From e7084fd52ed71249ab2ce7a7d89d601c9d1f904c Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Mon, 5 Mar 2012 13:40:24 -0800 Subject: x32: Switch to a 64-bit clock_t clock_t is used mainly to give the number of jiffies a certain process has burned. It is entirely feasible for a long-running process to consume more than 2^32 jiffies especially in a multiprocess system. As such, switch to a 64-bit clock_t for x32, just as we already switched to a 64-bit time_t. clock_t is only used in a handful of places, and as such it is really not a very significant change. The one that has the biggest impact is in struct siginfo, but since the *size* of struct siginfo doesn't change (it is padded to the hilt) it is fairly easy to make this a localized change. This also gets rid of sys_x32_times, however since this is a pretty late change don't compactify the system call numbers; we can reuse system call slot 521 next time we need an x32 system call. Reported-by: Gregory M. Lueck Signed-off-by: H. Peter Anvin Cc: H. J. Lu Link: http://lkml.kernel.org/r/1329696488-16970-1-git-send-email-hpa@zytor.com --- arch/x86/ia32/ia32_signal.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'arch/x86/ia32') diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c index 25d80f3faf2e..bc09ed2a8b97 100644 --- a/arch/x86/ia32/ia32_signal.c +++ b/arch/x86/ia32/ia32_signal.c @@ -37,6 +37,7 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from) { int err = 0; + bool ia32 = !is_ia32_task(); if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t))) return -EFAULT; @@ -66,8 +67,13 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from) case __SI_FAULT >> 16: break; case __SI_CHLD >> 16: - put_user_ex(from->si_utime, &to->si_utime); - put_user_ex(from->si_stime, &to->si_stime); + if (ia32) { + put_user_ex(from->si_utime, &to->si_utime); + put_user_ex(from->si_stime, &to->si_stime); + } else { + put_user_ex(from->si_utime, &to->_sifields._sigchld_x32._utime); + put_user_ex(from->si_stime, &to->_sifields._sigchld_x32._stime); + } put_user_ex(from->si_status, &to->si_status); /* FALL THROUGH */ default: -- cgit v1.2.3-58-ga151