On Fri, Jan 17, 2020 at 01:30:59AM -0800, cdprashanth wrote:<br>
> man page says:<br>
> "It intercepts and records the system calls which are called by a process and the signals which are received by a process". But when app uses signalfd( ) to get signal delivery via file descriptor, <br>
> the when you run strace -p on the app process, you will not see a signal being received. You will instead see that app wakes from epoll_wait() and performs a read() on the file descriptor.<br>
> This info is missing in man page.<br>
<br>
When signals are blocked using sigprocmask(2), they are not received by tracee.<br>
When they are received by tracee, they are recorded by strace according to the specified signal filter expression.<br>
<br>
If you feel that strace manual page is incomplete in any respect, feel free to propose a patch.<br>


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