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security: Yama LSM

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This adds the Yama Linux Security Module to collect DAC security
improvements (specifically just ptrace restrictions for now) that have
existed in various forms over the years and have been carried outside the
mainline kernel by other Linux distributions like Openwall and grsecurity.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Kees Cook 2011-12-21 12:17:04 -08:00 • committed by James Morris
parent 1a2a4d06e1
commit 2d514487fa
8 changed files with 411 additions and 0 deletions
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6
include/linux/prctl.h
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@ -114,4 +114,10 @@
# define PR_SET_MM_START_BRK 6
# define PR_SET_MM_BRK 7
/*
* Set specific pid that is allowed to ptrace the current task.
* A value of 0 mean "no process".
*/
#define PR_SET_PTRACER 0x59616d61
#endif /* _LINUX_PRCTL_H */