47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* Copyright (c) 2011, 2012 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* error/gnu_error.c
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* Prints an error message to stderr and optionally exits the process.
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*/
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#include <errno.h>
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#include <error.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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void gnu_error(int status, int errnum, const char *format, ...)
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{
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flockfile(stderr);
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fprintf_unlocked(stderr, "%s: ", program_invocation_name);
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va_list list;
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va_start(list, format);
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vfprintf_unlocked(stderr, format, list);
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va_end(list);
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if ( errnum )
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fprintf_unlocked(stderr, ": %s", strerror(errnum));
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fprintf_unlocked(stderr, "\n");
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funlockfile(stderr);
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if ( status )
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exit(status);
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}
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