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/*
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* Public domain
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* err.h compatibility shim
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*/
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#ifdef HAVE_ERR_H
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#include_next <err.h>
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#else
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#ifndef LIBCOMPAT_ERR_H
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#define LIBCOMPAT_ERR_H
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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extern char *__progname;
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static inline void _warn(int err, const char *format, ...)
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__attribute__ ((__format__ (__printf__, 2, 3)));
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static inline void _warn(int err, const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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fprintf(stderr, "%s: ", __progname);
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if (format != NULL) {
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vfprintf(stderr, format, args);
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if (err)
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fprintf(stderr, ": ");
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}
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if (err)
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fprintf(stderr, "%s", strerror(err));
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fprintf(stderr, "\n");
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va_end(args);
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}
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#define err(exitcode, format, args...) \
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do { warn(format, ## args); exit(exitcode); } while (0)
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#define errx(exitcode, format, args...) \
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do { warnx(format, ## args); exit(exitcode); } while (0)
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#define warn(format, args...) \
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_warn(errno, format, ## args)
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#define warnx(format, args...) \
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_warn(0, format, ## args)
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#endif
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#endif
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