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
11 #include <linux/sunrpc/msg_prot.h> 10 #include <linux/sunrpc/msg_prot.h>
12 #include <linux/string.h> <<
13 #include <linux/crc32.h> <<
14 #include <uapi/linux/nfs.h> <<
15 11
>> 12 #define NFS_PROGRAM 100003
>> 13 #define NFS_PORT 2049
>> 14 #define NFS_MAXDATA 8192
>> 15 #define NFS_MAXPATHLEN 1024
>> 16 #define NFS_MAXNAMLEN 255
>> 17 #define NFS_MAXGROUPS 16
>> 18 #define NFS_FHSIZE 32
>> 19 #define NFS_COOKIESIZE 4
>> 20 #define NFS_FIFO_DEV (-1)
>> 21 #define NFSMODE_FMT 0170000
>> 22 #define NFSMODE_DIR 0040000
>> 23 #define NFSMODE_CHR 0020000
>> 24 #define NFSMODE_BLK 0060000
>> 25 #define NFSMODE_REG 0100000
>> 26 #define NFSMODE_LNK 0120000
>> 27 #define NFSMODE_SOCK 0140000
>> 28 #define NFSMODE_FIFO 0010000
>> 29
>> 30 #define NFS_MNT_PROGRAM 100005
>> 31 #define NFS_MNT_PORT 627
>> 32
>> 33 #define NFS_MAJOR UNNAMED_MAJOR
>> 34 #define NFS_MINOR 0xff
>> 35
>> 36 /*
>> 37 * NFS stats. The good thing with these values is that NFSv3 errors are
>> 38 * a superset of NFSv2 errors (with the exception of NFSERR_WFLUSH which
>> 39 * no-one uses anyway), so we can happily mix code as long as we make sure
>> 40 * no NFSv3 errors are returned to NFSv2 clients.
>> 41 * Error codes that have a `--' in the v2 column are not part of the
>> 42 * standard, but seem to be widely used nevertheless.
>> 43 */
>> 44 enum nfs_stat {
>> 45 NFS_OK = 0, /* v2 v3 */
>> 46 NFSERR_PERM = 1, /* v2 v3 */
>> 47 NFSERR_NOENT = 2, /* v2 v3 */
>> 48 NFSERR_IO = 5, /* v2 v3 */
>> 49 NFSERR_NXIO = 6, /* v2 v3 */
>> 50 NFSERR_EAGAIN = 11, /* v2 v3 */
>> 51 NFSERR_ACCES = 13, /* v2 v3 */
>> 52 NFSERR_EXIST = 17, /* v2 v3 */
>> 53 NFSERR_XDEV = 18, /* v3 */
>> 54 NFSERR_NODEV = 19, /* v2 v3 */
>> 55 NFSERR_NOTDIR = 20, /* v2 v3 */
>> 56 NFSERR_ISDIR = 21, /* v2 v3 */
>> 57 NFSERR_INVAL = 22, /* v2 v3 that Sun forgot */
>> 58 NFSERR_FBIG = 27, /* v2 v3 */
>> 59 NFSERR_NOSPC = 28, /* v2 v3 */
>> 60 NFSERR_ROFS = 30, /* v2 v3 */
>> 61 NFSERR_MLINK = 31, /* v3 */
>> 62 NFSERR_OPNOTSUPP = 45, /* v2 v3 */
>> 63 NFSERR_NAMETOOLONG = 63, /* v2 v3 */
>> 64 NFSERR_NOTEMPTY = 66, /* v2 v3 */
>> 65 NFSERR_DQUOT = 69, /* v2 v3 */
>> 66 NFSERR_STALE = 70, /* v2 v3 */
>> 67 NFSERR_REMOTE = 71, /* v2 v3 */
>> 68 NFSERR_WFLUSH = 99, /* v2 */
>> 69 NFSERR_BADHANDLE = 10001, /* v3 */
>> 70 NFSERR_NOT_SYNC = 10002, /* v3 */
>> 71 NFSERR_BAD_COOKIE = 10003, /* v3 */
>> 72 NFSERR_NOTSUPP = 10004, /* v3 */
>> 73 NFSERR_TOOSMALL = 10005, /* v3 */
>> 74 NFSERR_SERVERFAULT = 10006, /* v3 */
>> 75 NFSERR_BADTYPE = 10007, /* v3 */
>> 76 NFSERR_JUKEBOX = 10008 /* v3 */
>> 77 };
>> 78
>> 79 /* NFSv2 file types - beware, these are not the same in NFSv3 */
>> 80
>> 81 enum nfs_ftype {
>> 82 NFNON = 0,
>> 83 NFREG = 1,
>> 84 NFDIR = 2,
>> 85 NFBLK = 3,
>> 86 NFCHR = 4,
>> 87 NFLNK = 5,
>> 88 NFSOCK = 6,
>> 89 NFBAD = 7,
>> 90 NFFIFO = 8
>> 91 };
>> 92
>> 93 #if defined(__KERNEL__)
16 /* 94 /*
17 * This is the kernel NFS client file handle r 95 * This is the kernel NFS client file handle representation
18 */ 96 */
19 #define NFS_MAXFHSIZE 128 !! 97 #define NFS_MAXFHSIZE 64
20 struct nfs_fh { 98 struct nfs_fh {
21 unsigned short size; 99 unsigned short size;
22 unsigned char data[NFS_MAXFH 100 unsigned char data[NFS_MAXFHSIZE];
23 }; 101 };
24 102
25 /* 103 /*
26 * Returns a zero iff the size and data fields !! 104 * This is really a general kernel constant, but since nothing like
27 * Checks only "size" bytes in the data field. !! 105 * this is defined in the kernel headers, I have to do it here.
28 */ 106 */
29 static inline int nfs_compare_fh(const struct !! 107 #define NFS_OFFSET_MAX ((__s64)((~(__u64)0) >> 1))
30 { !! 108
31 return a->size != b->size || memcmp(a- <<
32 } <<
33 <<
34 static inline void nfs_copy_fh(struct nfs_fh * <<
35 { <<
36 target->size = source->size; <<
37 memcpy(target->data, source->data, sou <<
38 } <<
39 109
40 enum nfs3_stable_how { 110 enum nfs3_stable_how {
41 NFS_UNSTABLE = 0, 111 NFS_UNSTABLE = 0,
42 NFS_DATA_SYNC = 1, 112 NFS_DATA_SYNC = 1,
43 NFS_FILE_SYNC = 2, !! 113 NFS_FILE_SYNC = 2
44 <<
45 /* used by direct.c to mark verf as in <<
46 NFS_INVALID_STABLE_HOW = -1 <<
47 }; 114 };
48 !! 115 #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 */ 116 #endif /* _LINUX_NFS_H */
68 117
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