821 lines
20 KiB
C
821 lines
20 KiB
C
/* Extended support for using errno values.
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Copyright (C) 1992 Free Software Foundation, Inc.
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Written by Fred Fish. fnf@cygnus.com
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This file is part of the libiberty library.
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Libiberty is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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Libiberty is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with libiberty; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#ifndef lint
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static char rcsid[] = "$Id: strerror.c,v 1.2 1993/08/02 17:23:53 mycroft Exp $";
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#endif /* not lint */
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#include "config.h"
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#include <stdio.h>
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#ifndef NEED_sys_errlist
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/* Note that errno.h might declare sys_errlist in a way that the
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* compiler might consider incompatible with our later declaration,
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* perhaps by using const attributes. So we hide the declaration
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* in errno.h (if any) using a macro. */
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#define sys_errlist sys_errlist__
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#endif
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#include <errno.h>
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#ifndef NEED_sys_errlist
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#undef sys_errlist
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#endif
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/* Routines imported from standard C runtime libraries. */
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#ifdef __STDC__
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#include <stddef.h>
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extern void *malloc (size_t size); /* 4.10.3.3 */
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extern void *memset (void *s, int c, size_t n); /* 4.11.6.1 */
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#else /* !__STDC__ */
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#ifndef const
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#define const
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#endif
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extern char *malloc (); /* Standard memory allocater */
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extern char *memset ();
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#endif /* __STDC__ */
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#ifndef NULL
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# ifdef __STDC__
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# define NULL (void *) 0
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# else
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# define NULL 0
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# endif
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#endif
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#ifndef MAX
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# define MAX(a,b) ((a) > (b) ? (a) : (b))
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#endif
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/* Translation table for errno values. See intro(2) in most UNIX systems
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Programmers Reference Manuals.
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Note that this table is generally only accessed when it is used at runtime
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to initialize errno name and message tables that are indexed by errno
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value.
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Not all of these errnos will exist on all systems. This table is the only
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thing that should have to be updated as new error numbers are introduced.
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It's sort of ugly, but at least its portable. */
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struct error_info
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{
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int value; /* The numeric value from <errno.h> */
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char *name; /* The equivalent symbolic value */
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char *msg; /* Short message about this value */
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};
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static const struct error_info error_table[] =
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{
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#if defined (EPERM)
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EPERM, "EPERM", "Not owner",
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#endif
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#if defined (ENOENT)
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ENOENT, "ENOENT", "No such file or directory",
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#endif
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#if defined (ESRCH)
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ESRCH, "ESRCH", "No such process",
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#endif
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#if defined (EINTR)
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EINTR, "EINTR", "Interrupted system call",
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#endif
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#if defined (EIO)
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EIO, "EIO", "I/O error",
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#endif
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#if defined (ENXIO)
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ENXIO, "ENXIO", "No such device or address",
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#endif
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#if defined (E2BIG)
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E2BIG, "E2BIG", "Arg list too long",
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#endif
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#if defined (ENOEXEC)
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ENOEXEC, "ENOEXEC", "Exec format error",
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#endif
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#if defined (EBADF)
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EBADF, "EBADF", "Bad file number",
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#endif
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#if defined (ECHILD)
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ECHILD, "ECHILD", "No child processes",
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#endif
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#if defined (EWOULDBLOCK) /* Put before EAGAIN, sometimes aliased */
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EWOULDBLOCK, "EWOULDBLOCK", "Operation would block",
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#endif
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#if defined (EAGAIN)
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EAGAIN, "EAGAIN", "No more processes",
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#endif
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#if defined (ENOMEM)
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ENOMEM, "ENOMEM", "Not enough space",
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#endif
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#if defined (EACCES)
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EACCES, "EACCES", "Permission denied",
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#endif
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#if defined (EFAULT)
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EFAULT, "EFAULT", "Bad address",
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#endif
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#if defined (ENOTBLK)
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ENOTBLK, "ENOTBLK", "Block device required",
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#endif
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#if defined (EBUSY)
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EBUSY, "EBUSY", "Device busy",
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#endif
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#if defined (EEXIST)
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EEXIST, "EEXIST", "File exists",
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#endif
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#if defined (EXDEV)
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EXDEV, "EXDEV", "Cross-device link",
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#endif
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#if defined (ENODEV)
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ENODEV, "ENODEV", "No such device",
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#endif
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#if defined (ENOTDIR)
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ENOTDIR, "ENOTDIR", "Not a directory",
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#endif
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#if defined (EISDIR)
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EISDIR, "EISDIR", "Is a directory",
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#endif
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#if defined (EINVAL)
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EINVAL, "EINVAL", "Invalid argument",
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#endif
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#if defined (ENFILE)
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ENFILE, "ENFILE", "File table overflow",
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#endif
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#if defined (EMFILE)
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EMFILE, "EMFILE", "Too many open files",
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#endif
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#if defined (ENOTTY)
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ENOTTY, "ENOTTY", "Not a typewriter",
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#endif
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#if defined (ETXTBSY)
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ETXTBSY, "ETXTBSY", "Text file busy",
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#endif
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#if defined (EFBIG)
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EFBIG, "EFBIG", "File too large",
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#endif
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#if defined (ENOSPC)
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ENOSPC, "ENOSPC", "No space left on device",
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#endif
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#if defined (ESPIPE)
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ESPIPE, "ESPIPE", "Illegal seek",
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#endif
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#if defined (EROFS)
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EROFS, "EROFS", "Read-only file system",
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#endif
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#if defined (EMLINK)
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EMLINK, "EMLINK", "Too many links",
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#endif
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#if defined (EPIPE)
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EPIPE, "EPIPE", "Broken pipe",
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#endif
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#if defined (EDOM)
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EDOM, "EDOM", "Math argument out of domain of func",
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#endif
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#if defined (ERANGE)
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ERANGE, "ERANGE", "Math result not representable",
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#endif
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#if defined (ENOMSG)
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ENOMSG, "ENOMSG", "No message of desired type",
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#endif
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#if defined (EIDRM)
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EIDRM, "EIDRM", "Identifier removed",
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#endif
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#if defined (ECHRNG)
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ECHRNG, "ECHRNG", "Channel number out of range",
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#endif
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#if defined (EL2NSYNC)
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EL2NSYNC, "EL2NSYNC", "Level 2 not synchronized",
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#endif
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#if defined (EL3HLT)
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EL3HLT, "EL3HLT", "Level 3 halted",
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#endif
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#if defined (EL3RST)
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EL3RST, "EL3RST", "Level 3 reset",
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#endif
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#if defined (ELNRNG)
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ELNRNG, "ELNRNG", "Link number out of range",
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#endif
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#if defined (EUNATCH)
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EUNATCH, "EUNATCH", "Protocol driver not attached",
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#endif
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#if defined (ENOCSI)
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ENOCSI, "ENOCSI", "No CSI structure available",
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#endif
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#if defined (EL2HLT)
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EL2HLT, "EL2HLT", "Level 2 halted",
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#endif
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#if defined (EDEADLK)
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EDEADLK, "EDEADLK", "Deadlock condition",
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#endif
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#if defined (ENOLCK)
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ENOLCK, "ENOLCK", "No record locks available",
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#endif
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#if defined (EBADE)
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EBADE, "EBADE", "Invalid exchange",
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#endif
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#if defined (EBADR)
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EBADR, "EBADR", "Invalid request descriptor",
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#endif
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#if defined (EXFULL)
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EXFULL, "EXFULL", "Exchange full",
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#endif
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#if defined (ENOANO)
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ENOANO, "ENOANO", "No anode",
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#endif
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#if defined (EBADRQC)
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EBADRQC, "EBADRQC", "Invalid request code",
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#endif
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#if defined (EBADSLT)
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EBADSLT, "EBADSLT", "Invalid slot",
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#endif
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#if defined (EDEADLOCK)
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EDEADLOCK, "EDEADLOCK", "File locking deadlock error",
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#endif
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#if defined (EBFONT)
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EBFONT, "EBFONT", "Bad font file format",
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#endif
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#if defined (ENOSTR)
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ENOSTR, "ENOSTR", "Device not a stream",
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#endif
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#if defined (ENODATA)
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ENODATA, "ENODATA", "No data available",
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#endif
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#if defined (ETIME)
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ETIME, "ETIME", "Timer expired",
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#endif
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#if defined (ENOSR)
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ENOSR, "ENOSR", "Out of streams resources",
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#endif
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#if defined (ENONET)
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ENONET, "ENONET", "Machine is not on the network",
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#endif
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#if defined (ENOPKG)
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ENOPKG, "ENOPKG", "Package not installed",
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#endif
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#if defined (EREMOTE)
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EREMOTE, "EREMOTE", "Object is remote",
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#endif
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#if defined (ENOLINK)
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ENOLINK, "ENOLINK", "Link has been severed",
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#endif
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#if defined (EADV)
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EADV, "EADV", "Advertise error",
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#endif
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#if defined (ESRMNT)
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ESRMNT, "ESRMNT", "Srmount error",
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#endif
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#if defined (ECOMM)
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ECOMM, "ECOMM", "Communication error on send",
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#endif
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#if defined (EPROTO)
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EPROTO, "EPROTO", "Protocol error",
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#endif
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#if defined (EMULTIHOP)
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EMULTIHOP, "EMULTIHOP", "Multihop attempted",
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#endif
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#if defined (EDOTDOT)
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EDOTDOT, "EDOTDOT", "RFS specific error",
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#endif
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#if defined (EBADMSG)
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EBADMSG, "EBADMSG", "Not a data message",
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#endif
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#if defined (ENAMETOOLONG)
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ENAMETOOLONG, "ENAMETOOLONG", "File name too long",
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#endif
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#if defined (EOVERFLOW)
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EOVERFLOW, "EOVERFLOW", "Value too large for defined data type",
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#endif
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#if defined (ENOTUNIQ)
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ENOTUNIQ, "ENOTUNIQ", "Name not unique on network",
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#endif
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#if defined (EBADFD)
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EBADFD, "EBADFD", "File descriptor in bad state",
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#endif
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#if defined (EREMCHG)
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EREMCHG, "EREMCHG", "Remote address changed",
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#endif
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#if defined (ELIBACC)
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ELIBACC, "ELIBACC", "Can not access a needed shared library",
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#endif
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#if defined (ELIBBAD)
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ELIBBAD, "ELIBBAD", "Accessing a corrupted shared library",
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#endif
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#if defined (ELIBSCN)
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ELIBSCN, "ELIBSCN", ".lib section in a.out corrupted",
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#endif
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#if defined (ELIBMAX)
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ELIBMAX, "ELIBMAX", "Attempting to link in too many shared libraries",
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#endif
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#if defined (ELIBEXEC)
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ELIBEXEC, "ELIBEXEC", "Cannot exec a shared library directly",
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#endif
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#if defined (EILSEQ)
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EILSEQ, "EILSEQ", "Illegal byte sequence",
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#endif
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#if defined (ENOSYS)
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ENOSYS, "ENOSYS", "Operation not applicable",
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#endif
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#if defined (ELOOP)
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ELOOP, "ELOOP", "Too many symbolic links encountered",
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#endif
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#if defined (ERESTART)
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ERESTART, "ERESTART", "Interrupted system call should be restarted",
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#endif
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#if defined (ESTRPIPE)
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ESTRPIPE, "ESTRPIPE", "Streams pipe error",
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#endif
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#if defined (ENOTEMPTY)
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ENOTEMPTY, "ENOTEMPTY", "Directory not empty",
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#endif
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#if defined (EUSERS)
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EUSERS, "EUSERS", "Too many users",
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#endif
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#if defined (ENOTSOCK)
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ENOTSOCK, "ENOTSOCK", "Socket operation on non-socket",
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#endif
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#if defined (EDESTADDRREQ)
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EDESTADDRREQ, "EDESTADDRREQ", "Destination address required",
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#endif
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#if defined (EMSGSIZE)
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EMSGSIZE, "EMSGSIZE", "Message too long",
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#endif
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#if defined (EPROTOTYPE)
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EPROTOTYPE, "EPROTOTYPE", "Protocol wrong type for socket",
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#endif
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#if defined (ENOPROTOOPT)
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ENOPROTOOPT, "ENOPROTOOPT", "Protocol not available",
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#endif
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#if defined (EPROTONOSUPPORT)
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EPROTONOSUPPORT, "EPROTONOSUPPORT", "Protocol not supported",
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#endif
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#if defined (ESOCKTNOSUPPORT)
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ESOCKTNOSUPPORT, "ESOCKTNOSUPPORT", "Socket type not supported",
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#endif
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#if defined (EOPNOTSUPP)
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EOPNOTSUPP, "EOPNOTSUPP", "Operation not supported on transport endpoint",
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#endif
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#if defined (EPFNOSUPPORT)
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EPFNOSUPPORT, "EPFNOSUPPORT", "Protocol family not supported",
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#endif
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#if defined (EAFNOSUPPORT)
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EAFNOSUPPORT, "EAFNOSUPPORT", "Address family not supported by protocol",
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#endif
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#if defined (EADDRINUSE)
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EADDRINUSE, "EADDRINUSE", "Address already in use",
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#endif
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#if defined (EADDRNOTAVAIL)
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EADDRNOTAVAIL, "EADDRNOTAVAIL","Cannot assign requested address",
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#endif
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#if defined (ENETDOWN)
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ENETDOWN, "ENETDOWN", "Network is down",
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#endif
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#if defined (ENETUNREACH)
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ENETUNREACH, "ENETUNREACH", "Network is unreachable",
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#endif
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#if defined (ENETRESET)
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ENETRESET, "ENETRESET", "Network dropped connection because of reset",
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#endif
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#if defined (ECONNABORTED)
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ECONNABORTED, "ECONNABORTED", "Software caused connection abort",
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#endif
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#if defined (ECONNRESET)
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ECONNRESET, "ECONNRESET", "Connection reset by peer",
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#endif
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#if defined (ENOBUFS)
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ENOBUFS, "ENOBUFS", "No buffer space available",
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#endif
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#if defined (EISCONN)
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EISCONN, "EISCONN", "Transport endpoint is already connected",
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#endif
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#if defined (ENOTCONN)
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ENOTCONN, "ENOTCONN", "Transport endpoint is not connected",
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#endif
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#if defined (ESHUTDOWN)
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ESHUTDOWN, "ESHUTDOWN", "Cannot send after transport endpoint shutdown",
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#endif
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#if defined (ETOOMANYREFS)
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ETOOMANYREFS, "ETOOMANYREFS", "Too many references: cannot splice",
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#endif
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#if defined (ETIMEDOUT)
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ETIMEDOUT, "ETIMEDOUT", "Connection timed out",
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#endif
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#if defined (ECONNREFUSED)
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ECONNREFUSED, "ECONNREFUSED", "Connection refused",
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#endif
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#if defined (EHOSTDOWN)
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EHOSTDOWN, "EHOSTDOWN", "Host is down",
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#endif
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#if defined (EHOSTUNREACH)
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EHOSTUNREACH, "EHOSTUNREACH", "No route to host",
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#endif
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#if defined (EALREADY)
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EALREADY, "EALREADY", "Operation already in progress",
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#endif
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#if defined (EINPROGRESS)
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EINPROGRESS, "EINPROGRESS", "Operation now in progress",
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#endif
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#if defined (ESTALE)
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ESTALE, "ESTALE", "Stale NFS file handle",
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#endif
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#if defined (EUCLEAN)
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EUCLEAN, "EUCLEAN", "Structure needs cleaning",
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#endif
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#if defined (ENOTNAM)
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ENOTNAM, "ENOTNAM", "Not a XENIX named type file",
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#endif
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#if defined (ENAVAIL)
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ENAVAIL, "ENAVAIL", "No XENIX semaphores available",
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#endif
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#if defined (EISNAM)
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EISNAM, "EISNAM", "Is a named type file",
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#endif
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#if defined (EREMOTEIO)
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EREMOTEIO, "EREMOTEIO", "Remote I/O error",
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#endif
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0, NULL, NULL
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};
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/* Translation table allocated and initialized at runtime. Indexed by the
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errno value to find the equivalent symbolic value. */
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static char **error_names;
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static int num_error_names = 0;
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/* Translation table allocated and initialized at runtime, if it does not
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already exist in the host environment. Indexed by the errno value to find
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the descriptive string.
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We don't export it for use in other modules because even though it has the
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same name, it differs from other implementations in that it is dynamically
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initialized rather than statically initialized. */
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#ifdef NEED_sys_errlist
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static int sys_nerr;
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static char **sys_errlist;
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#else
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extern int sys_nerr;
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extern char *sys_errlist[];
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#endif
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/*
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NAME
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init_error_tables -- initialize the name and message tables
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SYNOPSIS
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static void init_error_tables ();
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DESCRIPTION
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Using the error_table, which is initialized at compile time, generate
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the error_names and the sys_errlist (if needed) tables, which are
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indexed at runtime by a specific errno value.
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BUGS
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The initialization of the tables may fail under low memory conditions,
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in which case we don't do anything particularly useful, but we don't
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bomb either. Who knows, it might succeed at a later point if we free
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some memory in the meantime. In any case, the other routines know
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how to deal with lack of a table after trying to initialize it. This
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may or may not be considered to be a bug, that we don't specifically
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warn about this particular failure mode.
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*/
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|
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static void
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init_error_tables ()
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{
|
|
const struct error_info *eip;
|
|
int nbytes;
|
|
|
|
/* If we haven't already scanned the error_table once to find the maximum
|
|
errno value, then go find it now. */
|
|
|
|
if (num_error_names == 0)
|
|
{
|
|
for (eip = error_table; eip -> name != NULL; eip++)
|
|
{
|
|
if (eip -> value >= num_error_names)
|
|
{
|
|
num_error_names = eip -> value + 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Now attempt to allocate the error_names table, zero it out, and then
|
|
initialize it from the statically initialized error_table. */
|
|
|
|
if (error_names == NULL)
|
|
{
|
|
nbytes = num_error_names * sizeof (char *);
|
|
if ((error_names = (char **) malloc (nbytes)) != NULL)
|
|
{
|
|
memset (error_names, 0, nbytes);
|
|
for (eip = error_table; eip -> name != NULL; eip++)
|
|
{
|
|
error_names[eip -> value] = eip -> name;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef NEED_sys_errlist
|
|
|
|
/* Now attempt to allocate the sys_errlist table, zero it out, and then
|
|
initialize it from the statically initialized error_table. */
|
|
|
|
if (sys_errlist == NULL)
|
|
{
|
|
nbytes = num_error_names * sizeof (char *);
|
|
if ((sys_errlist = (char **) malloc (nbytes)) != NULL)
|
|
{
|
|
memset (sys_errlist, 0, nbytes);
|
|
sys_nerr = num_error_names;
|
|
for (eip = error_table; eip -> name != NULL; eip++)
|
|
{
|
|
sys_errlist[eip -> value] = eip -> msg;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
NAME
|
|
|
|
errno_max -- return the max errno value
|
|
|
|
SYNOPSIS
|
|
|
|
int errno_max ();
|
|
|
|
DESCRIPTION
|
|
|
|
Returns the maximum errno value for which a corresponding symbolic
|
|
name or message is available. Note that in the case where
|
|
we use the sys_errlist supplied by the system, it is possible for
|
|
there to be more symbolic names than messages, or vice versa.
|
|
In fact, the manual page for perror(3C) explicitly warns that one
|
|
should check the size of the table (sys_nerr) before indexing it,
|
|
since new error codes may be added to the system before they are
|
|
added to the table. Thus sys_nerr might be smaller than value
|
|
implied by the largest errno value defined in <errno.h>.
|
|
|
|
We return the maximum value that can be used to obtain a meaningful
|
|
symbolic name or message.
|
|
|
|
*/
|
|
|
|
int
|
|
errno_max ()
|
|
{
|
|
int maxsize;
|
|
|
|
if (error_names == NULL)
|
|
{
|
|
init_error_tables ();
|
|
}
|
|
maxsize = MAX (sys_nerr, num_error_names);
|
|
return (maxsize - 1);
|
|
}
|
|
|
|
#ifdef NEED_strerror
|
|
|
|
/*
|
|
|
|
NAME
|
|
|
|
strerror -- map an error number to an error message string
|
|
|
|
SYNOPSIS
|
|
|
|
char *strerror (int errnoval)
|
|
|
|
DESCRIPTION
|
|
|
|
Maps an errno number to an error message string, the contents of
|
|
which are implementation defined. On systems which have the external
|
|
variables sys_nerr and sys_errlist, these strings will be the same
|
|
as the ones used by perror().
|
|
|
|
If the supplied error number is within the valid range of indices
|
|
for the sys_errlist, but no message is available for the particular
|
|
error number, then returns the string "Error NUM", where NUM is the
|
|
error number.
|
|
|
|
If the supplied error number is not a valid index into sys_errlist,
|
|
returns NULL.
|
|
|
|
The returned string is only guaranteed to be valid only until the
|
|
next call to strerror.
|
|
|
|
*/
|
|
|
|
char *
|
|
strerror (errnoval)
|
|
int errnoval;
|
|
{
|
|
char *msg;
|
|
static char buf[32];
|
|
|
|
#ifdef NEED_sys_errlist
|
|
|
|
if (error_names == NULL)
|
|
{
|
|
init_error_tables ();
|
|
}
|
|
|
|
#endif
|
|
|
|
if ((errnoval < 0) || (errnoval >= sys_nerr))
|
|
{
|
|
/* Out of range, just return NULL */
|
|
msg = NULL;
|
|
}
|
|
else if ((sys_errlist == NULL) || (sys_errlist[errnoval] == NULL))
|
|
{
|
|
/* In range, but no sys_errlist or no entry at this index. */
|
|
sprintf (buf, "Error %d", errnoval);
|
|
msg = buf;
|
|
}
|
|
else
|
|
{
|
|
/* In range, and a valid message. Just return the message. */
|
|
msg = sys_errlist[errnoval];
|
|
}
|
|
|
|
return (msg);
|
|
}
|
|
|
|
#endif /* NEED_strerror */
|
|
|
|
|
|
/*
|
|
|
|
NAME
|
|
|
|
strerrno -- map an error number to a symbolic name string
|
|
|
|
SYNOPSIS
|
|
|
|
char *strerrno (int errnoval)
|
|
|
|
DESCRIPTION
|
|
|
|
Given an error number returned from a system call (typically
|
|
returned in errno), returns a pointer to a string containing the
|
|
symbolic name of that error number, as found in <errno.h>.
|
|
|
|
If the supplied error number is within the valid range of indices
|
|
for symbolic names, but no name is available for the particular
|
|
error number, then returns the string "Error NUM", where NUM is
|
|
the error number.
|
|
|
|
If the supplied error number is not within the range of valid
|
|
indices, then returns NULL.
|
|
|
|
BUGS
|
|
|
|
The contents of the location pointed to are only guaranteed to be
|
|
valid until the next call to strerrno.
|
|
|
|
*/
|
|
|
|
char *
|
|
strerrno (errnoval)
|
|
int errnoval;
|
|
{
|
|
char *name;
|
|
static char buf[32];
|
|
|
|
if (error_names == NULL)
|
|
{
|
|
init_error_tables ();
|
|
}
|
|
|
|
if ((errnoval < 0) || (errnoval >= num_error_names))
|
|
{
|
|
/* Out of range, just return NULL */
|
|
name = NULL;
|
|
}
|
|
else if ((error_names == NULL) || (error_names[errnoval] == NULL))
|
|
{
|
|
/* In range, but no error_names or no entry at this index. */
|
|
sprintf (buf, "Error %d", errnoval);
|
|
name = buf;
|
|
}
|
|
else
|
|
{
|
|
/* In range, and a valid name. Just return the name. */
|
|
name = error_names[errnoval];
|
|
}
|
|
|
|
return (name);
|
|
}
|
|
|
|
/*
|
|
|
|
NAME
|
|
|
|
strtoerrno -- map a symbolic errno name to a numeric value
|
|
|
|
SYNOPSIS
|
|
|
|
int strtoerrno (char *name)
|
|
|
|
DESCRIPTION
|
|
|
|
Given the symbolic name of a error number, map it to an errno value.
|
|
If no translation is found, returns 0.
|
|
|
|
*/
|
|
|
|
int
|
|
strtoerrno (name)
|
|
char *name;
|
|
{
|
|
int errnoval = 0;
|
|
|
|
if (name != NULL)
|
|
{
|
|
if (error_names == NULL)
|
|
{
|
|
init_error_tables ();
|
|
}
|
|
for (errnoval = 0; errnoval < num_error_names; errnoval++)
|
|
{
|
|
if ((error_names[errnoval] != NULL) &&
|
|
(strcmp (name, error_names[errnoval]) == 0))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
if (errnoval == num_error_names)
|
|
{
|
|
errnoval = 0;
|
|
}
|
|
}
|
|
return (errnoval);
|
|
}
|
|
|
|
|
|
/* A simple little main that does nothing but print all the errno translations
|
|
if MAIN is defined and this file is compiled and linked. */
|
|
|
|
#ifdef MAIN
|
|
|
|
main ()
|
|
{
|
|
int errn;
|
|
int errnmax;
|
|
char *name;
|
|
char *msg;
|
|
char *strerrno ();
|
|
char *strerror ();
|
|
|
|
errnmax = errno_max ();
|
|
printf ("%d entries in names table.\n", num_error_names);
|
|
printf ("%d entries in messages table.\n", sys_nerr);
|
|
printf ("%d is max useful index.\n", errnmax);
|
|
|
|
/* Keep printing values until we get to the end of *both* tables, not
|
|
*either* table. Note that knowing the maximum useful index does *not*
|
|
relieve us of the responsibility of testing the return pointer for
|
|
NULL. */
|
|
|
|
for (errn = 0; errn <= errnmax; errn++)
|
|
{
|
|
name = strerrno (errn);
|
|
name = (name == NULL) ? "<NULL>" : name;
|
|
msg = strerror (errn);
|
|
msg = (msg == NULL) ? "<NULL>" : msg;
|
|
printf ("%-4d%-18s%s\n", errn, name, msg);
|
|
}
|
|
}
|
|
|
|
#endif
|