systemd/SOURCES/0929-sd-netlink-handle-EINTR-from-poll-gracefully-as-succ.patch

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2023-11-14 19:04:46 +00:00
From da367d5c87c039f4d1250c12097a5fb16f179a70 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 22 Nov 2022 13:00:48 +0100
Subject: [PATCH] sd-netlink: handle EINTR from poll() gracefully, as success
(cherry picked from commit 69858785335afffc51bc03127beb53332c0fb983)
Related: #2172846
---
src/libsystemd/sd-netlink/sd-netlink.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/libsystemd/sd-netlink/sd-netlink.c b/src/libsystemd/sd-netlink/sd-netlink.c
index a177f220ab..09900d577b 100644
--- a/src/libsystemd/sd-netlink/sd-netlink.c
+++ b/src/libsystemd/sd-netlink/sd-netlink.c
@@ -488,13 +488,18 @@ static int rtnl_poll(sd_netlink *rtnl, bool need_more, uint64_t timeout_usec) {
}
int sd_netlink_wait(sd_netlink *nl, uint64_t timeout_usec) {
+ int r;
+
assert_return(nl, -EINVAL);
assert_return(!rtnl_pid_changed(nl), -ECHILD);
if (nl->rqueue_size > 0)
return 0;
- return rtnl_poll(nl, false, timeout_usec);
+ r = rtnl_poll(nl, false, timeout_usec);
+ if (r < 0 && ERRNO_IS_TRANSIENT(r)) /* Convert EINTR to "something happened" and give user a chance to run some code before calling back into us */
+ return 1;
+ return r;
}
static int timeout_compare(const void *a, const void *b) {