view compat/setproctitle.h @ 5507:78f2fda6ee5d draft

compat: Use libbsd's setproctitle(3) Linux PRCTL variant, although more light weight, doesn't work on some kernels. This weighs in around 1k more, but always works. It does play around with environ and args but unlike other similar variants doesn't appear to stamp on what you actually use in the program.
author Roy Marples <roy@marples.name>
date Fri, 09 Oct 2020 20:21:52 +0100
parents bc57b9b804a8
children 1dd90b630d03
line wrap: on
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/*
 * lxc: linux Container library
 *
 * (C) Copyright IBM Corp. 2007, 2008
 *
 * Authors:
 * Daniel Lezcano <daniel.lezcano at free.fr>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef SETPROCTITLE_H
#define SETPROCTITLE_H

#ifndef __printflike
#if __GNUC__ > 2 || defined(__INTEL_COMPILER)
#define	__printflike(a, b) __attribute__((format(printf, a, b)))
#else
#define	__printflike(a, b)
#endif
#endif /* !__printflike */

/* WEXITSTATUS is defined in stdlib.h which defines free() */
#ifdef WEXITSTATUS
static inline const char *
getprogname(void)
{
	return "dhcpcd";
}
static inline void
setprogname(char *name)
{
	free(name);
}
#endif

void setproctitle_init(int, char *[], char *[]);
__printflike(1, 2) void setproctitle(const char *, ...);
void setproctitle_fini(void);

#define libbsd_symver_default(alias, symbol, version) \
    extern __typeof(symbol) alias __attribute__((__alias__(#symbol)))

#define libbsd_symver_variant(alias, symbol, version)
#endif