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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__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
72__be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *,
73 char *name, int len, struct iattr *attrs,
74 struct svc_fh *res, int createmode,
75 u32 *verifier, bool *truncp, bool *created);
76__be32 nfsd_commit(struct svc_rqst *rqst, struct svc_fh *fhp,
77 u64 offset, u32 count, __be32 *verf);
78#ifdef CONFIG_NFSD_V4
79__be32 nfsd_getxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
80 char *name, void **bufp, int *lenp);
81__be32 nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
82 char **bufp, int *lenp);
83__be32 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
84 char *name);
85__be32 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
86 char *name, void *buf, u32 len, u32 flags);
87#endif
88int nfsd_open_break_lease(struct inode *, int);
89__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
90 int, struct file **);
91__be32 nfsd_open_verified(struct svc_rqst *, struct svc_fh *, umode_t,
92 int, struct file **);
93__be32 nfsd_splice_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
94 struct file *file, loff_t offset,
95 unsigned long *count,
96 u32 *eof);
97__be32 nfsd_readv(struct svc_rqst *rqstp, struct svc_fh *fhp,
98 struct file *file, loff_t offset,
99 struct kvec *vec, int vlen,
100 unsigned long *count,
101 u32 *eof);
102__be32 nfsd_read(struct svc_rqst *, struct svc_fh *,
103 loff_t, struct kvec *, int, unsigned long *,
104 u32 *eof);
105__be32 nfsd_write(struct svc_rqst *, struct svc_fh *, loff_t,
106 struct kvec *, int, unsigned long *,
107 int stable, __be32 *verf);
108__be32 nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp,
109 struct nfsd_file *nf, loff_t offset,
110 struct kvec *vec, int vlen, unsigned long *cnt,
111 int stable, __be32 *verf);
112__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *,
113 char *, int *);
114__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *,
115 char *name, int len, char *path,
116 struct svc_fh *res);
117__be32 nfsd_link(struct svc_rqst *, struct svc_fh *,
118 char *, int, struct svc_fh *);
119ssize_t nfsd_copy_file_range(struct file *, u64,
120 struct file *, u64, u64);
121__be32 nfsd_rename(struct svc_rqst *,
122 struct svc_fh *, char *, int,
123 struct svc_fh *, char *, int);
124__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
125 char *name, int len);
126__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
127 loff_t *, struct readdir_cd *, nfsd_filldir_t);
128__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
129 struct kstatfs *, int access);
130
131__be32 nfsd_permission(struct svc_rqst *, struct svc_export *,
132 struct dentry *, int);
133
134static inline int fh_want_write(struct svc_fh *fh)
135{
136 int ret;
137
138 if (fh->fh_want_write)
139 return 0;
140 ret = mnt_want_write(fh->fh_export->ex_path.mnt);
141 if (!ret)
142 fh->fh_want_write = true;
143 return ret;
144}
145
146static inline void fh_drop_write(struct svc_fh *fh)
147{
148 if (fh->fh_want_write) {
149 fh->fh_want_write = false;
150 mnt_drop_write(fh->fh_export->ex_path.mnt);
151 }
152}
153
154static inline __be32 fh_getattr(const struct svc_fh *fh, struct kstat *stat)
155{
156 struct path p = {.mnt = fh->fh_export->ex_path.mnt,
157 .dentry = fh->fh_dentry};
158 return nfserrno(vfs_getattr(&p, stat, STATX_BASIC_STATS,
159 AT_STATX_SYNC_AS_STAT));
160}
161
162static inline int nfsd_create_is_exclusive(int createmode)
163{
164 return createmode == NFS3_CREATE_EXCLUSIVE
165 || createmode == NFS4_CREATE_EXCLUSIVE4_1;
166}
167
168#endif
169
