[issue1723] mmap() MAP_ANON honors offset

[Venkatesh Srinivas (via DragonFly issue tracker)]

New submission from Venkatesh Srinivas <me at acm.jhu.edu>:

#include <stdlib.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>

int main(int argc, char *argv[]) {
        char *c = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_PRIVATE | 
MAP_ANON, -1, 16);
        return printf("%x \n", c);
}

gets an address of xxxxx010. mmap is supposed to fail with EINVAL given an 
offset and MAP_ANON.

Patch here: http://endeavour.zapto.org/dfly/mmap_anon_offset.diff

----------
messages: 8451
nosy: vsrinivas
status: unread
title: mmap() MAP_ANON honors offset

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DragonFly issue tracker <bugs at lists.dragonflybsd.org>
<http://bugs.dragonflybsd.org/issue1723>
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