package/libs/libnl-tiny/src/error.c

   1 /*
   2  * lib/error.c          Error Handling
   3  *
   4  *      This library is free software; you can redistribute it and/or
   5  *      modify it under the terms of the GNU Lesser General Public
   6  *      License as published by the Free Software Foundation version 2.1
   7  *      of the License.
   8  *
   9  * Copyright (c) 2008 Thomas Graf <tgraf@suug.ch>
  10  */
  11
  12 #include <netlink-local.h>
  13 #include <netlink/netlink.h>
  14
  15 static const char *errmsg[NLE_MAX+1] = {
  16 [NLE_SUCCESS]           = "Success",
  17 [NLE_FAILURE]           = "Unspecific failure",
  18 [NLE_INTR]              = "Interrupted system call",
  19 [NLE_BAD_SOCK]          = "Bad socket",
  20 [NLE_AGAIN]             = "Try again",
  21 [NLE_NOMEM]             = "Out of memory",
  22 [NLE_EXIST]             = "Object exists",
  23 [NLE_INVAL]             = "Invalid input data or parameter",
  24 [NLE_RANGE]             = "Input data out of range",
  25 [NLE_MSGSIZE]           = "Message size not sufficient",
  26 [NLE_OPNOTSUPP]         = "Operation not supported",
  27 [NLE_AF_NOSUPPORT]      = "Address family not supported",
  28 [NLE_OBJ_NOTFOUND]      = "Object not found",
  29 [NLE_NOATTR]            = "Attribute not available",
  30 [NLE_MISSING_ATTR]      = "Missing attribute",
  31 [NLE_AF_MISMATCH]       = "Address family mismatch",
  32 [NLE_SEQ_MISMATCH]      = "Message sequence number mismatch",
  33 [NLE_MSG_OVERFLOW]      = "Kernel reported message overflow",
  34 [NLE_MSG_TRUNC]         = "Kernel reported truncated message",
  35 [NLE_NOADDR]            = "Invalid address for specified address family",
  36 [NLE_SRCRT_NOSUPPORT]   = "Source based routing not supported",
  37 [NLE_MSG_TOOSHORT]      = "Netlink message is too short",
  38 [NLE_MSGTYPE_NOSUPPORT] = "Netlink message type is not supported",
  39 [NLE_OBJ_MISMATCH]      = "Object type does not match cache",
  40 [NLE_NOCACHE]           = "Unknown or invalid cache type",
  41 [NLE_BUSY]              = "Object busy",
  42 [NLE_PROTO_MISMATCH]    = "Protocol mismatch",
  43 [NLE_NOACCESS]          = "No Access",
  44 [NLE_PERM]              = "Operation not permitted",
  45 [NLE_PKTLOC_FILE]       = "Unable to open packet location file",
  46 [NLE_PARSE_ERR]         = "Unable to parse object",
  47 [NLE_NODEV]             = "No such device",
  48 [NLE_IMMUTABLE]         = "Immutable attribute",
  49 [NLE_DUMP_INTR]         = "Dump inconsistency detected, interrupted",
  50 };
  51
  52 /**
  53  * Return error message for an error code
  54  * @return error message
  55  */
  56 const char *nl_geterror(int error)
  57 {
  58         error = abs(error);
  59
  60         if (error > NLE_MAX)
  61                 error = NLE_FAILURE;
  62
  63         return errmsg[error];
  64 }
  65
  66 /**
  67  * Print a libnl error message
  68  * @arg s               error message prefix
  69  *
  70  * Prints the error message of the call that failed last.
  71  *
  72  * If s is not NULL and *s is not a null byte the argument
  73  * string is printed, followed by a colon and a blank. Then
  74  * the error message and a new-line.
  75  */
  76 void nl_perror(int error, const char *s)
  77 {
  78         if (s && *s)
  79                 fprintf(stderr, "%s: %s\n", s, nl_geterror(error));
  80         else
  81                 fprintf(stderr, "%s\n", nl_geterror(error));
  82 }
  83
  84 int nl_syserr2nlerr(int error)
  85 {
  86         error = abs(error);
  87
  88         switch (error) {
  89         case EBADF:             return NLE_BAD_SOCK;
  90         case EADDRINUSE:        return NLE_EXIST;
  91         case EEXIST:            return NLE_EXIST;
  92         case EADDRNOTAVAIL:     return NLE_NOADDR;
  93         case ESRCH:             /* fall through */
  94         case ENOENT:            return NLE_OBJ_NOTFOUND;
  95         case EINTR:             return NLE_INTR;
  96         case EAGAIN:            return NLE_AGAIN;
  97         case ENOTSOCK:          return NLE_BAD_SOCK;
  98         case ENOPROTOOPT:       return NLE_INVAL;
  99         case EFAULT:            return NLE_INVAL;
 100         case EACCES:            return NLE_NOACCESS;
 101         case EINVAL:            return NLE_INVAL;
 102         case ENOBUFS:           return NLE_NOMEM;
 103         case ENOMEM:            return NLE_NOMEM;
 104         case EAFNOSUPPORT:      return NLE_AF_NOSUPPORT;
 105         case EPROTONOSUPPORT:   return NLE_PROTO_MISMATCH;
 106         case EOPNOTSUPP:        return NLE_OPNOTSUPP;
 107         case EPERM:             return NLE_PERM;
 108         case EBUSY:             return NLE_BUSY;
 109         case ERANGE:            return NLE_RANGE;
 110         case ENODEV:            return NLE_NODEV;
 111         default:                return NLE_FAILURE;
 112         }
 113 }
 114
 115 /** @} */
 116