[src/trunk]: src/share/man/man4 Correct the example in kcov(4)

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/842d04769b1f
branches:  trunk
changeset: 451600:842d04769b1f
user:      kamil <kamil%NetBSD.org@localhost>
date:      Tue May 28 21:31:53 2019 +0000

description:
Correct the example in kcov(4)

mmap(2) has to be called with MAP_SHARED, not MAP_PRIVATE.

Reported by Maciej Grochowski.

diffstat:

 share/man/man4/kcov.4 |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 35cc497ba010 -r 842d04769b1f share/man/man4/kcov.4
--- a/share/man/man4/kcov.4     Tue May 28 20:22:18 2019 +0000
+++ b/share/man/man4/kcov.4     Tue May 28 21:31:53 2019 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: kcov.4,v 1.5 2019/05/26 01:44:34 kamil Exp $
+.\"    $NetBSD: kcov.4,v 1.6 2019/05/28 21:31:53 kamil Exp $
 .\"
 .\" Copyright (c) 2018 Anton Lindqvist <anton%openbsd.org@localhost>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd May 26, 2019
+.Dd May 28, 2019
 .Dt KCOV 4
 .Os
 .Sh NAME
@@ -165,7 +165,7 @@
        if (ioctl(fd, KCOV_IOC_SETBUFSIZE, &size) == -1)
                err(1, "ioctl: KCOV_IOC_SETBUFSIZE");
        cover = mmap(NULL, size * KCOV_ENTRY_SIZE,
-           PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+           PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
        if (cover == MAP_FAILED)
                err(1, "mmap");
        mode = KCOV_MODE_TRACE_PC;