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rtc: allow validated RTC_PIE_ON for non-root

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drivers/char/rtc.c allowed RTC_PIE_ON ioctls for non-root users, as long as
the current interval (set via RTC_IRQP_SET) is <= max_user_freq.  Allow
RTC_PIE_ON under the same conditions when /dev/rtc* is handled by the rtc
subsystem.

Signed-off-by: Bryan Kadzban <bryan@kdzbn.homelinux.net>
Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Bryan Kadzban 2007-10-16 01:28:23 -07:00 committed by Linus Torvalds
parent 06c65eb455
commit 9d013d3b14
1 changed files with 2 additions and 1 deletions
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3
drivers/rtc/rtc-dev.c
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@ -233,7 +233,8 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
break;
case RTC_PIE_ON:
if (!capable(CAP_SYS_RESOURCE))
if (rtc->irq_freq > rtc->max_user_freq &&
!capable(CAP_SYS_RESOURCE))
return -EACCES;
break;
}