx>
---
fs/cifs/cifsacl.c | 6 ++++--
fs/cifs/cifsglob.h | 12 +++++++++++-
fs/cifs/cifsproto.h | 9 +++++----
fs/cifs/cifssmb.c | 47 +++++++++++++++++++++++++----------------------
fs/cifs/dir.c | 13 ++++++++-----
fs/cifs/file.c | 12 ++++++++----
fs/cifs/inode.c | 11 ++++++-----
fs/cifs/link.c | 10 +++++-----
fs/cifs/readdir.c | 2 +-
fs/cifs/smb1ops.c | 15 ++++++++-------
fs/cifs/smb2file.c | 10 +++++-----
fs/cifs/smb2inode.c | 4 ++--
fs/cifs/smb2ops.c | 10 ++++++----
fs/cifs/smb2pdu.c | 6 +++---
fs/cifs/smb2proto.h | 14 ++++++++------
15 files changed, 105 insertions(+), 76 deletions(-)

diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 5cbd00e..222b989 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -891,7 +891,8 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
create_options |= CREATE_OPEN_BACKUP_INTENT;

rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, READ_CONTROL,
- create_options, &fid, &oplock, NULL, cifs_sb->local_nls,
+ FILE_SHARE_ALL, create_options, &fid, &oplock,
+ NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (!rc) {
rc = CIFSSMBGetCIFSACL(xid, tcon, fid, &pntsd, pacllen);
@@ -952,7 +953,8 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
access_flags = WRITE_DAC;

rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, access_flags,
- create_options, &fid, &oplock, NULL, cifs_sb->local_nls,
+ FILE_SHARE_ALL, create_options, &fid, &oplock,
+ NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc) {
cERROR(1, "Unable to open file to set ACL");
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index e6899ce..f1d62ed 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -310,7 +310,7 @@ struct smb_version_operations {
struct cifs_sb_info *);
/* open a file for non-posix mounts */
int (*open)(const unsigned int, struct cifs_tcon *, const char *, int,
- int, int, struct cifs_fid *, __u32 *, FILE_ALL_INFO *,
+ int, int, int, struct cifs_fid *, __u32 *, FILE_ALL_INFO *,
struct cifs_sb_info *);
/* set fid protocol-specific info */
void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32);
@@ -947,6 +947,16 @@ struct cifsFileInfo {
struct work_struct oplock_break; /* work for oplock breaks */
};

+#define CIFS_DENY_RW_FLAGS_SHIFT 22
+#define CIFS_DENY_DEL_FLAG_SHIFT 23
+
+static inline int cifs_get_share_flags(unsigned int flags)
+{
+ return (flags & O_DENYMAND) ?
+ (((~(flags >> CIFS_DENY_RW_FLAGS_SHIFT)) & 3) |
+ ((~(flags >> CIFS_DENY_DEL_FLAG_SHIFT)) & 4)) : FILE_SHARE_ALL;
+}
+
struct cifs_io_parms {
__u16 netfid;
#ifdef CONFIG_CIFS_SMB2
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 1988c1b..9661607 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -361,10 +361,11 @@ extern int CIFSSMBQueryReparseLinkInfo(const unsigned int xid,
const struct nls_table *nls_codepage);
#endif /* temporarily unused until cifs_symlink fixed */
extern int CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, const int disposition,
- const int access_flags, const int omode,
- __u16 *netfid, int *pOplock, FILE_ALL_INFO *,
- const struct nls_table *nls_codepage, int remap);
+ const char *file_name, const int disposition,
+ const int access_flags, const int share_flags,
+ const int omode, __u16 *netfid, int *oplock,
+ FILE_ALL_INFO *, const struct nls_table *nls_codepage,
+ int remap);
extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
const char *fileName, const int disposition,
const int access_flags, const int omode,
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 76d0d29..9c4632f 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1289,10 +1289,11 @@ OldOpenRetry:

int
CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon,
- const char *fileName, const int openDisposition,
- const int access_flags, const int create_options, __u16 *netfid,
- int *pOplock, FILE_ALL_INFO *pfile_info,
- const struct nls_table *nls_codepage, int remap)
+ const char *file_name, const int disposition,
+ const int access_flags, const int share_flags,
+ const int create_options, __u16 *netfid, int *oplock,
+ FILE_ALL_INFO *file_info, const struct nls_table *nls_codepage,
+ int remap)
{
int rc = -EACCES;
OPEN_REQ *pSMB = NULL;
@@ -1313,26 +1314,28 @@ openRetry:
count = 1; /* account for one byte pad to word boundary */
name_len =
cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
- fileName, PATH_MAX, nls_codepage, remap);
+ file_name, PATH_MAX, nls_codepage,
+ remap);
name_len++; /* trailing null */
name_len *= 2;
pSMB->NameLength = cpu_to_le16(name_len);
} else { /* BB improve check for buffer overruns BB */
count = 0; /* no pad */
- name_len = strnlen(fileName, PATH_MAX);
+ name_len = strnlen(file_name, PATH_MAX);
name_len++; /* trailing null */
pSMB->NameLength = cpu_to_le16(name_len);
- strncpy(pSMB->fileName, fileName, name_len);
+ strncpy(pSMB->fileName, file_name, name_len);
}
- if (*pOplock & REQ_OPLOCK)
+ if (*oplock & REQ_OPLOCK)
pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
- else if (*pOplock & REQ_BATCHOPLOCK)
+ else if (*oplock & REQ_BATCHOPLOCK)
pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
pSMB->DesiredAccess = cpu_to_le32(access_flags);
pSMB->AllocationSize = 0;
- /* set file as system file if special file such
- as fifo and server expecting SFU style and
- no Unix extensions */
+ /*
+ * set file as system file if special file such as fifo and server
+ * expecting SFU style and no Unix extensions
+ */
if (create_options & CREATE_OPTION_SPECIAL)
pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
else
@@ -1347,8 +1350,8 @@ openRetry:
if (create_options & CREATE_OPTION_READONLY)
pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);

- pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
- pSMB->CreateDisposition = cpu_to_le32(openDisposition);
+ pSMB->ShareAccess = cpu_to_le32(share_flags);
+ pSMB->CreateDisposition = cpu_to_le32(disposition);
pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
/* BB Expirement with various impersonation levels and verify */
pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
@@ -1366,20 +1369,20 @@ openRetry:
if (rc) {
cFYI(1, "Error in Open = %d", rc);
} else {
- *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
+ *oplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
*netfid = pSMBr->Fid; /* cifs fid stays in le */
/* Let caller know file was created so we can set the mode. */
/* Do we care about the CreateAction in any other cases? */
if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
- *pOplock |= CIFS_CREATE_ACTION;
- if (pfile_info) {
- memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime,
+ *oplock |= CIFS_CREATE_ACTION;
+ if (file_info) {
+ memcpy((char *)file_info, (char *)&pSMBr->CreationTime,
36 /* CreationTime to Attributes */);
/* the file_info buf is endian converted by caller */
- pfile_info->AllocationSize = pSMBr->AllocationSize;
- pfile_info->EndOfFile = pSMBr->EndOfFile;
- pfile_info->NumberOfLinks = cpu_to_le32(1);
- pfile_info->DeletePending = 0;
+ file_info->AllocationSize = pSMBr->AllocationSize;
+ file_info->EndOfFile = pSMBr->EndOfFile;
+ file_info->NumberOfLinks = cpu_to_le32(1);
+ file_info->DeletePending = 0;
}
}

diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 8719bbe..6975072 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -203,6 +203,7 @@ 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;

*oplock = 0;
@@ -293,6 +294,8 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
else
cFYI(1, "Create flag not set in create function");

+ share_access = cifs_get_share_flags(oflags);
+
/*
* BB add processing to set equivalent of mode - e.g. via CreateX with
* ACLs
@@ -320,8 +323,8 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
create_options |= CREATE_OPEN_BACKUP_INTENT;

rc = server->ops->open(xid, tcon, full_path, disposition,
- desired_access, create_options, fid, oplock,
- buf, cifs_sb);
+ desired_access, share_access, create_options,
+ fid, oplock, buf, cifs_sb);
if (rc) {
cFYI(1, "cifs_create returned 0x%x", rc);
goto out;
@@ -626,9 +629,9 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;

- rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE,
- GENERIC_WRITE, create_options,
- &fileHandle, &oplock, buf, cifs_sb->local_nls,
+ rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE, GENERIC_WRITE,
+ FILE_SHARE_ALL, create_options, &fileHandle, &oplock,
+ buf, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc)
goto mknod_out;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 8ea6ca5..3ad484c 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -174,6 +174,7 @@ 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;
@@ -209,6 +210,7 @@ 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 */

@@ -220,8 +222,8 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
create_options |= CREATE_OPEN_BACKUP_INTENT;

rc = server->ops->open(xid, tcon, full_path, disposition,
- desired_access, create_options, fid, oplock, buf,
- cifs_sb);
+ desired_access, share_access, create_options,
+ fid, oplock, buf, cifs_sb);

if (rc)
goto out;
@@ -579,6 +581,7 @@ 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_fid fid;
@@ -643,6 +646,7 @@ 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;
@@ -658,8 +662,8 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
* not dirty locally we could do this.
*/
rc = server->ops->open(xid, tcon, full_path, disposition,
- desired_access, create_options, &fid, &oplock,
- NULL, cifs_sb);
+ desired_access, share_access, create_options,
+ &fid, &oplock, NULL, cifs_sb);
if (rc) {
mutex_unlock(&cfile->fh_mutex);
cFYI(1, "cifs_reopen returned 0x%x", rc);
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index ed6208f..a497dfa 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -396,8 +396,8 @@ cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
tcon = tlink_tcon(tlink);

rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, NULL,
- cifs_sb->local_nls,
+ FILE_SHARE_ALL, CREATE_NOT_DIR, &netfid, &oplock,
+ NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc == 0) {
@@ -987,8 +987,9 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
tcon = tlink_tcon(tlink);

rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
- &netfid, &oplock, NULL, cifs_sb->local_nls,
+ DELETE|FILE_WRITE_ATTRIBUTES, FILE_SHARE_ALL,
+ CREATE_NOT_DIR, &netfid, &oplock, NULL,
+ cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc != 0)
goto out;
@@ -1509,7 +1510,7 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,

/* open the file to be renamed -- we need DELETE perms */
rc = CIFSSMBOpen(xid, tcon, from_path, FILE_OPEN, DELETE,
- CREATE_NOT_DIR, &srcfid, &oplock, NULL,
+ FILE_SHARE_ALL, CREATE_NOT_DIR, &srcfid, &oplock, NULL,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc == 0) {
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 51dc2fb..9b4f0db 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -212,7 +212,7 @@ CIFSCreateMFSymLink(const unsigned int xid, struct cifs_tcon *tcon,
create_options |= CREATE_OPEN_BACKUP_INTENT;

rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE,
- create_options, &netfid, &oplock, NULL,
+ FILE_SHARE_ALL, create_options, &netfid, &oplock, NULL,
nls_codepage, remap);
if (rc != 0) {
kfree(buf);
@@ -254,8 +254,8 @@ CIFSQueryMFSymLink(const unsigned int xid, struct cifs_tcon *tcon,
FILE_ALL_INFO file_info;

rc = CIFSSMBOpen(xid, tcon, searchName, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, &file_info,
- nls_codepage, remap);
+ FILE_SHARE_ALL, CREATE_NOT_DIR, &netfid, &oplock,
+ &file_info, nls_codepage, remap);
if (rc != 0)
return rc;

@@ -332,8 +332,8 @@ CIFSCheckMFSymlink(struct cifs_fattr *fattr,
pTcon = tlink_tcon(tlink);

rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, &file_info,
- cifs_sb->local_nls,
+ FILE_SHARE_ALL, CREATE_NOT_DIR, &netfid, &oplock,
+ &file_info, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc != 0)
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index cdd6ff4..726b52e 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -224,7 +224,7 @@ 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_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (!rc) {
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 47bc5a8..d782209 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -671,9 +671,9 @@ cifs_mkdir_setinfo(struct inode *inode, const char *full_path,

static int
cifs_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *path,
- int disposition, int desired_access, int create_options,
- struct cifs_fid *fid, __u32 *oplock, FILE_ALL_INFO *buf,
- struct cifs_sb_info *cifs_sb)
+ int disposition, int desired_access, int share_access,
+ int create_options, struct cifs_fid *fid, __u32 *oplock,
+ FILE_ALL_INFO *buf, struct cifs_sb_info *cifs_sb)
{
if (!(tcon->ses->capabilities & CAP_NT_SMBS))
return SMBLegacyOpen(xid, tcon, path, disposition,
@@ -682,8 +682,8 @@ cifs_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *path,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR);
return CIFSSMBOpen(xid, tcon, path, disposition, desired_access,
- create_options, &fid->netfid, oplock, buf,
- cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ share_access, create_options, &fid->netfid, oplock,
+ buf, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
}

@@ -779,8 +779,9 @@ smb_set_file_info(struct inode *inode, const char *full_path,
cFYI(1, "calling SetFileInfo since SetPathInfo for times not supported "
"by this server");
rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
- &netfid, &oplock, NULL, cifs_sb->local_nls,
+ SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, FILE_SHARE_ALL,
+ CREATE_NOT_DIR, &netfid, &oplock, NULL,
+ cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);

if (rc != 0) {
diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
index 71e6aed..7dfb50c 100644
--- a/fs/cifs/smb2file.c
+++ b/fs/cifs/smb2file.c
@@ -58,9 +58,9 @@ smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock)

int
smb2_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *path,
- int disposition, int desired_access, int create_options,
- struct cifs_fid *fid, __u32 *oplock, FILE_ALL_INFO *buf,
- struct cifs_sb_info *cifs_sb)
+ int disposition, int desired_access, int share_access,
+ int create_options, struct cifs_fid *fid, __u32 *oplock,
+ FILE_ALL_INFO *buf, struct cifs_sb_info *cifs_sb)
{
int rc;
__le16 *smb2_path;
@@ -87,8 +87,8 @@ smb2_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *path,
memcpy(smb2_oplock + 1, fid->lease_key, SMB2_LEASE_KEY_SIZE);

rc = SMB2_open(xid, tcon, smb2_path, &fid->persistent_fid,
- &fid->volatile_fid, desired_access, disposition,
- 0, 0, smb2_oplock, smb2_data);
+ &fid->volatile_fid, desired_access, share_access,
+ disposition, 0, 0, smb2_oplock, smb2_data);
if (rc)
goto out;

diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index 7064824..6af174a 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -54,8 +54,8 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
return -ENOMEM;

rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
- desired_access, create_disposition, file_attributes,
- create_options, &oplock, NULL);
+ desired_access, FILE_SHARE_ALL, create_disposition,
+ file_attributes, create_options, &oplock, NULL);
if (rc) {
kfree(utf16_path);
return rc;
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index c9c7aa7..dc38434 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -222,7 +222,8 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
return -ENOMEM;

rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
- FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, &oplock, NULL);
+ FILE_READ_ATTRIBUTES, FILE_SHARE_ALL, FILE_OPEN, 0, 0,
+ &oplock, NULL);
if (rc) {
kfree(utf16_path);
return rc;
@@ -432,8 +433,8 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
return -ENOMEM;

rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
- FILE_READ_ATTRIBUTES | FILE_READ_DATA, FILE_OPEN, 0, 0,
- &oplock, NULL);
+ FILE_READ_ATTRIBUTES | FILE_READ_DATA, FILE_SHARE_ALL,
+ FILE_OPEN, 0, 0, &oplock, NULL);
kfree(utf16_path);
if (rc) {
cERROR(1, "open dir failed");
@@ -515,7 +516,8 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;

rc = SMB2_open(xid, tcon, &srch_path, &persistent_fid, &volatile_fid,
- FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, &oplock, NULL);
+ FILE_READ_ATTRIBUTES, FILE_SHARE_ALL, FILE_OPEN, 0, 0,
+ &oplock, NULL);
if (rc)
return rc;
buf->f_type = SMB2_MAGIC_NUMBER;
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 41d9d07..45fa2dc 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -910,8 +910,8 @@ parse_lease_state(struct smb2_create_rsp *rsp)
int
SMB2_open(const unsigned int xid, struct cifs_tcon *tcon, __le16 *path,
u64 *persistent_fid, u64 *volatile_fid, __u32 desired_access,
- __u32 create_disposition, __u32 file_attributes, __u32 create_options,
- __u8 *oplock, struct smb2_file_all_info *buf)
+ __u32 share_access, __u32 create_disposition, __u32 file_attributes,
+ __u32 create_options, __u8 *oplock, struct smb2_file_all_info *buf)
{
struct smb2_create_req *req;
struct smb2_create_rsp *rsp;
@@ -940,7 +940,7 @@ SMB2_open(const unsigned int xid, struct cifs_tcon *tcon, __le16 *path,
req->DesiredAccess = cpu_to_le32(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(share_access);
req->CreateDisposition = cpu_to_le32(create_disposition);
req->CreateOptions = cpu_to_le32(create_options);
uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2;
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index 2aa3535..edff8f6 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -86,9 +86,10 @@ extern int smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,

extern int smb2_open_file(const unsigned int xid, struct cifs_tcon *tcon,
const char *full_path, int disposition,
- int desired_access, int create_options,
- struct cifs_fid *fid, __u32 *oplock,
- FILE_ALL_INFO *buf, struct cifs_sb_info *cifs_sb);
+ int desired_access, int share_access,
+ int create_options, struct cifs_fid *fid,
+ __u32 *oplock, FILE_ALL_INFO *buf,
+ struct cifs_sb_info *cifs_sb);
extern void smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
extern int smb2_unlock_range(struct cifsFileInfo *cfile,
struct file_lock *flock, const unsigned int xid);
@@ -108,9 +109,10 @@ extern int SMB2_tcon(const unsigned int xid, struct cifs_ses *ses,
extern int SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon);
extern int SMB2_open(const unsigned int xid, struct cifs_tcon *tcon,
__le16 *path, u64 *persistent_fid, u64 *volatile_fid,
- __u32 desired_access, __u32 create_disposition,
- __u32 file_attributes, __u32 create_options,
- __u8 *oplock, struct smb2_file_all_info *buf);
+ __u32 desired_access, __u32 share_access,
+ __u32 create_disposition, __u32 file_attributes,
+ __u32 create_options, __u8 *oplock,
+ struct smb2_file_all_info *buf);
extern int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id);
extern int SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon,
--
1.8.1.2

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