Re: [RFC 11/32] xfs: convert to struct inode_time

[Roger Willcocks]

On Mon, 2014-06-02 at 19:32 -0400, Theodore Ts'o wrote:

> Linux's time(2) can return (time_t) -1 and set errno to EFAULT, per
> the Posix specification:
> 
> SYSCALL_DEFINE1(time, time_t __user *, tloc)
> {
> 	time_t i = get_seconds();
> 
> 	if (tloc) {
> 		if (put_user(i,tloc))
> 			return -EFAULT;
> 	}
> 	force_successful_syscall_return();
> 	return i;
> }

get_seconds() returns an unsigned long so there's potential for overflow
here.

--
Roger



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