Hi Evan,
thanks for opening the bug, it is indeed a result of the
0014-Don-t-compare-source-when-checking-if-it-s-already-m.patch.
As far as I understand polydirs are implemented as mount overlays and so /data2
in your example is a mount point already.
You can test this with this example using the same functions as libpam-mount:
// sudo apt install gcc libmount-dev; cc -o lsmount lsmount.c -lmount;
./lsmount
#include <libmount/libmount.h>
int main()
{
struct libmnt_context *ctx;
struct libmnt_table *table;
struct libmnt_iter *iter;
struct libmnt_fs *fs;
ctx = mnt_new_context();
if (ctx == NULL)
return -1;
if (mnt_context_get_mtab(ctx, &table) != 0)
goto out;
iter = mnt_new_iter(MNT_ITER_BACKWARD);
if (iter == NULL)
goto out;
while (mnt_table_next_fs(table, iter, &fs) == 0)
printf("source:\t%s target: %s\n", mnt_fs_get_source(fs),
mnt_fs_get_target(fs));
out:
mnt_free_context(ctx);
return 0;
}
It should list /data2 as a target if run as the user with the polydir.
As far as I understand, mounting something on top of the polydir would hide the
polydir.
Can you give some more background of your setup?
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https://bugs.launchpad.net/bugs/1908638
Title:
mounts to polydirs not working
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