On Mon, Jul 15, 2019 at 4:48 PM John Baldwin <[email protected]> wrote: > > Author: jhb > Date: Mon Jul 15 21:48:02 2019 > New Revision: 350017 > URL: https://svnweb.freebsd.org/changeset/base/350017 > > Log: > Add ptrace op PT_GET_SC_RET. > > This ptrace operation returns a structure containing the error and > return values from the current system call. It is only valid when a > thread is stopped during a system call exit (PL_FLAG_SCX is set). > > The sr_error member holds the error value from the system call. Note > that this error value is the native FreeBSD error value that has _not_ > been translated to an ABI-specific error value similar to the values > logged to ktrace. > > If sr_error is zero, then the return values of the system call will be > set in sr_retval[0] and sr_retval[1]. > > Reviewed by: kib > MFC after: 1 month > Sponsored by: DARPA > Differential Revision: https://reviews.freebsd.org/D20901 > > Modified: > head/lib/libc/sys/ptrace.2 > head/sys/kern/sys_process.c > head/sys/sys/ptrace.h > head/tests/sys/kern/ptrace_test.c >
Hey John, Any objection to MFC'ing this to stable/12 at least? I've found this to be almost-required in the ptrace user I've been working on lately... I certainly ripped out plenty of hair before realizing that it wasn't detecting error returns properly. Thanks, Kyle Evans _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[email protected]"
