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| author | Kees Cook <keescook@chromium.org> | 2014-06-26 01:08:24 +0200 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2014-07-18 21:13:37 +0200 |
| commit | 48dc92b9fc3926844257316e75ba11eb5c742b2c (patch) | |
| tree | 2f35355b95a7c1473fd8d361b4f15a9f368999b4 /include/uapi/asm-generic | |
| parent | seccomp: split mode setting routines (diff) | |
| download | linux-48dc92b9fc3926844257316e75ba11eb5c742b2c.tar.xz linux-48dc92b9fc3926844257316e75ba11eb5c742b2c.zip | |
seccomp: add "seccomp" syscall
This adds the new "seccomp" syscall with both an "operation" and "flags"
parameter for future expansion. The third argument is a pointer value,
used with the SECCOMP_SET_MODE_FILTER operation. Currently, flags must
be 0. This is functionally equivalent to prctl(PR_SET_SECCOMP, ...).
In addition to the TSYNC flag later in this patch series, there is a
non-zero chance that this syscall could be used for configuring a fixed
argument area for seccomp-tracer-aware processes to pass syscall arguments
in the future. Hence, the use of "seccomp" not simply "seccomp_add_filter"
for this syscall. Additionally, this syscall uses operation, flags,
and user pointer for arguments because strictly passing arguments via
a user pointer would mean seccomp itself would be unable to trivially
filter the seccomp syscall itself.
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Andy Lutomirski <luto@amacapital.net>
Diffstat (limited to 'include/uapi/asm-generic')
| -rw-r--r-- | include/uapi/asm-generic/unistd.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index 333640608087..65acbf0e2867 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -699,9 +699,11 @@ __SYSCALL(__NR_sched_setattr, sys_sched_setattr) __SYSCALL(__NR_sched_getattr, sys_sched_getattr) #define __NR_renameat2 276 __SYSCALL(__NR_renameat2, sys_renameat2) +#define __NR_seccomp 277 +__SYSCALL(__NR_seccomp, sys_seccomp) #undef __NR_syscalls -#define __NR_syscalls 277 +#define __NR_syscalls 278 /* * All syscalls below here should go away really, |