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-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 }; 47 48 /** 49 * Return error message for an error code 50 * @return error message 51 */ 52 const char *nl_geterror(int error) 53 { 54 error = abs(error); 55 56 if (error > NLE_MAX) 57 error = NLE_FAILURE; 58 59 return errmsg[error]; 60 } 61 62 /** 63 * Print a libnl error message 64 * @arg s error message prefix 65 * 66 * Prints the error message of the call that failed last. 67 * 68 * If s is not NULL and *s is not a null byte the argument 69 * string is printed, followed by a colon and a blank. Then 70 * the error message and a new-line. 71 */ 72 void nl_perror(int error, const char *s) 73 { 74 if (s && *s) 75 fprintf(stderr, "%s: %s\n", s, nl_geterror(error)); 76 else 77 fprintf(stderr, "%s\n", nl_geterror(error)); 78 } 79 80 int nl_syserr2nlerr(int error) 81 { 82 error = abs(error); 83 84 switch (error) { 85 case EBADF: return NLE_BAD_SOCK; 86 case EADDRINUSE: return NLE_EXIST; 87 case EEXIST: return NLE_EXIST; 88 case EADDRNOTAVAIL: return NLE_NOADDR; 89 case ENOENT: return NLE_OBJ_NOTFOUND; 90 case EINTR: return NLE_INTR; 91 case EAGAIN: return NLE_AGAIN; 92 case ENOTSOCK: return NLE_BAD_SOCK; 93 case ENOPROTOOPT: return NLE_INVAL; 94 case EFAULT: return NLE_INVAL; 95 case EACCES: return NLE_NOACCESS; 96 case EINVAL: return NLE_INVAL; 97 case ENOBUFS: return NLE_NOMEM; 98 case ENOMEM: return NLE_NOMEM; 99 case EAFNOSUPPORT: return NLE_AF_NOSUPPORT; 100 case EPROTONOSUPPORT: return NLE_PROTO_MISMATCH; 101 case EOPNOTSUPP: return NLE_OPNOTSUPP; 102 case EPERM: return NLE_PERM; 103 case EBUSY: return NLE_BUSY; 104 case ERANGE: return NLE_RANGE; 105 default: return NLE_FAILURE; 106 } 107 } 108 109 /** @} */ 110 111
