ftp.nice.ch/Attic/openStep/implementation/gnustep/sources/alpha-snapshots/pthreads.0.9.2.tgz#/pthreads-0.9.2/stdlib/errormsg.c

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#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include "errormsg.h"

static void
err_doit(int, const char *, va_list);

/* Nonfatal error related to a system call.
 * Print a message and return. */
void
err_ret(const char *fmt, ...)
{
	va_list		ap;

	pthread_lock_global_np();
	va_start(ap, fmt);
	err_doit(1, fmt, ap);
	va_end(ap);
	pthread_unlock_global_np();
	return;
}

/* Fatal error related to a system call.
 * Print a message and terminate. */

void
err_sys(const char *fmt, ...)
{
	va_list		ap;

	pthread_lock_global_np();
	va_start(ap, fmt);
	err_doit(1, fmt, ap);
	va_end(ap);
	exit(1);
	pthread_unlock_global_np(); /* NEVER GETS HERE */
}

/* Fatal error related to a system call.
 * Print a message, dump core, and terminate. */

void
err_dump(const char *fmt, ...)
{
	va_list		ap;

	pthread_lock_global_np();
	va_start(ap, fmt);
	err_doit(1, fmt, ap);
	va_end(ap);
	abort();		/* dump core and terminate */
	exit(1);		/* shouldn't get here */
	pthread_unlock_global_np(); /* Won't get here, either */
}

/* Nonfatal error unrelated to a system call.
 * Print a message and return. */

void
err_msg(const char *fmt, ...)
{
	va_list		ap;

	pthread_lock_global_np();
	va_start(ap, fmt);
	err_doit(0, fmt, ap);
	va_end(ap);
	pthread_unlock_global_np();
	return;
}

/* Fatal error unrelated to a system call.
 * Print a message and terminate. */
void
err_quit(const char *fmt, ...)
{
	va_list		ap;

	pthread_lock_global_np();
	va_start(ap, fmt);
	err_doit(0, fmt, ap);
	va_end(ap);
	exit(1);
	pthread_unlock_global_np(); /* NEVER GETS HERE */
}

/* Print a message and return to caller.
 * Caller specifies "errnoflag". */

static void
err_doit(int errnoflag, const char *fmt, va_list ap)
{
	int		errno_save;
	char	buf[ERRMSG_C_STRLEN + 1];

	errno_save = errno;		/* value caller might want printed */
	vsprintf(buf, fmt, ap);
	if (errnoflag)
		sprintf(buf+strlen(buf), ": %s", strerror(errno_save));
	strcat(buf, "\n");
	fflush(stdout);		/* in case stdout and stderr are the same */
	fputs(buf, stderr);
	fflush(NULL);		/* flushes all stdio output streams */
	return;
}

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.