Lines in /etc/group longer than 64 characters breaks the current
implementation of group parser. This is caused by bufio.Scanner
buffer limit.
Fix by re-using the fix for a similar problem in golang os/user,
namely https://go-review.googlesource.com/c/go/+/283601.
Add some tests.
Co-authored-by: Andrey Bokhanko <andreybokhanko@gmail.com>
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 24d5daf54d)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Every []byte to string conversion results in a new allocation.
Avoid some by using []byte more.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 120e3a77d8)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
/etc/groups is not needed when specifying numeric group ids. This
change allows containers without /etc/groups to specify numeric
supplemental groups.
Signed-off-by: Sami Wagiaalla <swagiaal@redhat.com>
Update the tests to use the test-friendly GetAdditionalGroups API,
rather than making random files for no good reason.
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Kir Kolyshkin