1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 /* 1 /*
3 * NFS protocol definitions 2 * NFS protocol definitions
4 * 3 *
5 * This file contains constants mostly for Ver 4 * This file contains constants mostly for Version 2 of the protocol,
6 * but also has a couple of NFSv3 bits in (not 5 * but also has a couple of NFSv3 bits in (notably the error codes).
7 */ 6 */
8 #ifndef _LINUX_NFS_H 7 #ifndef _LINUX_NFS_H
9 #define _LINUX_NFS_H 8 #define _LINUX_NFS_H
10 9
>> 10 #define NFS_PROGRAM 100003
>> 11 #define NFS_PORT 2049
>> 12 #define NFS_MAXDATA 8192
>> 13 #define NFS_MAXPATHLEN 1024
>> 14 #define NFS_MAXNAMLEN 255
>> 15 #define NFS_MAXGROUPS 16
>> 16 #define NFS_FHSIZE 32
>> 17 #define NFS_COOKIESIZE 4
>> 18 #define NFS_FIFO_DEV (-1)
>> 19 #define NFSMODE_FMT 0170000
>> 20 #define NFSMODE_DIR 0040000
>> 21 #define NFSMODE_CHR 0020000
>> 22 #define NFSMODE_BLK 0060000
>> 23 #define NFSMODE_REG 0100000
>> 24 #define NFSMODE_LNK 0120000
>> 25 #define NFSMODE_SOCK 0140000
>> 26 #define NFSMODE_FIFO 0010000
>> 27
>> 28 #define NFS_MNT_PROGRAM 100005
>> 29 #define NFS_MNT_VERSION 1
>> 30 #define NFS_MNT3_VERSION 3
>> 31
>> 32 /*
>> 33 * NFS stats. The good thing with these values is that NFSv3 errors are
>> 34 * a superset of NFSv2 errors (with the exception of NFSERR_WFLUSH which
>> 35 * no-one uses anyway), so we can happily mix code as long as we make sure
>> 36 * no NFSv3 errors are returned to NFSv2 clients.
>> 37 * Error codes that have a `--' in the v2 column are not part of the
>> 38 * standard, but seem to be widely used nevertheless.
>> 39 */
>> 40 enum nfs_stat {
>> 41 NFS_OK = 0, /* v2 v3 v4 */
>> 42 NFSERR_PERM = 1, /* v2 v3 v4 */
>> 43 NFSERR_NOENT = 2, /* v2 v3 v4 */
>> 44 NFSERR_IO = 5, /* v2 v3 v4 */
>> 45 NFSERR_NXIO = 6, /* v2 v3 v4 */
>> 46 NFSERR_EAGAIN = 11, /* v2 v3 */
>> 47 NFSERR_ACCES = 13, /* v2 v3 v4 */
>> 48 NFSERR_EXIST = 17, /* v2 v3 v4 */
>> 49 NFSERR_XDEV = 18, /* v3 v4 */
>> 50 NFSERR_NODEV = 19, /* v2 v3 v4 */
>> 51 NFSERR_NOTDIR = 20, /* v2 v3 v4 */
>> 52 NFSERR_ISDIR = 21, /* v2 v3 v4 */
>> 53 NFSERR_INVAL = 22, /* v2 v3 v4 */
>> 54 NFSERR_FBIG = 27, /* v2 v3 v4 */
>> 55 NFSERR_NOSPC = 28, /* v2 v3 v4 */
>> 56 NFSERR_ROFS = 30, /* v2 v3 v4 */
>> 57 NFSERR_MLINK = 31, /* v3 v4 */
>> 58 NFSERR_OPNOTSUPP = 45, /* v2 v3 */
>> 59 NFSERR_NAMETOOLONG = 63, /* v2 v3 v4 */
>> 60 NFSERR_NOTEMPTY = 66, /* v2 v3 v4 */
>> 61 NFSERR_DQUOT = 69, /* v2 v3 v4 */
>> 62 NFSERR_STALE = 70, /* v2 v3 v4 */
>> 63 NFSERR_REMOTE = 71, /* v2 v3 */
>> 64 NFSERR_WFLUSH = 99, /* v2 */
>> 65 NFSERR_BADHANDLE = 10001, /* v3 v4 */
>> 66 NFSERR_NOT_SYNC = 10002, /* v3 */
>> 67 NFSERR_BAD_COOKIE = 10003, /* v3 v4 */
>> 68 NFSERR_NOTSUPP = 10004, /* v3 v4 */
>> 69 NFSERR_TOOSMALL = 10005, /* v3 v4 */
>> 70 NFSERR_SERVERFAULT = 10006, /* v3 v4 */
>> 71 NFSERR_BADTYPE = 10007, /* v3 v4 */
>> 72 NFSERR_JUKEBOX = 10008, /* v3 v4 */
>> 73 NFSERR_SAME = 10009, /* v4 */
>> 74 NFSERR_DENIED = 10010, /* v4 */
>> 75 NFSERR_EXPIRED = 10011, /* v4 */
>> 76 NFSERR_LOCKED = 10012, /* v4 */
>> 77 NFSERR_GRACE = 10013, /* v4 */
>> 78 NFSERR_FHEXPIRED = 10014, /* v4 */
>> 79 NFSERR_SHARE_DENIED = 10015, /* v4 */
>> 80 NFSERR_WRONGSEC = 10016, /* v4 */
>> 81 NFSERR_CLID_INUSE = 10017, /* v4 */
>> 82 NFSERR_RESOURCE = 10018, /* v4 */
>> 83 NFSERR_MOVED = 10019, /* v4 */
>> 84 NFSERR_NOFILEHANDLE = 10020, /* v4 */
>> 85 NFSERR_MINOR_VERS_MISMATCH = 10021, /* v4 */
>> 86 NFSERR_STALE_CLIENTID = 10022, /* v4 */
>> 87 NFSERR_STALE_STATEID = 10023, /* v4 */
>> 88 NFSERR_OLD_STATEID = 10024, /* v4 */
>> 89 NFSERR_BAD_STATEID = 10025, /* v4 */
>> 90 NFSERR_BAD_SEQID = 10026, /* v4 */
>> 91 NFSERR_NOT_SAME = 10027, /* v4 */
>> 92 NFSERR_LOCK_RANGE = 10028, /* v4 */
>> 93 NFSERR_SYMLINK = 10029, /* v4 */
>> 94 NFSERR_RESTOREFH = 10030, /* v4 */
>> 95 NFSERR_LEASE_MOVED = 10031, /* v4 */
>> 96 NFSERR_ATTRNOTSUPP = 10032, /* v4 */
>> 97 NFSERR_NO_GRACE = 10033, /* v4 */
>> 98 NFSERR_RECLAIM_BAD = 10034, /* v4 */
>> 99 NFSERR_RECLAIM_CONFLICT = 10035,/* v4 */
>> 100 NFSERR_BAD_XDR = 10036, /* v4 */
>> 101 NFSERR_LOCKS_HELD = 10037, /* v4 */
>> 102 NFSERR_OPENMODE = 10038, /* v4 */
>> 103 NFSERR_BADOWNER = 10039, /* v4 */
>> 104 NFSERR_BADCHAR = 10040, /* v4 */
>> 105 NFSERR_BADNAME = 10041, /* v4 */
>> 106 NFSERR_BAD_RANGE = 10042, /* v4 */
>> 107 NFSERR_LOCK_NOTSUPP = 10043, /* v4 */
>> 108 NFSERR_OP_ILLEGAL = 10044, /* v4 */
>> 109 NFSERR_DEADLOCK = 10045, /* v4 */
>> 110 NFSERR_FILE_OPEN = 10046, /* v4 */
>> 111 NFSERR_ADMIN_REVOKED = 10047, /* v4 */
>> 112 NFSERR_CB_PATH_DOWN = 10048, /* v4 */
>> 113 };
>> 114
>> 115 /* NFSv2 file types - beware, these are not the same in NFSv3 */
>> 116
>> 117 enum nfs_ftype {
>> 118 NFNON = 0,
>> 119 NFREG = 1,
>> 120 NFDIR = 2,
>> 121 NFBLK = 3,
>> 122 NFCHR = 4,
>> 123 NFLNK = 5,
>> 124 NFSOCK = 6,
>> 125 NFBAD = 7,
>> 126 NFFIFO = 8
>> 127 };
>> 128
>> 129 #ifdef __KERNEL__
11 #include <linux/sunrpc/msg_prot.h> 130 #include <linux/sunrpc/msg_prot.h>
12 #include <linux/string.h> 131 #include <linux/string.h>
13 #include <linux/crc32.h> <<
14 #include <uapi/linux/nfs.h> <<
15 132
16 /* 133 /*
17 * This is the kernel NFS client file handle r 134 * This is the kernel NFS client file handle representation
18 */ 135 */
19 #define NFS_MAXFHSIZE 128 136 #define NFS_MAXFHSIZE 128
20 struct nfs_fh { 137 struct nfs_fh {
21 unsigned short size; 138 unsigned short size;
22 unsigned char data[NFS_MAXFH 139 unsigned char data[NFS_MAXFHSIZE];
23 }; 140 };
24 141
25 /* 142 /*
26 * Returns a zero iff the size and data fields 143 * Returns a zero iff the size and data fields match.
27 * Checks only "size" bytes in the data field. 144 * Checks only "size" bytes in the data field.
28 */ 145 */
29 static inline int nfs_compare_fh(const struct 146 static inline int nfs_compare_fh(const struct nfs_fh *a, const struct nfs_fh *b)
30 { 147 {
31 return a->size != b->size || memcmp(a- 148 return a->size != b->size || memcmp(a->data, b->data, a->size) != 0;
32 } 149 }
33 150
34 static inline void nfs_copy_fh(struct nfs_fh * 151 static inline void nfs_copy_fh(struct nfs_fh *target, const struct nfs_fh *source)
35 { 152 {
36 target->size = source->size; 153 target->size = source->size;
37 memcpy(target->data, source->data, sou 154 memcpy(target->data, source->data, source->size);
38 } 155 }
39 156
>> 157
>> 158 /*
>> 159 * This is really a general kernel constant, but since nothing like
>> 160 * this is defined in the kernel headers, I have to do it here.
>> 161 */
>> 162 #define NFS_OFFSET_MAX ((__s64)((~(__u64)0) >> 1))
>> 163
>> 164
40 enum nfs3_stable_how { 165 enum nfs3_stable_how {
41 NFS_UNSTABLE = 0, 166 NFS_UNSTABLE = 0,
42 NFS_DATA_SYNC = 1, 167 NFS_DATA_SYNC = 1,
43 NFS_FILE_SYNC = 2, !! 168 NFS_FILE_SYNC = 2
44 <<
45 /* used by direct.c to mark verf as in <<
46 NFS_INVALID_STABLE_HOW = -1 <<
47 }; 169 };
48 !! 170 #endif /* __KERNEL__ */
49 #ifdef CONFIG_CRC32 <<
50 /** <<
51 * nfs_fhandle_hash - calculate the crc32 hash <<
52 * @fh - pointer to filehandle <<
53 * <<
54 * returns a crc32 hash for the filehandle tha <<
55 * the one displayed by "wireshark". <<
56 */ <<
57 static inline u32 nfs_fhandle_hash(const struc <<
58 { <<
59 return ~crc32_le(0xFFFFFFFF, &fh->data <<
60 } <<
61 #else /* CONFIG_CRC32 */ <<
62 static inline u32 nfs_fhandle_hash(const struc <<
63 { <<
64 return 0; <<
65 } <<
66 #endif /* CONFIG_CRC32 */ <<
67 #endif /* _LINUX_NFS_H */ 171 #endif /* _LINUX_NFS_H */
68 172
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