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* missing/explicit_bzero.c: new file. define explicit_bzero.

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* common.mk: add a rule for explicit.o.
* configure.in: detect explicit_bzero and memset_s.
* include/ruby/missing.h: add explicit_bzero.
* random.c (init_randomseed): use explicit_bzero() instead of
  memset(). memset could be eliminated by compiler optimization.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52806 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
kosaki 2015-11-30 20:26:13 +00:00
parent 4eeec4869f
commit dea685c783
5 changed files with 17 additions and 1 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
Sun Oct 18 17:26:53 2015 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
* missing/explicit_bzero.c: new file. define explicit_bzero.
* common.mk: add a rule for explicit.o.
* configure.in: detect explicit_bzero and memset_s.
* include/ruby/missing.h: add explicit_bzero.
* random.c (init_randomseed): use explicit_bzero() instead of
memset(). memset could be eliminated by compiler optimization.
Mon Nov 30 18:46:44 2015 NARUSE, Yui <naruse@ruby-lang.org>
* ext/readline/extconf.rb: call dir_config("libedit")

1
common.mk
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@ -705,6 +705,7 @@ alloca.$(OBJEXT): {$(VPATH)}alloca.c {$(VPATH)}config.h
crypt.$(OBJEXT): {$(VPATH)}crypt.c
dup2.$(OBJEXT): {$(VPATH)}dup2.c
erf.$(OBJEXT): {$(VPATH)}erf.c
explicit_bzero.$(OBJEXT): {$(VPATH)}explicit_bzero.c
finite.$(OBJEXT): {$(VPATH)}finite.c
flock.$(OBJEXT): {$(VPATH)}flock.c
memcmp.$(OBJEXT): {$(VPATH)}memcmp.c

2
configure.in
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@ -2127,6 +2127,7 @@ AC_REPLACE_FUNCS(cbrt)
AC_REPLACE_FUNCS(crypt)
AC_REPLACE_FUNCS(dup2)
AC_REPLACE_FUNCS(erf)
AC_REPLACE_FUNCS(explicit_bzero)
AC_REPLACE_FUNCS(ffs)
AC_REPLACE_FUNCS(finite)
AC_REPLACE_FUNCS(flock)
@ -2255,6 +2256,7 @@ AC_CHECK_FUNCS(malloc_usable_size)
AC_CHECK_FUNCS(malloc_size)
AC_CHECK_FUNCS(mblen)
AC_CHECK_FUNCS(memalign)
AC_CHECK_FUNCS(memset_s)
AC_CHECK_FUNCS(writev)
AC_CHECK_FUNCS(memrchr)
AC_CHECK_FUNCS(memmem)

4
include/ruby/missing.h
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@ -242,6 +242,10 @@ RUBY_EXTERN int ruby_close(int);
RUBY_EXTERN void setproctitle(const char *fmt, ...);
#endif
#ifndef HAVE_EXPLICIT_BZERO
RUBY_EXTERN void explicit_bzero(void *b, size_t len);
#endif
RUBY_SYMBOL_EXPORT_END
#if defined(__cplusplus)

2
random.c
View file

@ -1456,7 +1456,7 @@ init_randomseed(struct MT *mt, uint32_t initial[DEFAULT_SEED_CNT])
fill_random_seed(initial);
init_by_array(mt, initial, DEFAULT_SEED_CNT);
seed = make_seed_value(initial);
memset(initial, 0, DEFAULT_SEED_LEN);
explicit_bzero(initial, DEFAULT_SEED_LEN);
return seed;
}