git: 13ffee994008 - stable/13 - fsync: Open files in non-blocking mode

The branch stable/13 has been updated by des:

URL: https://cgit.FreeBSD.org/src/commit/?id=13ffee9940082f1a6c134f3b3d40e464bf9fb3b3

commit 13ffee9940082f1a6c134f3b3d40e464bf9fb3b3
Author:     Dag-Erling Smørgrav <des@FreeBSD.org>
AuthorDate: 2025-12-05 14:57:44 +0000
Commit:     Dag-Erling Smørgrav <des@FreeBSD.org>
CommitDate: 2025-12-12 18:53:02 +0000

    fsync: Open files in non-blocking mode
    
    This avoids blocking forever when invoked on a fifo.
    
    MFC after:      1 week
    Reviewed by:    markj
    Differential Revision:  https://reviews.freebsd.org/D54084
    
    (cherry picked from commit 69e041521a80a0b8950f6ec25269a9c3949d6590)
---
 usr.bin/fsync/fsync.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.bin/fsync/fsync.c b/usr.bin/fsync/fsync.c
index 16d5a176da93..7c43ab42f768 100644
--- a/usr.bin/fsync/fsync.c
+++ b/usr.bin/fsync/fsync.c
@@ -52,7 +52,7 @@ main(int argc, char *argv[])
 	
 	rval = EX_OK;
 	for (i = 1; i < argc; ++i) {
-		if ((fd = open(argv[i], O_RDONLY)) == -1) {
+		if ((fd = open(argv[i], O_RDONLY | O_NONBLOCK)) == -1) {
 			warn("open %s", argv[i]);
 			if (rval == EX_OK)
 				rval = EX_NOINPUT;