On Sun, 12 Dec 1999, Andreas Gruenbacher wrote:
> Dear all,
>
> I would like to bring to your attention the current Linux ACL development
> efforts. AFAIK, there are two competing implementations:
>
> ACLs for ext2
> <http://aerobee.informatik.uni-bremen.de/acl_eng.html>
>
> Posix ACLs for Linux
> <http://acl.bestbits.at/>
>
>
> We have started some discussions about general ACL support for Linux on
> <[EMAIL PROTECTED]> (subscription is via <[EMAIL PROTECTED]>).
> Developers from both projects are now on that list.
>
>
> We have also prepared a patch that prepares the kernel for ACL support
> (attached). This patch is against 2.2.13, but umask handling hasn't changed
> until 2.3.31 at least. Please comment.
First of all, why do you need the full permissions? Anyway, _if_ you
really need it - that's not a way to go. Really. Minimal solution would go
along the lines
static inline void init_cred(struct inode *inode, struct task *task,
struct inode *parent, int policy, mode_t mode)
{
inode->i_mode = mode & ~task->fs->umask;
inode->i_uid = task->fsuid;
switch(policy) {
case GID_BSD:
inode->i_gid = parent->i_gid;
break;
case GID_MISSEDEMV:
if (parent->i_mode & S_ISGID)
inode->i_gid = parent->i_gid;
else
inode->i_gid = task->fsgid;
}
if (S_ISDIR(mode) && parent->i_mode & S_ISGID)
inode->i_mode |= S_ISGID;
}
and foo_new_inode() should call it.
