On Thu, Feb 25, 2010 at 9:23 AM, Petr Salinger <[email protected]> wrote: > The file, which have to be copied, have size 1701, > but two pages (2*4096) are mmaped. It is allowed on both > Linux and FreeBSD. > When the 2nd page of that file would be accessed, it would > generate SIGBUS. > > The question is of course whether it really happens and why ? > Petr > > gcc tst.c -o tst > tst < tst.c > > ------------------------------- > #include <stdio.h> > #include <sys/mman.h> > > int main() > { > > char *p = mmap(0, 8192,PROT_READ,MAP_PRIVATE,0,0);
File descriptor 0 is standard input and you can't mmap that. You should also check the return of mmap. Could you please provide a new test case? Cheers, Carlos. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
