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gerrit-public.fairphone.software / kernel / msm-4.9 / 440e5aefa7d6efd46f2c166cc9410237847f7721 / . / fs / nfsd / vfs.h
blob: 2050cb016998fd55dacc854bbc95f484c5f4c341 [file] [log] [blame]
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]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
J. Bruce Fields1557aca2009-12-04 19:36:06 -0500[diff] [blame]8#include "nfsfh.h"
Al Viro3dadecc2013-01-24 02:18:08 -0500[diff] [blame]9#include "nfsd.h"
J. Bruce Fields1557aca2009-12-04 19:36:06 -0500[diff] [blame]10
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]11/*
12 * Flags for nfsd_permission
13 */
J. Bruce Fields8e82fa82011-08-25 14:23:39 -0400[diff] [blame]14#define NFSD_MAY_NOP 0
15#define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */
16#define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */
17#define NFSD_MAY_READ 0x004 /* == MAY_READ */
18#define NFSD_MAY_SATTR 0x008
19#define NFSD_MAY_TRUNC 0x010
20#define NFSD_MAY_LOCK 0x020
21#define NFSD_MAY_MASK 0x03f
J. Bruce Fieldsaea93392011-04-10 10:35:12 -0400[diff] [blame]22
23/* extra hints to permission and open routines: */
J. Bruce Fields8e82fa82011-08-25 14:23:39 -0400[diff] [blame]24#define NFSD_MAY_OWNER_OVERRIDE 0x040
25#define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */
26#define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100
27#define NFSD_MAY_NOT_BREAK_LEASE 0x200
28#define NFSD_MAY_BYPASS_GSS 0x400
29#define NFSD_MAY_READ_IF_EXEC 0x800
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]30
Bernd Schubert06effdb2012-03-18 22:44:50 -0400[diff] [blame]31#define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */
32
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]33#define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
34#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
35
36/*
37 * Callback function for readdir
38 */
Miklos Szerediac7576f2014-10-30 17:37:34 +0100[diff] [blame]39typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]40
41/* nfsd/vfs.c */
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]42int nfsd_racache_init(int);
43void nfsd_racache_shutdown(void);
44int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
45 struct svc_export **expp);
46__be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *,
47 const char *, unsigned int, struct svc_fh *);
48__be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
49 const char *, unsigned int,
50 struct svc_export **, struct dentry **);
51__be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *,
52 struct iattr *, int, time_t);
J. Bruce Fields3227fa42009-10-25 21:43:01 -0400[diff] [blame]53int nfsd_mountpoint(struct dentry *, struct svc_export *);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]54#ifdef CONFIG_NFSD_V4
David Quigley18032ca2013-05-02 13:19:10 -0400[diff] [blame]55__be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *,
56 struct xdr_netobj *);
Anna Schumaker95d871f2014-11-07 14:44:26 -0500[diff] [blame]57__be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *,
58 struct file *, loff_t, loff_t, int);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]59#endif /* CONFIG_NFSD_V4 */
60__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
61 char *name, int len, struct iattr *attrs,
62 int type, dev_t rdev, struct svc_fh *res);
63#ifdef CONFIG_NFSD_V3
64__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
Mi Jinlongac6721a2011-04-20 17:06:25 +0800[diff] [blame]65__be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *,
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]66 char *name, int len, struct iattr *attrs,
67 struct svc_fh *res, int createmode,
J. Bruce Fields856121b2011-10-13 11:37:11 -0400[diff] [blame]68 u32 *verifier, bool *truncp, bool *created);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]69__be32 nfsd_commit(struct svc_rqst *, struct svc_fh *,
70 loff_t, unsigned long);
71#endif /* CONFIG_NFSD_V3 */
Al Viro175a4eb2011-07-26 03:30:54 -0400[diff] [blame]72__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]73 int, struct file **);
74void nfsd_close(struct file *);
J. Bruce Fieldsdc976182014-03-18 17:01:51 -0400[diff] [blame]75struct raparms;
76__be32 nfsd_get_tmp_read_open(struct svc_rqst *, struct svc_fh *,
77 struct file **, struct raparms **);
78void nfsd_put_tmp_read_open(struct file *, struct raparms *);
Jeff Laytone2afc812014-06-17 07:44:13 -0400[diff] [blame]79__be32 nfsd_splice_read(struct svc_rqst *,
J. Bruce Fieldsdc976182014-03-18 17:01:51 -0400[diff] [blame]80 struct file *, loff_t, unsigned long *);
Jeff Laytone2afc812014-06-17 07:44:13 -0400[diff] [blame]81__be32 nfsd_readv(struct file *, loff_t, struct kvec *, int,
J. Bruce Fieldsdc976182014-03-18 17:01:51 -0400[diff] [blame]82 unsigned long *);
J. Bruce Fields039a87c2010-07-30 11:33:32 -0400[diff] [blame]83__be32 nfsd_read(struct svc_rqst *, struct svc_fh *,
84 loff_t, struct kvec *, int, unsigned long *);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]85__be32 nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
86 loff_t, struct kvec *,int, unsigned long *, int *);
87__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *,
88 char *, int *);
89__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *,
J. Bruce Fields52ee0432014-06-20 11:52:21 -0400[diff] [blame]90 char *name, int len, char *path,
Kinglong Mee1e444f52014-07-01 17:48:02 +0800[diff] [blame]91 struct svc_fh *res);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]92__be32 nfsd_link(struct svc_rqst *, struct svc_fh *,
93 char *, int, struct svc_fh *);
94__be32 nfsd_rename(struct svc_rqst *,
95 struct svc_fh *, char *, int,
96 struct svc_fh *, char *, int);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]97__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
98 char *name, int len);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]99__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
Miklos Szerediac7576f2014-10-30 17:37:34 +0100[diff] [blame]100 loff_t *, struct readdir_cd *, nfsd_filldir_t);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]101__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
102 struct kstatfs *, int access);
103
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]104__be32 nfsd_permission(struct svc_rqst *, struct svc_export *,
105 struct dentry *, int);
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]106
Al Virobad0dcf2011-11-23 12:03:18 -0500[diff] [blame]107static inline int fh_want_write(struct svc_fh *fh)
108{
Jan Kara4a55c102012-06-12 16:20:33 +0200[diff] [blame]109 int ret = mnt_want_write(fh->fh_export->ex_path.mnt);
110
111 if (!ret)
112 fh->fh_want_write = 1;
113 return ret;
Al Virobad0dcf2011-11-23 12:03:18 -0500[diff] [blame]114}
115
116static inline void fh_drop_write(struct svc_fh *fh)
117{
Jan Kara4a55c102012-06-12 16:20:33 +0200[diff] [blame]118 if (fh->fh_want_write) {
119 fh->fh_want_write = 0;
120 mnt_drop_write(fh->fh_export->ex_path.mnt);
121 }
Al Virobad0dcf2011-11-23 12:03:18 -0500[diff] [blame]122}
123
Al Viro3dadecc2013-01-24 02:18:08 -0500[diff] [blame]124static inline __be32 fh_getattr(struct svc_fh *fh, struct kstat *stat)
125{
126 struct path p = {.mnt = fh->fh_export->ex_path.mnt,
127 .dentry = fh->fh_dentry};
128 return nfserrno(vfs_getattr(&p, stat));
129}
130
J. Bruce Fields0a3adad2009-11-04 18:12:35 -0500[diff] [blame]131#endif /* LINUX_NFSD_VFS_H */