diff options
| 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/i386 | |
| parent | ea3834d9fb348fb1144ad3affea22df933eaf62e (diff) | |
[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/i386')
| -rw-r--r-- | arch/i386/kernel/ptrace.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c index b2f17640cef..5606ec7a5c2 100644 --- a/arch/i386/kernel/ptrace.c +++ b/arch/i386/kernel/ptrace.c @@ -682,24 +682,18 @@ void do_syscall_trace(struct pt_regs *regs, int entryexit) /* do the secure computing check first */ secure_computing(regs->orig_eax); - if (unlikely(current->audit_context)) { - if (!entryexit) - audit_syscall_entry(current, regs->orig_eax, - regs->ebx, regs->ecx, - regs->edx, regs->esi); - else - audit_syscall_exit(current, regs->eax); - } + if (unlikely(current->audit_context) && entryexit) + audit_syscall_exit(current, AUDITSC_RESULT(regs->eax), regs->eax); if (!(current->ptrace & PT_PTRACED)) - return; + goto out; /* Fake a debug trap */ if (test_thread_flag(TIF_SINGLESTEP)) send_sigtrap(current, regs, 0); if (!test_thread_flag(TIF_SYSCALL_TRACE)) - return; + goto out; /* the 0x80 provides a way for the tracing parent to distinguish between a syscall stop and SIGTRAP delivery */ @@ -714,4 +708,9 @@ void do_syscall_trace(struct pt_regs *regs, int entryexit) send_sig(current->exit_code, current, 1); current->exit_code = 0; } + out: + if (unlikely(current->audit_context) && !entryexit) + audit_syscall_entry(current, AUDIT_ARCH_I386, regs->orig_eax, + regs->ebx, regs->ecx, regs->edx, regs->esi); + } |