fs/afs/misc.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* miscellaneous bits
   3  *
   4  * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
   5  * Written by David Howells (dhowells@redhat.com)
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/module.h>
  10 #include <linux/errno.h>
  11 #include "internal.h"
  12 #include "afs_fs.h"
  13
  14 /*
  15  * convert an AFS abort code to a Linux error number
  16  */
  17 int afs_abort_to_error(u32 abort_code)
  18 {
  19         switch (abort_code) {
  20                 /* Low errno codes inserted into abort namespace */
  21         case 13:                return -EACCES;
  22         case 27:                return -EFBIG;
  23         case 30:                return -EROFS;
  24
  25                 /* VICE "special error" codes; 101 - 111 */
  26         case VSALVAGE:          return -EIO;
  27         case VNOVNODE:          return -ENOENT;
  28         case VNOVOL:            return -ENOMEDIUM;
  29         case VVOLEXISTS:        return -EEXIST;
  30         case VNOSERVICE:        return -EIO;
  31         case VOFFLINE:          return -ENOENT;
  32         case VONLINE:           return -EEXIST;
  33         case VDISKFULL:         return -ENOSPC;
  34         case VOVERQUOTA:        return -EDQUOT;
  35         case VBUSY:             return -EBUSY;
  36         case VMOVED:            return -ENXIO;
  37
  38                 /* Volume Location server errors */
  39         case AFSVL_IDEXIST:             return -EEXIST;
  40         case AFSVL_IO:                  return -EREMOTEIO;
  41         case AFSVL_NAMEEXIST:           return -EEXIST;
  42         case AFSVL_CREATEFAIL:          return -EREMOTEIO;
  43         case AFSVL_NOENT:               return -ENOMEDIUM;
  44         case AFSVL_EMPTY:               return -ENOMEDIUM;
  45         case AFSVL_ENTDELETED:          return -ENOMEDIUM;
  46         case AFSVL_BADNAME:             return -EINVAL;
  47         case AFSVL_BADINDEX:            return -EINVAL;
  48         case AFSVL_BADVOLTYPE:          return -EINVAL;
  49         case AFSVL_BADSERVER:           return -EINVAL;
  50         case AFSVL_BADPARTITION:        return -EINVAL;
  51         case AFSVL_REPSFULL:            return -EFBIG;
  52         case AFSVL_NOREPSERVER:         return -ENOENT;
  53         case AFSVL_DUPREPSERVER:        return -EEXIST;
  54         case AFSVL_RWNOTFOUND:          return -ENOENT;
  55         case AFSVL_BADREFCOUNT:         return -EINVAL;
  56         case AFSVL_SIZEEXCEEDED:        return -EINVAL;
  57         case AFSVL_BADENTRY:            return -EINVAL;
  58         case AFSVL_BADVOLIDBUMP:        return -EINVAL;
  59         case AFSVL_IDALREADYHASHED:     return -EINVAL;
  60         case AFSVL_ENTRYLOCKED:         return -EBUSY;
  61         case AFSVL_BADVOLOPER:          return -EBADRQC;
  62         case AFSVL_BADRELLOCKTYPE:      return -EINVAL;
  63         case AFSVL_RERELEASE:           return -EREMOTEIO;
  64         case AFSVL_BADSERVERFLAG:       return -EINVAL;
  65         case AFSVL_PERM:                return -EACCES;
  66         case AFSVL_NOMEM:               return -EREMOTEIO;
  67
  68                 /* Unified AFS error table; ET "uae" == 0x2f6df00 */
  69         case 0x2f6df00:         return -EPERM;
  70         case 0x2f6df01:         return -ENOENT;
  71         case 0x2f6df04:         return -EIO;
  72         case 0x2f6df0a:         return -EAGAIN;
  73         case 0x2f6df0b:         return -ENOMEM;
  74         case 0x2f6df0c:         return -EACCES;
  75         case 0x2f6df0f:         return -EBUSY;
  76         case 0x2f6df10:         return -EEXIST;
  77         case 0x2f6df11:         return -EXDEV;
  78         case 0x2f6df12:         return -ENODEV;
  79         case 0x2f6df13:         return -ENOTDIR;
  80         case 0x2f6df14:         return -EISDIR;
  81         case 0x2f6df15:         return -EINVAL;
  82         case 0x2f6df1a:         return -EFBIG;
  83         case 0x2f6df1b:         return -ENOSPC;
  84         case 0x2f6df1d:         return -EROFS;
  85         case 0x2f6df1e:         return -EMLINK;
  86         case 0x2f6df20:         return -EDOM;
  87         case 0x2f6df21:         return -ERANGE;
  88         case 0x2f6df22:         return -EDEADLK;
  89         case 0x2f6df23:         return -ENAMETOOLONG;
  90         case 0x2f6df24:         return -ENOLCK;
  91         case 0x2f6df26:         return -ENOTEMPTY;
  92         case 0x2f6df28:         return -EWOULDBLOCK;
  93         case 0x2f6df69:         return -ENOTCONN;
  94         case 0x2f6df6c:         return -ETIMEDOUT;
  95         case 0x2f6df78:         return -EDQUOT;
  96
  97                 /* RXKAD abort codes; from include/rxrpc/packet.h.  ET "RXK" == 0x1260B00 */
  98         case RXKADINCONSISTENCY: return -EPROTO;
  99         case RXKADPACKETSHORT:  return -EPROTO;
 100         case RXKADLEVELFAIL:    return -EKEYREJECTED;
 101         case RXKADTICKETLEN:    return -EKEYREJECTED;
 102         case RXKADOUTOFSEQUENCE: return -EPROTO;
 103         case RXKADNOAUTH:       return -EKEYREJECTED;
 104         case RXKADBADKEY:       return -EKEYREJECTED;
 105         case RXKADBADTICKET:    return -EKEYREJECTED;
 106         case RXKADUNKNOWNKEY:   return -EKEYREJECTED;
 107         case RXKADEXPIRED:      return -EKEYEXPIRED;
 108         case RXKADSEALEDINCON:  return -EKEYREJECTED;
 109         case RXKADDATALEN:      return -EKEYREJECTED;
 110         case RXKADILLEGALLEVEL: return -EKEYREJECTED;
 111
 112         case RXGEN_OPCODE:      return -ENOTSUPP;
 113
 114         default:                return -EREMOTEIO;
 115         }
 116 }
 117
 118 /*
 119  * Select the error to report from a set of errors.
 120  */
 121 void afs_prioritise_error(struct afs_error *e, int error, u32 abort_code)
 122 {
 123         switch (error) {
 124         case 0:
 125                 return;
 126         default:
 127                 if (e->error == -ETIMEDOUT ||
 128                     e->error == -ETIME)
 129                         return;
 130                 /* Fall through */
 131         case -ETIMEDOUT:
 132         case -ETIME:
 133                 if (e->error == -ENOMEM ||
 134                     e->error == -ENONET)
 135                         return;
 136                 /* Fall through */
 137         case -ENOMEM:
 138         case -ENONET:
 139                 if (e->error == -ERFKILL)
 140                         return;
 141                 /* Fall through */
 142         case -ERFKILL:
 143                 if (e->error == -EADDRNOTAVAIL)
 144                         return;
 145                 /* Fall through */
 146         case -EADDRNOTAVAIL:
 147                 if (e->error == -ENETUNREACH)
 148                         return;
 149                 /* Fall through */
 150         case -ENETUNREACH:
 151                 if (e->error == -EHOSTUNREACH)
 152                         return;
 153                 /* Fall through */
 154         case -EHOSTUNREACH:
 155                 if (e->error == -EHOSTDOWN)
 156                         return;
 157                 /* Fall through */
 158         case -EHOSTDOWN:
 159                 if (e->error == -ECONNREFUSED)
 160                         return;
 161                 /* Fall through */
 162         case -ECONNREFUSED:
 163                 if (e->error == -ECONNRESET)
 164                         return;
 165                 /* Fall through */
 166         case -ECONNRESET: /* Responded, but call expired. */
 167                 if (e->responded)
 168                         return;
 169                 e->error = error;
 170                 return;
 171
 172         case -ECONNABORTED:
 173                 e->responded = true;
 174                 e->error = afs_abort_to_error(abort_code);
 175                 return;
 176         }
 177 }