bf2f40828e
This eliminates the need for the selinux-specific wrapper scrript we
were installing in /lib*/rc/{bin,sbin}.
125 lines
2.6 KiB
C
125 lines
2.6 KiB
C
/*
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* helpers.h
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* This is private to us and not for user consumption
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*/
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/*
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* Copyright (c) 2007-2015 The OpenRC Authors.
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* See the Authors file at the top-level directory of this distribution and
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* https://github.com/OpenRC/openrc/blob/master/AUTHORS
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*
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* This file is part of OpenRC. It is subject to the license terms in
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* the LICENSE file found in the top-level directory of this
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* distribution and at https://github.com/OpenRC/openrc/blob/master/LICENSE
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* This file may not be copied, modified, propagated, or distributed
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* except according to the terms contained in the LICENSE file.
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*/
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#ifndef __HELPERS_H__
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#define __HELPERS_H__
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#define ERRX fprintf (stderr, "out of memory\n"); exit (1)
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#define UNCONST(a) ((void *)(unsigned long)(const void *)(a))
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#ifdef lint
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# define _unused
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#endif
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#if __GNUC__ > 2 || defined(__INTEL_COMPILER)
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# define _dead __attribute__((__noreturn__))
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# define _unused __attribute__((__unused__))
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#else
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# define _dead
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# define _unused
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#endif
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
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#ifdef __GLIBC__
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# if ! defined (__UCLIBC__) && ! defined (__dietlibc__)
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# define strlcpy(dst, src, size) snprintf(dst, size, "%s", src)
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# endif
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#endif
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#ifndef timespecsub
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#define timespecsub(tsp, usp, vsp) \
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do { \
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(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \
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(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \
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if ((vsp)->tv_nsec < 0) { \
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(vsp)->tv_sec--; \
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(vsp)->tv_nsec += 1000000000L; \
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} \
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} while (/* CONSTCOND */ 0)
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#endif
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#include <stdbool.h>
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#include <sys/stat.h>
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_unused static void *xmalloc (size_t size)
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{
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void *value = malloc(size);
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if (value)
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return (value);
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ERRX;
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/* NOTREACHED */
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}
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_unused static void *xrealloc(void *ptr, size_t size)
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{
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void *value = realloc(ptr, size);
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if (value)
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return (value);
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ERRX;
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/* NOTREACHED */
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}
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_unused static char *xstrdup(const char *str)
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{
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char *value;
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if (! str)
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return (NULL);
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value = strdup(str);
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if (value)
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return (value);
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ERRX;
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/* NOTREACHED */
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}
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#undef ERRX
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/* basename_c never modifies the argument. As such, if there is a trailing
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* slash then an empty string is returned. */
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_unused static const char *basename_c(const char *path)
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{
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const char *slash = strrchr(path, '/');
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if (slash)
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return (++slash);
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return (path);
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}
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_unused static bool exists(const char *pathname)
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{
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struct stat buf;
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return (stat(pathname, &buf) == 0);
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}
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_unused static bool existss(const char *pathname)
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{
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struct stat buf;
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return (stat(pathname, &buf) == 0 && buf.st_size != 0);
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}
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#endif
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