Messages in this thread Patch in this message |  | | From | Andrey Vagin <> | Subject | [PATCH 3/3] prctl: allow to use PR_MM_SET_* which affect only a current task | Date | Fri, 14 Feb 2014 18:13:29 +0400 |
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Here are PR_SET_MM_*_CODE, PR_SET_MM_ARG_*, PR_SET_MM_ENV_*, PR_SET_MM_AUXV.
Looks like all these parameters can break only the current task and can not affect other tasks or limits.
Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Kees Cook <keescook@chromium.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Aditya Kali <adityakali@google.com> Signed-off-by: Andrey Vagin <avagin@openvz.org> --- kernel/sys.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/kernel/sys.c b/kernel/sys.c index 2f0925d..154cf47 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1719,8 +1719,7 @@ static int prctl_set_mm(int opt, unsigned long addr, if (!issecure(SECURE_SET_EXE_FILE)) return -EPERM; break; - default: - return -EPERM; + /* Other options don't require special capabilities */ } } -- 1.8.5.3
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