Update.

[platform/upstream/glibc.git] / time / tzfile.c

diff --git a/time/tzfile.c b/time/tzfile.c
index 663c02f..9289de6 100644 (file)
--- a/time/tzfile.c
+++ b/time/tzfile.c
@@ -43,6 +43,8 @@ struct leap
     long int change;           /* Seconds of correction to apply.  */
   };
 
+extern char * __tzstring (const char *); /* Defined in tzset.c.  */
+
 static struct ttinfo *find_transition (time_t timer);
 static void compute_tzname_max (size_t);
 
@@ -110,20 +112,21 @@ __tzfile_read (const char *file)
     /* No user specification; use the site-wide default.  */
     file = TZDEFAULT;
   else if (*file == '\0')
-    /* User specified the empty string; use UTC explicitly.  */
-    file = "Universal";
+    /* User specified the empty string; use UTC with no leap seconds.  */
+    return;
   else
     {
       /* We must not allow to read an arbitrary file in a setuid
         program.  So we fail for any file which is not in the
-        directory hierachy starting at TZDIR.  */
+        directory hierachy starting at TZDIR
+        and which is not the system wide default TZDEFAULT.  */
       if (__libc_enable_secure
          && ((*file == '/'
-              && (memcmp(file, TZDEFAULT, sizeof(TZDEFAULT) -1))
+              && memcmp (file, TZDEFAULT, sizeof TZDEFAULT)
               && memcmp (file, default_tzdir, sizeof (default_tzdir) - 1))
              || strstr (file, "../") != NULL))
-       /* This test a certainly a bit too restrictive but it should
-          catch all critical case.  */
+       /* This test is certainly a bit too restrictive but it should
+          catch all critical cases.  */
        return;
     }
 
@@ -243,7 +246,7 @@ __tzfile_read (const char *file)
 
   for (i = 0; i < num_isstd; ++i)
     {
-      char c = getc (f);
+      int c = getc (f);
       if (c == EOF)
        goto lose;
       types[i].isstd = c != 0;
@@ -253,7 +256,7 @@ __tzfile_read (const char *file)
 
   for (i = 0; i < num_isgmt; ++i)
     {
-      char c = getc (f);
+      int c = getc (f);
       if (c == EOF)
        goto lose;
       types[i].isgmt = c != 0;
@@ -266,9 +269,9 @@ __tzfile_read (const char *file)
   info = find_transition (0);
   for (i = 0; i < num_types && i < sizeof (__tzname) / sizeof (__tzname[0]);
        ++i)
-    __tzname[types[i].isdst] = &zone_names[types[i].idx];
+    __tzname[types[i].isdst] = __tzstring (&zone_names[types[i].idx]);
   if (info->isdst < sizeof (__tzname) / sizeof (__tzname[0]))
-    __tzname[info->isdst] = &zone_names[info->idx];
+    __tzname[info->isdst] = __tzstring (&zone_names[info->idx]);
 
   compute_tzname_max (chars);
 
@@ -284,7 +287,8 @@ __tzfile_read (const char *file)
    from the TZDEFRULES file.  */
 
 void
-__tzfile_default (char *std, char *dst, long int stdoff, long int dstoff)
+__tzfile_default (const char *std, const char *dst,
+                 long int stdoff, long int dstoff)
 {
   size_t stdlen, dstlen, i;
   long int rule_offset, rule_stdoff, rule_dstoff;
@@ -371,8 +375,8 @@ __tzfile_default (char *std, char *dst, long int stdoff, long int dstoff)
   types[1].isdst = 1;
 
   /* Reset the zone names to point to the user's names.  */
-  __tzname[0] = &zone_names[0];
-  __tzname[1] = &zone_names[stdlen];
+  __tzname[0] = (char *) std;
+  __tzname[1] = (char *) dst;
 
   compute_tzname_max (stdlen + dstlen);
 }
@@ -407,19 +411,23 @@ find_transition (time_t timer)
 }
 \f
 int
-__tzfile_compute (time_t timer, long int *leap_correct, int *leap_hit)
+__tzfile_compute (time_t timer, int use_localtime,
+                 long int *leap_correct, int *leap_hit)
 {
-  struct ttinfo *info;
   register size_t i;
 
-  info = find_transition (timer);
-  __daylight = info->isdst;
-  __timezone = info->offset;
-  for (i = 0; i < num_types && i < sizeof (__tzname) / sizeof (__tzname[0]);
-       ++i)
-    __tzname[types[i].isdst] = &zone_names[types[i].idx];
-  if (info->isdst < sizeof (__tzname) / sizeof (__tzname[0]))
-    __tzname[info->isdst] = &zone_names[info->idx];
+  if (use_localtime)
+    {
+      struct ttinfo *info = find_transition (timer);
+      __daylight = info->isdst;
+      __timezone = info->offset;
+      for (i = 0;
+          i < num_types && i < sizeof (__tzname) / sizeof (__tzname[0]);
+          ++i)
+       __tzname[types[i].isdst] = &zone_names[types[i].idx];
+      if (info->isdst < sizeof (__tzname) / sizeof (__tzname[0]))
+       __tzname[info->isdst] = &zone_names[info->idx];
+    }
 
   *leap_correct = 0L;
   *leap_hit = 0;
@@ -451,10 +459,10 @@ __tzfile_compute (time_t timer, long int *leap_correct, int *leap_hit)
   return 1;
 }
 \f
-void
+static void
 compute_tzname_max (size_t chars)
 {
-  extern size_t __tzname_cur_max; /* Defined in __tzset.c. */
+  extern size_t __tzname_cur_max; /* Defined in tzset.c. */
 
   const char *p;