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authorLinus Torvalds <torvalds@linux-foundation.org>2015-01-26 01:47:34 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2015-01-26 01:47:34 (GMT)
commitb73f0c8f4ba810cd753031d18f4fab83bd9ac58f (patch)
tree672a387d9ae5844a8ffbcab3c7e7c8a3f285ab17 /include
parent71a59b12727316f6d3c1cf4335bc2eaecb86da25 (diff)
parent5fbaba8603d5bbc9e40bcb970bae64cb7e093755 (diff)
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner: "A set of small fixes: - regression fix for exynos_mct clocksource - trivial build fix for kona clocksource - functional one liner fix for the sh_tmu clocksource - two validation fixes to prevent (root only) data corruption in the kernel via settimeofday and adjtimex. Tagged for stable" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: adjtimex: Validate the ADJ_FREQUENCY values time: settimeofday: Validate the values of tv from user clocksource: sh_tmu: Set cpu_possible_mask to fix SMP broadcast clocksource: kona: fix __iomem annotation clocksource: exynos_mct: Fix bitmask regression for exynos4_mct_write
Diffstat (limited to 'include')
-rw-r--r--include/linux/time.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/time.h b/include/linux/time.h
index 203c2ad..beebe3a 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -110,6 +110,19 @@ static inline bool timespec_valid_strict(const struct timespec *ts)
return true;
}
+static inline bool timeval_valid(const struct timeval *tv)
+{
+ /* Dates before 1970 are bogus */
+ if (tv->tv_sec < 0)
+ return false;
+
+ /* Can't have more microseconds then a second */
+ if (tv->tv_usec < 0 || tv->tv_usec >= USEC_PER_SEC)
+ return false;
+
+ return true;
+}
+
extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
#define CURRENT_TIME (current_kernel_time())

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