include/linux/nfs.h

   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
 119 enum 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
 139 struct 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  */
 148 static 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
 153 static 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
 167 enum 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 */