git: 159d922f4ce9 - stable/13 - lockf: don't hold stdin/stdout/stderr open

The branch stable/13 has been updated by kevans:

URL: https://cgit.FreeBSD.org/src/commit/?id=159d922f4ce9405189b4f92bfe46858bfde75400

commit 159d922f4ce9405189b4f92bfe46858bfde75400
Author:     Alexander Melkov <melkov@comptek.ru>
AuthorDate: 2023-11-22 04:46:28 +0000
Commit:     Kyle Evans <kevans@FreeBSD.org>
CommitDate: 2023-12-15 00:59:18 +0000

    lockf: don't hold stdin/stdout/stderr open
    
    None of these are essential in the lockf monitor (parent post-fork), so
    close them to maintain the illusion that lockf hasn't been inserted into
    the pipeline.  This ensures that the correct effects happen on other
    programs in the pipeline if the locked command closes or redirects these
    elsewhere.
    
    The original patch used -s to close stdout/stderr rather than closing
    them unconditionally, but it's not clear that we really care that much.
    kevans dropped that part when taking the patch, patch is otherwise by
    listed author.
    
    PR:             112379
    Reviewed by:    0mp, allanjude (both earlier version), kevans
    Feedback from:  des
    Sponsored by:   Klara, Inc.
    
    (cherry picked from commit 18425c19cae08cbe41801845457ed67285806688)
---
 usr.bin/lockf/lockf.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/usr.bin/lockf/lockf.c b/usr.bin/lockf/lockf.c
index 8b0a13e3ca0f..1149128021e6 100644
--- a/usr.bin/lockf/lockf.c
+++ b/usr.bin/lockf/lockf.c
@@ -157,8 +157,11 @@ main(int argc, char **argv)
 	signal(SIGINT, SIG_IGN);
 	signal(SIGQUIT, SIG_IGN);
 	signal(SIGTERM, killed);
+	fclose(stdin);
+	fclose(stdout);
+	fclose(stderr);
 	if (waitpid(child, &status, 0) == -1)
-		err(EX_OSERR, "waitpid failed");
+		exit(EX_OSERR);
 	return (WIFEXITED(status) ? WEXITSTATUS(status) : EX_SOFTWARE);
 }
 
@@ -210,7 +213,7 @@ killed(int sig)
 	cleanup();
 	signal(sig, SIG_DFL);
 	if (kill(getpid(), sig) == -1)
-		err(EX_OSERR, "kill failed");
+		_Exit(EX_OSERR);
 }
 
 /*