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6#ifndef LINUX_NFSD_VFS_H
7#define LINUX_NFSD_VFS_H
8
9#include "nfsfh.h"
10#include "nfsd.h"
11
12
13
14
15#define NFSD_MAY_NOP 0
16#define NFSD_MAY_EXEC 0x001
17#define NFSD_MAY_WRITE 0x002
18#define NFSD_MAY_READ 0x004
19#define NFSD_MAY_SATTR 0x008
20#define NFSD_MAY_TRUNC 0x010
21#define NFSD_MAY_LOCK 0x020
22#define NFSD_MAY_MASK 0x03f
23
24
25#define NFSD_MAY_OWNER_OVERRIDE 0x040
26#define NFSD_MAY_LOCAL_ACCESS 0x080
27#define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100
28#define NFSD_MAY_NOT_BREAK_LEASE 0x200
29#define NFSD_MAY_BYPASS_GSS 0x400
30#define NFSD_MAY_READ_IF_EXEC 0x800
31
32#define NFSD_MAY_64BIT_COOKIE 0x1000
33
34#define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
35#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
36
37struct nfsd_file;
38
39
40
41
42typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
43
44
45int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
46 struct svc_export **expp);
47__be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *,
48 const char *, unsigned int, struct svc_fh *);
49__be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
50 const char *, unsigned int,
51 struct svc_export **, struct dentry **);
52__be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *,
53 struct iattr *, int, time64_t);
54int nfsd_mountpoint(struct dentry *, struct svc_export *);
55#ifdef CONFIG_NFSD_V4
56__be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *,
57 struct xdr_netobj *);
58__be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *,
59 struct file *, loff_t, loff_t, int);
60__be32 nfsd4_clone_file_range(struct svc_rqst *rqstp,
61 struct nfsd_file *nf_src, u64 src_pos,
62 struct nfsd_file *nf_dst, u64 dst_pos,
63 u64 count, bool sync);
64#endif
65__be32 nfsd_create_locked(struct svc_rqst *, struct svc_fh *,
66 char *name, int len, struct iattr *attrs,
67 int type, dev_t rdev, struct svc_fh *res);
68__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
69 char *name, int len, struct iattr *attrs,
70 int type, dev_t rdev, struct svc_fh *res);
71#ifdef CONFIG_NFSD_V3
72__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
73__be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *,
74 char *name, int len, struct iattr *attrs,
75 struct svc_fh *res, int createmode,
76 u32 *verifier, bool *truncp, bool *created);
77__be32 nfsd_commit(struct svc_rqst *rqst, struct svc_fh *fhp,
78 u64 offset, u32 count, __be32 *verf);
79#endif
80#ifdef CONFIG_NFSD_V4
81__be32 nfsd_getxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
82 char *name, void **bufp, int *lenp);
83__be32 nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
84 char **bufp, int *lenp);
85__be32 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
86 char *name);
87__be32 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
88 char *name, void *buf, u32 len, u32 flags);
89#endif
90int nfsd_open_break_lease(struct inode *, int);
91__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
92 int, struct file **);
93__be32 nfsd_open_verified(struct svc_rqst *, struct svc_fh *, umode_t,
94 int, struct file **);
95__be32 nfsd_splice_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
96 struct file *file, loff_t offset,
97 unsigned long *count,
98 u32 *eof);
99__be32 nfsd_readv(struct svc_rqst *rqstp, struct svc_fh *fhp,
100 struct file *file, loff_t offset,
101 struct kvec *vec, int vlen,
102 unsigned long *count,
103 u32 *eof);
104__be32 nfsd_read(struct svc_rqst *, struct svc_fh *,
105 loff_t, struct kvec *, int, unsigned long *,
106 u32 *eof);
107__be32 nfsd_write(struct svc_rqst *, struct svc_fh *, loff_t,
108 struct kvec *, int, unsigned long *,
109 int stable, __be32 *verf);
110__be32 nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp,
111 struct nfsd_file *nf, loff_t offset,
112 struct kvec *vec, int vlen, unsigned long *cnt,
113 int stable, __be32 *verf);
114__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *,
115 char *, int *);
116__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *,
117 char *name, int len, char *path,
118 struct svc_fh *res);
119__be32 nfsd_link(struct svc_rqst *, struct svc_fh *,
120 char *, int, struct svc_fh *);
121ssize_t nfsd_copy_file_range(struct file *, u64,
122 struct file *, u64, u64);
123__be32 nfsd_rename(struct svc_rqst *,
124 struct svc_fh *, char *, int,
125 struct svc_fh *, char *, int);
126__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
127 char *name, int len);
128__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
129 loff_t *, struct readdir_cd *, nfsd_filldir_t);
130__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
131 struct kstatfs *, int access);
132
133__be32 nfsd_permission(struct svc_rqst *, struct svc_export *,
134 struct dentry *, int);
135
136static inline int fh_want_write(struct svc_fh *fh)
137{
138 int ret;
139
140 if (fh->fh_want_write)
141 return 0;
142 ret = mnt_want_write(fh->fh_export->ex_path.mnt);
143 if (!ret)
144 fh->fh_want_write = true;
145 return ret;
146}
147
148static inline void fh_drop_write(struct svc_fh *fh)
149{
150 if (fh->fh_want_write) {
151 fh->fh_want_write = false;
152 mnt_drop_write(fh->fh_export->ex_path.mnt);
153 }
154}
155
156static inline __be32 fh_getattr(const struct svc_fh *fh, struct kstat *stat)
157{
158 struct path p = {.mnt = fh->fh_export->ex_path.mnt,
159 .dentry = fh->fh_dentry};
160 return nfserrno(vfs_getattr(&p, stat, STATX_BASIC_STATS,
161 AT_STATX_SYNC_AS_STAT));
162}
163
164static inline int nfsd_create_is_exclusive(int createmode)
165{
166 return createmode == NFS3_CREATE_EXCLUSIVE
167 || createmode == NFS4_CREATE_EXCLUSIVE4_1;
168}
169
170#endif
171
