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authorBryan Kadzban <bryan@kadzban.is-a-geek.net>2007-10-16 01:28:23 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:13 -0700
commit9d013d3b14f4c81bdfe6c81fc506037d60007036 (patch)
treec85405897df18b5dae8530a45586811913136716 /drivers/rtc/rtc-dev.c
parent06c65eb45578c52d1bc69d044239646d4c90e7ea (diff)
downloadlinux-9d013d3b14f4c81bdfe6c81fc506037d60007036.tar.bz2
rtc: allow validated RTC_PIE_ON for non-root
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>
Diffstat (limited to 'drivers/rtc/rtc-dev.c')
-rw-r--r--drivers/rtc/rtc-dev.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 87d4add6b7f6..814583bd2fe7 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -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;
}