Theodore Ts'o <tytso@xxxxxxx> writes:
> I wonder if the better approach is to just simply have some
> easy-to-use library routines that do a readdir/sort in userspace. The
> spd_readdir does basically this, and as we can see it's good enough
> for most purposes. The problem is danger when using this in threaded
> programs, or if you have programs doing really strange things with
> telldir/seekdir, etc.
>
> But it wouldn't be that hard to write a generic library function which
> if it were used for find, ls, tar, and a few other key programs, would
> solve the problem for most use cases.
Many times I've used scandir(3) to do this.
(copying out of notmuch/notmuch-new.c):
static int
dirent_sort_inode (const struct dirent **a, const struct dirent **b)
{
return ((*a)->d_ino < (*b)->d_ino) ? -1 : 1;
}
(as then doing stat() on each file is *much* faster in inode order)
glibc provides alphasort() (POSIX.1-2008) and versionsort() (GNU
extension), it'd probably be great if it also provided inodesort()
--
Stewart Smith
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