diff options
| author | Will Drewry <wad@chromium.org> | 2012-02-17 15:03:37 -0600 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2012-05-20 23:42:19 -0600 |
| commit | 77f466fcbd2cca5734205195fc0ac81da3d427d3 (patch) | |
| tree | 470a6e03dc26e7f121506e20f702fdac03ce3df9 | |
| parent | 3c26a7674ce2e5cbefa28ff830863e284edf5cfb (diff) | |
UBUNTU: SAUCE: SECCOMP: asm/syscall.h: add syscall_get_arch
Adds a stub for a function that will return the AUDIT_ARCH_*
value appropriate to the supplied task based on the system
call convention.
For audit's use, the value can generally be hard-coded at the
audit-site. However, for other functionality not inlined into
syscall entry/exit, this makes that information available.
seccomp_filter is the first planned consumer and, as such,
the comment indicates a tie to HAVE_ARCH_SECCOMP_FILTER. That
is probably an unneeded detail.
v14: rebase/nochanges
v13: rebase on to 88ebdda6159ffc15699f204c33feb3e431bf9bdc
v12: rebase on to linux-next
v11: fixed improper return type
v10: introduced
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Suggested-by: Roland McGrath <mcgrathr@chromium.org>
Signed-off-by: Will Drewry <wad@chromium.org>
Signed-off-by: Kees Cook <kees@ubuntu.com>
| -rw-r--r-- | include/asm-generic/syscall.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/asm-generic/syscall.h b/include/asm-generic/syscall.h index 5c122ae6bfa..a2c13dc40af 100644 --- a/include/asm-generic/syscall.h +++ b/include/asm-generic/syscall.h @@ -142,4 +142,18 @@ void syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, unsigned int i, unsigned int n, const unsigned long *args); +/** + * syscall_get_arch - return the AUDIT_ARCH for the current system call + * @task: task of interest, must be in system call entry tracing + * @regs: task_pt_regs() of @task + * + * Returns the AUDIT_ARCH_* based on the system call convention in use. + * + * It's only valid to call this when @task is stopped on entry to a system + * call, due to %TIF_SYSCALL_TRACE, %TIF_SYSCALL_AUDIT, or %TIF_SECCOMP. + * + * Note, at present this function is only required with + * CONFIG_HAVE_ARCH_SECCOMP_FILTER. + */ +int syscall_get_arch(struct task_struct *task, struct pt_regs *regs); #endif /* _ASM_SYSCALL_H */ |