/** * nfs_stat_to_errno - convert an NFS status code to a local errno * @status: NFS status code to convert * * Returns a local errno value, or -EIO if the NFS status code is * not recognized. This function is used jointly by NFSv2 and NFSv3.
*/ int nfs_stat_to_errno(enum nfs_stat status)
{ int i;
for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) { if (nfs_errtbl[i].stat == (int)status) return nfs_errtbl[i].errno;
} return -EIO;
}
EXPORT_SYMBOL_GPL(nfs_stat_to_errno);
/* * We need to translate between nfs v4 status return values and * the local errno values which may not be the same. * * nfs4_errtbl_common[] is used before more specialized mappings * available in nfs4_errtbl[] or nfs4_errtbl_localio[].
*/ staticconststruct { int stat; int errno;
} nfs4_errtbl_common[] = {
{ NFS4_OK, 0 },
{ NFS4ERR_PERM, -EPERM },
{ NFS4ERR_NOENT, -ENOENT },
{ NFS4ERR_IO, -EIO },
{ NFS4ERR_NXIO, -ENXIO },
{ NFS4ERR_ACCESS, -EACCES },
{ NFS4ERR_EXIST, -EEXIST },
{ NFS4ERR_XDEV, -EXDEV },
{ NFS4ERR_NOTDIR, -ENOTDIR },
{ NFS4ERR_ISDIR, -EISDIR },
{ NFS4ERR_INVAL, -EINVAL },
{ NFS4ERR_FBIG, -EFBIG },
{ NFS4ERR_NOSPC, -ENOSPC },
{ NFS4ERR_ROFS, -EROFS },
{ NFS4ERR_MLINK, -EMLINK },
{ NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
{ NFS4ERR_NOTEMPTY, -ENOTEMPTY },
{ NFS4ERR_DQUOT, -EDQUOT },
{ NFS4ERR_STALE, -ESTALE },
{ NFS4ERR_BADHANDLE, -EBADHANDLE },
{ NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
{ NFS4ERR_NOTSUPP, -ENOTSUPP },
{ NFS4ERR_TOOSMALL, -ETOOSMALL },
{ NFS4ERR_BADTYPE, -EBADTYPE },
{ NFS4ERR_SYMLINK, -ELOOP },
{ NFS4ERR_DEADLOCK, -EDEADLK },
};
/* * Convert an NFS error code to a local one. * This one is used by NFSv4.
*/ int nfs4_stat_to_errno(int stat)
{ int i;
/* First check nfs4_errtbl_common */ for (i = 0; i < ARRAY_SIZE(nfs4_errtbl_common); i++) { if (nfs4_errtbl_common[i].stat == stat) return nfs4_errtbl_common[i].errno;
} /* Then check nfs4_errtbl */ for (i = 0; i < ARRAY_SIZE(nfs4_errtbl); i++) { if (nfs4_errtbl[i].stat == stat) return nfs4_errtbl[i].errno;
} if (stat <= 10000 || stat > 10100) { /* The server is looney tunes. */ return -EREMOTEIO;
} /* If we cannot translate the error, the recovery routines should * handle it. * Note: remaining NFSv4 error codes have values > 10000, so should * not conflict with native Linux error codes.
*/ return -stat;
}
EXPORT_SYMBOL_GPL(nfs4_stat_to_errno);
/* * This table is useful for conversion from local errno to NFS error. * It provides more logically correct mappings for use with LOCALIO * (which is focused on converting from errno to NFS status).
*/ staticconststruct { int stat; int errno;
} nfs4_errtbl_localio[] = { /* Map errors differently than nfs4_errtbl */
{ NFS4ERR_IO, -EREMOTEIO },
{ NFS4ERR_DELAY, -EAGAIN },
{ NFS4ERR_FBIG, -E2BIG }, /* Map errors not handled by nfs4_errtbl */
{ NFS4ERR_STALE, -EBADF },
{ NFS4ERR_STALE, -EOPENSTALE },
{ NFS4ERR_DELAY, -ETIMEDOUT },
{ NFS4ERR_DELAY, -ERESTARTSYS },
{ NFS4ERR_DELAY, -ENOMEM },
{ NFS4ERR_IO, -ETXTBSY },
{ NFS4ERR_IO, -EBUSY },
{ NFS4ERR_SERVERFAULT, -ESERVERFAULT },
{ NFS4ERR_SERVERFAULT, -ENFILE },
{ NFS4ERR_IO, -EUCLEAN },
{ NFS4ERR_PERM, -ENOKEY },
};
/* * Convert an errno to an NFS error code for LOCALIO.
*/
__u32 nfs_localio_errno_to_nfs4_stat(int errno)
{ int i;
/* First check nfs4_errtbl_common */ for (i = 0; i < ARRAY_SIZE(nfs4_errtbl_common); i++) { if (nfs4_errtbl_common[i].errno == errno) return nfs4_errtbl_common[i].stat;
} /* Then check nfs4_errtbl_localio */ for (i = 0; i < ARRAY_SIZE(nfs4_errtbl_localio); i++) { if (nfs4_errtbl_localio[i].errno == errno) return nfs4_errtbl_localio[i].stat;
} /* If we cannot translate the error, the recovery routines should * handle it. * Note: remaining NFSv4 error codes have values > 10000, so should * not conflict with native Linux error codes.
*/ return NFS4ERR_SERVERFAULT;
}
EXPORT_SYMBOL_GPL(nfs_localio_errno_to_nfs4_stat);
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