[PATCH v2 0/2] increasing delays after invalid login attempts (no PAM)

[Hemmo Nieminen]

Hello,

Decided to give this one another shot.

Simplified the actual tallying functions and got the size down a bit.
Perhaps its still too much but I thought I'd share this anyways since I've
got this written down already.

Unlike in v1, the tally files hold only a single number now and don't need
locking. Each user (i.e. TTY) now uses its own tally file.

Moved login's tally file(s) from /tmp to /run/login/.

Tallying can be enabled/disabled from the config both from the libbb (the
generic tallying functionality) and from login (whether or not to tally
failed login attempts).

Got the following from bloatcheck:

function                                             old     new   delta
bb_tally_add                                           -     275    +275
login_main                                          1302    1483    +181
bb_tally_reset                                         -     104    +104
.rodata                                            98154   98184     +30
pause_after_failed_login                              10      37     +27
pause_reset_after_successful_login                     -      11     +11
vlock_main                                           404     406      +2
sulogin_main                                         329     331      +2
su_main                                              581     583      +2
passwd_main                                         1110    1112      +2
------------------------------------------------------------------------------
(add/remove: 4/0 grow/shrink: 7/0 up/down: 636/0)             Total: 636 bytes


Hemmo Nieminen (2):
  libbb: add support for tallying with files
  login: improve login delays after invalid attempts

 include/libbb.h      |  11 +++-
 libbb/Config.src     |   6 ++
 libbb/Kbuild.src     |   1 +
 libbb/bb_do_delay.c  |  32 ++++++----
 libbb/bb_tally.c     | 137 +++++++++++++++++++++++++++++++++++++++++++
 loginutils/login.c   |  53 ++++++++++++++++-
 loginutils/passwd.c  |   2 +-
 loginutils/su.c      |   2 +-
 loginutils/sulogin.c |   2 +-
 loginutils/vlock.c   |   2 +-
 10 files changed, 231 insertions(+), 17 deletions(-)
 create mode 100644 libbb/bb_tally.c

-- 
2.31.1