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kernel_optimize_test/security/tomoyo
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Randy Dunlap 60605acf5b TOMOYO: fix __setup handlers return values 
[ Upstream commit 39844b7e3084baecef52d1498b5fa81afa2cefa9 ]

__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 14:40:18 +02:00
..
policy
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
audit.c
common.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
common.h exec: Implement kernel_execve 2020-07-21 08:24:52 -05:00
condition.c
domain.c mm/gup: remove task_struct pointer for all gup code 2020-08-12 10:58:04 -07:00
environ.c
file.c tomoyo: ignore data race while checking quota 2021-03-07 12:34:05 +01:00
gc.c
group.c
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
load_policy.c TOMOYO: fix __setup handlers return values 2022-04-08 14:40:18 +02:00
Makefile
memory.c
mount.c
network.c tomoyo: recognize kernel threads correctly 2021-03-09 11:11:15 +01:00
realpath.c proc: proc_pid_ns takes super_block as an argument 2020-05-19 07:07:50 -05:00
securityfs_if.c
tomoyo.c exec: Implement kernel_execve 2020-07-21 08:24:52 -05:00
util.c tomoyo: use hwight16() in tomoyo_domain_quota_is_ok() 2022-01-05 12:40:29 +01:00