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 (at) suug.ch> 10 */ 11 12 #include <netlink-private/netlink.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 /** @} */ 116 117
