rainlance/amiga-tz
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break down tzhead write and read

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SCCS-file: localtime.c
SCCS-SID: 7.43
This commit is contained in:
Arthur David Olson
1995-01-31 08:36:19 -05:00
committed by Paul Eggert
parent 8cb2ab7b72
commit 481a094160
1 changed files with 26 additions and 20 deletions
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46
localtime.c
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@ -292,21 +292,28 @@ register struct state * const sp;
return -1;
}
{
register const struct tzhead * tzhp;
char buf[sizeof *sp + sizeof *tzhp];
int ttisstdcnt;
int ttisgmtcnt;
struct tzhead * tzhp;
char buf[sizeof *sp + sizeof *tzhp];
int ttisstdcnt;
int ttisgmtcnt;
i = read(fid, buf, sizeof buf);
if (close(fid) != 0 || i < sizeof *tzhp)
if (close(fid) != 0)
return -1;
tzhp = (struct tzhead *) buf;
ttisstdcnt = (int) detzcode(tzhp->tzh_ttisstdcnt);
ttisgmtcnt = (int) detzcode(tzhp->tzh_ttisgmtcnt);
sp->leapcnt = (int) detzcode(tzhp->tzh_leapcnt);
sp->timecnt = (int) detzcode(tzhp->tzh_timecnt);
sp->typecnt = (int) detzcode(tzhp->tzh_typecnt);
sp->charcnt = (int) detzcode(tzhp->tzh_charcnt);
p = buf;
p += sizeof tzhp->tzh_reserved;
ttisstdcnt = (int) detzcode(p);
p += 4;
ttisgmtcnt = (int) detzcode(p);
p += 4;
sp->leapcnt = (int) detzcode(p);
p += 4;
sp->timecnt = (int) detzcode(p);
p += 4;
sp->typecnt = (int) detzcode(p);
p += 4;
sp->charcnt = (int) detzcode(p);
p += 4;
if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||
sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||
sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||
@ -314,15 +321,14 @@ register struct state * const sp;
(ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
(ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
return -1;
if (i < sizeof *tzhp +
sp->timecnt * (4 + sizeof (char)) +
sp->typecnt * (4 + 2 * sizeof (char)) +
sp->charcnt * sizeof (char) +
sp->leapcnt * 2 * 4 +
ttisstdcnt * sizeof (char) +
ttisgmtcnt * sizeof (char))
if (i - (p - buf) < sp->timecnt * 4 + /* ats */
sp->timecnt + /* types */
sp->typecnt * (4 + 2) + /* ttinfos */
sp->charcnt + /* chars */
sp->leapcnt * (4 + 4) + /* lsinfos */
ttisstdcnt + /* ttisstds */
ttisgmtcnt) /* ttisgmts */
return -1;
p = buf + sizeof *tzhp;
for (i = 0; i < sp->timecnt; ++i) {
sp->ats[i] = detzcode(p);
p += 4;