From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 1 Feb 2021 16:11:26 +0000 (+0100)
Subject: fs-util: when opening arbitrary inodes, better use O_NONBLOCK
X-Git-Tag: v248-rc3~73
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1071c195f7b7fc4d8af31f9acb7fd281bf034af5;p=thirdparty%2Fsystemd.git

fs-util: when opening arbitrary inodes, better use O_NONBLOCK

In case this is a device node where opening might block.
---

diff --git a/src/basic/fs-util.c b/src/basic/fs-util.c
index c8885e5aa1a..8a726e72de0 100644
--- a/src/basic/fs-util.c
+++ b/src/basic/fs-util.c
@@ -1472,8 +1472,7 @@ int fsync_path_at(int at_fd, const char *path) {
                 } else
                         fd = at_fd;
         } else {
-
-                opened_fd = openat(at_fd, path, O_RDONLY|O_CLOEXEC);
+                opened_fd = openat(at_fd, path, O_RDONLY|O_CLOEXEC|O_NONBLOCK);
                 if (opened_fd < 0)
                         return -errno;