diff options
| author | Eric Paris <eparis@redhat.com> | 2009-07-31 12:54:11 -0400 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-08-17 15:09:11 +1000 |
| commit | 788084aba2ab7348257597496befcbccabdc98a3 (patch) | |
| tree | 2da42d746d67b16ef705229a1b5a3528ec19c725 /mm/nommu.c | |
| parent | 8cf948e744e0218af604c32edecde10006dc8e9e (diff) | |
| download | linux-788084aba2ab7348257597496befcbccabdc98a3.tar.bz2 | |
Security/SELinux: seperate lsm specific mmap_min_addr
Currently SELinux enforcement of controls on the ability to map low memory
is determined by the mmap_min_addr tunable. This patch causes SELinux to
ignore the tunable and instead use a seperate Kconfig option specific to how
much space the LSM should protect.
The tunable will now only control the need for CAP_SYS_RAWIO and SELinux
permissions will always protect the amount of low memory designated by
CONFIG_LSM_MMAP_MIN_ADDR.
This allows users who need to disable the mmap_min_addr controls (usual reason
being they run WINE as a non-root user) to do so and still have SELinux
controls preventing confined domains (like a web server) from being able to
map some area of low memory.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 53cab10fece4..28754c40be98 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -69,9 +69,6 @@ int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT; int sysctl_nr_trim_pages = CONFIG_NOMMU_INITIAL_TRIM_EXCESS; int heap_stack_gap = 0; -/* amount of vm to protect from userspace access */ -unsigned long mmap_min_addr = CONFIG_DEFAULT_MMAP_MIN_ADDR; - atomic_long_t mmap_pages_allocated; EXPORT_SYMBOL(mem_map); |