linux/include/linux/nfs.h
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   1/*
   2 * NFS protocol definitions
   3 *
   4 * This file contains constants mostly for Version 2 of the protocol,
   5 * but also has a couple of NFSv3 bits in (notably the error codes).
   6 */
   7#ifndef _LINUX_NFS_H
   8#define _LINUX_NFS_H
   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#define NFS_PIPE_DIRNAME "nfs"
  33
  34/*
  35 * NFS stats. The good thing with these values is that NFSv3 errors are
  36 * a superset of NFSv2 errors (with the exception of NFSERR_WFLUSH which
  37 * no-one uses anyway), so we can happily mix code as long as we make sure
  38 * no NFSv3 errors are returned to NFSv2 clients.
  39 * Error codes that have a `--' in the v2 column are not part of the
  40 * standard, but seem to be widely used nevertheless.
  41 */
  42 enum nfs_stat {
  43        NFS_OK = 0,                     /* v2 v3 v4 */
  44        NFSERR_PERM = 1,                /* v2 v3 v4 */
  45        NFSERR_NOENT = 2,               /* v2 v3 v4 */
  46        NFSERR_IO = 5,                  /* v2 v3 v4 */
  47        NFSERR_NXIO = 6,                /* v2 v3 v4 */
  48        NFSERR_EAGAIN = 11,             /* v2 v3 */
  49        NFSERR_ACCES = 13,              /* v2 v3 v4 */
  50        NFSERR_EXIST = 17,              /* v2 v3 v4 */
  51        NFSERR_XDEV = 18,               /*    v3 v4 */
  52        NFSERR_NODEV = 19,              /* v2 v3 v4 */
  53        NFSERR_NOTDIR = 20,             /* v2 v3 v4 */
  54        NFSERR_ISDIR = 21,              /* v2 v3 v4 */
  55        NFSERR_INVAL = 22,              /* v2 v3 v4 */
  56        NFSERR_FBIG = 27,               /* v2 v3 v4 */
  57        NFSERR_NOSPC = 28,              /* v2 v3 v4 */
  58        NFSERR_ROFS = 30,               /* v2 v3 v4 */
  59        NFSERR_MLINK = 31,              /*    v3 v4 */
  60        NFSERR_OPNOTSUPP = 45,          /* v2 v3 */
  61        NFSERR_NAMETOOLONG = 63,        /* v2 v3 v4 */
  62        NFSERR_NOTEMPTY = 66,           /* v2 v3 v4 */
  63        NFSERR_DQUOT = 69,              /* v2 v3 v4 */
  64        NFSERR_STALE = 70,              /* v2 v3 v4 */
  65        NFSERR_REMOTE = 71,             /* v2 v3 */
  66        NFSERR_WFLUSH = 99,             /* v2    */
  67        NFSERR_BADHANDLE = 10001,       /*    v3 v4 */
  68        NFSERR_NOT_SYNC = 10002,        /*    v3 */
  69        NFSERR_BAD_COOKIE = 10003,      /*    v3 v4 */
  70        NFSERR_NOTSUPP = 10004,         /*    v3 v4 */
  71        NFSERR_TOOSMALL = 10005,        /*    v3 v4 */
  72        NFSERR_SERVERFAULT = 10006,     /*    v3 v4 */
  73        NFSERR_BADTYPE = 10007,         /*    v3 v4 */
  74        NFSERR_JUKEBOX = 10008,         /*    v3 v4 */
  75        NFSERR_SAME = 10009,            /*       v4 */
  76        NFSERR_DENIED = 10010,          /*       v4 */
  77        NFSERR_EXPIRED = 10011,         /*       v4 */
  78        NFSERR_LOCKED = 10012,          /*       v4 */
  79        NFSERR_GRACE = 10013,           /*       v4 */
  80        NFSERR_FHEXPIRED = 10014,       /*       v4 */
  81        NFSERR_SHARE_DENIED = 10015,    /*       v4 */
  82        NFSERR_WRONGSEC = 10016,        /*       v4 */
  83        NFSERR_CLID_INUSE = 10017,      /*       v4 */
  84        NFSERR_RESOURCE = 10018,        /*       v4 */
  85        NFSERR_MOVED = 10019,           /*       v4 */
  86        NFSERR_NOFILEHANDLE = 10020,    /*       v4 */
  87        NFSERR_MINOR_VERS_MISMATCH = 10021,   /* v4 */
  88        NFSERR_STALE_CLIENTID = 10022,  /*       v4 */
  89        NFSERR_STALE_STATEID = 10023,   /*       v4 */
  90        NFSERR_OLD_STATEID = 10024,     /*       v4 */
  91        NFSERR_BAD_STATEID = 10025,     /*       v4 */  
  92        NFSERR_BAD_SEQID = 10026,       /*       v4 */
  93        NFSERR_NOT_SAME = 10027,        /*       v4 */
  94        NFSERR_LOCK_RANGE = 10028,      /*       v4 */
  95        NFSERR_SYMLINK = 10029,         /*       v4 */
  96        NFSERR_RESTOREFH = 10030,       /*       v4 */
  97        NFSERR_LEASE_MOVED = 10031,     /*       v4 */
  98        NFSERR_ATTRNOTSUPP = 10032,     /*       v4 */
  99        NFSERR_NO_GRACE = 10033,        /*       v4 */
 100        NFSERR_RECLAIM_BAD = 10034,     /*       v4 */
 101        NFSERR_RECLAIM_CONFLICT = 10035,/*       v4 */
 102        NFSERR_BAD_XDR = 10036,         /*       v4 */
 103        NFSERR_LOCKS_HELD = 10037,      /*       v4 */
 104        NFSERR_OPENMODE = 10038,       /*       v4 */
 105        NFSERR_BADOWNER = 10039,       /*       v4 */
 106        NFSERR_BADCHAR = 10040,        /*       v4 */
 107        NFSERR_BADNAME = 10041,        /*       v4 */
 108        NFSERR_BAD_RANGE = 10042,      /*       v4 */
 109        NFSERR_LOCK_NOTSUPP = 10043,   /*       v4 */
 110        NFSERR_OP_ILLEGAL = 10044,     /*       v4 */
 111        NFSERR_DEADLOCK = 10045,       /*       v4 */
 112        NFSERR_FILE_OPEN = 10046,      /*       v4 */
 113        NFSERR_ADMIN_REVOKED = 10047,  /*       v4 */
 114        NFSERR_CB_PATH_DOWN = 10048,   /*       v4 */
 115};
 116
 117/* NFSv2 file types - beware, these are not the same in NFSv3 */
 118
 119enum nfs_ftype {
 120        NFNON = 0,
 121        NFREG = 1,
 122        NFDIR = 2,
 123        NFBLK = 3,
 124        NFCHR = 4,
 125        NFLNK = 5,
 126        NFSOCK = 6,
 127        NFBAD = 7,
 128        NFFIFO = 8
 129};
 130
 131#ifdef __KERNEL__
 132#include <linux/sunrpc/msg_prot.h>
 133#include <linux/string.h>
 134
 135/*
 136 * This is the kernel NFS client file handle representation
 137 */
 138#define NFS_MAXFHSIZE           128
 139struct nfs_fh {
 140        unsigned short          size;
 141        unsigned char           data[NFS_MAXFHSIZE];
 142};
 143
 144/*
 145 * Returns a zero iff the size and data fields match.
 146 * Checks only "size" bytes in the data field.
 147 */
 148static inline int nfs_compare_fh(const struct nfs_fh *a, const struct nfs_fh *b)
 149{
 150        return a->size != b->size || memcmp(a->data, b->data, a->size) != 0;
 151}
 152
 153static inline void nfs_copy_fh(struct nfs_fh *target, const struct nfs_fh *source)
 154{
 155        target->size = source->size;
 156        memcpy(target->data, source->data, source->size);
 157}
 158
 159
 160/*
 161 * This is really a general kernel constant, but since nothing like
 162 * this is defined in the kernel headers, I have to do it here.
 163 */
 164#define NFS_OFFSET_MAX          ((__s64)((~(__u64)0) >> 1))
 165
 166
 167enum nfs3_stable_how {
 168        NFS_UNSTABLE = 0,
 169        NFS_DATA_SYNC = 1,
 170        NFS_FILE_SYNC = 2
 171};
 172#endif /* __KERNEL__ */
 173#endif /* _LINUX_NFS_H */
 174
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