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 /include/linux/mm.h | |
| parent | SELinux: call cap_file_mmap in selinux_file_mmap (diff) | |
| download | linux-dev-788084aba2ab7348257597496befcbccabdc98a3.tar.xz linux-dev-788084aba2ab7348257597496befcbccabdc98a3.zip | |
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 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index ba3a7cb1eaa0..9a72cc78e6b8 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -34,8 +34,6 @@ extern int sysctl_legacy_va_layout; #define sysctl_legacy_va_layout 0 #endif -extern unsigned long mmap_min_addr; - #include <asm/page.h> #include <asm/pgtable.h> #include <asm/processor.h> @@ -575,19 +573,6 @@ static inline void set_page_links(struct page *page, enum zone_type zone, } /* - * If a hint addr is less than mmap_min_addr change hint to be as - * low as possible but still greater than mmap_min_addr - */ -static inline unsigned long round_hint_to_min(unsigned long hint) -{ - hint &= PAGE_MASK; - if (((void *)hint != NULL) && - (hint < mmap_min_addr)) - return PAGE_ALIGN(mmap_min_addr); - return hint; -} - -/* * Some inline functions in vmstat.h depend on page_zone() */ #include <linux/vmstat.h> |