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121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/* Copyright (C) 1993-2020 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <libintl.h>
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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 <sys/param.h>
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#include <_itoa.h>
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/* It is critical here that we always use the `dcgettext' function for
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the message translation. Since <libintl.h> only defines the macro
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`dgettext' to use `dcgettext' for optimizing programs this is not
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always guaranteed. */
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#ifndef dgettext
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# include <locale.h> /* We need LC_MESSAGES. */
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# define dgettext(domainname, msgid) dcgettext (domainname, msgid, LC_MESSAGES)
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#endif
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/* Return a string describing the errno code in ERRNUM. */
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char *
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__strerror_r (int errnum, char *buf, size_t buflen)
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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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/* Buffer we use to print the number in. For a maximum size for
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`int' of 8 bytes we never need more than 20 digits. */
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char numbuf[21];
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const char *unk = _("Error in unknown error system: ");
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const size_t unklen = strlen (unk);
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char *p, *q;
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numbuf[20] = '\0';
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p = _itoa_word (errnum, &numbuf[20], 16, 1);
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/* Now construct the result while taking care for the destination
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buffer size. */
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q = __mempcpy (buf, unk, MIN (unklen, buflen));
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if (unklen < buflen)
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memcpy (q, p, MIN (&numbuf[21] - p, buflen - unklen));
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/* Terminate the string in any case. */
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if (buflen > 0)
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buf[buflen - 1] = '\0';
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return buf;
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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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/* Buffer we use to print the number in. For a maximum size for
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`int' of 8 bytes we never need more than 20 digits. */
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char numbuf[21];
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const char *unk = _("Unknown error ");
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const size_t unklen = strlen (unk);
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char *p, *q;
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size_t len = strlen (es->subsystem[sub].subsys_name);
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numbuf[20] = '\0';
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p = _itoa_word (errnum, &numbuf[20], 10, 0);
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/* Now construct the result while taking care for the destination
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buffer size. */
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q = __mempcpy (buf, unk, MIN (unklen, buflen));
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if (unklen < buflen)
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{
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q = __mempcpy (q, es->subsystem[sub].subsys_name,
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MIN (len, buflen - unklen));
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if (unklen + len < buflen)
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{
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*q++ = ' ';
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if (unklen + len + 1 < buflen)
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memcpy (q, p,
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MIN (&numbuf[21] - p, buflen - unklen - len - 1));
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}
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}
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/* Terminate the string in any case. */
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if (buflen > 0)
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buf[buflen - 1] = '\0';
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return buf;
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}
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return (char *) _(es->subsystem[sub].codes[code]);
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}
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libc_hidden_def (__strerror_r)
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weak_alias (__strerror_r, strerror_r)
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