linux/security/selinux
Kees Cook 2039bda1fa LSM: Add "contents" flag to kernel_read_file hook
As with the kernel_load_data LSM hook, add a "contents" flag to the
kernel_read_file LSM hook that indicates whether the LSM can expect
a matching call to the kernel_post_read_file LSM hook with the full
contents of the file. With the coming addition of partial file read
support for kernel_read_file*() API, the LSM will no longer be able
to always see the entire contents of a file during the read calls.

For cases where the LSM must read examine the complete file contents,
it will need to do so on its own every time the kernel_read_file
hook is called with contents=false (or reject such cases). Adjust all
existing LSMs to retain existing behavior.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Link: https://lore.kernel.org/r/20201002173828.2099543-12-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-05 13:37:03 +02:00
..
include capabilities: Introduce CAP_CHECKPOINT_RESTORE 2020-07-19 20:14:42 +02:00
ss treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
avc.c selinux: ensure we cleanup the internal AVC counters on error in avc_update() 2019-12-21 10:59:21 -05:00
hooks.c LSM: Add "contents" flag to kernel_read_file hook 2020-10-05 13:37:03 +02:00
ibpkey.c selinux: clean up selinux_enabled/disabled/enforcing_boot 2019-12-18 21:22:46 -05:00
Kconfig Documentation,selinux: deprecate setting checkreqprot to 1 2020-02-10 10:49:01 -05:00
Makefile selinux: hash context structure directly 2020-04-17 16:04:34 -04:00
netif.c selinux: Fix spelling mistakes in the comments 2020-07-08 12:15:52 -04:00
netlabel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
netlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
netnode.c selinux: Fix spelling mistakes in the comments 2020-07-08 12:15:52 -04:00
netport.c selinux: Fix spelling mistakes in the comments 2020-07-08 12:15:52 -04:00
nlmsgtab.c net: bridge: vlan: add rtm definitions and dump support 2020-01-15 13:48:17 +01:00
selinuxfs.c selinux: remove unused initial SIDs and improve handling 2020-02-27 19:34:24 -05:00
status.c selinux: move status variables out of selinux_ss 2020-02-10 10:49:01 -05:00
xfrm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00