support the nonstandard err.h interfaces

note that unlike the originals, these do not print the program
name/argv[0] because we have not saved it anywhere. this could be
changed in __libc_start_main if desired.
This commit is contained in:
Rich Felker 2011-04-05 11:16:49 -04:00
parent 25ce7621e0
commit 39e48531ef
2 changed files with 84 additions and 0 deletions

24
include/err.h Normal file
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@ -0,0 +1,24 @@
#ifndef _ERR_H
#define _ERR_H
#include <stdarg.h>
#ifdef __cplusplus
extern "C" {
#endif
void warn(const char *, ...);
void vwarn(const char *, va_list);
void warnx(const char *, ...);
void vwarnx(const char *, va_list);
void err(int, const char *, ...);
void verr(int, const char *, va_list);
void errx(int, const char *, ...);
void verrx(int, const char *, va_list);
#ifdef __cplusplus
}
#endif
#endif

60
src/linux/err.c Normal file
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#include <err.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
void vwarn(const char *fmt, va_list ap)
{
vfprintf(stderr, fmt, ap);
perror("");
}
void vwarnx(const char *fmt, va_list ap)
{
vfprintf(stderr, fmt, ap);
putc('\n', stderr);
}
void verr(int status, const char *fmt, va_list ap)
{
vwarn(fmt, ap);
exit(status);
}
void verrx(int status, const char *fmt, va_list ap)
{
vwarnx(fmt, ap);
exit(status);
}
void warn(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vwarn(fmt, ap);
va_end(ap);
}
void warnx(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vwarnx(fmt, ap);
va_end(ap);
}
void err(int status, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
verr(status, fmt, ap);
va_end(ap);
}
void errx(int status, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
verrx(status, fmt, ap);
va_end(ap);
}