From c2390ccf0582c2b902e57d08db6077105e72e0c7 Mon Sep 17 00:00:00 2001 From: Robert Spalek Date: Wed, 23 Jun 2004 14:46:09 +0000 Subject: [PATCH] MJ's suggestion: use MAP_ANONYMOUS in mmap() instead of opening /dev/zero --- lib/lizard-safe.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/lib/lizard-safe.c b/lib/lizard-safe.c index fc4b228f..c26a53bc 100644 --- a/lib/lizard-safe.c +++ b/lib/lizard-safe.c @@ -21,15 +21,11 @@ struct lizard_buffer * lizard_alloc(uns max_len) { - static byte *zero = "/dev/zero"; - int fd = open(zero, O_RDWR); - if (fd < 0) - die("open(%s): %m", zero); struct lizard_buffer *buf = xmalloc(sizeof(struct lizard_buffer)); buf->len = ALIGN(max_len + PAGE_SIZE, PAGE_SIZE); - buf->ptr = mmap(NULL, buf->len, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); + buf->ptr = mmap(NULL, buf->len, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); if (buf->ptr == MAP_FAILED) - die("mmap(%s): %m", zero); + die("mmap(anonymous): %m"); return buf; } -- 2.39.5