source/include/vfs.h

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    VFS structures and parameters
   5    Copyright (C) Tim Potter 1999
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #ifndef _VFS_H
  23 #define _VFS_H
  24
  25 /* Avoid conflict with an AIX include file */
  26
  27 #ifdef vfs_ops
  28 #undef vfs_ops
  29 #endif
  30
  31 /*
  32  * As we're now (thanks Andrew ! :-) using file_structs and connection
  33  * structs in the vfs - then anyone writing a vfs must include includes.h...
  34  */
  35
  36 /*
  37  * This next constant specifies the version number of the VFS interface
  38  * this smbd will load. Increment this if *ANY* changes are made to the
  39  * vfs_ops below. JRA.
  40  */
  41
  42 /* Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA. */
  43 #define SMB_VFS_INTERFACE_VERSION 2
  44
  45 /* VFS operations structure */
  46
  47 struct connection_struct;
  48 struct files_struct;
  49 struct security_descriptor_info;
  50
  51 struct vfs_ops {
  52
  53         /* Disk operations */
  54
  55         int (*connect)(struct connection_struct *conn, char *service, char *user);
  56         void (*disconnect)(struct connection_struct *conn);
  57         SMB_BIG_UINT (*disk_free)(struct connection_struct *conn, char *path, BOOL small_query, SMB_BIG_UINT *bsize,
  58                 SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize);
  59
  60         /* Directory operations */
  61
  62         DIR *(*opendir)(struct connection_struct *conn, char *fname);
  63         struct dirent *(*readdir)(struct connection_struct *conn, DIR *dirp);
  64         int (*mkdir)(struct connection_struct *conn, char *path, mode_t mode);
  65         int (*rmdir)(struct connection_struct *conn, char *path);
  66         int (*closedir)(struct connection_struct *conn, DIR *dir);
  67
  68         /* File operations */
  69
  70         int (*open)(struct connection_struct *conn, char *fname, int flags, mode_t mode);
  71         int (*close)(struct files_struct *fsp, int fd);
  72         ssize_t (*read)(struct files_struct *fsp, int fd, void *data, size_t n);
  73         ssize_t (*write)(struct files_struct *fsp, int fd, const void *data, size_t n);
  74         SMB_OFF_T (*lseek)(struct files_struct *fsp, int filedes, SMB_OFF_T offset, int whence);
  75         int (*rename)(struct connection_struct *conn, char *old, char *new);
  76         int (*fsync)(struct files_struct *fsp, int fd);
  77         int (*stat)(struct connection_struct *conn, char *fname, SMB_STRUCT_STAT *sbuf);
  78         int (*fstat)(struct files_struct *fsp, int fd, SMB_STRUCT_STAT *sbuf);
  79         int (*lstat)(struct connection_struct *conn, char *path, SMB_STRUCT_STAT *sbuf);
  80         int (*unlink)(struct connection_struct *conn, char *path);
  81         int (*chmod)(struct connection_struct *conn, char *path, mode_t mode);
  82         int (*fchmod)(struct files_struct *fsp, int fd, mode_t mode);
  83         int (*chown)(struct connection_struct *conn, char *path, uid_t uid, gid_t gid);
  84         int (*fchown)(struct files_struct *fsp, int fd, uid_t uid, gid_t gid);
  85         int (*chdir)(struct connection_struct *conn, char *path);
  86         char *(*getwd)(struct connection_struct *conn, char *buf);
  87         int (*utime)(struct connection_struct *conn, char *path, struct utimbuf *times);
  88         int (*ftruncate)(struct files_struct *fsp, int fd, SMB_OFF_T offset);
  89         BOOL (*lock)(struct files_struct *fsp, int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type);
  90         int (*symlink)(struct connection_struct *conn, const char *oldpath, const char *newpath);
  91         int (*readlink)(struct connection_struct *conn, const char *path, char *buf, size_t bufsiz);
  92         int (*link)(struct connection_struct *conn, const char *oldpath, const char *newpath);
  93         int (*mknod)(struct connection_struct *conn, const char *path, mode_t mode, SMB_DEV_T dev);
  94         char *(*realpath)(struct connection_struct *conn, const char *path, char *resolved_path);
  95
  96         /* NT ACL operations. */
  97
  98         size_t (*fget_nt_acl)(struct files_struct *fsp, int fd, struct security_descriptor_info **ppdesc);
  99         size_t (*get_nt_acl)(struct files_struct *fsp, char *name, struct security_descriptor_info **ppdesc);
 100         BOOL (*fset_nt_acl)(struct files_struct *fsp, int fd, uint32 security_info_sent, struct security_descriptor_info *psd);
 101         BOOL (*set_nt_acl)(struct files_struct *fsp, char *name, uint32 security_info_sent, struct security_descriptor_info *psd);
 102
 103         /* POSIX ACL operations. */
 104
 105         int (*chmod_acl)(struct connection_struct *conn, char *name, mode_t mode);
 106         int (*fchmod_acl)(struct files_struct *fsp, int fd, mode_t mode);
 107
 108 };
 109
 110 struct vfs_options {
 111     struct vfs_options *prev, *next;
 112     char *name;
 113     char *value;
 114 };
 115
 116 #endif /* _VFS_H */