Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
0a3adade BF |
2 | /* |
3 | * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> | |
4 | */ | |
5 | ||
6 | #ifndef LINUX_NFSD_VFS_H | |
7 | #define LINUX_NFSD_VFS_H | |
8 | ||
1557aca7 | 9 | #include "nfsfh.h" |
3dadecce | 10 | #include "nfsd.h" |
1557aca7 | 11 | |
0a3adade BF |
12 | /* |
13 | * Flags for nfsd_permission | |
14 | */ | |
8e82fa8f BF |
15 | #define NFSD_MAY_NOP 0 |
16 | #define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */ | |
17 | #define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */ | |
18 | #define NFSD_MAY_READ 0x004 /* == MAY_READ */ | |
19 | #define NFSD_MAY_SATTR 0x008 | |
20 | #define NFSD_MAY_TRUNC 0x010 | |
21 | #define NFSD_MAY_LOCK 0x020 | |
22 | #define NFSD_MAY_MASK 0x03f | |
aea93397 BF |
23 | |
24 | /* extra hints to permission and open routines: */ | |
8e82fa8f BF |
25 | #define NFSD_MAY_OWNER_OVERRIDE 0x040 |
26 | #define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */ | |
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 | |
0a3adade | 31 | |
06effdbb BS |
32 | #define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */ |
33 | ||
0a3adade BF |
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 | ||
16f8f894 TM |
37 | struct nfsd_file; |
38 | ||
0a3adade BF |
39 | /* |
40 | * Callback function for readdir | |
41 | */ | |
ac7576f4 | 42 | typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned); |
0a3adade BF |
43 | |
44 | /* nfsd/vfs.c */ | |
0a3adade BF |
45 | int 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 *, | |
2a1aa489 | 53 | struct iattr *, int, time64_t); |
3227fa41 | 54 | int nfsd_mountpoint(struct dentry *, struct svc_export *); |
0a3adade | 55 | #ifdef CONFIG_NFSD_V4 |
18032ca0 DQ |
56 | __be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *, |
57 | struct xdr_netobj *); | |
95d871f0 AS |
58 | __be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *, |
59 | struct file *, loff_t, loff_t, int); | |
a2f4c3fa TM |
60 | __be32 nfsd4_clone_file_range(struct svc_rqst *rqstp, |
61 | struct nfsd_file *nf_src, u64 src_pos, | |
b66ae6dd TM |
62 | struct nfsd_file *nf_dst, u64 dst_pos, |
63 | u64 count, bool sync); | |
0a3adade | 64 | #endif /* CONFIG_NFSD_V4 */ |
b44061d0 BF |
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); | |
0a3adade BF |
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); | |
0a3adade | 71 | __be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *); |
5f46e950 CL |
72 | __be32 nfsd_create_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, |
73 | struct svc_fh *resfhp, struct iattr *iap); | |
3f965021 CL |
74 | __be32 nfsd_commit(struct svc_rqst *rqst, struct svc_fh *fhp, |
75 | u64 offset, u32 count, __be32 *verf); | |
32119446 FL |
76 | #ifdef CONFIG_NFSD_V4 |
77 | __be32 nfsd_getxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
78 | char *name, void **bufp, int *lenp); | |
79 | __be32 nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
80 | char **bufp, int *lenp); | |
81 | __be32 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
82 | char *name); | |
83 | __be32 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
84 | char *name, void *buf, u32 len, u32 flags); | |
85 | #endif | |
65294c1f | 86 | int nfsd_open_break_lease(struct inode *, int); |
175a4eb7 | 87 | __be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t, |
0a3adade | 88 | int, struct file **); |
f4d84c52 | 89 | __be32 nfsd_open_verified(struct svc_rqst *, struct svc_fh *, |
65294c1f | 90 | int, struct file **); |
87c5942e CL |
91 | __be32 nfsd_splice_read(struct svc_rqst *rqstp, struct svc_fh *fhp, |
92 | struct file *file, loff_t offset, | |
83a63072 TM |
93 | unsigned long *count, |
94 | u32 *eof); | |
87c5942e CL |
95 | __be32 nfsd_readv(struct svc_rqst *rqstp, struct svc_fh *fhp, |
96 | struct file *file, loff_t offset, | |
97 | struct kvec *vec, int vlen, | |
83a63072 TM |
98 | unsigned long *count, |
99 | u32 *eof); | |
039a87ca | 100 | __be32 nfsd_read(struct svc_rqst *, struct svc_fh *, |
83a63072 TM |
101 | loff_t, struct kvec *, int, unsigned long *, |
102 | u32 *eof); | |
52e380e0 | 103 | __be32 nfsd_write(struct svc_rqst *, struct svc_fh *, loff_t, |
19e0663f TM |
104 | struct kvec *, int, unsigned long *, |
105 | int stable, __be32 *verf); | |
af90f707 | 106 | __be32 nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, |
16f8f894 | 107 | struct nfsd_file *nf, loff_t offset, |
af90f707 | 108 | struct kvec *vec, int vlen, unsigned long *cnt, |
19e0663f | 109 | int stable, __be32 *verf); |
0a3adade BF |
110 | __be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *, |
111 | char *, int *); | |
112 | __be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *, | |
52ee0433 | 113 | char *name, int len, char *path, |
1e444f5b | 114 | struct svc_fh *res); |
0a3adade BF |
115 | __be32 nfsd_link(struct svc_rqst *, struct svc_fh *, |
116 | char *, int, struct svc_fh *); | |
29ae7f9d AS |
117 | ssize_t nfsd_copy_file_range(struct file *, u64, |
118 | struct file *, u64, u64); | |
0a3adade BF |
119 | __be32 nfsd_rename(struct svc_rqst *, |
120 | struct svc_fh *, char *, int, | |
121 | struct svc_fh *, char *, int); | |
0a3adade BF |
122 | __be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type, |
123 | char *name, int len); | |
0a3adade | 124 | __be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *, |
ac7576f4 | 125 | loff_t *, struct readdir_cd *, nfsd_filldir_t); |
0a3adade BF |
126 | __be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *, |
127 | struct kstatfs *, int access); | |
128 | ||
0a3adade BF |
129 | __be32 nfsd_permission(struct svc_rqst *, struct svc_export *, |
130 | struct dentry *, int); | |
0a3adade | 131 | |
bad0dcff AV |
132 | static inline int fh_want_write(struct svc_fh *fh) |
133 | { | |
0b8f6262 | 134 | int ret; |
4a55c101 | 135 | |
0b8f6262 BF |
136 | if (fh->fh_want_write) |
137 | return 0; | |
138 | ret = mnt_want_write(fh->fh_export->ex_path.mnt); | |
4a55c101 | 139 | if (!ret) |
aaf91ec1 | 140 | fh->fh_want_write = true; |
4a55c101 | 141 | return ret; |
bad0dcff AV |
142 | } |
143 | ||
144 | static inline void fh_drop_write(struct svc_fh *fh) | |
145 | { | |
4a55c101 | 146 | if (fh->fh_want_write) { |
aaf91ec1 | 147 | fh->fh_want_write = false; |
4a55c101 JK |
148 | mnt_drop_write(fh->fh_export->ex_path.mnt); |
149 | } | |
bad0dcff AV |
150 | } |
151 | ||
907c3822 | 152 | static inline __be32 fh_getattr(const struct svc_fh *fh, struct kstat *stat) |
3dadecce AV |
153 | { |
154 | struct path p = {.mnt = fh->fh_export->ex_path.mnt, | |
155 | .dentry = fh->fh_dentry}; | |
a528d35e DH |
156 | return nfserrno(vfs_getattr(&p, stat, STATX_BASIC_STATS, |
157 | AT_STATX_SYNC_AS_STAT)); | |
3dadecce AV |
158 | } |
159 | ||
0a3adade | 160 | #endif /* LINUX_NFSD_VFS_H */ |