Mark internal time functions with attribute_hidden [BZ #18822]

Mark internal time functions with attribute_hidden to allow direct
access within libc.so and libc.a without using GOT nor PLT.

	[BZ #18822]
	* include/time.h (__tzstring): Add attribute_hidden.
	(__tzfile_read): Likewise.
	(__tzfile_compute): Likewise.
	(__tzfile_default): Likewise.
	(__tzset_parse_tz): Likewise.
	(__offtime): Likewise.
	(__asctime_r): Likewise.
	(__tzset): Likewise.
	(__tz_convert): Likewise.
	(__getdate_r): Likewise.
	(__getclktck): Likewise.

diff --git a/ChangeLog b/ChangeLog
index 170d07972e92e067b1ba3133709b64b9b12ba4a9..4a8d173be582cfe3362ebf100894b3fe23e6fa05 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,18 @@
+2017-10-01  H.J. Lu  <hongjiu.lu@intel.com>
+
+       [BZ #18822]
+       * include/time.h (__tzstring): Add attribute_hidden.
+       (__tzfile_read): Likewise.
+       (__tzfile_compute): Likewise.
+       (__tzfile_default): Likewise.
+       (__tzset_parse_tz): Likewise.
+       (__offtime): Likewise.
+       (__asctime_r): Likewise.
+       (__tzset): Likewise.
+       (__tz_convert): Likewise.
+       (__getdate_r): Likewise.
+       (__getclktck): Likewise.
+
 2017-10-01  H.J. Lu  <hongjiu.lu@intel.com>
 
        [BZ #18822]

diff --git a/include/time.h b/include/time.h
index e8c07bbfeafa410835107560ee9435d0b2698812..aab26d7768306e39384804cc1e3c10b527127e3c 100644 (file)
--- a/include/time.h
+++ b/include/time.h
@@ -33,18 +33,19 @@ extern const unsigned short int __mon_yday[2][13] attribute_hidden;
 extern struct tm _tmbuf attribute_hidden;
 
 /* Defined in tzset.c.  */
-extern char *__tzstring (const char *string);
+extern char *__tzstring (const char *string) attribute_hidden;
 
 extern int __use_tzfile attribute_hidden;
 
 extern void __tzfile_read (const char *file, size_t extra,
-                          char **extrap);
+                          char **extrap) attribute_hidden;
 extern void __tzfile_compute (time_t timer, int use_localtime,
                              long int *leap_correct, int *leap_hit,
-                             struct tm *tp);
+                             struct tm *tp) attribute_hidden;
 extern void __tzfile_default (const char *std, const char *dst,
-                             long int stdoff, long int dstoff);
-extern void __tzset_parse_tz (const char *tz);
+                             long int stdoff, long int dstoff)
+  attribute_hidden;
+extern void __tzset_parse_tz (const char *tz) attribute_hidden;
 extern void __tz_compute (time_t timer, struct tm *tm, int use_localtime)
   __THROW attribute_hidden;
 
@@ -68,22 +69,25 @@ libc_hidden_proto (__gmtime_r)
    Return nonzero if successful.  */
 extern int __offtime (const time_t *__timer,
                      long int __offset,
-                     struct tm *__tp);
+                     struct tm *__tp) attribute_hidden;
 
-extern char *__asctime_r (const struct tm *__tp, char *__buf);
-extern void __tzset (void);
+extern char *__asctime_r (const struct tm *__tp, char *__buf)
+  attribute_hidden;
+extern void __tzset (void) attribute_hidden;
 
 /* Prototype for the internal function to get information based on TZ.  */
-extern struct tm *__tz_convert (const time_t *timer, int use_localtime, struct tm *tp);
+extern struct tm *__tz_convert (const time_t *timer, int use_localtime,
+                               struct tm *tp) attribute_hidden;
 
 extern int __nanosleep (const struct timespec *__requested_time,
                        struct timespec *__remaining);
 hidden_proto (__nanosleep)
-extern int __getdate_r (const char *__string, struct tm *__resbufp);
+extern int __getdate_r (const char *__string, struct tm *__resbufp)
+  attribute_hidden;
 
 
 /* Determine CLK_TCK value.  */
-extern int __getclktck (void);
+extern int __getclktck (void) attribute_hidden;
 
 
 /* strptime support.  */