[p5sagit/p5-mst-13.2.git] / ext / SDBM_File / sdbm / dba.c

/*
 * dba	dbm analysis/recovery
 */

#include <stdio.h>
#include <sys/file.h>
#include "EXTERN.h"
#include "sdbm.h"

char *progname;
extern void oops();

int
main(argc, argv)
char **argv;
{
	int n;
	char *p;
	char *name;
	int pagf;

	progname = argv[0];

	if (p = argv[1]) {
		name = (char *) malloc((n = strlen(p)) + 5);
		if (!name)
		    oops("cannot get memory");

		strcpy(name, p);
		strcpy(name + n, ".pag");

		if ((pagf = open(name, O_RDONLY)) < 0)
			oops("cannot open %s.", name);

		sdump(pagf);
	}
	else
		oops("usage: %s dbname", progname);

	return 0;
}

sdump(pagf)
int pagf;
{
	register b;
	register n = 0;
	register t = 0;
	register o = 0;
	register e;
	char pag[PBLKSIZ];

	while ((b = read(pagf, pag, PBLKSIZ)) > 0) {
		printf("#%d: ", n);
		if (!okpage(pag))
			printf("bad\n");
		else {
			printf("ok. ");
			if (!(e = pagestat(pag)))
			    o++;
			else
			    t += e;
		}
		n++;
	}

	if (b == 0)
		printf("%d pages (%d holes):  %d entries\n", n, o, t);
	else
		oops("read failed: block %d", n);
}

pagestat(pag)
char *pag;
{
	register n;
	register free;
	register short *ino = (short *) pag;

	if (!(n = ino[0]))
		printf("no entries.\n");
	else {
		free = ino[n] - (n + 1) * sizeof(short);
		printf("%3d entries %2d%% used free %d.\n",
		       n / 2, ((PBLKSIZ - free) * 100) / PBLKSIZ, free);
	}
	return n / 2;
}
Commit	Line	Data
463ee0b2	1	/*
	2	* dba dbm analysis/recovery
	3	*/
	4
	5	#include <stdio.h>
	6	#include <sys/file.h>
17f28c40	7	#include "EXTERN.h"
463ee0b2	8	#include "sdbm.h"
	9
	10	char *progname;
	11	extern void oops();
	12
	13	int
	14	main(argc, argv)
	15	char **argv;
	16	{
	17	int n;
	18	char *p;
	19	char *name;
	20	int pagf;
	21
	22	progname = argv[0];
	23
	24	if (p = argv[1]) {
	25	name = (char *) malloc((n = strlen(p)) + 5);
db7c17d7	26	if (!name)
	27	oops("cannot get memory");
	28
463ee0b2	29	strcpy(name, p);
	30	strcpy(name + n, ".pag");
	31
	32	if ((pagf = open(name, O_RDONLY)) < 0)
	33	oops("cannot open %s.", name);
	34
	35	sdump(pagf);
	36	}
	37	else
	38	oops("usage: %s dbname", progname);
	39
	40	return 0;
	41	}
	42
	43	sdump(pagf)
	44	int pagf;
	45	{
	46	register b;
	47	register n = 0;
	48	register t = 0;
	49	register o = 0;
	50	register e;
	51	char pag[PBLKSIZ];
	52
	53	while ((b = read(pagf, pag, PBLKSIZ)) > 0) {
	54	printf("#%d: ", n);
	55	if (!okpage(pag))
	56	printf("bad\n");
	57	else {
	58	printf("ok. ");
	59	if (!(e = pagestat(pag)))
	60	o++;
	61	else
	62	t += e;
	63	}
	64	n++;
	65	}
	66
	67	if (b == 0)
	68	printf("%d pages (%d holes): %d entries\n", n, o, t);
	69	else
	70	oops("read failed: block %d", n);
	71	}
	72
	73	pagestat(pag)
	74	char *pag;
	75	{
	76	register n;
	77	register free;
	78	register short ino = (short ) pag;
	79
	80	if (!(n = ino[0]))
	81	printf("no entries.\n");
	82	else {
	83	free = ino[n] - (n + 1) * sizeof(short);
	84	printf("%3d entries %2d%% used free %d.\n",
	85	n / 2, ((PBLKSIZ - free) * 100) / PBLKSIZ, free);
	86	}
	87	return n / 2;
	88	}