[unix-history] / usr / src / cmd / update.c

/*
 * Update the file system every 30 seconds.
 * For cache benefit, open certain system directories.
 */

#include <signal.h>

char *fillst[] = {
	"/bin",
	"/usr",
	"/usr/bin",
	0,
};

main()
{
	char **f;

	if(fork())
		exit(0);
	close(0);
	close(1);
	close(2);
	for(f = fillst; *f; f++)
		open(*f, 0);
	dosync();
	for(;;)
		pause();
}

dosync()
{
	sync();
	signal(SIGALRM, dosync);
	alarm(30);
}
Commit	Line	Data
3b600ead TL	1	/*
	2	* Update the file system every 30 seconds.
	3	* For cache benefit, open certain system directories.
	4	*/
	5
	6	#include <signal.h>
	7
	8	char *fillst[] = {
	9	"/bin",
	10	"/usr",
	11	"/usr/bin",
	12	0,
	13	};
	14
	15	main()
	16	{
	17	char **f;
	18
	19	if(fork())
	20	exit(0);
	21	close(0);
	22	close(1);
	23	close(2);
	24	for(f = fillst; *f; f++)
	25	open(*f, 0);
	26	dosync();
	27	for(;;)
	28	pause();
	29	}
	30
	31	dosync()
	32	{
	33	sync();
	34	signal(SIGALRM, dosync);
	35	alarm(30);
	36	}