Path: utzoo!attcan!uunet!ogicse!emory!mephisto!udel!mmdf
From: archer%segin4.segin.fr@prime.com (Vincent Archer)
Newsgroups: comp.os.minix
Subject: Bug report
Message-ID: <14694@nigel.udel.EDU>
Date: 22 Mar 90 18:29:17 GMT
Sender: mmdf@udel.EDU
Lines: 41


    I've been out of touch for a while, so I don't know wether or not the
1.5 version does this or not. Try the following program (logged in as root):

# cat test.c
main()
{
if (chroot("/usr/archer/test")) printf("No chroot!\n");
execle("/bin/ls", "ls", "/", (char *)0);
}
# ls
test
test.c
test.o
# test
test
test.c
test.o
#

Uh? What's the matter? Where on earth did execle find a /bin/ls, if / is
the directory show above? (it is, since ls / displays it!).
The test above works (erroneously) on a 1.1 ST version. Fix is in fs/stadir.c

    in do_chroot(), before the put_inode(fp->workdir);, you add

    put_inode(fp->rootdir);
    fp->rootdir = ch_dir ? get_inode(ROOT_DEV, ROOT_INODE) : rfp->rootdir;
    dup_inode(fp->rootdir);


    Another (harmless) bug is the kill function, that does a magnificent
sig=11 when used on a process that you can't send signals to. In kill.c, you
add the declaration:

    extern char *itoa();

and everything works fine! Otherwise, any error code trash the process. It
did work on PCs, because pointer were 16bits integers, but fails on Atari
because ints and pointer are not of the same size! Damn these 8086 and
their small segments! :-)