70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/* Copyright (C) 1993, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library 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 the GNU C Library; 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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#include <stdio.h>
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#include <string.h>
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#include <mach/error.h>
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#include <errorlib.h>
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#include "../stdio/_itoa.h"
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/* Return a string describing the errno code in ERRNUM. */
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char *
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_strerror_internal (int errnum, char buf[1024])
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{
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int system;
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int sub;
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int code;
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const struct error_system *es;
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extern void __mach_error_map_compat (int *);
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__mach_error_map_compat (&errnum);
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system = err_get_system (errnum);
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sub = err_get_sub (errnum);
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code = err_get_code (errnum);
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if (system > err_max_system || ! __mach_error_systems[system].bad_sub)
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{
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static const char unk[] = "Error in unknown error system: ";
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char *p = buf + sizeof buf;
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*p-- = '\0';
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p = _itoa (errnum, p, 16, 1);
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p -= sizeof unk - 1;
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return memcpy (p, unk, sizeof unk - 1);
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}
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es = &__mach_error_systems[system];
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if (sub >= es->max_sub)
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return (char *) es->bad_sub;
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if (code >= es->subsystem[sub].max_code)
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{
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static const char unk[] = "Unknown error ";
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char *p = buf + sizeof buf;
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size_t len = strlen (es->subsystem[sub].subsys_name);
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*p-- = '\0';
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p = _itoa (errnum, p, 16, 1);
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*p-- = ' ';
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p = memcpy (p - len, es->subsystem[sub].subsys_name, len);
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return memcpy (p - sizeof unk - 1, unk, sizeof unk - 1);
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}
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return (char *) es->subsystem[sub].codes[code];
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}
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