repquota.c

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C语言 代码 · 共 210 行

#ifndef lint
static char sccsid[] = "@(#)repquota.c	4.1	(ULTRIX)	7/2/90";
#endif lint
/*
 * Based on:
 * static char sccsid[] = "@(#)repquota.c	4.2 (Berkeley, from Melbourne) 5/27/83";
 */

/*
 * Quota report
 */
#include <stdio.h>
#include <sys/param.h>
#include <sys/quota.h>
#include <sys/stat.h>
#include <fstab.h>
#include <pwd.h>

#define LOGINNAMESIZE 8
struct fileusage {
	struct fileusage *fu_next;
	struct dqblk fu_dqblk;
	u_short	fu_uid;
	char fu_name[LOGINNAMESIZE + 1];
};
#define FUHASH 997
struct fileusage *fuhead[FUHASH];
struct fileusage *lookup();
struct fileusage *adduid();
int highuid;

long done;
struct	passwd	*getpwent();

int	vflag;		/* verbose */
int	aflag;		/* all file systems */

char *qfname = "quotas";
char quotafile[MAXPATHLEN + 1];
struct dqblk zerodqblk;

main(argc, argv)
	int argc;
	char **argv;
{
	register struct fstab *fs;
	register struct passwd *pw;
	register struct fileusage *fup;
	char quotafile[MAXPATHLEN];
	int i, errs = 0;

again:
	argc--, argv++;
	if (argc > 0 && strcmp(*argv, "-v") == 0) {
		vflag++;
		goto again;
	}
	if (argc > 0 && strcmp(*argv, "-a") == 0) {
		aflag++;
		goto again;
	}
	if (argc <= 0 && !aflag) {
		fprintf(stderr, "Usage:\n\t%s\n\t%s\n",
			"repquota [-v] -a",
			"repquota [-v] filesys ...");
		exit(1);
	}
	setpwent();
	while ((pw = getpwent()) != 0) {
		fup = lookup(pw->pw_uid);
		if (fup == 0)
			fup = adduid(pw->pw_uid);
		strncpy(fup->fu_name, pw->pw_name, sizeof(fup->fu_name));
	}
	endpwent();
	setfsent();
	while ((fs = getfsent()) != NULL) {
		if (aflag &&
		    (fs->fs_type == 0 || strcmp(fs->fs_type, "rq") != 0))
			continue;
		if (!aflag &&
		    !(oneof(fs->fs_file, argv, argc) ||
		      oneof(fs->fs_spec, argv, argc)))
			continue;
		(void) sprintf(quotafile, "%s/%s", fs->fs_file, qfname);
		errs += repquota(fs->fs_spec, quotafile);
	}
	endfsent();
	for (i = 0; i < argc; i++)
		if ((done & (1 << i)) == 0)
			fprintf(stderr, "%s not found in /etc/fstab\n",
				argv[i]);
	exit(errs);
}

repquota(fsdev, qffile)
	char *fsdev;
	char *qffile;
{
	register struct fileusage *fup;
	FILE *qf;
	u_short uid;
	struct dqblk dqbuf;
	struct stat statb;

	if (vflag)
		fprintf(stdout, "*** Quota report for %s\n", fsdev);
	qf = fopen(qffile, "r");
	if (qf == NULL) {
		perror(qffile);
		return (1);
	}
	if (fstat(fileno(qf), &statb) < 0) {
		perror(qffile);
		return (1);
	}
	quota(Q_SYNC, 0, statb.st_dev, 0);
	for (uid = 0; ; uid++) {
		fread(&dqbuf, sizeof(struct dqblk), 1, qf);
		if (feof(qf))
			break;
		if (dqbuf.dqb_curinodes == 0 && dqbuf.dqb_curblocks == 0)
			continue;
		fup = lookup(uid);
		if (fup == 0)
			fup = adduid(uid);
		fup->fu_dqblk = dqbuf;
	}
	printf("                        Block limits               File limits\n");
	printf("User            used    soft    hard  warn    used  soft  hard  warn\n");
	for (uid = 0; uid <= highuid; uid++) {
		fup = lookup(uid);
		if (fup == 0)
			continue;
		if (fup->fu_dqblk.dqb_curinodes == 0 &&
		    fup->fu_dqblk.dqb_curblocks == 0)
			continue;
		if (fup->fu_name[0] != '\0')
			printf("%-10s", fup->fu_name);
		else
			printf("#%-9d", uid);
		printf("%c%c%8d%8d%8d %5d   %5d %5d %5d %5d\n",
			fup->fu_dqblk.dqb_bsoftlimit && 
			    fup->fu_dqblk.dqb_curblocks >= 
			    fup->fu_dqblk.dqb_bsoftlimit ? '+' : '-',
			fup->fu_dqblk.dqb_isoftlimit &&
			    fup->fu_dqblk.dqb_curinodes >=
			    fup->fu_dqblk.dqb_isoftlimit ? '+' : '-',
			fup->fu_dqblk.dqb_curblocks / btodb(1024),
			fup->fu_dqblk.dqb_bsoftlimit / btodb(1024),
			fup->fu_dqblk.dqb_bhardlimit / btodb(1024),
			fup->fu_dqblk.dqb_bwarn,
			fup->fu_dqblk.dqb_curinodes,
			fup->fu_dqblk.dqb_isoftlimit,
			fup->fu_dqblk.dqb_ihardlimit,
			fup->fu_dqblk.dqb_iwarn);
		fup->fu_dqblk = zerodqblk;
	}
	return (0);
}

oneof(target, list, n)
	char *target, *list[];
	register int n;
{
	register int i;

	for (i = 0; i < n; i++)
		if (strcmp(target, list[i]) == 0) {
			done |= 1 << i;
			return (1);
		}
	return (0);
}

struct fileusage *
lookup(uid)
	u_short uid;
{
	register struct fileusage *fup;

	for (fup = fuhead[uid % FUHASH]; fup != 0; fup = fup->fu_next)
		if (fup->fu_uid == uid)
			return (fup);
	return ((struct fileusage *)0);
}

struct fileusage *
adduid(uid)
	u_short uid;
{
	struct fileusage *fup, **fhp;

	fup = lookup(uid);
	if (fup != 0)
		return (fup);
	fup = (struct fileusage *)calloc(1, sizeof(struct fileusage));
	if (fup == 0) {
		fprintf(stderr, "out of memory for fileusage structures\n");
		exit(1);
	}
	fhp = &fuhead[uid % FUHASH];
	fup->fu_next = *fhp;
	*fhp = fup;
	fup->fu_uid = uid;
	if (uid > highuid)
		highuid = uid;
	return (fup);
}