[Tarantool-patches] [PATCH v2 6/7] popen: handle setsid os specifics

[Cyrill Gorcunov]

Due to os specifics we can't call setsid after
vfork on macos (vfork is not longer a part of
posix btw). Thus lets simply ignore it.

If there gonna be a strong need to drop
controlling terminal (we could use ioctl)
or setup new group we will enhance it.
But only if really needed.

Signed-off-by: Cyrill Gorcunov <gorcunov at gmail.com>
---

I pushed the new series into
gorcunov/gh-4031-popen-fixup-2

 src/lib/core/popen.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/lib/core/popen.c b/src/lib/core/popen.c
index 6e5ca21bd..40da05b52 100644
--- a/src/lib/core/popen.c
+++ b/src/lib/core/popen.c
@@ -833,9 +833,11 @@ popen_new(struct popen_opts *opts)
 		if (opts->flags & POPEN_FLAG_RESTORE_SIGNALS)
 			signal_reset();
 
+#ifndef TARGET_OS_DARWIN
 		/*
-		 * We have to be a session leader otherwise
-		 * won't be able to kill a group of children.
+		 * Note that on MacOS we're not allowed to
+		 * set sid after vfork (it is OS specific)
+		 * thus simply ignore this flag.
 		 */
 		if (opts->flags & POPEN_FLAG_SETSID) {
 			if (setsid() == -1) {
@@ -843,6 +845,7 @@ popen_new(struct popen_opts *opts)
 				goto exit_child;
 			}
 		}
+#endif
 
 		if (opts->flags & POPEN_FLAG_CLOSE_FDS) {
 			if (close_inherited_fds(skip_fds, nr_skip_fds)) {
-- 
2.20.1