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/*
rc-misc.h
This is private to us and not for user consumption
*/
/*
* Copyright (c) 2007-2009 Roy Marples <roy@marples.name>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef __RC_MISC_H__
#define __RC_MISC_H__
#include <sys/stat.h>
#include <errno.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define RC_LEVEL_BOOT "boot"
#define RC_LEVEL_DEFAULT "default"
#define RC_DEPTREE_CACHE RC_SVCDIR "/deptree"
#define RC_DEPTREE_SKEWED RC_SVCDIR "/clock-skewed"
#define RC_KRUNLEVEL RC_SVCDIR "/krunlevel"
#define RC_STARTING RC_SVCDIR "/rc.starting"
#define RC_STOPPING RC_SVCDIR "/rc.stopping"
#define RC_SVCDIR_STARTING RC_SVCDIR "/starting"
#define RC_SVCDIR_INACTIVE RC_SVCDIR "/inactive"
#define RC_SVCDIR_STARTED RC_SVCDIR "/started"
#define RC_SVCDIR_COLDPLUGGED RC_SVCDIR "/coldplugged"
#define ERRX fprintf (stderr, "out of memory\n"); exit (1)
#define UNCONST(a) ((void *)(unsigned long)(const void *)(a))
#ifdef lint
# define _unused
#endif
#if __GNUC__ > 2 || defined(__INTEL_COMPILER)
# define _dead __attribute__((__noreturn__))
# define _unused __attribute__((__unused__))
#else
# define _dead
# define _unused
#endif
/* Some libc implemntations don't have these */
#ifndef TAILQ_CONCAT
#define TAILQ_CONCAT(head1, head2, field) do { \
if (!TAILQ_EMPTY(head2)) { \
*(head1)->tqh_last = (head2)->tqh_first; \
(head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \
(head1)->tqh_last = (head2)->tqh_last; \
TAILQ_INIT((head2)); \
} \
} while (0)
#endif
#ifndef TAILQ_FOREACH_SAFE
#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
for ((var) = TAILQ_FIRST((head)); \
(var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
(var) = (tvar))
#endif
#ifdef __GLIBC__
# if ! defined (__UCLIBC__) && ! defined (__dietlibc__)
# define strlcpy(dst, src, size) snprintf(dst, size, "%s", src)
# endif
#endif
#ifndef timespecsub
#define timespecsub(tsp, usp, vsp) \
do { \
(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \
(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \
if ((vsp)->tv_nsec < 0) { \
(vsp)->tv_sec--; \
(vsp)->tv_nsec += 1000000000L; \
} \
} while (/* CONSTCOND */ 0)
#endif
_unused static void *xmalloc (size_t size)
{
void *value = malloc(size);
if (value)
return (value);
ERRX;
/* NOTREACHED */
}
_unused static void *xrealloc(void *ptr, size_t size)
{
void *value = realloc(ptr, size);
if (value)
return (value);
ERRX;
/* NOTREACHED */
}
_unused static char *xstrdup(const char *str)
{
char *value;
if (! str)
return (NULL);
value = strdup(str);
if (value)
return (value);
ERRX;
/* NOTREACHED */
}
#undef ERRX
_unused static bool exists(const char *pathname)
{
struct stat buf;
return (stat(pathname, &buf) == 0);
}
_unused static bool existss(const char *pathname)
{
struct stat buf;
return (stat(pathname, &buf) == 0 && buf.st_size != 0);
}
char *rc_conf_value(const char *var);
bool rc_conf_yesno(const char *var);
void env_filter(void);
void env_config(void);
int signal_setup(int sig, void (*handler)(int));
int svc_lock(const char *);
int svc_unlock(const char *, int);
pid_t exec_service(const char *, const char *);
/*
* Check whether path is writable or not,
* this also works properly with read-only filesystems
*/
int is_writable(const char *);
#define service_start(service) exec_service(service, "start");
#define service_stop(service) exec_service(service, "stop");
/* basename_c never modifies the argument. As such, if there is a trailing
* slash then an empty string is returned. */
_unused static const char *basename_c(const char *path)
{
const char *slash = strrchr(path, '/');
if (slash)
return (++slash);
return (path);
}
int parse_mode(mode_t *, char *);
#endif
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