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| author | Will Drewry <wad@chromium.org> | 2012-04-12 23:47:55 +0200 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2012-04-14 03:13:19 +0200 |
| commit | 07bd18d00d5dcf84eb22f8120f47f09c3d8fe27d (patch) | |
| tree | ac0d755afdba978932ad530901acf1619431b266 /include/asm-generic/syscall.h | |
| parent | seccomp: kill the seccomp_t typedef (diff) | |
| download | linux-07bd18d00d5dcf84eb22f8120f47f09c3d8fe27d.tar.xz linux-07bd18d00d5dcf84eb22f8120f47f09c3d8fe27d.zip | |
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
CONFIG_HAVE_ARCH_SECCOMP_FILTER.
Suggested-by: Roland McGrath <mcgrathr@chromium.org>
Signed-off-by: Will Drewry <wad@chromium.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Acked-by: Eric Paris <eparis@redhat.com>
v18: comment and change reword and rebase.
v14: rebase/nochanges
v13: rebase on to 88ebdda6159ffc15699f204c33feb3e431bf9bdc
v12: rebase on to linux-next
v11: fixed improper return type
v10: introduced
Signed-off-by: James Morris <james.l.morris@oracle.com>
Diffstat (limited to 'include/asm-generic/syscall.h')
| -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 5c122ae6bfa6..5b09392db673 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. + * + * Architectures which permit CONFIG_HAVE_ARCH_SECCOMP_FILTER must + * provide an implementation of this. + */ +int syscall_get_arch(struct task_struct *task, struct pt_regs *regs); #endif /* _ASM_SYSCALL_H */ |