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| author | <dwmw2@shinybook.infradead.org> | 2005-04-29 17:08:28 +0200 |
|---|---|---|
| committer | <dwmw2@shinybook.infradead.org> | 2005-04-29 17:08:28 +0200 |
| commit | 2fd6f58ba6efc82ea2c9c2630f7ff5ed9eeaf34a (patch) | |
| tree | 87cf236a78ad242ae01f1b71c289131e6d1c0662 /arch/s390/kernel/ptrace.c | |
| parent | namei: add audit_inode to all branches in path_lookup (diff) | |
| download | linux-2fd6f58ba6efc82ea2c9c2630f7ff5ed9eeaf34a.tar.xz linux-2fd6f58ba6efc82ea2c9c2630f7ff5ed9eeaf34a.zip | |
[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/kernel/ptrace.c')
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 21 |
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]); } |