diff options
| author |   otto <otto@openbsd.org> | 2007-02-12 20:00:14 +0000 |
|---|---|---|
| committer | otto <otto@openbsd.org> | 2007-02-12 20:00:14 +0000 |
| commit | 7c5d135c07e34643d755e213917257a1b4711edd (patch) | |
| tree | e7b841078d1fe3576f2420c6003dcfbf384050f8 /lib/libc/stdlib/malloc.c | |
| parent | provide an libc internal interface to get random bytes, to be used by malloc (diff) | |
| download | wireguard-openbsd-7c5d135c07e34643d755e213917257a1b4711edd.tar.xz wireguard-openbsd-7c5d135c07e34643d755e213917257a1b4711edd.zip | |
get cheaper random bytes, less waste and no getpid() calls, which are
done by arc4random(); ok millert@ deraadt@
Diffstat (limited to 'lib/libc/stdlib/malloc.c')
| -rw-r--r-- | lib/libc/stdlib/malloc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c index 39951bc9048..67f5de512ef 100644 --- a/lib/libc/stdlib/malloc.c +++ b/lib/libc/stdlib/malloc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: malloc.c,v 1.85 2006/12/19 13:00:50 otto Exp $ */ +/* $OpenBSD: malloc.c,v 1.86 2007/02/12 20:00:14 otto Exp $ */ /* * ---------------------------------------------------------------------------- @@ -1672,6 +1672,7 @@ not_return: static void free_bytes(void *ptr) { + u_int8_t __arc4_getbyte(void); struct pginfo **mp, **pd, *info; struct pdinfo *pi; #ifdef MALLOC_EXTRA_SANITY @@ -1687,7 +1688,7 @@ free_bytes(void *ptr) /* delay return, returning a random something from before instead */ - tmpidx = arc4random() % 16; + tmpidx = __arc4_getbyte() % 16; tmpptr = chunk_buffer[tmpidx]; chunk_buffer[tmpidx] = ptr; ptr = tmpptr; |