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Replace last vestige of non-reentrant gmtime with timegm. Problem

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determination and fix again from Nicolas Boullis.
This commit is contained in:
rocky
2008-05-31 12:18:33 +00:00
parent f03aa75458
commit a8e617dc7d
2 changed files with 46 additions and 20 deletions
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6
configure.ac
View File

@@ -20,7 +20,7 @@ define(RELEASE_NUM, 81)
define(CDIO_VERSION_STR, 0.$1cvs)
AC_PREREQ(2.52)
AC_REVISION([$Id: configure.ac,v 1.226 2008/05/05 23:58:28 rocky Exp $])dnl
AC_REVISION([$Id: configure.ac,v 1.227 2008/05/31 12:18:33 rocky Exp $])dnl
AC_INIT(libcdio, CDIO_VERSION_STR(RELEASE_NUM))
AC_CONFIG_SRCDIR(src/cd-info.c)
@@ -562,6 +562,10 @@ AC_CHECK_FUNCS( [bzero drand48 ftruncate geteuid getgid \
getuid getpwuid gettimeofday lstat memcpy memset \
rand seteuid setegid snprintf tzset vsnprintf readlink] )
# check for timegm() support
AC_CHECK_FUNC(timegm, AC_DEFINE(HAVE_TIMEGM,1,
[Define to 1 if timegm is available]))
AC_CHECK_MEMBER([struct tm.tm_gmtoff],
[AC_DEFINE(HAVE_TM_GMTOFF, 1,
[Define if struct tm has the tm_gmtoff member.])],

60
lib/iso9660/iso9660.c
View File

@@ -1,5 +1,5 @@
/*
$Id: iso9660.c,v 1.38 2008/05/31 11:59:06 rocky Exp $
$Id: iso9660.c,v 1.39 2008/05/31 12:18:33 rocky Exp $
Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
Rocky Bernstein <rocky@gnu.org>
@@ -57,7 +57,27 @@ const char ISO_STANDARD_ID[] = {'C', 'D', '0', '0', '1'};
#include <errno.h>
#endif
static const char _rcsid[] = "$Id: iso9660.c,v 1.38 2008/05/31 11:59:06 rocky Exp $";
#ifndef HAVE_TIMEGM
static time_t
timegm(struct tm *tm)
{
time_t ret;
char *tz;
tz = getenv("TZ");
setenv("TZ", "", 1);
tzset();
ret = mktime(tm);
if (tz)
setenv("TZ", tz, 1);
else
unsetenv("TZ");
tzset();
return ret;
}
#endif
static const char _rcsid[] = "$Id: iso9660.c,v 1.39 2008/05/31 12:18:33 rocky Exp $";
/* Variables to hold debugger-helping enumerations */
enum iso_enum1_s iso_enums1;
@@ -149,18 +169,16 @@ iso9660_get_dtime (const iso9660_dtime_t *idr_date, bool b_localtime,
date values to account for the timezone offset. */
{
time_t t = 0;
struct tm *p_temp_tm = b_localtime ? localtime(&t): gmtime(&t);
t = mktime(p_tm);
p_temp_tm = b_localtime ? localtime(&t) : gmtime(&t);
struct tm temp_tm;
if (p_temp_tm->tm_isdst) {
t += 60*60;
p_temp_tm = b_localtime ? localtime(&t) : gmtime(&t);
}
t = timegm(p_tm);
memcpy(p_tm, p_temp_tm, sizeof(struct tm));
if (b_localtime)
localtime_r(&t, &temp_tm);
else
gmtime_r(&t, &temp_tm);
memcpy(p_tm, &temp_tm, sizeof(struct tm));
}
@@ -264,8 +282,6 @@ iso9660_set_dtime (const struct tm *p_tm, /*out*/ iso9660_dtime_t *p_idr_date)
represents a 15-minute interval. */
p_idr_date->dt_gmtoff = p_tm->tm_gmtoff / (15 * 60);
if (p_tm->tm_isdst > 0) p_idr_date->dt_gmtoff -= 4;
if (p_idr_date->dt_gmtoff < -48 ) {
cdio_warn ("Converted ISO 9660 timezone %d is less than -48. Adjusted",
@@ -278,6 +294,8 @@ iso9660_set_dtime (const struct tm *p_tm, /*out*/ iso9660_dtime_t *p_idr_date)
}
#else
p_idr_date->dt_gmtoff = 0;
if (p_tm->tm_isdst > 0) p_idr_date->dt_gmtoff -= 4;
#endif
}
@@ -300,10 +318,11 @@ iso9660_set_ltime (const struct tm *p_tm, /*out*/ iso9660_ltime_t *pvd_date)
p_tm->tm_hour, p_tm->tm_min, p_tm->tm_sec,
0 /* 1/100 secs */ );
#ifndef HAVE_TM_GMTOFF
/* Adjust for daylight savings time. */
if (p_tm->tm_isdst > 0) _pvd_date[16] -= (iso712_t) 4;
#ifdef HAVE_TM_GMTOFF
#else
/* Set time zone in 15-minute interval encoding. */
pvd_date->lt_gmtoff -= p_tm->tm_gmtoff / (15 * 60);
if (pvd_date->lt_gmtoff < -48 ) {
@@ -530,6 +549,7 @@ iso9660_set_pvd(void *pd,
)
{
iso9660_pvd_t ipd;
struct tm temp_tm;
cdio_assert (sizeof(iso9660_pvd_t) == ISO_BLOCKSIZE);
@@ -581,10 +601,12 @@ iso9660_set_pvd(void *pd,
iso9660_strncpy_pad (ipd.abstract_file_id , "", 37, ISO9660_DCHARS);
iso9660_strncpy_pad (ipd.bibliographic_file_id, "", 37, ISO9660_DCHARS);
iso9660_set_ltime (gmtime (pvd_time), &(ipd.creation_date));
iso9660_set_ltime (gmtime (pvd_time), &(ipd.modification_date));
iso9660_set_ltime (NULL, &(ipd.expiration_date));
iso9660_set_ltime (NULL, &(ipd.effective_date));
gmtime_r(pvd_time, &temp_tm);
iso9660_set_ltime (&temp_tm, &(ipd.creation_date));
gmtime_r(pvd_time, &temp_tm);
iso9660_set_ltime (&temp_tm, &(ipd.modification_date));
iso9660_set_ltime (NULL, &(ipd.expiration_date));
iso9660_set_ltime (NULL, &(ipd.effective_date));
ipd.file_structure_version = to_711(1);