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| author | <dwmw2@shinybook.infradead.org> | 2005-04-29 16:08:28 +0100 |
|---|---|---|
| committer | <dwmw2@shinybook.infradead.org> | 2005-04-29 16:08:28 +0100 |
| commit | 2fd6f58ba6efc82ea2c9c2630f7ff5ed9eeaf34a (patch) | |
| tree | 87cf236a78ad242ae01f1b71c289131e6d1c0662 /arch/x86_64/kernel/ptrace.c | |
| parent | ea3834d9fb348fb1144ad3affea22df933eaf62e (diff) | |
| download | linux-2fd6f58ba6efc82ea2c9c2630f7ff5ed9eeaf34a.tar.gz | |
[AUDIT] Don't allow ptrace to fool auditing, log arch of audited syscalls.
We were calling ptrace_notify() after auditing the syscall and arguments,
but the debugger could have _changed_ them before the syscall was actually
invoked. Reorder the calls to fix that.
While we're touching ever call to audit_syscall_entry(), we also make it
take an extra argument: the architecture of the syscall which was made,
because some architectures allow more than one type of syscall.
Also add an explicit success/failure flag to audit_syscall_exit(), for
the benefit of architectures which return that in a condition register
rather than only returning a single register.
Change type of syscall return value to 'long' not 'int'.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'arch/x86_64/kernel/ptrace.c')
| -rw-r--r-- | arch/x86_64/kernel/ptrace.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c index c7011675007d4..ecbccbbf5c2a1 100644 --- a/arch/x86_64/kernel/ptrace.c +++ b/arch/x86_64/kernel/ptrace.c @@ -629,25 +629,28 @@ static void syscall_trace(struct pt_regs *regs) } } +#define audit_arch() (test_thread_flag(TIF_IA32) ? AUDIT_ARCH_I386 : AUDIT_ARCH_X86_64) + asmlinkage void syscall_trace_enter(struct pt_regs *regs) { /* do the secure computing check first */ secure_computing(regs->orig_rax); + if (test_thread_flag(TIF_SYSCALL_TRACE) + && (current->ptrace & PT_PTRACED)) + syscall_trace(regs); + if (unlikely(current->audit_context)) - audit_syscall_entry(current, regs->orig_rax, + audit_syscall_entry(current, audit_arch(), regs->orig_rax, regs->rdi, regs->rsi, regs->rdx, regs->r10); - if (test_thread_flag(TIF_SYSCALL_TRACE) - && (current->ptrace & PT_PTRACED)) - syscall_trace(regs); } asmlinkage void syscall_trace_leave(struct pt_regs *regs) { if (unlikely(current->audit_context)) - audit_syscall_exit(current, regs->rax); + audit_syscall_exit(current, AUDITSC_RESULT(regs->rax), regs->rax); if ((test_thread_flag(TIF_SYSCALL_TRACE) || test_thread_flag(TIF_SINGLESTEP)) |