fs/nfsd/vfs.h

   1 /*
   2  * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
   3  */
   4
   5 #ifndef LINUX_NFSD_VFS_H
   6 #define LINUX_NFSD_VFS_H
   7
   8 #include "nfsfh.h"
   9
  10 /*
  11  * Flags for nfsd_permission
  12  */
  13 #define NFSD_MAY_NOP                    0
  14 #define NFSD_MAY_EXEC                   0x001 /* == MAY_EXEC */
  15 #define NFSD_MAY_WRITE                  0x002 /* == MAY_WRITE */
  16 #define NFSD_MAY_READ                   0x004 /* == MAY_READ */
  17 #define NFSD_MAY_SATTR                  0x008
  18 #define NFSD_MAY_TRUNC                  0x010
  19 #define NFSD_MAY_LOCK                   0x020
  20 #define NFSD_MAY_MASK                   0x03f
  21
  22 /* extra hints to permission and open routines: */
  23 #define NFSD_MAY_OWNER_OVERRIDE         0x040
  24 #define NFSD_MAY_LOCAL_ACCESS           0x080 /* for device special files */
  25 #define NFSD_MAY_BYPASS_GSS_ON_ROOT     0x100
  26 #define NFSD_MAY_NOT_BREAK_LEASE        0x200
  27 #define NFSD_MAY_BYPASS_GSS             0x400
  28 #define NFSD_MAY_READ_IF_EXEC           0x800
  29
  30 #define NFSD_MAY_CREATE         (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
  31 #define NFSD_MAY_REMOVE         (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
  32
  33 /*
  34  * Callback function for readdir
  35  */
  36 typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int);
  37
  38 /* nfsd/vfs.c */
  39 int             fh_lock_parent(struct svc_fh *, struct dentry *);
  40 int             nfsd_racache_init(int);
  41 void            nfsd_racache_shutdown(void);
  42 int             nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
  43                                 struct svc_export **expp);
  44 __be32          nfsd_lookup(struct svc_rqst *, struct svc_fh *,
  45                                 const char *, unsigned int, struct svc_fh *);
  46 __be32           nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
  47                                 const char *, unsigned int,
  48                                 struct svc_export **, struct dentry **);
  49 __be32          nfsd_setattr(struct svc_rqst *, struct svc_fh *,
  50                                 struct iattr *, int, time_t);
  51 int nfsd_mountpoint(struct dentry *, struct svc_export *);
  52 #ifdef CONFIG_NFSD_V4
  53 __be32          nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *,
  54                     struct nfs4_acl *);
  55 int             nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **);
  56 #endif /* CONFIG_NFSD_V4 */
  57 __be32          nfsd_create(struct svc_rqst *, struct svc_fh *,
  58                                 char *name, int len, struct iattr *attrs,
  59                                 int type, dev_t rdev, struct svc_fh *res);
  60 #ifdef CONFIG_NFSD_V3
  61 __be32          nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
  62 __be32          do_nfsd_create(struct svc_rqst *, struct svc_fh *,
  63                                 char *name, int len, struct iattr *attrs,
  64                                 struct svc_fh *res, int createmode,
  65                                 u32 *verifier, bool *truncp, bool *created);
  66 __be32          nfsd_commit(struct svc_rqst *, struct svc_fh *,
  67                                 loff_t, unsigned long);
  68 #endif /* CONFIG_NFSD_V3 */
  69 __be32          nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
  70                                 int, struct file **);
  71 void            nfsd_close(struct file *);
  72 __be32          nfsd_read(struct svc_rqst *, struct svc_fh *,
  73                                 loff_t, struct kvec *, int, unsigned long *);
  74 __be32          nfsd_read_file(struct svc_rqst *, struct svc_fh *, struct file *,
  75                                 loff_t, struct kvec *, int, unsigned long *);
  76 __be32          nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
  77                                 loff_t, struct kvec *,int, unsigned long *, int *);
  78 __be32          nfsd_readlink(struct svc_rqst *, struct svc_fh *,
  79                                 char *, int *);
  80 __be32          nfsd_symlink(struct svc_rqst *, struct svc_fh *,
  81                                 char *name, int len, char *path, int plen,
  82                                 struct svc_fh *res, struct iattr *);
  83 __be32          nfsd_link(struct svc_rqst *, struct svc_fh *,
  84                                 char *, int, struct svc_fh *);
  85 __be32          nfsd_rename(struct svc_rqst *,
  86                                 struct svc_fh *, char *, int,
  87                                 struct svc_fh *, char *, int);
  88 __be32          nfsd_remove(struct svc_rqst *,
  89                                 struct svc_fh *, char *, int);
  90 __be32          nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
  91                                 char *name, int len);
  92 int             nfsd_truncate(struct svc_rqst *, struct svc_fh *,
  93                                 unsigned long size);
  94 __be32          nfsd_readdir(struct svc_rqst *, struct svc_fh *,
  95                              loff_t *, struct readdir_cd *, filldir_t);
  96 __be32          nfsd_statfs(struct svc_rqst *, struct svc_fh *,
  97                                 struct kstatfs *, int access);
  98
  99 int             nfsd_notify_change(struct inode *, struct iattr *);
 100 __be32          nfsd_permission(struct svc_rqst *, struct svc_export *,
 101                                 struct dentry *, int);
 102 int             nfsd_sync_dir(struct dentry *dp);
 103
 104 #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
 105 struct posix_acl *nfsd_get_posix_acl(struct svc_fh *, int);
 106 int nfsd_set_posix_acl(struct svc_fh *, int, struct posix_acl *);
 107 #endif
 108
 109 static inline int fh_want_write(struct svc_fh *fh)
 110 {
 111         return mnt_want_write(fh->fh_export->ex_path.mnt);
 112 }
 113
 114 static inline void fh_drop_write(struct svc_fh *fh)
 115 {
 116         mnt_drop_write(fh->fh_export->ex_path.mnt);
 117 }
 118
 119 #endif /* LINUX_NFSD_VFS_H */