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| author | Christoph Lameter <cl@linux-foundation.org> | 2009-06-03 16:04:31 -0400 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-06-04 12:07:48 +1000 |
| commit | e0a94c2a63f2644826069044649669b5e7ca75d3 (patch) | |
| tree | debf8a9af6ac23dadd116dc1cd1f9dcefe9629c6 /include/linux/security.h | |
| parent | 7d2948b1248109dbc7f4aaf9867c54b1912d494c (diff) | |
| download | linux-e0a94c2a63f2644826069044649669b5e7ca75d3.tar.gz linux-e0a94c2a63f2644826069044649669b5e7ca75d3.tar.bz2 linux-e0a94c2a63f2644826069044649669b5e7ca75d3.zip | |
security: use mmap_min_addr indepedently of security models
This patch removes the dependency of mmap_min_addr on CONFIG_SECURITY.
It also sets a default mmap_min_addr of 4096.
mmapping of addresses below 4096 will only be possible for processes
with CAP_SYS_RAWIO.
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Acked-by: Eric Paris <eparis@redhat.com>
Looks-ok-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'include/linux/security.h')
| -rw-r--r-- | include/linux/security.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/security.h b/include/linux/security.h index d5fd6163606f..5eff459b3833 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -2197,6 +2197,8 @@ static inline int security_file_mmap(struct file *file, unsigned long reqprot, unsigned long addr, unsigned long addr_only) { + if ((addr < mmap_min_addr) && !capable(CAP_SYS_RAWIO)) + return -EACCES; return 0; } |