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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
commit2fd6f58ba6efc82ea2c9c2630f7ff5ed9eeaf34a (patch)
tree87cf236a78ad242ae01f1b71c289131e6d1c0662 /arch/s390
parentea3834d9fb348fb1144ad3affea22df933eaf62e (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/s390')
-rw-r--r--arch/s390/kernel/ptrace.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 647233c02fc8..2d546c67f7c3 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -711,18 +711,13 @@ out:
asmlinkage void
syscall_trace(struct pt_regs *regs, int entryexit)
{
- if (unlikely(current->audit_context)) {
- if (!entryexit)
- audit_syscall_entry(current, regs->gprs[2],
- regs->orig_gpr2, regs->gprs[3],
- regs->gprs[4], regs->gprs[5]);
- else
- audit_syscall_exit(current, regs->gprs[2]);
- }
+ if (unlikely(current->audit_context) && entryexit)
+ audit_syscall_exit(current, AUDITSC_RESULT(regs->gprs[2]), regs->gprs[2]);
+
if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
+ goto out;
if (!(current->ptrace & PT_PTRACED))
- return;
+ goto out;
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
? 0x80 : 0));
@@ -735,4 +730,10 @@ 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,
+ test_thread_flag(TIF_31BIT)?AUDIT_ARCH_S390:AUDIT_ARCH_S390X,
+ regs->gprs[2], regs->orig_gpr2, regs->gprs[3],
+ regs->gprs[4], regs->gprs[5]);
}