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sctp: limit maximum autoclose setsockopt value

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To avoid overflowing the maximum timer interval when transforming
the  autoclose interval from seconds to jiffies, limit the maximum
autoclose value to MAX_SCHEDULE_TIMEOUT/HZ.

Signed-off-by: Andrei Pelinescu-Onciul <andrei@iptel.org>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
This commit is contained in:
Andrei Pelinescu-Onciul 2009-11-23 15:54:01 -05:00 committed by Vlad Yasevich
parent d8dd15781d
commit f6778aab6c
1 changed files with 3 additions and 0 deletions
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3
net/sctp/socket.c
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@ -2086,6 +2086,9 @@ static int sctp_setsockopt_autoclose(struct sock *sk, char __user *optval,
return -EINVAL; return -EINVAL;
if (copy_from_user(&sp->autoclose, optval, optlen)) if (copy_from_user(&sp->autoclose, optval, optlen))
return -EFAULT; return -EFAULT;
/* make sure it won't exceed MAX_SCHEDULE_TIMEOUT */
if (sp->autoclose > (MAX_SCHEDULE_TIMEOUT / HZ) )
sp->autoclose = MAX_SCHEDULE_TIMEOUT / HZ ;
return 0; return 0;
} }