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Fix quotacheck to not do a bunch of unneeded fseeks if the

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quota file information is accurate.  This makes it about twice as
fast when the uid name space is very large.
This commit is contained in:
Mike Pritchard 1996-02-27 01:53:17 +00:00
parent 8349ecbf7a
commit 93b5f48962
1 changed files with 9 additions and 2 deletions
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11
sbin/quotacheck/quotacheck.c
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@ -311,6 +311,7 @@ update(fsname, quotafile, type)
register struct fileusage *fup;
register FILE *qfi, *qfo;
register u_long id, lastid;
register off_t offset;
struct dqblk dqbuf;
static int warned = 0;
static struct dqblk zerodqbuf;
@ -343,7 +344,8 @@ update(fsname, quotafile, type)
(void)printf("*** Warning: %s\n",
"Quotas are not compiled into this kernel");
}
for (lastid = highid[type], id = 0; id <= lastid; id++) {
for (lastid = highid[type], id = 0, offset = 0; id <= lastid;
id++, offset += sizeof(struct dqblk)) {
if (fread((char *)&dqbuf, sizeof(struct dqblk), 1, qfi) == 0)
dqbuf = zerodqbuf;
if ((fup = lookup(id, type)) == 0)
@ -352,7 +354,6 @@ update(fsname, quotafile, type)
dqbuf.dqb_curblocks == fup->fu_curblocks) {
fup->fu_curinodes = 0;
fup->fu_curblocks = 0;
fseek(qfo, (long)sizeof(struct dqblk), 1);
continue;
}
if (vflag) {
@ -381,6 +382,12 @@ update(fsname, quotafile, type)
dqbuf.dqb_itime = 0;
dqbuf.dqb_curinodes = fup->fu_curinodes;
dqbuf.dqb_curblocks = fup->fu_curblocks;
if (fseek(qfo, offset, SEEK_SET) < 0) {
(void) fprintf(stderr,
"quotacheck: %s: seek failed: %s\n",
quotafile, strerror(errno));
return(1);
}
fwrite((char *)&dqbuf, sizeof(struct dqblk), 1, qfo);
(void) quotactl(fsname, QCMD(Q_SETUSE, type), id,
(caddr_t)&dqbuf);