Messages in this thread Patch in this message | | | From | Miroslav Lichvar <> | Subject | [PATCHv2] posix-timers: Fix clock_adjtime to always return timex data on success | Date | Fri, 11 Jan 2013 11:58:58 +0100 |
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The clock_adj call returns the clock state on success, which may be a non-zero value (e.g. TIME_INS), but the modified timex data is copied back to the user only when zero value (TIME_OK) was returned. Fix the condition to copy the data also with positive return values.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> --- kernel/posix-timers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c index 69185ae..10349d5 100644 --- a/kernel/posix-timers.c +++ b/kernel/posix-timers.c @@ -997,7 +997,7 @@ SYSCALL_DEFINE2(clock_adjtime, const clockid_t, which_clock, err = kc->clock_adj(which_clock, &ktx); - if (!err && copy_to_user(utx, &ktx, sizeof(ktx))) + if (err >= 0 && copy_to_user(utx, &ktx, sizeof(ktx))) return -EFAULT; return err; -- 1.7.11.7
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