| 1 | /* Print a message describing error code.
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| 2 | Copyright (C) 2008-2021 Free Software Foundation, Inc.
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| 3 | Written by Bruno Haible and Simon Josefsson.
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| 4 |
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| 5 | This file is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU Lesser General Public License as
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| 7 | published by the Free Software Foundation; either version 2.1 of the
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| 8 | License, or (at your option) any later version.
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| 9 |
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| 10 | This file is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU Lesser General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU Lesser General Public License
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| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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| 17 |
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| 18 | #include <config.h>
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| 19 |
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| 20 | /* Specification. */
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| 21 | #include <stdio.h>
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| 22 |
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| 23 | #include <errno.h>
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| 24 | #include <stdlib.h>
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| 25 | #include <string.h>
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| 26 |
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| 27 | #include "strerror-override.h"
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| 28 |
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| 29 | /* Use the system functions, not the gnulib overrides in this file. */
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| 30 | #undef fprintf
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| 31 |
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| 32 | void
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| 33 | perror (const char *string)
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| 34 | {
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| 35 | char stackbuf[STACKBUF_LEN];
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| 36 | int ret;
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| 37 |
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| 38 | /* Our implementation guarantees that this will be a non-empty
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| 39 | string, even if it returns EINVAL; and stackbuf should be sized
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| 40 | large enough to avoid ERANGE. */
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| 41 | ret = strerror_r (errno, stackbuf, sizeof stackbuf);
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| 42 | if (ret == ERANGE)
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| 43 | abort ();
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| 44 |
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| 45 | if (string != NULL && *string != '\0')
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| 46 | fprintf (stderr, "%s: %s\n", string, stackbuf);
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| 47 | else
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| 48 | fprintf (stderr, "%s\n", stackbuf);
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| 49 | }
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