On 02/19/2014 08:29 AM, Xiawei Chen wrote: > http://man7.org/linux/man-pages/man2/prctl.2.html > > release *3.60* of the Linux man-pages project > > I am confused by the description of section RETURN VALUE > > "On success, *PR_GET_DUMPABLE, PR_GET_KEEPCAPS, PR_GET_NO_NEW_PRIVS, > PR_CAPBSET_READ, PR_GET_TIMING, PR_GET_SECUREBITS, PR_MCE_KILL_GET*, > and (if it returns) *PR_GET_SECCOMP *return the nonnegative values > described above. All other option values return 0 on success." > > when i use "prctl(PR_GET_TIMERSLACK, 0, 0, 0, 0)" in my code, then it return 50000. > i guess the value 50000 is the correct result, > whether or not, the description section RETURN VALUE is lack of this option (*PR_GET_TIMERSLACK*)? > > I am looking forward to your response. . Thanks. Yes, you're right of course. I applied the patch below. Cheers, Michael diff --git a/man2/prctl.2 b/man2/prctl.2 index 0ccfe0b..0271a73 100644 --- a/man2/prctl.2 +++ b/man2/prctl.2 @@ -510,7 +510,8 @@ The timer slack values are preserved across .BR execve (2). .TP .BR PR_GET_TIMERSLACK " (since Linux 2.6.28)" -Return the current timer slack value of the calling thread. +Return (as the function result) +the current timer slack value of the calling thread. .TP .BR PR_SET_TIMING " (since Linux 2.6.0-test4)" Set whether to use (normal, traditional) statistical process timing or @@ -782,6 +783,7 @@ On success, .BR PR_GET_NO_NEW_PRIVS , .BR PR_CAPBSET_READ , .BR PR_GET_TIMING , +.BR PR_GET_TIMERSLACK , .BR PR_GET_SECUREBITS , .BR PR_MCE_KILL_GET , and (if it returns) -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
