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Randy Dunlap c2554b4764 TOMOYO: fix __setup handlers return values 
[ Upstream commit 39844b7e30 ]

__setup() handlers should return 1 if the parameter is handled.
Returning 0 causes the entire string to be added to init's
environment strings (limited to 32 strings), unnecessarily polluting it.

Using the documented strings "TOMOYO_loader=string1" and
"TOMOYO_trigger=string2" causes an Unknown parameter message:
  Unknown kernel command line parameters
    "BOOT_IMAGE=/boot/bzImage-517rc5 TOMOYO_loader=string1 \
     TOMOYO_trigger=string2", will be passed to user space.

and these strings are added to init's environment string space:
  Run /sbin/init as init process
    with arguments:
     /sbin/init
    with environment:
     HOME=/
     TERM=linux
     BOOT_IMAGE=/boot/bzImage-517rc5
     TOMOYO_loader=string1
     TOMOYO_trigger=string2

With this change, these __setup handlers act as expected,
and init's environment is not polluted with these strings.

Fixes: 0e4ae0e0de ("TOMOYO: Make several options configurable.")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>
Link: https://lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru
Cc: James Morris <jmorris@namei.org>
Cc: Kentaro Takeda <takedakn@nttdata.co.jp>
Cc: tomoyo-dev-en@lists.osdn.me
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-08 14:23:35 +02:00
..
apparmor apparmor: fix error check 2021-11-18 19:16:58 +01:00
bpf bpf: Implement task local storage 2020-11-06 08:08:37 -08:00
integrity EVM: fix the evm= __setup handler return value 2022-04-08 14:23:06 +02:00
keys KEYS: trusted: Avoid calling null function trusted_key_exit 2022-04-08 14:23:09 +02:00
landlock landlock: Use square brackets around "landlock-ruleset" 2022-04-08 14:22:59 +02:00
loadpin
lockdown
safesetid LSM: SafeSetID: Mark safesetid_initialized as __initdata 2021-06-10 09:52:32 -07:00
selinux selinux: Fix selinux_sb_mnt_opts_compat() 2022-04-08 14:23:05 +02:00
smack smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi 2021-11-18 19:16:39 +01:00
tomoyo TOMOYO: fix __setup handlers return values 2022-04-08 14:23:35 +02:00
yama
commoncap.c Miscellaneous minor fixes for v5.13. 2021-04-27 19:32:55 -07:00
device_cgroup.c
inode.c
Kconfig fortify: Explicitly disable Clang support 2021-11-21 13:44:13 +01:00
Kconfig.hardening hardening: Clarify Kconfig text for auto-var-init 2021-07-20 23:02:59 -07:00
lsm_audit.c audit: remove unnecessary 'ret' initialization 2021-06-11 13:21:28 -04:00
Makefile security: remove unneeded subdir-$(CONFIG_...) 2021-09-03 08:17:20 +09:00
min_addr.c
security.c binder: use cred instead of task for selinux checks 2021-11-12 15:05:48 +01:00