345 lines
15 KiB
C
345 lines
15 KiB
C
/****************************************************************************
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*
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* Open Watcom Project
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*
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* ========================================================================
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*
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* This file contains Original Code and/or Modifications of Original
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* Code as defined in and that are subject to the Sybase Open Watcom
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* Public License version 1.0 (the 'License'). You may not use this file
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* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
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* provided with the Original Code and Modifications, and is also
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* available at www.sybase.com/developer/opensource.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
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* NON-INFRINGEMENT. Please see the License for the specific language
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* governing rights and limitations under the License.
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*
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* ========================================================================
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*
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* Description: Implementation of strerror() function.
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*
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****************************************************************************/
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#include "variety.h"
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#include "widechar.h"
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#include <string.h>
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#include <errno.h>
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#include "rtdata.h"
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#if defined(__NT__)
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#include <windows.h>
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#endif
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#include "errstr.h"
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#ifndef __WIDECHAR__
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#ifdef __LINUX__
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char *_sys_errlist[] = {
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/* 0 EOK */ "No error",
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/* 1 EPERM */ "Operation not permitted",
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/* 2 ENOENT */ "No such file or directory",
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/* 3 ESRCH */ "No such process",
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/* 4 EINTR */ "Interrupted system call",
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/* 5 EIO */ "I/O error",
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/* 6 ENXIO */ "No such device or address",
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/* 7 E2BIG */ "Arg list too long",
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/* 8 ENOEXEC */ "Exec format error",
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/* 9 EBADF */ "Bad file number",
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/* 10 ECHILD */ "No child processes",
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/* 11 EAGAIN */ "Try again",
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/* 12 ENOMEM */ "Out of memory",
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/* 13 EACCES */ "Permission denied",
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/* 14 EFAULT */ "Bad address",
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/* 15 ENOTBLK */ "Block device required",
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/* 16 EBUSY */ "Device or resource busy",
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/* 17 EEXIST */ "File exists",
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/* 18 EXDEV */ "Cross-device link",
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/* 19 ENODEV */ "No such device",
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/* 20 ENOTDIR */ "Not a directory",
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/* 21 EISDIR */ "Is a directory",
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/* 22 EINVAL */ "Invalid argument",
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/* 23 ENFILE */ "File table overflow",
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/* 24 EMFILE */ "Too many open files",
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/* 25 ENOTTY */ "Not a typewriter",
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/* 26 ETXTBSY */ "Text file busy",
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/* 27 EFBIG */ "File too large",
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/* 28 ENOSPC */ "No space left on device",
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/* 29 ESPIPE */ "Illegal seek",
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/* 30 EROFS */ "Read-only file system",
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/* 31 EMLINK */ "Too many links",
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/* 32 EPIPE */ "Broken pipe",
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/* 33 EDOM */ "Math argument out of domain of func",
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/* 34 ERANGE */ "Math result not representable",
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/* 35 EDEADLK */ "Resource deadlock would occur",
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/* 36 ENAMETOOLONG */ "File name too long",
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/* 37 ENOLCK */ "No record locks available",
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/* 38 ENOSYS */ "Function not implemented",
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/* 39 ENOTEMPTY */ "Directory not empty",
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/* 40 ELOOP */ "Too many symbolic links encountered",
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/* 41 */ "",
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/* 42 ENOMSG */ "No message of desired type",
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/* 43 EIDRM */ "Identifier removed",
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/* 44 ECHRNG */ "Channel number out of range",
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/* 45 EL2NSYNC */ "Level 2 not synchronized",
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/* 46 EL3HLT */ "Level 3 halted",
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/* 47 EL3RST */ "Level 3 reset",
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/* 48 ELNRNG */ "Link number out of range",
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/* 49 EUNATCH */ "Protocol driver not attached",
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/* 50 ENOCSI */ "No CSI structure available",
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/* 51 EL2HLT */ "Level 2 halted",
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/* 52 EBADE */ "Invalid exchange",
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/* 53 EBADR */ "Invalid request descriptor",
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/* 54 EXFULL */ "Exchange full",
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/* 55 ENOANO */ "No anode",
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/* 56 EBADRQC */ "Invalid request code",
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/* 57 EBADSLT */ "Invalid slot",
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/* 58 */ "",
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/* 59 EBFONT */ "Bad font file format",
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/* 60 ENOSTR */ "Device not a stream",
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/* 61 ENODATA */ "No data available",
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/* 62 ETIME */ "Timer expired",
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/* 63 ENOSR */ "Out of streams resources",
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/* 64 ENONET */ "Machine is not on the network",
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/* 65 ENOPKG */ "Package not installed",
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/* 66 EREMOTE */ "Object is remote",
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/* 67 ENOLINK */ "Link has been severed",
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/* 68 EADV */ "Advertise error",
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/* 69 ESRMNT */ "Srmount error",
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/* 70 ECOMM */ "Communication error on send",
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/* 71 EPROTO */ "Protocol error",
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/* 72 EMULTIHOP */ "Multihop attempted",
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/* 73 EDOTDOT */ "RFS specific error",
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/* 74 EBADMSG */ "Not a data message",
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/* 75 EOVERFLOW */ "Value too large for defined data type",
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/* 76 ENOTUNIQ */ "Name not unique on network",
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/* 77 EBADFD */ "File descriptor in bad state",
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/* 78 EREMCHG */ "Remote address changed",
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/* 79 ELIBACC */ "Can not access a needed shared library",
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/* 80 ELIBBAD */ "Accessing a corrupted shared library",
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/* 81 ELIBSCN */ ".lib section in a.out corrupted",
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/* 82 ELIBMAX */ "Attempting to link in too many shared libraries",
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/* 83 ELIBEXEC */ "Cannot exec a shared library directly",
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/* 84 EILSEQ */ "Illegal byte sequence",
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/* 85 ERESTART */ "Interrupted system call should be restarted",
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/* 86 ESTRPIPE */ "Streams pipe error",
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/* 87 EUSERS */ "Too many users",
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/* 88 ENOTSOCK */ "Socket operation on non-socket",
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/* 89 EDESTADDRREQ */ "Destination address required",
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/* 90 EMSGSIZE */ "Message too long",
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/* 91 EPROTOTYPE */ "Protocol wrong type for socket",
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/* 92 ENOPROTOOPT */ "Protocol not available",
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/* 93 EPROTONOSUPPORT */ "Protocol not supported",
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/* 94 ESOCKTNOSUPPORT */ "Socket type not supported",
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/* 95 EOPNOTSUPP */ "Operation not supported on transport endpoint",
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/* 96 EPFNOSUPPORT */ "Protocol family not supported",
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/* 97 EAFNOSUPPORT */ "Address family not supported by protocol",
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/* 98 EADDRINUSE */ "Address already in use",
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/* 99 EADDRNOTAVAIL */ "Cannot assign requested address",
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/* 100 ENETDOWN */ "Network is down",
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/* 101 ENETUNREACH */ "Network is unreachable",
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/* 102 ENETRESET */ "Network dropped connection because of reset",
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/* 103 ECONNABORTED */ "Software caused connection abort",
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/* 104 ECONNRESET */ "Connection reset by peer",
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/* 105 ENOBUFS */ "No buffer space available",
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/* 106 EISCONN */ "Transport endpoint is already connected",
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/* 107 ENOTCONN */ "Transport endpoint is not connected",
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/* 108 ESHUTDOWN */ "Cannot send after transport endpoint shutdown",
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/* 109 ETOOMANYREFS */ "Too many references: cannot splice",
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/* 110 ETIMEDOUT */ "Connection timed out",
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/* 111 ECONNREFUSED */ "Connection refused",
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/* 112 EHOSTDOWN */ "Host is down",
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/* 113 EHOSTUNREACH */ "No route to host",
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/* 114 EALREADY */ "Operation already in progress",
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/* 115 EINPROGRESS */ "Operation now in progress",
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/* 116 ESTALE */ "Stale NFS file handle",
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/* 117 EUCLEAN */ "Structure needs cleaning",
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/* 118 ENOTNAM */ "Not a XENIX named type file",
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/* 119 ENAVAIL */ "No XENIX semaphores available",
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/* 120 EISNAM */ "Is a named type file",
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/* 121 EREMOTEIO */ "Remote I/O error",
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/* 122 EDQUOT */ "Quota exceeded",
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/* 121 */ "",
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/* 123 ENOMEDIUM */ "No medium found",
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/* 124 EMEDIUMTYPE */ "Wrong medium type"
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/* if more are added, be sure to update _sys_nerr accordingly */
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};
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#else
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char *_sys_errlist[] = {
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/* 0 EZERO */ "No error",
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/* 1 ENOENT */ "No such file or directory",
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/* 2 E2BIG */ "Arg list too big",
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/* 3 ENOEXEC */ "Exec format error",
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/* 4 EBADF */ "Bad file number",
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/* 5 ENOMEM */ "Not enough memory",
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/* 6 EACCES */ "Permission denied",
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/* 7 EEXIST */ "File exists",
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/* 8 EXDEV */ "Cross-device link",
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/* 9 EINVAL */ "Invalid argument",
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/* 10 ENFILE */ "File table overflow",
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/* 11 EMFILE */ "Too many open files",
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/* 12 ENOSPC */ "No space left on device",
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/* 13 EDOM */ "Argument too large",
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/* 14 ERANGE */ "Result too large",
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/* 15 EDEADLK */ "Resource deadlock would occur",
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/* 16 EINTR */ "System call interrupted",
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/* 17 ECHILD */ "Child does not exist",
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/* 18 EAGAIN */ "Resource unavailable, try again",
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/* 19 EBUSY */ "Device or resource busy",
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/* 20 EFBIG */ "File too large",
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/* 21 EIO */ "I/O error",
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/* 22 EISDIR */ "Is a directory",
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/* 23 ENOTDIR */ "Not a directory",
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/* 24 EMLINK */ "Too many links",
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/* 25 ENOTBLK */ "Block device required",
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/* 26 ENOTTY */ "Not a character device",
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/* 27 ENXIO */ "No such device or address",
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/* 28 EPERM */ "Not owner",
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/* 29 EPIPE */ "Broken pipe",
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/* 30 EROFS */ "Read-only file system",
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/* 31 ESPIPE */ "Illegal seek",
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/* 32 ESRCH */ "No such process",
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/* 33 ETXTBSY */ "Text file busy",
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/* 34 EFAULT */ "Bad address",
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/* 35 ENAMETOOLONG */ "Filename too long",
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/* 36 ENODEV */ "No such device",
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/* 37 ENOLCK */ "No locks available in system",
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/* 38 ENOSYS */ "Unknown system call",
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/* 39 ENOTEMPTY */ "Directory not empty",
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/* 40 EILSEQ */ "Illegal multibyte sequence"
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/* if more are added, be sure to update _sys_nerr accordingly */
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};
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#endif
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int _WCNEAR _sys_nerr = ( sizeof( _sys_errlist ) / sizeof( *_sys_errlist ) );
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#endif
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_WCRTLINK CHAR_TYPE *__F_NAME(strerror,wcserror)( int errnum )
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{
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#ifdef __WIDECHAR__
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static wchar_t Wide_Error_String[40];
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#endif
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char *msg;
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if( errnum < 0 || errnum >= _sys_nerr ) {
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msg = UNKNOWN_ERROR;
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} else {
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msg = _sys_errlist[ errnum ];
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}
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return( _AToUni( Wide_Error_String, msg ) );
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}
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// Note: Windows FORMAT_MESSAGE_MAX_WIDTH_MASK is 255
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#if !defined(FORMAT_MESSAGE_MAX_WIDTH_MASK)
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#define FORMAT_MESSAGE_MAX_WIDTH_MASK 255
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#endif
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#ifdef __WIDECHAR__
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static wchar_t Wide_Error_String[FORMAT_MESSAGE_MAX_WIDTH_MASK+1];
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#else
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static char Error_String[FORMAT_MESSAGE_MAX_WIDTH_MASK+1];
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#endif
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/*
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char *_strerror( const char *strErrMsg );
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Description from the MSDN:
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If strErrMsg is passed as NULL, _strerror returns a pointer to a
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string containing the system error message for the last library call
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that produced an error. The error-message string is terminated by
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the newline character ('\n'). If strErrMsg is not equal to NULL,
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then _strerror returns a pointer to a string containing (in order)
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your string message, a colon, a space, the system error message for
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the last library call producing an error, and a newline character.
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Your string message can be, at most, 94 bytes long.
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The actual error number for _strerror is stored in the variable
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errno. The system error messages are accessed through the variable
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_sys_errlist, which is an array of messages ordered by error number.
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_strerror accesses the appropriate error message by using the errno
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value as an index to the variable _sys_errlist. The value of the
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variable _sys_nerr is defined as the maximum number of elements in
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the _sys_errlist array. To produce accurate results, call _strerror
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immediately after a library routine returns with an error.
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Otherwise, subsequent calls to strerror or _strerror can overwrite
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the errno value.
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_strerror is not part of the ANSI definition but is instead a
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Microsoft extension to it. Do not use it where portability is
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desired; for ANSI compatibility, use strerror instead.
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*/
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_WCRTLINK CHAR_TYPE *__F_NAME(_strerror,_wcserror)( const CHAR_TYPE *strErrMsg )
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{
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int errnum;
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errnum = _RWD_errno;
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#ifdef __WIDECHAR__
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Wide_Error_String[0] = L'\0';
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if( strErrMsg != NULL ) {
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wcsncpy( Wide_Error_String, strErrMsg, 94 );
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Wide_Error_String[94] = L'\0'; // just in case more than 94
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wcscat( Wide_Error_String, L": " );
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}
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wcscat( Wide_Error_String, wcserror( errnum ) );
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wcscat( Wide_Error_String, L"\n" );
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return( Wide_Error_String );
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#else
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Error_String[0] = '\0';
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if( strErrMsg != NULL ) {
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strncpy( Error_String, strErrMsg, 94 );
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Error_String[94] = '\0'; // just in case more than 94
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strcat( Error_String, ": " );
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}
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strcat( Error_String, strerror( errnum ) );
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strcat( Error_String, "\n" );
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return( Error_String );
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#endif
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}
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#if defined(__NT__)
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_WCRTLINK CHAR_TYPE *__F_NAME(_doserror,_wdoserror)( int errnum )
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{
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#ifdef __WIDECHAR__
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Wide_Error_String[0] = L'\0';
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FormatMessageW( FORMAT_MESSAGE_IGNORE_INSERTS |
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FORMAT_MESSAGE_FROM_SYSTEM |
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FORMAT_MESSAGE_MAX_WIDTH_MASK,
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NULL,
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errnum,
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0,
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Wide_Error_String,
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FORMAT_MESSAGE_MAX_WIDTH_MASK,
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NULL );
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return( Wide_Error_String );
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#else
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Error_String[0] = '\0';
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FormatMessageA( FORMAT_MESSAGE_IGNORE_INSERTS |
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FORMAT_MESSAGE_FROM_SYSTEM |
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FORMAT_MESSAGE_MAX_WIDTH_MASK,
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NULL,
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errnum,
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0,
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Error_String,
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FORMAT_MESSAGE_MAX_WIDTH_MASK,
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NULL );
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return( Error_String );
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#endif
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}
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#endif
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