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

From: Jeff Layton
Date: Mon Mar 11 2013 - 15:15:52 EST

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On Thu, 28 Feb 2013 19:25:29 +0400
Pavel Shilovsky <piastry@xxxxxxxxxxx> wrote:

> 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);

Yuck...maybe it's time for a struct cifs_openargs? At the very least,
while you're in here, it would be good to just pass in a cifs_sb
instead of a nls_table and a remap flag.

> 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,

--
Jeff Layton <jlayton@xxxxxxxxxxxxxxx>
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