tatexit.c

su 的源代码库

/* Copyright (c) Colorado School of Mines, 2006.*/
/* All rights reserved.                       */

#include	"sftest.h"

/* test to see if files created in atexit functions work ok */

void ae()
{
	Sfio_t*	f = sfopen(NIL(Sfio_t*), tstfile(0), "w");

	if(!f)
		terror("Can't create file");

	if(sfwrite(f,"1234\n",5) != 5)
		terror("Can't write to file");
}

MAIN()
{
	Sfio_t* f;

	if(argc <= 1) /* atexit function registered after some sfio access */
	{	if(!(f = sfopen(NIL(Sfio_t*), tstfile(1), "w")) )
			terror("Can't create file");
		if(sfwrite(f,"1234\n",5) != 5)
			terror("Can't write to file");

		atexit(ae);

		system(sfprints("%s 1",argv[0]));
	}
	else /* atexit function registered before some sfio access */
	{	atexit(ae);

		if(!(f = sfopen(NIL(Sfio_t*), tstfile(1), "w")) )
			terror("Can't create file");
		if(sfwrite(f,"1234\n",5) != 5)
			terror("Can't write to file");
	}

	TSTEXIT(0);
}