JehanneOS/mksh
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* fix logic for srand() I got reversed

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* introduce HAVE_ARC4RANDOM tristate (0/1/undef) and fill it appropriately
* NetBSD(R) joins the list of OSes which don't have arc4random
This commit is contained in:
tg 2005-05-26 23:01:30 +00:00
parent 7f4297f3d0
commit dc22f4da3a
3 changed files with 16 additions and 12 deletions
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6
main.c
View File

@ -1,4 +1,4 @@
/** $MirOS: src/bin/mksh/main.c,v 1.7 2005/05/25 23:31:07 tg Exp $ */
/** $MirOS: src/bin/mksh/main.c,v 1.8 2005/05/26 23:01:30 tg Exp $ */
/* $OpenBSD: main.c,v 1.38 2005/03/30 17:16:37 deraadt Exp $ */
/* $OpenBSD: tty.c,v 1.8 2005/03/30 17:16:37 deraadt Exp $ */
/* $OpenBSD: io.c,v 1.21 2005/03/30 17:16:37 deraadt Exp $ */
@ -10,7 +10,7 @@
#include <ctype.h>
#include <pwd.h>
__RCSID("$MirOS: src/bin/mksh/main.c,v 1.7 2005/05/25 23:31:07 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/main.c,v 1.8 2005/05/26 23:01:30 tg Exp $");
extern char **environ;
@ -200,7 +200,7 @@ main(int argc, char *argv[])
setstr(pwd_v, current_wd, KSH_RETURN_ERROR);
}
ppid = getppid();
#if !defined(__gnu_linux__) && !defined(__INTERIX) && !defined(__sun__)
#if !HAVE_ARC4RANDOM
srand((*((long *)kshname)) ^ ((long)time(NULL) * kshpid * ppid));
#endif
setint(global("PPID"), (long) ppid);

10
sh.h
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@ -1,4 +1,4 @@
/** $MirOS: src/bin/mksh/sh.h,v 1.8 2005/05/25 23:31:08 tg Exp $ */
/** $MirOS: src/bin/mksh/sh.h,v 1.9 2005/05/26 23:01:30 tg Exp $ */
/* $OpenBSD: sh.h,v 1.27 2005/03/28 21:33:04 deraadt Exp $ */
/* $OpenBSD: shf.h,v 1.5 2005/03/30 17:16:37 deraadt Exp $ */
/* $OpenBSD: table.h,v 1.6 2004/12/18 20:55:52 millert Exp $ */
@ -1340,4 +1340,12 @@ size_t confstr(int, char *, size_t);
} while (0)
#endif
#ifndef HAVE_ARC4RANDOM
#if defined(__gnu_linux__) || defined(__INTERIX) || defined(__sun__) \
|| defined(__NetBSD__)
#define HAVE_ARC4RANDOM 0
#else
#define HAVE_ARC4RANDOM 1
#endif
#endif

12
var.c
View File

@ -1,4 +1,4 @@
/** $MirOS: src/bin/mksh/var.c,v 1.4 2005/05/25 13:46:02 tg Exp $ */
/** $MirOS: src/bin/mksh/var.c,v 1.5 2005/05/26 23:01:30 tg Exp $ */
/* $OpenBSD: var.c,v 1.26 2005/03/30 17:16:37 deraadt Exp $ */
#include "sh.h"
@ -6,7 +6,7 @@
#include <ctype.h>
#include <time.h>
__RCSID("$MirOS: src/bin/mksh/var.c,v 1.4 2005/05/25 13:46:02 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/var.c,v 1.5 2005/05/26 23:01:30 tg Exp $");
/*
* Variables
@ -855,11 +855,7 @@ makenv(void)
* Someone has set the srand() value, therefore from now on
* we return values from rand() instead of arc4random()
*/
#if !defined(__gnu_linux__) && !defined(__INTERIX) && !defined(__sun__)
int use_rand = 0;
#else
int use_rand = 1;
#endif
int use_rand = !HAVE_ARC4RANDOM;
/*
* Called after a fork in parent to bump the random number generator.
@ -919,7 +915,7 @@ getspec(struct tbl *vp)
vp->flag &= ~SPECIAL;
if (use_rand)
setint(vp, (long) (rand() & 0x7fff));
#if !defined(__gnu_linux__) && !defined(__INTERIX) && !defined(__sun__)
#if HAVE_ARC4RANDOM
else
setint(vp, (long) (arc4random() & 0x7fff));
#endif