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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-01-26 01:47:34 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-01-26 01:47:34 (GMT) |
commit | b73f0c8f4ba810cd753031d18f4fab83bd9ac58f (patch) | |
tree | 672a387d9ae5844a8ffbcab3c7e7c8a3f285ab17 /include | |
parent | 71a59b12727316f6d3c1cf4335bc2eaecb86da25 (diff) | |
parent | 5fbaba8603d5bbc9e40bcb970bae64cb7e093755 (diff) | |
download | linux-b73f0c8f4ba810cd753031d18f4fab83bd9ac58f.tar.xz |
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.h | 13 |
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()) |