linux/fs/smb/client/smb2inode.c

// SPDX-License-Identifier: LGPL-2.1
/*
 *
 *   Copyright (C) International Business Machines  Corp., 2002, 2011
 *                 Etersoft, 2012
 *   Author(s): Pavel Shilovsky ([email protected]),
 *              Steve French ([email protected])
 *
 */
#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"
#include "cached_dir.h"
#include "../common/smb2status.h"

static struct reparse_data_buffer *reparse_buf_ptr(struct kvec *iov)
{ … }

static inline __u32 file_create_options(struct dentry *dentry)
{ … }

/* Parse owner and group from SMB3.1.1 POSIX query info */
static int parse_posix_sids(struct cifs_open_info_data *data,
			    struct kvec *rsp_iov)
{ … }

struct wsl_query_ea { … } __packed;

#define NEXT_OFF …

static const struct wsl_query_ea wsl_query_eas[] = …;

static int check_wsl_eas(struct kvec *rsp_iov)
{ … }

/*
 * note: If cfile is passed, the reference to it is dropped here.
 * So make sure that you do not reuse cfile after return from this func.
 *
 * If passing @out_iov and @out_buftype, ensure to make them both large enough
 * (>= 3) to hold all compounded responses.  Caller is also responsible for
 * freeing them up with free_rsp_buf().
 */
static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
			    struct cifs_sb_info *cifs_sb, const char *full_path,
			    struct cifs_open_parms *oparms, struct kvec *in_iov,
			    int *cmds, int num_cmds, struct cifsFileInfo *cfile,
			    struct kvec *out_iov, int *out_buftype, struct dentry *dentry)
{ … }

static int parse_create_response(struct cifs_open_info_data *data,
				 struct cifs_sb_info *cifs_sb,
				 const struct kvec *iov)
{ … }

int smb2_query_path_info(const unsigned int xid,
			 struct cifs_tcon *tcon,
			 struct cifs_sb_info *cifs_sb,
			 const char *full_path,
			 struct cifs_open_info_data *data)
{ … }

int
smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
	   struct cifs_tcon *tcon, const char *name,
	   struct cifs_sb_info *cifs_sb)
{ … }

void
smb2_mkdir_setinfo(struct inode *inode, const char *name,
		   struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
		   const unsigned int xid)
{ … }

int
smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
	   struct cifs_sb_info *cifs_sb)
{ … }

int
smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
	    struct cifs_sb_info *cifs_sb, struct dentry *dentry)
{ … }

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 create_options, __u32 access,
			      int command, struct cifsFileInfo *cfile,
				  struct dentry *dentry)
{ … }

int smb2_rename_path(const unsigned int xid,
		     struct cifs_tcon *tcon,
		     struct dentry *source_dentry,
		     const char *from_name, const char *to_name,
		     struct cifs_sb_info *cifs_sb)
{ … }

int smb2_create_hardlink(const unsigned int xid,
			 struct cifs_tcon *tcon,
			 struct dentry *source_dentry,
			 const char *from_name, const char *to_name,
			 struct cifs_sb_info *cifs_sb)
{ … }

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,
		   struct dentry *dentry)
{ … }

int
smb2_set_file_info(struct inode *inode, const char *full_path,
		   FILE_BASIC_INFO *buf, const unsigned int xid)
{ … }

struct inode *smb2_get_reparse_inode(struct cifs_open_info_data *data,
				     struct super_block *sb,
				     const unsigned int xid,
				     struct cifs_tcon *tcon,
				     const char *full_path,
				     bool directory,
				     struct kvec *reparse_iov,
				     struct kvec *xattr_iov)
{ … }

int smb2_query_reparse_point(const unsigned int xid,
			     struct cifs_tcon *tcon,
			     struct cifs_sb_info *cifs_sb,
			     const char *full_path,
			     u32 *tag, struct kvec *rsp,
			     int *rsp_buftype)
{ … }